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:
Jan. 22, 2013
Filed:
Apr. 19, 2010
Applicant:
Hiroki Yoshioka, Matsumoto, JP;
Inventor:
Hiroki Yoshioka, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 19/40 (2010.01); G01S 19/30 (2010.01);
U.S. Cl.
CPC ...
Abstract
A position calculating method includes: estimating a reception frequency and a code phase related to reception of a positioning signal from a positioning satellite as an estimated measurement; acquiring a reception frequency and a code phase on the basis of the positioning signal received from the positioning satellite; setting a value of an error parameter as an observed measurement, which is used in position calculation using a Kalman filter, on the basis of a difference between the observed measurement and the estimated measurement; and calculating a position by performing the position calculation using the error parameter value.