CH282897A - TV channels with encrypted TV signals. - Google Patents

TV channels with encrypted TV signals.

Info

Publication number
CH282897A
CH282897A CH282897DA CH282897A CH 282897 A CH282897 A CH 282897A CH 282897D A CH282897D A CH 282897DA CH 282897 A CH282897 A CH 282897A
Authority
CH
Switzerland
Prior art keywords
encrypted
channels
signals
Prior art date
Application number
Other languages
German (de)
Inventor
Corporation Zenith Radio
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 CH282897A publication Critical patent/CH282897A/en

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
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17345—Control of the passage of the selected programme
    • H04N7/17363—Control of the passage of the selected programme at or near the user terminal
    • 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
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/1739—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream communication being transmitted via a separate link, e.g. telephone line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Closed-Circuit Television Systems (AREA)
CH282897D 1950-05-08 1950-12-20 TV channels with encrypted TV signals. CH282897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11453/50A GB675061A (en) 1950-05-08 1950-05-08 Improvements in television transmitters

Publications (1)

Publication Number Publication Date
CH282897A true CH282897A (en) 1952-05-15

Family

ID=9986532

Family Applications (2)

Application Number Title Priority Date Filing Date
CH282898D CH282898A (en) 1950-05-08 1950-12-20 Television receiver for receiving an encrypted television signal.
CH282897D CH282897A (en) 1950-05-08 1950-12-20 TV channels with encrypted TV signals.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH282898D CH282898A (en) 1950-05-08 1950-12-20 Television receiver for receiving an encrypted television signal.

Country Status (2)

Country Link
CH (2) CH282898A (en)
GB (2) GB675062A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058096B (en) * 1952-12-15 1959-05-27 Zenith Radio Corp Encryption or decryption device for subscription television systems
DE1083309B (en) * 1955-01-12 1960-06-15 Skiatron Electronics And Telev Device for the encryption or decryption of television signals
DE1126915B (en) * 1956-02-03 1962-04-05 Skiatron Electronics And Telev Television system for the transmission of encrypted programs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058096B (en) * 1952-12-15 1959-05-27 Zenith Radio Corp Encryption or decryption device for subscription television systems
DE1083309B (en) * 1955-01-12 1960-06-15 Skiatron Electronics And Telev Device for the encryption or decryption of television signals
DE1126915B (en) * 1956-02-03 1962-04-05 Skiatron Electronics And Telev Television system for the transmission of encrypted programs

Also Published As

Publication number Publication date
CH282898A (en) 1952-05-15
GB675061A (en) 1952-07-02
GB675062A (en) 1952-07-02

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