WO2009069441A1 - 光情報記録媒体及び光情報記録媒体への情報記録方法並びに光情報記録装置 - Google Patents
光情報記録媒体及び光情報記録媒体への情報記録方法並びに光情報記録装置 Download PDFInfo
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- WO2009069441A1 WO2009069441A1 PCT/JP2008/070148 JP2008070148W WO2009069441A1 WO 2009069441 A1 WO2009069441 A1 WO 2009069441A1 JP 2008070148 W JP2008070148 W JP 2008070148W WO 2009069441 A1 WO2009069441 A1 WO 2009069441A1
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- WO
- WIPO (PCT)
- Prior art keywords
- recording
- information
- area
- optical information
- user data
- Prior art date
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Classifications
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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
- G11B7/0045—Recording
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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
- G11B20/00166—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
- G11B20/00173—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 wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
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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
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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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
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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
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/218—Write-once 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
Definitions
- the present invention relates to an optical information recording medium such as a recordable DVD (DVD ⁇ R), a recordable HD DVD (HD DVD-R), and a recordable Blu-ray Disc (BD-R), and information to such an optical information recording medium.
- the present invention relates to a recording method, and particularly relates to an optical information recording medium capable of copyright protection and its recording method. Background art
- Optical information recording media such as DVD SAT R, HD DVD-R, and BD—R have become widespread because they can record and reproduce large amounts of digital data at a relatively low cost.
- DVD SAT R, HD DVD-R, and BD—R have become widespread because they can record and reproduce large amounts of digital data at a relatively low cost.
- illegal copies such as music CDs and videos are likely to be put on the market.
- video and music have been distributed over the Internet, and a means for protecting copyright has become necessary.
- various means such as the means disclosed in Japanese Laid-Open Patent Publication No. 2002-157740 and the means disclosed in Japanese Laid-Open Patent Publication No. 2002-1 10062 are proposed by various companies. Has been. These means protect the copyright by writing encryption key data or data for preventing duplication into a part of the recording area.
- Patent Document 1 JP 2002-1 57740
- Patent Document 2 JP 2001-1 1 0062 A DISCLOSURE OF THE INVENTION
- a certification system may be established to stabilize the quality of the disc, but it is operated unrelated to the copyright management system, even if the disc is not certified. It is technically possible to record user data that requires rights protection.
- the present invention as exemplified by a copyright protection system, performs user data management and performs recording in consideration of the quality of an optical information recording medium, and appropriately manages user data. It is an object of the present invention to provide an optical information recording medium and a system thereof.
- a user data area in which user data can be recorded by a user and information necessary for controlling the recording signal when data is recorded in the user data area are provided.
- the management area determines a format to be recorded in the user data area, and the format is determined according to the determination result.
- the recording format control area having information for causing the optical information recording apparatus to perform control by converting to a predetermined signal system and recording, and the recording condition of the laser beam when recording in the user data area
- a recording condition management area comprising the above information and whether the optical information recording medium has been authenticated by a third party.
- the propose optical information recording medium comprising an authentication identification area provided with information for causing the optical information recording apparatus an operation of determining.
- the “user data area” refers to an area in which information to be recorded by the user, such as music data, video data, and other files, is recorded.
- the “management area” refers to a recording area other than the user data area, and includes a lead-in area, a lead-out area, a recording management area on the inner side of the lead-in area, and a wobble and a land pit.
- These areas are assigned to any of the management areas.
- the recording condition management area and the authentication identification area may be assigned to the same area.
- An authentication identification area may be provided in the recording condition management area.
- the present invention proposes an optical information recording medium in which the authentication identification area can include information indicating a plurality of types of authentication, in addition to the first solution.
- the second solution copyright protection is possible by simultaneously providing information in different formats and writing a plurality of information with different authentications each time.
- a third solving means in addition to the first solving means, in addition to the first solving means, information provided in the authentication identification area is determined only by a predetermined software I according to a result determined in the authentication identification area.
- a predetermined software I a predetermined software I according to a result determined in the authentication identification area.
- the information provided in the recording condition management area is information indicating a manufacturer and / or information indicating a recording strategy.
- An optical information recording medium is proposed. According to the fourth solution, the recording quality of the optical information recording medium can be improved while managing user data.
- a fifth solving means in addition to the first solving means, information for causing the operation in the recording format management area and control in the recording condition management area are performed. And an optical information recording medium in which the information for making the determination in the authentication identification area is provided in different formats. Examples of the format here include recording marks (pit rows) by laser light, barbed codes as well as landable pits. Information in the recording format management area and information in the recording condition management area By writing the information in a different format, even if the entire data written in the recording area is copied, it is possible to prevent the entire copyright protection key from being copied. In this case, it is preferable that the information in the recording format management area is provided by a wobble or a land rip.
