MXPA02005360A - Disco compacto digital de audio protegido contra copias, y metodo y sistema para producir el mismo. - Google Patents
Disco compacto digital de audio protegido contra copias, y metodo y sistema para producir el mismo.Info
- Publication number
- MXPA02005360A MXPA02005360A MXPA02005360A MXPA02005360A MXPA02005360A MX PA02005360 A MXPA02005360 A MX PA02005360A MX PA02005360 A MXPA02005360 A MX PA02005360A MX PA02005360 A MXPA02005360 A MX PA02005360A MX PA02005360 A MXPA02005360 A MX PA02005360A
- Authority
- MX
- Mexico
- Prior art keywords
- copy
- compact disc
- producing same
- digital audio
- protected digital
- Prior art date
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
- G11B20/10—Digital recording or reproducing
-
- 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
-
- 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
- G11B20/10—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
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1251—Formatting, e.g. arrangement of data block or words on the record carriers on discs for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
-
- 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
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
-
- 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
- G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
-
- 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
- G11B2220/2545—CDs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Un disco compacto de audio digital protegido contra copias y un metodo para producir el mismo, de modo que ni la reproduccion adecuada del original, ni el refuerzo de la proteccion contra copias, depende del uso de cualquier equipo especial. Se incorpora un patron de ruido latente en un CD de audio digital, sobrescribiendo parte de los simbolos de datos de la senal de audio original con valores burdamente erroneos, y sobrescribiendo posteriormente los simbolos de paridad de correccion de error correspondiente, de una forma tal que se crea un error incorregible en las palabras de codigo que contengan valores erroneos. Un reproductor de CD ordinario de un disco, detectara por lo tanto el surgimiento de un valor de ruido latente como un error incorregible y aplicara la ocultacion de error de interpolacion para evitar la salida del error. Al elegir en forma apropiada las ubicaciones para la sobreescritura de los valores erroneos, de tal forma que el valor interpolado sea substancialmente identico al valor original, la salida de ruido resultante procedente del reproductor de CD, coincidira con la de la senal de audio original, de modo que un reproductor de audio de CD ordinario reproducira en forma correcta la senal de audio original procedente del disco protegido sin cualquier ruido superimpuesto. Sin embargo, la mayor parte de las unidades de disco CD-ROM para computadoras comercialmente disponibles, no emplean la ocultacion de error cuando se lee un disco compacto en la forma de una fuente de datos. Dependiendo del software de copiado empleado con tales unidades de disco CD-ROM, cuando se detecta un error incorregible, ya sea que no se leen los datos de disco, o unicamente se leen los datos no corregidos sin procesar del disco. Por lo tanto, no se podran copiar cualesquiera partes substanciales del disco original debido a los errores incorregibles, o se copiaran los datos sin procesar no corregidos del disco original, lo cual coloca ruido audible en la copia no autorizada. Para inhibir el copiado no autorizado por medio de las unidades de disco CD-ROM que emplean ocultacion de error, se realizan alteraciones al modo Q del canal y/o CEC, para deshabilitar la capacidad de la unidad de disco CD-ROM de buscar la posicion de los datos deseados.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL13323699A IL133236A0 (en) | 1999-11-30 | 1999-11-30 | Copy-protected digital audio compact disc and method and system for producing same |
