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Method and apparatus for synchronizing a receiver to a transmitted signal while conserving power

  • US 5,241,568 A
  • Filed: 12/02/1991
  • Issued: 08/31/1993
  • Est. Priority Date: 12/02/1991
  • Status: Expired due to Fees
First Claim
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1. A method for synchronizing a receiver to a transmitted signal, the transmitted signal having a first predetermined signal for indicating a start of a new transmission to the receiver and having a second predetermined signal inserted at periodic sampling time intervals for synchronizing the receiver to the transmitted signal, the method comprising the steps of:

  • (a) synchronizing to the transmitted signal by detecting the first predetermined signal followed by the second predetermined signal, and establishing subsequent periodic sampling time intervals therefrom;

    (b) conserving power in the receiver during a second portion of one of the periodic sampling time intervals following a detection of a first portion of the second predetermined signal during a first portion of the one of the periodic sampling time intervals; and

    (c) searching for a portion of the first predetermined signal during the second portion of the one of the periodic sampling time intervals following a lack of detection of the first portion of the second predetermined signal during the first portion of the one of the periodic sampling time intervals.

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