GB834216A - Subscription television encoding apparatus - Google Patents

Subscription television encoding apparatus

Info

Publication number
GB834216A
GB834216A GB3186/56A GB318656A GB834216A GB 834216 A GB834216 A GB 834216A GB 3186/56 A GB3186/56 A GB 3186/56A GB 318656 A GB318656 A GB 318656A GB 834216 A GB834216 A GB 834216A
Authority
GB
United Kingdom
Prior art keywords
discs
members
shaft
indexing
disc
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
Application number
GB3186/56A
Other languages
English (en)
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
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 Zenith Radio Corp filed Critical Zenith Radio Corp
Publication of GB834216A publication Critical patent/GB834216A/en
Expired 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
    • H04N7/161—Constructional details of the subscriber equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Transceivers (AREA)
  • Switches With Compound Operations (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
GB3186/56A 1955-02-23 1956-02-01 Subscription television encoding apparatus Expired GB834216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490078A US2980901A (en) 1955-02-23 1955-02-23 Subscription television encoding apparatus

Publications (1)

Publication Number Publication Date
GB834216A true GB834216A (en) 1960-05-04

Family

ID=23946539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3186/56A Expired GB834216A (en) 1955-02-23 1956-02-01 Subscription television encoding apparatus

Country Status (6)

Country Link
US (1) US2980901A (https=)
BE (1) BE545469A (https=)
CH (1) CH350322A (https=)
DE (1) DE1051899B (https=)
FR (1) FR1148582A (https=)
GB (1) GB834216A (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943308A (en) * 1973-08-18 1976-03-09 Becker Flugfunwerk Gmbh Control for navigation receivers, radio compasses, radio, and aircraft telephony, transponders and the like
US4013847A (en) * 1975-07-24 1977-03-22 Westinghouse Electric Corporation No-load tap changer switch with rack and pinion gear operating mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039568A (en) * 1932-04-27 1936-05-05 Richards Wilcox Mfg Co Elevator signal apparatus
US2121584A (en) * 1934-03-16 1938-06-21 Lothar A Ederer Electrical set-up mechanism
US2270439A (en) * 1939-02-09 1942-01-20 George T Hosking Combination lock with electrical switch control
US2320150A (en) * 1940-07-09 1943-05-25 William R Lockridge Code selective apparatus
US2267936A (en) * 1940-07-27 1941-12-30 Bell Telephone Labor Inc Impulse code converter
US2495162A (en) * 1946-06-20 1950-01-17 Woodward Governor Co Follow-up mechanism

Also Published As

Publication number Publication date
BE545469A (https=)
FR1148582A (fr) 1957-12-11
DE1051899B (de) 1959-03-05
CH350322A (de) 1960-11-30
US2980901A (en) 1961-04-18

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