ES2157431T3 - Metodo y aparato para el tratamiento de una señal de video. - Google Patents

Metodo y aparato para el tratamiento de una señal de video.

Info

Publication number
ES2157431T3
ES2157431T3 ES96907945T ES96907945T ES2157431T3 ES 2157431 T3 ES2157431 T3 ES 2157431T3 ES 96907945 T ES96907945 T ES 96907945T ES 96907945 T ES96907945 T ES 96907945T ES 2157431 T3 ES2157431 T3 ES 2157431T3
Authority
ES
Spain
Prior art keywords
video signal
information portion
pulses
color burst
pulse signal
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
ES96907945T
Other languages
English (en)
Inventor
Trevor Franklin
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.)
Individual
Original Assignee
Individual
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 AUPN2270A external-priority patent/AUPN227095A0/en
Priority claimed from AUPN2499A external-priority patent/AUPN249995A0/en
Priority claimed from AUPN5424A external-priority patent/AUPN542495A0/en
Priority claimed from AUPN6145A external-priority patent/AUPN614595A0/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of ES2157431T3 publication Critical patent/ES2157431T3/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
    • G11B20/02—Analogue recording or reproducing
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • 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

Abstract

UN METODO PARA EL TRATAMIENTO DE UNA SEÑAL DE VIDEO PARA PERMITIR LA REPRODUCCION EN UN GRABADOR DE CASETES DE VIDEO (VCR) PERO NO PERMITIR LA COPIA USANDO UN VCR CON UN CONTROL DE AMPLIFICACION AUTOMATICO (AGC) CUANDO SE GRABA. EL METODO IMPLICA INSERTAR UNO O MAS IMPULSOS (22) EN EL UMBRAL POSTERIOR (45) DURANTE EL INTERVALO DE BORRADO HORIZONTAL Y ATENUAR LAS ULTIMAS LINEAS (24) DE LA PARTE DE INFORMACION DE LA IMAGEN (16) E INFORMACION DE SINCRONIZACION HORIZONTAL (18) AL FINAL DE CADA IMAGEN ALTERNA. LOS IMPULSOS (22) COMPRENDEN UNA SEÑAL DE IMPULSO (44) INSERTADA EN LA PARTE DE INFORMACION DE LA SEÑAL DE SINCRONISMO DE COLOR (34), UNA SEÑAL DE IMPULSO OPUESTA (45) CON UNA MAGNITUD SUFICIENTE PARA CONTRARRESTAR EL CAMBIO EN EL NIVEL DE DC DE LA PARTE DE LA SEÑAL DE SINCRONISMO DE COLOR (34) CAUSADA POR LA SEÑAL DE IMPULSO (44), Y UN IMPULSO ADICIONAL (50) INSERTADO EN ALGUNA PARTE DESDE LA ULTIMA MITAD DEL RESTO DE LA ENTRADA DE ATRAS (45) HASTA EL FINAL DEL COMIENZO DE LA PARTE DE INFORMACION DE LA IMAGEN (16). POR CONSIGUIENTE, EL NIVEL DE DC DE LA PARTE DE INFORMACION DE LA SEÑAL DE SINCRONISMO DE COLOR (34) SIEMPRE SE MANTIENE AL MISMO NIVEL QUE TENIA ANTES DE LA INSERCION DE LOS IMPULSOS (20). TAMBIEN SE REVELA UN CODIFICADOR PARTICULAR (52) JUNTO CON UN METODO Y APARATO (101) PARA DESCODIFICAR UNA SEÑAL DE VIDEO TRATADA DE LA FORMA ANTES MENCIONADA PARA RECUPERAR LA SEÑAL DE VIDEO ORIGINAL.
ES96907945T 1995-04-07 1996-04-04 Metodo y aparato para el tratamiento de una señal de video. Expired - Lifetime ES2157431T3 (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPN2270A AUPN227095A0 (en) 1995-04-07 1995-04-07 Video signal processor for preventing VTR recording and a method pertaining thereto
AUPN2499A AUPN249995A0 (en) 1995-04-21 1995-04-21 A method of removing signals encoded with "video signal processor for preventing vtr recording and a method pertaining thereto"
AUPN5424A AUPN542495A0 (en) 1995-09-14 1995-09-14 Video signal processor for preventing vtr recording and a method pertaining thereto
AUPN6145A AUPN614595A0 (en) 1995-10-25 1995-10-25 Video signal processor for preventing vtr recording and a method pertaining thereto

Publications (1)

Publication Number Publication Date
ES2157431T3 true ES2157431T3 (es) 2001-08-16

Family

ID=27424393

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96907945T Expired - Lifetime ES2157431T3 (es) 1995-04-07 1996-04-04 Metodo y aparato para el tratamiento de una señal de video.

