JP4627421B2 - Optical disc management system and optical disc management method - Google Patents

Optical disc management system and optical disc management method Download PDF

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JP4627421B2
JP4627421B2 JP2004268898A JP2004268898A JP4627421B2 JP 4627421 B2 JP4627421 B2 JP 4627421B2 JP 2004268898 A JP2004268898 A JP 2004268898A JP 2004268898 A JP2004268898 A JP 2004268898A JP 4627421 B2 JP4627421 B2 JP 4627421B2
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bca
key
optical disc
code recording
bca code
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JP2006085813A (en
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正人 大塚
英司 佐保田
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Memory Tech Corp
Hitachi Information and Telecommunication Engineering Ltd
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Hitachi Computer Peripherals Co Ltd
Memory Tech Corp
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Priority to TW094131399A priority patent/TW200623071A/en
Priority to PCT/JP2005/017218 priority patent/WO2006030932A1/en
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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]
    • 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
    • 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
    • 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
    • G11B20/00224—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 obtained from a remote server
    • 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
    • G11B20/0026—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 as a barcode
    • G11B20/00268—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 as a barcode said barcode being recorded in a burst cutting area [BCA]
    • 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
    • G11B20/00347—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 wherein the medium identifier is used as a key
    • 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
    • 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
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Storage Device Security (AREA)

Description

本発明は、光ディスクの不正製造及び不正再生を防止する光ディスク管理システム及び光ディスク管理方法に関する。 The present invention relates to an optical disc management system and an optical disk management how to prevent unauthorized production and illegal reproduction of the optical disc.

一般に光ディスクと呼ばれる記録媒体には、スタンピング技術によりデータが予め記録される再生専用ディスク（ＣＤ-ＲＯＭ、ＤＶＤ-ＲＯＭ等）、色素系記録膜の反射率を変化させることによりデータの記録を行う追記型ディスク（ＣＤ−Ｒ、ＤＶＤ−Ｒ等）、相変化記録膜の反射率を変化させることによりデータの記録を行う書換え型ディスク（ＣＤ-ＲＷ、ＤＶＤ-ＲＷ、ＤＶＤ-ＲＡＭ等）が知られている。 Recording media generally called optical discs are read-only discs (CD-ROM, DVD-ROM, etc.) on which data is recorded in advance by stamping technology, and additional recording is performed by changing the reflectance of the dye-based recording film Type discs (CD-R, DVD-R, etc.) and rewritable discs (CD-RW, DVD-RW, DVD-RAM, etc.) for recording data by changing the reflectivity of the phase change recording film are known. ing.

前記多種光ディスクの中で特にＤＶＤディスクにおいては、ディスク最内周にＢＣＡ（Ｂｕｒｓｔ Ｃｕｔｔｉｎｇ Ａｒｅａ）コードなるバーコード状のデータが記録される場合がある。このＢＣＡコードは、主に著作権保護を目的とし、ディスク製造過程又は製造後に記録される。記録方法はＤＶＤ種別によって異なり、例えば再生専用のＤＶＤ-ＲＯＭディスクの場合は高出力レーザを使用した専用装置（以下、ＢＣＡコード記録装置と呼ぶ）により、ディスクの反射膜の一部を放射線状に除去（焼き切る）ことで記録マークを形成する。また、追記型のＤＶＤ-Ｒにおいては、前記ＢＣＡコード記録装置を用い、記録膜の色素(反射率)変化によりマークを記録することが可能であり、書換え型のＤＶＤ−ＲＷ、ＤＶＤ−ＲＡＭにおいては、相変化記録膜の結晶化工程で用いられている初期化装置により、未結晶部分を放射線状に残留させることで記録マークを形成することが一般的となっている。 尚、このＢＣＡコードに関する技術が記載された文献としては、例えば下記特許文献が挙げられる。
特開平１０−２３３０１９号公報 特開２００１−７６３４５号公報 Among the various types of optical discs, particularly in the case of DVD discs, barcode-like data such as BCA (Burst Cutting Area) codes may be recorded on the innermost circumference of the disc. This BCA code is mainly recorded for the purpose of copyright protection, and is recorded in the disc manufacturing process or after manufacturing. The recording method differs depending on the DVD type. For example, in the case of a read-only DVD-ROM disc, a part of the reflective film of the disc is made radial by using a dedicated device using a high-power laser (hereinafter referred to as a BCA code recording device). The recording mark is formed by removing (burning out). In the recordable DVD-R, the BCA code recording device can be used to record a mark by changing the dye (reflectance) of the recording film. In the rewritable DVD-RW and DVD-RAM, In general, a recording mark is formed by leaving an uncrystallized portion in a radial pattern by an initialization apparatus used in a crystallization process of a phase change recording film. In addition, as a document in which the technique regarding this BCA code was described, the following patent document is mentioned, for example.
Japanese Patent Laid-Open No. 10-233019 JP 2001-76345 A

