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Televison programming information system

  • US 4,449,249 A
  • Filed: 09/27/1982
  • Issued: 05/15/1984
  • Est. Priority Date: 09/27/1982
  • Status: Expired due to Fees
First Claim
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1. A method of providing up to date television programming information together with a commercial to a viewer of television, independent of the viewer'"'"'s television set, including the steps of:

  • (a) transmitting a radio frequency carrier modulated by first and second sub-carrier signals along with a normal radio broadcast signal, said first sub-carrier signal being further modulated by said commercial which repeats at successive constant first time periods, said second sub-carrier signal being further modulated by upcoming television program information which repeats at successive constant second time periods;

    (b) transmitting synchronizing pulses at the beginning of said first time periods modulated along with said commercial on said first sub-carrier signal;

    (c) receiving and processing modulated radio frequency carrier at a receiver to provide said normal radio broadcast signal, said commercial and television program information and said synchronizing pulses; and

    (d) playing said commercial and television program information under control of said synchronizing pulses so that said viewer always hears first said commercial and second said upcoming television program information whenever said viewer operates said receiver to receive such information.

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