- the conversion to a predetermined signal system managed in the recording format management area is converted to a signal system for copyright protection.
- An optical information recording medium is proposed. According to the sixth solution described above, since the format of the optical information recording medium ⁇ is the same, even if the data recorded in the user data area is copied to another optical information recording medium, the data It is possible to disable reading.
- FIG. 1 is a schematic diagram showing the structure of D V D—R.
- FIG. 2 is a diagram schematically showing a guide groove of D V D—R.
- Fig. 3 is a diagram schematically showing the format of a recording area.
- FIG. 4 is a flowchart showing the recording method of the present invention.
- An optical information recording medium includes a disc-shaped translucent substrate 1 51, a spiral guide groove 1 52 formed on one surface of the translucent substrate 1 51, and the guide groove 1
- the recording layer 15 3 formed on the surface on which the 52 is formed, the light reflecting layer 1 54 formed on the recording layer 1 53, and the adhesive layer on the light reflecting layer 1 54 And a dummy substrate 1 56 bonded through 1 55.
- the translucent substrate 151 is a disc-shaped substrate having a diameter of 8 cm or 12 cm and a thickness of 0.6 mm. As shown in FIG. 2, a spiral guide groove 1 52 having a wobble is formed on one surface of the translucent substrate 1 51, and a land LN is provided between the adjacent guide grooves 1 52. . Guide grooves 1 52 and Land LN are lined up with a track pitch in the range of 0.71 m to 0.77 m. Further, as shown in FIG. 2, the guide groove 1502 meanders with a wobble period WS and a double width a. The frequency of the guide groove 1 52 is determined by the wobble period WS.
- This wobble period W S is set so that the frequency of the wobble (hereinafter referred to as the wobble frequency) becomes 140,6 kHz in normal DVD-R.
- the wobble amplitude a is in the range of 20 nm to 35 nm for DVD-R.
- land blur pits LPP are formed on the land LN.
- a recording area is formed by the recording layer 1 53 formed on the guide groove 1 52 and the light reflecting layer 1 54 formed on the recording layer 1 53.
- information is recorded by forming pits in the recording layer 153 with laser light.
- This recording area has the format shown in Fig. 3. That is, it is divided into a user data area sandwiched between the inner lead-in and outer lead-out, and a non-user area including lead-in and lead-out. Music data, video data, etc. are recorded in the user data area.
- the management area includes record information management areas such as PCA (Power Calibration Area) and RMA (Recording Management Area), which are located on the inner periphery of the lead-in.
- the management area of the optical disk 1 5 0 0 includes a recording format management area 1 6 0 provided with information for determining the format of the optical disk 1 5 0, and recording conditions of the optical disk 1 5 0. Recording condition management area 1 6 1 provided with information to be controlled and authentication identification area 1 6 provided with information for discriminating whether or not the optical disc 1 5 0 has been authenticated by a third party 2 and are provided. Each area is described below.
- the recording format management area 160 is an area having preformat information such as position information such as an address. Such a region is allocated by, for example, a wobble of the guide groove 15 2 in the lead-in or a land prep L P P.
- the wobble of the guide groove 1 5 2 is for forming a reference signal for controlling the spindle motor for rotating the disk.
- the land blur pit L P P is for detecting address information for recording and other disc information. Therefore, the signal specified based on the wobble of the guide groove 15 2 and the land replica L P P can be read into the recording apparatus.
- the wobbles and land pits LPP of the guide groove 15 2 are designed to be engraved in the substrate 15 1, so even if the entire data written in the recording area is duplicated, the wobble of the guide groove 1 52 Bull and Land Brepping LPP are not replicated.
- the following copyright protection method can be implemented.
- a copyright protection method there is a method of enabling data recording only with dedicated software or a recording device incorporating the dedicated software. This is a method that allows a general-purpose recording device to recognize it as a recordable optical disc, but allows it to be recognized as a recordable optical disc by a recording device incorporating dedicated software or dedicated software.
- Dedicated software A method to enable data recording only with!: Or the recording device incorporating the dedicated software I is to change the wobble frequency by changing the wobble period WS of the guide groove 15 2, for example. There is a way.
- the wobble period WS is set so that the wobble frequency is 140.6 kHz at the standard linear velocity.
- a general-purpose recording device recognizes this wobble frequency optical disc as a recordable optical disc. However, if the wobble frequency is changed, the general-purpose recording device will not recognize it as a recordable optical disc. This By making it possible to recognize the dedicated recording device as an optical disc that can be recorded at the changed wobble frequency, data recording can be performed only with the dedicated software or the recording device incorporating the dedicated software. be able to.
