ES2044937T3 - Metodo y aparato para impedir la copia de un programa de video. - Google Patents

Metodo y aparato para impedir la copia de un programa de video.

Info

Publication number
ES2044937T3
ES2044937T3 ES87306898T ES87306898T ES2044937T3 ES 2044937 T3 ES2044937 T3 ES 2044937T3 ES 87306898 T ES87306898 T ES 87306898T ES 87306898 T ES87306898 T ES 87306898T ES 2044937 T3 ES2044937 T3 ES 2044937T3
Authority
ES
Spain
Prior art keywords
signal
modified
blanking interval
modified signal
sync
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
ES87306898T
Other languages
English (en)
Other versions
ES2044937T5 (es
Inventor
John O Ryan
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27129101&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2044937(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Macrovision Corp filed Critical Macrovision Corp
Application granted granted Critical
Publication of ES2044937T3 publication Critical patent/ES2044937T3/es
Publication of ES2044937T5 publication Critical patent/ES2044937T5/es
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
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00702—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are recorded on the recording medium
    • 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
    • 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
    • G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
    • G11B27/028—Electronic editing of analogue information signals, e.g. audio or video signals with computer assistance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/40—Combinations of multiple record carriers
    • G11B2220/45—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup
    • G11B2220/455—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G11B2220/91—Helical scan format, wherein tracks are slightly tilted with respect to tape direction, e.g. VHS, DAT, DVC, AIT or exabyte
    • 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
    • G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
    • G11B27/024—Electronic editing of analogue information signals, e.g. audio or video signals on tapes
    • 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
    • H04N2005/91314—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 pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Facsimiles In General (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Storage Device Security (AREA)

Abstract

UNA SEÑAL DE VIDEO SE MODIFICA DE FORMA QUE UN RECEPTOR DE TELEVISION SUMINISTRARA TODAVIA UNA IMAGEN DE COLOR NORMAL PERO EL GRABADOR DE VIDEO DETECTARA Y PROHIBIRA SU GRABADO. UNA DIVERSIDAD DE PARES ORDENADOS DE PSEUDOSINCRONIZACION Y PULSOS POSITIVOS SE AÑADEN AL INTERVALO VERTICAL VIRGEN DE LA SEÑAL DE VIDEO SIGUIENTE AL PULSO SINCRONIZADO NORMAL. UN CIRCUITO DE INCAPACITACION (22) EN UN GRABADOR DE VIDEO (10) DETECTA LA SEÑAL MODIFICADA. ESTA DETECCION PUEDE SER POR COMPARACION DE LA DIFERENCIA DE POTENCIAL ENTRE LA PUNTA DEL PULSO PSEUDOSINCRONIZADO Y DE PULSO POSITIVO RELATIVO A LA DIFERENCIA DE POTENCIAL NORMAL ENTRE LA PUNTA DEL PULSO SINCRONIZADO Y LA ENTRADA TRASERA DEL INTERVALO VIRGEN. ALTERNATIVAMENTE, LA SEÑAL MODIFICADA SE PUEDE DETECTAR POR LA IDENTIFICACION DE LA FRECUENCIA DE PULSO DE LA SEÑAL EN EL INTERVALO VIRGEN. UNA ALTA FRECUENCIA INDICA LA PRESENCIA DE LA SEÑAL MODIFICADA. UNA SEÑAL DE CONTROL (26) ES PRODUCIDA POR EL CIRCUITO DE INCAPACITACION (22) CUNADO LA SEÑAL MODIFICADA SE PRESENTA, Y ESTA INCAPACITA EL DISPOSITIVO DE GRABADO (20). SI LA SEÑAL NO MODIFICADA SE DETECTA, EL DISPOSITIVO DE GRABADO SE HABILITA.
ES87306898T 1986-08-11 1987-08-04 Metodo y aparato para impedir la copia de un programa de video. Expired - Lifetime ES2044937T5 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89504586A 1986-08-11 1986-08-11
US92068486A 1986-10-17 1986-10-17

Publications (2)

Publication Number Publication Date
ES2044937T3 true ES2044937T3 (es) 1994-01-16
ES2044937T5 ES2044937T5 (es) 1997-01-01

Family

ID=27129101

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87306898T Expired - Lifetime ES2044937T5 (es) 1986-08-11 1987-08-04 Metodo y aparato para impedir la copia de un programa de video.

