DK255284D0 - Systemer til at goere videosignaler forstaalige henholdsvis uforstaalige - Google Patents

Systemer til at goere videosignaler forstaalige henholdsvis uforstaalige

Info

Publication number
DK255284D0
DK255284D0 DK2552/84A DK255284A DK255284D0 DK 255284 D0 DK255284 D0 DK 255284D0 DK 2552/84 A DK2552/84 A DK 2552/84A DK 255284 A DK255284 A DK 255284A DK 255284 D0 DK255284 D0 DK 255284D0
Authority
DK
Denmark
Prior art keywords
understanding
systems
video signals
make video
make
Prior art date
Application number
DK2552/84A
Other languages
English (en)
Other versions
DK174799B1 (da
DK255284A (da
Inventor
Jerrold A Heller
Woo H Paik
Original Assignee
Ma Com Linkabit Inc
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 Ma Com Linkabit Inc filed Critical Ma Com Linkabit Inc
Publication of DK255284D0 publication Critical patent/DK255284D0/da
Publication of DK255284A publication Critical patent/DK255284A/da
Application granted granted Critical
Publication of DK174799B1 publication Critical patent/DK174799B1/da

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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
    • 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
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • 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
    • H04N7/169—Systems operating in the time domain of the television signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Television Signal Processing For Recording (AREA)
DK198402552A 1983-05-27 1984-05-24 Kodnings- og dekodningssystem til at gøre videosignaler uforståelige henholdsvis forståelige DK174799B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/498,875 US4563702A (en) 1983-05-27 1983-05-27 Video signal scrambling and descrambling systems
US49887583 1983-05-27

Publications (3)

Publication Number Publication Date
DK255284D0 true DK255284D0 (da) 1984-05-24
DK255284A DK255284A (da) 1984-11-28
DK174799B1 DK174799B1 (da) 2003-11-24

Family

ID=23982860

Family Applications (1)

Application Number Title Priority Date Filing Date
DK198402552A DK174799B1 (da) 1983-05-27 1984-05-24 Kodnings- og dekodningssystem til at gøre videosignaler uforståelige henholdsvis forståelige

Country Status (8)

