CA944059A - Electronic communication apparatus employing encripted signal distribution - Google Patents

Electronic communication apparatus employing encripted signal distribution

Info

Publication number
CA944059A
CA944059A CA133,590A CA133590A CA944059A CA 944059 A CA944059 A CA 944059A CA 133590 A CA133590 A CA 133590A CA 944059 A CA944059 A CA 944059A
Authority
CA
Canada
Prior art keywords
encripted
communication apparatus
electronic communication
signal distribution
apparatus employing
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
CA133,590A
Other languages
English (en)
Other versions
CA133590S (en
Inventor
Donald Kirk (Jr.)
Austin S. Coryell
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.)
WARNER-TVC CORP
Original Assignee
WARNER-TVC 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 WARNER-TVC CORP filed Critical WARNER-TVC CORP
Application granted granted Critical
Publication of CA944059A publication Critical patent/CA944059A/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)
  • Details Of Television Systems (AREA)
CA133,590A 1971-03-10 1972-01-31 Electronic communication apparatus employing encripted signal distribution Expired CA944059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12266071A 1971-03-10 1971-03-10

Publications (1)

Publication Number Publication Date
CA944059A true CA944059A (en) 1974-03-19

Family

ID=22404012

Family Applications (1)

Application Number Title Priority Date Filing Date
CA133,590A Expired CA944059A (en) 1971-03-10 1972-01-31 Electronic communication apparatus employing encripted signal distribution

Country Status (5)

Country Link
US (1) US3733431A (enExample)
CA (1) CA944059A (enExample)
DE (1) DE2209097A1 (enExample)
FR (1) FR2128760A1 (enExample)
GB (1) GB1343862A (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789131A (en) * 1972-08-03 1974-01-29 Oak Industries Inc Selective coding system for subscription television
US3885089A (en) * 1973-02-16 1975-05-20 Hughes Aircraft Co Television scrambling system
US3914534A (en) * 1973-10-29 1975-10-21 Magnavox Co Methods and apparatus for scrambling and unscrambling premium television channels
US4272791A (en) * 1979-03-26 1981-06-09 Rifken Jerome C Method and apparatus for video recording
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
FR2573266A1 (fr) * 1984-11-09 1986-05-16 Cedelle Paul Dispositif de decodage d'emissions de television codees, destine notamment a une installation d'antenne collective
FR2721160B1 (fr) * 1994-06-13 1996-08-14 Telediffusion Fse Procédé d'embrouillage et de désembrouillage de programmes de télévision multiplexée et dispositifs correspondants.
WO1996008111A1 (en) * 1994-09-07 1996-03-14 Yee Kong Ng Apparatus and methods for scrambling and unscrambling video signals
US5512963A (en) * 1995-01-05 1996-04-30 Mankovitz; Roy J. Apparatus and methods for providing combining multiple video sources
US5710815A (en) * 1995-06-07 1998-01-20 Vtech Communications, Ltd. Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data
US6370156B2 (en) * 1997-01-31 2002-04-09 Alcatel Modulation/demodulation of a pilot carrier, means and method to perform the modulation/demodulation
DE20007619U1 (de) * 2000-04-27 2001-08-30 Krauss-Maffei Wegmann GmbH & Co.KG, 34127 Kassel Einrichtung zur Reduktion der Antennenanzahl an einem Kampffahrzeug
WO2011075097A1 (en) * 2009-12-15 2011-06-23 Thomson Licensing Multiplexed rfagc for frequency diversity receivers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106604A (en) * 1955-01-12 1963-10-08 Skiatron Elect & Tele Multiple code subscription television system
US3054857A (en) * 1955-04-18 1962-09-18 Paramount Pictures Corp Secrecy system
US3025350A (en) * 1957-06-05 1962-03-13 Herbert G Lindner Security communication system
US3466385A (en) * 1967-06-13 1969-09-09 Zenith Radio Corp Correlation testing arrangement for a subscription television receiver

Also Published As

Publication number Publication date
US3733431A (en) 1973-05-15
DE2209097A1 (de) 1972-09-14
FR2128760A1 (enExample) 1972-10-20
GB1343862A (en) 1974-01-16

Similar Documents

Publication Publication Date Title
CA946946A (en) Signal coupling circuit
CA981566A (en) Transmission apparatus
CA1001957A (en) Multisignal transmission apparatus
CA944059A (en) Electronic communication apparatus employing encripted signal distribution
CA982331A (en) Component mounting apparatus
AU459403B2 (en) Electronic signal amplifier
CA949246A (en) Amplifier circuit for transmission lines
AU461857B2 (en) Noise-figure measuring circuit
CA969386A (en) Precise fluid-dividing apparatus
AU471365B2 (en) Receiving apparatus
CA979036A (en) Feeder apparatus
AU475811B2 (en) Viewer-copier apparatus
CA944021A (en) Electronic test system
CA870748A (en) Electronic distribution system
CA940246A (en) Group communication apparatus
AU453671B2 (en) Amplifier circuit for transmission lines
AU477384B2 (en) Wiring apparatus
CA868030A (en) Signal generator apparatus
CA879334A (en) Signal transmitter
CA874325A (en) Range apparatus
CA882906A (en) Waveshaping circuit apparatus
CA868650A (en) Telephone signal transmission system
CA878649A (en) Data signal generating apparatus
CA874075A (en) Electronic device
CA866388A (en) Electrical apparatus