JP2001507849A - 記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法 - Google Patents
記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法Info
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- JP2001507849A JP2001507849A JP50041799A JP50041799A JP2001507849A JP 2001507849 A JP2001507849 A JP 2001507849A JP 50041799 A JP50041799 A JP 50041799A JP 50041799 A JP50041799 A JP 50041799A JP 2001507849 A JP2001507849 A JP 2001507849A
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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
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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
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
- G11B20/00949—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches said intentional errors occurring due to bad sectors, which are either physically destroyed or which are declared defective in the defect management information
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/80—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in storage media based on magnetic or optical technology, e.g. disks with sectors
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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
- G11B20/00101—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the original record carrier having a larger recording capacity than the potential target 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
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the 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
- G11B20/00166—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
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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
- G11B20/00485—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
- G11B20/00557—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 further management data is encrypted, e.g. sector headers, TOC or the lead-in or lead-out areas
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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
- G11B20/00659—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a control step which is implemented as an executable file stored on the 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
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
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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
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00963—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are not generated on purpose, e.g. random defect patterns occurring during the normal manufacture
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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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1866—Error detection or correction; Testing, e.g. of drop-outs by interleaving
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Detection And Correction Of Errors (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. (a) メイン情報を有する画像ファイルを生成し、 (b) 前記メイン情報へのアクセスを制御するアクセス制御情報を発生させ、 (c) 既定のフォーマットおよびエラー訂正ルールを前記画像ファイルに適用す ることによってビットシークエンスを形成するステップと、前記ビット シークエンスをマークの物理パターンに翻訳するステップとにより、前記 画像ファイルと前記アクセス制御情報とに応じてマスタキャリアを作成し 、そして (d) 前記マスタキャリアを使用して前記記録担体をマルティプリケートする、 既定のフォーマットおよびエラー訂正ルールにしたがって記録担体上に格 納されている情報を有する記録担体をコピー保護する方法において、 作成ステップ(c)において、前記ビットシークエンス内のビットが、当該エ ラー訂正ルールにより訂正が出来ずかつエラーパターンを構成する論理エラー を構成するように、前記アクセス制御情報にしたがって変更されることを特徴 とする記録担体をコピー保護する方法。 