Map display apparatus storing data of physically adjacent map sections in physically adjacent storage locations
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United States of America Patent
Stats
-
Jun 26, 1990
Issued Date -
N/A
app pub date -
Aug 9, 1988
filing date -
Apr 27, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
International Classification(s)
Cited Art Landscape
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