Method and system for converting positioning signals of different coordinate systems to prescribed coordinate system
First Claim
Patent Images
1. A coordinate conversion method comprising the steps of:
- a) receiving a positioning signal of a coordinate system from a user terminal;
b) identifying said coordinate system of the received signal; and
c) performing a coordinate conversion on the received positioning signal according to the identified coordinate system so that the received positioning signal is converted to a positioning signal of a prescribed coordinate system.
1 Assignment
0 Petitions
Accused Products
Abstract
In a local information server, a number of coordinate converters are respectively associated with positioning signals of different coordinate systems. Each converter performs a coordinate conversion on the associated positioning signal so that the latter is converted to a positioning signal of a prescribed coordinate system, so that when a positioning signal is received from a user terminal, it is supplied to one of the coordinate converters corresponding to its coordinate system. The converted positioning signal is used to retrieve local information from a database. The retrieved data is then transmitted to the user terminal.
21 Citations
25 Claims
-
1. A coordinate conversion method comprising the steps of:
-
a) receiving a positioning signal of a coordinate system from a user terminal;
b) identifying said coordinate system of the received signal; and
c) performing a coordinate conversion on the received positioning signal according to the identified coordinate system so that the received positioning signal is converted to a positioning signal of a prescribed coordinate system. - View Dependent Claims (2, 3, 4)
-
-
5. A method of providing a local information from a database, comprising:
-
a) receiving a positioning signal of a coordinate system from a user terminal;
b) identifying said coordinate system of the received signal;
c) performing a coordinate conversion on the received positioning signal according to the identified coordinate system so that the received positioning signal is converted to a positioning signal of a prescribed coordinate system; and
d) retrieving local information from said database in accordance with the converted positioning signal and transmitting the retrieved information to said user terminal. - View Dependent Claims (6, 7, 8, 9)
-
-
10. A coordinate conversion system comprising:
-
a plurality of coordinate converters respectively associated with positioning signals of different coordinate systems, each converter performing a coordinate conversion on the associated positioning signal so that the associated positioning signal is converted to a positioning signal of a prescribed coordinate system; and
converter selection circuitry for receiving a positioning signal from a user terminal, and supplying the received signal to one of said coordinate converters corresponding to the coordinate system of the received signal. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A local information server comprising:
-
a database;
data retrieval circuitry for retrieving local information from said database in accordance with an input signal applied thereto and transmitting the retrieved information to a user terminal;
a plurality of coordinate converters respectively associated with positioning signals of different coordinate systems, each converter performing a coordinate conversion on the associated positioning signal so that the associated positioning signal is converted to a positioning signal of a prescribed coordinate system; and
converter selection circuitry for receiving a positioning signal from said user terminal, and supplying the received signal to one of said coordinate converters corresponding to the coordinate system of the received signal and applying the converted positioning signal to said data retrieval circuitry as said input signal. - View Dependent Claims (16, 17, 18, 19, 20)
-
-
21. A computer readable storage medium comprising steps of computer executable steps of:
-
a) receiving a positioning signal of a coordinate system from a user terminal;
b) identifying said coordinate system of the received signal;
c) performing a coordinate conversion on the received positioning signal to a positioning signal of a prescribed coordinate system according to the identified coordinate system; and
d) retrieving information from a database in accordance with the converted positioning signal and transmitting the retrieved information to said user terminal. - View Dependent Claims (22, 23, 24, 25)
-
Specification