前記ＢＣＡコードが記録された光ディスクは、近年のコンピュータ技術の発展により、ある程度の技術力を持った者が容易に不正コピーを行うことができる。特に近年ではコスト削減のために海外工場にて光ディスクの製造を行うことが多々あり、この場合、仮に不正利用者が正規の光ディスク製造装置を用いて休日等に不正に光ディスクの製造を行った場合、その製造された光ディスクが不正に製造されたものなのか正規に製造された光ディスクなのかを判別することが困難であると言う不具合もあった。特に当該不正製造の問題は、例えば版権を持つライセンシーから所定数量の製造が許諾された映画情報を含むＤＶＤの場合、許諾を受けた製造工場がライセンスの範囲を超えた数量が市場に出回った場合、不正に製造されたことを立証することが困難であると言う不具合があった。 The optical disc on which the BCA code is recorded can be easily copied illegally by a person with a certain level of technical ability due to the recent development of computer technology. In recent years, optical discs are often manufactured at overseas factories in recent years in order to reduce costs. In this case, if an unauthorized user illegally manufactures an optical disc on a holiday or the like using a regular optical disc manufacturing apparatus. There is also a problem that it is difficult to determine whether the manufactured optical disk is an illegally manufactured optical disk or a properly manufactured optical disk. In particular, the problem of unauthorized manufacturing is, for example, in the case of a DVD containing movie information that has been licensed for a certain amount by a licensee with a copyright, when the licensed manufacturing plant has entered the market beyond the scope of the license. There was a problem that it was difficult to prove that the product was illegally manufactured.

本発明の目的は、前述の従来技術による不具合を除去することであり、光ディスクの不正製造及び不正再生を防止することができる、光ディスク管理システム及び光ディスク管理方法を提供することである。 An object of the present invention is to eliminate the above-mentioned problems caused by the prior art, and to provide an optical disc management system and an optical disc management method capable of preventing illegal manufacture and illegal reproduction of an optical disc.

前記目的を達成するために請求項１記載の発明は、ＢＣＡコード記録装置製造メーカのコンピュータが発行するＢＣＡコード記録装置毎の固有シリアルＩＤ（ａ）と、ライセンス管理団体のコンピュータが前記固有シリアルＩＤ（ａ）毎に発行して送信するＢＣＡ設備キー（ｂ）及び光ディスクに記録されるタイトル毎に発行して送信するメディアキー（ｃ）と、を入力とするＢＣＡコード記録装置がＢＣＡコードをＢＣＡ設備コントローラの制御によって光ディスクに記録する光ディスク管理システムであって、 前記ＢＣＡコード記録装置が、前記固有シリアルＩＤ（ａ）を記憶する内蔵メモリ機能部と、前記ライセンス管理団体のコンピュータからＢＣＡ設備キー（ｂ）を受信して記憶する外部メモリ機能部とを備え、 前記ＢＣＡ設備コントローラが、前記ライセンス管理団体のコンピュータから前記メディアキー（ｃ）を受信する機能部と、光ディスクに記録されるタイトル毎に付与されたＢＣＡデータを記憶する機能部と、前記内蔵メモリ機能部に格納した固有シリアルＩＤ（ａ）と前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可する機能部と、前記受信したメディアキー（ｃ）と前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）とに基づいて特殊暗号キー（ｅ）をＢＣＡコード記録装置製造メーカのコンピュータに生成させ、前記生成した特殊暗号キー（ｅ）を前記ＢＣＡデータに含ませて光ディスクに記録させる機能部とを備えたことを特徴とする。 In order to achieve the above object, the invention described in claim 1 includes a unique serial ID (a) for each BCA code recording device issued by a computer of a BCA code recording device manufacturer, and a computer of a license management organization that uses the unique serial ID. The BCA code recording device that receives the BCA equipment key (b) issued and transmitted every (a) and the media key (c) issued and transmitted for each title recorded on the optical disc receives the BCA code as the BCA code. An optical disc management system for recording on an optical disc under the control of an equipment controller, wherein the BCA code recording device includes a built-in memory function unit for storing the unique serial ID (a) and a BCA equipment key ( b) an external memory function unit for receiving and storing the BCA facility A controller stores in the function unit that receives the media key (c) from the computer of the license management organization, a function unit that stores BCA data assigned to each title recorded on the optical disc, and the built-in memory function unit A function unit that permits BCA code recording only when the unique serial ID (a) and the BCA equipment key (b) stored in the external memory function unit have a predetermined relationship; and the received media key (c) And a BCA equipment key (b) stored in the external memory function unit, a special encryption key (e) is generated by a computer of a BCA code recording device manufacturer, and the generated special encryption key (e) is generated by the BCA And a functional unit that is included in the data and recorded on the optical disc.

請求項２記載の発明は、前記光ディスク管理システムにおいて、前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）が、前記ＢＣＡコード記録装置が設置された工場の稼働日のみ、前記ＢＣＡコード記録を許可する機能部からのアクセスが可能に設定されていることを特徴とする。 The invention according to claim 2 is that in the optical disc management system, the BCA equipment key (b) stored in the external memory function unit records the BCA code only on the operating day of the factory where the BCA code recording device is installed. It is characterized in that it is set to be accessible from the permitted function unit.

請求項３記載の発明は、ＢＣＡコード記録装置製造メーカのコンピュータが発行するＢＣＡコード記録装置毎の固有シリアルＩＤ（ａ）と、ライセンス管理団体のコンピュータが前記固有シリアルＩＤ（ａ）毎に発行して送信するＢＣＡ設備キー（ｂ）及び光ディスクに記録されるタイトル毎に発行して送信するメディアキー（ｃ）と、を入力とするＢＣＡコード記録装置がＢＣＡコードをＢＣＡ設備コントローラの制御によって光ディスクに記録する光ディスク管理システムの管理方法であって、 前記ＢＣＡコード記録装置に、前記固有シリアルＩＤ（ａ）を記憶する内蔵メモリ機能と、前記ライセンス管理団体のコンピュータからＢＣＡ設備キー（ｂ）を受信して記憶する外部メモリ機能を実行させ、 前記ＢＣＡ設備コントローラに、前記ライセンス管理団体のコンピュータから前記メディアキー（ｃ）を受信する機能と、光ディスクに記録されるタイトル毎に付与されたＢＣＡデータを記憶する機能と、前記内蔵メモリ機能によって記憶した固有シリアルＩＤ（ａ）と前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可する機能と、前記受信したメディアキー（ｃ）と前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）とを基に特殊暗号キー（ｅ）をＢＣＡコード記録装置製造メーカのコンピュータに生成させ、前記生成した特殊暗号キー（ｅ）を前記ＢＣＡデータに含ませて光ディスクに記録させる機能とを実行させることによって、 前記ＢＣＡ設備コントローラが、前記内蔵メモリ機能によって記憶した固有シリアルＩＤ（ａ）とＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみに前記特殊暗号キーｅを含ませたＢＣＡコード記録をＢＣＡコード記録装置に許可することを特徴とする。 According to the third aspect of the invention, the unique serial ID (a) for each BCA code recording device issued by the computer of the BCA code recording device manufacturer and the computer of the license management organization issued for each unique serial ID (a). The BCA code recording device that receives the BCA equipment key (b) to be transmitted and the media key (c) to be issued and transmitted for each title recorded on the optical disk inputs the BCA code to the optical disk under the control of the BCA equipment controller. A method of managing an optical disc management system for recording, wherein the BCA code recording device receives a built-in memory function for storing the unique serial ID (a) and a BCA equipment key (b) from a computer of the license management organization. The external memory function to be stored, and the BCA equipment controller A function of receiving the media key (c) from the computer of the license management organization, a function of storing BCA data assigned to each title recorded on the optical disc, and a unique serial ID (a ) And the BCA equipment key (b) stored by the external memory function, a function that permits BCA code recording only when there is a predetermined relationship, and the received media key (c) and the external memory function Based on the BCA equipment key (b), the special encryption key (e) is generated by the computer of the BCA code recording device manufacturer, and the generated special encryption key (e) is included in the BCA data and recorded on the optical disc. By executing the function, the BCA equipment controller can control the built-in memory function. The BCA code recording apparatus is allowed to record the BCA code including the special encryption key e only when the unique serial ID (a) stored in the memory and the BCA equipment key (b) have a predetermined relationship. To do.

