ES2547411T3 - Recording medium, reading / writing method and reading / writing device - Google Patents

Abstract

An apparatus for reading / writing data from / on a recording medium, the apparatus comprising: a pick-up unit (11) configured to read or write data from or on the recording medium; and a controller (16) operatively coupled to the acquisition unit (11), configured to read version information of the recording medium from the recording medium, the version information including a first compatibility version information and a second compatibility version information usable to determine an accessibility to read / write the data from / on the recording medium; the controller (16) configured to determine the access possibility to read / write the data based on the first compatibility version information or on the second compatibility version information, the access possibility to read the data being determined based on to the first compatibility version information, and the possibility of access to record the data being determined based on the second compatibility version information if access to read the data is possible based on the first compatibility version information, wherein the access to write the data is determined to be impossible if the access to read the data is impossible based on the first compatibility version information, wherein the first compatibility version information is incremented sequentially whenever a specification of the recording medium is changed to a range that does not have any read compatibility, the second information The compatibility version is incremented sequentially whenever a specification of the recording medium is changed to a predetermined range that has no write compatibility while maintaining read compatibility.

Description

E10184078

09-16-2015

DESCRIPTION

Recording medium, reading / writing method and reading / writing device

5 Technical Field The present invention relates to a recording medium and a method of recording control information thereof and, more particularly, to a method of recording read / write control information associated with a version of a media corresponding recording as control information and to a method of reading / writing the recording medium and to a device using the recorded control information.

10 Background of the art Generally, an optical disc on which a large volume of data can be recorded is widely used as an optical recording medium. Recently, many efforts have been made to develop a new high density optical recording medium (HD-DVD), in which video data can be recorded and stored

15 high definition and high quality audio data, such as a Blu-ray disc (hereinafter, abbreviated BD) and the like.

The Blu-ray Disc (BD), as an example of a next-generation HD-DVD technology, is the next-generation optical recording solution capable of storing data to significantly exceed the storage capacity of conventional DVD. And the technological specifications of the global standards for the BD are being established.

Various types of standard suggestions associated with the Blu-ray disc have been proposed. Specifically, various specifications have been prepared for a rewritable Blu-ray disc - 2x (or higher) (BD-RE), after the 1x rewritable Blu-ray disc, single-write Blu-ray disc (BD-R), and read-only Blu-ray disc (BD-ROM).

Despite the Blu-ray disc of the same series, the version of the contents specified for the Blu-ray disc continues to be updated to keep up with technological developments. For example, disk specifications

30 of the 1x recordable Blu-ray disc (BD-RE) continue to extend just like those of the 2x (or higher) rewritable Blu-ray disc (BD-RE). Therefore, the contents of the specification, increasingly extensive, must be managed as disk version information.

However, when playing a recording of a disc of a higher version, even if the

35 reading / writing is impossible or even if an error occurs in the execution of the read / write, a read / write device designed, suitable for a lower version according to an extension of a disk version, continues retrying the execution of the reading / write to cause a system error.

WO 03/025935 describes a method, a device and a means for processing pieces of information

40 of data recorded to provide compatibility (restricted) with higher versions of device / media in which a defined behavior of an older device is provided, if you have to manage information from a higher version number than the one supported by it.

Exhibition of the Invention

Accordingly, the present invention is directed to provide a recording medium and a method of recording control information thereof that substantially avoid one or more problems due to the limitations and disadvantages of the related art.

An object of the present invention is to provide a method of recording read / write control information associated with a version of recording medium as specified information within a management area of a recording medium.

Another object of the present invention is to provide a read / write method and an apparatus that uses the control information in carrying out a read / write of a recording medium.

The advantages, objects and additional features of the invention will be set forth in part in the following description and in part will be apparent to persons with ordinary knowledge in the field after an examination of the following description or can be learned with the practice of the invention. . The objectives and other advantages of the invention can be achieved and achieved by the structure indicated particularly in the

60 written description and its claims, as well as the attached drawings.

