×

Telephone interfaced subscription cable television system especially useful in hotels and motels

  • US 4,008,369 A
  • Filed: 02/28/1975
  • Issued: 02/15/1977
  • Est. Priority Date: 02/28/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. A control and monitoring device for use in a telephone interfaced subscriber television system for receiving from a telephone exchange system subscriber initiated telephone signals and for supplying signals to the automatic telephone exchange system including enabling signals peculiar to the telephone signals, comprising:

  • first means having an input for receiving the telephone signals from the automatic telephone exchange system including a pulse train consisting of a predetermined number of one or more pulses, said pulse train representing a subscriber request for a particular television program signal, and responsive to the predetermined number of said one or more pulses in the pulse train for providing an output signal on a predetermined one of N number of separate outputs; and

    second means connected to said first means and responsive to the output signal on the predetermined one of the N number of separate outputs of said first means for providing simultaneous output signals on a predetermined number of n number of separate outputs; and

    third means including an enabling signal source for selectively generating simultaneously the predetermined number of n number of enabling signals each signal having a different signal frequency, said third means having an output adapted to be connected to the automatic telephone exchange system for supplying the enabling signals to said system and connected to said second means and responsive to the output signals on the predetermined number of the n number of separate outputs of said second means for providing at the output of said third means the predetermined number of the n number of enabling signals from said enabling signal source whereby said predetermined enabling signals are a function of the number of pulses in said pulse train.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×