ATE327552T1 - System zum kopierschutz von aufgezeichneten signalen - Google Patents

System zum kopierschutz von aufgezeichneten signalen

Info

Publication number
ATE327552T1
ATE327552T1 AT98900142T AT98900142T ATE327552T1 AT E327552 T1 ATE327552 T1 AT E327552T1 AT 98900142 T AT98900142 T AT 98900142T AT 98900142 T AT98900142 T AT 98900142T AT E327552 T1 ATE327552 T1 AT E327552T1
Authority
AT
Austria
Prior art keywords
bit
pattern
information
copy protection
recorded signals
Prior art date
Application number
AT98900142T
Other languages
English (en)
Inventor
Johan Paul Marie Gera Linnartz
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE327552T1 publication Critical patent/ATE327552T1/de

Links

Classifications

    • 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
    • G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • 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
    • G11B20/0021—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Storage Device Security (AREA)
AT98900142T 1997-01-27 1998-01-22 System zum kopierschutz von aufgezeichneten signalen ATE327552T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97200165 1997-01-27

Publications (1)

Publication Number Publication Date
ATE327552T1 true ATE327552T1 (de) 2006-06-15

Family

ID=8227947

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98900142T ATE327552T1 (de) 1997-01-27 1998-01-22 System zum kopierschutz von aufgezeichneten signalen

Country Status (10)

Country Link
US (1) US7000113B1 (de)
EP (1) EP0902946B1 (de)
JP (1) JP4046767B2 (de)
KR (1) KR100573627B1 (de)
CN (2) CN101079295A (de)
AT (1) ATE327552T1 (de)
AU (1) AU5337598A (de)
DE (1) DE69834604T2 (de)
TW (1) TW428163B (de)
WO (1) WO1998033176A2 (de)

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US8051290B2 (en) * 2001-12-21 2011-11-01 Koninklijke Philips Electronics N.V. Increasing integrity of watermarks using robust features
US7231061B2 (en) * 2002-01-22 2007-06-12 Digimarc Corporation Adaptive prediction filtering for digital watermarking
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JP3813549B2 (ja) * 2002-06-28 2006-08-23 株式会社東芝 復元方法及び復元システム
JP2004054710A (ja) * 2002-07-22 2004-02-19 Sony Corp 情報処理装置、情報処理方法および情報処理システム
CH695718A5 (fr) * 2002-09-20 2006-07-31 Alpvision Sa Procédé de génération et d'application sur un support d'un marquage spatial numérique.
KR100974449B1 (ko) * 2003-04-24 2010-08-10 엘지전자 주식회사 광디스크의 복사 방지 정보 관리방법
KR100972831B1 (ko) * 2003-04-24 2010-07-28 엘지전자 주식회사 엔크립트된 데이터의 보호방법 및 그 재생장치
KR20040092649A (ko) * 2003-04-24 2004-11-04 엘지전자 주식회사 광디스크의 복사 방지 정보 관리방법
KR100974448B1 (ko) * 2003-04-24 2010-08-10 엘지전자 주식회사 광디스크의 복사 방지 정보 관리방법
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Also Published As

Publication number Publication date
CN1220756A (zh) 1999-06-23
DE69834604T2 (de) 2007-02-22
WO1998033176A2 (en) 1998-07-30
DE69834604D1 (de) 2006-06-29
TW428163B (en) 2001-04-01
KR100573627B1 (ko) 2006-11-10
CN101079295A (zh) 2007-11-28
JP4046767B2 (ja) 2008-02-13
EP0902946A2 (de) 1999-03-24
KR20000064792A (ko) 2000-11-06
EP0902946B1 (de) 2006-05-24
AU5337598A (en) 1998-08-18
US7000113B1 (en) 2006-02-14
WO1998033176A3 (en) 1998-10-01
JP2000508813A (ja) 2000-07-11

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