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:
Nov. 23, 2010
Filed:
Oct. 31, 2006
Lionel J. Garin, Palo Alto, CA (US);
Lars Boeryd, Rancho Santa Margarita, CA (US);
Makarand S. Phatak, Sunnyvale, CA (US);
Lionel J. Garin, Palo Alto, CA (US);
Lars Boeryd, Rancho Santa Margarita, CA (US);
Makarand S. Phatak, Sunnyvale, CA (US);
SiRF Technology, Inc., San Jose, CA (US);
Abstract
Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods. A client device is disclosed that stores satellite states determined from broadcast ephemeris and numerically integrates equations of motion with regard to the stored satellite states to determine current satellites states. The client device uses the current satellite states in conjunction with received satellite signals to determine where the satellite signals were received.