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:
Apr. 18, 1995
Filed:
Nov. 15, 1993
Applicant:
Inventors:
Assignee:
Masprodenkoh Kabushikikaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364449 ; 364444 ; 340990 ; 340995 ;
Abstract
A navigation system for motor vehicles determines a pie-shaped sector zone for triggering an indication of a route intersection on a displayed road map. The zone is defined by a pie-shaped sector of a circle having the intersection at its center, and provided with a radius determined with respect to the velocity of the vehicle. When the vehicle enters the zone corresponding to the vehicle's velocity, it is determined that the vehicle is approaching the intersection, and a next intersection to be passed by the vehicle is indicated on the road map. The driver can thus be guided along a predetermined route.