CA986617A - Subscription television system using audio and video carrier reversal - Google Patents

Subscription television system using audio and video carrier reversal

Info

Publication number
CA986617A
CA986617A CA188362A CA188362A CA986617A CA 986617 A CA986617 A CA 986617A CA 188362 A CA188362 A CA 188362A CA 188362 A CA188362 A CA 188362A CA 986617 A CA986617 A CA 986617A
Authority
CA
Canada
Prior art keywords
audio
television system
video carrier
subscription television
reversal
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
CA188362A
Other languages
English (en)
Other versions
CA188362S (en
Inventor
Arthur R. Johnson
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.)
Oak Industries Inc
Original Assignee
Oak Industries 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
Application filed by Oak Industries Inc filed Critical Oak Industries Inc
Application granted granted Critical
Publication of CA986617A publication Critical patent/CA986617A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
CA188362A 1973-02-09 1973-12-14 Subscription television system using audio and video carrier reversal Expired CA986617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00331092A US3826863A (en) 1973-02-09 1973-02-09 Subscription television system using audio and video carrier reversal

Publications (1)

Publication Number Publication Date
CA986617A true CA986617A (en) 1976-03-30

Family

ID=23292594

Family Applications (1)

Application Number Title Priority Date Filing Date
CA188362A Expired CA986617A (en) 1973-02-09 1973-12-14 Subscription television system using audio and video carrier reversal

Country Status (7)

Country Link
US (1) US3826863A (xx)
JP (1) JPS5619789B2 (xx)
BE (1) BE809526A (xx)
CA (1) CA986617A (xx)
CH (1) CH562545A5 (xx)
FR (1) FR2217889B3 (xx)
NL (1) NL7401073A (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036152B2 (ja) * 1976-05-07 1985-08-19 パイオニア株式会社 Ｃａｔｖ用端末装置
US4130833A (en) * 1977-04-11 1978-12-19 Teleglobe Pay-Tv System, Inc. Pay television system
CA1155518A (en) * 1979-02-20 1983-10-18 William S.H. Cheung Encoding of information
US4329711A (en) * 1979-02-20 1982-05-11 Payview Limited Apparatus for encoding of information
DE3125767A1 (de) * 1980-07-05 1982-06-09 Communications Patents Ltd., London Kabelfernsehsystem
FR2502880B1 (fr) * 1981-03-24 1985-12-13 Telediffusion Fse Systeme de codage et de decodage d'un signal analogique de vision de television en couleurs
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
USRE33189E (en) * 1981-11-19 1990-03-27 Communications Satellite Corporation Security system for SSTV encryption
US4908859A (en) * 1986-09-19 1990-03-13 M/A-Com Government Systems, Inc. Receiver access interface to service components in television channel
US5621793A (en) * 1995-05-05 1997-04-15 Rubin, Bednarek & Associates, Inc. TV set top box using GPS
US6108365A (en) * 1995-05-05 2000-08-22 Philip A. Rubin And Associates, Inc. GPS data access system
US6597789B1 (en) * 1998-12-17 2003-07-22 General Instrument Corporation Video/audio scrambling with single conversion tuners

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054857A (en) * 1955-04-18 1962-09-18 Paramount Pictures Corp Secrecy system
US3527877A (en) * 1965-10-21 1970-09-08 Charger Electronic Systems Inc Coded video systems with signal phase inversion
US3730980A (en) * 1971-05-24 1973-05-01 Television Communications Corp Electronic communication apparatus for selectively distributing supplementary private programming
BE789101A (fr) * 1971-09-28 1973-01-15 Optical Systems Corp Codeur, decodeur audio pour systeme de television sur antenne collective

Also Published As

Publication number Publication date
BE809526A (fr) 1974-05-02
US3826863A (en) 1974-07-30
DE2402460A1 (de) 1974-08-15
CH562545A5 (xx) 1975-05-30
FR2217889B3 (xx) 1976-11-05
FR2217889A1 (xx) 1974-09-06
JPS49113520A (xx) 1974-10-30
DE2402460B2 (de) 1975-09-25
NL7401073A (xx) 1974-08-13
JPS5619789B2 (xx) 1981-05-09

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