BE542227A - - Google Patents

Info

Publication number
BE542227A
BE542227A BE542227DA BE542227A BE 542227 A BE542227 A BE 542227A BE 542227D A BE542227D A BE 542227DA BE 542227 A BE542227 A BE 542227A
Authority
BE
Belgium
Application number
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.)
Family has litigation
Publication of BE542227A publication Critical patent/BE542227A/xx
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27040725&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BE542227(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US463702A external-priority patent/US2947804A/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
BE542227D 1954-10-21 BE542227A (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US463702A US2947804A (en) 1954-10-21 1954-10-21 Secrecy communication
US479170A US3107274A (en) 1954-10-21 1954-12-31 Subscription television

Publications (1)

Publication Number Publication Date
BE542227A true BE542227A (de)

Family

ID=27040725

Family Applications (1)

Application Number Title Priority Date Filing Date
BE542227D BE542227A (de) 1954-10-21

Country Status (7)

Country Link
US (1) US3107274A (de)
BE (1) BE542227A (de)
CH (1) CH352710A (de)
DE (1) DE1086740B (de)
FR (1) FR1137671A (de)
GB (1) GB784108A (de)
NL (1) NL112145C (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011016A (en) * 1959-06-29 1961-11-28 Zenith Radio Corp Subscription receiver
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414101A (en) * 1943-06-04 1947-01-14 Faximile Inc Graphic privacy system
US2472774A (en) * 1945-10-17 1949-06-07 Farnsworth Res Corp Irregular interlace scanning system
US2517587A (en) * 1946-12-09 1950-08-08 Bell Telephone Labor Inc Secret message transmission system
US2547598A (en) * 1947-09-13 1951-04-03 Zenith Radio Corp Subscription image transmission system and apparatus
US2656407A (en) * 1949-02-12 1953-10-20 Zenith Radio Corp Subscriber signaling system
CH281914A (de) * 1950-03-06 1952-03-31 Zenith Radio Corp Sender zur Übertragung eines chiffrierten Nachrichtensignals.
US2757226A (en) * 1950-10-23 1956-07-31 Rca Corp Secret television systems
NL112140C (de) * 1952-12-15

Also Published As

Publication number Publication date
US3107274A (en) 1963-10-15
FR1137671A (fr) 1957-06-03
DE1086740B (de) 1960-08-11
NL112145C (de)
GB784108A (en) 1957-10-02
CH352710A (de) 1961-03-15

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