Title:
MAP DISPLAY UNIT
Document Type and Number:
Japanese Patent JPS61250671
Kind Code:
A
Abstract:
A map display apparatus displays a map of a desired district in accordance with stored map data. The apparatus includes a recording medium storing map data of a map to be displayed in a manner that the whole area of the map is divided into a plurality of districts and the map data are successively stored starting from the nearest district, a display district selecting device for selecting the desired map district to be displayed, a control unit for reading the map data of the selected district from the recording medium and generating a control signal for displaying the thus read map data, and a display responsive to the control signal to display the map of the selected district. The map data of each district includes duplicate map data of the boundary parts of the adjoining districts. Map data of adjacent districts are stored in adjacent memory locations. Thus, the map data of the desired district can be displayed quickly.
Inventors:
YAMADA TAKESHI
FUJII TOMOYASU
FUJII YOSHIHISA
ITO KENZO
FUJII TOMOYASU
FUJII YOSHIHISA
ITO KENZO
Application Number:
JP9305485A
Publication Date:
November 07, 1986
Filing Date:
April 27, 1985
Export Citation:
Assignee:
NIPPON DENSO CO
International Classes:
G09B29/10; G01C21/00; G01C21/32; (IPC1-7): G09B29/10
Attorney, Agent or Firm:
Tsutomu Adachi