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Adaptive radio receiver controller method and apparatus

  • US 5,428,820 A
  • Filed: 10/01/1993
  • Issued: 06/27/1995
  • Est. Priority Date: 10/01/1993
  • Status: Expired due to Term
First Claim
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1. A method of controlling a radio receiver for use in a radio communication system, the radio communication system including a first radio receiver and a first remote transmitter, the first remote transmitter transmitting timing information and unique words, the radio receiver receiving unique words and including a first low frequency oscillator, a reference oscillator, and a user interface the method comprising the steps of:

  • A) powering the radio receiverB) receiving the timing information at the radio receiver;

    C) calculating a count duration value responsive to the timing information;

    D) programming a timing device with the count duration value;

    E) shutting down a first portion of the radio receiver circuitry, including at least the reference oscillator;

    F) waking up the first portion of the radio receiver circuitry in response to an indication from the timing device;

    G) increasing the count duration value responsive to receiving a false unique word via the radio receiver circuitry;

    H) repeating steps d through g until a first condition is met, the first condition selected from the group consisting of a first predetermined time is lapsed and a valid unique word is received;

    I) decreasing the count duration value in response to the first predetermined time is elapsing;

    J) repeating steps a through h in response to said step of decreasing;

    K) calculating a new count duration value responsive to receiving a valid unique word; and

    L) repeating steps d through j responsive to said step of calculating a new count duration value.

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