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. 14, 2005
Filed:
Feb. 21, 2003
Koichiro Teranishi, Kanagawa, JP;
Katsuyuki Tanaka, Kanagawa, JP;
Katsuya Hori, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A GPS receiver can periodically obtain range data without degrading the performance such as positioning sensitivity and positioning speed and conserve energy consumption. Supplied with IF data from a frequency conversion section, a synchronization hold section () acquires synchronization of a carrier frequency and phase synchronization of a C/A code, holds the acquired state, and obtains necessary information such as range data. When range data is obtained, a switch () is turned off to stop supplying the power to the synchronization hold section (). A control section () executes a positioning operation using the obtained range data and the like, finds and outputs positioning information indicative of a current position. Thereafter, the switch () is turned on to restart the synchronization hold section (). In this manner, control is provided to repeatedly start and stop the synchronization hold section ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile