The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 2004
Filed:
Feb. 21, 2002
Applicant:
Inventors:
Ashutosh Pande, San Jose, CA (US);
Lionel J. Garin, Palo Alto, CA (US);
Chiayee S. Chang, San Jose, CA (US);
Gengsheng Zhang, Cupertino, CA (US);
Randall J. Silva, Monument, CO (US);
Assignee:
SiRF Technologies, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 5/14 ; G01C 2/126 ;
U.S. Cl.
CPC ...
G01S 5/14 ; G01C 2/126 ;
Abstract
The present invention discloses a system for determining the position of a GPS terminal. The system comprises a GPS terminal, a location aiding server, and a communications system. Messages are passed between the GPS terminal and the server, as well as within the GPS terminal, to determine the mode of operation of the GPS portion of the system. Decisions are made based on availability of aiding data and Quality of Service requirements.