Method for updating ephemeris data of global positioning system

Details Method for updating ephemeris data of global positioning system Method for updating ephemeris data of global positioning system

2008-09-23

2008-09-23

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

Reexamination Certificate

active

11309733

ABSTRACT:
The present invention provides a method for updating GPS ephemeris data, which is applicable to a navigation device containing a GPS ephemeris data. The method for updating GPS ephemeris data includes the following steps: first, the navigation device counting down a predetermined time; next, searching a GPS ephemeris data server through a network interface; then performing a download from the GPS ephemeris data server so as to update the GPS ephemeris data in the navigation device. Accordingly, the time required for updating ephemeris data is shortened.

REFERENCES:
patent: 2006/0181452 (2006-08-01), King et al.
patent: 2006/0250304 (2006-11-01), Mo et al.
patent: 2007/0247355 (2007-10-01), King et al.

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