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:
May. 29, 2012
Filed:
Nov. 21, 2008
Ryuji Shingyoji, Ome, JP;
Ryuji Shingyoji, Ome, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
The number of GPS satellites from which radio waves are received and the intensities of radio waves received from the GPS satellites are acquired. In a first state in which radio waves of a first signal intensity are received from four GPS satellites in a first predetermined time, orbit/time information are acquired from the respective GPS satellites. The time information indicates a radio-wave emission GMT clock time at the satellite when the radio waves were emitted from the satellite. In a second state in which radio waves of a second signal intensity lower than the first intensity are received from one or more GPS satellites within a second time longer than the first predetermined time, the time information is acquired from the respective GPS satellites. In the first state, a current time and a current position of the GPS timepiece is calculated based on the time/orbit information. In the second state, a current time is calculated based on the time information.