請求項４記載の発明は、前記光ディスク管理方法において、前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）が、前記ＢＣＡコード記録装置が設置された工場の稼働日のみ、前記ＢＣＡコード記録を許可する機能からのアクセスが可能に設定されていることを特徴とする。 Invention of claim 4, wherein in the optical disk management method, the BCA facility key stored by the external memory function (b) is, the BCA code recording apparatus only working day of the installed plant, the BCA code recording allow to function whether these access, characterized in that is set to be.

本発明は、ＢＣＡ設備コントローラが、ＢＣＡ記録装置製造メーカが装置毎に発行する固有シリアルＩＤ（ａ）と、ライセンス管理団体が前記固有シリアルＩＤ（ａ）を基に発行するＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可するために、光ディスクの不正製造を防止することができる。 The present invention, BCA equipment controller, B CA unique serial ID of the recording device manufacturer is issued per unit and (a), the license management organizations the unique serial ID BCA facility key issues based on (a) (b Since the BCA code recording is permitted only when there is a predetermined relationship, it is possible to prevent unauthorized manufacture of the optical disc.

以下、本発明の一実施形態による光ディスク管理システム及び光ディスク管理方法の一実施形態を図１を参照して詳細に説明する。 Hereinafter, an embodiment of an optical disc management system and an optical disk management how according to one embodiment of the present invention with reference to FIG. 1 will be described in detail.

本実施形態による光ディスク管理システムは、図１に示す如く、ＢＣＡコードを光ディスクに記録するＢＣＡコード記録装置３１を製造するＢＣＡ記録装置製造メーカ１０と、該メーカ１０が製造したＢＣＡコード記録装置３１を用い且つライセンス管理団体２０からの許可を得て光ディスクに対してＢＣＡコード及びタイトルに応じたデータ（音楽／映画その他データ）を記録するディスク製造メーカ３０と、映画等の光ディスク製造のライセンスを管理するライセンス管理団体２０と、前記ディスク製造メーカ３０が製造したＢＣＡコード付光ディスク６０を再生する光ディスク再生装置７０とによって構成される。この光ディスク再生装置７０は図示しない光ディスク再生装置メーカによって製造される。 As shown in FIG. 1, the optical disc management system according to the present embodiment includes a BCA recording device manufacturer 10 that manufactures a BCA code recording device 31 that records a BCA code on an optical disc, and a BCA code recording device 31 manufactured by the manufacturer 10. The disc manufacturer 30 that records data (music / movies and other data) corresponding to the BCA code and title on the optical disc with permission from the license management organization 20 and the license for the production of optical discs such as movies are managed. The license management organization 20 and an optical disk playback device 70 for playing back the BCA-coded optical disk 60 manufactured by the disk manufacturer 30. This optical disk playback device 70 is manufactured by an optical disk playback device manufacturer (not shown).

前記ＢＣＡコード記録装置製造メーカ１０は、製造したＢＣＡコード記録装置毎に固有シリアルＩＤ（ａ）を発行し、当該ＢＣＡコード記録装置の内蔵メモリ３２に登録すると共に、前記固有シリアルＩＤ（ａ）を前記ライセンス管理団体２０に報告する様に構成され、ライセンス管理団体２０は、前記ＢＣＡコード記録装置製造メーカから報告された固有シリアルＩＤ（ａ）を基にしたＢＣＡ設備キー（ｂ）の発行機能２１と、タイトル毎にメディアキー（ｃ）の発行機能２２と、前記ＢＣＡ設備キー（ｂ）とメディアキー（ｃ）を基にした認証キー（ｄ）の発行機能２３とを備える。 The BCA code recording device manufacturer 10 issues a unique serial ID (a) for each manufactured BCA code recording device, registers it in the built-in memory 32 of the BCA code recording device, and stores the unique serial ID (a). The license management organization 20 is configured to report to the license management organization 20, and the license management organization 20 issues a BCA facility key (b) issuing function 21 based on the unique serial ID (a) reported from the BCA code recording device manufacturer. And a media key (c) issuing function 22 for each title, and an authentication key (d) issuing function 23 based on the BCA equipment key (b) and the media key (c).

