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:
Feb. 21, 1984
Filed:
Sep. 29, 1981
Applicant:
Inventors:
Ryohei Tanaka, Osaka, JP;
Akinobu Kitamura, Nagaokakyo, JP;
Takaaki Odake, Nagaokakyo, JP;
Yutaka Kato, Kyoto, JP;
Assignee:
Omron Tateisi Electronics, Co., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G / ; G08G / ;
U.S. Cl.
CPC ...
340937 ; 2502221 ; 340933 ; 340942 ; 358 93 ; 358108 ;
Abstract
An optical vehicle detection system comprising camera means for catching the image of a vehicle running in a selected roadway lane to generate an output video signal, inquiring means for inquiring if the output video signal includes a predetermined shadow signal component, and processing means associated with the inquiring means, if the output video signal includes the predetermined shadow signal component, for processing the output video signal as a signal having a component of shadow cast by a vehicle.