2. 前記メイン情報の少なくとも一部が、前記アクセス制御情報に応じて暗号 化されていることを特徴とする請求項1に記載の方法。 3. 前記画像ファイルが、前記アクセス制御情報の少なくとも一部を含み、か つ前記エラーパターンが、その含まれたアクセス制御情報に応じて発生するこ とを特徴とする請求項1に記載の方法。 4. 既定のフォーマットおよびエラー訂正ルールに従う情報を表す記録担体上 に格納されているビットシークエンスを有し、前記情報が、メイン情報と前記 メイン情報へのアクセスを制御するアクセス制御情報とを有するコピー保護さ れた記録担体において、前記ビットシークエンスが、当該エラー訂正ルールに より訂正することができずかつ前記アクセス制御情報の少なくとも一部を表す エラーパターンを構成する論理エラーを構成するビットエラーを有することを 特徴とするコピー保護された記録担体。 5. アドレス可能なセクターに細分割されているコピー保護された記録担体に おいて、前記記録担体が、エラーセクターと非エラーセクターとを有するパ ディング領域を有し、そのエラーセクターが前記論理エラーを有しかつ前記エ ラーパターンを構成していることを特徴とする請求項4に記載の記録担体。 6. エラーセクターに隣接している非エラーセクターに対応する前記ビット シークエンスの部分が、何のビットエラーも実質的に有しないことを特徴とす る請求項5に記載のコピー保護された記録担体。 7. 前記記録担体が、前記メイン情報がその一部分を占め、前記パディング領 域がその残存部分を実質的に占める既定の情報記憶容量を有することを特徴と する請求項5に記載のコピー保護された記録担体。 8. 前記ビットシークエンスが、情報ビットとエラー訂正ビットとを有し、前 記情報ビットが前記ビットエラーを有することを特徴とする請求項4に記載の コピー保護された記録担体。 9. 前記ビットエラーが、再生時にエラー語訂正ルールにより訂正することが できない少なくとも1個のエラー語内に蓄積するような位置に置かれることを 特徴とする請求項4に記載のコピー保護された記録担体。 10.前記記録担体が、CDで、前記エラー語訂正ルールが、前記C2層であるこ とを特徴とする請求項9に記載のコピー保護された記録担体。 11.前記ビットエラーが、前記フォーマットおよびエラー訂正ルールの一部で あるデインターリービングにより蓄積するように位置することを特徴とする請 求項9に記載のコピー保護された記録担体。 12.前記ビットエラーが、第二エラー語訂正ルールにより訂正することができ ない少なくとも1個の第二エラー語内に蓄積するように位置することを特徴と する請求項9に記載のコピー保護された記録担体。 13.前記記録担体がCDで、前記エラー語訂正ルールが前記C2層で、かつ前記 第二エラー語訂正ルールが、前記CDエラー訂正ルールの前記C1層であること を特徴とする請求項11または12に記載のコピー保護された記録担体。 14.請求項4〜13の何れかに記載のコピー保護された記録担体上のアクセス制御 情報の検出方法において、前記方法が、前記エラーパターンにしたがって論理 エラーを持つべきエラー位置を全てではなく、少なくとも1箇所選択するス テップと、前記選択されたエラー位置を読み込むことによりエラーの存在を検 証するステップとを有することを特徴とする検出方法。 15.前記方法が、さらに、前記エラーパターンにしたがって論理エラーを持つ べきでない非エラー位置を全てではなく、少なくとも1箇所選択するステップ と、前記選択された非エラー位置を読み込むことによりエラーの不存在を検証 するステップとを有することを特徴とする請求項14に記載のアクセス制御情 報の検出方法。 16.少なくとも1個の非エラー位置が、エラー位置に隣接するように選択される ことを特徴とする請求項14に記載のアクセス制御情報の検出方法。 17.前記方法が、位置を選択する前に前記メイン情報から前記エラーパターン を示すアクセス制御情報を検索するステップを有していることを特徴とする請 求項14に記載のアクセス制御情報の検出方法。 18.前記記録担体がアドレス可能なセクターに細分割されていて、ある位置で のエラーの存在または不存在が、前記各セクターを読み込みかつ訂正不可能な エラーが前記セクターを読み込む間に検出されたときにはエラーメッセージを 発生させることにより検証されることを特徴とする請求項14に記載のアクセ ス制御情報の検出方法。 19.請求項4に記載のコピー保護された記録担体において、前記記録担体が、 コンピュータシステムで請求項14〜18の何れかに記載の方法を実行するソフト ウェアを有していることを特徴とする記録担体。 20.請求項4〜13の何れかに記載のコピー保護された記録担体から情報を検索す る検索回路であって、前記回路が、前記記録担体を読み出す読み出し手段と、 前記記録担体に格納されているビットシークエンスを抽出する読み出しユニッ ト(41,42)を有する読み出し手段と、前記ビットシークエンスを処理するエラ ー訂正ユニット(43)とを有している、検索回路において、前記回路が、前記エ ラーパターンにしたがって論理エラーを持つべきエラー位置を全てではなく、 少なくとも1箇所選択する前記読み出し手段を介して前記選択されたエラー位 置を読み出すことによりエラーの存在を検証することとにより、前記ア クセス制御情報を検出するように構成されている、前記情報への前記アクセス を制御するアクセス制御手段を有することを特徴とする検索回路。 21.前記記録担体が、アドレス可能なセクターに細分割されていて、前記読み 出し手段が、セクターの読み出しを制御しかつ訂正不可能なエラーが検出され たときにはエラーメッセージを発生させる制御ユニット(46)を有することを特 徴とする請求項20に記載の検索回路。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP97303706 | 1997-05-30 | ||
EP97303706.2 | 1997-05-30 | ||
PCT/IB1998/000800 WO1998054713A1 (en) | 1997-05-30 | 1998-05-25 | Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006290747A Division JP4183724B2 (ja) | 1997-05-30 | 2006-10-26 | 記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法 |
Publications (2)
Publication Number | Publication Date |
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JP2001507849A true JP2001507849A (ja) | 2001-06-12 |
JP3888473B2 JP3888473B2 (ja) | 2007-03-07 |
Family
ID=8229351
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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JP50041799A Expired - Fee Related JP3888473B2 (ja) | 1997-05-30 | 1998-05-25 | 記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法 |
