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Map-display-system

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Map display system

Details

Inventors: Takagi, Satoru;
Assignee: Kokusai Denshin Denwa Co., Ltd. (Tokyo, JP)
Primary Examiner: Blum; Theodore M.
Assistant Examiner:
Attorney, Agent or Firm: Arent Fox Kintner Plotkin & Kahn PLLC

A map display system includes a plurality of geographic information servers, a geographic information search server and clients, connected to each other through network. The geographic information search server searches a plurality of geographic information servers and generates a combination list containing information of existential place of the plurality of geographic information servers. The clients obtain a plurality of geographic information from the plurality of geographic information servers designated by the combination list and display the obtained plurality of geographic information while superimposing them so that the coordinates thereof coincide each other on the same screen.

DETAILED DESCRIPTION Therefore, an object of the present invention is to provide a map display system in which a client can display various geographic information with a plurality of geographic information servers on the network.
The present invention provides a map display system including a plurality of geographic information servers, a geographic information search server searching the geographic information servers and clients displaying a map, connected to each other through a network, and displaying geographic information in the geographic information servers by the clients.
The geographic information search server includes an index information database containing index information of geographic information provided by each geographic information server, and a geographic information server search unit searching a plurality of geographic information servers and generating a combination list containing location information of the plurality of geographic information servers.
The clients include a geographic information search server access unit for obtaining the combination list, a geographic information server access unit for obtaining a plurality of geographic information from the plurality of geographic information servers designated by the combination list and an user interface control unit for displaying the obtained plurality of geographic information while superimposing them so that the coordinates thereof coincide with each other on the same screen.
Thus, the client in map display system can display geographic information in all of the geographic information server on network.
According to an embodiment of the invention, the index information include information of an image range common to all of the geographic information servers and information of specific functions of each of the geographic information servers.
According to an embodiment of the invention, the information of image range of the index information includes items of a name of district of the geographic information, display range, display contents and maximum and minimum scales

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