JP2005216396A - Information recording processing apparatus, information reproducing processing apparatus, information recording medium and method, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus recording additional data being hard to analyze in an information recording medium, and reproducing it, a medium, a method, and a computer program. <P>SOLUTION: When specific UCD(user control data) is UCD including additional data, a stored bit of the specific UCD is made coincident to a DC control bit of a DC control bit storing frame corresponding to the specific UCD, when the specific UCD does not include the additional data, a stored bit of the specific UCD is not made coincident to the DC control bit of the DC control bit storing frame corresponding to the specific UCD. Also, in the DC control bit, arithmetic processing of the stored data of the specific UCD and the additional data, for example, exclusive OR or exclusive NOR is performed, and the result of arithmetic operation is set to the DC control bit storing frame corresponding to the specific UCD. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an information recording processing device, an information reproduction processing device, an information recording medium, a method, and a computer program. More specifically, for example, additional data, for example, key information, content reproduction control information, copy control information, etc., applied to the content decryption process is recorded on an information recording medium for recording content such as image data and music data. In the configuration that enables reading, by setting additional data based on the correspondence between the bit value of specific user control data (UCD) included in the recording data and the DC control bits set in the recording data, The present invention relates to an information recording processing apparatus, an information reproduction processing apparatus, an information recording medium and method, and a computer program that realize an additional data embedding configuration with high analysis difficulty.

  When data such as music data and image data is recorded as digital data on a recording medium, a recording process according to a predetermined recording format is performed. For example, an error detection / correction code is added to the original data to be recorded, and it is recorded after being converted (coded) into a format corresponding to a specific data recording / reproducing process.

  In recent years, a system for recording and reproducing information using a blue laser as an information recording medium capable of recording high-density information has been developed. In the information recording process using the blue laser, a modulation process for basically modulating 2-bit data into 3-bit data is performed.

  By the way, as contents to be stored in such an information recording medium, there are, for example, movies and music data. Many contents, such as music data and image data, generally have distribution rights or the like held by the creator or seller. Therefore, when distributing these contents, it is common to adopt a configuration that restricts the use of the contents, that is, permits the use of the contents only to authorized users and prevents unauthorized copying or the like. It is the target.

  A large-capacity recording medium such as a recording medium using a blue laser recording system capable of high-capacity recording can record data for one to several movies, for example, on one medium. As content can easily be recorded as digital information, the problem of flooding of illegal copies often occurs, and the problem of obstructing the interests of copyright holders and distributors of content becomes large. ing. Under such circumstances, how to prevent illegal copying and protect the interests of copyright holders and distribution rights holders is an important issue.

  In order to prevent such unauthorized use of content, the content stored in the information recording medium is recorded as encrypted content, and encryption key information to be applied as the encryption key of the encrypted content or a part of the data is configured Information, or encryption key generation information such as data necessary for generating an encryption key (for example, seed) or various control information such as content reproduction control and copy control is stored as secret information in an information recording medium. A configuration is proposed. A configuration in which a playback processing program executed in a playback device of a user reads secret information such as a key corresponding to the content to be played, decrypts the content according to the read secret information, and executes use of the content according to the playback control information It is.

  For example, Patent Document 1 discloses a configuration in which special data is embedded by applying a connection bit (margin bit) of EFM modulation data as a prior art that discloses a secret information embedding processing configuration. Patent Document 2 discloses a configuration in which a plurality of conversion tables are applied to the modulation process, and data related to the conversion table applied to the modulation is extracted during reproduction, and additional data is acquired based on the extracted data. Disclosure.

However, if information such as where the encryption key or control information is stored in the information recording medium is acquired by the user or an unauthorized content user, additional data can be leaked or altered. There is a problem of end. For example, problems such as falsification of reproduction control information and copy control information, or leakage of key information occur. If the encryption key is leaked or the control information is tampered with, the usage form of the content based on the legitimate content usage right will be lost, and the copyright and usage right of the content will not be adequately protected. is there.
JP 2003-45128 A JP 2002-367282 A

  The present invention has been made in view of the above-described problems. For example, additional information such as key information and content applied to content decryption processing are recorded on an information recording medium that records content such as image data and music data. In a configuration in which reproduction control information, copy control information, a password, and the like can be recorded and read, a bit value of specific user control data (UCD) included in the recording data and a DC control bit set in the recording data Information recording processing apparatus, information reproduction processing apparatus, information recording medium, method, and computer that realize an additional data embedding configuration with high analysis difficulty by performing setting that enables acquisition of additional data based on the correspondence relationship of・ The purpose is to provide a program.

The first aspect of the present invention is:
In the information recording processing apparatus,
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD A DC control bit selection unit for executing processing;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation unit that selectively executes DC control bit setting processing based on input information from the control bit selection unit;
It is in the information recording processing apparatus characterized by having.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the specific UCD is 8-bit data, and the DC control bit selection unit is adapted to support the specific UCD when the specific UCD is an additional data storage UCD. When the eight DC control bits set in the DC control bit storage frame match the 8-bit value of the additional data storage UCD, and the specific UCD is a non-additional data storage UCD, the specific UCD corresponding DC control bit storage frame The DC control bit selection process is performed to set the eight DC control bits to be set to a value different from the 8-bit value of the additional data storage UCD.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the information recording processing apparatus has a specific UCD position information counter that executes the selection of the specific UCD, and the DC control bit selection unit includes the specific UCD The configuration is characterized in that a DC control bit selection process set in a specific UCD-compatible DC control bit storage frame corresponding only to a specific UCD selected by the position information counter is executed.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the information recording processing apparatus has a specific UCD position information counter for performing the selection of the specific UCD, and the specific UCD position information counter is an information recording medium. This is characterized in that a process for selecting a specific UCD is executed based on address information corresponding to recording data.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the specific UCD position information counter is configured to determine the row position information of the UCD based on the configuration bits of the cluster identification information in the address information corresponding to the recording data for the information recording medium. The present invention is characterized in that a process for specifying column position information is executed.

  Furthermore, in one embodiment of the information recording processing device of the present invention, the modulation data generation unit may include at least a part of the DC control bits set in the specific UCD-compatible DC control bit storage frame selected from the recording target data. The setting is based on DC control bit information input from the DC control bit selection unit, and the other DC control bits are configured to execute processing for setting based on DSV measurement.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the information recording processing apparatus includes: encryption key information, encryption key generation information, content reproduction control information of content stored in the information recording medium, the additional data, The configuration is set as configuration information of at least one of content copy control information and password.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the modulation data generation unit generates a modulation recording frame by executing data conversion processing satisfying RLL (1, 7) as a run length rule. It is characterized by being.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the modulation data generation unit is configured to execute modulation recording frame generation processing including conversion processing of 2-bit information into 3-bit information. To do.

Furthermore, the second aspect of the present invention provides
In the information recording processing apparatus,
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. A DC control bit calculation unit for making a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation unit that selectively executes DC control bit setting processing based on input information from the control bit calculation unit;
It is in the information recording processing apparatus characterized by having.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the DC control bit calculation unit is configured to perform exclusive OR (XOR) or exclusive negative OR (XNOR) of the stored data of the specific UCD and the additional data. Any one of the calculation processes is executed, and the calculation result is used as a DC control bit set in a specific UCD-compatible DC control bit storage frame.

  Furthermore, in one embodiment of the information recording processing apparatus of the present invention, the specific UCD is 8-bit data, and the DC control bit calculation unit includes 8 bits of stored data of the specific UCD and 8 bits of additional data configuration bits. Eight DCs that perform either exclusive OR (XOR) or exclusive negative OR (XNOR) operation processing and set 8 bits acquired as the operation result in the specific UCD-compatible DC control bit storage frame The control bit is a feature.

Furthermore, the third aspect of the present invention provides
An information reproduction processing device that executes reproduction processing of information stored in an information recording medium,
A data demodulator that performs demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding unit that executes acquisition processing of additional data based on the result;
The information reproduction processing apparatus is characterized by comprising:

  Furthermore, in one embodiment of the information reproduction processing apparatus of the present invention, the additional data decoding unit adds the specific UCD when the DC control bit acquired from the specific UCD-compatible DC control bit storage frame matches the specific UCD. The present invention is characterized in that a process for determining that the UCD includes data is executed.

  Furthermore, in one embodiment of the information reproduction processing apparatus of the present invention, the specific UCD is 8-bit data, and the additional data decoding unit stores the 8-bit data stored in the specific UCD and the DC control bit storage corresponding to the specific UCD. It is configured to determine whether or not eight DC control bit data selected from a frame match, and to perform processing for determining whether or not a specific UCD includes additional data based on the determination result. Features.

  Furthermore, in one embodiment of the information reproduction processing device of the present invention, the information reproduction processing device has a specific UCD position information counter for performing selection of the specific UCD, and the additional data decoding unit includes the specific UCD position. Only the specific UCD selected by the information counter is configured to execute the correspondence determination process with the DC control bit of the specific UCD-compatible DC control bit storage frame.

  Furthermore, in one embodiment of the information reproduction processing apparatus of the present invention, the information reproduction processing apparatus has a specific UCD position information counter for executing the selection of the specific UCD, and the specific UCD position information counter is an information recording medium. This is characterized in that a process for selecting a specific UCD is executed based on address information corresponding to recording data.

  Furthermore, in one embodiment of the information reproduction processing apparatus of the present invention, the specific UCD position information counter is based on the configuration position bits of the cluster identification information in the address information corresponding to the recording data for the information recording medium and the UCD row position information and The present invention is characterized in that a process for specifying column position information is executed.

Furthermore, the fourth aspect of the present invention provides
An information reproduction processing device that executes reproduction processing of information stored in an information recording medium,
A data demodulator that performs demodulation processing of data read from the information recording medium;
An additional data decoding unit that executes a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and executes a process of acquiring additional data based on the calculation result;
The information reproduction processing apparatus is characterized by comprising:

  Furthermore, in an embodiment of the information reproduction processing device of the present invention, the additional data decoding unit performs an exclusive OR as a calculation process between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD. (XOR) or exclusive negative logical sum (XNOR) is executed, and the process of acquiring the operation result as an additional data component bit is executed.

  Furthermore, in one embodiment of the information reproduction processing apparatus of the present invention, the additional data decoding unit is configured to exclude the storage data of the specific UCD from 8 bits and the DC control bit of 8 bits acquired from the DC control bit storage frame corresponding to the specific UCD. That either one of the logical OR (XOR) or the exclusive negative OR (XNOR) is executed, and the 8 bits acquired as the operation result are acquired as additional data constituent bits. Features.

Furthermore, the fifth aspect of the present invention provides
An information recording medium,
Information on whether or not additional data has been stored in a specific UCD selected from UCD (user control data) included in the recorded data,
An information recording medium having a data recording configuration that enables analysis based on a value of a DC control bit set in a specific UCD-compatible DC control bit storage frame.

Furthermore, in an embodiment of the information recording medium of the present invention, when the specific UCD is an additional data storage UCD, the information recording medium transmits a DC control bit of the specific UCD-compatible DC control bit storage frame to the specific UCD. Set as the value corresponding to the stored bit information,
When the specific UCD is an additional data non-storage UCD, the DC control bit of the specific UCD-compatible DC control bit storage frame is set as a value not corresponding to the storage bit information of the specific UCD, and is a multinomial system. .

  Furthermore, in one embodiment of the information recording medium of the present invention, the information recording medium uses the additional data as encryption key information, encryption key generation information, content reproduction control information, content copy control of content stored in the information recording medium. It is a configuration stored as configuration information of at least one of information and password.

Furthermore, the sixth aspect of the present invention provides
An information recording medium,
Bit information calculated as a calculation result of the storage bit information of the specific UCD selected from the UCD (user control data) included in the recording data and the constituent bit information of the additional data is set in the DC control bit storage frame corresponding to the specific UCD. The information recording medium has a configuration recorded as DC control bits.

  Furthermore, in one embodiment of the information recording medium of the present invention, the information recording medium is either an exclusive logical sum (XOR) or an exclusive negative logical sum (XNOR) of the data stored in the specific UCD and the additional data. The calculation result is a configuration in which the DC control bit of the DC control bit storage frame corresponding to the specific UCD is used.

Furthermore, the seventh aspect of the present invention provides
In the information recording processing method,
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD DC control bit selection step for performing processing;
This is a modulation data generation step for executing a data modulation process for recording target data and a DC control bit setting process to generate a modulated recording frame as recording unit data, a DC control bit setting process based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information selected in the control bit selection step;
An information recording processing method characterized by comprising:

  Furthermore, in one embodiment of the information recording processing method of the present invention, the specific UCD is 8-bit data, and the DC control bit selection step is performed when the specific UCD is an additional data storage UCD. When the eight DC control bits set in the DC control bit storage frame match the 8-bit value of the additional data storage UCD, and the specific UCD is a non-additional data storage UCD, the specific UCD corresponding DC control bit storage frame This is a step of executing a DC control bit selection process for setting the eight DC control bits to be set to values different from the 8-bit value of the additional data storage UCD.

  Furthermore, in an embodiment of the information recording processing method of the present invention, the information recording processing method further includes a specific UCD position information counter step for performing selection of the specific UCD, and the DC control bit selection step includes: A DC control bit selection process set in a specific UCD-compatible DC control bit storage frame corresponding only to the specific UCD selected in the specific UCD position information counter step is performed.

  Furthermore, in one embodiment of the information recording processing method of the present invention, the information recording processing method further includes a specific UCD position information counter step for performing the selection of the specific UCD, and the specific UCD position information counter step includes: And a step of executing a process of selecting a specific UCD based on address information corresponding to recording data for the information recording medium.

  Furthermore, in one embodiment of the information recording processing method of the present invention, the specific UCD position information counter step comprises the UCD row position information based on the constituent bits of the cluster identification information in the address information corresponding to the recording data for the information recording medium. And a step of executing processing for specifying column position information.

  Furthermore, in an embodiment of the information recording processing method of the present invention, the modulation data generation step includes at least part of the DC control bits set in the specific UCD-compatible DC control bit storage frame selected from the recording target data. The DC control bit is selected based on the DC control bit information selected in the DC control bit selection step, and the other DC control bits are set based on the DSV measurement.

  Furthermore, in an embodiment of the information recording processing method of the present invention, the information recording processing method includes: encryption key information, encryption key generation information, content reproduction control information of content stored in the information recording medium; It is set as configuration information of at least one of content copy control information and password.

  Furthermore, in one embodiment of the information recording processing method of the present invention, the modulation data generation step generates a modulation recording frame by executing data conversion processing satisfying RLL (1, 7) as a run length rule. It is characterized by.

  Furthermore, in one embodiment of the information recording processing method of the present invention, the modulation data generation step is characterized in that a modulation recording frame generation process including a conversion process of 2-bit information into 3-bit information is executed.

Furthermore, the eighth aspect of the present invention provides
In the information recording processing method,
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. DC control bit calculation step to be a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information calculated in the control bit calculation step;
An information recording processing method characterized by comprising:

  Furthermore, in one embodiment of the information recording processing method of the present invention, the DC control bit calculation step includes an exclusive OR (XOR) or an exclusive negative OR (XNOR) of the data stored in the specific UCD and the additional data. This calculation step is characterized in that the calculation result is used as a DC control bit set in a specific UCD-compatible DC control bit storage frame.

  Furthermore, in one embodiment of the information recording processing method of the present invention, the specific UCD is 8-bit data, and the DC control bit calculation step includes the storage data of 8 bits of the specific UCD and the additional data component bits of 8 bits. Eight DCs that perform either exclusive OR (XOR) or exclusive negative OR (XNOR) operation processing and set 8 bits acquired as the operation result in the specific UCD-compatible DC control bit storage frame It is a step for setting a control bit.

Furthermore, the ninth aspect of the present invention provides
An information reproduction processing method for executing reproduction processing of information stored in an information recording medium,
A data demodulation step for performing demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding step for performing additional data acquisition processing based on the result;
An information reproduction processing method characterized by comprising:

  Furthermore, in one embodiment of the information reproduction processing method of the present invention, the additional data decoding step includes adding the specific UCD when the DC control bit acquired from the specific UCD-compatible DC control bit storage frame matches the specific UCD. The method includes a step of executing a process of determining that the UCD includes data.

  Furthermore, in one embodiment of the information reproduction processing method of the present invention, the specific UCD is 8-bit data, and the additional data decoding step includes storing the specific UCD storing 8-bit data and storing the specific UCD-compatible DC control bit. Determining whether the eight DC control bit data selected from the frame match, and executing a process of determining whether the specific UCD includes additional data based on the determination result. Features.

  Furthermore, in an embodiment of the information reproduction processing method of the present invention, the information reproduction processing method includes a specific UCD position information counter step for performing selection of the specific UCD, and the additional data decoding step includes the specific UCD step. Correspondence determination processing with respect to DC control bits of a specific UCD-compatible DC control bit storage frame is executed corresponding to only the specific UCD selected in the position information counter step.

  Furthermore, in an embodiment of the information reproduction processing method of the present invention, the information reproduction processing method includes a specific UCD position information counter step for executing the selection of the specific UCD, and the specific UCD position information counter step includes information It is a step of executing a process of selecting a specific UCD based on address information corresponding to recording data for the recording medium.

  Furthermore, in one embodiment of the information reproduction processing method of the present invention, the specific UCD position information counter step comprises the UCD row position information based on the constituent bits of the cluster identification information in the address information corresponding to the recording data for the information recording medium. And a step of executing processing for specifying column position information.

Furthermore, the tenth aspect of the present invention provides
An information reproduction processing method for executing reproduction processing of information stored in an information recording medium,
A data demodulation step for performing demodulation processing of data read from the information recording medium;
An additional data decoding step of performing a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and performing a process of acquiring additional data based on the calculation result;
An information reproduction processing method characterized by comprising:

  Furthermore, in an embodiment of the information reproduction processing method of the present invention, the additional data decoding step includes an exclusive OR as a calculation process of the DC control bit acquired from the DC control bit storage frame corresponding to the specific UCD and the specific UCD. (XOR) or exclusive OR (XNOR) is executed, and the operation result is acquired as an additional data component bit.

  Furthermore, in an embodiment of the information reproduction processing method of the present invention, the additional data decoding step includes exclusive use of 8 bits of storage data of the specific UCD and 8 bits of DC control bits acquired from the DC control bit storage frame corresponding to the specific UCD. One of the logical OR (XOR) and the exclusive negative OR (XNOR) is executed, and 8 bits acquired as the operation result are acquired as additional data constituent bits. .

Furthermore, an eleventh aspect of the present invention is
A computer program for executing information recording processing;
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD DC control bit selection step for performing processing;
This is a modulation data generation step for executing a data modulation process for recording target data and a DC control bit setting process to generate a modulated recording frame as recording unit data, a DC control bit setting process based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information selected in the control bit selection step;
There is a computer program characterized by comprising:

Furthermore, the twelfth aspect of the present invention is
A computer program for executing information recording processing;
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. DC control bit calculation step to be a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information calculated in the control bit calculation step;
There is a computer program characterized by comprising:

Furthermore, the thirteenth aspect of the present invention is
A computer program for executing reproduction processing of information stored in an information recording medium;
A data demodulation step for performing demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding step for performing additional data acquisition processing based on the result;
There is a computer program characterized by comprising:

Furthermore, the fourteenth aspect of the present invention is
A computer program for executing reproduction processing of information stored in an information recording medium;
A data demodulation step for performing demodulation processing of data read from the information recording medium;
An additional data decoding step of performing a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and performing a process of acquiring additional data based on the calculation result;
There is a computer program characterized by comprising:

  The computer program of the present invention is, for example, a storage medium or communication medium provided in a computer-readable format to a computer system capable of executing various program codes, such as a CD, FD, or MO. It is a computer program that can be provided by a recording medium or a communication medium such as a network. By providing such a program in a computer-readable format, processing corresponding to the program is realized on the computer system.

  Other objects, features, and advantages of the present invention will become apparent from a more detailed description based on embodiments of the present invention described later and the accompanying drawings. In this specification, the system is a logical set configuration of a plurality of devices, and is not limited to one in which the devices of each configuration are in the same casing.

  According to the configuration of the present invention, the additional data is acquired based on the correspondence between the bit value of the specific user control data (UCD) included in the recording data for the information recording medium and the DC control bit set in the recording data. Since the setting is made possible, an additional data embedding configuration with high analysis difficulty is realized.

  According to the configuration of the present invention, when the specific UCD is a UCD including additional data, the storage bits of the specific UCD and the DC control bits set in the DC control bit storage frame corresponding to the specific UCD are recorded so as to coincide with each other. When the UCD is a UCD that does not include additional data, the storage bit of the specific UCD and the DC control bit set in the DC control bit storage frame corresponding to the specific UCD are recorded as values that do not match. In the reproduction process, the bit value of the specific UCD is compared with the DC control bit set in the DC control bit storage frame corresponding to the specific UCD, and the stored data of the specific UCD is acquired as additional data if they match. it can.

  Furthermore, according to the second configuration of the present invention, arithmetic processing of the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, for example, exclusive OR ( XOR) or exclusive negative logical sum (XNOR) is executed, and the calculation result is used as a DC control bit to be set in a specific UCD-compatible DC control bit storage frame. In the reproduction process, it is possible to acquire additional data by executing a calculation process of the storage data of the specific UCD and the DC control bit set in the DC control bit storage frame corresponding to the specific UCD.

  Details of an information recording processing device, an information reproduction processing device, an information recording medium and method, and a computer program according to the present invention will be described below with reference to the drawings.

  First, the configuration and processing of the information recording processing apparatus according to the first embodiment of the present invention will be described with reference to FIG. The information recording processing apparatus described here includes a mastering apparatus as a master manufacturing apparatus called a so-called master disk, and further includes an information recording medium drive such as a DVD recording / reproducing apparatus or a PC that can be used by general users. Including the device. That is, it includes not only a master disk but also an information processing apparatus capable of writing data to various information recording media that are writable (recordable) and rewritable (rewritable).

  As shown in FIG. 1, the information recording processing apparatus includes an information recording medium 101 capable of recording data, a pickup 102 that outputs a data recording signal to the information recording medium 101, a spindle motor 103 that drives the information recording medium 101, and a pickup 102. And a servo circuit 104 for controlling the spindle motor 103, a specific UCD (user control data) position information counter and data extraction circuit 105, an error correction encoding & interleaving processing unit 106 for main data, an additional data recording area control unit 107, a switch 108, modulation data generation unit 109, DC control bit setting unit 110, recording signal processing circuit 111, user control data (UCD: User Control Data) compatible error correction encoding & interleaving processing unit 112, ECC Raster generator 113, DC control bit selection unit 114 has a main data encryption circuit 116.

  The recording data to be recorded on the information recording medium 101 includes main data composed of actual data of reproduction target data such as content, user control data (UCD) including various control data such as reproduction control information, and additional data such as encryption data. Key generation information such as encryption key information to be applied as an encryption key for encrypted content, information constituting a part of the data, or data necessary for generating the encryption key (for example, seed), password, etc. This is additional data such as confidential information or various control information such as content reproduction control and copy control.

  The additional data is set as data that can be acquired based on the correspondence between the bit value of specific user control data (UCD) and the DC control bits set in the recording data.

  The content data to be recorded on the information recording medium 101 is, for example, encrypted content data, and the main data is encrypted by the main data encryption circuit 116 with an encryption key. The main data encryption circuit 116 receives, for example, a 64-bit DES encryption key, a 128-bit AES encryption key, or a part of the configuration information, or a seed as encryption key generation information, and generates it based on the input information. Applying the encryption key, block encryption processing such as DES algorithm or AES algorithm is performed on main data such as content data to generate encrypted main data.

  The encrypted main data is input to the main data corresponding error correction encoding & interleaving processing unit 106. The main data corresponding error correction encoding & interleaving processing unit 106 generates an error correction code for the input data, performs encoding processing, and further performs interleaving processing. Details of these processes will be described later.

  The user control data (UCD) including various control data such as reproduction control information is also subjected to the UCD compatible error correction encoding & interleaving processing unit 112 so that an error correction code is generated and encoded, and the interleaving process is performed.

  In the configuration of the first embodiment, at least part of the user control data (UCD) corresponds to additional data, for example, additional data such as key information, content reproduction control information, and copy control information applied to content decryption processing. Data or data applied to derivation of additional data is stored.

  A specific UCD having the possibility of storing additional data is called a specific UCD (user control data). The specific UCD may store additional data or may not store additional data. Whether or not the specific UCD stores additional data depends on the correspondence between the storage bits (8 bits) of the specific UCD and the DC control bits set in the DC control bit storage frame corresponding to the specific UCD included in the recording data. Based on the determination. Details of this configuration will be described later.

  The specific UCD position information counter and data extraction circuit 105 is a circuit that counts the storage position or storage start position of a specific UCD based on the internal disk data address information 117 for each “cluster” that is a UCD (user control data) constituent unit. Have.

  The DC control bit selection unit 114 is designated by the bit information of the additional data information storage UCD input from the specific UCD (user control data) position information counter and the data extraction circuit 105 and the address indicating the storage position or storage start position of the additional data. The bit value selection processing of the DC control bits set in the frame (specific UCD compatible DC control bit storage frame) is executed.

  Specifically, the configuration bit [0] or [1] of the additional data stored in the specific UCD storing the additional data and the DC control bit set in the specific UCD-compatible DC control bit storage frame are set to the same value. Set to. Further, in the case of a specific UCD that does not store additional data, DC control bit selection for setting the storage bit value of the specific UCD and the DC control bit set in the DC control bit storage frame corresponding to the specific UCD to different values Execute the process. A specific processing example will be described later.

  The ECC cluster generation unit 113 generates an ECC cluster based on the interleaved main data and user control data, and the modulation data generation unit 109 inputs the ECC cluster and executes the modulation process. The modulation data generation unit 109 performs modulation based on an RLL (1, 7) modulation scheme based on modulation of 2-bit data into 3-bit data.

  The modulation based on the RLL (1, 7) modulation method is a run length restriction of RLL (1, 7) in which the number of consecutive [0] is a minimum of 1 and a maximum of 7 in the bit after modulation. This is a data conversion method for making modulation data according to the above. In this conversion process, a conversion table is used. A specific use example of the conversion table will be described later.

  Based on the modulation data based on the RLL (1, 7) modulation method, a recording unit called a recording frame in which a synchronization signal is set is generated and recorded on the information recording medium 101 via the recording signal processing circuit 111. Is done.

  In the modulation process, the DC control bit setting unit 110 sets the DC control bit (Digital Sum Variation) so that the absolute value of DSV (Digital Sum Variation) at the time of modulation is reduced at certain intervals of the input main data. After selecting and inserting “0” or “1” of DC-Control bit), modulation processing is performed.

  Digital sum variation (DSV) is an index of DC balance of an NRZI conversion signal generated as a recording signal for an information recording medium. Specifically, the bit [0] of the recording bit sequence (NRZI conversion signal) is set to “−1”, the bit [1] is set to “+1”, and the accumulated value is set as DSV, and the deviation from 0 of DSV is further reduced. In other words, after selecting and inserting “0” or “1” of a DC control bit (DC-Control bit), modulation processing is performed. Details of the NRZI conversion process will be described later.

  However, in the present invention, in the setting of the DC control bit, the DC control bit setting according to the above rule is not set for the specific selected recording frame, that is, the DC control bit storage frame corresponding to the specific UCD. The bit value selected by the control bit selection unit 114 is set as a DC control bit. That is, the configuration bit [0] or [1] of the additional data stored in the UCD (user control data) and the DC control bit set in the specific UCD-compatible DC control bit storage frame are set to have the same value. Execute processing such as setting to a different value.

  Details of the ECC cluster setting process and the modulation data generation process based on the main data and the user control data will be described with reference to FIGS. These processes are performed by the error correction encoding & interleaving processing unit 106 corresponding to the main data in FIG. 1, the error correction encoding & interleaving processing unit 112 corresponding to the user control data (UCD), the ECC cluster generation unit 113, the modulation data. This process is executed by the generation unit 109.

  The recording data includes user data 201 as main data and user control data (UCD: User Control data) 211 as shown in FIG. User data 201 corresponds to main data including entity data of reproduction target data such as content. User control data (UCD) 211 is data including various control data such as reproduction control information.

  User data 201 is set in units of 32 frames of 2048 byte data and 4 byte parity. User control data (UCD) 211 is composed of 32 units of 18-byte data.

  Based on the user data 201 of 32 frames × (2048 + 4) bytes, a data block 202 is formed. The data block 202 has an arrangement of 304 columns × 216 rows. One column (column) × one row (row) stores 1 byte (8 bit) data.

  An LDC block 203 is generated as a data block in which a parity of 32 rows (row) is added to each column for the data block 202, and an LDC cluster 204 of 152 columns × 496 rows is generated by interleaving for the LDC block 203. Is done.

  On the other hand, the user control data (UCD) 211 is combined with the physical address data 221 of 16 × 9 bytes to generate an access block 212 of 24 columns × 30 rows, and then the access block 212 is assigned to each column. A BIS block 213 is generated as a data block to which a parity of 32 rows (row) is added, and a BIS cluster 214 of 3 columns × 496 rows is generated by interleaving processing for the BIS block 213.

  3D is generated based on the same data as FIG. 2D, that is, based on the LDC cluster 204 of 152 columns × 496 rows generated based on the user data 201 and the user control data (UCD) 211. A BIS cluster 214 of 3 columns × 496 rows is shown.

  As shown in FIG. 3D, the LDC cluster 204 of 152 columns × 496 rows is divided into four parts (I to IV) in units of 38 columns, and a BIS cluster of 3 columns × 496 rows. 214 is divided into three parts (i to iii) in one column (column) unit, and these parts are alternately combined to form an ECC cluster 231 of 155 columns × 496 rows shown in FIG. Generated.

  Further, the ECC cluster 231 is set as a cluster 232 divided into 28 parts of 0 to 27 as shown in FIG. Only part 0 is 25 bits, and other parts 1 to 27 are 45 bits. Note that the number of bits shown in FIG. 3F is the number of bits per row.

  Further, as shown in FIG. 3 (g), 20 synchronization (Sync) bits are set, and 1-bit DC control bit (DC-control bit) is set between each of parts 0 to 27 in FIG. 3 (f). ) Is set.

  As a result, a physical cluster 233 of [1240 + 20 (Sync) + (1DC control × 28) = 1288] × 496 rows (row) is set. Each row of the physical cluster 233 is a recording frame 234 as a modulation data generation processing unit.

  The DC control bit is an index of DC balance of the NRZI conversion signal generated as a recording signal for the information recording medium. Specifically, the accumulated value of the bit [0] of the recording bit sequence (NRZI converted signal) as “−1” and the bit [1] as “+1” is defined as DSV, and the deviation from 0 of DSV is further reduced. In other words, “0” or “1” of a DC control bit (DC-Control bit) is selected and inserted.

  However, as described above, in the present invention, in the setting of the DC control bit, the DC control bit according to the above rule is used for a specific selected recording frame, that is, a specific UCD-compatible DC control bit storage frame. Instead of setting, the bit value selected by the DC control bit selection unit 114 is set as the DC control bit. That is, according to the additional data configuration bit [0] or [1], a DC control bit having a bit string that matches the bit value (8 bits) of specific user control data (UCD) is set or a bit string that does not match The DC bit is set to determine whether to set a DC control bit having. Details of this processing will be described later.

  A modulation process for converting 2-bit data into 3-bit data is performed on the frame in which the DC control bit is set, that is, the recording frame 234 including 1288-bit data shown in FIG. In this data conversion, RLL (1, 7) data conversion is performed to obtain modulated data in accordance with a run length restriction in which the number of consecutive [0] ranges from a minimum of 1 to a maximum of 7. A recording frame 235 is generated.

  The modulated recording frame 235 has a total of 1932 channel bits, which is 30 channel bits as modulated data bits (Sync) channel bits and (1288-20 sync bits) × 2/3 = 1902 channel bits.

  A conversion table is used for data modulation processing from 2 bits to 3 bits according to the run length rule of RLL (1, 7). An example of a specific conversion table is shown in FIG.

  As shown in FIG. 4, the conversion table is configured as a table in which modulation data bits corresponding to each input bit are associated. For example, when the input data is [00000000], the modulation data bit is [010100100100]. When the input data is [11], it is [000] if the preceding modulation data bit is [xx1], and [101] if the preceding modulation data bit is [xx0].

  By performing data conversion from 2 bits to 3 bits according to this table, modulated data bits according to the RLL (1, 7) run length rule are generated.

  Returning to FIG. 1, the description of the configuration and processing of the information recording processing apparatus of the present invention will be continued. In the modulation data generation unit 109 in FIG. 1, the modulation data generation processing described with reference to FIGS. 2 to 4 is executed, and a recording signal based on the generated modulation data is generated in the recording signal processing circuit 111.

  The recording signal processing circuit 111 generates an NRZI (Non Return to Zero Inverted) signal that inverts the polarity of the pulse according to the value [0] or [1] of the modulation data generated by the modulation data generation means 109. Is recorded on the information recording medium 101 as a recording signal.

  FIG. 5 shows an NRZI generation processing configuration as a recording signal executed in the recording signal processing circuit 111. Channel bits, which are modulation data bits output from the modulation data generation unit 109, are input to a recording signal processing circuit 111 including an NRZ conversion unit 121, an exclusive OR unit (XOR) 122, and a delay unit 123. 5A shows channel bits, FIG. 5B shows an output signal from the NRZ conversion means 121, and FIG. 5C shows an NRZI conversion pulse that is a recording signal as a final output of the recording signal processing circuit 111. This recording signal is output to the pickup 102 and recording information is recorded on the information recording medium 101 under the control of the servo circuit 104.

  In the configuration of the present invention, additional data, for example, key information applied to content decryption processing, content playback control information, copy control information, and the like are stored in specific user control data (UCD).

  For example, an 8-bit bit value of specific user control data (UCD) is used as component bits such as key information, content reproduction control information, and copy control information applied to content decryption processing.

  When the 8 bits of the specific user control data (UCD) match the 8 DC control bit values included in the recording frame storing the specific UCD-compatible DC control bits, the 8 bits of the user control data (UCD) are the additional data. If it is a configuration bit and does not match, it is not a configuration bit of additional data.

  At the time of data recording, when specific user control data (UCD), that is, when 8 bits of the specific UCD are additional data such as encryption key information, the 8 DCs included in the recording frame storing the specific UCD-compatible DC control bits When the recording bit is set by adjusting the control bit value to be the same value as the 8 bits of the specific UCD, and when the 8 bits of the specific UCD is not additional data such as encryption key information, the DC control bit storage for the specific UCD is stored. The recording frame is set and recorded by adjusting the eight DC control bit values included in the recording frame to values that are not the same as the eight bits of the specific UCD.

  The reproduction processing device that executes the content reproduction and additional data reproduction processing determines whether the eight bits of the specific UCD are bit information constituting the additional data, and whether or not the eight DCs included in the recording frame storing the specific UCD-compatible DC control bits. Judged by comparison with the control bit value. That is, if they match, it is determined that the 8 bits of the specific UCD are bit information constituting the additional data, and if they do not match, it is determined that the 8 bits of the specific UCD are the bit information not forming the additional data.

  The additional data recording area control unit 107 shown in FIG. 1 performs switch control to turn on the switch 108 when the modulation data generation unit 109 performs modulation of the recording frame storing the specific UCD-compatible DC control bit, and the DC control bit The DC control bit value selected by the selection unit 114 is output to the modulation data generation unit 109.

  The modulation data generating unit 109 is not a DC control bit having a bit value determined based on the above-described DSV measurement at the DC control bit setting position corresponding to the specific UCD in the recording frame storing the specific UCD corresponding DC control bit. The value of the DC control bit selected by the selection unit 114 is set.

  The configuration shown in FIG. 1 is a schematic block diagram for explaining the configuration and processing of the information recording processing apparatus of the present invention. For example, the control processing for setting the DC control bit to the bit setting corresponding to the specific UCD Can be executed by a control unit such as a CPU executing a program describing a processing sequence or the like. Therefore, in the information recording processing apparatus of the present invention, the hardware shown in FIG. 1 and other hardware corresponding to each constituent element of the constituent blocks are not essential. Recording frame generation processing can be executed on hardware composed of a control unit for executing processing according to a predetermined program, a CPU as a data processing unit, and a memory as a storage unit for data, parameters, etc. It is.

  The additional data includes encryption key generation information such as encryption key information to be applied as an encryption key of encrypted content, information constituting a part of the data, or data (for example, seed) necessary for generating the encryption key, And other content attribute information such as secret information such as passwords or various control information such as content reproduction control and copy control [0, 0, 0, 1, 0, 0, 0... ] Or the like. This bit string is a bit string including the error correction code set in the additional data error correction encoding unit 105 for the additional data. In the configuration of the present invention, the bit information constituting this additional data bit string is set by the above-described configuration.

  That is, by setting a DC control bit string that matches 8 bits of specific user control data (UCD) in a recording frame storing DC control bits corresponding to specific UCD, the 8 bits are concealed information such as encryption key generation information and a password. Alternatively, it is configured bits such as various control information such as content reproduction control and copy control, and other content attribute information.

That is,
When specific UCD = DC control bit corresponding to specific UCD,
Specific UCD configuration 8 bits = additional data configuration bits
In the case of specific UCD ≠ specific UCD compatible DC control bit,
Specific UCD configuration 8 bits ≠ additional data configuration bits.

  The additional data setting configuration in the present invention will be described below. FIG. 6 is a diagram showing details of the BIS block 213 and the BIS cluster 214 generated based on the user control data (UCD) 211 in the modulation data generation processing described with reference to FIGS.

  As described with reference to FIGS. 2 and 3, after the 16 × 9 byte physical address data 221 is combined with the user control data (UCD) 211 to generate an access block 212 of 24 columns × 30 rows. For the access block 212, a BIS block 213 is generated as a data block with 32 rows of parity added to each column. This is a BIS block 213 shown in FIG.

  The BIS cluster 214 of 3 columns × 496 rows is generated by the interleaving process for the BIS block 213. This is the BIS cluster shown in FIG.

  As shown in FIG. 6B, the BIS cluster includes three columns (columns) based on physical addresses of 3 rows, user control data (UCD) of 12 rows, and parity of 16 rows. ) × 31 rows (row), one unit is set. A BIS cluster 214 of 3 columns × 496 rows is configured by 16 units of units 0 to 15.

  FIG. 7 shows a detailed data storage configuration of user control data in the BIS block 213, and FIG. 8 shows a detailed data array of user control data in the BIS cluster 214.

  As shown in FIG. 7A1, the BIS block 213 includes 24 columns × 6 rows of physical addresses, 24 columns × 24 rows of user control data (UCD), and 24 columns × 32 rows of parity.

  As shown in FIG. 7 (A2), the user control data (UCD) of 24 columns × 24 rows is composed of 576 (24 × 24) pieces of UCD configuration data [UC0, 0] to 1-byte (8-bit) data. It is arranged as [UC17, 31]. Interleaving processing is performed on the BIS block 213 having such user control data (UCD) array of 24 columns × 24 rows, and a BIS cluster is generated.

