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. 07, 2009
Filed:
Aug. 03, 2007
Shunichi Mizuochi, Matsumoto, JP;
Yoshiyuki Muraguchi, Shiojiri, JP;
Shunichi Mizuochi, Matsumoto, JP;
Yoshiyuki Muraguchi, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A positioning device includes an estimated height storage section which stores an estimated height H, a signal reception section which receives a satellite signal which is a signal from a satellite positioning system (SPS) satellite, a two-dimensional height calculation section which calculates a two-dimensional height Hby two-dimensional positioning using the estimated height H, a three-dimensional height calculation section which calculates a three-dimensional height Hby preliminary three-dimensional positioning during two-dimensional positioning, a height selection section which selects the two-dimensional height Hor the three-dimensional height Hin order to update the estimated height H, and an updating section which updates the estimated height Hwith the two-dimensional height Hor the three-dimensional height Hselected by the height selection section.