EP1597730A1 - Recording medium, apparatus for forming the recording medium, and apparatus and method for reproducing the recording medium - Google Patents
Recording medium, apparatus for forming the recording medium, and apparatus and method for reproducing the recording mediumInfo
- Publication number
- EP1597730A1 EP1597730A1 EP04712781A EP04712781A EP1597730A1 EP 1597730 A1 EP1597730 A1 EP 1597730A1 EP 04712781 A EP04712781 A EP 04712781A EP 04712781 A EP04712781 A EP 04712781A EP 1597730 A1 EP1597730 A1 EP 1597730A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording medium
- copy protection
- set forth
- information
- related information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
- G11B20/00181—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00297—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD
- G11B20/00304—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD the key being stored in the lead-in area [LIA]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
- G11B20/00601—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein properties of tracks are altered, e.g., by changing the wobble pattern or the track pitch, or by adding interruptions or eccentricity
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
- G11B20/00688—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
- G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1229—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc lead-in area
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1278—Physical format specifications of the record carrier, e.g. compliance with a specific standard, recording density, number of layers, start of data zone or lead-out
- G11B2020/1279—Permanent information and control data stored in the PIC zone of a Blu-Ray disc
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
Definitions
- the present invention relates to a recording medium, an apparatus for forming the recording medium, and an apparatus and method for reproducing the recording medium, and more particularly to a high-density optical disc, such as a BD-ROM
- the BD-RE has, as shown in Fig. 1, a clamping area, transition area, burst cutting area (BCA) and lead-in area defined sequentially at the inner periphery thereof, and a data area and lead-out area defined respectively at the intermediate portion and outer periphery thereof .
- BCA burst cutting area
- the lead-in area is partitioned into a first protection zone Protection zone 1, a PIC (Permanent Information & Control data) zone, a second protection zone Protection zone 2, an information 2 zone Info 2, an optimum power control (OPC) zone, etc.
- first protection zone and PIC zone are pre-recorded areas where data is pre-recorded in advance
- the remaining zones of the lead-in area, the data area and the lead-out area are rewritable areas where new data is rewritten.
- High frequency modulated (HFM) grooves are formed in the PIC zone, in which main information of the disc to be permanently preserved is stored. These HFM grooves are modulated by a bi-phase modulation method to store disc information (Dl) , as shown in Fig.
- HFM Grooves is modulated in the radial direction with a rather high bandwidth signal, to create a data channel for replicated information with sufficient capacity and data rate.
- encoding data into a wobbled groove can be performed by the bi-phase modulation.
- a bit with value 0 may be represented by a transition at the start of the bit cell and a bit with value 1 may be represented by a transition at the start and in the middle of the bit cell.
- the modulated bits may be recorded on the disc by a deviation of the groove from its average centerline as indicated in Fig. 2.
- the length of each bit cell may be 36T, where T corresponds to the length of a channel bit in the rewritable data areas .
- the new read-only high-density optical disc may be, for example, a BD-ROM, which has, as shown in Fig. 3, an inner area, clamping area, transition area, information area and rim area.
- the information area includes a data zone where main data, such as an A/V stream, is recorded while being encrypted by CPI (Copy Protection-related Information) for illegal copy protection.
- the information area further includes a PIC zone for recording the CPI and Dl . Therefore, an optical disc device detects the CPI recorded in the PIC zone in initial servo operation, and then reproduces the main data encrypted and recorded in the data zone while decrypting it using the detected CPI.
- the present invention has been made in view of the above problem, and it is an object of the present invention to provide an optical disc to which a contents protection system making it hard to illegally copy the disc is applied.
- the above and other objects can be accomplished by the provision of a recording medium wherein copy protection-related information and identification information indicative of recording or non-recording of the copy protection-related information are recorded in a specific area as a wobbled pre-pit type.
- an apparatus for forming a recording medium comprising: a copy protection controller for separating control data and main data from a file inputted thereto and generating copy control data .
- an apparatus for reproducing a recording medium comprising: a ROM-mark decoder for decoding copy protection-related information and identification information indicative of recording or non-recording of the copy protection-related information read from a specific area of said recording medium; key detector acquiring a decryption key for decryption of main data from the decoded copy protection-related information; decryption unit decrypting the main data using said decryption key; and decoding unit decoding the decrypted main data .
- a method for reproducing a recording medium comprising the steps of: a) confirming copy protection-related information and identification information indicative of recording or non-recording of the copy protection-related information from a specific area of said recording medium; and b) judging by the confirmed copy protection-related information and identification information whether said recording medium has been illegally copied.