Country Status (8)

Country Link
EP (1) EP0256753B2 (es)
JP (1) JP2881432B2 (es)
KR (1) KR930008167B1 (es)
AT (1) ATE96933T1 (es)
DE (1) DE3788020T3 (es)
ES (1) ES2044937T5 (es)
HK (1) HK1008109A1 (es)
IE (1) IE62247B1 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194965A (en) * 1983-11-23 1993-03-16 Macrovision Corporation Method and apparatus for disabling anti-copy protection system in video signals
US4937679A (en) * 1986-08-11 1990-06-26 Macrovision Dual deck video recording apparatus having enhanced copy protection and method for providing enhanced copy protection to such a recording apparatus
DE3850530T2 (de) * 1987-06-30 1994-10-27 Toshiba Kawasaki Kk System und Verfahren zur Aufnahme/Wiedergabe mit Aufnahmebeschränkungsfunktion.
JP2825258B2 (ja) * 1989-03-13 1998-11-18 株式会社東芝 ダビング制御装置
US5134496A (en) * 1989-05-26 1992-07-28 Technicolor Videocassette Of Michigan Inc. Bilateral anti-copying device for video systems
KR930006520B1 (ko) * 1991-04-19 1993-07-16 삼성전자 주식회사 복사방지 시스템
US5177618A (en) * 1990-06-29 1993-01-05 Go-Video, Inc. Dual deck vcr and duplicating circuit therefor
JP3038867B2 (ja) * 1990-10-05 2000-05-08 ソニー株式会社 テレビ受像機
JP3084796B2 (ja) * 1991-06-14 2000-09-04 ソニー株式会社 映像信号処理装置
JPH0644755A (ja) * 1992-07-24 1994-02-18 Sony Corp ビデオ信号の伝送方法及び記録装置
JP3217137B2 (ja) * 1992-07-28 2001-10-09 株式会社日立製作所 映像信号記録装置、再生装置及び伝送装置
US5315448A (en) * 1993-03-18 1994-05-24 Macrovision Corporation Copy protection for hybrid digital video tape recording and unprotected source material
JP3371187B2 (ja) * 1995-12-04 2003-01-27 ソニー株式会社 情報信号記録装置および方法、並びに情報信号複製装置および方法
JP3695016B2 (ja) * 1996-10-15 2005-09-14 ソニー株式会社 ビデオ信号処理装置及びビデオ信号処理方法
CA2283849C (en) * 1997-03-21 2002-12-10 Macrovision Corporation Method and apparatus for detecting modified color burst signals to prevent the copying of a video program
TW440819B (en) 1998-03-18 2001-06-16 Koninkl Philips Electronics Nv Copy protection schemes for copy protected digital material
CN100356475C (zh) 1999-02-26 2007-12-19 日本胜利株式会社 信息重放方法
JP2006115179A (ja) * 2004-10-14 2006-04-27 Mitsubishi Electric Corp 映像監視システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030128A (en) * 1974-11-21 1977-06-14 Bell & Howell Company Video record scrambling and unscrambling
JPS5292108A (en) * 1976-01-30 1977-08-03 Hitachi Metals Ltd Axial sliding blade type liquid rotor
JPS52114313A (en) * 1976-03-23 1977-09-26 Sony Corp Recorded medium and production method therefor
JPS6053512B2 (ja) * 1976-04-30 1985-11-26 ソニー株式会社 記録済み記録媒体
GB2104701B (en) * 1981-08-06 1985-06-05 James Bertram King Method and apparatus for preventing unauthorised recording of source material (eg, a gramophone recording)
FR2540659A1 (fr) * 1983-02-09 1984-08-10 Sisex Dispositif de protection de bandes magnetiques, ou autres supports d'enregistrement, ou d'emission de television ou de radio contre la lecture et/ou la reproduction non autorisees
EP0162071A1 (fr) * 1983-11-21 1985-11-27 Haute Securite Video Hsv S.A. Procede et dispositif anti-piraterie pour supports d'images cinematographiques et video
JPS61288672A (ja) * 1985-06-17 1986-12-18 Matsushita Electric Ind Co Ltd 映像信号の記録再生装置

Also Published As

Publication number Publication date
DE3788020T2 (de) 1994-03-03
KR930008167B1 (ko) 1993-08-26
IE872128L (en) 1988-02-11
EP0256753B2 (en) 1996-08-28
JPS63107281A (ja) 1988-05-12
IE62247B1 (en) 1995-01-11
EP0256753A2 (en) 1988-02-24
ES2044937T5 (es) 1997-01-01
KR890002865A (ko) 1989-04-11
JP2881432B2 (ja) 1999-04-12
DE3788020D1 (de) 1993-12-09
HK1008109A1 (en) 1999-04-30
EP0256753A3 (en) 1988-08-24
EP0256753B1 (en) 1993-11-03
DE3788020T3 (de) 1997-04-10
ATE96933T1 (de) 1993-11-15

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