- An example of the recording condition management area 1 61 is a manufacturer ID (M ID).
- the MIDI is recorded in a pre-write area (not shown) provided in the lead-in of the recording area of the optical disc, or in a land rip.
- This M ID indicates where the optical disc manufacturer is.
- the recording conditions of the optical disk such as laser light output and pulses are optimized by the recording conditions registered in advance based on M ID or the evaluation criteria set based on M ID.
- the recording conditions vary in quality depending on the optical conditions such as the physical properties and refractive index of the dye used in the recording layer. If the optical disc is a genuine product, the recording quality will be good because the MID matches the optimum recording conditions of the optical disc.
- MI ID can be information indicating the quality of the optical disc, and therefore information indicating the quality can be obtained by reading a signal specified by MI ID.
- the recording conditions corresponding to the MIDI that is, the recording strategy can also be information indicating the quality. For example, a lot number may be used together with M ID as information indicating quality. Since one lot number is assigned to each lot of optical disc, the disc itself can be specified. It is better to use M ID and lot number together.
- the recording format management area 160 of the optical disc 150 and the recording condition management area “! 6 1 of the optical disc 150 are preferably provided with information in different formats. If it is in a format that is difficult to copy, such as wobble, land pit pit, and barcode, even if the entire data in the recording area of the pit row is copied, the copyright protection key must not be copied. Can do.
- the authentication identification area 1 6 2 is an area provided with information for identifying authentication issued from a distribution source of data to be recorded. Information identifying such specific authentication is recorded in advance at the time of disc manufacture. Data is written by a method such as reading from the server of the distribution source through a communication line such as the Internet and writing it in the relevant area of the disk, or a method of reading and writing from an external storage medium such as a CD-ROM issued by the distribution source.
- a plurality of types of information for identifying this specific authentication may be written. For example, information written in advance by a wobble or land pit, information read from the outside, or information created based on information written in advance may be written at the same time. In addition, a plurality of pieces of information may be written as a result of writing information indicating that a different authentication is received each time the information recorded in the user data area is reproduced. In addition, the information for identifying the specific authentication may be written in the same area as the recording condition management area 1 6 "1 or in the recording condition management area 1 61. In this case, the information in the recording condition management area Information for identifying specific authentication may be used together, or one of a plurality of pieces of information for identifying specific authentication may be used as information for controlling the recording condition of the laser beam when recording.
- FIG. 4 is a flowchart showing an example of the information recording method of the present invention.
- the information recording method of the present invention comprises the first step of determining whether or not the recording format of the optical disc 1 5 0 is provided by reading the information provided in the recording region into the recording device, and the recording condition management region of the optical disc 1 5 0 "!
- Second step to read the quality identification information provided in 1 into the recording device to determine whether it is eligible, and the specific authentication provided in the authentication identification area 1 6 2 of the optical disc 1 5 0
- a third step for determining whether the data is qualified by reading the identification information into the recording device, and a fourth step for converting the user data signal system, that is, for encrypting the user data if it is determined to be eligible in the third step
- Even recording apparatus of the present invention to operate on the basis of this flowchart.
- the first step is a step of reading a signal for identifying the format of the optical disk 150 from the recording format management area 160. Proceed to the second step if the information read matches what was certified. If the information read does not match the certified information, proceed to
- the second step is a step of reading information for identifying the quality of the optical disc 15 0 from the recording condition management area 16 1. Scan the recording condition management area 1 6 1 and load it into the recording device. If the read information matches the certified one, go to the third step. If the information read does not match the certified one, go to step 6.
- the third step is a step of reading information for identifying a specific authentication from the authentication identification area 1 62. If information identifying specific authentication is recorded in advance at the time of disc manufacture, the authentication identification area 16 2 is scanned and read into the recording device. Also, when reading from outside, read via the Internet or external storage medium. If the read information matches the certified one, go to the fourth step. If the information read does not match the certified information, go to step 6.
- the fourth step is a step of converting the user data signal system, that is, encrypting the user data.
- Signal format conversion that is, encryption
- two or more kinds of symbols may be combined and encryption may be performed based on the combination of the symbols.
- at least one of the symbols to be combined is preferably a symbol other than that recorded by a pit row formed by laser light, such as a wobble, a land pit or a bar code.
- the fifth step is a step of recording the user data converted in the signal system in the user data area of the optical disc.
- the user data recorded here is authenticated and cannot be read even if copied to another optical disk. In this way, an optical disc having user data with copyright protection is obtained.
