FR1089289A - Système perfectionné de télévision par abonnement - Google Patents

Système perfectionné de télévision par abonnement

Info

Publication number
FR1089289A
FR1089289A FR1089289DA FR1089289A FR 1089289 A FR1089289 A FR 1089289A FR 1089289D A FR1089289D A FR 1089289DA FR 1089289 A FR1089289 A FR 1089289A
Authority
FR
France
Prior art keywords
television system
subscription television
advanced
advanced subscription
television
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
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
Application granted granted Critical
Publication of FR1089289A publication Critical patent/FR1089289A/fr
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
    • 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
    • H04N7/1693—Systems operating in the time domain of the television signal by displacing synchronisation signals relative to active picture signals or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Radio Relay Systems (AREA)
  • Television Systems (AREA)
FR1089289D 1952-12-15 1953-10-13 Système perfectionné de télévision par abonnement Expired FR1089289A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US326107A US2823252A (en) 1952-12-15 1952-12-15 Subscription television system

Publications (1)

Publication Number Publication Date
FR1089289A true FR1089289A (fr) 1955-03-16

Family

ID=23270844

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1089289D Expired FR1089289A (fr) 1952-12-15 1953-10-13 Système perfectionné de télévision par abonnement

Country Status (7)

Country Link
US (1) US2823252A (fr)
BE (1) BE523632A (fr)
CH (1) CH329224A (fr)
DE (1) DE1058096B (fr)
FR (1) FR1089289A (fr)
GB (1) GB742140A (fr)
NL (1) NL112140C (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947804A (en) * 1954-10-21 1960-08-02 Zenith Radio Corp Secrecy communication
NL112145C (fr) * 1954-10-21
US2961481A (en) * 1954-12-30 1960-11-22 Hammond Secrecy television
US4638357A (en) * 1984-01-20 1987-01-20 Home Box Office, Inc. Audio scrambler
US5402488A (en) * 1991-08-30 1995-03-28 Karlock; James A. Method and apparatus for modifying a video signal
DE102009046059A1 (de) * 2009-10-27 2011-04-28 Drescher, Ernst-Peter, Dr. Verfahren zum Betreiben einer Eingabevorrichtung, Eingabevorrichtung, Automat mit einer Eingabevorrichtung sowie Verwendung einer Eingabevorrichtung

Family Cites Families (6)

* 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
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.
GB675062A (en) * 1950-05-08 1952-07-02 Zenith Radio Corp Improvements in television receivers
US2664260A (en) * 1951-04-21 1953-12-29 Conveyor Company Inc Automatic dispensing, weighing, and recording apparatus

Also Published As

Publication number Publication date
US2823252A (en) 1958-02-11
NL112140C (fr)
GB742140A (en) 1955-12-21
DE1058096B (de) 1959-05-27
BE523632A (fr)
CH329224A (de) 1958-04-15

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