Navigation apparatus and server apparatus
First Claim
1. A navigation apparatus comprising a map information storage section for storing map information acquired from a server apparatus, wherein, if continuous map information from a start location to a destination location is not stored in the map information storage section, the navigation apparatus transmits the start location and the destination location to the server apparatus in order to acquire therefrom map information of unit areas that covers a rectangular area of which two diagonal vertices coincide with the start and destination locations. The navigation apparatus then storing the acquired map information in the map information storage section.
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Accused Products
Abstract
A navigation apparatus acquires geographic information from a server apparatus. When the navigation apparatus does not store any geographic information that provides a continuous route from the starting point to a destination point, it transmits data of the starting point and destination point to the server apparatus to acquire therefrom geographic information that provides a continuous route from the starting point to the destination point. This efficient acquisition of geographic information realizes reduction of communication time and communication costs.
73 Citations
31 Claims
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1. A navigation apparatus comprising a map information storage section for storing map information acquired from a server apparatus,
wherein, if continuous map information from a start location to a destination location is not stored in the map information storage section, the navigation apparatus transmits the start location and the destination location to the server apparatus in order to acquire therefrom map information of unit areas that covers a rectangular area of which two diagonal vertices coincide with the start and destination locations. The navigation apparatus then storing the acquired map information in the map information storage section.
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2. (canceled)
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10. A navigation apparatus comprising a map information storage section for storing map information acquired from a server apparatus,
wherein continuous map information from a start location to a destination location is stored in the map information storage section, and, if there exists any other continuous combination, the navigation apparatus transmits the start location and the destination location to the server apparatus in order to acquire therefrom map information consisting of unit areas that covers a rectangular area of which two diagonal vertices coincide with the start and destination locations, the navigation apparatus then storing the acquired map information in the map information storage section.
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18. A navigation apparatus comprising a map information storage section for storing map information acquired from a server apparatus,
wherein, if continuous map information from a start location to a destination location is stored in the map information storage section, a route is searched for, and the navigation apparatus acquires from the server apparatus map information consisting of unit areas that covers an area including and neighboring the retrieved route, the navigation apparatus then storing the acquired map information in the map information storage section
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26. (canceled)
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27. (canceled)
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28. A navigation apparatus comprising:
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receiving means for receiving from a server apparatus one or more items of guide information containing time restricting data, location data, and guide data;
map information;
current location detecting means for detecting a current location;
controlling means for predicting, based on the time restricting data and location data received, a time at which a target location of route guiding will be reached, and for permitting only guide data of whichever item of guide information has time restricting data that fulfills the predicted time.
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29. (canceled)
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30. A server apparatus for transmitting map information to a navigation apparatus,
wherein, when the server apparatus receives from the navigation apparatus a start location and a destination location, the server apparatus transmits to the navigation apparatus map information consisting of unit areas that covers a rectangular area of which two diagonal vertices coincide with the start and destination locations.
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31. (canceled)
Specification