×

Method and apparatus for compensating an oscillator in a location-enabled wireless device

  • US 20060094465A1
  • Filed: 12/19/2005
  • Published: 05/04/2006
  • Est. Priority Date: 02/22/2002
  • Status: Active Grant
First Claim
Patent Images

1. In a mobile device having a wireless receiver for receiving wireless signals and a global positioning system (GPS) receiver for receiving satellite signals, wherein the mobile device includes an oscillator for providing first and second oscillator signals for use with the wireless receiver, a method of providing to the GPS receiver reference information for processing the satellite signals, the method comprising:

  • obtaining the first oscillator signal;

    sensing a temperature proximate to the oscillator;

    obtaining from a temperature model an oscillator-signal error, wherein the oscillator-signal error is a function of a comparison between frequencies of a wireless signal and the second oscillator signal; and

    providing to the GPS receiver the oscillator-signal error and the first oscillator signal, wherein the GPS receiver is operable to process satellite signals using the oscillator-signal error and the first oscillator signal.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×