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In order to achieve these objects and other advantages and according to the purpose of the invention, according to the embodiment and the broad description herein, an apparatus is provided for reading / recording data from / on a recording medium as claimed in the claim. 1, a method of reading / writing data from a recording medium as claimed in claim 9, and a recording medium as claimed in claim 12. Additional embodiments of the invention are defined in the subclaims .

It should be understood that both the above general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide a further explanation of the invention as claimed.

Brief Description of the Drawings The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated into, and constitute a part of this application, illustrate the embodiment or embodiments of the invention and, together with the description, serve to explain the principle of the invention. In the drawings:

Figure 1 is a structural diagram of a single layer disc according to the present invention; Figure 2 is a structural diagram of a single-layer, read-only disk according to the present invention; Figure 3 is a diagram of a management zone in which the control information of the present invention is written, in which the control information is written in a corresponding zone; Figure 4A and Figure 4B are diagrams of a method of writing control information according to a first embodiment of the present invention; Figure 5 is a diagram of a method of writing control information according to a second embodiment of the present invention; Figure 6A and Figure 6B are diagrams of a method of writing control information according to a third embodiment of the present invention; Figure 7 is a diagram of an optical disk read / write apparatus applicable to the present invention; and Figure 8 and Figure 9 are flow charts of an optical disk read / write method applicable to the present invention.

Best Mode for Carrying Out the Invention Now, reference will be made in detail to the preferred embodiments of the present invention, the examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numbers will be used in all drawings to refer to equal or similar parts.

Furthermore, although the terms used in the present invention are possibly selected from those well known at present, in some cases, some terms are arbitrarily selected by the applicant so that their meanings are explained in detail in the following description. Therefore, the present invention should be understood with the intended meanings of the corresponding terms selected by the applicant instead of the simple names or meanings of the terms themselves.

In the present invention, a "recording medium" includes all types of data recording media, such as an optical disc, a magnetic tape and the like, regardless of their recording mechanism. For the convenience of the explanation of the present invention, a Blu-ray (BD) disc is taken, by way of example, as an example of an optical disc. However, it is clear that the technical concept of the present invention is applicable to other recording media in the same way.

"Control information" means different types of information for reading / writing the disc of the Blu-ray disc and corresponds to "disc information" written in a specific area of the Blu-ray disc (BD) or "physical format information" written in DVD-RAM / -RW / + RW for example. First, the "disc information (hereinafter abbreviated ID)" corresponding to a case of a Blu-ray disc (BD) is explained, for convenience, as follows. However, it is clear that the concept of the present invention is applicable to other discs of different formats (for example, the DVD series) used as the same concept, in the same way.

The present invention relates to a method of recording read / write control information associated with the disc version information. First, the disc version information is explained and then a method of writing the disc version information as "disc information (ID)" within a Blu-ray disc for the disc is explained in detail. control information

First, in relation to the "disk version information", as indicated in description 3

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Previously, a disk version is defined each time a new specification element is added according to the development of the disk technology of the same series and a disc author records, in a specific area of a disc, information indicating with what type of version the corresponding disk is prepared, so that a read / write device (shown in Figure 7) for reading / writing the corresponding disk searches for the information of the disk version written on the disk for reading / writing.

The present invention is characterized in that the disc information is recorded as specified, mutually recognizable information, between a disc and a read / write apparatus when recording the disc version information as control information (for example, the disc information (ID)). And the present invention is characterized in that it uses the disk version information to carry out an efficient read / write control between a read / write apparatus and a disk with different versions.

Figure 1 and Figure 2 show optical disk structures to which the present invention is applied.

Figure 1 shows a rewritable Blu-ray disc (BD-RE / R) of a single layer that has a recording layer. And Figure 2 shows a read-only Blu-ray disc (BD-ROM) of a single layer that has a recording layer.

