DE69333787D1 - Verfahren und Gerät zur Erzeugung eines Mehrkanalsignal - Google Patents

Verfahren und Gerät zur Erzeugung eines Mehrkanalsignal

Info

Publication number
DE69333787D1
DE69333787D1 DE69333787T DE69333787T DE69333787D1 DE 69333787 D1 DE69333787 D1 DE 69333787D1 DE 69333787 T DE69333787 T DE 69333787T DE 69333787 T DE69333787 T DE 69333787T DE 69333787 D1 DE69333787 D1 DE 69333787D1
Authority
DE
Germany
Prior art keywords
signals
quadrature
composite baseband
disclosed
generating
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 - Fee Related
Application number
DE69333787T
Other languages
English (en)
Other versions
DE69333787T2 (de
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 DE69333787D1 publication Critical patent/DE69333787D1/de
Publication of DE69333787T2 publication Critical patent/DE69333787T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Details Of Television Systems (AREA)
  • Television Systems (AREA)
DE69333787T 1992-01-08 1993-01-07 Verfahren und Gerät zur Erzeugung eines Mehrkanalsignal Expired - Fee Related DE69333787T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81875292A 1992-01-08 1992-01-08
US818752 1992-01-08

Publications (2)

Publication Number Publication Date
DE69333787D1 true DE69333787D1 (de) 2005-05-04
DE69333787T2 DE69333787T2 (de) 2006-02-02

Family

ID=25226320

Family Applications (2)

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
DE69330946T Expired - Lifetime DE69330946D1 (de) 1992-01-08 1993-01-07 Mehrkanal-fernsehsignal ver- und entschlüsselungssystem und -verfahren

Family Applications After (1)

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

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) DE69333787T2 (de)
WO (1) WO1993014597A1 (de)

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Also Published As

Publication number Publication date
EP0622003A1 (de) 1994-11-02
AU693766B2 (en) 1998-07-09
ATE207278T1 (de) 2001-11-15
US6731757B1 (en) 2004-05-04
US6148320A (en) 2000-11-14
US7724309B2 (en) 2010-05-25
KR100269004B1 (ko) 2000-10-16
KR940704104A (ko) 1994-12-12
EP0622003A4 (de) 1994-09-08
EP0622003B1 (de) 2001-10-17
WO1993014597A1 (en) 1993-07-22
DE69330946D1 (de) 2001-11-22
US5754650A (en) 1998-05-19
US5430799A (en) 1995-07-04
DE69333787T2 (de) 2006-02-02
AU3468193A (en) 1993-08-03
US7292286B2 (en) 2007-11-06
US20090174820A1 (en) 2009-07-09
JP2004304816A (ja) 2004-10-28
US20040052370A1 (en) 2004-03-18
JPH07503111A (ja) 1995-03-30
US20080080622A1 (en) 2008-04-03
EP1553776A1 (de) 2005-07-13
EP1115248A1 (de) 2001-07-11
EP1115248B1 (de) 2005-03-30
ATE292356T1 (de) 2005-04-15

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