DE221739T1 - Fernsehverschluesselungssysteme. - Google Patents

Fernsehverschluesselungssysteme.

Info

Publication number
DE221739T1
DE221739T1 DE198686308293T DE86308293T DE221739T1 DE 221739 T1 DE221739 T1 DE 221739T1 DE 198686308293 T DE198686308293 T DE 198686308293T DE 86308293 T DE86308293 T DE 86308293T DE 221739 T1 DE221739 T1 DE 221739T1
Authority
DE
Germany
Prior art keywords
encryption systems
television encryption
television
systems
encryption
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
DE198686308293T
Other languages
English (en)
Inventor
John Robert La Quinta California 92253 Us Thompson
Curtis Joseph Altadena California 91101 Us Hunting
Ronald K. Topanga California 90290 Us Masson
Craig Evan Irvine California 92714 Us Trivelpiece
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.)
PAYVIEW Ltd KOWLOON HK
Original Assignee
PAYVIEW Ltd KOWLOON HK
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 PAYVIEW Ltd KOWLOON HK filed Critical PAYVIEW Ltd KOWLOON HK
Publication of DE221739T1 publication Critical patent/DE221739T1/de
Pending 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
    • H04N7/1675—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
    • H04N7/1693—Systems operating in the time domain of the television signal by displacing synchronisation signals relative to active picture signals or vice versa
    • 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
    • H04N7/171—Systems operating in the amplitude domain of the television signal
DE198686308293T 1985-10-29 1986-10-24 Fernsehverschluesselungssysteme. Pending DE221739T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/792,704 US4716588A (en) 1985-10-29 1985-10-29 Addressable subscription television system having multiple scrambling modes

Publications (1)

Publication Number Publication Date
DE221739T1 true DE221739T1 (de) 1990-02-08

Family

ID=25157800

Family Applications (1)

Application Number Title Priority Date Filing Date
DE198686308293T Pending DE221739T1 (de) 1985-10-29 1986-10-24 Fernsehverschluesselungssysteme.

Country Status (3)

Country Link
US (1) US4716588A (de)
EP (1) EP0221739A3 (de)
DE (1) DE221739T1 (de)

Families Citing this family (44)

