DK255484A - Noeglesignalkryptografering - Google Patents

Noeglesignalkryptografering Download PDF

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Publication number
DK255484A
DK255484A DK255484A DK255484A DK255484A DK 255484 A DK255484 A DK 255484A DK 255484 A DK255484 A DK 255484A DK 255484 A DK255484 A DK 255484A DK 255484 A DK255484 A DK 255484A
Authority
DK
Denmark
Prior art keywords
encryptography
signal
signal encryptography
Prior art date
Application number
DK255484A
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English (en)
Other versions
DK167332B1 (da
DK255484D0 (da
Inventor
Klein S Gilhousen
Jr Charles F Newby
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23982554&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK255484(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ma Com Linkabit Inc filed Critical Ma Com Linkabit Inc
Publication of DK255484D0 publication Critical patent/DK255484D0/da
Publication of DK255484A publication Critical patent/DK255484A/da
Application granted granted Critical
Publication of DK167332B1 publication Critical patent/DK167332B1/da

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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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Selective Calling Equipment (AREA)
DK255484A 1983-05-27 1984-05-24 Noeglesignalkryptering DK167332B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/498,800 US4613901A (en) 1983-05-27 1983-05-27 Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals
US49880083 1983-05-27

Publications (3)

Publication Number Publication Date
DK255484D0 DK255484D0 (da) 1984-05-24
DK255484A true DK255484A (da) 1984-11-28
DK167332B1 DK167332B1 (da) 1993-10-11

Family

ID=23982554

Family Applications (1)

Application Number Title Priority Date Filing Date
DK255484A DK167332B1 (da) 1983-05-27 1984-05-24 Noeglesignalkryptering

Country Status (8)

Country Link
US (1) US4613901A (da)
EP (1) EP0127381B1 (da)
JP (2) JPS6057783A (da)
AU (1) AU559463B2 (da)
CA (1) CA1242793A (da)
DE (1) DE3470368D1 (da)
DK (1) DK167332B1 (da)
NO (1) NO166110C (da)

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* Cited by examiner, † Cited by third party
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NO166110C (no) 1991-05-29
DE3470368D1 (en) 1988-05-11
US4613901A (en) 1986-09-23
JPH055239B2 (da) 1993-01-21
CA1242793A (en) 1988-10-04
AU2870784A (en) 1984-11-29
AU559463B2 (en) 1987-03-12
NO166110B (no) 1991-02-18
EP0127381B1 (en) 1988-04-06
EP0127381A1 (en) 1984-12-05
DK167332B1 (da) 1993-10-11
JPH0296489A (ja) 1990-04-09
JPH056398B2 (da) 1993-01-26
DK255484D0 (da) 1984-05-24
NO842067L (no) 1984-11-28
JPS6057783A (ja) 1985-04-03

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