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:
Feb. 02, 2016
Filed:
Feb. 04, 2013
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Tsubasa Shirai, Shiojiri, JP;
Yoshitaka Yamagata, Matsumoto, JP;
Assignee:
Seiko Epson, Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 24/00 (2009.01); H04W 64/00 (2009.01); G01S 19/52 (2010.01); G01S 11/10 (2006.01);
U.S. Cl.
CPC ...
H04W 64/006 (2013.01); G01S 11/10 (2013.01); G01S 19/52 (2013.01);
Abstract
In a baseband processing circuit unit, a reception signal type determination unit determines whether or not a reception signal in a GPS reception unit is an indirect wave. A movement speed calculation unit calculates a movement speed of the GPS reception unit using a correction coefficient of a relative speed determined in accordance with the determination of whether or not the reception signal is an indirect wave, a transmission frequency of a GPS satellite signal and a reception frequency in the GPS reception unit.