  As shown in FIG. 8 (B1), the BIS cluster 214 has a configuration of 3 columns × 496 rows, has a physical address of 3 rows (row), user control data (UCD) of 12 rows (row), 16 One unit of 3 columns (column) × 31 rows (row) is set according to the parity of the row, and a BIS cluster 214 of 3 columns × 496 rows is constituted by 16 units of units 0 to 15.

  FIG. 8B2 shows user control data (UCD) of 3 columns × 12 rows of unit 0. In the user control data of unit 0, 36 (3 × 12) pieces of UCD configuration data [UC0, 12] to [UC4, 25] each consisting of 1 byte (8 bits) data are stored. The 16 units of units 0 to 15 each store 36 (3 × 12) UCD configuration data, and a total of 36 × 16 = 576 UCD configuration data is stored in the BIS cluster 214.

  The UCD configuration data stored in these BIS clusters 214 is distributed and arranged in the units 0 to 15 in the BIS cluster 214 by interleaving the configuration data of the user control data of the BIS block shown in FIG. 7 (A2). It has been done.

  User control data (UCD) is set as an area where various information such as content playback control information should be stored, but a part of it is set as a reserve area, and arbitrary data can be written. This is an important area.

  As shown in FIG. 9, the BIS cluster including user control data (UCD) is an LDC cluster 204 set based on user data such as contents as described above with reference to FIGS. An ECC cluster 231 is generated by inserting one column at a time between the four divided data I to IV.

  As shown in FIG. 9, the ECC cluster 231 is set as a cluster in which a BIS cluster of 3 columns (column) × 496 rows (row) is combined with an LDC cluster of 152 columns (column) × 496 rows (row).

  In the BIS cluster, as described with reference to FIG. 6 and others, any one of a physical address, user control data (UCD), and parity is set in each row. Accordingly, the BIS cluster (i, ii, iii) included in each of the 496 rows of the ECC cluster 231 is data of a physical address, user control data (UCD), or parity.

In the present invention, as shown in FIG. 10, a specific row selected from 496 rows constituting the ECC cluster 231 is
(A) DC control bit storage frame 311 corresponding to specific UCD
Set as.

Specific UCD (user control data), for example, one [UCx, y] in (UC0, 0) to (UC17, 31) shown in FIG. 7A2 is a specific UCD in which 8 bits of configuration bits of additional data are stored. If
(A) As a bit value corresponding to the 8-bit data stored in the specific UCD [UCx, y], that is, as a correlated bit, the values of the eight DC control bits included in the specific UCD-compatible DC control bit storage frame 311 Set.

  As shown in FIG. 10B, in the specific UCD setting frame 321, a specific UCD, that is, a specific UCD [UCa, b] storing 8-bit data is a user control data area (i) where the BIS cluster setting position is located. 322 is stored.

A case where the specific UCD [UCa, b] stores, for example, (00111101) as 8-bit data will be described.
When these 8 bits (00111101) are additional data configuration bits, (A) among the DC control bits stored in the specific UCD-compatible DC control bit storage frame 311, the 8 DC control bits are adjusted to specify the specific UCD [UCa , B] is adjusted to the same value as 8 bits (00111101).

  Also, if the 8 bits (00111101) of the specific UCD [UCa, b] are not additional data constituent bits, the 8 DC control bits are adjusted among the DC control bits stored in the specific UCD corresponding DC control bit storage frame 311. The specific UCD [UCa, b] is adjusted to a value different from 8 bits (00111101).

  The example of FIG. 10 shows an example in which one specific UCD-compatible DC control bit storage frame 311 is set in one cluster and one specific UCD [UCx, y] is set in one cluster. As a configuration in which a plurality of specific UCD-compatible DC control bit storage frames are set in one cluster and associated with different specific UCDs [UCa, b], [UCc, d], and [UCe, f], respectively, n specific UCDs May be set in one cluster as additional data configuration bits, and n × 8 bits of additional data configuration bits may be stored in one cluster.

  In the configuration of FIG. 1, configuration bit information of a specific UCD is input to the DC control bit selection unit 114. For example, in the above-described example, it is 8-bit data (00111101) of the specific UCD [UCa, b].

  When the configuration bit of the specific UCD is an additional data configuration bit, the DC control bit selection unit 114 adjusts the DC control bit of 8 bits among the DC control bits stored in the DC control bit storage frame 311 corresponding to the specific UCD, When the specific UCD [UCa, b] is adjusted to the same value as 8 bits (00111101) and the configuration bit of the specific UCD is not an additional data configuration bit, the DC control bits stored in the specific UCD-compatible DC control bit storage frame 311 By adjusting the DC control bit of 8 bits, the DC control bit value is selected so as to be different from the 8 bits (00111101) of the specific UCD [UCa, b], and the selected DC control bit value information is changed to the switch 108. To the modulation data generation unit 109.

  The modulation data generation unit 109 generates a specific UCD-compatible DC control bit storage frame having a DC control bit value input from the DC control bit selection unit 114 and performs modulation processing.

  The additional data recording area control unit 107 turns on the switch 108 at the modulation processing execution timing corresponding to the specific UCD-compatible DC control bit storage frame, and selects the selected bit information from the DC control bit selection unit 114 as the modulation data generation unit 109. Control to output to.

  When a frame other than a specific UCD-compatible DC control bit storage frame is generated or modulated, the switch 108 is turned OFF, and a normal DC control bit setting process, that is, a DC control bit setting process based on DSV measurement is performed by the DC control bit setting unit. Executed at 110.

  As shown in FIG. 10, in the DC control bit storage frame 331 corresponding to the specific UCD, 20 synchronization (Sync) bits are set, and each frame part of frame parts # 0 to # 27 having a 45-bit configuration. A 1-bit DC control bit (DC-control bit) is set.

  In this way, the DC control bit storage frame 331 corresponding to the specific UCD stores a total of 28 DC control bits # 0 to # 27. Of these, 8 DC control bits are stored in the specific UCD. That is, it is set as a DC control bit for determining whether or not the specified UCD matches or does not match, and whether or not the storage bit of the specified UCD is an additional data component bit.

  Other DC control bits are set as DC control bits having a bit value determined based on normal bit value setting processing, that is, DSV measurement.

  A detailed configuration of the specific UCD-compatible DC control bit storage frame will be described with reference to FIG.

  FIG. 11A shows a detailed configuration of a specific UCD-compatible DC control bit storage frame when specific UCD = additional data configuration bit, and FIG. 11B shows specification when specific UCD ≠ additional data configuration bit. The detailed structure of the DC control bit storage frame corresponding to UCD is shown.

In this processing example, a configuration bit = (00111101) of a specific UCD is shown,
(A) When specific UCD = additional data configuration bit Eight bits (00111101) are stored in the DC control bit storage position selected from the DC control bit storage frame corresponding to the specific UCD.

  Here, the corresponding DC control bit storage position of the specific UCD-compatible DC control bit storage frame is eight frame parts of frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24. It is. These corresponding DC control bit storage positions are examples, and can be set to arbitrary positions as long as they are preset positions. When a legitimate reproduction processing program is executed, the DC control bits are read from each of these bit positions to determine the correspondence with the specific UCD, that is, whether or not they match, and the bit value of the additional data is acquired. The Details of the reproduction process will be described later.

  The example shown in FIG. 11B is an example of specific UCD ≠ additional data configuration bits, and a bit string different from 8 bits (00111101) is present in the DC control bit storage position selected from the DC control bit storage frame corresponding to the specific UCD. Stored.

  That is, 8 bits (00111101) are stored in the corresponding DC control bit storage position of the specific UCD-compatible DC control bit storage frame 352 and frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24. ) Is stored. The DC control bits 8 bits may be any bit string as long as it is a bit string different from (00111101). In the example of the figure, (10010100) is the corresponding DC control bit storage position of the specific UCD-compatible DC control bit storage frame 352, frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, # The example stored in 24 is shown.

  As described above, in the configuration of the present invention, a part of the user control data (UCD) included in the data stored in the recording medium (disc) is set as the specific UCD, and the storage bit information of the specific UCD is added data. Depending on whether the configuration bit is used or the additional data configuration bit is not used, the DC control bit set in the specific UCD-compatible DC control bit storage frame is set to match the corresponding UCD, or the setting is set to be inconsistent. Control is performed, and additional data information such as encryption key information is embedded by applying a plurality of specific UCD-compatible DC control bit storage frames.

  As shown in FIG. 12, when DC control bit information (8 bits) for correspondence determination of a specific UCD-compatible DC control bit storage frame is [A] and bit information of the specific UCD is [B], A = B If there is, the bit information of the specific UCD = additional data constituent bits, and if A ≠ B, additional data recording / reproduction processing is executed under the setting that the bit information of the specific UCD ≠ additional data constituent bits. Is done.

  Next, a method of selecting and setting which UCD (user control data) as a specific UCD within one cluster, that is, how to select a UCD storing additional data will be described. As described above with reference to FIGS. 7 and 8, a single cluster stores a large number of UCDs [UC0, 0] to [UC17, 31] each storing 8-bit data. become. One or more of these UCDs are selected as specific UCDs.

One method for selecting a specific UCD is a method in which a common UCD, for example, [UC0, 0] is commonly set as a specific UCD in all clusters.
Alternatively, it is possible to select a plurality of UCDs at predetermined intervals such as UC [UC0,0], [UC0,5], [UC0,10]. It is.

  However, as described above, when a common UCD, that is, [UC0, 0] or [UC0, 5] is set as a specific cluster in all clusters, it is determined which UCD is a specific UCD in a certain cluster. If this is done, there is a possibility that leakage of secret information may occur by acquiring the same milar UCD from all clusters. Therefore, it is preferable to employ a method of setting different specific UCD for each cluster.

  With reference to FIG. 13, a method for setting different specific UCD for each cluster will be described.

  Data to be recorded on the disk is recorded in units of physical sectors as predetermined data recording units, and each physical sector is given a physical sector number (PS) as shown in FIG.

  Physical sector No. Is 32-bit data of PS0 to PS31. Are associated with address unit numbers AU0 to AU31 as address information.

  “0000” is recorded in the address units (AU31 to AU27), and the layer number is stored in the address units (AU26 to AU24). (Layer Number) is recorded. The address units (AU23 to AU5) have a cluster No. The address units (AU4 to AU1) are used for counting inside each cluster, and “0” is set in AU0.

  The user control data (UCD) is configured in units of clusters, and as described above with reference to FIGS. 7 and 8, each cluster stores 8-bit data [UC0, 0] ˜ Many UCDs of [UC17, 31] are stored.

  Here, as the specific cluster identification information, the cluster No. The bit data of the address unit (AU23 to AU5) in which is recorded is used. For example, as shown in FIG. 13, 4 bits of the address units (AU12 to AU9) are used as the row position information of the specific UCD, and 4 bits of the address units (AU8 to AU5) are used as the column position information of the specific UCD.

  Cluster No. In the cluster whose lower 8 bits (AU12 to AU5) are [00000000], the specific UCD is [UC0000,0000], that is, [UC0,0]. In addition, the cluster No. In the cluster whose lower 8 bits (AU12 to AU5) are [00000001], the specific UCD is [UC0000,0001], that is, [UC0,1].

  By setting in this way, different UCDs can be set as specific UCDs in each cluster.

  When a plurality of specific UCDs are set in one cluster, the specific UCD setting interval is determined in advance. For example, a UCD with an interval of 5 columns is set as a specific UCD.

  When a UCD with an interval of 5 columns is set as a specific UCD, the cluster No. In the cluster whose lower 8 bits (AU12 to AU5) are [00000000], the specific UCD is set as [UC0,0], [UC0,5], [UC0,10]. In addition, the cluster No. In the cluster whose lower 8 bits (AU12 to AU5) are [00000001], the specific UCD is set as [UC0,1], [UC0,6], [UC0,11].

  With such a specific UCD setting configuration, the specific UCD can be set at a different position for each cluster, and a configuration with high resistance against leakage of secret information is realized.

  Next, with reference to FIG. 14, a description will be given of the recording storage processing configuration of a specific UCD and a specific UCD-compatible DC control bit storage frame in a recording medium (disc).

  As described above, a plurality of ECC clusters (see FIG. 3) generated by main data such as contents and user control data (UCD) such as control information are set in the recording medium (disc) 361, and each ECC cluster unit. The recording data generation process is executed, a recording frame in which the DC control bit is set is set, and a recording signal based on the recording frame is generated and recorded.

  For example, a plurality of specific UCDs are set in the ECC cluster-A371. ECC cluster-A371 has a cluster no. Suppose that the lower 8 bits of = 000000000.

  The ECC cluster-A371 sets [UC0,0] as the first specific UCD381-1 as the specific UCD, [UC0,5] 381-2 as the second specific UCD, and [UC0,10] as the second specific UCD. It has as 3rd specific UCD381-3 ....

  At this time, whether or not each specific UCD is a constituent bit of the additional data is determined based on whether or not it matches the DC control bit of the specific UCD-compatible DC control bit storage frame.

For example, the first specific UCD [UC0, 0] 381-1 is the DC control bit 8 bits of the corresponding specific UCD-compatible DC control bit storage frame 391-1, for example, as described above with reference to FIG. As compared with the DC control bits 8 bits of frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, # 24,
When 8 bits of specific UCD [UC0,0] 381-1 = 8 DC control bits of DC control bit storage frame 391-1 corresponding to specific UCD, 8 bits of this specific UCD [UC0,0] 381-1 are Additional data configuration bits.

