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:
Jul. 31, 2012
Filed:
Sep. 29, 2009
Applicants:
Xiaoguang Yu, Wuhan, CN;
Hongzhang Wang, Wuhan, CN;
Inventors:
Xiaoguang Yu, Wuhan, CN;
Hongzhang Wang, Wuhan, CN;
Assignee:
O2Micro, Inc, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A satellite navigation receiver having multiple operation states includes a processing unit and a power management interface. The processing unit is operable for locating the satellite navigation receiver based on multiple satellite signals and operable for setting multiple time durations of the operation states respectively based on a velocity of the satellite navigation receiver. The power management interface coupled to the processing unit is operable for switching the satellite navigation receiver among the operation states according to the time durations.