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:
May. 09, 1995
Filed:
Nov. 19, 1993
Nobutaka Inoue, Aichi, JP;
Masprodenkoh Kabushikikaisha, , JP;
Abstract
A navigation system includes a display, a map data storage device, a display control device, an intersection numbering device, a number indication control device, an intersection number input device, and a route determination device. The intersection numbering device prepares intersection numbers with respect to each intersection included in map data stored in the map data storage device. The number indication control device identifies each intersection on a road map displayed on a screen by indicating each displayed intersection with a respective intersection number. A user can specifically designate desired route intersections by inputting the corresponding intersection numbers indicated on the screen. Thus, a desired route can be readily and correctly determined. Since the map data does not originally contain the intersection numbers, the map data is small in volume, and a wide variety of map data, such as those with a different display color or layout, can be used for the navigation system.