AT185225T - Improvement of a process for video copy protection for introducing horizontal and vertical image distortion - Google Patents

Improvement of a process for video copy protection for introducing horizontal and vertical image distortion

Info

Publication number
AT185225T
AT185225T AT94919117T AT94919117T AT185225T AT 185225 T AT185225 T AT 185225T AT 94919117 T AT94919117 T AT 94919117T AT 94919117 T AT94919117 T AT 94919117T AT 185225 T AT185225 T AT 185225T
Authority
AT
Austria
Prior art keywords
improvement
process
copy protection
image distortion
vertical image
Prior art date
Application number
AT94919117T
Other languages
German (de)
Inventor
Peter J Wonfor
Alistair J Knox
Jeremy J Corcoran
John O Ryan
Ronald Quan
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
Priority to US08/062,866 priority Critical patent/US5583936A/en
Application filed by Macrovision Corp filed Critical Macrovision Corp
Publication of AT185225T publication Critical patent/AT185225T/en
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=AT185225(T) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/167Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171Systems operating in the amplitude domain of the television signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91314Television 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91371Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video color burst signal being modified
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91378Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video line number being modulated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/913Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91385Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video frame number being modulated
AT94919117T 1993-05-17 1994-05-09 Improvement of a process for video copy protection for introducing horizontal and vertical image distortion AT185225T (en)

Priority Applications (1)

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

Publications (1)

Publication Number Publication Date
AT185225T true AT185225T (en) 1999-10-15

Family

ID=22045356

Family Applications (2)

Application Number Title Priority Date Filing Date
AT94919117T AT185225T (en) 1993-05-17 1994-05-09 Improvement of a process for video copy protection for introducing horizontal and vertical image distortion
AT99104610T AT221713T (en) 1993-05-17 1994-05-09 Method and apparatus for overcoming the effects of a video copy protection process

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT99104610T AT221713T (en) 1993-05-17 1994-05-09 Method and apparatus for overcoming the effects of a video copy protection process

Country Status (21)

Country Link
US (13) US5583936A (en)
EP (3) EP0923240B1 (en)
JP (2) JP3272363B2 (en)
KR (2) KR100353565B1 (en)
CN (3) CN1078425C (en)
AT (2) AT185225T (en)
AU (1) AU7017194A (en)
BR (1) BR9406527A (en)
CA (1) CA2162367C (en)
DE (4) DE69431133D1 (en)
DK (1) DK0706740T4 (en)
EG (1) EG20806A (en)
ES (1) ES2136200T5 (en)
GR (1) GR3032183T3 (en)
HK (2) HK1013756A1 (en)
ID (5) ID19987A (en)
NZ (1) NZ267775A (en)
PL (6) PL175330B1 (en)
RU (1) RU2130237C1 (en)
TW (1) TW232110B (en)
WO (1) WO1994027406A2 (en)

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US6188832B1 (en) 1997-05-07 2001-02-13 Microvision Corp Method and apparatus for modifications made to a video signal to inhibit the making of acceptable videotape recordings
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US8428258B2 (en) * 2007-05-02 2013-04-23 Rovi Technologies Corporation Method and apparatus for providing content control via detection of modifications to a signal
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US8248532B2 (en) * 2009-01-08 2012-08-21 Rovi Solutions Corporation Method and apparatus for providing a content control signal via color burst phase modifications
US8374489B2 (en) * 2009-09-23 2013-02-12 Rovi Technologies Corporation Method and apparatus for inducing and or reducing geometric distortions in a display via positive going pulses
US20110081129A1 (en) 2009-10-07 2011-04-07 Rovi Technologies Corporation Broadband recording method and apparatus for video and/or audio programs
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Also Published As

Publication number Publication date
DE69431133T2 (en) 2003-03-06
PL174901B1 (en) 1998-10-30
DE69420964D1 (en) 1999-11-04
US5748733A (en) 1998-05-05
US6501842B2 (en) 2002-12-31
US7085380B2 (en) 2006-08-01
US5583936A (en) 1996-12-10
US20070211899A1 (en) 2007-09-13
US7620178B2 (en) 2009-11-17
ID19988A (en) 1998-09-03
EG20806A (en) 2000-03-29
GR3032183T3 (en) 2000-04-27
DK706740T3 (en)
US20010026617A1 (en) 2001-10-04
HK1013756A1 (en) 2000-06-16
US20060045266A1 (en) 2006-03-02
US20070211898A1 (en) 2007-09-13
HK1045043A1 (en) 2005-08-19
ES2136200T3 (en) 1999-11-16
EP0923240A1 (en) 1999-06-16
CN1078425C (en) 2002-01-23
ID19989A (en) 1998-09-03
DE69420964T3 (en) 2006-09-14
KR100397122B1 (en) 2003-09-06
TW232110B (en) 1994-10-11
US5625691A (en) 1997-04-29
CN1127577A (en) 1996-07-24
EP0923241B1 (en) 2002-07-31
JPH09502575A (en) 1997-03-11
DK0706740T3 (en) 2000-04-10
PL311704A1 (en) 1996-03-04
ES2136200T5 (en) 2006-03-01
NZ267775A (en) 1997-10-24
CN1348308A (en) 2002-05-08
EP0923241A2 (en) 1999-06-16
ID19986A (en) 1998-09-03
US20020018564A1 (en) 2002-02-14
BR9406527A (en) 1996-01-02
CN1208956C (en) 2005-06-29
KR100353565B1 (en) 2003-01-24
JPH1056611A (en) 1998-02-24
EP0706740B1 (en) 1999-09-29
JP3272363B2 (en) 2002-04-08
EP0706740A1 (en) 1996-04-17
JP3425850B2 (en) 2003-07-14
US5633927A (en) 1997-05-27
DE69420964T2 (en) 2000-04-06
US6285765B1 (en) 2001-09-04
CA2162367C (en) 2004-12-14
PL175346B1 (en) 1998-12-31
PL174624B1 (en) 1998-08-31
EP0923241A3 (en) 1999-06-23
US7706533B2 (en) 2010-04-27
AU7017194A (en) 1994-12-12
WO1994027406A2 (en) 1994-11-24
US20070206794A1 (en) 2007-09-06
AT221713T (en) 2002-08-15
ID19987A (en) 1998-09-03
PL175324B1 (en) 1998-12-31
PL174897B1 (en) 1998-10-30
DE69431133D1 (en) 2002-09-05
RU2130237C1 (en) 1999-05-10
US7352863B2 (en) 2008-04-01
US7492896B2 (en) 2009-02-17
CN1200561C (en) 2005-05-04
WO1994027406A3 (en) 1995-01-19
US20100021133A1 (en) 2010-01-28
ID19985A (en) 1998-09-03
CA2162367A1 (en) 1994-11-24
EP0923240B1 (en) 2012-11-14
PL175330B1 (en) 1998-12-31
EP0706740B2 (en) 2005-11-02
DK0706740T4 (en) 2005-12-05
US20080025696A1 (en) 2008-01-31
CN1323138A (en) 2001-11-21

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