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.

Date of Patent:
Nov. 05, 2002

Filed:

Jan. 06, 1998
Applicant:
Inventor:

Shinichi Matsunaga, Wako, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/18 ; G09G 3/20 ;
U.S. Cl.
CPC ...
G09G 3/18 ; G09G 3/20 ;
Abstract

A road image display device for displaying an image of a road whereon a vehicle is travelling on a display screen by scrolling the road image at a specified speed as one would feel driving a vehicle thereon viewing the image from a fixed viewing point, which display device is provided with an input control section for inputting road design data concerning a straight line area, a clothoid curve (relaxed-curvature curve) area and a circular-arc area for a travelling road distance, and an electronic control unit for generating a road image representing a straight-line area, clothoid curve area and a circular-arc area according to the input road design data and which can easily generate any desired road image according to a free road design and more particularly can represent an image of a curved road portion by a curve having a relaxed curvature for joining a straight-line with a circle of a constant curvature.


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