前記光ディスク製造メーカ３０は、前記ＢＣＡコード記録装置製造メーカ１０が発行するＢＣＡコード記録装置毎の固有シリアルＩＤ（ａ）を格納する内蔵メモリを含むＢＣＡコード記録装置３１と、前記固有シリアルＩＤ（ａ）を基にライセンス管理団体２０が発行するＢＣＡ設備キー（ｂ）を通信網を介して受信することができる外部メモリ３７と、ライセンス管理団体２０がタイトル毎に発行するメディアキー（ｃ）を通信網を介して受信し且つタイトル毎に付与されたＢＣＡデータを格納するＢＣＡ設備コントローラ３８とを含む。 The optical disc manufacturer 30 includes a BCA code recording device 31 including a built-in memory for storing a unique serial ID (a) for each BCA code recording device issued by the BCA code recording device manufacturer 10, and the unique serial ID (a ) And the external memory 37 that can receive the BCA equipment key (b) issued by the license management organization 20 via the communication network and the media key (c) issued by the license management organization 20 for each title. And a BCA equipment controller 38 for storing BCA data received via the network and assigned to each title.

前記ＢＣＡコード記録装置３１は、前記内蔵メモリ３２に格納した固有シリアルＩＤ（ａ）と外部メモリ３７に記憶したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可する許可機能３３と、該機能３３によりＢＣＡコード記録が許可されたとき、前記外部メモリ３７に格納したＢＣＡ設備キー（ｂ）とＢＣＡ設備コントローラ３８を介して入力したメディアキー（ｃ）とを基に特殊暗号キー（ｅ）を生成する暗号生成機能３４と、前記ＢＣＡ設備コントローラ３８に記憶したＢＣＡデータ３９に前記特殊暗号キー（ｅ）を含ませる混合機能３５と、該混合機能３５により特殊暗号キー（ｅ）を含ませたＢＣＡコードを光ディスクに記録するＢＣＡコード記録機能３６とを備える。尚、本実施形態で述べる「所定の関係」とは、例えば固有シリアルＩＤ（ａ）とＢＣＡ設備キー（ｂ）とを予め定めた演算式により演算したときの結果が一定値となる等の関係を意味する。 The BCA code recording device 31 permits BCA code recording only when the unique serial ID (a) stored in the internal memory 32 and the BCA equipment key (b) stored in the external memory 37 have a predetermined relationship. Based on the permission function 33 and the BCA code key (b) stored in the external memory 37 and the media key (c) input via the BCA equipment controller 38 when the BCA code recording is permitted by the function 33. A cipher generation function 34 for generating a special encryption key (e), a mixing function 35 for including the special encryption key (e) in the BCA data 39 stored in the BCA equipment controller 38, and a special encryption key by the mixing function 35 A BCA code recording function 36 for recording the BCA code including (e) on the optical disc. The “predetermined relationship” described in the present embodiment is a relationship in which, for example, the result obtained when the unique serial ID (a) and the BCA equipment key (b) are calculated by a predetermined calculation formula becomes a constant value. Means.

本実施形態の対象となるＢＣＡコードは、光ディスクの内周トラックに沿って複数のバーコード状のマーク（縦線のバー）が並列され、該マークの間隔によって著作権表示等のデータを構成するものであり、このＢＣＡコードを構成するマークの記録位置は例えばＤＶＤ規格により定められており、この規格はディスク半径方向及びトラック方向に対して所定のマージンが定められている。このＢＣＡコードを記録するエリアは規約により定められているが物理的に余裕があり、この余裕エリアに前記特殊暗号キー（ｅ）を含ませることは容易である。また前記特殊暗号キー（ｅ）は、複数のマークから成るＢＣＡコードを、該複数マークの光ディスク半径方向位置及び又はトラック方向位置をＢＣＡコードとして認識可能な範囲で予め決められた手順で変調させたシークレットコードとして埋め込むこともできる。即ち、ＢＣＡコードが、ＢＣＡコードとして認識可能な範囲で変形させることができる特性を利用し、マーク長変化及び変形を利用して特殊暗号キー（ｅ）をシークレットコードとしてＢＣＡコード内に埋め込むこともできる。 The BCA code that is the object of the present embodiment includes a plurality of bar-code marks (vertical bars) arranged in parallel along the inner track of the optical disc, and constitutes data such as a copyright notice by the interval between the marks. The recording position of the mark constituting this BCA code is determined by, for example, the DVD standard, and this standard defines a predetermined margin with respect to the disk radial direction and the track direction. The area where the BCA code is recorded is determined by convention, but there is a physical margin, and it is easy to include the special encryption key (e) in this margin area. In the special encryption key (e), a BCA code composed of a plurality of marks is modulated by a predetermined procedure within a range in which the optical disc radial position and / or track direction position of the plurality of marks can be recognized as a BCA code. It can also be embedded as a secret code. That is, the special encryption key (e) may be embedded in the BCA code as a secret code by utilizing the characteristic that the BCA code can be deformed within a range that can be recognized as the BCA code, and using the mark length change and deformation. it can.

