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:
Jan. 01, 1991
Filed:
Nov. 13, 1989
Hiroshi Kamiyama, Tokyo, JP;
Makoto Kimura, Kanagawa, JP;
Nissan Motor Company, Ltd., , JP;
Abstract
A system and method for recognizing an elevated vehicle running environment are disclosed in which, when a detected vehicle speed exceeds a predetermined speed and is continued for a predetermined time, the system and method determine that a predetermined running condition is satisfied, then, the system and method detect the steering angle of the steering wheel of the vehicle and determine whether the accumulated value of the steering angle data exceeds a predetermined value, if yes, the system and method determine that the vehicle is running on an elevated freeway. Thus the reliability of recognition for elevated running environments can be remarkably improved for vehicular navigation systems.