Figure 1 is a structural diagram of a single layer disc having a recording layer according to the present invention, in which the disc information (ID) of a Blu-ray disc (BD) is written as control information. on a disk

With reference to Figure 1, an input zone is provided as a management zone in a zone of the inner circumference of an optical disk of the present invention, while an output zone is provided as a management zone in a zone of the outer circumference of the optical disk. Specifically, a prerecorded zone and a rewritable zone or a single write zone are separated from each other within the area of the inner circumference of the disc. The pre-recorded area is an area in which data has already been recorded during disc manufacturing, so that a user or system is unable to record data in the pre-recorded area at all. Specifically, on the Blu-ray disc (BD), the pre-recorded zone is called the PIC (Permanent Information and Control Data, control data and permanent information) zone. And the disc information, such as information necessary for recording discs and the like, is recorded in the PIC zone. However, the disk information (ID) of the present invention does not necessarily have to exist within the PIC zone. And it is clear that disk information can be recorded within another management area.

In a data zone a user data zone is provided, in which the actual user data is recorded, and free ISA and OSA zones to replace a generated defective zone. Specifically, a TDMA (Temporary Defect Management Area, temporary fault management zone) is provided to record defect information and general management within a management zone on said single-write optical disk, such as BD-R. In the case of re-recordable BD-RE, it is not necessary for TDMA to remain as a reserved area.

Figure 2 is a structural diagram of a read-only, single-layer disc, having a recording layer according to the present invention to explain a location in which the ID disk information of the present invention is recorded.

In the case of the read-only disc, all areas of the disc are configured with pre-recorded zones. The ID disk information associated with the present invention can be written in a PIC zone within an input zone, which is the same as a single write disk shown in Figure 1.

The present invention, as indicated in Figure 1 and Figure 2, is intended to provide a method of writing read / write control information associated with the disk version of the present invention in an efficient manner, as well as a method of recording write speed information for reading / writing and writing strategy information (hereinafter abbreviated as WS) as disk information (ID) recorded in the pre-recorded area. And the method of writing the disk information (ID) of the present invention is explained in detail below.

Figure 3 is a structural diagram of a PIC zone on the disc shown in Figure 1 or Figure 2. With reference to Figure 3, on a Blu-ray disc, "a cluster" represents a minimum recording unit, five hundred Forty-four clusters are grouped together to build a fragment as a superior recording unit, and five fragments in total are grouped together to form a PIC zone.

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The ID disk information is registered in a front header cluster of a first IF0 fragment. The ID disk information is written plurally for each recording layer and the speed allowed by a corresponding optical disk, and an ID disk information may include one hundred and twelve bytes. Specifically, the disk information configured above is sometimes referred to as a disk information frame (ID). In addition, the same contents of the ID disk information are repeatedly recorded in each front-head cluster of the rest of the fragments, thus being able to cope with a loss of ID disk information.

Specifically, on the recordable disc shown in Figure 1, the information representing the corresponding recording layer and the recording speed and the writing strategy information (WS) corresponding to the recording layer and the speed are recorded within each Disc information Recordable disc ID, as well as disc version information. Therefore, said information is used in the reading / writing of the corresponding optical disk, thus allowing efficient reading / writing.

However, because a write-only operation cannot be performed on the read-only disk shown in Figure 2, the recording speed information and the writing strategy (WS) information for the disc recording will not be included. within the ID disk information.

A method of recording read / write control information associated with a disk version according to the present invention is explained in detail, by means of various embodiments with reference to Figures 4A to 8, as indicated below. For the convenience of explanation, a recordable disc is taken as an example. However, as indicated in the previous description, the method is also applicable to a read-only disk, in the same way.

Figure 4A and Figure 4B show a method of writing disk information (ID) as control information on an optical disk according to a first embodiment of the present invention, in which an area for recording read control information / writing in it is assigned separately.

Specifically, an area is provided for recording at least one ID disk information therein within an optical disc, and an order of each ID disk information is decided according to its sequence number to be recorded by one byte. For example, the corresponding information is recorded in a fifth byte within the ID disk information, it is called "frame sequence number ID in the block ID", and is briefly represented by "00h, 01h, 02h", etc. Specifically, if the fifth byte information is "00h", it means the first disk information. If the fifth byte information is "03h", it means the fourth disk information.