前記外部メモリ３７に格納されるＢＣＡ設備キー（ｂ）は、ディスク製造メーカ３０が正規の工場稼働日のみに外部からアクセス可能に設定されているか、所定の権限のある管理者のみによってアクセス可能に設定されている。 The BCA equipment key (b) stored in the external memory 37 is set so that the disk manufacturer 30 can be accessed from the outside only on the regular factory operating day, or can be accessed only by an administrator with a predetermined authority. Is set.

前記光ディスク再生装置７０は、光ディスク６０から再生したＢＣＡコードを再生する再生機能７１と、この再生したＢＣＡコードに含まれる特殊暗号キー（ｅ）と通信回線を介してライセンス管理団体２０から受信した認証キー（ｄ）とを比較し、両キー（ｄ）及び（ｅ）が予め定められた所定の関係か否かを判定し、所定の関係の場合に光ディスク６０が正規のタイトルと認証する認証機能７２と、該認証機能７２が正規のタイトルであることを認証した場合に光ディスク６０の再生を許可する許可機能７３と、前記認証機能７２が正規のタイトルでないと認証した場合に光ディスク６０の再生を不可とする再生不可機能７４とを備える。 The optical disc playback apparatus 70 has a playback function 71 for playing back the BCA code played back from the optical disc 60, the special encryption key (e) included in the played back BCA code, and the authentication received from the license management organization 20 via the communication line. An authentication function for comparing the key (d), determining whether or not both keys (d) and (e) are in a predetermined relationship, and authenticating the optical disc 60 with a regular title in the predetermined relationship 72 , a permission function 73 that permits playback of the optical disc 60 when the authentication function 72 authenticates that it is a legitimate title, and playback of the optical disc 60 when the authentication function 72 authenticates that it is not a legitimate title. A reproduction disable function 74 for disabling it.

この様に構成された光ディスク管理システム及び光ディスク管理方法は、ＢＣＡコード記録装置３１が、ＢＣＡ記録装置製造メーカより発行され、内蔵メモリ３２に格納した固有シリアルＩＤ（ａ）と、ライセンス管理団体２０が前記固有シリアルＩＤ（ａ）を基に発行し、回線を通じて受信し、外部メモリ３７に格納したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可するために、光ディスクの不正製造を防止することができる。 Configured optical disc management system and an optical disk management method in this manner, BCA code recording apparatus 31, published by the BCA recording apparatus manufacturer, a unique serial ID (a) stored in the internal memory 32, the license management organization 20 In order to allow BCA code recording only when the BCA equipment key (b) issued based on the unique serial ID (a), received via the line, and stored in the external memory 37 has a predetermined relationship, Can be prevented from being illegally manufactured.

即ち、仮にディスク製造メーカ３０の従業員が、休日等に不正に光ディスク製造を試みたとしても、外部メモリ３７からＢＣＡ設備キー（ｂ）を読み込むことがでないため光ディスクの不正な製造を阻止することができる。また仮に管理者等の不正によって光ディスクが不正製造された場合、当該不正に製造された光ディスクのＢＣＡコードには、前記メディアキー（ｃ）とＢＣＡ設備キー（ｂ）とを基に生成された特殊暗号キー（ｅ）が含まれ、ライセンス管理団体２０等が前記特殊暗号キー（ｅ）を解読することによって、不正に光ディスクを製造したディスク製造メーカを特定することができる。 In other words, even if an employee of the disk manufacturer 30 tries to manufacture the optical disk illegally on a holiday or the like, the BCA equipment key (b) is not read from the external memory 37, so that illegal manufacture of the optical disk is prevented. Can do. Also, if an optical disc is illegally manufactured by an administrator or the like, the BCA code of the illegally manufactured optical disc includes a special key generated based on the media key (c) and the BCA equipment key (b). By including the encryption key (e) and the license management organization 20 or the like decrypting the special encryption key (e), it is possible to identify the disk manufacturer that manufactured the optical disk illegally.