- a method for reproducing a recording medium comprising the steps of: a) detecting a plurality of contents specific information from said recording medium; and b) judging whether said recording medium has been illegally copied, by comparing the plurality of detected contents specific information.
- Fig. 1 is a view showing the structure of a BD-RE
- Fig. 2 is a view showing HFM grooves formed in a PIC zone of the BD-RE;
- Fig. 3 is a view showing the structure of a BD-ROM
- Fig. 4 is a view showing a recorded state of CPI and a CPI flag on a BD-ROM according to a first embodiment of the present invention
- Fig. 5 is a view illustrating a procedure of illegally copying the BD-ROM according to the first embodiment of the present invention
- Fig. 6 is a view illustrating the operation of a formatter which copies the BD-ROM according to the first embodiment of the present invention
- Fig. 7 is a block diagram showing the configuration of an apparatus for reproducing the BD-ROM according to the first embodiment of the present invention while judging whether it is an illegally copied disc
- Fig. 8 is a view showing a recorded state of CPI, a CPI flag and contents specific information on a BD-ROM according to a second embodiment of the present invention
- Fig. 9 is a view illustrating the operation of a formatter which copies the BD-ROM according to the second embodiment of the present invention.
- Fig. 10 is a block diagram showing the configuration of an apparatus for reproducing the BD-ROM according to the second embodiment of the present invention while judging whether it is an illegally copied disc.
- Features, elements, and aspects of the invention that are referenced by the same numerals in different figures represent the same, equivalent, or similar features, elements, or aspects in accordance with one or more embodiments.
- a recording medium for example, a BD-ROM, according to the present invention has an inner area, clamping area, transition area, information area and rim area, as stated previously with reference to Fig. 3.
- main information of the disc or disc information (Dl)
- Dl disc information
- CPI Copy Protection-related Information
- No CPI is recorded in the PIC zone in the case where the main data is recorded in the data zone while unencrypted.
- Identification information indicative of the recording or non-recording of the CPI for example, a CPI flag CPI_Flag having a size of 1 byte, is recorded in the CPI or separately in the PIC zone.
- the CPI is recorded in a bi-phased HFM groove type in the PIC zone in a similar manner to in the above-mentioned BD-RE structure, but in a wobbled pre-pit type bi-phased in the PIC zone in a different manner from in the BD-RE structure.
- the CPI flag is recordable in the wobbled pre-pit type in the PIC zone, too. Alternatively, the CPI flag may be recorded in a straight pre-pit type.
- the CPI flag, the value of the CPI flag, CPI data, and contents specific information (CSI) to be described below are secretly provided by a contents provider, while not externally known.
- the CPI flag, CPI and CSI are used to protect the disc from illegal copying and restrict reproduction of an illegally copied disc.
- the BD-ROM can be made through legal processes in two modes.
- mode 1 copy protected contents are recorded on the BD-ROM.
- mode 2 copy free contents are recorded on the BD-ROM.
- Fig. 5 illustrates a procedure of illegally copying the BD-ROM according to the first embodiment of the present invention
- Fig. 6 illustrates the operation of a formatter.
- BD-ROM copying is attempted, a BD-ROM made through the legal process (mode 1 or mode 2) is reproduced by an optical disc device 100, such as a BD-ROM recorder or player, while the reproduced data stream is illegally stored in a storage medium 200 such as an HDD of a personal computer. Then, the copying of a BD-ROM 20 is attempted through a BD-ROM formatter 300 and mastering machine 400 on the basis of a data stream stored under decryption as input thereto.
- the BD-ROM formatter 300 includes a copy protection control chip (CPCC) .
- CPCC copy protection control chip
- Inputted to the CPCC of the BD-ROM formatter 300 is a contents authoring code file provided by the contents provider, which contains control data, such as CPI and a CPI flag, and main data such as an A/V stream.
- the BD-ROM formatter 300 separates the control data and main data from the inputted contents authoring code file through the CPCC and formats the separated control data and main data such that they are suitable to a BD-ROM standard. Thereafter, the mastering machine 400 makes a mass-copyable master using the output of the BD-ROM formatter 300 inputted thereto.
- the CPCC outputs the control data in a state of being separated from the main data.
- a legal contents authoring code file containing control data such as legal CPI and a legal CPI flag, and main data is applied to the BD-ROM formatter 300.
- control data such as legal CPI and a legal CPI flag
- main data is applied to the BD-ROM formatter 300.
- the BD-ROM formatter 300 formats the legal control data and main data separated through the CPCC such that they are suitable to the BD-ROM standard, and the mastering machine 400 makes a master.
