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. 27, 1984
Filed:
Sep. 14, 1981
Applicant:
Inventors:
Hiroshi Yamaguchi, Yokosuka, JP;
Kenji Ikeura, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36443109 ; 1231 / ; 123333 ; 180 701 ; 180179 ; 340 53 ; 340 62 ;
Abstract
In order to mathematically detect the gear position of a vehicle transmission system, engine speed and vehicle speed are detected. A first reference level defined by a predetermined ratio of engine speed and vehicle speed is established for determining the gear position by a mathematical operation involving the sensed engine speed and the sensed vehicle speed and the reference level. The first reference level is shifted to a second reference level in accordance with the determined gear position, thereby preventing an erroneous determination of the gear position.