The write strategy information (WS) that interacts with the write speed indicated by the corresponding ID disk information is recorded in an area called "write strategy parameters" field in the (L ~ 111) -ths bytes for ID disk information, and read / write control information is recorded in an area called "read / write operation control" field in the Ninth byte, such as ID disk information.

The “read / write operation control” field is divided into two parts, where the “recordable version number” is recorded in the first four bits and the second four bits are assigned as a zone for the recording of the “type number of compatibility with reading ”in it.

The "read / write operation control" field is explained in detail below.

First, the main version information of a corresponding disc is represented using the "recordable version number" within the "read / write operation control" field. For example, if a disk corresponds to version1.xx (V1.xx), it is represented as "version number = 0001". If the disc corresponds to version2.xx (V2.xx), it is represented as “version number = 0010”. And if the disk corresponds to version3.xx (V3.xx), it is represented as "version number = 0011".

Therefore, if a disc of a higher version written as “version number = 0010” (V2.xx) is loaded into a read / write device of a lower version (V1.xx), the read / write device of the lower version you should not make a recording on the disc loaded from a higher version. In this way, in the case where the larger version disc is loaded, the read / write device confirms the corresponding disc version information written in the field "recordable version information (version number)" inside the disc loaded so as not to perform an access operation to perform a write on the corresponding disk, but to instantly inform a user, etc., that the corresponding disk cannot be recorded in response.

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Specifically, the reading / writing apparatus has permission to execute a write on the corresponding disk only if a disk having a permitted write version is loaded. And the device reads the corresponding control information from the ID disk information.

And the "read compatibility type number" within the "read / write operation control" field, which is the information that indicates whether a reproduction is allowed or not, has a meaning that indicates that the reproduction of a disc that It has a “type of reading compatibility type” higher than that of the reading / writing device is prohibited. In this way, the read / write device confirms the information of the corresponding disc version written in the field "Number of reading compatibility type" on the loaded disc so as not to perform an access operation to perform a write on the corresponding disk, but to inform, instantaneously, a user, etc., that the corresponding disk is not readable in response.

Preferably, the "reading compatibility type number" has the following restriction conditions.

Specifically, within the same recordable version information (version number), a value of "Type of reading compatibility type" is not changed, but is maintained. For example, it means that the “Read compatibility type number” of each disc is not allowed to have a different value “0001” or “0010” in the same recordable version information (“version number = 0011”) which indicates version3.xx.

In other words, if the reading compatibility information (Reading compatibility type number) is set to "0001" or "0010", the version information may represent the same recordable version number ("version number = 0011 ”) indicating version3.xx (V3.xx, x: 0 ~ 9) taking a value of the reading compatibility information (reading compatibility type number) as a reference. Specifically, the reading compatibility information (reading compatibility type number) should be decided before the version information to decide compatibility and, more particularly, compatibility with previous versions. And, the version information value can be changed as long as the value of the reading compatibility information is maintained.

A method for deciding compatibility will be explained in detail with reference to Figure 8 or Figure 9.

Figure 4B is provided to further explain the "type of reading compatibility type" in the same embodiment of Figure 4A.

Specifically, in Figure 4A, in case the recordable version information (version number) corresponds to "0001" (V1.xx) or "0010" (V2.xx), the same compatibility information can be applied to the reading (Type of reading compatibility number = 0000). However, in Figure 4B, in case the recordable version information (version number) corresponds to “0001” (V1.xx) or “0010” (V2.xx), compatibility information can be applied with the reading (Reading compatibility type number = 0000) and the reading compatibility information (Reading compatibility type number = 0001), respectively.

However, as shown in Figure 4A or Figure 4B, in case the recordable version information (version number) is represented only by the higher version information (V1.xx, V2.xx, V3. xx, ...) and if it is impossible to record only information, confusion occurs in a "compatible bridge state".

Specifically, in case a version1.1 (V1.1) is the 1X / 2X recording standard and if the standard to be compatible with a new 4X speed standard is unable to comply with the 1X ~ 4X global speed, the “Compatible bridge state” means the standard that allows 2X to be partially compatible and the 1X speed to be incompatible by regulating version2.0 (V2.0) as 2X / 4X speed and making 2X compatible with version1.1 (V1. 1) standard.

Therefore, in the case of the "compatible bridge state", it cannot be completely decided as "prohibited writing", but is made recordable for a partially compatible part. To do this, if reading compatibility is maintained in the design of the read / write device, the read / write device reproduces the disk information (ID) to read the recording condition (eg, writing strategy, parameters of writing strategy, etc.) of each speed and decides if the speed is permissible for writing. This will be explained in detail with reference to Figure 8, below.

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Figure 5 is a diagram of a method of writing disk information (ID) of an optical disk as control information according to a second embodiment of the present invention, in which a zone is assigned separately for recording control information. Read / write

With reference to Figure 5, at least one ID disk information is recorded on a disk and the order of each ID disk information is decided according to its sequence number to be recorded by one byte. For example, the corresponding information is recorded in a fifth byte within the ID disk information, it is called the "frame sequence ID in block ID" field, and is briefly represented by "00h, 01h, 02h, ...". Specifically, if the information of the fifth byte is “00h”, it means the first disk ID information. If the information of the fifth byte is "03h", it means the fourth disk information ID.

The L-th ~ 111-th bytes within the ID disk information are called a "write strategy parameters" field. And the write strategy information (WS) that interacts with the write speed indicated by the corresponding ID disk information is recorded in the "write strategy parameters" field. A nth byte is called a "Disk version number (write compatibility)" field and the write control information of the read / write control information of the present invention is recorded in the "Version number of the disk (write support) ”. And a byte (N + 1) -th is called a field "Number of type of reading compatibility" and the read control information of the read / write control information of the present invention is recorded in the field " Number of type of reading compatibility ”.

Specifically, in comparison with the first embodiment (Figure 4A, Figure 4B) according to the present invention, the second embodiment (Figure 5) according to the present invention extends the field "Disk version number (write compatibility)" to indicate a lower version, as well as a higher version.

The field "Disk version number (write support)" is divided into two parts, in which "the higher version information (1st version info)" is recorded in the first four bits and the "version information lower (2nd version info) ”is recorded in the second four bits.

In the case of version 1.0 (V1.0), the field "Disk version number (write support) is set to" 0001 0000 ". In the case of version 1.1 (V1.1), the “Disk version number (reading compatibility) field is set to“ 0001 0001 ”. In the case of version 3.1 (V3.1), the field "Disk version number (reading support) is set to" 0011 0001 ".

Using the above definition, the disk version can be indicated correctly. And by deciding a writing possibility with reference to the version information, the reading / writing apparatus can improve its reliability.

However, in the second embodiment of the present invention, as well as in the first embodiment, the field "Type of reading compatibility type" preferably has the restriction condition indicated above.

Specifically, in the case where higher version information of the recordable version (version number) is similar, the value of "Type of reading compatibility type" does not change, but is maintained.

Figure 6A shows a method of recording ID disk information of an optical disk as control information according to a third embodiment of the present invention, in which an area for recording read / write control information associated with the version information The disc maintains compatibility with a method of recording disc information (ID) on the 1X recordable Blu-ray disc (BD-RE), which is currently being described.

With reference to Figure 6A, an 11th byte of disk ID information is called a "Disk size / version" field for recording disk size information and version information therein. The "size information" is recorded in the first two bits b7 and b6, the "Read compatibility type number" is recorded in the second two bits b5 and b4, and the "recordable version information (version number (write support)) ”is recorded in the third four bits b3 to b0.

The Blu-ray disc (BD) currently described has a size of only 12 cm. Thus, if the disk size information corresponds to "00b", it means a case of 12 cm. And the rest is left as an area reserved for a disk size (for example, 8 cm) that will be added as a standard later.

If the 11th byte is set to "00 00 0001b", it means that the disk has a size of 12 cm, than "Number 7

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The type of reading compatibility ”is“ 00 ”, and that the recordable version information (version number) is“ 0001 ”.

