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Subscriber station for providing multiple services to a subscriber

  • US 4,367,548 A
  • Filed: 04/10/1980
  • Issued: 01/04/1983
  • Est. Priority Date: 04/10/1980
  • Status: Expired due to Term
First Claim
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1. A subscriber station for multiplexed communication with a telephone central office which provides one or more television channels unrelated to the telephone signals in addition to telephone service, comprising:

  • a single fiber optic receiving cable coupled between said subscriber station and said telephone central office;

    a single fiber optic transmitting cable coupled between said subscriber station and said telephone central office;

    a fiber optic receiver for receiving light television signals from said telephone central office for at least one selected television channel and light telephone signals frequency division multiplexed on said receiving cable, wherein the fiber optic receiver converts the received light signals into radio frequency electrical signals;

    a radio frequency splitter coupled to the output of said fiber optic receiver for separating the television signals from the telephone signals;

    a modem coupled to the radio frequency splitter to receive telephone signals from the radio frequency splitter;

    a universal asynchronous receive-transmit circuit coupled to the modem to transmit and receive signals between said modem and said universal asynchronous receive-transmit device;

    a telephone interface circuit coupled to said universal asynchronous receive-transmit device and to the output of said radio frequency splitter for receiving telephone signals from both the universal asynchronous receive-transmit device and said radio frequency splitter and providing the signals to a telephone coupled to the output of the telephone interface circuit;

    a radio frequency summer coupled to the output of the telephone interface circuit and the output of the modem; and

    a fiber optic transmitter coupled to the output of said radio frequency summer for converting the radio frequency signals to light telephone signals for transmission to the telephone central office.

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