Communication navigation system, communication navigation method, terminal unit, and route guidance information transmitting apparatus

• US 20030028313A1
• Filed: 07/31/2002
• Published: 02/06/2003
• Est. Priority Date: 08/01/2001
• Status: Active Grant

• Current Assignee: Increment P Corporation (Pioneer Corporation), Pioneer Corporation
• Original Assignee: Increment P Corporation (Pioneer Corporation), Pioneer Corporation
• Inventors: Miyahara, Hiroshi, Nagamune, Akira
• Granted Patent: US 6,778,901 B2
• Time in Patent Office: Days
• US Class Current: 701/202
• CPC Class Codes: G01C 21/3626 Details of the output of route guidance instructions traffic control systems for road vehicles involving transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/005 including pedestrian guidance indicator
• CPC Class Codes: G08G 1/0969 having a display in the form of a map
• CPC Class Codes: G09B 29/10 Map spot or coordinate position indicators; Map reading aids optical projection apparatus per se G03B

Abstract

A communication navigation system includes a server that transmits items of route guidance information to each of terminal units via the Internet, a processing subsystem, provided in each terminal unit, for determining whether or not the items of route guidance information from the server are necessary, a display subsystem for performing guidance using only one or more items of route guidance information determined to be necessary by the processing subsystem, and a speech output subsystem.

Claims

1. A communication navigation system that performs navigation, using map data stored in a map database site and current position data about navigation terminals, by transmitting the map data to the navigation terminals via a communication network, the communication navigation system comprising:

a route guidance information transmitting device which transmits items of route guidance information to each of the navigation terminals via the communication network;

a determining device, provided at each of the navigation terminals, which determines whether or not the items of route guidance information transmitted by the route guidance information transmitting device are necessary; and

a guidance device which performs guidance using only one or more items of route guidance information determined to be necessary by the determining device.

2. The communication navigation system according to claim 1, further comprising an input device which accepts an input of one or more items of route guidance information to be determined to be necessary by the determining device.

3. A communication navigation method for performing navigation, using map data stored in a map database site and current position data about navigation terminals, by transmitting the map data to the navigation terminals via a communication network, the communication navigation method comprising:

a route guidance information transmitting process for transmitting items of route guidance information to each of the navigation terminals via the communication network;

a determining process, performed by each of the navigation terminals, for determining whether or not the items of route guidance information transmitted by the route guidance information transmitting process are necessary; and

a guidance process for performing guidance using only one or more items of route guidance information determined to be necessary by the determining process.

4. The communication navigation method according to claim 3, further comprising an input process for accepting an input of one or more items of route guidance information to be determined to be necessary by the determining process.

5. A terminal unit that executes a communication navigation method for performing navigation, using map data stored in a map database site and current position data about navigation terminals, by transmitting the map data to the navigation terminals via a communication network, the terminal unit comprising:

a determining device which determines whether or not the items of route guidance information transmitted by a route guidance information transmitting device are necessary, the route guidance information transmitting device in the map database site, which transmits items of route guidance information to each of the navigation terminals via the communication network; and

a guidance device which performs guidance using only one or more items of route guidance information determined to be necessary by the determining device.

6. The terminal unit according to claim 5, further comprising an input device for accepting an input of one or more items of route guidance information to be determined to be necessary by the determining device.

7. A route guidance information transmitting device that executes a communication navigation method for performing navigation, using map data stored in a map database site and current position data about navigation terminals, by transmitting the map data to the navigation terminals via a communication network, wherein

the route guidance information transmitting device which transmits items of route guidance information to each of the navigation terminals via the communication network, the navigation terminals comprising:

a determining device for determining whether or not the items of route guidance information transmitted by the route guidance information transmitting device are necessary; and

a guidance device for performing guidance using only one or more items of route guidance information determined to be necessary by the determining device.