DE69330946D1 - Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren - Google Patents

Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren

Info

Publication number
DE69330946D1
DE69330946D1 DE69330946T DE69330946T DE69330946D1 DE 69330946 D1 DE69330946 D1 DE 69330946D1 DE 69330946 T DE69330946 T DE 69330946T DE 69330946 T DE69330946 T DE 69330946T DE 69330946 D1 DE69330946 D1 DE 69330946D1
Authority
DE
Germany
Prior art keywords
signals
television signal
encryption system
quadrature
composite baseband
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 - Lifetime
Application number
DE69330946T
Other languages
English (en)
Inventor
Ron D Katznelson
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.)
Broadband Innovations Inc
Original Assignee
Broadband Innovations 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 Broadband Innovations Inc filed Critical Broadband Innovations Inc
Application granted granted Critical
Publication of DE69330946D1 publication Critical patent/DE69330946D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • 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
    • 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
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
DE69330946T 1992-01-08 1993-01-07 Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren Expired - Lifetime DE69330946D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81875292A 1992-01-08 1992-01-08
PCT/US1993/000148 WO1993014597A1 (en) 1992-01-08 1993-01-07 Multichannel television signal scrambling and descrambling system and method

Publications (1)

Publication Number Publication Date
DE69330946D1 true DE69330946D1 (de) 2001-11-22

Family

ID=25226320

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69330946T Expired - Lifetime DE69330946D1 (de) 1992-01-08 1993-01-07 Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren
DE69333787T Expired - Fee Related DE69333787T2 (de) 1992-01-08 1993-01-07 Verfahren und Gerät zur Erzeugung eines Mehrkanalsignal

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69333787T Expired - Fee Related DE69333787T2 (de) 1992-01-08 1993-01-07 Verfahren und Gerät zur Erzeugung eines Mehrkanalsignal

Country Status (8)

Country Link
US (7) US5430799A (de)
EP (3) EP1115248B1 (de)
JP (2) JPH07503111A (de)
KR (1) KR100269004B1 (de)
AT (2) ATE207278T1 (de)
AU (1) AU693766B2 (de)
DE (2) DE69330946D1 (de)
WO (1) WO1993014597A1 (de)

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Also Published As

Publication number Publication date
JP2004304816A (ja) 2004-10-28
US20040052370A1 (en) 2004-03-18
US20090174820A1 (en) 2009-07-09
US7292286B2 (en) 2007-11-06
KR940704104A (ko) 1994-12-12
AU3468193A (en) 1993-08-03
US7724309B2 (en) 2010-05-25
DE69333787T2 (de) 2006-02-02
DE69333787D1 (de) 2005-05-04
US5754650A (en) 1998-05-19
US6148320A (en) 2000-11-14
EP0622003A4 (de) 1994-09-08
EP0622003B1 (de) 2001-10-17
WO1993014597A1 (en) 1993-07-22
EP1115248A1 (de) 2001-07-11
EP1115248B1 (de) 2005-03-30
AU693766B2 (en) 1998-07-09
US20080080622A1 (en) 2008-04-03
US5430799A (en) 1995-07-04
EP1553776A1 (de) 2005-07-13
KR100269004B1 (ko) 2000-10-16
JPH07503111A (ja) 1995-03-30
EP0622003A1 (de) 1994-11-02
ATE292356T1 (de) 2005-04-15
ATE207278T1 (de) 2001-11-15
US6731757B1 (en) 2004-05-04

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Legal Events

Date Code Title Description
8332 No legal effect for de