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:
Aug. 20, 1991
Filed:
Mar. 30, 1990
Applicant:
Inventors:
Naoji Nakahara, Nagoya, JP;
Keiji Kuzuya, Okazaki, JP;
Assignee:
Aisin Seiki K. K., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364449 ; 340990 ; 340995 ;
Abstract
There are disclosed an apparatus and a method for searching for the optimum route to be followed by a vehicle. The apparatus comprises a memory storing road maps, a keyboard having keys, and a microcomputer. The driver of the vehicle specifies a starting point and a destination in a network of roads displayed on a color CRT. Then, the microcomputer searches the network for a route which connects the starting point to the destination at the shortest distance.