GB922183A - Subscription television system - Google Patents

Subscription television system

Info

Publication number
GB922183A
GB922183A GB12409/59A GB1240959A GB922183A GB 922183 A GB922183 A GB 922183A GB 12409/59 A GB12409/59 A GB 12409/59A GB 1240959 A GB1240959 A GB 1240959A GB 922183 A GB922183 A GB 922183A
Authority
GB
United Kingdom
Prior art keywords
transmitter
signal
receiver
setting
counter
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
GB12409/59A
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.)
BRITISH TELEMETER HOME VIEWING
Original Assignee
BRITISH TELEMETER HOME VIEWING
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 BRITISH TELEMETER HOME VIEWING filed Critical BRITISH TELEMETER HOME VIEWING
Publication of GB922183A publication Critical patent/GB922183A/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
    • H04N7/167—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
    • 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
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
GB12409/59A 1958-06-16 1959-04-13 Subscription television system Expired GB922183A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US742114A US3001011A (en) 1958-06-16 1958-06-16 Subscription television system
US21937562A 1962-08-23 1962-08-23

Publications (1)

Publication Number Publication Date
GB922183A true GB922183A (en) 1963-03-27

Family

ID=26913828

Family Applications (2)

Application Number Title Priority Date Filing Date
GB12409/59A Expired GB922183A (en) 1958-06-16 1959-04-13 Subscription television system
GB2035/61A Expired GB922184A (en) 1958-06-16 1959-04-13 Subscription television system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2035/61A Expired GB922184A (en) 1958-06-16 1959-04-13 Subscription television system

Country Status (6)

Country Link
US (2) US3001011A (enExample)
JP (1) JPS523248B1 (enExample)
DE (1) DE1412135A1 (enExample)
FR (1) FR1239340A (enExample)
GB (2) GB922183A (enExample)
NL (1) NL238566A (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201511A (en) * 1960-07-20 1965-08-17 Teleglobe Pay Tv System Inc Subscription television system having keyed generation of sync signals at the receiver
US3184537A (en) * 1960-10-04 1965-05-18 Paramount Pictures Corp Subscription-television system employing suppression of synchronizing signals
US3530232A (en) * 1966-06-17 1970-09-22 Intern Telemeter Corp Subscription television system
US3601528A (en) * 1969-06-16 1971-08-24 Coaxial Scient Corp Television communications system with coding and decoding
US3896262A (en) * 1974-03-21 1975-07-22 Hughes Aircraft Co Subscription television jamming system
JPS5210817U (enExample) * 1975-07-09 1977-01-25
CA1338158C (en) * 1982-07-15 1996-03-12 John D. Lowry Encryption and decryption (scrambling and unscrambling) of video signals
US4636853A (en) * 1983-12-21 1987-01-13 Zenith Electronics Corporation Dynamic audio scrambling system
US4956862A (en) 1989-02-02 1990-09-11 General Instrument Corporation Method of providing sound privacy system compatible with mono and btsc stereo audio

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510046A (en) * 1947-04-18 1950-05-30 Zenith Radio Corp Radio-wire signaling system
US2567539A (en) * 1948-06-25 1951-09-11 Zenith Radio Corp Subscriber television system
US2769024A (en) * 1950-10-09 1956-10-30 Internat Telementer Corp Television control system
US2843655A (en) * 1951-12-03 1958-07-15 Internat Telemeter Corp Subscription television with scrambled transmission and marquee and barker
US2864885A (en) * 1951-12-08 1958-12-16 Zenith Radio Corp Subscriber television system
NL111778C (enExample) * 1952-04-09
US2875270A (en) * 1955-06-07 1959-02-24 Internat Telemeter Corp Subscription-television system
US2907816A (en) * 1958-02-21 1959-10-06 Paramount Pictures Corp Subscription television system

Also Published As

Publication number Publication date
JPS523248B1 (enExample) 1977-01-27
US3001011A (en) 1961-09-19
NL238566A (enExample) 1964-02-05
USRE27046E (en) 1971-02-02
GB922184A (en) 1963-03-27
FR1239340A (fr) 1960-08-26
DE1412135A1 (de) 1969-03-06

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