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. 15, 2025
Filed:
Feb. 01, 2021
Hitachi Astemo, Ltd., Hitachinaka, JP;
Masahiro Kiyohara, Tokyo, JP;
Takeshi Ogata, Tokyo, JP;
Hiroki Ota, Tokyo, JP;
Shinichi Amaya, Tokyo, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
A host vehicle position estimation unit includes an absolute position estimation unit that estimates a first vehicle position based on absolute position information acquired from a GNSS. The host vehicle position estimation unit further includes a relative position estimation unit that estimates a second vehicle position based on relative position information acquired from outside the host vehicle; a traveling state determination unit that determines a change of a traveling state of the host vehicle based on vehicle information or satellite information; a difference computation unit that computes a time synchronized difference between the first and the second vehicle positions; a learning unit that accumulates the difference as time-series data for each traveling state and learns a correction amount of the first vehicle position for each traveling state based on the time-series data; and a position correction unit that corrects the first vehicle position based on the correction amount.