05945944 is referenced by 355 patents and cites 25 patents.

A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and decoded to provide accurate time information. The timing signals may be in the form of synchronized events marked by timing indicators, or as system time information. The timing signals in combination with satellite position signals received by the GPS receiver are used to determine the position of the GPS receiver.

Title
Method and apparatus for determining time for GPS receivers
Application Number
759523
Publication Number
5945944
Application Date
April 24, 1997
Publication Date
August 31, 1999
Inventor
Norman F Krasner
San Carlos
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
SnapTrack
CA, US
IPC
G01S 5/02
H04B 7/185
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