ES2136200T3 - Mejora del procedimiento de proteccion de copia de video para introducir distorsiones de la imagen horizontales y verticales. - Google Patents

Mejora del procedimiento de proteccion de copia de video para introducir distorsiones de la imagen horizontales y verticales.

Info

Publication number
ES2136200T3
ES2136200T3 ES94919117T ES94919117T ES2136200T3 ES 2136200 T3 ES2136200 T3 ES 2136200T3 ES 94919117 T ES94919117 T ES 94919117T ES 94919117 T ES94919117 T ES 94919117T ES 2136200 T3 ES2136200 T3 ES 2136200T3
Authority
ES
Spain
Prior art keywords
image
horizontal
video
causes
vertical
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
ES94919117T
Other languages
English (en)
Other versions
ES2136200T5 (es
Inventor
Peter J Wonfor
Alistair J Knox
Jeremy J Corcoran
John O Ryan
Ronald Quan
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=22045356&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2136200(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
Publication of ES2136200T3 publication Critical patent/ES2136200T3/es
Application granted granted Critical
Publication of ES2136200T5 publication Critical patent/ES2136200T5/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • 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
    • 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
    • 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
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91371—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video color burst signal being modified
    • 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
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91378—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video line number being modulated
    • 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
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91385—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video frame number being modulated

Abstract

MEJORAS RELATIVAS A UN PROCESO CONTRA LA COPIA DE VIDEOS QUE GENERA UNA SEÑAL DE VIDEO DE UNA AMPLITUD ANORMALMENTE BAJA A GRABAR EN UNA COPIA ILEGAL. EN UN ASPECTO DE LAS MEJORAS, SE INTRODUCE EN LA PORCION DE SOBREBARRIDO DE LA IMAGEN DE TELEVISION, JUSTO ANTES DE LAS SEÑALES DE SINCRONIZACION HORIZONTALES O VERTICALES PERO EN VIDEO ACTIVO, UNA FORMA DE ONDA DE VARIACION EN SENTIDO NEGATIVO QUE PARA EL RECEPTOR DE TELEVISION O PARA EL GRABADOR DE CINTAS DE VIDEO SE PRESENTA COMO SI FUERA UNA SEÑAL DE SINCRONIZACION, LO QUE PROVOCA UN RETORNO HORIZONTAL O VERTICAL PREMATURO. UN ASPECTO GENERA (EN LA PORCION DE SOBREBARRIDO DE LA DERECHA DE LA IMAGEN) UNA IMAGEN EN TABLERO DE AJEDREZ CON AREAS GRISES Y NEGRAS ALTERNAS QUE HACE QUE EL APARATO DE TV EN EL QUE SE ESTA REPRODUCIENDO LA COPIA ILEGAL RETORNE HORIZONTALMENTE ANTES DE LO NORMAL LINEAS SELECCIONADAS CON UN DESPLAZAMIENTO HORIZONTAL EN CONSECUENCIA DE LA INFORMACION DE IMAGEN QUE HAY SOBRE ESAS LINEAS. ESTO DEGRADA SUSTANCIALMENTE LAREPRESENTACION DE LA IMAGEN. EN OTRO ASPECTO, UNA IMAGEN GRIS EN LA PORCION DE SOBREBARRIDO INFERIOR DE LA IMAGEN PROVOCA UNA INESTABILIDAD VERTICAL DE LA IMAGEN. EN OTRO ASPECTO SE ESTRECHAN UNAS SEÑALES DE SINCRONIZACION HORIZONTALES SELECCIONADAS, LO QUE PROVOCA UN RETORNO VERTICAL IRREGULAR. TAMBIEN SE PRESENTA UN APARATO PARA ELIMINAR O ATENUAR ESTAS MEJORAS DE LA SEÑAL DE VIDEO, PARA PERMITIR LA COPIA.
ES94919117T 1993-05-17 1994-05-09 Mejora del procedimiento de proteccion de copia de video para introducir distorsiones de la imagen horizontales y verticales. Expired - Lifetime ES2136200T5 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62866 1993-05-17
US08/062,866 US5583936A (en) 1993-05-17 1993-05-17 Video copy protection process enhancement to introduce horizontal and vertical picture distortions

Publications (2)

Publication Number Publication Date
ES2136200T3 true ES2136200T3 (es) 1999-11-16
ES2136200T5 ES2136200T5 (es) 2006-03-01

Family

ID=22045356

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94919117T Expired - Lifetime ES2136200T5 (es) 1993-05-17 1994-05-09 Mejora del procedimiento de proteccion de copia de video para introducir distorsiones de la imagen horizontales y verticales.

