JPH02500709A - ビデオカセットテープの内容の無断複製の防止方法及びその方法の実施装置 - Google Patents

ビデオカセットテープの内容の無断複製の防止方法及びその方法の実施装置

Info

Publication number
JPH02500709A
JPH02500709A JP50564387A JP50564387A JPH02500709A JP H02500709 A JPH02500709 A JP H02500709A JP 50564387 A JP50564387 A JP 50564387A JP 50564387 A JP50564387 A JP 50564387A JP H02500709 A JPH02500709 A JP H02500709A
Authority
JP
Japan
Prior art keywords
signal
video
pulse train
amplitude
unauthorized copying
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.)
Pending
Application number
JP50564387A
Other languages
English (en)
Japanese (ja)
Inventor
トゲレッツ・コニー
Original Assignee
エセルテ　ビデオ　アクティエボラグ
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
Application filed by エセルテ　ビデオ　アクティエボラグ filed Critical エセルテ　ビデオ　アクティエボラグ
Publication of JPH02500709A publication Critical patent/JPH02500709A/ja
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
JP50564387A 1986-09-24 1987-09-22 ビデオカセットテープの内容の無断複製の防止方法及びその方法の実施装置 Pending JPH02500709A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604024A SE458081B (sv) 1986-09-24 1986-09-24 Foerfarande foer att hindra obehoerig kopiering av innehaallet paa videokassettband och anordning foer genomfoerande av foerfarandet
SE8604024-3 1986-09-24

Publications (1)

Publication Number Publication Date
JPH02500709A true JPH02500709A (ja) 1990-03-08

Family

ID=20365686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50564387A Pending JPH02500709A (ja) 1986-09-24 1987-09-22 ビデオカセットテープの内容の無断複製の防止方法及びその方法の実施装置

Country Status (6)

Country Link
EP (1) EP0324755A1 (da)
JP (1) JPH02500709A (da)
AU (1) AU7962787A (da)
DK (1) DK283688A (da)
SE (1) SE458081B (da)
WO (1) WO1988002588A1 (da)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH11503282A (ja) * 1995-04-07 1999-03-23 トレヴァー フランクリン 映像信号を処理する方法及び装置
US20050111661A1 (en) 2002-02-01 2005-05-26 Arie Wijnen Anti-copy protection for a video signal
GB2387497B (en) * 2002-02-01 2004-12-08 Dwight Cavendish Systems Ltd Anti-copy protection for a video signal
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

Family Cites Families (2)

* 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
GB2055501A (en) * 1979-08-03 1981-03-04 Ivs Uk Ltd Video tape recording apparatus

Also Published As

Publication number Publication date
AU7962787A (en) 1988-04-21
SE458081B (sv) 1989-02-20
EP0324755A1 (en) 1989-07-26
DK283688D0 (da) 1988-05-24
DK283688A (da) 1988-05-24
SE8604024D0 (sv) 1986-09-24
SE8604024L (sv) 1988-03-25
WO1988002588A1 (en) 1988-04-07

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