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:
Jun. 16, 2015
Filed:
Feb. 17, 2011
Mikio Bando, Mito, JP;
Toshiyuki Aoki, Hitachi, JP;
Tomoaki Hiruta, Hitachi, JP;
Takayoshi Yokota, Hitachiota, JP;
Hiroyuki Kohida, Zama, JP;
Kazuhiro Okada, Ebina, JP;
Zhixing Liu, Tokyo, JP;
Mikio Bando, Mito, JP;
Toshiyuki Aoki, Hitachi, JP;
Tomoaki Hiruta, Hitachi, JP;
Takayoshi Yokota, Hitachiota, JP;
Hiroyuki Kohida, Zama, JP;
Kazuhiro Okada, Ebina, JP;
Zhixing Liu, Tokyo, JP;
Clarion Co., Ltd., Saitama-shi, JP;
Abstract
A position estimation device includes: a mathematical expression model processing unit that calculates a position of a mobile object, a condition quantity indicating a moving condition of the mobile object and an error in the condition quantity through filtering processing executed by using a probability model based upon an attitude information and a positioning information of the mobile object having been obtained from sensors and a specific mathematical expression model among a plurality of mathematical expression models expressing behavior of the mobile object; a threshold calculation unit that calculates a threshold candidate value for a threshold value to be used as a criterion when selecting the specific mathematical expression model, by using the error; a threshold value determining unit that determines the threshold value based upon the threshold candidate value; and a mathematical expression model selection unit that selects the specific mathematical expression model based upon the threshold value.