Country Status (22)

Country Link
US (13) US5583936A (es)
EP (3) EP0923240B1 (es)
JP (2) JP3272363B2 (es)
KR (2) KR100353565B1 (es)
CN (3) CN1078425C (es)
AT (2) ATE221713T1 (es)
AU (1) AU7017194A (es)
BR (1) BR9406527A (es)
CA (1) CA2162367C (es)
DE (2) DE69420964T3 (es)
DK (1) DK0706740T4 (es)
EG (1) EG20806A (es)
ES (1) ES2136200T5 (es)
GR (1) GR3032183T3 (es)
HK (2) HK1013756A1 (es)
ID (5) ID19989A (es)
MY (1) MY112706A (es)
NZ (1) NZ267775A (es)
PL (6) PL175346B1 (es)
RU (1) RU2130237C1 (es)
TW (1) TW232110B (es)
WO (1) WO1994027406A2 (es)

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Also Published As

Publication number Publication date
EP0923240B1 (en) 2012-11-14
US7352863B2 (en) 2008-04-01
US7492896B2 (en) 2009-02-17
ATE221713T1 (de) 2002-08-15
KR100397122B1 (ko) 2003-09-06
US5583936A (en) 1996-12-10
CN1348308A (zh) 2002-05-08
EP0706740B2 (en) 2005-11-02
US5748733A (en) 1998-05-05
US20070206794A1 (en) 2007-09-06
TW232110B (en) 1994-10-11
WO1994027406A2 (en) 1994-11-24
US20010026617A1 (en) 2001-10-04
AU7017194A (en) 1994-12-12
CN1078425C (zh) 2002-01-23
US20080025696A1 (en) 2008-01-31
PL175330B1 (pl) 1998-12-31
JPH09502575A (ja) 1997-03-11
CA2162367C (en) 2004-12-14
ID19988A (id) 1998-09-03
US5633927A (en) 1997-05-27
CN1200561C (zh) 2005-05-04
ID19987A (id) 1998-09-03
ATE185225T1 (de) 1999-10-15
DE69431133T2 (de) 2003-03-06
PL175324B1 (pl) 1998-12-31
HK1013756A1 (en) 1999-09-03
ID19986A (id) 1998-09-03
EG20806A (en) 2000-03-29
JPH1056611A (ja) 1998-02-24
PL174624B1 (pl) 1998-08-31
NZ267775A (en) 1997-10-24
CN1208956C (zh) 2005-06-29
US7706533B2 (en) 2010-04-27
RU2130237C1 (ru) 1999-05-10
EP0923241B1 (en) 2002-07-31
US6285765B1 (en) 2001-09-04
DE69431133D1 (de) 2002-09-05
DK0706740T4 (da) 2005-12-05
PL311704A1 (en) 1996-03-04
HK1045043A1 (en) 2002-11-08
US6501842B2 (en) 2002-12-31
CN1127577A (zh) 1996-07-24
PL174901B1 (pl) 1998-10-30
GR3032183T3 (en) 2000-04-27
CA2162367A1 (en) 1994-11-24
EP0706740A1 (en) 1996-04-17
DE69420964T3 (de) 2006-09-14
EP0706740B1 (en) 1999-09-29
JP3425850B2 (ja) 2003-07-14
EP0923240A1 (en) 1999-06-16
WO1994027406A3 (en) 1995-01-19
BR9406527A (pt) 1996-01-02
HK1045043B (zh) 2005-08-19
US20070211899A1 (en) 2007-09-13
EP0923241A2 (en) 1999-06-16
ID19985A (id) 1998-09-03
US5625691A (en) 1997-04-29
US20100021133A1 (en) 2010-01-28
DE69420964D1 (de) 1999-11-04
ES2136200T5 (es) 2006-03-01
MY112706A (en) 2001-08-30
US20070211898A1 (en) 2007-09-13
PL175346B1 (pl) 1998-12-31
EP0923241A3 (en) 1999-06-23
PL174897B1 (pl) 1998-10-30
US20060045266A1 (en) 2006-03-02
ID19989A (id) 1998-09-03
US7620178B2 (en) 2009-11-17
US20020018564A1 (en) 2002-02-14
KR100353565B1 (ko) 2003-01-24
JP3272363B2 (ja) 2002-04-08
US7085380B2 (en) 2006-08-01
CN1323138A (zh) 2001-11-21
DK0706740T3 (da) 2000-04-10
DE69420964T2 (de) 2000-04-06

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