Country Status (17)

Country Link
US (1) US6404974B1 (es)
EP (1) EP0819306B1 (es)
JP (1) JPH11503282A (es)
KR (1) KR19980703544A (es)
CN (1) CN1181156A (es)
AT (1) ATE199607T1 (es)
AU (1) AU709667B2 (es)
BR (1) BR9604840A (es)
CA (1) CA2217560A1 (es)
DE (1) DE69611993T2 (es)
EA (1) EA001026B1 (es)
ES (1) ES2157431T3 (es)
MX (1) MX9707725A (es)
MY (1) MY135799A (es)
NZ (1) NZ304236A (es)
TW (1) TW331693B (es)
WO (1) WO1996031878A1 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997042755A1 (en) * 1996-05-08 1997-11-13 Macrovision Corporation Method and apparatus for modifications made to a video signal to inhibit the making of acceptable videotape recordings
KR19990018064A (ko) * 1997-08-26 1999-03-15 윤종용 영상 디스플레이 시스템에서의 수평 동기신호 펄스폭 변조장치
DE69919365T2 (de) * 1998-09-02 2005-09-08 Macrovision Corp., Santa Clara Verfahren und anlage zum herstellen und unwirksam machen von videokopierschutzsignalen
AUPQ363299A0 (en) * 1999-10-25 1999-11-18 Silverbrook Research Pty Ltd Paper based information inter face
GB2396767B8 (en) * 2002-02-01 2005-03-15 Dwight Cavendish Systems Ltd Anti-copy protection for a video signal
US20050111661A1 (en) 2002-02-01 2005-05-26 Arie Wijnen Anti-copy protection for a video signal
US20030159049A1 (en) * 2002-02-21 2003-08-21 Koninklijke Philips Electronics N.V. Copy-protection by alteration of control signals
GB2390247B (en) 2002-06-28 2006-04-12 Dwight Cavendish Systems Ltd An improved method and apparatus for providing an anti-copy video signal
GB0312985D0 (en) 2003-06-05 2003-07-09 Dwight Cavendish Systems Ltd Digital processing disruption systems
GB2419220B (en) 2004-10-13 2009-06-03 Dwight Cavendish Systems Ltd Audio copy protection system
WO2006050009A1 (en) * 2004-10-28 2006-05-11 Macrovision Corporation Content management for high definition television
CN100433819C (zh) * 2004-12-28 2008-11-12 河海大学常州校区 对模拟视频信号进行加扰处理的方法及加扰电路
US7792293B2 (en) * 2005-05-06 2010-09-07 Rovi Solutions Corporation Method and apparatus for modifying a subsequently generated control command in a content control system
GB0513051D0 (en) * 2005-06-27 2005-08-03 Dwight Cavendish Systems Ltd Copy protection method and apparatus
KR20080039160A (ko) * 2006-10-31 2008-05-07 삼성전자주식회사 디스플레이장치 및 그 제어방법
US20080309816A1 (en) * 2007-06-15 2008-12-18 Macrovision Corporation Television content control system and method with cross-platform capability

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114313A (en) * 1976-03-23 1977-09-26 Sony Corp Recorded medium and production method therefor
FR2549322B1 (fr) 1983-07-11 1985-10-25 Radiotechnique Procede de mise en forme par echantillonnage d'un signal numerique, et dispositif correspondant
FR2549332B1 (fr) * 1983-07-12 1989-03-17 Labo Cent Telecommunicat Procede et dispositif pour empecher l'enregistrement non autorise d'un signal video de television
US4819098A (en) * 1983-11-23 1989-04-04 Macrovision Corporation Method and apparatus for clustering modifications made to a video signal to inhibit the making of acceptable videotape recordings
US5194965A (en) * 1983-11-23 1993-03-16 Macrovision Corporation Method and apparatus for disabling anti-copy protection system in video signals
NL8500515A (nl) * 1985-02-22 1986-09-16 Arie Marinus Wijnen Werkwijze en toestel voor het beveiligen van beeldsignalen.
US4631603A (en) * 1985-04-17 1986-12-23 Macrovision Method and apparatus for processing a video signal so as to prohibit the making of acceptable video tape recordings thereof
SE458081B (sv) * 1986-09-24 1989-02-20 Conny Togeretz Foerfarande foer att hindra obehoerig kopiering av innehaallet paa videokassettband och anordning foer genomfoerande av foerfarandet
EP0301504B1 (en) * 1987-07-29 1996-09-25 Scitec Corporation Method of copy protecting a pre-recorded videotape
NL9000951A (nl) 1990-04-20 1991-11-18 Copyguard Enterprises Werkwijze en toestel voor het verhinderen van het onrechtmatig op band overnemen van beeldsignalen.
US5583936A (en) * 1993-05-17 1996-12-10 Macrovision Corporation Video copy protection process enhancement to introduce horizontal and vertical picture distortions

Also Published As

Publication number Publication date
DE69611993D1 (de) 2001-04-12
EP0819306B1 (en) 2001-03-07
DE69611993T2 (de) 2002-02-28
MY135799A (en) 2008-06-30
WO1996031878A1 (en) 1996-10-10
MX9707725A (es) 1997-12-31
EP0819306A4 (en) 1999-06-16
BR9604840A (pt) 1998-06-16
AU5137796A (en) 1996-10-23
US6404974B1 (en) 2002-06-11
EP0819306A1 (en) 1998-01-21
KR19980703544A (ko) 1998-11-05
EA199700303A1 (ru) 1998-04-30
CN1181156A (zh) 1998-05-06
EA001026B1 (ru) 2000-08-28
NZ304236A (en) 1999-03-29
TW331693B (en) 1998-05-11
AU709667B2 (en) 1999-09-02
JPH11503282A (ja) 1999-03-23
ATE199607T1 (de) 2001-03-15
CA2217560A1 (en) 1996-10-10

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