In the third embodiment of the present invention (Figure 6), the reading compatibility information (Reading compatibility type number) has the restriction condition of having the same value in the same recordable version information (number of version). To solve the problem of the "compatible bridge state", the possibility of final recording should be decided with reference to other information (for example, recording speed information, etc.) in the design of a read / write device. Figure 6B shows a modified example of Figure 6A, in which the field names are modified in part. Specifically, “reading compatibility information (Reading compatibility type number” in Figure 6A is changed to “Read compatible version information (Read compatible version number)” and “compatible version information with write (version number) ”is changed to“ write compatible version information (write compatible version number) ”.

Therefore, it is clear that the above modifications can be developed in various name modifications. For example, "reading compatibility information (reading compatibility type number)" in Figure 6A is simply modified to "class information (Class)" and "writing compatible version information (number of version) ”can be modified to“ version information (Version). In this case, the “class information (Class)” is converted to information indicating a disk version compatible with the reading and the “version information (Version)” is converted to information indicating a disk version compatible with the reading. writing.

Figure 7 is a diagram of a read / write apparatus on an optical disk applicable to the present invention.

With reference to Figure 7, a read / write apparatus on an optical disk applicable to the present invention includes a read / write unit 10, which performs a read / write of the optical disk, and a control unit 20 which controls the read / write unit 10. The control unit 20 provides a read or write command for a specific zone, and the read / write unit 10 performs the read / write in the specific zone according to the command of the control unit 20.

Specifically, the read / write unit 10 includes an interface unit 12 that communicates with an external device, a pickup unit 11 that writes the data directly to the optical disk or reads the data, a data processor 13 that receives a read signal from the pickup unit 11 to restore to a necessary signal value or modulation to convert a signal to be recorded into a signal to be written to the optical disk, a servo unit 14 that correctly reads a signal from the optical disk or that controls the capture unit 11 to correctly record a signal on the optical disk, a memory 15 that temporarily stores data and various types of information, including management information, and a microcomputer 16 responsible for controlling the elements described above within the read / write unit 10.

In addition to the read / write apparatuses, a display device 30 can be provided that shows a signal read through the read / write unit 10 or that provides an end user with information through the control unit 20.

Figure 8 and Figure 9 are flow charts of an optical disk read / write method applicable to the present invention, respectively. Figure 8 preferably refers to the confirmation of the presence or non-presence of writing compatibility, while Figure 9 refers to the confirmation of the presence or non-presence of writing compatibility after the completion of the writing. Confirmation of the presence or non-presence of reading compatibility.

With reference to Figure 8, once an optical disk is loaded into the read / write apparatus, all management information within the disk is read to be temporarily stored in the memory 15 of the read / write unit 10. And the management information is used for reading / writing the optical disk. Specifically, the management information stored in memory 15 includes write / read control information of the present invention. For example, read / write control information is provided as disk information (ID). Next, microcomputer 16 determines a presence or non-presence of read / write compatibility as follows. Specifically, the read / write disk control information read may be information having various names, as explained in the first to third embodiments of the present invention. From the various types of information, it can be decided whether the loaded disc is recordable or not (S11).

Specifically, in step S11, it is checked whether or not the recordable case is in "compatible bridge state" 8

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(S30), as well as the write compatibility decision (S20).

Therefore, if in step S11 it is decided that the optical disc is not recordable, the read / write device prohibits additional recordings (S40). If this is the case in which the reading is possible, according to the reading compatibility information (reading compatibility), the reading is carried out only on the corresponding disk.

And if in step S11 it is decided that the disc is the recordable optical disc and that it is not in the "compatible bridge" state, it corresponds to the case that allows a normal recording. In this way, the reading / writing apparatus can perform the recording with reference to the writing strategy information (writing strategy, writing strategy parameters, etc.) within the disc information (ID) (S80).

In addition, if in step S11 it is decided that the disk is the recordable optical disk and that it is in the "compatible bridge" state, the reading / writing device confirms, based on the reading compatibility information (reading compatible ) whether or not it is in a reading compatible state (S50). In the case of reading compatibility, a write condition is decided for each speed within the disk information (ID) to decide again the possibility of writing compatibility at the corresponding speed (S60, S70).

