05377113 is referenced by 40 patents and cites 11 patents.

In a navigation system for use in a vehicle, an administrative district and a first and a second roads are inputted by an input device. In the inputted administrative districts, an intersection formed by the inputted first and second roads is determined. The determined intersection is provided as at least one of a starting point intersection and a destination intersection. An optimum route from the starting point intersection to the destination intersection is computed.

Title
Navigation system for use in vehicle
Application Number
8/56912
Publication Number
5377113
Application Date
May 5, 1993
Publication Date
December 27, 1994
Inventor
Tatsuhiko Abe
Saitama
JP
Masami Shibazaki
Saitama
JP
Agent
Fish & Richardson
Assignee
Zexel Corporation
JP
IPC
G06F 15/50
View Original Source