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:
May. 08, 1990
Filed:
Jul. 02, 1987
Applicant:
Inventors:
Hitoshi Ando, Saitama, JP;
Takashi Kashiwazaki, Saitama, JP;
Masayuki Hosoi, Saitama, JP;
Atsuhiko Fukushima, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G09B / ;
U.S. Cl.
CPC ...
364449 ; 364454 ; 340995 ;
Abstract
A momentarily changing position of a travelling vehicle is correctly identified by a vehicular nagivation system on which a magnetism sensor, angular velocity sensor, travel distance sensor and global positioning system are mounted. The current position of the vehicle is identified by, for example, storing data of a road on a map in the form of numerical values, measuring a predetermined distance which the vehicle has travelled and computing the current position on the road based upon the predetermined distance thus measured.