GB2402543B - Obscuring data in an audiovisual product - Google Patents

Obscuring data in an audiovisual product

Info

Publication number
GB2402543B
GB2402543B GB0412606A GB0412606A GB2402543B GB 2402543 B GB2402543 B GB 2402543B GB 0412606 A GB0412606 A GB 0412606A GB 0412606 A GB0412606 A GB 0412606A GB 2402543 B GB2402543 B GB 2402543B
Authority
GB
United Kingdom
Prior art keywords
audiovisual product
obscuring data
obscuring
data
audiovisual
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.)
Expired - Lifetime
Application number
GB0412606A
Other versions
GB2402543A (en
GB0412606D0 (en
Inventor
Stuart Green
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.)
Zootech Ltd
Original Assignee
Zootech Ltd
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
Priority claimed from GBGB0312874.1A external-priority patent/GB0312874D0/en
Application filed by Zootech Ltd filed Critical Zootech Ltd
Publication of GB0412606D0 publication Critical patent/GB0412606D0/en
Publication of GB2402543A publication Critical patent/GB2402543A/en
Application granted granted Critical
Publication of GB2402543B publication Critical patent/GB2402543B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B20/0092—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
    • G11B20/00942—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 an invalid playback path or program chain
    • 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
    • G11B20/00137—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
    • G11B20/00152—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users involving a password
    • 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
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H04N9/8047—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction using transform coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
GB0412606A 2003-06-05 2004-06-07 Obscuring data in an audiovisual product Expired - Lifetime GB2402543B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0312874.1A GB0312874D0 (en) 2003-06-05 2003-06-05 Controlling access to an audiovisual product
US48032203P 2003-06-20 2003-06-20

Publications (3)

Publication Number Publication Date
GB0412606D0 GB0412606D0 (en) 2004-07-07
GB2402543A GB2402543A (en) 2004-12-08
GB2402543B true GB2402543B (en) 2006-06-21

Family

ID=32715177

Family Applications (3)

Application Number Title Priority Date Filing Date
GB0412601A Expired - Fee Related GB2402541B (en) 2003-06-05 2004-06-07 Scrambled video streams in an audiovisual product
GB0412606A Expired - Lifetime GB2402543B (en) 2003-06-05 2004-06-07 Obscuring data in an audiovisual product
GB0412603A Expired - Fee Related GB2402542B (en) 2003-06-05 2004-06-07 Unlocking an audiovisual product

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0412601A Expired - Fee Related GB2402541B (en) 2003-06-05 2004-06-07 Scrambled video streams in an audiovisual product

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0412603A Expired - Fee Related GB2402542B (en) 2003-06-05 2004-06-07 Unlocking an audiovisual product

Country Status (4)

Country Link
EP (3) EP1634291A1 (en)
JP (3) JP4542089B2 (en)
GB (3) GB2402541B (en)
WO (3) WO2004109680A1 (en)