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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
US5014234A (en) * 1986-08-25 1991-05-07 Ncr Corporation System with software usage timer and counter for allowing limited use but preventing continued unauthorized use of protected software
US4817144A (en) * 1987-03-12 1989-03-28 Zenith Electronics Corporation Secure TV scrambling system using framing code switching
US5505901A (en) * 1988-03-10 1996-04-09 Scientific-Atlanta, Inc. CATV pay per view interdiction system method and apparatus
US5323462A (en) * 1988-03-10 1994-06-21 Scientific-Atlanta, Inc. CATV subscriber disconnect switch
US5142575A (en) * 1988-04-29 1992-08-25 Scientific-Atlanta, Inc. Method and apparatus for improving video scrambling and employing split sync pulses
US4924498A (en) * 1988-04-29 1990-05-08 Scientific Atlanta, Inc. Method and apparatus for improving video scrambling and employing split snyc pulses
MX172482B (es) * 1988-04-29 1993-12-17 Scientific Atlanta Controlador en banda
US5058160A (en) * 1988-04-29 1991-10-15 Scientific-Atlanta, Inc. In-band controller
US4926477A (en) * 1988-06-14 1990-05-15 General Instrument Corporation Cable television descrambler
US4951315A (en) * 1988-12-30 1990-08-21 Switsen Henry N Video signal noise evaluation and removal circuit
US5177787A (en) * 1989-05-01 1993-01-05 Scientific-Atlanta, Inc Scrambler with self-calibration
US5113440A (en) * 1989-07-21 1992-05-12 Oci Communcations, Inc. Universal decoder
FR2638045A1 (fr) * 1989-10-31 1990-04-20 Belloli Pascal Encodeur-decodeur video et/ou audio
US5272751A (en) * 1990-03-30 1993-12-21 Matsushita Electric Industrial Co., Ltd. Pay television
US5003592A (en) * 1990-04-05 1991-03-26 Pires H George Scrambling video by time shifting
US5680151A (en) * 1990-06-12 1997-10-21 Radius Inc. Method and apparatus for transmitting video, data over a computer bus using block transfers
US5166976A (en) * 1990-08-06 1992-11-24 Nec Home Electronics, Ltd. System and method for detection of a pulse within a video signal
US5091938B1 (en) * 1990-08-06 1997-02-04 Nippon Denki Home Electronics Digital data cryptographic system
US5144664A (en) * 1990-11-16 1992-09-01 General Instrument Corporation Apparatus and method for upgrading terminals to maintain a secure communication network
US5245420A (en) * 1990-11-27 1993-09-14 Scientific-Atlanta, Inc. CATV pay per view interdiction system
US5331412A (en) * 1990-11-27 1994-07-19 Scientific-Atlanta, Inc. Tamper resistant apparatus for a CATV system
US5155767A (en) * 1991-11-12 1992-10-13 Noller Robert R Method and apparatus for manufacturing pre-recorded videotape programs
US5321748A (en) * 1992-07-02 1994-06-14 General Instrument Corporation, Jerrold Communications Method and apparatus for television signal scrambling using block shuffling
US5583936A (en) * 1993-05-17 1996-12-10 Macrovision Corporation Video copy protection process enhancement to introduce horizontal and vertical picture distortions
US5369703A (en) * 1993-06-03 1994-11-29 At&T Corp. Command and control signalling method and apparatus
US5491748A (en) * 1994-03-01 1996-02-13 Zenith Electronics Corporation Enhanced security for a cable 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
US5539823A (en) * 1994-07-27 1996-07-23 General Instrument Corporation Of Delaware Subscription television picture scrambling and descrambling system providing compatibility with different such systems
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
US6980653B1 (en) * 1995-07-21 2005-12-27 Sony Corporation Signal reproducing/recording/transmitting method and apparatus and signal record medium
US7065211B1 (en) * 1995-07-21 2006-06-20 Sony Corporation Signal reproducing/recording/transmitting method and apparatus and signal recording medium
US5815572A (en) * 1995-08-31 1998-09-29 Lucent Technologies Inc. Video scrambling
US6075863A (en) * 1996-02-28 2000-06-13 Encanto Networks Intelligent communication device
KR0178756B1 (ko) * 1996-06-29 1999-04-15 김광호 셔플을 위한 최적의 메모리 제어방법 및 그 장치
US5850443A (en) * 1996-08-15 1998-12-15 Entrust Technologies, Ltd. Key management system for mixed-trust environments
BR9813624B1 (pt) * 1997-12-16 2014-03-11 Macrovision Corp Método e aparelho para sinais de sobreposição horizontal e vertical aperfeiçoados para maior ocultação em aparelhos de tv modernos
US6424716B1 (en) * 1998-12-15 2002-07-23 Macrovision Corp. Method and apparatus for improved horizontal and vertical overlay signals for greater concealment in modern TV sets
US6584587B1 (en) * 1999-10-14 2003-06-24 Sony Corporation Watchdog method and apparatus
JP3888422B2 (ja) * 2001-04-04 2007-03-07 日本電気株式会社 映像データ転送制御システム及び映像データ転送制御方法
US7398008B2 (en) * 2002-09-19 2008-07-08 Hewlett-Packard Development Company, L.P. Copy protection for analog video signals from computing devices
FR2845854B1 (fr) * 2002-10-11 2005-01-14 Thomson Licensing Sa Desactivation a distance de decodeurs d'acces a des donnees numeriques multimedia

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1068881A (en) * 1964-04-07 1967-05-17 R & R Res Ltd Improvements in and relating to television apparatus
US3485941A (en) * 1965-04-12 1969-12-23 R & R Research Ltd Television system with modified sync signals and auxiliary timing information
US3801732A (en) * 1971-11-22 1974-04-02 J Reeves Method and apparatus for scrambled television
US4075660A (en) * 1972-02-18 1978-02-21 Teleglobe Pay-Tv System, Inc. Pay television system with synchronization suppression
US4045814A (en) * 1973-08-15 1977-08-30 System Development Corporation Method and apparatus for scrambling and unscrambling communication signals
US4278837A (en) * 1977-10-31 1981-07-14 Best Robert M Crypto microprocessor for executing enciphered programs
US4325078A (en) * 1978-12-14 1982-04-13 The Telemine Company, Inc. Pay per view television control device
CA1155518A (en) * 1979-02-20 1983-10-18 William S.H. Cheung Encoding of information
US4454544A (en) * 1980-01-15 1984-06-12 Rca Corporation TV Privacy system using gray sync
US4389671A (en) * 1980-09-29 1983-06-21 Harris Corporation Digitally-controlled analog encrypton
JPS5769984A (en) * 1980-10-21 1982-04-30 Marantz Japan Inc Scramble system for television signal
US4471380A (en) * 1982-03-15 1984-09-11 Scientific-Atlanta, Inc. Scrambling and descrambling of television signals for subscription TV
US4575755A (en) * 1982-12-14 1986-03-11 Tocom, Inc. Video encoder/decoder system
JPS59154887A (ja) * 1983-02-23 1984-09-03 Sony Corp 映像信号受信装置
JPS59188289A (ja) * 1983-04-08 1984-10-25 Pioneer Electronic Corp Ｃａｔｖシステムにおけるスクランブル方式

Also Published As

Publication number Publication date
EP0221739A3 (de) 1989-08-16
US4716588A (en) 1987-12-29
EP0221739A2 (de) 1987-05-13

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