更に本実施形態による光ディスク管理システム及び光ディスク管理方法は、光ディスク再生装置７０が、ライセンス管理団体２０から発行されたＢＣＡ設備キー（ｂ）とメディアキー（ｃ）とを基にした認証キー（ｄ）と、再生したＢＣＡデータに含まれ、ＢＣＡコード記録装置が前記ＢＣＡ設備キー（ｂ）とメディアキー（ｃ）とを基に生成した特殊暗号キー（ｅ）との関係が所定の関係にあるときのみに光ディスク再生を許可する様に構成したため、光ディスクの不正再生を防止することができる。 Furthermore, in the optical disc management system and optical disc management method according to the present embodiment, the optical disc playback device 70 uses the authentication key (d) based on the BCA equipment key (b) and the media key (c) issued from the license management organization 20. And a special encryption key (e) that is included in the reproduced BCA data and generated by the BCA code recording device based on the BCA equipment key (b) and the media key (c). Since the optical disk reproduction is permitted only to the optical disk, unauthorized reproduction of the optical disk can be prevented.

本発明の一実施形態による不正コピー発見システムを説明するための図。The figure for demonstrating the unauthorized copy discovery system by one Embodiment of this invention.

１０：コード記録装置製造メーカ、２０：ライセンス管理団体、３０：光ディスク製造メーカ、３１：ＢＣＡコード記録装置、３２：内蔵メモリ、３７：外部メモリ、３８：ＢＣＡ設備コントローラ、６０：ＢＣＡコード付光ディスク、７０：光ディスク再生装置。 10: Code recording device manufacturer, 20: License management organization, 30: Optical disc manufacturer, 31: BCA code recording device, 32: Built-in memory, 37: External memory, 38: BCA equipment controller, 60: Optical disc with BCA code, 70: Optical disc playback apparatus.

Claims (4)

