JP2004534347A - デジタルデータのコピープロテクト - Google Patents

デジタルデータのコピープロテクト Download PDF

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Publication number
JP2004534347A
JP2004534347A JP2003511239A JP2003511239A JP2004534347A JP 2004534347 A JP2004534347 A JP 2004534347A JP 2003511239 A JP2003511239 A JP 2003511239A JP 2003511239 A JP2003511239 A JP 2003511239A JP 2004534347 A JP2004534347 A JP 2004534347A
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JP
Japan
Prior art keywords
data
value
digital data
codeword
syndrome
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.)
Pending
Application number
JP2003511239A
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English (en)
Japanese (ja)
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JP2004534347A5 (enExample
Inventor
エイ エイ ヘイレン，リチャード
Original Assignee
マクロビジョン・コーポレーション
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Publication date
Application filed by マクロビジョン・コーポレーション filed Critical マクロビジョン・コーポレーション
Publication of JP2004534347A publication Critical patent/JP2004534347A/ja
Publication of JP2004534347A5 publication Critical patent/JP2004534347A5/ja
Pending legal-status Critical Current

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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
    • 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • 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
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1809—Pulse code modulation systems for audio signals by interleaving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/13—Linear codes
    • H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/13—Linear codes
    • H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
    • H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2906—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes
    • H03M13/2921—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes wherein error correction coding involves a diagonal direction
    • H03M13/2924—Cross interleaved Reed-Solomon codes [CIRC]
    • 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
    • G11B20/1876—Interpolating methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Error Detection And Correction (AREA)
  • Storage Device Security (AREA)
JP2003511239A 2001-07-03 2002-03-21 デジタルデータのコピープロテクト Pending JP2004534347A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0116278A GB2377511B (en) 2001-07-03 2001-07-03 The copy protection of digital data
PCT/GB2002/001360 WO2003005355A1 (en) 2001-07-03 2002-03-21 The copy protection of digital data

Publications (2)

Publication Number Publication Date
JP2004534347A true JP2004534347A (ja) 2004-11-11
JP2004534347A5 JP2004534347A5 (enExample) 2005-08-18

Family

ID=9917869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003511239A Pending JP2004534347A (ja) 2001-07-03 2002-03-21 デジタルデータのコピープロテクト

Country Status (7)

Country Link
US (1) US20040199855A1 (enExample)
EP (1) EP1410387A1 (enExample)
JP (1) JP2004534347A (enExample)
AR (1) AR034673A1 (enExample)
GB (1) GB2377511B (enExample)
TW (1) TW565765B (enExample)
WO (1) WO2003005355A1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382670A (en) * 2001-07-25 2003-06-04 Macrovision Corp A method of copy protection of digital data by altering codewords to introduce impulse errors which are then marked as uncorrectable
DE60308667T2 (de) * 2002-03-28 2007-08-23 Koninklijke Philips Electronics N.V. Wasserzeichenzeitskalensuchen
JP2004214887A (ja) * 2002-12-27 2004-07-29 Philips Japan Ltd データ処理装置、データ記録再生装置、データ処理方法及びプログラム
GB2397911B (en) * 2003-01-10 2005-03-09 Macrovision Corp The copy protection of digital data
US8266709B2 (en) 2009-02-04 2012-09-11 Harris Technology, Llc Adjustable resolution media format
US8930780B2 (en) * 2012-08-28 2015-01-06 Lsi Corporation Systems and methods for non-zero syndrome based processing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5602815A (en) * 1994-08-09 1997-02-11 Wea Manufacturing, Inc. Method and apparatus for combining CD-ROM data and digital audio on a single disc
JP3430193B2 (ja) * 1997-01-20 2003-07-28 株式会社日立製作所 ディジタル信号再生装置及びディジタル信号再生方法
JP3888473B2 (ja) * 1997-05-30 2007-03-07 マクロヴィジョン ユーロップ リミティッド 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
US6381713B1 (en) * 1999-05-11 2002-04-30 Ericsson Inc. Method for responding to transmission errors in a digital communication system according to characteristics of flawed information fields
IL131545A0 (en) * 1999-08-23 2001-01-28 Ttr Technologies Ltd Copy-protected digital audio compact disc and method and system for producing same
IL133236A0 (en) * 1999-11-30 2001-03-19 Ttr Technologies Ltd Copy-protected digital audio compact disc and method and system for producing same
US6715122B2 (en) * 2000-02-23 2004-03-30 Doug Carson & Associates, Inc. Copy protection through symbol substitution and induced errors
GB2415826B (en) * 2002-03-08 2006-06-07 First 4 Internet Ltd Data protection system
GB2397911B (en) * 2003-01-10 2005-03-09 Macrovision Corp The copy protection of digital data

Also Published As

Publication number Publication date
GB2377511A (en) 2003-01-15
EP1410387A1 (en) 2004-04-21
US20040199855A1 (en) 2004-10-07
TW565765B (en) 2003-12-11
GB0116278D0 (en) 2001-08-29
AR034673A1 (es) 2004-03-03
WO2003005355A1 (en) 2003-01-16
GB2377511B (en) 2005-05-11

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