Communication navigation system and method, program storage device and computer data signal embodied in carrier wave
First Claim
1. A communication navigation system comprising:
- a communication center apparatus; and
a communication navigation terminal, both of which transmit and receive information by a two-way communication through a communication network, (i) said communication center apparatus comprising;
a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
a search device for searching, by the predetermined algorithm, for a route heading to the destination from the current position, on the basis of the map database information including the information for the route search, from the destination and the current position received through the communication network; and
a center side wireless device for wirelessly transmitting route information indicating the searched route through the communication network, (ii) said communication navigation terminal comprising;
a measurement device for measuring the current position;
a terminal side wireless device for transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation device for selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
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Accused Products
Abstract
A communication navigation system is provided with a communication navigation terminal (5) and a communication center apparatus (3) with a communication network (2) for connecting them. The communication navigation terminal is provided with a route navigation device (20, 40, 50). If a movable body is on a route searched by the communication center apparatus, it performs a route navigation on the basis of a current position measured by a measurement apparatus (10, 18) and route information received from the communication center apparatus. If the movable body deviates from the searched route, it performs a simple navigation, in case that the current position is out of a service area of the communication navigation system, where it is not possible to transmit and receive the information through the communication network.
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Citations
29 Claims
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1. A communication navigation system comprising:
- a communication center apparatus; and
a communication navigation terminal, both of which transmit and receive information by a two-way communication through a communication network,(i) said communication center apparatus comprising;
a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
a search device for searching, by the predetermined algorithm, for a route heading to the destination from the current position, on the basis of the map database information including the information for the route search, from the destination and the current position received through the communication network; and
a center side wireless device for wirelessly transmitting route information indicating the searched route through the communication network, (ii) said communication navigation terminal comprising;
a measurement device for measuring the current position;
a terminal side wireless device for transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation device for selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- a communication center apparatus; and
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24. A communication navigation terminal for transmitting and receiving information by a two-way communication through a communication network with respect to a communication center apparatus provided with:
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
(ii) a search device for searching, by the predetermined algorithm, for a route heading to the destination from the current position, on the basis of the map database information including the information for the route search, from the destination and the current position received through the communication network; and
(iii) a center side wireless device for wirelessly transmitting route information indicating the searched route through the communication network,said communication navigation terminal comprising;
a measurement device for measuring the current position;
a terminal side wireless device for transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation device for selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
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25. A program storage device readable by a computer in a communication navigation system for tangibly embodying a program of instructions executable by the computer to perform method processes of communication navigation at a communication navigation terminal for transmitting and receiving information by a two-way communication through a communication network with respect to a communication center apparatus provided with:
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
(ii) a search device for searching, by the predetermined algorithm, for a route heading to the destination from the current position, on the basis of the map database information including the information for the route search, from the destination and the current position received through the communication network; and
(iii) a center side wireless device for wirelessly transmitting route information indicating the searched route through the communication network,said method processes comprising;
a measurement process of measuring the current position;
a terminal side wireless process of transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation process of selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
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26. A computer data signal embodied in a carrier wave and representing a series of instructions which cause a computer in a communication navigation system to perform method processes of communication navigation at a communication navigation terminal for transmitting and receiving information by a two-way communication through a communication network with respect to a communication center apparatus provided with:
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
(ii) a search device for searching, by the predetermined algorithm, for a route heading to the destination from the current position, on the basis of the map database information including the information for the route search, from the destination and the current position received through the communication network; and
(iii) a center side wireless device for wirelessly transmitting route information indicating the searched route through the communication network,said method processes comprising;
a measurement process of measuring the current position;
a terminal side wireless process of transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation process of selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- (i) a map database for storing therein map database information including information for a route search, which enables the route search from a current position of a movable body to a destination by a predetermined algorithm;
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27. A program storage device readable by a computer for tangibly embodying a program of instructions executable by the computer to perform method processes of communication navigation in a communication navigation system, said system comprising:
- a communication center apparatus; and
a communication navigation terminal, both of which transmit and receive information by a two-way communication through a communication network,said method processes comprising;
(i) at said communication center apparatus, a search process of searching, by a predetermined algorithm, for a route heading to a destination from a current position, from the destination and the current position received through the communication network, on the basis of a map database for storing therein map database information including information for a route search, which enables the route search from the current position of a movable body to the destination by the predetermined algorithm; and
a center side wireless process of wirelessly transmitting route information indicating the searched route through the communication network, and (ii) at said communication navigation terminal, a measurement process of measuring the current position;
a terminal side wireless process of transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation process of selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- a communication center apparatus; and
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28. A computer data signal embodied in a carrier wave and representing a series of instructions which cause a computer to perform method processes of communication navigation in a communication navigation system, said system comprising:
- a communication center apparatus; and
a communication navigation terminal, both of which transmit and receive information by a two-way communication through a communication network,said method processes comprising;
(i) at said communication center apparatus, a search process of searching, by a predetermined algorithm, for a route heading to a destination from a current position, from the destination and the current position received through the communication network, on the basis of a map database for storing therein map database information including information for a route search, which enables the route search from the current position of a movable body to the destination by the predetermined algorithm; and
a center side wireless process of wirelessly transmitting route information indicating the searched route through the communication network, and (ii) at said communication navigation terminal, a measurement process of measuring the current position;
a terminal side wireless process of transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation process of selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- a communication center apparatus; and
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29. A communication navigation method executed in a communication navigation system comprising:
- a communication center apparatus; and
a communication navigation terminal, both of which transmit and receive information by a two-way communication through a communication network,said method comprising;
(i) at said communication center apparatus, a search process of searching, by a predetermined algorithm, for a route heading to a destination from a current position, from the destination and the current position received through the communication network, on the basis of a map database for storing therein map database information including information for a route search, which enables the route search from the current position of a movable body to the destination by the predetermined algorithm; and
a center side wireless process of wirelessly transmitting route information indicating the searched route through the communication network, and (ii) at said communication navigation terminal, a measurement process of measuring the current position;
a terminal side wireless process of transmitting the measured current position and receiving the transmitted route information through the communication network; and
a route navigation process of selectively performing a route navigation on the searched route on the basis of the measured current position and the received route information or performing a simple navigation with a lower accuracy than that of the route navigation on a route other than the searched route on the basis of the measured current position.
- a communication center apparatus; and
Specification