DE69420964D1 - Verbesserung eines prozesses für videokopierschutz zum einbringen von horizontalen und vertikalen bildverzerrungen - Google Patents

Verbesserung eines prozesses für videokopierschutz zum einbringen von horizontalen und vertikalen bildverzerrungen

Info

Publication number
DE69420964D1
DE69420964D1 DE69420964T DE69420964T DE69420964D1 DE 69420964 D1 DE69420964 D1 DE 69420964D1 DE 69420964 T DE69420964 T DE 69420964T DE 69420964 T DE69420964 T DE 69420964T DE 69420964 D1 DE69420964 D1 DE 69420964D1
Authority
DE
Germany
Prior art keywords
introduction
improvement
horizontal
image distortion
copy protection
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
DE69420964T
Other languages
English (en)
Other versions
DE69420964T2 (de
DE69420964T3 (de
Inventor
Peter Wonfor
Alistair J Knox
Jeremy J Corcoran
John 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=DE69420964(D1) "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 DE69420964D1 publication Critical patent/DE69420964D1/de
Publication of DE69420964T2 publication Critical patent/DE69420964T2/de
Publication of DE69420964T3 publication Critical patent/DE69420964T3/de
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
DE69420964T 1993-05-17 1994-05-09 Verbesserung eines prozesses für videokopierschutz zum einbringen von horizontalen und vertikalen bildverzerrungen Expired - Lifetime DE69420964T3 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/062,866 US5583936A (en) 1993-05-17 1993-05-17 Video copy protection process enhancement to introduce horizontal and vertical picture distortions
US62866 1993-05-17
PCT/US1994/005088 WO1994027406A2 (en) 1993-05-17 1994-05-09 Video copy protection process enhancement to introduce horizontal and vertical picture distortions

Publications (3)

Publication Number Publication Date
DE69420964D1 true DE69420964D1 (de) 1999-11-04
DE69420964T2 DE69420964T2 (de) 2000-04-06
DE69420964T3 DE69420964T3 (de) 2006-09-14

Family

ID=22045356

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69420964T Expired - Lifetime DE69420964T3 (de) 1993-05-17 1994-05-09 Verbesserung eines prozesses für videokopierschutz zum einbringen von horizontalen und vertikalen bildverzerrungen
DE69431133T Expired - Lifetime DE69431133T2 (de) 1993-05-17 1994-05-09 Verfahren und Vorrichtung zur Überwindung der Effekte eines Videokopierschutzverfahrens

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69431133T Expired - Lifetime DE69431133T2 (de) 1993-05-17 1994-05-09 Verfahren und Vorrichtung zur Überwindung der Effekte eines Videokopierschutzverfahrens

Country Status (22)

Country Link
US (13) US5583936A (de)
EP (3) EP0923240B1 (de)
JP (2) JP3272363B2 (de)
KR (2) KR100397122B1 (de)
CN (3) CN1078425C (de)
AT (2) ATE185225T1 (de)
AU (1) AU7017194A (de)
BR (1) BR9406527A (de)
CA (1) CA2162367C (de)
DE (2) DE69420964T3 (de)
DK (1) DK0706740T4 (de)
EG (1) EG20806A (de)
ES (1) ES2136200T5 (de)
GR (1) GR3032183T3 (de)
HK (2) HK1013756A1 (de)
ID (5) ID19985A (de)
MY (1) MY112706A (de)
NZ (1) NZ267775A (de)
PL (6) PL174624B1 (de)
RU (1) RU2130237C1 (de)
TW (1) TW232110B (de)
WO (1) WO1994027406A2 (de)

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Also Published As

Publication number Publication date
EP0706740B1 (de) 1999-09-29
RU2130237C1 (ru) 1999-05-10
US20070211898A1 (en) 2007-09-13
EG20806A (en) 2000-03-29
US7620178B2 (en) 2009-11-17
DE69431133T2 (de) 2003-03-06
US7706533B2 (en) 2010-04-27
TW232110B (en) 1994-10-11
CN1127577A (zh) 1996-07-24
KR100397122B1 (ko) 2003-09-06
EP0706740A1 (de) 1996-04-17
EP0923240B1 (de) 2012-11-14
ID19989A (id) 1998-09-03
CN1200561C (zh) 2005-05-04
US20100021133A1 (en) 2010-01-28
NZ267775A (en) 1997-10-24
KR100353565B1 (ko) 2003-01-24
MY112706A (en) 2001-08-30
ID19986A (id) 1998-09-03
PL311704A1 (en) 1996-03-04
US7352863B2 (en) 2008-04-01
CN1078425C (zh) 2002-01-23
US5583936A (en) 1996-12-10
US7492896B2 (en) 2009-02-17
DK0706740T3 (da) 2000-04-10
US5748733A (en) 1998-05-05
PL174624B1 (pl) 1998-08-31
CA2162367A1 (en) 1994-11-24
CN1208956C (zh) 2005-06-29
ID19985A (id) 1998-09-03
JPH09502575A (ja) 1997-03-11
US20070206794A1 (en) 2007-09-06
DK0706740T4 (da) 2005-12-05
EP0923241A3 (de) 1999-06-23
WO1994027406A3 (en) 1995-01-19
ATE221713T1 (de) 2002-08-15
JPH1056611A (ja) 1998-02-24
EP0923241B1 (de) 2002-07-31
AU7017194A (en) 1994-12-12
EP0923240A1 (de) 1999-06-16
EP0706740B2 (de) 2005-11-02
WO1994027406A2 (en) 1994-11-24
US6501842B2 (en) 2002-12-31
ES2136200T5 (es) 2006-03-01
JP3272363B2 (ja) 2002-04-08
CN1348308A (zh) 2002-05-08
HK1013756A1 (en) 1999-09-03
EP0923241A2 (de) 1999-06-16
DE69420964T2 (de) 2000-04-06
US20020018564A1 (en) 2002-02-14
US20070211899A1 (en) 2007-09-13
US5625691A (en) 1997-04-29
HK1045043B (zh) 2005-08-19
JP3425850B2 (ja) 2003-07-14
CN1323138A (zh) 2001-11-21
PL175324B1 (pl) 1998-12-31
DE69420964T3 (de) 2006-09-14
PL175330B1 (pl) 1998-12-31
US6285765B1 (en) 2001-09-04
ID19987A (id) 1998-09-03
HK1045043A1 (en) 2002-11-08
US7085380B2 (en) 2006-08-01
PL175346B1 (pl) 1998-12-31
CA2162367C (en) 2004-12-14
ATE185225T1 (de) 1999-10-15
US5633927A (en) 1997-05-27
ID19988A (id) 1998-09-03
BR9406527A (pt) 1996-01-02
PL174901B1 (pl) 1998-10-30
ES2136200T3 (es) 1999-11-16
US20010026617A1 (en) 2001-10-04
DE69431133D1 (de) 2002-09-05
GR3032183T3 (en) 2000-04-27
US20080025696A1 (en) 2008-01-31
PL174897B1 (pl) 1998-10-30
US20060045266A1 (en) 2006-03-02

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