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:
Mar. 18, 1997
Filed:
Sep. 28, 1994
Applicant:
Inventors:
Kazuaki Takano, Mito, JP;
Naoyuki Tanaka, Abiko, JP;
Makoto Shioya, Tokyo, JP;
Takuya Imaide, Fujisawa, JP;
Kenichirou Kurata, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G / ;
U.S. Cl.
CPC ...
340903 ; 180169 ; 340435 ; 348148 ; 348170 ; 369461 ;
Abstract
Safety of the distance between vehicles is judged by monitoring whether or not an object other than a front road surface, namely, a preceding vehicle, exists in a predetermined area of the front road surface which is recognized by a picture processing unit used as a sensor for recognizing traffic states of the front road, without recognizing an image of a preceding vehicle having a complicated shape and a plurality of colors of the preceding vehicle by means of picture processing.