JP2006290747A Expired - Fee Related JP4183724B2 (ja) | 1997-05-30 | 2006-10-26 | 記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006290747A Expired - Fee Related JP4183724B2 (ja) | 1997-05-30 | 2006-10-26 | 記録担体のコピー保護方法、コピー保護された記録担体およびアクセス制御情報を検出する方法 |
Country Status (18)
Country | Link |
---|---|
US (3) | US6353890B1 (ja) |
EP (3) | EP0916134A1 (ja) |
JP (2) | JP3888473B2 (ja) |
KR (1) | KR100526943B1 (ja) |
CN (3) | CN1192378C (ja) |
AR (1) | AR009877A1 (ja) |
AT (2) | ATE302462T1 (ja) |
AU (1) | AU7228298A (ja) |
BR (1) | BR9804931B1 (ja) |
CA (1) | CA2261899C (ja) |
DE (2) | DE69831275T2 (ja) |
DK (2) | DK1227482T3 (ja) |
ES (2) | ES2303025T3 (ja) |
HK (1) | HK1024086A1 (ja) |
IL (1) | IL128257A (ja) |
SG (1) | SG131753A1 (ja) |
TW (1) | TW399200B (ja) |
WO (1) | WO1998054713A1 (ja) |
Cited By (3)
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WO2003065363A1 (fr) * | 2002-01-31 | 2003-08-07 | Sony Corporation | Support d'enregistrement, procede et appareil d'enregistrement, procede et appareil de reproduction, procede de transmission de donnees et procede de demodulation de donnees |
JP2003530657A (ja) * | 2000-04-07 | 2003-10-14 | ソニー デーアーデーツェー オーストリア アクチェンゲゼルシャフト | 光ディスクのコピー防止システム |
WO2011096344A1 (ja) * | 2010-02-02 | 2011-08-11 | 日本電気株式会社 | 情報記録装置、情報再生装置、情報再生方法及び情報記録方法 |
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AU4194199A (en) * | 1998-05-20 | 1999-12-06 | Recording Industry Association Of America | Data disc modulation for minimizing pirating |
US6425098B1 (en) | 1998-10-20 | 2002-07-23 | Midbar Tech (1998) Ltd. | Prevention of disk piracy |
US6988206B1 (en) | 1998-10-20 | 2006-01-17 | Macrovision Europe Limited | Prevention of CD-audio piracy using sub-code channels |
DE60041318D1 (de) * | 1999-07-13 | 2009-02-26 | Koninkl Philips Electronics Nv | Abtastvorrichtung für einen informationsträger, he |
IL131545A0 (en) * | 1999-08-23 | 2001-01-28 | Ttr Technologies Ltd | Copy-protected digital audio compact disc and method and system for producing same |
US7191153B1 (en) * | 1999-09-10 | 2007-03-13 | Dphi Acquisitions, Inc. | Content distribution method and apparatus |
IL133236A0 (en) * | 1999-11-30 | 2001-03-19 | Ttr Technologies Ltd | Copy-protected digital audio compact disc and method and system for producing same |
GB2357165B (en) * | 1999-12-02 | 2004-06-16 | Internat Federation Of The Pho | Copyright protection system and method |
DE10000723A1 (de) * | 2000-01-12 | 2001-07-19 | Phenomedia Ag | Datenträger und Verfahren zur Herstellung eines kopiergeschützten Datenträgers |
KR20010076729A (ko) * | 2000-01-27 | 2001-08-16 | 배태후 | 복제 차단 기능을 갖는 광학 기록 매체, 이의 제조 및재생 방법 |
GB0003530D0 (en) * | 2000-02-15 | 2000-04-05 | Dilla Limited C | The copy protection of digital audio compact discs |
US6768709B2 (en) | 2000-02-23 | 2004-07-27 | Doug Carson & Associates, Inc. | Hiding digital data in a digital audio or video carrier signal |
US6715122B2 (en) | 2000-02-23 | 2004-03-30 | Doug Carson & Associates, Inc. | Copy protection through symbol substitution and induced errors |
TW509900B (en) | 2000-02-29 | 2002-11-11 | Via Tech Inc | Error correction method for correcting errors in digital data |
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JP2003530657A (ja) * | 2000-04-07 | 2003-10-14 | ソニー デーアーデーツェー オーストリア アクチェンゲゼルシャフト | 光ディスクのコピー防止システム |
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