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Method and system for sharing a clock reference signal within an integrated mobile device

  • US 8,559,969 B2
  • Filed: 09/15/2008
  • Issued: 10/15/2013
  • Est. Priority Date: 09/15/2008
  • Status: Expired due to Fees
First Claim
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1. A method of sharing a clock reference signal of an oscillator that is input to a global positioning system (GPS) and a modem system within an integrated mobile device, the method comprising:

  • receiving an input signal at the modem system;

    comparing the input signal with the clock reference signal at the modem system to define a frequency error signal;

    altering a signal input at the oscillator by the GPS based upon the frequency error signal from the modem system to alter a frequency of the clock reference signal to synchronize the modem system with a corresponding network; and

    altering a value to be added to the altered frequency clock reference signal that is employed by the GPS, wherein the value is based on the frequency error signal.

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