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. 01, 1994
Filed:
Mar. 24, 1992
Applicant:
Inventors:
Haruhisa Tamai, Sunnyvale, CA (US);
Tatsuhiko Abe, Saitama, JP;
Assignee:
Zexel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364449 ; 364444 ; 340990 ; 340995 ;
Abstract
A vehicle navigation system computes an optimal route from stored map data. Where the vehicle deviates from the optimal route, either by mistake or by choice, the driver can command computation of a new optimal route. The driver may choose whether or not to permit U-turns on the new route, thereby insuring that the original optimal route will not be retraced if his deviation was deliberate. Route guidance, deviation, and U-turn selection information is displayed to help the driver follow the original optimal route, to command computation of a new optimal route, and to choose whether or not to permit U-turns along the new optimal route.