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CATV terminal device in two-way communication CATV system

  • US 5,481,757 A
  • Filed: 10/26/1993
  • Issued: 01/02/1996
  • Est. Priority Date: 10/26/1992
  • Status: Expired due to Fees
First Claim
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1. In a two-way communication CATV system havinga CATV broadcasting station for transmitting a CATV broadcasting signal including frequency-division-multiplexed broadcasting signals corresponding to a plurality of channels;

  • a plurality of CATV terminal devices respectively assigned different particular frequencies for transmitting channel request signals for requesting channels desired out of said plurality of channels; and

    a relay device for receiving the CATV broadcasting signal transmitted from said CATV broadcasting station as well as receiving the channel request signals transmitted from said CATV terminal devices, frequency-converting the broadcasting signal corresponding to the channel requested by the channel request signal transmitted from each of said CATV terminal devices out of the broadcasting signals corresponding to the plurality of channels included in said CATV broadcasting signal into a broadcasting signal having the particular frequency assigned to the corresponding CATV terminal device and transmitting the broadcasting signal to the corresponding CATV terminal device, each of the plurality of CATV terminal devices in the two-way communication CATV system comprising;

    storing means for storing a recognition number;

    frequency determining means for determining the frequency of the broadcasting signal transmitted from said relay device; and

    recognition number setting means for determining the recognition number depending on the frequency determined by said frequency determining means and storing the determined recognition number in said storing means.

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