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EP0355232A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Road drawing system for a navigation apparatus

Assignee: Aisin AW Co Ltd
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Filing: 1988-12-30
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Granted: —
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Expires: 2008-12-30
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Abstract

Abstract A road drawing sustem for a navigation apparatus is adapted to output guidance information relating to a previously set course. The drawing system comprises a display device for displaying roads connected to a given route and intersections, road data indicating the relationship between roads and intersections, and map data for storing positional information on roads in the form of a multitude of coordinates. In the road drawing system for a navigation apparatus of this invention, the coordinates indicating the position of a road to be displayed are read out from the road data and the map data, and the coordinates thus read out are turned, contracted or enlarged, and transformed into coordinates of the set drawing area of the display means.

Inventors

  • 👤 Mitsuhiro Nimura
  • 👤 Akimasa Nanba
  • 👤 Shoji Yokoyama

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 15:19
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/26; G01C21/34; G01C21/36; G01C21/3667

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 106 words
A road drawing system for a navigation apparatus adapted to output guidance information relating to a previously set course, said system comprising display means for displaying roads connected to a given route and intersections, road data indicating the relationship between roads and intersections, and map data for storing positional information on roads in the form of a multitude of coordinates, the coordinates indicating the position of a road to be displayed being read out from said road data and said map data, and the coordinates thus read out being turned, contracted or enlarged, and transformed into coordinates of the set drawing area of said display means.
Claim 2
Dependent Claim 106 words
A road drawing system for a navigation apparatus adapted to output guidance information relating to a previously set course, said system comprising display means for displaying roads connected to a given route and intersections, road data indicating the relationship between roads and intersections, and map data for storing positional information on roads in the form of a multitude of coordinates, the coordinates indicating the position of a road to be displayed being read out from said road data and said map data, and the coordinates thus read out being turned, contracted or enlarged, and transformed into coordinates of the set drawing area of said display means.
Claim 3
Dependent Claim 43 words
A road drawing system as claimed in claim 1, wherein the present vehicle position is displayed on a screen representing said display means, the road map being turned to the purpose of displaying the road ahead in the upper section of the screen.
Claim 4
Dependent Claim 27 words
A road drawing system as claimed in claim 1 or claim 2, wherein guidance characters are drawn outside the drawing range set for each of said intersections.

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