Synchronization system and method for achieving low power battery operation of a vehicle locating unit in a stolen vehicle recovery system which receives periodic transmissions

  • US 20110098015A1
  • Filed: 10/14/2010
  • Published: 04/28/2011
  • Est. Priority Date: 10/23/2009
  • Status: Active Grant
First Claim
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1. A synchronization system for achieving low power battery operation of a vehicle locating unit in a stolen vehicle recovery system which receives periodic transmissions, comprising:

  • a radio receiver for receiving periodic transmissions; and

    a microprocessor configured to turn on said receiver for a limited time to detect an expected message;

    if an expected message is not found, turning off said receiver and turning it on again after a time asynchronous with said transmission period;

    after finding an expected message, waiting for the period of the transmissions less the length of an expected message and then looking for a synchronization symbol in the expected message and synchronizing subsequent actuation of said receiver using that synchronization symbol.

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