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:
Dec. 16, 2008
Filed:
Jan. 23, 2008
Yiming Yu, Cupertino, CA (US);
Yiming Yu, Cupertino, CA (US);
Trimble Navigation Limited, Sunnyvale, CA (US);
Abstract
A GPS receiver having a fast method for determining GPS clock time. The GPS receiver includes a signal processor for receiving GPS signals from GPS satellites and detecting current GPS data bits carried by the respective GPS signals, a chapter memory for storing a block of expected GPS data bits for the respective GPS satellites, and a GPS time detector for detecting a successful match when a chunk of the expected data bits within a selected search range within the block matches a chunk of the current data bits, and using the successful match for determining the GPS clock time. In an anytime embodiment the GPS receiver enters an operation mode at any time in order to minimize user request latency. In a focused embodiment the GPS receiver enters the operation mode at a prescribed time-of-entry in order to minimize power consumption for cycles of standby and operation modes.