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. 26, 1989
Filed:
Oct. 27, 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:
Assistant Examiner:
Int. Cl.
CPC ...
G01C / ; G08G / ;
U.S. Cl.
CPC ...
364457 ; 364460 ; 340995 ; 7317 / ; 318587 ; 33356 ; 33320 ;
Abstract
The invention provides various methods for detecting the bearing of a moving vehicle and of processing data in a vehicular navigation system. Provided there is carried out a process of recognizing the present position of the vehicle while the vehicle is moving at a predetermined speed, bearing data obtained from a prestored map is utilized to determine the present position of the vehicle. At that time, the data output from a terrestrial magnetism sensor, which would otherwise be used, is discarded.