- the CPCC is provided to a licensee normally authorized by a licensor, but may be manufactured by a specific user with intent to illegally copy.
- the illegally manufactured CPCC cannot normally generate the CPI and, even if it can, the generated CPI cannot help radically differing in either format or value from the CPI configured by the licensor.
- the CPCC is illegally manufactured and used to illegally copy a disc, the disc cannot be normally reproduced.
- Fig. 7 is a block diagram showing the configuration of an optical disc device for reproducing the BD-ROM according to the first embodiment of the present invention while judging whether it is an illegally copied disc.
- the optical disc device comprises a ROM-mark decoder 50, key decryption/decoding unit 51, main data decryption unit 52 and main data decoder 53 in the form of hardware or software.
- the ROM-mark decoder 50 acts to decode CPI and a CPI flag recorded in the PIC zone of the BD-ROM, and the key decryption/decoding unit 51 acts to decrypt and decode the CPI into a decryption key value for decryption of main data and output the decryption key value to the main data decryption unit 52.
- the main data decryption unit 52 acts to decrypt an encrypted main data stream using the decryption key value, and the main data decoder 53 acts to decode the decrypted main data stream into the original data and reproduce the decoded data.
- the ROM-mark decoder 50 judges the BD-ROM to be a legally made disc and thus reproduces it continuously.
- CPI_Flag is recorded as l' in the PIC zone of the BD-ROM, but no CPI or abnormal CPI is recorded therein, the ROM-mark decoder 50 judges the BD-ROM to have been made through an illegal process and thus outputs a playback stop control signal to the main data decryption unit 52, so as to compulsorily stop the data playback operation.
- a plurality of contents specific information are recorded in a PIC zone of a lead-in zone in addition to Dl, CPI and CPI_Flag.
- the CSI 1 and the CSI 2 are separately recorded in different formats. That is, the CSI 1 is recorded, for example, in a wobbled pre-pit type and the CSI 2 is recorded in a general straight pre-pit type.
- the CSI 2 may be recorded in a zone other than the PIC zone, preferably in the lead-in zone rather than a data zone or lead-out zone.
- Fig. 9 illustrates the operation of a formatter which copies the BD-ROM according to the second embodiment of the present invention.
- Inputted to the CPCC of the BD-ROM formatter 300 is a contents authoring code file containing control data, such as CPI_Flag, CSI and CPI, and main data such as an A/V stream.
- the BD-ROM formatter 300 separates the control data and main data from the inputted contents authoring code file through the CPCC and formats the separated control data and main data such that they are suitable to the BD-ROM standard, as stated previously with reference to Fig. 6.
- the CPCC outputs the control data in a state of being separated from the main data.
- the CPCC generates the same two (for example, CSI 1 and CSI 2) or more CSI as that contained in the control data and outputs the generated CSI while the CSI 1 being included in outputted control data and the CSI 2, etc. being included in outputted main data.
- Fig. 10 is a block diagram showing the configuration of an optical disc device for reproducing the BD-ROM according to the second embodiment of the present invention while judging whether it is an illegally copied disc.
- the optical disc device comprises a ROM-mark decoder 60, CSI data decoder 61, illegal disc judgment unit 62, key decryption/decoding unit 63, main data decryption unit 64 and main data decoder 65 in the form of hardware or software.
- the ROM-mark decoder 50 decodes CPI and CPI_Flag recorded in the PIC zone of the BD-ROM.
- the decoder 50 also decodes CSI 1 of the wobbled pre-pit type.
- the CSI data decoder 61 decodes CSI 2 of the straight pre-pit type. If the values of the decoded CSI 1 and CSI 2 are equal, the illegal disc judgment unit 62 judges the BD-ROM to have been made through a legal process and thus reproduces it continuously.
- the illegal disc judgment unit 62 judges the BD-ROM to have been made through an illegal process and thus outputs a playback stop control signal to the main data decryption unit 64, so as to compulsorily stop the data playback operation.
