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AR036808A1 - Mejoras en, o relacionadas con, la proteccion de los discos opticos contra su copiado - Google Patents

Mejoras en, o relacionadas con, la proteccion de los discos opticos contra su copiado

Info

Publication number
AR036808A1
AR036808A1 ARP020103845A ARP020103845A AR036808A1 AR 036808 A1 AR036808 A1 AR 036808A1 AR P020103845 A ARP020103845 A AR P020103845A AR P020103845 A ARP020103845 A AR P020103845A AR 036808 A1 AR036808 A1 AR 036808A1
Authority
AR
Argentina
Prior art keywords
data
session
information
files
audio
Prior art date
Application number
ARP020103845A
Other languages
English (en)
Inventor
Mark Dominic Jackson
Richard Heylen
Baruch Sollish
Original Assignee
Macrovision Corp
Ttr Technologies Inc
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, Ttr Technologies Inc filed Critical Macrovision Corp
Publication of AR036808A1 publication Critical patent/AR036808A1/es

Links

Classifications

    • 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
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • 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
    • G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
    • G11B20/00202—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier wherein the copy protection scheme builds on multi-session recording, e.g. defective table of contents [TOC] in the 2nd session
    • 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
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00615—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames
    • G11B20/0063—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames wherein the modification to the logical format mainly concerns management data, e.g., by changing the format of the TOC or the subcode
    • 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
    • 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
    • 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
    • G11B20/00956—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 TOC
    • 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
    • G11B2220/2545—CDs
    • 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
    • G11B2220/2583—Optical discs wherein two standards are used on a single disc, e.g. one DVD section and one CD section

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

En un método para la protección anti-copiado de un disco óptico que lleva información y datos de control, el acceso a la información seleccionada es controlado eliminando, corrompiendo o volviendo de alguna otra manera incorrectos o imprecisos los datos de control que describen la información seleccionada. Por ejemplo, cuando un disco óptico transporta tanto una primera sesión de datos, de audio, como una segunda sesión de datos, la sesión de audio puede ser efectivamente escondida de un aparato lector de datos mediante la inclusión de datos de control en la sesión de datos que identifica incorrectamente los archivos de audio como archivos de datos. Además, o como una alternativa, la información en los archivos, directorios o descriptores del volumen de información que integran una sesión de datos, puede ser removida, corrompida o vuelta incorrecta para evitar de forma similar que un aparato lector de datos pueda acceder a la información.
ARP020103845A 2001-10-15 2002-10-15 Mejoras en, o relacionadas con, la proteccion de los discos opticos contra su copiado AR036808A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0124723.8A GB0124723D0 (en) 2001-10-15 2001-10-15 Improvements in or relating to the copy protection of optical discs

Publications (1)

Publication Number Publication Date
AR036808A1 true AR036808A1 (es) 2004-10-06

Family

ID=9923859

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP020103845A AR036808A1 (es) 2001-10-15 2002-10-15 Mejoras en, o relacionadas con, la proteccion de los discos opticos contra su copiado

Country Status (7)

Country Link
US (1) US20050008812A1 (es)
EP (1) EP1438718A2 (es)
JP (1) JP2005505884A (es)
AR (1) AR036808A1 (es)
GB (2) GB0124723D0 (es)
TW (1) TWI298157B (es)
WO (1) WO2003034424A2 (es)

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JP3864881B2 (ja) * 2002-09-24 2007-01-10 ヤマハ株式会社 電子音楽システムおよび電子音楽システム用プログラム
JP2004127387A (ja) * 2002-09-30 2004-04-22 Mitsumi Electric Co Ltd 光ディスク装置及び光ディスクのイニシャライズ方法
US7161885B2 (en) 2002-12-06 2007-01-09 Macrovision Corporation Copy-protected compact disc and method for producing same
GB2402802B (en) 2003-06-09 2007-05-30 First 4 Internet Ltd Copy protection system for data carriers
GB2433157B (en) * 2003-06-09 2007-11-21 First 4 Internet Ltd Copy protection system for data carriers
ATE381761T1 (de) 2003-10-31 2008-01-15 Sony Dadc Austria Ag Dvd kopierschutz
GB2407693B (en) * 2003-11-03 2006-03-15 Macrovision Europ Ltd Improvements in or relating to the formatting of optical discs
GB2407911A (en) * 2003-11-07 2005-05-11 Macrovision Europ Ltd Copy protection of optical discs
US8059937B2 (en) 2004-02-19 2011-11-15 Rovi Solutions Corporation Relating to the copy protection of optical discs
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
US7706661B2 (en) * 2004-05-19 2010-04-27 Macrovision Corporation Copy protection of optical discs using redundant control data
US20100239088A1 (en) * 2006-03-13 2010-09-23 Dtr Limited Method and system for digital content protection
US8837721B2 (en) 2007-03-22 2014-09-16 Microsoft Corporation Optical DNA based on non-deterministic errors
US8788848B2 (en) * 2007-03-22 2014-07-22 Microsoft Corporation Optical DNA
GB2449647B (en) 2007-05-29 2010-01-13 Fortium Technologies Ltd Optical discs
GB2457482B (en) * 2008-02-14 2012-10-03 Fortium Technologys Ltd Copy protection system for optical discs
US20090217388A1 (en) * 2008-02-27 2009-08-27 Macrovision Corporation Apparatus for and a method of copy-protecting a content carrying recording medium
US20100214894A1 (en) * 2009-02-20 2010-08-26 Microsoft Corporation Optical Medium with Added Descriptor to Reduce Counterfeiting
US9135948B2 (en) * 2009-07-03 2015-09-15 Microsoft Technology Licensing, Llc Optical medium with added descriptor to reduce counterfeiting
US9195810B2 (en) 2010-12-28 2015-11-24 Microsoft Technology Licensing, Llc Identifying factorable code
WO2015072933A1 (en) * 2013-11-13 2015-05-21 Ivan ŠAFÁRIK A method of protection of optical media, such as CDs and DVDs against unauthorised copying and a non-standard optical audio disc and video disc with protection against loading and playing in personal computers and matrices for making thereof

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EP0852053B1 (en) * 1996-07-24 2007-02-14 Koninklijke Philips Electronics N.V. Improvements in and relating to optically readable discs and disc recording apparatus
JPH10106146A (ja) * 1996-09-25 1998-04-24 Victor Co Of Japan Ltd ディスクの記録再生方法及び再生装置
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Also Published As

Publication number Publication date
GB0223859D0 (en) 2002-11-20
GB0124723D0 (en) 2001-12-05
WO2003034424A3 (en) 2003-08-14
GB2383185A (en) 2003-06-18
TWI298157B (en) 2008-06-21
JP2005505884A (ja) 2005-02-24
US20050008812A1 (en) 2005-01-13
GB2383185B (en) 2005-07-13
EP1438718A2 (en) 2004-07-21
WO2003034424A2 (en) 2003-04-24

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal