DE3474625D1 - Video signal scrambling and descrambling systems - Google Patents

Video signal scrambling and descrambling systems

Info

Publication number
DE3474625D1
DE3474625D1 DE8484303322T DE3474625T DE3474625D1 DE 3474625 D1 DE3474625 D1 DE 3474625D1 DE 8484303322 T DE8484303322 T DE 8484303322T DE 3474625 T DE3474625 T DE 3474625T DE 3474625 D1 DE3474625 D1 DE 3474625D1
Authority
DE
Germany
Prior art keywords
video signal
signal scrambling
descrambling systems
descrambling
systems
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.)
Expired
Application number
DE8484303322T
Other languages
English (en)
Inventor
Jerrold A Heller
Woo H Paik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engility LLC
Original Assignee
MA Com Government Systems Inc
Cable Home Communication 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
Application filed by MA Com Government Systems Inc, Cable Home Communication Corp filed Critical MA Com Government Systems Inc
Application granted granted Critical
Publication of DE3474625D1 publication Critical patent/DE3474625D1/de
Expired legal-status Critical Current

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)
  • Television Signal Processing For Recording (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
DE8484303322T 1983-05-27 1984-05-16 Video signal scrambling and descrambling systems Expired DE3474625D1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3474625D1 true DE3474625D1 (en) 1988-11-17

Family

ID=23982860

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484303322T Expired DE3474625D1 (en) 1983-05-27 1984-05-16 Video signal scrambling and descrambling systems

Country Status (8)

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

Families Citing this family (47)

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US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
EP0137847B1 (de) * 1983-03-28 1988-12-21 Independent Broadcasting Authority Chiffrierung von fernsehsignalen
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 (de) * 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.
US6021307A (en) * 1994-04-07 2000-02-01 Chan; Hark C. Information distribution and processing system
US6188869B1 (en) 1994-04-07 2001-02-13 Hark C. Chan 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
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
US6289200B1 (en) 1994-07-25 2001-09-11 Hark C. Chan Information distribution system which intermittaly transmits radio frequency signal digital data
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
MX2007003153A (es) * 2004-09-17 2007-06-05 That Corp Codificacion digital directa y modulacion de radiofrecuencia para aplicacion de television de radiodifusion.
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
NO842066L (no) 1984-11-28
AU2787184A (en) 1984-11-29
JPS59228493A (ja) 1984-12-21
DK174799B1 (da) 2003-11-24
DK255284A (da) 1984-11-28
US4563702A (en) 1986-01-07
JPH0789670B2 (ja) 1995-09-27
AU561591B2 (en) 1987-05-14
EP0127383B1 (de) 1988-10-12
DK255284D0 (da) 1984-05-24
NO164750B (no) 1990-07-30
NO164750C (no) 1990-11-07
CA1256554A (en) 1989-06-27
EP0127383A1 (de) 1984-12-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: TITAN LINKABIT CORP. CABLE/HOME COMMUNICATION CORP

8328 Change in the person/name/address of the agent

Free format text: KOHLER, R., DIPL.-PHYS. RUEDEL, D., DIPL.-ING. DIPL.-WIRTSCH.-ING., PAT.-ANWAELTE, 7000 STUTTGART

8127 New person/name/address of the applicant

Owner name: THE TITAN CORP. (N.D.GES.D.STAATES DELAWARE) CABLE

8328 Change in the person/name/address of the agent

Free format text: KOHLER, R., DIPL.-PHYS. SCHMID, B., DIPL.-ING. HOLZMUELLER, R., DIPL.-ING. DR.-ING. BAEHRING, A., DIPL.-PHYS. UNIV. DR.RER.NAT. RUEDEL, D., DIPL.-ING. DIPL.-WIRTSCH.-ING., PAT.-ANWAELTE, 7000 STUTTGART

8327 Change in the person/name/address of the patent owner

Owner name: GENERAL INSTRUMENT CORP. (N.D.GES.D. STAATES DELAW

8327 Change in the person/name/address of the patent owner

Owner name: THE TITAN CORP. (N.D.GES.D.STAATES DELAWARE), SAN