- the present invention provides a recording medium, an apparatus for forming the recording medium, and an apparatus and method for reproducing the recording medium, wherein it is hard to illegally copy an optical disc, and it is possible to make an accurate and easy distinction between a legally made optical disc and an illegally made optical disc. Further, it is possible to effectively protect an optical disc from illegal copying and restrict reproduction of an illegally made optical disc.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44770603P | 2003-02-19 | 2003-02-19 | |
US447706P | 2003-02-19 | ||
KR1020030073800A KR101051000B1 (en) | 2003-02-19 | 2003-10-22 | High Density Optical Discs and the Illegal Copy Determination Method |
KR2003073800 | 2003-10-22 | ||
PCT/KR2004/000338 WO2004075193A1 (en) | 2003-02-19 | 2004-02-19 | Recording medium, apparatus for forming the recording medium, and apparatus and method for reproducing the recording medium |
Publications (2)
Publication Number | Publication Date |
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EP1597730A1 true EP1597730A1 (en) | 2005-11-23 |
EP1597730A4 EP1597730A4 (en) | 2011-09-07 |
Family
ID=36968225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04712781A Withdrawn EP1597730A4 (en) | 2003-02-19 | 2004-02-19 | Recording medium, apparatus for forming the recording medium, and apparatus and method for reproducing the recording medium |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1597730A4 (en) |
JP (1) | JP2006518529A (en) |
WO (1) | WO2004075193A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7746746B2 (en) * | 2004-11-16 | 2010-06-29 | Hewlett-Packard Development Company, L.P. | Optical media with control data in wobble |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0723216A2 (en) * | 1994-11-18 | 1996-07-24 | Sony Corporation | Compact disc player security system reproducing method and apparatus |
EP1158499A2 (en) * | 2000-05-17 | 2001-11-28 | Victor Company Of Japan, Ltd. | Information recording medium, and recording method and reproducing method thereof |
WO2002037493A1 (en) * | 2000-10-31 | 2002-05-10 | Sony Corporation | Apparatus and method for recording/reproducing audio data embedded with additive information |
US20020145947A1 (en) * | 2000-09-01 | 2002-10-10 | Matsushita Electric Industrial Co., Ltd. | Optical disk having wobble patterns representing control information |
WO2004066283A1 (en) * | 2003-01-23 | 2004-08-05 | Lg Electronics Inc. | Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2853724B2 (en) * | 1993-06-30 | 1999-02-03 | 日本ビクター株式会社 | Optical recording medium, its manufacturing method and its reproducing apparatus |
US5513260A (en) * | 1994-06-29 | 1996-04-30 | Macrovision Corporation | Method and apparatus for copy protection for various recording media |
JPH09305396A (en) * | 1996-05-13 | 1997-11-28 | Dainippon Printing Co Ltd | Software recording medium, information reader, and system and method for prevention against use of copy |
JPH11102572A (en) * | 1997-09-29 | 1999-04-13 | Matsushita Electric Ind Co Ltd | Recording apparatus, reproducing apparatus, recording and reproducing apparatus, data-transmitting apparatus, and recording medium |
US6587948B1 (en) * | 1998-02-13 | 2003-07-01 | Sony Corporation | Recording apparatus, recording medium, playback apparatus, recording method and playback method |
EP0984346A1 (en) * | 1998-09-02 | 2000-03-08 | Hitachi Europe Limited | Copy protection apparatus and method |
KR100365353B1 (en) * | 2000-04-11 | 2002-12-18 | 엘지전자 주식회사 | Compact disc recordable player having means of copy protection and copying method thereof |
JP2002182770A (en) * | 2000-12-18 | 2002-06-26 | Matsushita Electric Ind Co Ltd | Recording medium having normal user authentication function |
JP2002319245A (en) * | 2001-04-20 | 2002-10-31 | Sony Corp | Data recording medium, method and device for data reproduction, and method and device for data output |
-
2004
- 2004-02-19 WO PCT/KR2004/000338 patent/WO2004075193A1/en active Application Filing
- 2004-02-19 JP JP2006502712A patent/JP2006518529A/en not_active Ceased
- 2004-02-19 EP EP04712781A patent/EP1597730A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0723216A2 (en) * | 1994-11-18 | 1996-07-24 | Sony Corporation | Compact disc player security system reproducing method and apparatus |
EP1158499A2 (en) * | 2000-05-17 | 2001-11-28 | Victor Company Of Japan, Ltd. | Information recording medium, and recording method and reproducing method thereof |
US20020145947A1 (en) * | 2000-09-01 | 2002-10-10 | Matsushita Electric Industrial Co., Ltd. | Optical disk having wobble patterns representing control information |
WO2002037493A1 (en) * | 2000-10-31 | 2002-05-10 | Sony Corporation | Apparatus and method for recording/reproducing audio data embedded with additive information |
WO2004066283A1 (en) * | 2003-01-23 | 2004-08-05 | Lg Electronics Inc. | Recording medium with copy protection indicating information and apparatus and methods for forming, recording, reproducing and restricting reproduction of the recording medium |
Non-Patent Citations (1)
Title |
---|
See also references of WO2004075193A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004075193A1 (en) | 2004-09-02 |
JP2006518529A (en) | 2006-08-10 |
EP1597730A4 (en) | 2011-09-07 |
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