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:
Jun. 09, 2009
Filed:
Apr. 22, 2005
Alan Martin Gilkes, Plano, TX (US);
Alan Martin Gilkes, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Methods and apparatus to share time and frequency data between a host processor and a satellite position system (SPS) receiver in a satellite positioning system are disclosed. An example method disclosed herein generates a host processor local time based on a real-time clock associated with the host processor; adjusts the host processor local time to synchronize with a SPS time received from the SPS receiver and to correct a local frequency error of the real-time clock of the host processor; calculates an estimated SPS time based on the adjusted real-time clock signal of the host processor; and attempts to fix a SPS time and a position of the SPS receiver from SPS signals received from a plurality of SPS satellites based on the estimated SPS time.