Depending on the result of step S70, if it is decided that writing compatibility is possible, the reading / writing apparatus performs normal writing. If it is decided that write compatibility is impossible (S40), the read / write device prohibits access to data for writing, thus avoiding system errors that may be generated due to a disk error or An attempt at abnormal writing.

With reference to Figure 9, once an optical disk is loaded in the read / write apparatus, all management information within the disk is read to be temporarily stored in the memory 15 of the read / write unit 10. And the management information is used for reading / writing the optical disk (S110). Specifically, the management information stored in memory 15 includes the read / write control information of the present invention. Specifically, the read / write control information is provided as disk information (ID). Next, the microcomputer determines a presence or non-presence of read / write compatibility as follows.

First of all, it is checked whether the reading of the corresponding disc is possible from the "reading compatible information (reading compatibility)" between the read control information (S120). If reading is impossible, access to the data area on the loaded disc is prohibited and writing is also prohibited (S121).

If reading compatibility is possible in step S120, it is checked whether the writing of the corresponding disk is possible from the "write compatible information (write compatibility)" between the read control information (S130).

Specifically, in step S130, it should be decided whether the case compatible with the writing is in the "compatible bridge" state (S132), if necessary, also if the writing is compatible or not (S131).

Therefore, if in step S31 it is decided that the optical disk is not compatible with writing, the reading / writing device prohibits additional writing and only allows reading (S140).

If in step S131 it is decided that the optical disk is compatible with writing, and if in step S132 it is decided that the case compatible with writing is not in the “compatible bridge” state, the read / write device determines that performing normal writing is normally compatible with writing with reference to the writing strategy information (for example, writing strategy, writing strategy parameters, etc.), etc., within the disk information (ID ) (S170).

If in step S131 it is decided that the optical disk is compatible with writing and if in step S132 it is decided that the case compatible with writing is in the “compatible bridge” state, the read / write device checks a condition of write for each speed within the disk information (ID) (S150) and decide again if compatibility with writing at the corresponding speed is possible or not (S160).

According to the result of step S160, if it has been determined that writing compatibility is possible, the reading / writing apparatus performs normal writing with reference to the writing strategy information within the corresponding ID (S170) . If it is decided that writing compatibility is impossible, the read / write device prohibits writing to the disk, but allows only reading (S140).

Therefore, the determination by the reading / writing apparatus of the possibility of 9 is facilitated

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writing and / or reading of the corresponding disc from the read / write control information of the loaded disc, thus preventing system errors that may be generated as a result of an abnormal write / read attempt.

5 And if you receive from the microcomputer 16 a notification indicating that the normal writing and / or reading of the loaded disc is not possible, preferably, the control unit 20 notifies a warning message, indicating that the writing and / or reading is impossible to a user through the display device 30, if necessary.

Industrial applicability

It will be apparent to persons with ordinary knowledge in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, it is intended that the present invention include the modifications and variations of this invention as long as they are within the scope of the appended claims and their equivalents.

Claims (15)

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one.

 An apparatus for reading / recording data from / on a recording medium, the apparatus comprising:

a capture unit (11) configured to read or record data from or on the recording medium; and a controller (16) operatively coupled to the capture unit (11), configured to read version information of the recording medium from the recording medium, the version information including a first compatibility version information and a second compatibility version information usable to determine an access possibility to read / write the data from / on the recording medium; the controller (16) configured to determine the possibility of access to read / write the data based on the first compatibility version information or the second compatibility version information, the possibility of access to read the data determined on the basis to the first compatibility version information, and being the possibility of access to record the data determined based on the second compatibility version information if access to read the data is possible based on the first compatibility version information, wherein the access to record the data is determined to be impossible if the access to read the data is impossible based on the first compatibility version information, wherein the first compatibility version information is incremented sequentially whenever a specification of the recording medium is changed to a range that has no read compatibility, the sec A compatibility version information is incremented sequentially whenever a specification of the recording medium is changed to a predetermined range that has no write compatibility while maintaining read compatibility.

