| 摘要 |
PROBLEM TO BE SOLVED: To provide a system with a small process load, when a map server sends a map. SOLUTION: An arrangement information transmitting means 15, when it receives an instruction requesting arrangement information, sends the arrangement information. A receiving and storing means 7 receives and stores the arrangement information. When an operator enters display area, an individual map data transmission request output means 11 specifies necessary individual map data according to the display area and arrangement information and outputs a request to send the necessary individual map data. An individual map data transmitting means 19, once it receives this request, transmits the corresponding individual map data. A display means 13 receives and displays the transmitted individual map data. A 1st information providing computer 20 does not need to decide which individual map data should be transmitted.
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