Also, the second specific UCD [UC0, 5] 381-2 is compared with the DC control bit 8 bits of the corresponding specific UCD-compatible DC control bit storage frame 391-2,
If 8 bits of the specific UCD [UC0, 5] 381-2 ≠ 8 bits of DC control bits of the DC control bit storage frame 391-2 corresponding to the specific UCD, the 8 bits of the specific UCD [UC0, 5] 381-2 are It is determined that it is not an additional data component bit.

The third specific UCD [UC0, 10] 381-3 is compared with the DC control bits 8 bits of the corresponding specific UCD-compatible DC control bit storage frame 391-3,
If 8 bits of specific UCD [UC0, 10] 381-3 = 8 bits of DC control bits of DC control bit storage frame 391-3 corresponding to specific UCD, 8 bits of this specific UCD [UC0, 10] 381-3 are It is determined that it is an additional data component bit.

  Similarly, a plurality of specific UCDs are extracted from the ECC cluster-A 371, and only those that match the 8 DC control bits of the specific UCD-compatible DC control bit storage frame are extracted as additional data.

  ECC cluster-B372 has a cluster No. ECC cluster-B 372 has [UC0,1] as the first specific UCD382-1, and further the second specific UCD as [UC0,6] 382. -2 ...

The specific UCD [UC0, 1] 382-1 is compared with the 8 DC control bits of the corresponding specific UCD-compatible DC control bit storage frame 392-1;
If 8 bits of specific UCD [UC0, 1] 382-1 = 8 DC control bits of DC control bit storage frame 392-1 corresponding to specific UCD, 8 bits of this specific UCD [UC0, 1] 382-1 are Additional data configuration bits.

Also, the second specific UCD [UC0, 6] 382-2 is compared with the 8 DC control bits of the corresponding specific UCD DC control bit storage frame 392-2,
If 8 bits of the specific UCD [UC0, 6] 382-2 ≠ 8 bits of DC control bits of the DC control bit storage frame 392-2 corresponding to the specific UCD, the 8 bits of the specific UCD [UC0, 6] 382-2 are It is determined that it is not an additional data component bit.

  In this way, the setting position of the specific UCD is different for each cluster stored in the disk, and whether or not the specific UCD is an additional data constituent bit is determined with the DC control bit of the specific UCD-compatible DC control bit storage frame. Since it is possible to set depending on whether or not they match, it is possible to store additional data with high analysis difficulty.

  The additional data recording area control unit 107 shown in FIG. 1 identifies the specific UCD-compatible DC control bit storage frame based on preset information, and the modulation data generation unit 109 modulates the specific UCD-compatible DC control bit storage frame. When processing is performed, the switch 108 is switched so that the set bit value of the specific UCD-compatible DC control bit included in the specific UCD-compatible DC control bit storage frame is output from the DC control bit selection unit 114 to the modulation data generation unit 109. .

The DC control bit selection unit 114 inputs bit information of a specific UCD,
When specific UCD bit information = additional data configuration bit,
A bit value that matches the bit information of the specific UCD is selected as a DC control bit and output to the modulation data generation unit 109.
If the specific UCD bit information is not the additional data configuration bit,
A bit value that does not match the bit information of the specific UCD is selected as a DC control bit and output to the modulation data generation unit 109.

  Based on the bit value input from the DC control bit selection unit 114, the modulation data generation unit 109 sets the input bit value at the specific UCD-compatible DC control bit setting position in the specific UCD-compatible DC control bit storage frame. A recording frame is generated and modulation processing is performed.

  Next, the additional data recording processing sequence executed in the information recording processing apparatus of the present invention will be described with reference to FIG.

  In step S101, user control data (UCD) is input. As described above, the user control data (UCD) is data composed of a plurality of UCDs (UC0, 0 to UC17, 31) each including 8-bit data.

  In step S102, the address position information, that is, the physical sector No. described above with reference to FIG. UCD row position information and column position information are obtained based on specific bits of an address unit (AU) as address information corresponding to, that is, a part of configuration bits of the cluster number, and UCD corresponding to the position information is obtained. Is identified and acquired as a specific UCD.

  In step S103, it is determined whether the acquired specific UCD is a UCD storing additional data. The additional data is encryption key information such as encryption key information to be applied as an encryption key of the encrypted content, information constituting a part of the data, or data (for example, seed) necessary for generating the encryption key. It is data composed of various information such as information, secret information such as a password, and various control information such as content reproduction control and copy control.

  Information necessary for processing to determine whether the acquired specific UCD is a UCD storing additional data is previously input to the apparatus from the outside by user input or the like.

  If the selected specific UCD is the additional data storage UCD, the process proceeds to step S104, and DC control bits to be set in the specific UCD-compatible DC control bit storage frame, for example, frame parts # 3, # 6, # 9, # 12, The 8 bits set in the eight frame parts # 15, # 18, # 21, and # 24 are set to values that match the bit value of the specific UCD (user control data) acquired in step S102.

  If it is determined in step S103 that the selected specific UCD is not the additional data storage UCD, the process proceeds to step S105, and DC control bits to be set in the specific UCD-compatible DC control bit storage frame, for example, frame parts # 3, # 6, The 8 bits set in the eight frame parts # 9, # 12, # 15, # 18, # 21, and # 24 are set to values that do not match the bit value of the specific UCD (user control data) acquired in step S102. To do.

  Next, proceeding to step S106, modulation processing of a specific UCD-compatible DC control bit storage frame is executed.

  In step S107, it is determined whether or not the processing corresponding to all the specific UCDs in the same cluster has been completed. If not, the process proceeds to step S108 to acquire the next specific UCD, and steps S103 to S106 are performed. Repeat the process. In the process of acquiring the next specific UCD in step S108, for example, when the first specific UCD in the cluster to be processed is [UC0, 0], the column position information is incremented by a preset value, and [UC0 , 5] is executed as processing for acquiring the next specific UCD.

  If it is determined in step S107 that the processing corresponding to all the specific UCDs in the same cluster has been completed, the process proceeds to step S109, where it is determined whether or not the additional data superimposition processing has been completed, and there is unprocessed data. In this case, the processes in and after step S102 are repeatedly executed.

  In step S109, the determination is made that there is no unprocessed data, and the processing ends, that is, recording data into which additional data bits are inserted is generated according to the above-described processing.

  In the flow, only the processing for the specific UCD-compatible DC control bit storage frame is shown. However, in the frames other than the specific UCD-compatible DC control bit storage frame, the recording frame in which the DC control bit based on the DSV measurement is set. Are generated and modulated. Also, the specific UCD-compatible DC control bit storage position in the specific UCD-compatible DC control bit storage frame, that is, eight frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24 are included. For the 8 bits set in the frame part, the value selected according to the above-described processing is set as the DC control bit. However, for the DC control bits of other frame parts, the DC control bit based on the DSV measurement is set. .

  In addition, the specific UCD-compatible DC control bit storage position in the specific UCD-compatible DC control bit storage frame is only the position of frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24. Any position can be set.

  In the embodiment, the example in which the bit value 8 bits of the specific user control data (UCD) is set as either additional data or not is described. May be used as bit data of the additional data.

  Furthermore, in the above-described embodiment, the configuration bit of the specific UCD is the additional data configuration bit depending on whether or not the bit value of the specific UCD matches the DC control bit for determination of the specific UCD correspondence in the specific UCD-compatible DC control bit storage frame. In the example of processing for determining whether or not the bit value of the specific UCD matches the specific UCD corresponding DC control bit in the specific UCD corresponding DC control bit storage frame, the configuration bit of the additional data [1], [0] when they do not match, or vice versa.

  Next, the configuration and playback processing sequence of an information playback processing apparatus that performs playback processing of an information recording medium that stores the above-described additional data and content (main data) such as movies and music will be described.

  With reference to FIG. 16, the configuration and processing of the information reproduction processing apparatus will be described. The information reproduction processing apparatus includes an information recording medium 401, a pickup 403 that reads data from the information recording medium 401, a spindle motor 402 that drives the information recording medium 401, a servo circuit 404 that controls the pickup 403 and the spindle motor 402, reading An RF circuit unit 405 that performs signal processing such as signal gain adjustment to generate an RF signal, a synchronization detection unit 406 that extracts a synchronization signal from the RF signal, a data demodulation processing unit 407 that performs data demodulation processing, and an additional data area Only, the switch 410 for outputting the read signal of the information recording medium to the additional data decoding unit 408, the area of the additional data is detected, the additional data recording area detecting unit 411 for controlling the switch 410, and the additional data decoding process are executed. Additional data decoding unit 4 8. Data division unit 412 that divides main data and user control data (UCD) based on the demodulated data output from the data demodulation processing unit 407, error correction and main data corresponding error correction and deinterleaving processing for main data Deinterleave processing unit 413, error correction & deinterleave processing unit 414 corresponding to user control data (UCD) for performing error correction and deinterleave processing of user control data (UCD), and address information (see FIG. 13) 415 inside the disk is acquired. Then, a UCD storing additional data, that is, a position of a specific UCD is calculated, and a specific UCD position information counter and a data extraction circuit 416 are provided for performing selective increment processing to selectively acquire the specific UCD.

  The content data stored in the information recording medium 401 is, for example, encrypted content data, and the additional data stored in the information recording medium 401 is encryption key information applied as an encryption key of the encrypted content, or a part thereof Information that makes up data, encryption key generation information such as data required to generate an encryption key (for example, seed), secret information such as passwords, and various controls such as content playback control and copy control It is data composed of various information such as information and other content attribute information.

  Data read from the information recording medium 401 via the pickup 403 is subjected to signal processing such as gain adjustment in the RF circuit unit 405 and input to the synchronization detection unit 406. The synchronization detection unit 406 detects a synchronization signal (sync) in the recording signal and outputs the detection signal to the additional data recording area control unit 411.

  The additional data recording area control unit 411 determines the recording area of the specific UCD-compatible DC control bit storage frame based on the synchronization signal input from the synchronization detection unit 406, and controls the switch 410 based on the determination information. By this switch control, the additional data decoding unit 408 that performs the decoding process of the additional data receives the recording frame in the area necessary for decoding the additional data, that is, the recording frame including the DC control bit storage frame corresponding to the specific UCD. Input from the unit 407.

  The additional data decoding unit 408 inputs the specific UCD-compatible DC control bit storage frame from the data demodulation processing unit 407 via the switch 410, and also inputs the specific UCD from the specific UCD position information counter and the data extraction circuit 416, A process of comparing the UCD-compatible DC control bit and the bit value of the specific UCD is executed, and a process of acquiring only the matching data as additional data constituent bits is executed.

  The specific UCD position information counter and data extraction circuit 416 obtains the address information (see FIG. 13) 415 inside the disk, calculates the position of the UCD storing the additional data, that is, the specific UCD, and executes a predetermined increment process. To select and acquire specific UCD

  The additional data decoding unit 408 selects, from the specific UCD position information counter and the data extraction circuit 416, only UCDs that store additional data from the specific UCDs that are sequentially input, and stores these additional data storage UCDs. Acquire additional data based on the bit information.

  That is, only when the DC control bit information for specific UCD correspondence determination and the specific UCD bit information match, it is determined that the bit information stored in the specific UCD is an additional data constituent bit, and is added based on the bit information. Get the data.

  In the playback apparatus, when the data processed in the data demodulation processing unit 407 is a specific UCD-compatible DC control bit storage frame, the frame data is input to the additional data decoding unit 408 via the switch 410, and the additional data decoding unit In 408, a specific DC control bit of the specific UCD correspondence determination DC control bit frame is acquired, and a process of determining whether the specific UCD is a constituent bit of the additional data based on the determination of the correspondence with the specific UCD bit is executed. To do. The additional data recording area detection unit 411 performs control to turn on the switch 410 when the data demodulation processing unit 407 executes processing of the specific UCD-compatible DC control bit storage frame.

  The additional data decoding unit 408 performs the same processing based on the specific UCD-compatible DC control bit storage frame and the specific UCD that are intermittently input, for example, key information of n-bit information, key generation information, or Additional data such as content reproduction control information, content copy control information, and other content attribute information is acquired.

  When the additional data is, for example, key information applied to content decryption, the output destination of the additional data is a decryption processing unit that executes content decryption processing. In the case of content reproduction control information, it becomes a reproduction control unit.

  On the other hand, as for general data other than the additional data, read data of the information recording medium is output from the synchronization detection unit 406 to the data demodulation unit 407, and the reverse data conversion described above with reference to FIGS. The playback data is acquired.

  The data dividing unit 412 divides main data and user control data (UCD) based on the demodulated data output from the data demodulation processing unit 407, and the main data is processed by the main data corresponding error correction & deinterleave processing unit 413. Error correction and deinterleaving are performed. The user control data (UCD) is output after being subjected to error correction and deinterleaving in a user control data (UCD) compatible error correction & deinterleave processing unit 414.

  When the output main data is, for example, encrypted content, decryption processing using an encryption key that can be generated based on key generation information output as additional data is performed, and then output means such as a display and a speaker are Is output via.

