Navigation system, navigation information providing server, and navigation server
First Claim
1. A navigation system for providing data from a server to a navigation terminal via a network, the navigation system comprising:
- the navigation terminal comprising a wireless communication device connected to the network by wireless communication to send and receive data, a present position detection device for detecting a present position of a movable body, and an instruction device for instructing a predetermined navigation function;
a navigation server for acquiring positional data corresponding to the detected present position via the network, discriminating map data to be a distribution object to the navigation terminal based on the positional data, and generating navigation information based on the instructed navigation function to provide it to the navigation terminal; and
a map search server having a memory device for accumulating map data and reading the map data discriminated as the distribution object from the memory device to distribute it to the navigation terminal via the network.
1 Assignment
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Accused Products
Abstract
A navigation terminal 2 loaded in a vehicle 1 is provided with a wireless communication device connectable to a movable communications network 3 and a present position detection device and instructs implementation of a predetermined navigation function. The gateway apparatus 4 connects the movable communications network 3 and the Internet 5 and implements protocol conversion and charging processing. A navigation server 6 acquires positional data of the vehicle 1 from the navigation terminal 2 via the Internet 5, discriminates map data to be a distribution object to the navigation terminal 2, and generates navigation information based on the instructed navigation function to provide it to the navigation terminal 2. A map search server 7 reads map data discriminated as the distribution object from a map data base 8 accumulating map data and distributes them to the navigation terminal 2 via the Internet 5.
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Citations
36 Claims
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1. A navigation system for providing data from a server to a navigation terminal via a network, the navigation system comprising:
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the navigation terminal comprising a wireless communication device connected to the network by wireless communication to send and receive data, a present position detection device for detecting a present position of a movable body, and an instruction device for instructing a predetermined navigation function;
a navigation server for acquiring positional data corresponding to the detected present position via the network, discriminating map data to be a distribution object to the navigation terminal based on the positional data, and generating navigation information based on the instructed navigation function to provide it to the navigation terminal; and
a map search server having a memory device for accumulating map data and reading the map data discriminated as the distribution object from the memory device to distribute it to the navigation terminal via the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A navigation information providing server for providing information including map data to a navigation terminal via a network, the navigation information providing server comprising:
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a generating device for generating navigation information based on navigation function instructed by the navigation terminal via the network;
a providing device for providing the generated navigation information to the navigation terminal;
an acquiring device for acquiring positional data corresponding to a present position of a movable body from the navigation terminal via the network;
a discriminating device for discriminating map data of a predetermined area of a point and the vicinity of it corresponding to the acquired positional data as a distribution object;
a map memory device for accumulating map data;
a reading device for reading the map data discriminated as the distribution object from the map memory device; and
a distributing device for distributing the read map data to the navigation terminal via the network. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A navigation information providing server for providing information including map data to a navigation terminal having a nonvolatile memory device for storing the map data acquired from the navigation information providing server via a network, the navigation information providing server comprising:
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a generating device for generating navigation information based on navigation function instructed by the navigation terminal via the network;
a providing device for providing the generated navigation information to the navigation terminal;
an acquiring device for acquiring positional data corresponding to a present position of a movable body from the navigation terminal via the network;
a discriminating device for discriminating map data of a predetermined area of a point and the vicinity of it corresponding to the acquired positional data as a distribution object;
a map memory device for accumulating map data;
a reading device for reading the map data discriminated as the distribution object from the map memory device;
a distributing device for distributing the read map data to the navigation terminal via the network; and
a table memory device for storing a management table including information about the map data distributed to the navigation terminal, wherein the discriminating device discriminates map data except the distributed map data as the distribution object with reference to the management table stored in the table memory table device. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A navigation server for providing navigation information to a navigation terminal via a network with which a map search server having a map memory device for accumulating map data is connected, the navigation server comprising:
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a generating device for generating navigation information based on navigation function instructed by the navigation terminal via the network;
a providing device for providing the generated navigation information to the navigation terminal;
an acquiring device for acquiring positional data corresponding to a present position of a movable body from the navigation terminal via the network; and
a discriminating device for discriminating map data of a predetermined area of a point and the vicinity of it corresponding to the acquired positional data as a distribution object by the map search server. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A navigation server for providing navigation information to a navigation terminal having a nonvolatile memory device in which the map data acquired from a map search server via a network, the navigation server comprising:
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a generating device for generating navigation information based on navigation function instructed by the navigation terminal via the network;
a providing device for providing the generated navigation information to the navigation terminal;
an acquiring device for acquiring positional data corresponding to a present position of a movable body from the navigation terminal via the network;
a discriminating device for discriminating map data of a predetermined area of a point and the vicinity of it corresponding to the acquired positional data as a distribution object by the map search server; and
a table memory device for storing a management table including information about the map data distributed to the navigation terminal, wherein the discriminating device discriminates map data except the distributed map data as the distribution object with reference to the management table stored in the table memory device. - View Dependent Claims (33, 34, 35, 36)
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Specification