2.

The apparatus of claim 1, wherein the controller is further configured to control the pickup unit to read the recording speed information indicating a recording speed and write strategy parameters for the speed or more recording speeds , and the controller is configured to control the capture unit to record the data at a specific recording speed between the speed or more recording speeds using the corresponding write strategy parameters.

3.

 The apparatus of claim 1 or claim 2, wherein the recording medium includes one of a rewritable recording medium and a single writing recording medium.

Four.

The apparatus of any one of claims 1 to 3, wherein the controller is further configured to control the pickup unit to read the size information indicating a size of the recording medium.

5.

 The apparatus of claim 4, wherein the controller is configured to control the pickup unit to read the size information, the first compatibility version information and the second compatibility version information from a one-byte position.

6.

The apparatus of claim 5, wherein the size information, the first compatibility version information and the second compatibility version information are represented by 2 bytes, 2 bytes and 4 bytes within the one-byte information, respectively .

7.

 The apparatus of any one of claims 1 to 6, wherein the version information, the recording speed information and the writing strategy parameters are recorded and the control information, the planned control information being for respective speeds and recording layers.

8.

The apparatus of claim 7, wherein a plurality of control information is arranged in a sequential order, and the control information includes sequential information indicating an arranged order of a corresponding control information; and in which the controller is further configured to control the pickup unit to read the sequential information.

9.

 A method for reading / writing data from or on a recording medium, the method comprising:

read the version information of the recording medium from the recording medium, the version information including the first compatibility version information and the second usable compatibility version information to determine an access possibility to read / write the data ; determine whether or not access to read / write data is possible based on the first information of 11 5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 compatibility version or in the second compatibility version information, being the possibility of access to read the data determined based on the first compatibility version information, and the possibility of access to record the data determined based on the second compatibility version information if access to read data is possible based on the first compatibility version information, where access to record data is determined to be impossible if access to read data is impossible based on the first compatibility version information, wherein the first compatibility version information is incremented sequentially whenever a specification of the recording medium is changed to a range that has no read compatibility, the second compatibility version information is increased sequentially whenever a specification of the recording medium is It changes to a predetermined range that has no write compatibility while maintaining read compatibility.

10.

 The method of claim 9, further comprising:

read the recording speed information indicating a recording speed and write strategy parameters for the speed or more recording speeds; and record the data at a specific recording speed between the speed or more recording speeds using the corresponding writing strategy parameters.

eleven.

 The method of claim 9 or claim 10, further comprising:

read the size information indicating a size of the recording medium, wherein the size information, the first compatibility version information and the second compatibility version information are read from the same byte information, and the size information , the first compatibility version information and the second compatibility version information are represented by 2 bytes, 2 bytes and 4 bytes within the one-byte information, respectively.

12.

 A recording measurement comprising:

a storage version information of the management area of the recording medium, the version information including the first compatibility version information and the second usable compatibility version information to determine an access possibility to read / write the data, the first compatibility version information is incremented sequentially whenever a specification of the recording medium is changed to a range that has no read compatibility, the second compatibility version information is sequentially increased whenever a specification of the medium of Recording is changed to a predetermined range that has no write compatibility while maintaining read compatibility, where the first compatibility version information is adjusted to be used to determine if or not the access to read the data is possible based on the first compatibility version information, and access to record the data is determined to be impossible if access to read the data is impossible based on the first version information of compatibility, the second compatibility version information is set to be used to determine whether or not access to record the data is possible based on the second compatibility version information if access to read the data is possible based on The first compatibility version information.

13.

The recording medium of claim 12, wherein the management zone also stores recording speed information indicating a recording speed and write strategy parameters for the speed or more recording speeds.

14.

The recording medium of claim 12 or claim 13, wherein the management zone also stores size information indicating a size of the recording medium, wherein the size information, the first compatibility version information and The second compatibility version information is represented by 2 bytes, 2 bytes and 4 bytes within the one-byte information, respectively.

fifteen.

The recording medium of any one of claims 12 to 14, wherein the management zone is a prerecorded zone.

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