  The configuration shown in FIG. 16 is a schematic block diagram for explaining the configuration and processing of the information reproduction processing device of the present invention. For example, acquisition of a specific UCD-compatible DC control bit storage frame, acquisition of additional data, The analysis process can be executed by a control unit such as a CPU executing a program describing a processing sequence or the like. Accordingly, in the information reproduction processing apparatus of the present invention, the hardware shown in FIG. 16 and other hardware corresponding to each constituent element of the constituent blocks are not essential. Additional data acquisition and reproduction processing is performed on hardware configured by a control unit for executing processing according to a predetermined program, a CPU as a data processing unit, and a memory as a storage unit for data, parameters, and the like. It is feasible.

  An application process example of additional data acquired by the information reproduction processing device will be described with reference to FIGS. 17 and 18. As described above, the additional data includes, for example, encryption such as encryption key information to be applied as a content encryption key, information constituting a part of the data, or data (for example, seed) necessary for generating the encryption key. Key generation information, content reproduction control information, content copy control information, secret information such as a password, and other content attribute information.

  FIG. 17A shows that the additional data is encryption key information to be applied as the content encryption key, information constituting a part of the data, or data (eg, seed) required to generate the encryption key. An example of processing in the case of encryption key generation information is shown. The information reproduction processing apparatus applies the acquired encryption key information, executes a main data decryption process, and executes a process of reproducing contents such as music and video. For the decryption process, for example, an encryption algorithm such as DES or AES is applied.

  FIG. 17B shows an example of processing when the additional data is content reproduction control information corresponding to the content stored as the main data. In this case, the reproduction control of the main data (content) is executed according to the reproduction control information acquired as the additional data. For example, in content reproduction, output mode control such as 5.1 channel output control, reproduction allowable range control such as an intro part, and the like are executed according to the reproduction control information as additional data.

  FIG. 18 shows processing when the additional data is confidential information such as a password, and content reproduction is permitted by password verification. A password 511 as additional data is input to the confidential information verification unit 512, and a comparison verification process with password information input from an external input device or the like is executed. Only when collation is established, the switch 513 is set to ON, and data reproduction of content as main data, for example, music, video, etc., can be executed.

  Next, a playback processing sequence including additional data reading will be described with reference to FIG. The process of FIG. 19 is a process executed in the reproduction processing apparatus shown in FIG.

  In step S201, the position information of the specific UCD is acquired based on the address information written on the disc (see FIG. 13). In step S202, demodulation processing data of the specific UCD-compatible DC control bit storage recording frame is acquired, and the additional data recording area detection unit 411 shown in FIG. 16 determines the demodulation timing of the specific UCD-compatible DC control bit storage recording frame. The specific UCD compatible DC control bit storage recording frame is output from the data demodulation processing unit 407 to the additional data decoding unit 408.

  In step S203, the additional data decoding unit 408, from the specific UCD-compatible DC control bit storage recording frame input from the data demodulation processing unit 407, stores the specific UCD-compatible DC control bit storage position, for example, frame parts # 3, # 6, The DC control bit values set in the eight frame parts # 9, # 12, # 15, # 18, # 21, and # 24 are acquired. These bit information is assumed to be [A].

  Next, the additional data decoding unit 408 acquires the specific UCD from the specific UCD position information counter and data extraction circuit 416 in step S204. The bit information of the specific UCD is [B].

In step S205, the additional data decoding unit 408
DC control bit information [A] = specific UCD bit information [B]
Whether or not is satisfied is determined.

DC control bit information [A] = specific UCD bit information [B]
Is established, in step S206,
It is determined that specific UCD bit information [B] = additional data constituent bits.
DC control bit information [A] ≠ specific UCD bit information [B]
Is established, in step S207,
It is determined that the specific UCD bit information [B] ≠ additional data configuration bit.

  In step S208, it is determined whether or not the processing corresponding to all the specific UCDs in the same cluster has been completed. If not, the process proceeds to step S209 to acquire the next specific UCD, and steps S202 to S208 are performed. Repeat the process.

  In the process of obtaining the next specific UCD in step S209, for example, when the first specific UCD in the cluster to be processed is [UC0, 0], the column position information is incremented by a preset value, and [UC0 , 5] is executed as processing for acquiring the next specific UCD.

  If it is determined in step S208 that the processes corresponding to all the specific UCDs in the same cluster have been completed, the process proceeds to step S210, where it is determined whether the additional data extraction process has been completed, and there is unprocessed data. In this case, the processes in and after step S202 are repeatedly executed. If it is determined that all of the additional data has been acquired, the process ends.

  Next, the value calculated as the result of the operation of the stored data of the specific UCD (user control data) and the additional data, for example, the exclusive logical sum (XOR) or the exclusive negative logical sum (XNOR) is specified as the specific UCD. An example of processing for setting a DC control bit to be set in the corresponding DC control bit storage frame will be described as a second embodiment.

  FIG. 20 shows a configuration of an information recording processing apparatus according to the second embodiment. In FIG. 20, the same components as those in the information recording processing apparatus according to the first embodiment described above with reference to FIG.

  The information recording processing apparatus according to the second embodiment includes additional data, for example, encryption key information applied as an encryption key for encrypted content, information constituting a part of the data, or data necessary for generating the encryption key. In the additional data error correction encoding unit 601, additional data 600 such as encryption key generation information such as (for example, seed), confidential information such as a password, or various control information such as content reproduction control and copy control, Error correction coding is executed and further input to the DC control bit calculation unit 602.

  The DC control bit calculation unit 602 receives the additional data subjected to error correction coding and receives the specific UCD from the specific UCD position information counter and the data extraction circuit 105.

  The specific UCD position information counter and data extraction circuit 105 is the same as the specific UCD position information counter and data extraction circuit 105 in the first embodiment, and executes processing for determining and acquiring the specific UCD.

  The DC control bit calculation unit 602 performs arithmetic processing based on the constituent bits of the additional data and the stored bit information of the specific UCD, and determines the value of the DC control bit to be set in the specific UCD-compatible DC control bit storage frame.

  The DC control bit calculation unit 602 executes an arithmetic process of the stored data of the specific UCD (user control data) and the additional data, for example, an exclusive logical sum (XOR) or an exclusive negative logical sum (XNOR). The calculation result is output to the modulation data generation unit 109 via the switch 108 to generate a specific UCD-compatible DC control bit storage frame in which the DC control bit based on the calculation result is set.

  The other components shown in FIG. 20 are the same as those described in the first embodiment with reference to FIG.

  The arithmetic processing executed in the DC control bit calculation unit 602 will be described with reference to FIG.

  In FIG. 21, exclusive OR (XOR) is executed as a calculation process between the storage data of the specific UCD (user control data) and the additional data, and the exclusive OR operation result is stored in the DC control bit storage frame corresponding to the specific UCD. An example in which the DC control bits are set in FIG.

In the example of FIG.
Additional data configuration bit = (01011010)
Specific UCD storage bit = (00111101)
And
The additional data component bits are, for example, encryption key information to be applied as an encryption key for encrypted content, information constituting a part of the data, or data (for example, seed) necessary for generating the encryption key. These bits are part of additional data such as encryption key generation information, secret information such as a password, and various control information such as content reproduction control and copy control.

The DC control bit calculation unit 602 performs exclusive OR (XOR) of the additional data configuration bit = (01011010) and the specific UCD storage bit = (00111101),
Operation result = (01100111)
Is calculated.

  The calculated calculation result (01100111) is set as the value of the DC control bit set in the specific UCD-compatible DC control bit storage frame.

  The calculation result is output to the modulation data generation unit 109 via the switch 108, and a specific UCD-compatible DC control bit storage frame in which a DC control bit based on the calculation result is set is generated.

  For example, like the specific UCD-compatible DC control bit storage frame 621 shown in FIG. 21, the frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24 are included in the eight frame parts. The result of the exclusive OR (XOR) of the additional data component bit = (01011010) and the specific UCD storage bit = (00111101) is stored = (01100111).

  The UCD-compatible DC control bit storage position is an example, and can be set to an arbitrary position as long as it is a preset position. When a legitimate reproduction processing program is executed, the DC control bits are read from each of these bit positions, an operation (exclusive OR) with the specific UCD is executed, and additional data is acquired as the operation result. The

  That is, in the reproduction processing apparatus, exclusive OR of the DC control bit (01100111) and the specific UCD storage bit (00111101) is executed, and the additional data configuration bit (01011010) is acquired.

  In FIG. 21, an example in which an exclusive OR (XOR) operation is performed as the arithmetic processing is shown. However, an exclusive negative OR (XNOR) or other arithmetic processing may be performed. However, in the data recording process, the DC control bit is calculated by calculating the additional data and the specific UCD, and in the data reproduction process, the additional data is calculated by calculating the specific UCD and the DC control bit. is necessary.

  Next, an additional data recording processing sequence executed by the data recording processing apparatus according to the second embodiment will be described with reference to FIG.

  In step S301, user control data (UCD) is input. As described above, the user control data (UCD) is data composed of a plurality of UCDs (UC0, 0 to UC17, 31) each including 8-bit data.

  In step S302, the address position information, that is, the physical sector No. described above with reference to FIG. UCD row position information and column position information are obtained based on specific bits of an address unit (AU) as address information corresponding to, that is, a part of configuration bits of the cluster number, and UCD corresponding to the position information is obtained. Is identified and acquired as a specific UCD.

  Next, in step S303, additional data component bits subjected to error correction coding processing are acquired. The additional data is encryption key information such as encryption key information to be applied as an encryption key of the encrypted content, information constituting a part of the data, or data (for example, seed) necessary for generating the encryption key. It is data composed of various information such as information, secret information such as a password, and various control information such as content reproduction control and copy control.

  Here, in order to execute an operation with a specific UCD (8 bits), an exclusive logical sum or an exclusive negative logical sum, additional data is acquired 8 bits at a time.

  In step S304, an operation (an operation such as exclusive OR or exclusive negative OR) of the specific UCD (8 bits) and additional data is executed.

  In step S305, the DC control bit of the recording frame storing the specific UCD-compatible DC control bit is set to a bit value that matches the operation result. For example, 8 bits set in 8 frame parts of frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24 are set as bit values of the calculation result in step S304.

  Next, proceeding to step S306, modulation processing of a specific UCD-compatible DC control bit storage frame is executed.

  In step S307, it is determined whether or not the processing corresponding to all the specific UCDs in the same cluster has been completed. If not, the process proceeds to step S308 to acquire the next specific UCD, and steps S303 to S306 are performed. Repeat the process. In the process of obtaining the next specific UCD in step S308, for example, when the first specific UCD in the cluster to be processed is [UC0, 0], the column position information is incremented by a preset value, and [UC0 , 5] is executed as processing for acquiring the next specific UCD.

  If it is determined in step S307 that the processing corresponding to all the specific UCDs in the same cluster has been completed, the process proceeds to step S309, where it is determined whether or not the additional data superimposition processing has been completed, and there is unprocessed data. In this case, the processes in and after step S302 are repeatedly executed.

  In step S309, the determination is made that there is no unprocessed data, and the processing ends, that is, recording data into which additional data bits are inserted is generated according to the above-described processing.

  In the flow, only the processing for the specific UCD-compatible DC control bit storage frame is shown. However, in the frames other than the specific UCD-compatible DC control bit storage frame, the recording frame in which the DC control bit based on the DSV measurement is set. Are generated and modulated. Also, the specific UCD-compatible DC control bit storage position in the specific UCD-compatible DC control bit storage frame, that is, eight frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24 are included. As for the 8 bits set in the frame part, the value of the calculation result according to the above processing is set as the DC control bit. However, for the DC control bits of other frame parts, the DC control bit based on the DSV measurement is set. Is done.

  In addition, the specific UCD-compatible DC control bit storage position in the specific UCD-compatible DC control bit storage frame is only the position of frame parts # 3, # 6, # 9, # 12, # 15, # 18, # 21, and # 24. Any position can be set.

  Next, the configuration of the information reproduction processing apparatus and the reproduction processing sequence in the second embodiment will be described.

  FIG. 23 shows the configuration of the information reproduction processing apparatus according to the second embodiment. In FIG. 23, the same components as those of the information reproduction processing apparatus according to the first embodiment described above with reference to FIG.

  The additional data recording area control unit 411 determines the recording area of the specific UCD-compatible DC control bit storage frame based on the synchronization signal input from the synchronization detection unit 406, and controls the switch 410 based on the determination information. By this switch control, the additional data decoding unit 711 that executes the decoding process of the additional data receives the recording frame in the area necessary for decoding the additional data, that is, the recording frame including the DC control bit storage frame corresponding to the specific UCD. Input from the unit 407.

  The additional data decoding unit 711 receives the specific UCD-compatible DC control bit storage frame from the data demodulation processing unit 407 via the switch 410, and also inputs the specific UCD from the specific UCD position information counter and the data extraction circuit 416, A calculation process of the UCD compatible DC control bit and the bit value of the specific UCD is executed.

  In other words, the additional data decoding unit 711 executes arithmetic processing such as exclusive OR (XOR) or exclusive negative OR (XNOR) of the specific UCD-compatible DC control bit and the bit value of the specific UCD, A process for acquiring the result as additional data is executed.

