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Broadcast data system with multiple-tuner receiver

  • US 5,812,937 A
  • Filed: 05/06/1996
  • Issued: 09/22/1998
  • Est. Priority Date: 04/08/1993
  • Status: Expired due to Fees
First Claim
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1. A system for transmitting and receiving program material and data corresponding to the program material, comprising:

  • a transmitter subsystem, including(i) a transmitter unit;

    (ii) program sources providing to the transmitter unit the program material, for transmission thereof;

    (iii) a data stream generator providing to the transmitter unit the data corresponding to the program material, for transmission thereof;

    a receiver subsystem, including(i) a first tuner detecting the program material;

    (ii) a second tuner detecting the data stream; and

    (ii) a processor configured to change an operating frequency of one of said first tuner and said second tuner in response to the data stream.

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