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APPARATUS AND METHODS FOR MAINTAINING A RELIABLE TIME CLOCK ON A MOBILE COMPUTING DEVICE SUPPORTING SATELLITE BASED POSITION DETERMINATION CAPABILITY

  • US 20090219205A1
  • Filed: 02/28/2008
  • Published: 09/03/2009
  • Est. Priority Date: 02/28/2008
  • Status: Active Grant
First Claim
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1. A mobile computing device comprising a time clock to display local time information derived from stored time data, the mobile computing device optionally enabling and disabling acquisition of time data from multiple sources including a mobile network and a global positioning system (GPS) satellite, the mobile computing device to prioritize the multiple sources for writing and overwriting the stored time data to converge to the most reliable time data available.

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