PCT/IL2000/000792 WO2001041130A2 (en) | 1999-11-30 | 2000-11-27 | Copy-protected digital audio compact disc, and method and system for producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
MXPA02005360A true MXPA02005360A (es) | 2004-05-05 |
Family
ID=11073552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MXPA02005360A MXPA02005360A (es) | 1999-11-30 | 2000-11-27 | Disco compacto digital de audio protegido contra copias, y metodo y sistema para producir el mismo. |
Country Status (11)
Country | Link |
---|---|
US (1) | US6718501B1 (es) |
EP (1) | EP1245025A4 (es) |
JP (1) | JP2003535420A (es) |
KR (1) | KR100701236B1 (es) |
AU (1) | AU1727701A (es) |
BR (1) | BR0016182A (es) |
DE (1) | DE10084721B4 (es) |
GB (1) | GB2371916B (es) |
IL (1) | IL133236A0 (es) |
MX (1) | MXPA02005360A (es) |
WO (1) | WO2001041130A2 (es) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001057022A (ja) * | 1999-08-18 | 2001-02-27 | Sony Corp | データ記録媒体、データ記録装置、データ記録方法、データ再生装置およびデータ再生方法 |
IL131545A0 (en) * | 1999-08-23 | 2001-01-28 | Ttr Technologies Ltd | Copy-protected digital audio compact disc and method and system for producing same |
GB0003530D0 (en) * | 2000-02-15 | 2000-04-05 | Dilla Limited C | The copy protection of digital audio compact discs |
JP2001351319A (ja) * | 2000-06-06 | 2001-12-21 | Pioneer Electronic Corp | 著作権保護方法、再生方法、再生装置、記録方法及び記録装置 |
US6928040B2 (en) * | 2000-06-14 | 2005-08-09 | Macrovision Corporation | Identifying copy protected optical compact discs |
WO2002015185A1 (en) * | 2000-08-14 | 2002-02-21 | Koninklijke Philips Electronics N.V. | Method of device for adding or extracting a secondary information signal to/from a rll code sequence |
RU2004115730A (ru) * | 2000-11-27 | 2005-02-27 | Макровижн Юроп Лимитед (Gb) | Диск dvd с защитой от копирования и способ его производства и проверки достоверности |
CA2434538A1 (en) * | 2000-12-14 | 2002-10-17 | Ecd Systems, Inc. | Systems and methods for optical media modification |
EP1393305A4 (en) * | 2001-05-21 | 2005-11-23 | Sunncomm Inc | APPARATUS AND METHOD FOR DISSIMULATING THE DIGITAL CONTENT OF A RECORDING MEDIUM RECORDED USING A RECORDING DEVICE |
US7103261B2 (en) * | 2001-06-04 | 2006-09-05 | William Grecia | Consumer friendly error correcting formating method for white book 2.0 video compact disc with CD-DA red book audio tracks |
GB2377511B (en) * | 2001-07-03 | 2005-05-11 | Macrovision Europ Ltd | The copy protection of digital data |
US20040030900A1 (en) * | 2001-07-13 | 2004-02-12 | Clark James R. | Undetectable watermarking technique for audio media |
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 |
US7562396B2 (en) * | 2001-08-21 | 2009-07-14 | Ecd Systems, Inc. | Systems and methods for media authentication |
ES2221506B1 (es) * | 2001-10-16 | 2005-10-01 | Sonopress Ibermemory, S.A. | Procedimiento de grabacion de cd-audio para evitar su copia. |
JP3688628B2 (ja) * | 2001-11-09 | 2005-08-31 | 株式会社東芝 | 信号処理方法及び装置、信号再生方法及び装置、記録媒体 |
US6952479B2 (en) | 2001-11-27 | 2005-10-04 | Macrovision Europe Limited | Dynamic copy protection of optical media |
US7643393B2 (en) * | 2001-12-12 | 2010-01-05 | Ecd Systems, Inc. | Systems and methods for optical media modification |
CN1647185A (zh) * | 2002-01-22 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | 记录载体 |
US7716485B2 (en) * | 2002-02-01 | 2010-05-11 | Sca Ipla Holdings Inc. | Systems and methods for media authentication |
CN100354967C (zh) * | 2002-02-20 | 2007-12-12 | 索尼株式会社 | 用于记录介质的记录方法及装置、再现方法及装置、标识方法、以及数据传送方法及接收处理方法 |
US20030159049A1 (en) * | 2002-02-21 | 2003-08-21 | Koninklijke Philips Electronics N.V. | Copy-protection by alteration of control signals |
US20030161469A1 (en) * | 2002-02-25 | 2003-08-28 | Szeming Cheng | Method and apparatus for embedding data in compressed audio data stream |
US7266466B2 (en) * | 2002-03-28 | 2007-09-04 | Koninklijke Philips Electronics N.V. | Watermark time scale searching |
JP4132934B2 (ja) * | 2002-04-12 | 2008-08-13 | 株式会社ソニー・ディスクアンドデジタルソリューションズ | 再生専用光記録媒体および光記録方法 |
JP2005523548A (ja) * | 2002-04-18 | 2005-08-04 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | サブコードチャネルに記録可能領域を有する読み出し専用記録キャリア |
