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AssigneesXanavi Informatics Corporation, Hitachi, Ltd., HCX Corporation
InventorsKimiyoshi Machii, Yoshinori Endo, Shinichi Amaya, Akio Sumizawa
Estimating the term…
Upon receiving a request from a vehicle-mounted device 100, a distribution center 200 executes a recommend route calculation and a guide calculation and transmits recommended route information and the data size of guide information to the vehicle-mounted device 100. The vehicle-mounted device 100 calculates the estimated download time based upon the size of the guide information and displays it. If the driver requests a split download, the vehicle-mounted device 100 outputs a split-download instruction to the distribution center 200. The distribution center 200 transmits to the vehicle-mounted device 100 guide information to be used to guide the vehicle from the start point to the first guidance-requiring intersection. While executing the route guide processing, the vehicle-mounted device 100 downloads the remaining guide information in the background.
-15. (canceled)
A route guidance method for providing route guidance by exchanging information related to a recommended route from a start point to a destination between an information terminal and an information distribution center, comprising in sequence:
A route guidance method for providing route guidance by engaging an information terminal that transmits information indicating a start point and a destination to an information distribution center and the information distribution center that obtains through a search calculation route guide information for a route from the start point to the destination, splits results of the search calculation and transmits the search calculation results to the information terminal in installments when a predetermined condition exists, comprising in sequence:
A route guidance method for providing route guidance by exchanging information related to a recommended route from a start point to a destination between an information terminal and an information distribution center, comprising in sequence:
A route guidance method for providing route guidance by exchanging information related to a recommended route from a start point to a destination between an information terminal and an information distribution center, comprising in sequence:
A route guidance method for providing route guidance by exchanging information related to a recommended route from a start point to a destination between an information terminal and an information distribution center, comprising in sequence:
Dependencies are inferred from the claim text.