BR8405175A - MAGNETIC TAPES PROTECTION DEVICE OR VIDEO INFORMATION SUPPORTS - Google Patents

MAGNETIC TAPES PROTECTION DEVICE OR VIDEO INFORMATION SUPPORTS

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
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/en

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 MAGNETIC TAPES PROTECTION DEVICE OR VIDEO INFORMATION SUPPORTS BR8405175A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8302355A FR2540659A1 (en) 1983-02-09 1983-02-09 DEVICE FOR PROTECTING MAGNETIC TAPES, OR OTHER RECORDING MEDIA, OR TELEVISION OR RADIO TRANSMISSION AGAINST UNAUTHORIZED READING AND / OR REPRODUCTION
PCT/FR1984/000029 WO1984003166A1 (en) 1983-02-09 1984-02-09 Device for the protection of magnetic tapes, or other recording media, or television or radio broadcastings against an authorized reading and/or reproduction

Publications (1)

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

Family

ID=9285894

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8405175A BR8405175A (en) 1983-02-09 1984-02-09 MAGNETIC TAPES PROTECTION DEVICE OR VIDEO INFORMATION SUPPORTS

Country Status (6)

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

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 (en) * 1983-11-21 1985-05-23 Haute Securite Video Hsv S.A. Antipiracy device and method for cinematographic and video carriers
KR930008167B1 (en) * 1986-08-11 1993-08-26 매크로비젼 코포레이션 Method and apparatus for preventing the copying of a video program
US5371795A (en) * 1988-05-04 1994-12-06 Right Hemisphere Pty., Ltd. Automatic censorship of video programs
WO1989011199A1 (en) * 1988-05-04 1989-11-16 Vogel Peter S Automatic censorship of broadcast programmes
JPH0644755A (en) * 1992-07-24 1994-02-18 Sony Corp Method for transmitting video signal and recorder therefor

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 (en) 1984-10-09
EP0137801A1 (en) 1985-04-24
DK482984A (en) 1984-10-09
WO1984003166A1 (en) 1984-08-16
FR2540659A1 (en) 1984-08-10
JPS60500835A (en) 1985-05-30

Similar Documents

Publication Publication Date Title
ATA106383A (en) MAGNETIC TAPE RECORDER
KR880005613A (en) Limited playback tape cassette system
DE3675802D1 (en) MAGNETIC TAPE DEVICE.
TR21466A (en) MAGNETIC RECORD DEVICE
DE3484535D1 (en) MAGNETIC RECORDING AND PLAYBACK DEVICE.
DE3650146D1 (en) Magnetic playback device.
NO842698L (en) INFORMATION PROCESSING DEVICE
DE3483290D1 (en) MAGNETIC PLAYBACK DEVICE.
KR840006710A (en) Magnetic recording playback device
ATA302784A (en) MAGNETIC RECORDING AND PLAYBACK DEVICE
KR860004383A (en) Record playback device
KR840000788U (en) Recording and playback device
DE69115836D1 (en) Information playback device
KR840004807A (en) Magnetic recording playback device
DE3582041D1 (en) VIDEO TAPE RECORDING DEVICE.
KR860005547A (en) Video signal playback device
KR910006276U (en) Tape recorder
BR8405175A (en) MAGNETIC TAPES PROTECTION DEVICE OR VIDEO INFORMATION SUPPORTS
KR870006514A (en) Magnetic recording playback device
KR870002812U (en) Magnetic tape device
KR850000107A (en) Magnetic tape cassette device
DE3483640D1 (en) MAGNETIC RECORDING AND PLAYBACK DEVICE.
DE3675677D1 (en) MAGNETIC TAPE DEVICE.
KR860008546A (en) Magnetic recording playback device
KR910004871U (en) Tape recorder