Map information display system
First Claim
1. A map information display system comprising a plurality of portable radio terminals each including a display unit, and at least one system server connected to said portable radio terminals via a network and storing therein map image data and landmark data, wherein each said portable radio terminal has functions for transmitting information of a position of said portable radio terminal to said system server, receiving part of said landmark data and part of said map image data corresponding to said position of said portable radio terminal from said system server, and allowing said display unit to selectively represent icons of landmarks specified by said part of said landmark data overlapped with a map image specified by said part of said map image data.
1 Assignment
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Accused Products
Abstract
A portable radio terminal includes a GPS signal processor for determining the position of the portable radio terminal, and requests a system server to transmit map image data and landmark data in the vicinity of the portable radio terminal. The system server transmits the map image data and landmark data separately to allow the display unit of the portable radio terminal to represent desired landmarks overlapped with the map image on the display unit.
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Citations
17 Claims
- 1. A map information display system comprising a plurality of portable radio terminals each including a display unit, and at least one system server connected to said portable radio terminals via a network and storing therein map image data and landmark data, wherein each said portable radio terminal has functions for transmitting information of a position of said portable radio terminal to said system server, receiving part of said landmark data and part of said map image data corresponding to said position of said portable radio terminal from said system server, and allowing said display unit to selectively represent icons of landmarks specified by said part of said landmark data overlapped with a map image specified by said part of said map image data.
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9. A portable radio terminal comprising:
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a communication block for receiving part of map image data and part of landmark data via a network from a server connected to said communication block, said part of map image data and said part of landmark data corresponding to a position of said portable radio terminal;
a display unit for representing a map image specified by said part of said map image data; and
a control unit for controlling said display unit to selectively represent landmarks specified by said part of said landmark data, said landmarks being overlapped with said map image on said display unit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for supplying map information to a portable radio terminal comprising:
storing separately map image data and landmark data, said landmark data including information of a plurality of species of landmarks, coordinates of each of said landmarks, and a name of each of said landmarks;
specifying part of said map image data and part of said landmark data based information of a position of the portable radio terminal received therefrom; and
transmitting said specified part of said map image data and said specified part of said landmark data in a format to allow a display unit of the portable radio terminal to selectively represent icons of landmarks specified by said part of said landmark data while being overlapped with a map image specified by said part of said map image data.
Specification