GB0118161D0 - The copy protection of digital audio data - Google Patents

The copy protection of digital audio data

Info

Publication number
GB0118161D0
GB0118161D0 GBGB0118161.9A GB0118161A GB0118161D0 GB 0118161 D0 GB0118161 D0 GB 0118161D0 GB 0118161 A GB0118161 A GB 0118161A GB 0118161 D0 GB0118161 D0 GB 0118161D0
Authority
GB
United Kingdom
Prior art keywords
audio data
digital audio
copy protection
copy
protection
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.)
Withdrawn
Application number
GBGB0118161.9A
Other versions
GB2382670A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rovi Corp
Original Assignee
Macrovision Corp
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 Macrovision Corp filed Critical Macrovision Corp
Priority to GB0118161A priority Critical patent/GB2382670A/en
Publication of GB0118161D0 publication Critical patent/GB0118161D0/en
Publication of GB2382670A publication Critical patent/GB2382670A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/018—Audio watermarking, i.e. embedding inaudible data in the audio signal
    • 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
    • G11B20/00884—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
    • 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
    • G11B20/00891—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 embedded in audio data
    • 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
GB0118161A 2001-07-25 2001-07-25 A method of copy protection of digital data by altering codewords to introduce impulse errors which are then marked as uncorrectable Withdrawn GB2382670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0118161A GB2382670A (en) 2001-07-25 2001-07-25 A method of copy protection of digital data by altering codewords to introduce impulse errors which are then marked as uncorrectable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0118161A GB2382670A (en) 2001-07-25 2001-07-25 A method of copy protection of digital data by altering codewords to introduce impulse errors which are then marked as uncorrectable

Publications (2)

Publication Number Publication Date
GB0118161D0 true GB0118161D0 (en) 2001-09-19
GB2382670A GB2382670A (en) 2003-06-04

Family

ID=9919178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0118161A Withdrawn GB2382670A (en) 2001-07-25 2001-07-25 A method of copy protection of digital data by altering codewords to introduce impulse errors which are then marked as uncorrectable

Country Status (1)

Country Link
GB (1) GB2382670A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397911B (en) * 2003-01-10 2005-03-09 Macrovision Corp The copy protection of digital data

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100381118B1 (en) * 1994-04-18 2003-04-21 마쯔시다덴기산교 가부시키가이샤 Method and system for prevention of illegal copy and install of information on optical recording media
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
GB2377511B (en) * 2001-07-03 2005-05-11 Macrovision Europ Ltd The copy protection of digital data

Also Published As

Publication number Publication date
GB2382670A (en) 2003-06-04

Similar Documents

Publication Publication Date Title
GB2355575B (en) The copy protection of digital audio compact discs
GB2366444B (en) The copy protection of digital audio compact discs
GB2365202B (en) The copy protection of digital audio compact discs
AU2001276412A1 (en) Protection of content reproduction using digital rights
AU2002327021A1 (en) Digital audio system
AU2002216558A1 (en) Secure digital signing of data
AU2002350120A1 (en) Digital audio device
GB2377511B (en) The copy protection of digital data
GB2387956B (en) Secure digital recording
AU2003254470A1 (en) Ensuring the copy protection of digital data
AU2002353211A1 (en) Digital watermarking
GB0118161D0 (en) The copy protection of digital audio data
GB0118353D0 (en) Digital video copy protection
GB2397911B (en) The copy protection of digital data
GB0212386D0 (en) Copy protect
AU2002244833A1 (en) The copy protection of digital data
AU2003274455A1 (en) Secure local copy protection
GB0300596D0 (en) The copy protection of digital data
AU2002223894A1 (en) Digital video copy protection
AU2003285706A1 (en) Increasing the extendibility of disk copy protection
AU2002232792A1 (en) Processing of digital video data
GB0128781D0 (en) Data copy protection
GB0008820D0 (en) Digital signing of data
AU2002304818A1 (en) Digital audio processor
GB0227962D0 (en) Data copy protection

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)