System for conserving battery life in a battery operated device

  • US 8,151,127 B2
  • Filed: 01/27/2010
  • Issued: 04/03/2012
  • Est. Priority Date: 07/26/2000
  • Status: Active Grant
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First Claim
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1. A battery operated device comprising:

  • a receiver for receiving a transmission that includes a postamble; and

    a sensor, in a tire, that measures a parameter of the tire and outputs data indicative of the parameter; and

    a microprocessor coupled to the receiver and the sensor, configured to periodically partially awaken to determine whether the transmission is likely a forward link packet (FLP) by examining the postamble, and to transmit the data in a reverse link packet (RLP) in response to confirming that the transmission is a FLP.

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