JP2004030815A (ja) * | 2002-06-27 | 2004-01-29 | Ricoh Co Ltd | プログラム、記録媒体、情報処理システム及びコピープロテクト方法 |
US7340778B2 (en) * | 2002-07-24 | 2008-03-04 | Macrovision Corporation | Method and apparatus for ensuring the copy protection of digital data |
JP4066736B2 (ja) * | 2002-07-26 | 2008-03-26 | 日本ビクター株式会社 | ディジタル情報信号記録方法 |
US7234097B1 (en) * | 2003-01-27 | 2007-06-19 | Marvell International Ltd. | Methods of supporting host CRC in data storage systems without RLL coding |
US6897792B1 (en) * | 2003-05-21 | 2005-05-24 | Marvell International Ltd. | Reducing number of consecutive ones in data-dependent scrambler |
US7475331B1 (en) | 2003-10-07 | 2009-01-06 | Marvell International Ltd. | Data dependent scrambler with improved global constraint |
US7328395B1 (en) | 2004-04-13 | 2008-02-05 | Marvell International Ltd. | Iterative Reed-Solomon error-correction decoding |
US20060023598A1 (en) * | 2004-07-30 | 2006-02-02 | Babinski James P | Method and apparatus for protecting against copying of content recorded on optical recording media |
US20060136729A1 (en) * | 2004-12-20 | 2006-06-22 | Macrovision Europe Limited | Copy protection for optical discs |
US20060253722A1 (en) * | 2005-04-21 | 2006-11-09 | Nielsen Hans H | Uncopyable optical media through sector errors |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5394274A (en) * | 1988-01-22 | 1995-02-28 | Kahn; Leonard R. | Anti-copy system utilizing audible and inaudible protection signals |
DE3806411C2 (de) * | 1988-02-29 | 1996-05-30 | Thomson Brandt Gmbh | Verfahren zur Übertragung eines Tonsignals und eines Zusatzsignals |
JP3230319B2 (ja) * | 1992-07-09 | 2001-11-19 | ソニー株式会社 | 音響再生装置 |
US5513260A (en) * | 1994-06-29 | 1996-04-30 | Macrovision Corporation | Method and apparatus for copy protection for various recording media |
SE514352C2 (sv) * | 1996-07-05 | 2001-02-12 | Ifunga Test Equipment Bv | Sätt att förse en optisk databärare med identitetsinformation |
EP0916134A1 (en) * | 1997-05-30 | 1999-05-19 | C-Dilla | Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information |
US6104679A (en) * | 1998-10-01 | 2000-08-15 | T.T.R. Technologies Ltd. | Method for determining an unauthorized copy of an optical disc |
GB9912312D0 (en) * | 1999-05-26 | 1999-07-28 | Dilla Limited C | The copy protection of digital audio compact discs |
IL131545A0 (en) * | 1999-08-23 | 2001-01-28 | Ttr Technologies Ltd | Copy-protected digital audio compact disc and method and system for producing same |
-
1999
- 1999-11-30 IL IL13323699A patent/IL133236A0/xx unknown
-
2000
- 2000-11-27 MX MXPA02005360A patent/MXPA02005360A/es active IP Right Grant
- 2000-11-27 JP JP2001542103A patent/JP2003535420A/ja active Pending
- 2000-11-27 AU AU17277/01A patent/AU1727701A/en not_active Abandoned
- 2000-11-27 US US10/148,502 patent/US6718501B1/en not_active Expired - Lifetime
- 2000-11-27 WO PCT/IL2000/000792 patent/WO2001041130A2/en not_active Application Discontinuation
- 2000-11-27 EP EP00979901A patent/EP1245025A4/en not_active Withdrawn
- 2000-11-27 BR BR0016182-9A patent/BR0016182A/pt not_active IP Right Cessation
- 2000-11-27 DE DE10084721T patent/DE10084721B4/de not_active Expired - Fee Related
- 2000-11-27 GB GB0129682A patent/GB2371916B/en not_active Expired - Fee Related
- 2000-11-27 KR KR1020027006898A patent/KR100701236B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR100701236B1 (ko) | 2007-03-29 |
GB0129682D0 (en) | 2002-01-30 |
DE10084721B4 (de) | 2004-11-25 |
US6718501B1 (en) | 2004-04-06 |
WO2001041130A3 (en) | 2002-02-21 |
BR0016182A (pt) | 2002-08-27 |
KR20030024657A (ko) | 2003-03-26 |
DE10084721T1 (de) | 2003-08-21 |
JP2003535420A (ja) | 2003-11-25 |
IL133236A0 (en) | 2001-03-19 |
EP1245025A2 (en) | 2002-10-02 |
AU1727701A (en) | 2001-06-12 |
GB2371916B (en) | 2004-06-16 |
WO2001041130A2 (en) | 2001-06-07 |
EP1245025A4 (en) | 2006-06-07 |
GB2371916A (en) | 2002-08-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or rights | ||
FG | Grant or registration | ||
GB | Transfer or rights | ||
HC | Change of company name or juridical status |