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EP1914747A3 (en) * 2003-10-31 2013-12-11 Sony DADC Austria AG DVD copy protection
GB0403719D0 (en) 2004-02-19 2004-03-24 Macrovision Europ Ltd Improvements in or relating to the defeat of the copy protection of optical discs
US8059937B2 (en) 2004-02-19 2011-11-15 Rovi Solutions Corporation Relating to the copy protection of optical discs
US9106883B2 (en) 2004-04-22 2015-08-11 Thomson Licensing Context dependent multi-angle navigation technique for digital versatile discs
US7706661B2 (en) 2004-05-19 2010-04-27 Macrovision Corporation Copy protection of optical discs using redundant control data
GB2420438A (en) * 2004-11-18 2006-05-24 Zootech Ltd Remote controller and access control to restricted audiovisual content
EP1875740A2 (en) 2005-04-26 2008-01-09 THOMSON Licensing Synchronized stream packing
JP4515505B2 (en) * 2005-09-28 2010-08-04 パイオニア株式会社 Information recording medium, data structure and recording apparatus
FR2894349B1 (en) * 2005-12-01 2008-10-17 Cyril Bonnan DEVICE FOR LIMITING DATA ACCESS OF AUDIO, VIDEO, AUDIO VIDEO AND MULTIMEDIA MEDIA TO A CONTROL PART OF USERS
US8620145B2 (en) * 2006-09-06 2013-12-31 Corel Corporation, Inc. Methods, system and mediums for use in protecting content
GB2445590A (en) * 2007-01-12 2008-07-16 Zootech Ltd Copy protected media having navigation selection logic and read barriers
ES2288432B1 (en) * 2007-02-15 2009-04-01 Sonopress Ibermemory S.A. RECORDING PROCEDURE
FR2913522A1 (en) * 2007-03-06 2008-09-12 Vincent Lorphelin DVD A ACCESS CONTROL.
US8695103B2 (en) 2007-03-07 2014-04-08 Rovi Solutions Corporation Apparatus for and a method of copy-protecting a content carrying recording medium
GB2457482B (en) * 2008-02-14 2012-10-03 Fortium Technologys Ltd Copy protection system for optical discs
EP2254116A1 (en) * 2009-05-20 2010-11-24 Sony DADC Austria AG Method for copy protection
US9263085B2 (en) 2009-05-20 2016-02-16 Sony Dadc Austria Ag Method for copy protection
EP2254119B1 (en) * 2009-05-20 2019-03-13 Sony DADC Austria AG Method for copy protection
RU2539717C2 (en) * 2009-05-20 2015-01-27 Сони Дадк Аустриа Аг Copy protection method
EP2254120A1 (en) * 2009-05-20 2010-11-24 Sony DADC Austria AG Method for copy protection
CN110267082B (en) * 2019-06-03 2020-05-05 李少锋 Playing control method and system for automatically switching audio and video according to language minimum unit

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WO2000005715A1 (en) * 1998-07-20 2000-02-03 Thomson Consumer Electronics, Inc. Digital video apparatus user interface
US20010019612A1 (en) * 2000-03-03 2001-09-06 Hajime Kitani Video distribution playback method, apparatus to be disposed on video distribution end, apparatus to be disposed on video playback end, computer readable medium, and movie distribution method
US20030014751A1 (en) * 2001-07-13 2003-01-16 Samsung Electronics Co., Ltd. Method of controlling levels used to restrict video reproduction by video reproducing system and apparatus for controlling the same

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US5400319A (en) * 1993-10-06 1995-03-21 Digital Audio Disc Corporation CD-ROM with machine-readable I.D. code
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DE726013T1 (en) * 1993-10-29 1998-01-02 Time Warner Entertainment Co., L.P., Burbank, Calif. SYSTEM AND METHOD FOR PLAYBACK CONTROL OF SEVERAL MOVIE FILES STORED ON AN OPTICAL DISK
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Patent Citations (3)

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WO2000005715A1 (en) * 1998-07-20 2000-02-03 Thomson Consumer Electronics, Inc. Digital video apparatus user interface
US20010019612A1 (en) * 2000-03-03 2001-09-06 Hajime Kitani Video distribution playback method, apparatus to be disposed on video distribution end, apparatus to be disposed on video playback end, computer readable medium, and movie distribution method
US20030014751A1 (en) * 2001-07-13 2003-01-16 Samsung Electronics Co., Ltd. Method of controlling levels used to restrict video reproduction by video reproducing system and apparatus for controlling the same

Also Published As

Publication number Publication date
GB2402543A (en) 2004-12-08
GB2402541B (en) 2008-01-02
JP2007527588A (en) 2007-09-27
WO2004109678A1 (en) 2004-12-16
JP2010123247A (en) 2010-06-03
EP1634290A1 (en) 2006-03-15
WO2004109680A1 (en) 2004-12-16
GB0412603D0 (en) 2004-07-07
GB0412606D0 (en) 2004-07-07
GB2402542B (en) 2008-01-02
EP1634291A1 (en) 2006-03-15
JP4542089B2 (en) 2010-09-08
JP2006526864A (en) 2006-11-24
WO2004109679A1 (en) 2004-12-16
GB2402542A (en) 2004-12-08
EP1634289A1 (en) 2006-03-15
JP4680892B2 (en) 2011-05-11
GB0412601D0 (en) 2004-07-07
GB2402541A (en) 2004-12-08

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20240606