A communication terminal transmits a route search request for a destination to a server device and obtains a route searched from the server device. The terminal requests the server device for guidance information after starting up the communication terminal, the guidance information being used to provide movement guidance for a mobile unit and being targeted for at least an update target area around a current location among update target areas, the update target areas being areas whose terminal-side map information included in the communication terminal is an older version of map information than device-side map information included in the server device. The terminal receives the guidance information transmitted from the server device in response to the request for the guidance information, and provides movement guidance for the mobile unit using a guidance route set on the communication terminal and the received guidance information.
COMMUNICATION TERMINAL, SERVER DEVICE, MOVEMENT GUIDANCE SYSTEM, AND COMPUTER PROGRAM
2021-09-09
Patent
Electronic Resource
English
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