- An optical disc on which data has been recorded through the above steps can be played back by a dedicated playback device or a playback device that can incorporate dedicated software for decoding an encryption key.
- the recording method of the present invention may be combined with a C PRM (content rotation for recordable media) that is already widely used as a copyright management method.
- the means proposed in the present invention is not limited to the purpose of copyright protection, but can be applied to other data management.
- the DVD-R has been described as an example.
- the present invention is not limited to this, and can be applied to a write-once optical information recording medium such as a DVD + R, an HD DVD-R, or a BD-R.
- the present invention can be applied to a rewritable optical information recording medium.
- the information for identifying the format of the optical information recording medium the information for identifying the quality of the optical information recording medium, or the information for identifying the specific authentication, in addition to the wobble or the land replica
- the pit row by laser light is written by the bar code
- they can be combined as appropriate.
- the order of identification and the like can be changed as appropriate as long as each step is included, and further encrypted information may be obtained by combining the steps.
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US12/744,763 US8413258B2 (en) | 2007-11-26 | 2008-10-29 | Optical information recording medium, information recording method for optical information recording medium and optical information recording device |
EP08855643.6A EP2228795A4 (en) | 2007-11-26 | 2008-10-29 | OPTICAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD FOR OPTICAL INFORMATION RECORDING MEDIUM, AND OPTICAL INFORMATION RECORDING DEVICE |
CN2008801178606A CN101884068A (zh) | 2007-11-26 | 2008-10-29 | 光信息记录媒体、向光信息记录媒体的信息记录方法以及光信息记录装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007-305133 | 2007-11-26 | ||
JP2007305133A JP2009129520A (ja) | 2007-11-26 | 2007-11-26 | 光情報記録媒体及び光情報記録媒体への情報記録方法並びに光情報記録装置 |
Publications (1)
Publication Number | Publication Date |
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WO2009069441A1 true WO2009069441A1 (ja) | 2009-06-04 |
Family
ID=40678343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2008/070148 WO2009069441A1 (ja) | 2007-11-26 | 2008-10-29 | 光情報記録媒体及び光情報記録媒体への情報記録方法並びに光情報記録装置 |
Country Status (6)
Country | Link |
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US (1) | US8413258B2 (ja) |
EP (1) | EP2228795A4 (ja) |
JP (1) | JP2009129520A (ja) |
CN (1) | CN101884068A (ja) |
TW (1) | TWI397908B (ja) |
WO (1) | WO2009069441A1 (ja) |
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KR20060125465A (ko) * | 2005-06-02 | 2006-12-06 | 엘지전자 주식회사 | 기록매체, 데이터 재생방법 및 재생장치와 데이터 저장방법및 저장장치 |
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2007
- 2007-11-26 JP JP2007305133A patent/JP2009129520A/ja not_active Ceased
-
2008
- 2008-10-28 TW TW097141440A patent/TWI397908B/zh not_active IP Right Cessation
- 2008-10-29 CN CN2008801178606A patent/CN101884068A/zh active Pending
- 2008-10-29 EP EP08855643.6A patent/EP2228795A4/en not_active Withdrawn
- 2008-10-29 WO PCT/JP2008/070148 patent/WO2009069441A1/ja active Application Filing
- 2008-10-29 US US12/744,763 patent/US8413258B2/en not_active Expired - Fee Related
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JP2001110062A (ja) | 1995-10-09 | 2001-04-20 | Matsushita Electric Ind Co Ltd | 光ディスク、及び光ディスク再生装置 |
JP2002157740A (ja) | 2000-11-21 | 2002-05-31 | Matsushita Electric Ind Co Ltd | 光ディスク、光ディスク製造装置及び光ディスク記録再生装置 |
JP2002279640A (ja) * | 2001-03-21 | 2002-09-27 | Ricoh Co Ltd | ウォブル検出回路とその装置 |
JP2004362631A (ja) * | 2003-06-02 | 2004-12-24 | Ricoh Co Ltd | 情報記録装置、情報記録装置制御ソフトウエア、情報記録装置制御装置、記録媒体及び情報記録方法 |
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Title |
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Also Published As
Publication number | Publication date |
---|---|
TW200935413A (en) | 2009-08-16 |
TWI397908B (zh) | 2013-06-01 |
JP2009129520A (ja) | 2009-06-11 |
US20100302924A1 (en) | 2010-12-02 |
EP2228795A1 (en) | 2010-09-15 |
US8413258B2 (en) | 2013-04-02 |
CN101884068A (zh) | 2010-11-10 |
EP2228795A4 (en) | 2014-06-11 |
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