Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-07
2006-03-07
D'Agosta, Stephen M. (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456300, C455S255000, C455S264000, C455S265000, C331S158000, C331S176000, C342S357490, C342S357610, C342S357490
Reexamination Certificate
active
07010307
ABSTRACT:
A method and apparatus for compensating an oscillator in a location-enabled wireless device is described. In an example, a mobile device includes a wireless receiver for receiving wireless signals and a GPS receiver for receiving GPS signals. The mobile device also includes an oscillator having an associated temperature model. A frequency error is derived from a wireless signal. The temperature model is adjusted in response to the frequency error and a temperature proximate the oscillator. Frequency error of the oscillator is compensated using the adjusted temperature model. In another example, a frequency error is derived using a second oscillator within the wireless receiver.
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Copy of International Search Report dated Jul. 11, 2003 from corresponding PCT application, PCT/US03/05287.
D'Agosta Stephen M.
Global Locate, Inc.
Moser IP Law Group
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