Country Link
US (1) US4563702A (da)
EP (1) EP0127383B1 (da)
JP (1) JPH0789670B2 (da)
AU (1) AU561591B2 (da)
CA (1) CA1256554A (da)
DE (1) DE3474625D1 (da)
DK (1) DK174799B1 (da)
NO (1) NO164750C (da)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
WO1984004013A1 (en) * 1983-03-28 1984-10-11 Indep Broadcasting Authority Encryption of television signals
GB2143352A (en) * 1983-07-15 1985-02-06 Philips Electronic Associated Authorising coded signals
AU583131B2 (en) * 1983-12-22 1989-04-20 Frederiksen & Shu Laboratories Inc. Video transmission system using time-warp scrambling
DE3584434D1 (de) * 1984-12-17 1991-11-21 Itt Videodekodiervorrictung.
BE901468A (fr) * 1985-01-09 1985-05-02 Belge Radio Television Procede de codage et de decodage d'informations et appareil pour sa mise en oeuvre.
US4796299A (en) * 1985-08-22 1989-01-03 Itt Corporation Video encoder apparatus
GB8605014D0 (en) * 1986-02-28 1986-10-01 Int Computers Ltd Video display unit
US4736420A (en) * 1986-09-19 1988-04-05 M/A-Com Government Systems, Inc. Video scrambling by segmenting video information lines
US4719505A (en) * 1986-09-19 1988-01-12 M/A-Com Government Systems, Inc. Color burst regeneration
JP2769150B2 (ja) * 1987-03-30 1998-06-25 松下電器産業株式会社 信号処理装置
IL83549A (en) * 1987-08-16 1992-08-18 Yossi Matias Video scrambling apparatus and method based on space filling curves
DE3832611C2 (de) * 1987-09-30 1998-05-14 Thomson Brandt Gmbh Verschachtelung eines Videosignals
FR2641153B1 (da) * 1988-12-23 1991-03-01 Europ Rech Electr Lab
US5113440A (en) * 1989-07-21 1992-05-12 Oci Communcations, Inc. Universal decoder
US5058157A (en) * 1989-09-06 1991-10-15 Macrovision Corporation Method and apparatus for encrypting and decrypting time domain signals
FR2638045A1 (fr) * 1989-10-31 1990-04-20 Belloli Pascal Encodeur-decodeur video et/ou audio
US5014310A (en) * 1989-12-18 1991-05-07 General Instrument Corporation Video scrambling and descrambling by varying sequence of segments in adjacent video information lines
CH682614A5 (fr) * 1990-02-21 1993-10-15 Kudelski Sa Procédé d'embrouillage et de désembrouillage d'un signal vidéo.
CH683580A5 (fr) * 1990-02-21 1994-03-31 Kudelski Sa Procédé et dispositif d'embrouillage et de désembrouillage d'un signal vidéo.
GB9004901D0 (en) * 1990-03-05 1990-05-02 Space Communications Sat Tel L Television scrambler
FR2661585B1 (fr) * 1990-04-25 1992-08-07 Telediffusion Fse Procede et dispositif d'embrouillage-desembrouillage de donnees d'images numeriques.
US5262874A (en) * 1990-06-06 1993-11-16 Macrovision Corporation Method and apparatus for recording and replaying field-length-modulated video signals
US5091936A (en) * 1991-01-30 1992-02-25 General Instrument Corporation System for communicating television signals or a plurality of digital audio signals in a standard television line allocation
MY108367A (en) * 1991-09-30 1996-09-30 Thomson Consumer Electronics S A Method and apparatus for secure transmisson of video signals.
US5239582A (en) * 1991-11-08 1993-08-24 Macrovision Corporation Ramp generation for preventing transitions with infinite short rise time in a video scrambling system
CA2081742C (en) * 1991-11-13 2000-05-23 Anthony M. Radice Apparatus and method for recording random data on a digital video recorder
US5321748A (en) * 1992-07-02 1994-06-14 General Instrument Corporation, Jerrold Communications Method and apparatus for television signal scrambling using block shuffling
FR2716276B1 (fr) * 1994-02-16 1996-05-03 Sgs Thomson Microelectronics Circuit de réorganisation de données.
US6188869B1 (en) 1994-04-07 2001-02-13 Hark C. Chan Information distribution and processing system
US6021307A (en) 1994-04-07 2000-02-01 Chan; Hark C. Information distribution and processing system
US7991347B1 (en) 1994-04-07 2011-08-02 Data Innovation Llc System and method for accessing set of digital data at a remote site
US6473860B1 (en) 1994-04-07 2002-10-29 Hark C. Chan Information distribution and processing system
US6314574B1 (en) 1994-06-08 2001-11-06 Hark Chan Information distribution system
US6289200B1 (en) 1994-07-25 2001-09-11 Hark C. Chan Information distribution system which intermittaly transmits radio frequency signal digital data
US7181758B1 (en) * 1994-07-25 2007-02-20 Data Innovation, L.L.C. Information distribution and processing system
US5606612A (en) * 1994-07-25 1997-02-25 General Instrument Corporation, Jerrold Communications Division Method and apparatus for television signal scrambling using a line expansion technique
US5617475A (en) * 1994-11-18 1997-04-01 General Instrument Corporation, G.I. Communications Division Scrambling and descrambling of video signals using horizontal line combinations
US5815572A (en) * 1995-08-31 1998-09-29 Lucent Technologies Inc. Video scrambling
GB9704638D0 (en) * 1997-03-06 1997-04-23 Lsi Logic Corp Digital video broadcasting
US20030118186A1 (en) * 1997-10-30 2003-06-26 Gilley James E. Apparatus for and method for cipher check of an analog scrambler
US6535687B1 (en) * 1999-07-23 2003-03-18 Sarnoff Corporation Method and system for deterring electronic video piracy through image rearrangement
US7719616B2 (en) * 2004-09-17 2010-05-18 That Corporation Direct digital encoding and radio frequency modulation for broadcast television application
JP2006185016A (ja) * 2004-12-27 2006-07-13 Hitachi Ltd コンテンツ移動制御装置及び方法
CN103167260B (zh) * 2012-11-15 2016-07-06 浙江大华技术股份有限公司 音频数据的发送、接收方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872503A (en) * 1974-01-23 1975-03-18 Westinghouse Electric Corp Elimination of transients in processing segments of audio information
US4022972A (en) * 1975-05-13 1977-05-10 Teleglobe Pay Tv System Inc. Transient suppression and grey level coincidence in a subscription television system
CA1097794A (en) * 1975-08-08 1981-03-17 Harold B. Shutterly Secure television transmission system
US4221931A (en) * 1977-10-17 1980-09-09 Harris Corporation Time division multiplied speech scrambler
GB1602119A (en) * 1977-11-18 1981-11-04 Shiu Hung Cheung Pay-tv system
US4266243A (en) * 1979-04-25 1981-05-05 Westinghouse Electric Corp. Scrambling system for television sound signals
CA1182555A (en) * 1980-02-25 1985-02-12 Robert S. Block Method and system for secure transmission and reception of video information, particularly for television
US4405942A (en) * 1981-02-25 1983-09-20 Telease, Inc. Method and system for secure transmission and reception of video information, particularly for television

Also Published As

Publication number Publication date
DK174799B1 (da) 2003-11-24
DE3474625D1 (en) 1988-11-17
JPH0789670B2 (ja) 1995-09-27
DK255284A (da) 1984-11-28
CA1256554A (en) 1989-06-27
JPS59228493A (ja) 1984-12-21
EP0127383A1 (en) 1984-12-05
US4563702A (en) 1986-01-07
EP0127383B1 (en) 1988-10-12
AU2787184A (en) 1984-11-29
NO164750B (no) 1990-07-30
NO164750C (no) 1990-11-07
AU561591B2 (en) 1987-05-14
NO842066L (no) 1984-11-28

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Legal Events

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