  The specific UCD position information counter and data extraction circuit 416 obtains the address information (see FIG. 13) 415 inside the disk, calculates the position of the UCD storing the additional data, that is, the specific UCD, and executes a predetermined increment process. To select and acquire specific UCD

  In the playback apparatus, when the data processed in the data demodulation processing unit 407 is a specific UCD-compatible DC control bit storage frame, the frame data is input to the additional data decoding unit 711 via the switch 410, and the additional data decoding unit In 711, a specific DC control bit of the specific UCD correspondence determination DC control bit frame is acquired, and an operation with the specific UCD bit is executed to acquire a constituent bit of the additional data.

  The additional data recording area detection unit 411 performs control to turn on the switch 410 when the data demodulation processing unit 407 executes processing of the specific UCD-compatible DC control bit storage frame.

  The additional data decoding unit 711 performs the same arithmetic processing based on the specific UCD-compatible DC control bit storage frame and the specific UCD that are intermittently input, for example, key information of n-bit information or key generation information, Alternatively, additional data such as content reproduction control information, content copy control information, and other content attribute information is acquired.

  Next, a playback processing sequence including additional data reading will be described with reference to FIG. The process of FIG. 24 is a process executed in the reproduction processing apparatus shown in FIG.

  In step S401, the position information of the specific UCD is acquired based on the address information (see FIG. 13) written on the disc. In step S402, demodulation processing data of the specific UCD-compatible DC control bit storage recording frame is acquired, and the additional data recording area detection unit 411 illustrated in FIG. 23 determines the demodulation timing of the specific UCD-compatible DC control bit storage recording frame. The specific UCD-compatible DC control bit storage recording frame is output from the data demodulation processing unit 407 to the additional data decoding unit 711.

  In step S403, the additional data decoding unit 711 stores the specific UCD-compatible DC control bit storage position from the specific UCD-compatible DC control bit storage recording frame input from the data demodulation processing unit 407, for example, frame parts # 3, # 6, The DC control bit values set in the eight frame parts # 9, # 12, # 15, # 18, # 21, and # 24 are acquired. These bit information is assumed to be [C].

  Further, in step S404, the bit information of the specific UCD is acquired from the specific UCD input from the specific UCD position information counter and the data extraction circuit 416. Let this be [B].

In step S405, the additional data decoding unit 711
Arithmetic processing (for example, exclusive OR (XOR), exclusive negative OR (XNOR), etc.) of DC control bit information [C] and specific UCD bit information [B] is executed.

  In step S406, the calculation processing result of the DC control bit information [C] and the specific UCD bit information [B] is set in the additional data array.

  In step S407, it is determined whether or not the processing corresponding to all the specific UCDs in the same cluster has been completed. If not, the process proceeds to step S408 to acquire the next specific UCD, and steps S402 to S407 are performed. Repeat the process.

  In the process of acquiring the next specific UCD in step S408, for example, when the first specific UCD in the cluster to be processed is [UC0, 0], the column position information is incremented by a preset value, and [UC0 , 5] is executed as processing for acquiring the next specific UCD.

  If it is determined in step S407 that the processes corresponding to all the specific UCDs in the same cluster have been completed, the process proceeds to step S409, where it is determined whether the additional data extraction process has been completed, and there is unprocessed data. In this case, the processes in and after step S402 are repeatedly executed. If it is determined that all of the additional data has been acquired, the process ends.

  The present invention has been described in detail above with reference to specific embodiments. However, it is obvious that those skilled in the art can make modifications and substitutions of the embodiments without departing from the gist of the present invention. In other words, the present invention has been disclosed in the form of exemplification, and should not be interpreted in a limited manner. In order to determine the gist of the present invention, the claims section described at the beginning should be considered.

  The series of processes described in the specification can be executed by hardware, software, or a combined configuration of both. When executing processing by software, the program recording the processing sequence is installed in a memory in a computer incorporated in dedicated hardware and executed, or the program is executed on a general-purpose computer capable of executing various processing. It can be installed and run.

  For example, the program can be recorded in advance on a hard disk or ROM (Read Only Memory) as a recording medium. Alternatively, the program is temporarily or permanently stored on a removable recording medium such as a flexible disk, a CD-ROM (Compact Disc Read Only Memory), an MO (Magneto optical) disk, a DVD (Digital Versatile Disc), a magnetic disk, or a semiconductor memory. It can be stored (recorded). Such a removable recording medium can be provided as so-called package software.

  The program is installed on the computer from the removable recording medium as described above, or is wirelessly transferred from the download site to the computer, or is wired to the computer via a network such as a LAN (Local Area Network) or the Internet. The computer can receive the program transferred in this manner and install it on a recording medium such as a built-in hard disk.

  Note that the various processes described in the specification are not only executed in time series according to the description, but may be executed in parallel or individually according to the processing capability of the apparatus that executes the processes or as necessary. Further, in this specification, the system is a logical set configuration of a plurality of devices, and the devices of each configuration are not limited to being in the same casing.

  As described above, according to the configuration of the present invention, the correspondence between the bit value of specific user control data (UCD) included in the recording data for the information recording medium and the DC control bit set in the recording data Since the configuration for setting additional data based on the configuration is made, an additional data embedding configuration with high analysis difficulty is realized.

  Further, according to the configuration of the present invention, when the specific UCD is a UCD including additional data, the storage bits of the specific UCD and the DC control bits set in the specific UCD-compatible DC control bit storage frame are recorded in a matched manner. When the specific UCD is a UCD that does not include additional data, the storage bit of the specific UCD and the DC control bit set in the DC control bit storage frame corresponding to the specific UCD are recorded as values that do not match. In the reproduction process, the bit value of the specific UCD is compared with the DC control bit set in the DC control bit storage frame corresponding to the specific UCD, and the stored data of the specific UCD is acquired as additional data if they match. it can.

  Furthermore, according to the second configuration of the present invention, arithmetic processing of the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, for example, exclusive OR ( XOR) or exclusive negative logical sum (XNOR) is executed, and the calculation result is used as a DC control bit to be set in a specific UCD-compatible DC control bit storage frame. In the reproduction process, it is possible to acquire additional data by executing a calculation process of the storage data of the specific UCD and the DC control bit set in the DC control bit storage frame corresponding to the specific UCD.

  Therefore, the configuration of the present invention stores, for example, content that requires copyright protection in a recording medium, and applies key information, key generation information, content reproduction control information, copy control information, etc. applied to the decryption processing of the content. Can be applied to an information recording processing apparatus, an information reproduction processing apparatus, and an information recording medium in a configuration in which it is necessary to embed the additional data in a form that is difficult to analyze.

It is a figure which shows the structure of the information recording processing apparatus of 1st Example of this invention. It is FIG. (1) explaining the detail of the process of the modulation data generation part in the information recording processing apparatus of this invention. It is FIG. (2) explaining the detail of the process of the modulation data generation part in the information recording processing apparatus of this invention. It is a figure explaining the data structure of the conversion table applied in the modulation process in the information recording processing apparatus of this invention. It is a figure explaining the detail of the process performed in the recording signal processing circuit in the information recording processing apparatus of this invention. It is a figure explaining the detailed structure of a BIS block and a BIS cluster. It is a figure explaining the user control data structure in a BIS block. It is a figure explaining the user control data structure in a BIS cluster. It is a figure explaining the production | generation process structure of the ECC cluster based on a LDC cluster and a BIS cluster. It is a figure explaining the correspondence and structure of specific UCD corresponding DC control bit storage recording frame and specific UCD. It is a figure explaining DC control bit setting of a specific UCD corresponding DC control bit storage recording frame. It is a figure explaining the correspondence of specific UCD and additional data based on the coincidence of the specific UCD corresponding DC control bit and the specific UCD bit. It is a figure explaining the method for setting different specific UCD for every cluster. It is a figure explaining the structure of the specific UCD corresponding DC control bit storage recording frame stored in an information recording medium, and specific UCD. It is a figure which shows the flowchart explaining the additional data recording process sequence performed in the information recording processing apparatus of this invention. It is a figure which shows the structure of the information reproduction processing apparatus which concerns on 1st Example of this invention. It is a figure explaining the example of an additional data application process in an information reproduction processing apparatus. It is a figure explaining the example of an additional data application process in an information reproduction processing apparatus. It is a figure which shows the flowchart explaining the additional data recording process sequence performed in the information reproduction | regeneration processing apparatus of this invention. It is a figure which shows the structure of the information recording processing apparatus of 2nd Example of this invention. It is a figure explaining the recording process structure of the additional data in 2nd Example of this invention. It is a figure which shows the flowchart explaining the additional data recording process sequence performed in the information recording processing apparatus in 2nd Example of this invention. It is a figure which shows the structure of the information reproduction processing apparatus which concerns on 2nd Example of this invention. It is a figure which shows the flowchart explaining the additional data recording process sequence performed in the information reproduction | regeneration processing apparatus which concerns on 2nd Example of this invention.

Explanation of symbols

101 Information Recording Medium 102 Pickup 103 Spindle Motor 104 Servo Circuit 105 Specific UCD Position Information Counter and Data Extraction Circuit 106 Main Data Corresponding Error Correction Coding & Interleave Processing Unit 107 Additional Data Recording Area Control Unit 108 Switch 109 Modulation Data Generation Unit 110 DC Control bit setting unit 111 Recording signal processing circuit 112 UCD compatible error correction coding & interleaving processing unit 113 ECC cluster generation unit 114 DC control bit selection unit 116 Main data encryption circuit 117 Internal disk data address information 121 NRZ conversion means 122 XOR
123 Delay means 201 User data 202 Data block 203 LDC block 204 LDC cluster 211 User control data (UCD)
212 Access Block 213 BIS Block 214 BIS Cluster 221 Physical Address 231 ECC Cluster 232 Cluster 233 Physical Cluster 234 Recording Frame 235 Modulation Recording Frame 311 Specific UCD Corresponding DC Control Bit Storage Recording Frame 321 Specific UCD Storage Recording Frame 322 User Control Data (UCD)
331 Specific UCD compatible DC control bit storage recording frame 351 Specific UCD compatible DC control bit storage recording frame 352 Specific UCD compatible DC control bit storage recording frame 371 ECC cluster 381, 382 Specific UCD
391, 392 Specific UCD compatible DC control bit storage recording frame 401 Information recording medium 402 Spindle motor 403 Pickup 404 Servo circuit 405 RF circuit unit 406 Synchronization detection unit 407 Data demodulation processing unit 408 Additional data decoding unit 410 Switch 411 Additional data recording area control Section 412 Data Dividing Section 413 Main Data Corresponding Error Correction & Deinterleave Processing Section 414 UCD Corresponding Error Correction & Deinterleave Processing Section 415 Disc Internal Data Address Information 416 Specific UCD Position Information Counter and Data Extraction Circuit 600 Additional Data 601 Additional Data Error Correction Coding unit 602 DC control bit calculation unit 621 DC control bit storage frame corresponding to specific UCD 711 Additional data decoding unit

Claims (51)

