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:
Dec. 06, 2011
Filed:
Aug. 04, 2008
Yousuke Hattori, Ama-gun, JP;
Minoru Okada, Gifu, JP;
Masahiro Goto, Kariya, JP;
Hiroshi Inou, Kariya, JP;
Yoshifumi Kato, Nishikamo-gun, JP;
Yousuke Hattori, Ama-gun, JP;
Minoru Okada, Gifu, JP;
Masahiro Goto, Kariya, JP;
Hiroshi Inou, Kariya, JP;
Yoshifumi Kato, Nishikamo-gun, JP;
Denso Corporation, Kariya, JP;
Abstract
An apparatus corrects a position coordinate measured by a GPS receiver. Road data representing a position coordinate of a constructed road is included. Locus data representing a plurality of position coordinates of the GPS receiver during a past specified period is generated based on a position coordinate acquired. A road section traveled by the GPS receiver during the past specified period is estimated based on road data stored and a position coordinate acquired. A bias error of a position coordinate measured by the GPS receiver is estimated based on position coordinates at a plurality of points in a road section estimated and position coordinates at a plurality of points represented by the locus data. A position coordinate measured by the GPS receiver is corrected based on a bias error estimated and outputted.