ＢＣＡコード記録装置製造メーカのコンピュータが発行するＢＣＡコード記録装置毎の固有シリアルＩＤ（ａ）と、ライセンス管理団体のコンピュータが前記固有シリアルＩＤ（ａ）毎に発行して送信するＢＣＡ設備キー（ｂ）及び光ディスクに記録されるタイトル毎に発行して送信するメディアキー（ｃ）と、を入力とするＢＣＡコード記録装置がＢＣＡコードをＢＣＡ設備コントローラの制御によって光ディスクに記録する光ディスク管理システムであって、 前記ＢＣＡコード記録装置が、前記固有シリアルＩＤ（ａ）を記憶する内蔵メモリ機能部と、前記ライセンス管理団体のコンピュータからＢＣＡ設備キー（ｂ）を受信して記憶する外部メモリ機能部とを備え、前記ＢＣＡ設備コントローラが、前記ライセンス管理団体のコンピュータから前記メディアキー（ｃ）を受信する機能部と、光ディスクに記録されるタイトル毎に付与されたＢＣＡデータを記憶する機能部とを備え、前記ＢＣＡコード記録装置に、前記内蔵メモリ機能部に格納した固有シリアルＩＤ（ａ）と前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可する機能部と、前記受信したメディアキー（ｃ）と前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）とに基づいて特殊暗号キー（ｅ）を生成させる機能部と、前記生成した特殊暗号キー（ｅ）を前記ＢＣＡデータに含ませて光ディスクに記録させる機能部とを備えたことを特徴とする光ディスク管理システム。   A unique serial ID (a) for each BCA code recording device issued by the computer of the manufacturer of the BCA code recording device and a BCA facility key (b) issued and transmitted by the computer of the license management organization for each unique serial ID (a). ) And a media key (c) that is issued and transmitted for each title recorded on the optical disc, and a BCA code recording apparatus that records the BCA code on the optical disc under the control of the BCA equipment controller. The BCA code recording device includes a built-in memory function unit for storing the unique serial ID (a) and an external memory function unit for receiving and storing a BCA equipment key (b) from a computer of the license management organization. , The BCA equipment controller is a compilation of the license management organization. A function unit for receiving the media key (c) from the data and a function unit for storing BCA data assigned to each title recorded on the optical disc, and the BCA code recording device includes the built-in memory function unit. A functional unit that permits BCA code recording only when the unique serial ID (a) stored in the B and the BCA equipment key (b) stored in the external memory functional unit have a predetermined relationship; and the received media key ( c) a function unit for generating a special encryption key (e) based on the BCA equipment key (b) stored in the external memory function unit, and including the generated special encryption key (e) in the BCA data. An optical disc management system comprising a functional unit for recording on an optical disc. 前記外部メモリ機能部に記憶したＢＣＡ設備キー（ｂ）が、前記ＢＣＡコード記録装置が設置された工場の稼働日のみ、前記ＢＣＡコード記録を許可する機能部からのアクセスが可能に設定されている請求項１記載の光ディスク管理システム。 The BCA equipment key (b) stored in the external memory function unit is set to be accessible from the function unit permitting the BCA code recording only on the working day of the factory where the BCA code recording device is installed. The optical disk management system according to claim 1. ＢＣＡコード記録装置製造メーカのコンピュータが発行するＢＣＡコード記録装置毎の固有シリアルＩＤ（ａ）と、ライセンス管理団体のコンピュータが前記固有シリアルＩＤ（ａ）毎に発行して送信するＢＣＡ設備キー（ｂ）及び光ディスクに記録されるタイトル毎に発行して送信するメディアキー（ｃ）と、を入力とするＢＣＡコード記録装置がＢＣＡコードをＢＣＡ設備コントローラの制御によって光ディスクに記録する光ディスク管理システムの管理方法であって、 前記ＢＣＡコード記録装置に、前記固有シリアルＩＤ（ａ）を記憶する内蔵メモリ機能と、前記ライセンス管理団体のコンピュータからＢＣＡ設備キー（ｂ）を受信して記憶する外部メモリ機能を実行させ、 前記ＢＣＡ設備コントローラに、前記ライセンス管理団体のコンピュータから前記メディアキー（ｃ）を受信する機能と、光ディスクに記録されるタイトル毎に付与されたＢＣＡデータを記憶する機能とを実行させ、 前記ＢＣＡコード記録装置に、前記内蔵メモリ機能によって格納した固有シリアルＩＤ（ａ）と前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみにＢＣＡコード記録を許可する機能と、前記受信したメディアキー（ｃ）と前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）とに基づいて特殊暗号キー（ｅ）を生成させる機能と、前記生成した特殊暗号キー（ｅ）を前記ＢＣＡデータに含ませて光ディスクに記録させる機能とを実行させることによって、 前記ＢＣＡ設備コントローラが、前記内蔵メモリ機能によって記憶した固有シリアルＩＤ（ａ）とＢＣＡ設備キー（ｂ）とが所定の関係にあるときのみに前記特殊暗号キーｅを含ませたＢＣＡコード記録をＢＣＡコード記録装置に許可することを特徴とする光ディスク管理システムの管理方法。 A unique serial ID (a) for each BCA code recording device issued by the computer of the manufacturer of the BCA code recording device and a BCA facility key (b) issued and transmitted by the computer of the license management organization for each unique serial ID (a). And a media key (c) issued and transmitted for each title recorded on the optical disc, and a BCA code recording device for recording the BCA code on the optical disc under the control of the BCA equipment controller. The BCA code recording device executes a built-in memory function for storing the unique serial ID (a) and an external memory function for receiving and storing a BCA equipment key (b) from a computer of the license management organization. The license management organization to the BCA equipment controller The function of receiving the media key (c) from the computer and the function of storing the BCA data assigned to each title recorded on the optical disc are executed, and stored in the BCA code recording device by the built-in memory function A function that permits BCA code recording only when the unique serial ID (a) and the BCA equipment key (b) stored by the external memory function are in a predetermined relationship, the received media key (c), and the A function for generating the special encryption key (e) based on the BCA equipment key (b) stored by the external memory function, and a function for recording the generated special encryption key (e) in the BCA data on the optical disc. By executing the above, the BCA equipment controller stores the unique sequence stored by the built-in memory function. An optical disc management system, wherein BCA code recording including the special encryption key e is permitted to the BCA code recording apparatus only when the real ID (a) and the BCA equipment key (b) have a predetermined relationship. Management method. 前記外部メモリ機能によって記憶したＢＣＡ設備キー（ｂ）が、前記ＢＣＡコード記録装置が設置された工場の稼働日のみ、前記ＢＣＡコード記録を許可する機能からのアクセスが可能に設定されている請求項３記載の光ディスク管理システムの管理方法。   The BCA equipment key (b) stored by the external memory function is set to be accessible from the function that permits the BCA code recording only on the working day of the factory where the BCA code recording device is installed. 3. A management method of the optical disc management system according to 3.
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