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. 31, 2002
Filed:
Sep. 27, 2001
Naohisa Uehara, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A vehicle position recognizing system includes at least one magnetic marker for forming a magnetic field at a predetermined position on the road surface and at least one magnetic sensor for detecting the intensity of the magnetic field formed by the magnetic marker. An on-vehicle detector is provided for performing operation of the vehicle position on the basis of the magnetic field intensity obtained from the magnetic sensor at positions separated forward and backward from the magnetic marker by a predetermined amount. The on-vehicle detector has a correcting unit for correcting the magnetic field intensity of the magnetic marker on the basis of the magnetic field intensity obtained from the magnetic sensor at positions separated forward and backward from the magnetic marker by a predetermined amount. The on-vehicle detector also has a judging unit for judging the presence of the magnetic marker. The correction and judgment are preformed on the basis of an average value of the magnetic field intensity obtained from the magnetic sensor.