In the information recording processing apparatus,
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD A DC control bit selection unit for executing processing;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation unit that selectively executes DC control bit setting processing based on input information from the control bit selection unit;
An information recording processing apparatus comprising: The specific UCD is 8-bit data,
The DC control bit selector is
If the specific UCD is an additional data storage UCD, the eight DC control bits set in the specific UCD-compatible DC control bit storage frame are matched with the 8-bit value of the additional data storage UCD,
When the specific UCD is an additional data non-storage UCD, a DC control bit selection that sets the eight DC control bits set in the specific UCD-compatible DC control bit storage frame to a value different from the 8-bit value of the additional data storage UCD The information recording processing apparatus according to claim 1, wherein the information recording processing apparatus is configured to execute processing. The information recording processing apparatus includes:
A specific UCD position information counter for performing selection of the specific UCD;
The DC control bit selector is
2. The information according to claim 1, wherein a DC control bit selection process set in a specific UCD-compatible DC control bit storage frame corresponding only to a specific UCD selected by the specific UCD position information counter is executed. Record processing device. The information recording processing apparatus includes:
A specific UCD position information counter for performing selection of the specific UCD;
The specific UCD location information counter is
The information recording processing apparatus according to claim 1, wherein the information recording processing apparatus is configured to execute a process of selecting a specific UCD based on address information corresponding to recording data for the information recording medium. The specific UCD location information counter is
5. The configuration according to claim 4, wherein a process for specifying row position information and column position information of a UCD is executed based on a configuration bit of cluster identification information in address information corresponding to recording data for an information recording medium. Information recording processing device. The modulation data generation unit
At least part of the DC control bits to be set in the specific UCD-compatible DC control bit storage frame selected from the recording target data is set based on the DC control bit information input from the DC control bit selection unit, and other DC control The information recording processing apparatus according to claim 1, wherein the bit is configured to execute a process of setting based on DSV measurement. The information recording processing apparatus includes:
The additional data is
The content is set as configuration information of at least one of encryption key information, encryption key generation information, content reproduction control information, content copy control information, and a password stored in the information recording medium. Item 4. The information recording processing apparatus according to Item 1. The modulation data generation unit
2. The information recording processing apparatus according to claim 1, wherein the information recording processing apparatus is configured to generate a modulation recording frame by executing data conversion processing satisfying RLL (1, 7) as a run length rule. The modulation data generation unit
The information recording processing apparatus according to claim 1, wherein the information recording processing apparatus is configured to execute a modulation recording frame generation process including a conversion process of 2-bit information to 3-bit information. In the information recording processing apparatus,
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. A DC control bit calculation unit for making a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation unit that selectively executes DC control bit setting processing based on input information from the control bit calculation unit;
An information recording processing apparatus comprising: The DC control bit calculation unit
Either the exclusive logical sum (XOR) or the exclusive negative logical sum (XNOR) of the storage data of the specific UCD and the additional data is executed, and the calculation result is stored in the specific UCD-compatible DC control bit storage frame. The information recording processing apparatus according to claim 10, wherein the information recording processing apparatus is configured to be a DC control bit to be set. The specific UCD is 8-bit data,
The DC control bit calculation unit
An arithmetic operation of either exclusive OR (XOR) or exclusive negative OR (XNOR) of 8 bits of stored data of the specific UCD and 8 bits of additional data constituent bits is executed and acquired as the operation result 8 11. The information recording processing apparatus according to claim 10, wherein the information recording processing apparatus is configured to have eight DC control bits set in the specific UCD-compatible DC control bit storage frame. An information reproduction processing device that executes reproduction processing of information stored in an information recording medium,
A data demodulator that performs demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding unit that executes acquisition processing of additional data based on the result;
An information reproduction processing apparatus comprising: The additional data decoding unit
The DC control bit acquired from the specific UCD-compatible DC control bit storage frame is configured to execute processing for determining that the specific UCD is a UCD including additional data when the specific UCD matches the specific UCD. Item 14. The information reproduction processing device according to Item 13. The specific UCD is 8-bit data,
The additional data decoding unit
It is determined whether the stored 8-bit data of the specific UCD matches the eight DC control bit data selected from the specific UCD-compatible DC control bit storage frame, and the specific UCD is added based on the determination result The information reproduction processing apparatus according to claim 13, wherein the information reproduction processing apparatus is configured to execute a process of determining whether or not data is included. The information reproduction processing device includes:
A specific UCD position information counter for performing selection of the specific UCD;
The additional data decoding unit
14. The configuration according to claim 13, wherein the process of determining a correspondence relationship with a DC control bit of a specific UCD-compatible DC control bit storage frame is performed only for the specific UCD selected by the specific UCD position information counter. The information reproduction processing device described. The information reproduction processing device includes:
A specific UCD position information counter for performing selection of the specific UCD;
The specific UCD location information counter is
14. The information recording / reproducing apparatus according to claim 13, wherein the information recording / reproducing apparatus is configured to execute a process of selecting a specific UCD based on address information corresponding to recording data for the information recording medium. The specific UCD location information counter is
18. The configuration for executing the process of specifying UCD row position information and column position information based on configuration bits of cluster identification information in address information corresponding to recording data for an information recording medium. Information reproduction processing device. An information reproduction processing device that executes reproduction processing of information stored in an information recording medium,
A data demodulator that performs demodulation processing of data read from the information recording medium;
An additional data decoding unit that executes a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and executes a process of acquiring additional data based on the calculation result;
An information reproduction processing apparatus comprising: The additional data decoding unit
As an arithmetic process between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, an arithmetic process of either exclusive OR (XOR) or exclusive negative OR (XNOR) is executed. 20. The information reproduction processing device according to claim 19, wherein the information reproduction processing device is configured to execute a process of acquiring the calculation result as an additional data constituent bit. The additional data decoding unit
An arithmetic operation of either exclusive OR (XOR) or exclusive negative OR (XNOR) between 8 bits of storage data of the specific UCD and 8 bits of DC control bits acquired from the DC control bit storage frame corresponding to the specific UCD 20. The information reproduction processing apparatus according to claim 19, wherein the information reproduction processing apparatus is configured to execute and execute a process of acquiring 8 bits acquired as the operation result as additional data constituent bits. An information recording medium,
Information on whether or not additional data has been stored in a specific UCD selected from UCD (user control data) included in the recorded data,
An information recording medium characterized by having a data recording configuration that enables analysis based on a value of a DC control bit set in a specific UCD-compatible DC control bit storage frame. The information recording medium is
When the specific UCD is an additional data storage UCD, the DC control bit of the specific UCD-compatible DC control bit storage frame is set as a value corresponding to the storage bit information of the specific UCD,
When the specific UCD is an additional data non-storage UCD, the DC control bit of the specific UCD-compatible DC control bit storage frame is set as a value not corresponding to the storage bit information of the specific UCD, and is a multinomial system. The information recording medium according to claim 22. The information recording medium is
The additional data is stored as configuration information of at least one of encryption key information, encryption key generation information, content reproduction control information, content copy control information, and password information stored in the information recording medium. The information recording medium according to claim 22, An information recording medium,
Bit information calculated as a calculation result of the storage bit information of the specific UCD selected from the UCD (user control data) included in the recording data and the constituent bit information of the additional data is set in the DC control bit storage frame corresponding to the specific UCD. An information recording medium having a configuration recorded as DC control bits. The information recording medium is
A configuration in which either the exclusive logical sum (XOR) or the exclusive negative logical sum (XNOR) of the storage data of the specific UCD and the additional data is used as the DC control bit of the specific UCD-compatible DC control bit storage frame. 26. The information recording medium according to claim 25, wherein there is an information recording medium. In the information recording processing method,
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD DC control bit selection step for performing processing;
This is a modulation data generation step for executing a data modulation process for recording target data and a DC control bit setting process to generate a modulated recording frame as recording unit data, a DC control bit setting process based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information selected in the control bit selection step;
An information recording processing method characterized by comprising: The specific UCD is 8-bit data,
The DC control bit selection step includes:
If the specific UCD is an additional data storage UCD, the eight DC control bits set in the specific UCD-compatible DC control bit storage frame are matched with the 8-bit value of the additional data storage UCD,
When the specific UCD is an additional data non-storage UCD, a DC control bit selection that sets the eight DC control bits set in the specific UCD-compatible DC control bit storage frame to a value different from the 8-bit value of the additional data storage UCD 28. The information recording processing method according to claim 27, wherein the information recording processing method is a step of executing processing. The information recording processing method further includes:
A specific UCD position information counter step for performing the selection of the specific UCD;
The DC control bit selection step includes:
28. The information recording process according to claim 27, wherein a DC control bit selection process set in a specific UCD-compatible DC control bit storage frame corresponding only to the specific UCD selected in the specific UCD position information counter step is executed. Method. The information recording processing method further includes:
A specific UCD position information counter step for performing the selection of the specific UCD;
The specific UCD position information counter step includes:
28. The information recording processing method according to claim 27, wherein the information recording processing method is a step of executing a process of selecting a specific UCD based on address information corresponding to recording data for the information recording medium. The specific UCD position information counter step includes:
31. The step of executing a process of specifying UCD row position information and column position information based on configuration bits of cluster identification information in address information corresponding to recording data for an information recording medium. Information recording processing method. The modulation data generation step includes
At least a part of the DC control bits set in the specific UCD-compatible DC control bit storage frame selected from the recording target data is set based on the DC control bit information selected in the DC control bit selection step, and other DC 28. The information recording processing method according to claim 27, wherein the control bit is set based on DSV measurement. The information recording processing method includes:
The additional data is
The information is set as configuration information of at least one of encryption key information, encryption key generation information, content reproduction control information, content copy control information, and a password stored in the information recording medium. The information recording processing method described. The modulation data generation step includes
28. The information recording processing method according to claim 27, wherein a modulation recording frame is generated by executing data conversion processing satisfying RLL (1, 7) as a run length rule. The modulation data generation step includes
The information recording processing method according to claim 27, wherein modulation recording frame generation processing including conversion processing of 2-bit information into 3-bit information is executed. In the information recording processing method,
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. DC control bit calculation step to be a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information calculated in the control bit calculation step;
An information recording processing method characterized by comprising: The DC control bit calculation step includes:
Either the exclusive logical sum (XOR) or the exclusive negative logical sum (XNOR) of the storage data of the specific UCD and the additional data is executed, and the calculation result is stored in the specific UCD-compatible DC control bit storage frame. 37. The information recording processing method according to claim 36, wherein the information recording processing method is a step of setting a DC control bit to be set. The specific UCD is 8-bit data,
The DC control bit calculation step includes:
An arithmetic operation of either exclusive OR (XOR) or exclusive negative OR (XNOR) of 8 bits of stored data of the specific UCD and 8 bits of additional data constituent bits is executed and acquired as the operation result 8 37. The information recording processing method according to claim 36, wherein the information recording processing method is a step of setting bits to eight DC control bits set in the specific UCD-compatible DC control bit storage frame. An information reproduction processing method for executing reproduction processing of information stored in an information recording medium,
A data demodulation step for performing demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding step for performing additional data acquisition processing based on the result;
An information reproduction processing method characterized by comprising: The additional data decoding step includes:
And a step of executing a process of determining that the specific UCD is a UCD including additional data when the DC control bit acquired from the specific UCD-compatible DC control bit storage frame matches the specific UCD. Item 40. The information reproduction processing method according to Item 39. The specific UCD is 8-bit data,
The additional data decoding step includes:
It is determined whether the stored 8-bit data of the specific UCD matches the eight DC control bit data selected from the specific UCD-compatible DC control bit storage frame, and the specific UCD is added based on the determination result 40. The information reproduction processing method according to claim 39, further comprising a step of executing processing for determining whether or not data is included. The information reproduction processing method includes:
A specific UCD position information counter step for performing the selection of the specific UCD;
The additional data decoding step includes:
40. Correspondence determination processing with a DC control bit of a specific UCD-compatible DC control bit storage frame is executed only for the specific UCD selected in the specific UCD position information counter step. Information reproduction processing method. The information reproduction processing method includes:
A specific UCD position information counter step for performing the selection of the specific UCD;
The specific UCD position information counter step includes:
40. The information recording / reproducing method according to claim 39, wherein the information recording / reproducing method is a step of executing a process of selecting a specific UCD based on address information corresponding to recording data for the information recording medium. The specific UCD position information counter step includes:
44. The method according to claim 43, further comprising a step of executing a process of identifying row position information and column position information of a UCD based on configuration bits of cluster identification information in address information corresponding to recording data for an information recording medium. Information reproduction processing method. An information reproduction processing method for executing reproduction processing of information stored in an information recording medium,
A data demodulation step for performing demodulation processing of data read from the information recording medium;
An additional data decoding step of performing a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and performing a process of acquiring additional data based on the calculation result;
An information reproduction processing method characterized by comprising: The additional data decoding step includes:
As an arithmetic process between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, an arithmetic process of either exclusive OR (XOR) or exclusive negative OR (XNOR) is executed. 46. The information reproduction processing method according to claim 45, wherein a process of acquiring the calculation result as an additional data constituent bit is executed. The additional data decoding step includes:
An arithmetic operation of either exclusive OR (XOR) or exclusive negative OR (XNOR) between 8 bits of storage data of the specific UCD and 8 bits of DC control bits acquired from the DC control bit storage frame corresponding to the specific UCD 46. The information reproduction processing method according to claim 45, wherein the information reproduction processing method is executed, and processing for acquiring 8 bits acquired as the calculation result as additional data constituent bits is executed. A computer program for executing information recording processing;
When the specific UCD selected from the UCD (user control data) to be recorded on the information recording medium is the additional data storage UCD, the DC control bit set in the specific UCD-compatible DC control bit storage frame corresponds to the bit value of the specific UCD. If the specific UCD is a non-additional data non-storage UCD, the DC control bit selection is performed so that the DC control bit set in the specific UCD-compatible DC control bit storage frame is different from the bit value of the additional data non-storage specific UCD DC control bit selection step for performing processing;
This is a modulation data generation step for executing a data modulation process for recording target data and a DC control bit setting process to generate a modulated recording frame as recording unit data, a DC control bit setting process based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information selected in the control bit selection step;
A computer program characterized by comprising: A computer program for executing information recording processing;
A calculation process is performed on the storage data of the specific UCD set in the UCD (user control data) recorded on the information recording medium and the additional data, and the calculation result is set in the DC control bit storage frame corresponding to the specific UCD. DC control bit calculation step to be a DC control bit;
A modulation data generating unit that performs data modulation processing on recording target data and DC control bit setting processing to generate a modulated recording frame as recording unit data, and performs DC control bit setting processing based on DSV control, or the DC A modulation data generation step for selectively executing a DC control bit setting process based on the information calculated in the control bit calculation step;
A computer program characterized by comprising: A computer program for executing reproduction processing of information stored in an information recording medium;
A data demodulation step for performing demodulation processing of data read from the information recording medium;
A process for determining the correspondence between the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD is executed, and it is determined whether or not the specific UCD includes additional data based on the result of the correspondence determination. An additional data decoding step for performing additional data acquisition processing based on the result;
A computer program characterized by comprising: A computer program for executing reproduction processing of information stored in an information recording medium;
A data demodulation step for performing demodulation processing of data read from the information recording medium;
An additional data decoding step of performing a calculation process of the DC control bit acquired from the specific UCD-compatible DC control bit storage frame and the specific UCD, and performing a process of acquiring additional data based on the calculation result;
A computer program characterized by comprising:

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