BR8405175A - Dispositivo de protecao de fitas magneticas ou suportes de informacao video - Google Patents

Dispositivo de protecao de fitas magneticas ou suportes de informacao video

Info

Publication number
BR8405175A
BR8405175A BR8405175A BR8405175A BR8405175A BR 8405175 A BR8405175 A BR 8405175A BR 8405175 A BR8405175 A BR 8405175A BR 8405175 A BR8405175 A BR 8405175A BR 8405175 A BR8405175 A BR 8405175A
Authority
BR
Brazil
Prior art keywords
protection device
video information
magnetic tapes
information supports
supports
Prior art date
Application number
BR8405175A
Other languages
English (en)
Portuguese (pt)
Inventor
Jacques Pierre Picard
Claude Alain Daguillon
Original Assignee
Sisex Soc Int Servic Export
Sep Spec Elect Physiques
Rim Rech Integrees Marketing
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 Sisex Soc Int Servic Export, Sep Spec Elect Physiques, Rim Rech Integrees Marketing filed Critical Sisex Soc Int Servic Export
Publication of BR8405175A publication Critical patent/BR8405175A/pt

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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00688—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
    • 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
    • H04N2005/91321—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 copy protection control signal, e.g. a record inhibit signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
BR8405175A 1983-02-09 1984-02-09 Dispositivo de protecao de fitas magneticas ou suportes de informacao video BR8405175A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8302355A FR2540659A1 (fr) 1983-02-09 1983-02-09 Dispositif de protection de bandes magnetiques, ou autres supports d'enregistrement, ou d'emission de television ou de radio contre la lecture et/ou la reproduction non autorisees
PCT/FR1984/000029 WO1984003166A1 (fr) 1983-02-09 1984-02-09 Dispositif de protection de bandes magnetiques, ou autres supports d'enregistrement, ou d'emissions de television ou de radio contre la lecture et/ou la reproduction non autorisees

Publications (1)

Publication Number Publication Date
BR8405175A true BR8405175A (pt) 1985-02-12

Family

ID=9285894

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8405175A BR8405175A (pt) 1983-02-09 1984-02-09 Dispositivo de protecao de fitas magneticas ou suportes de informacao video

Country Status (6)

Country Link
EP (1) EP0137801A1 (fr)
JP (1) JPS60500835A (fr)
BR (1) BR8405175A (fr)
DK (1) DK482984A (fr)
FR (1) FR2540659A1 (fr)
WO (1) WO1984003166A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142765A (en) * 1983-07-04 1985-01-23 John William Hawkins Preventing unauthorised use of recorded information
WO1985002293A1 (fr) * 1983-11-21 1985-05-23 Haute Securite Video Hsv S.A. Procede et dispositif anti-piraterie pour supports d'images cinematographiques et video
KR930008167B1 (ko) * 1986-08-11 1993-08-26 매크로비젼 코포레이션 비데오 레코더의 비데오 디스에이블링 회로를 이용하여 비데오 프로그램의 복사를 방지하는 방법 및 장치
US5371795A (en) * 1988-05-04 1994-12-06 Right Hemisphere Pty., Ltd. Automatic censorship of video programs
WO1989011199A1 (fr) * 1988-05-04 1989-11-16 Vogel Peter S Censure automatique de programmes diffuses
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439113A (en) * 1963-11-15 1969-04-15 Teleglobe Pay Tv System Inc Subscription television communication system
US4185305A (en) * 1974-03-04 1980-01-22 Bell & Howell Company Video information recording and reproducing methods and apparatus
US4030128A (en) * 1974-11-21 1977-06-14 Bell & Howell Company Video record scrambling and unscrambling
AU5706180A (en) * 1979-04-11 1980-10-16 John Anthony Dimmers Video copying inhibitor
US4266243A (en) * 1979-04-25 1981-05-05 Westinghouse Electric Corp. Scrambling system for television sound signals
US4404603A (en) * 1980-05-27 1983-09-13 Warren Eugene D Apparatus and method for inspecting magnetic tape recorded material for alterations

Also Published As

Publication number Publication date
DK482984D0 (da) 1984-10-09
EP0137801A1 (fr) 1985-04-24
DK482984A (da) 1984-10-09
WO1984003166A1 (fr) 1984-08-16
FR2540659A1 (fr) 1984-08-10
JPS60500835A (ja) 1985-05-30

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