Providing time sychronization to a GPS locator

Details Providing time sychronization to a GPS locator Providing time sychronization to a GPS locator

2006-05-09

2006-05-09

Nguyen, Lee (Department: 2682)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S456100, C342S357490, C342S358000

Reexamination Certificate

active

07043265

ABSTRACT:
A method and system for knowing positioning system standard time at a mobile unit with respect to a system, such as the Global Positioning System, when normal, direct measurement may be impracticable owing to low signal-to noise ratio, by calibrating the timing signal of an available communication network, such as a cellular telephone transmission network (610, 615). A time reference is set for the communication network with respect to the positioning system at a time when an adequate signal-to-noise ratio prevails and the offset of a timing event in the communication network control signal measured by means of the mobile unit's internal clock may be determined (620, 625). Subsequent times are measured with respect to this time reference by using the internal clock to measure time intervals therefrom.

REFERENCES:
patent: 5945944 (1999-08-01), Krasner
patent: 6204808 (2001-03-01), Bloebaum et al.
patent: 6430416 (2002-08-01), Loomis
patent: 6433734 (2002-08-01), Krasner
patent: 6603978 (2003-08-01), Carlsson et al.
patent: 2001/0012760 (2001-08-01), Avis
U.S. Appl. No. 09/585,619, filed Mar. 26, 2001, Nir et al.
“Understanding GPS Principles and Applications” Kaplan Artech House Publications 1996.

Affiliated with

Also associated with

Rating

Providing time sychronization to a GPS locator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Providing time sychronization to a GPS locator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Providing time sychronization to a GPS locator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3584619