NAVIGATION SYSTEM, PORTABLE TERMINAL DEVICE, AND IN-VEHICLE DEVICE

• US 20100223006A1
• Filed: 10/22/2008
• Published: 09/02/2010
• Est. Priority Date: 10/22/2007
• Status: Active Grant

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Sasaki, Mitsuru
• Granted Patent: US 8,442,768 B2
• Time in Patent Office: Days
• US Class Current: 701/209
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01C 21/3688 Systems comprising multiple parts or multiple output devices (not client-server), e.g. detachable faceplates, key fobs or multiple output screens
• CPC Class Codes: G08G 1/0969 having a display in the form of a map

Abstract

A navigation system is configured such that: an in-vehicle device collects and provides position information and movement information of a vehicle to a portable terminal device, and displays image data sent from the portable terminal device; and the portable terminal device acquires map information from a map center device based on the position information and the movement information sent from the in-vehicle device, calculates an actual location of the vehicle based on the position information and the movement information sent from the in-vehicle device, and generates image data in which the calculated actual location is superposed on the acquired map information.

Claims

1. A navigation system for providing route information including an actual location of a vehicle, the navigation system comprising an in-vehicle device mounted on the vehicle and a portable terminal device carried by a passenger, wherein

the in-vehicle device including

a vehicle-information providing unit that collects and provides position information and movement information of the vehicle to the portable terminal device, and

a display unit that displays image data sent from the portable terminal device, and

the portable terminal device including

a map-information acquiring unit that acquires map information from a map center device based on the position information and the movement information sent from the vehicle-information providing unit of the in-vehicle device,

an actual-location calculating unit that calculates the actual location of the vehicle based on the position information and the movement information sent from the vehicle-information providing unit of the in-vehicle device, and

an image-data generating unit that generates the image data in which the actual location calculated by the actual-location calculating unit is superposed on the map information acquired by the map-information acquiring unit.

2. The navigation system according to claim 1, wherein

the map-information acquiring unit of the portable terminal device determines the scale size of the map information which is acquired from the map center device based on vehicle speed included in the movement information.

3. The navigation system according to claim 2, wherein

the map-information acquiring unit of the portable terminal device determines the scale size of the map information according to a value of the scale size specified in advance corresponding to each speed range, the speed range being a predetermined range of the vehicle speed.

4. The navigation system according to claim 2, wherein

the map-information acquiring unit of the portable terminal device determines the scale size of the map information so that an update interval of the map information is fixed.

5. The navigation system according to claim 2, wherein

the map-information acquiring unit of the portable terminal device determines the scale size of the map information so that information charge for the map information is equal to or smaller than a predetermined amount.

6. The navigation system according to claim 1 wherein

the image-data generating unit of the portable terminal device rotates the image data based on a moving direction of the vehicle calculated based on a history of the position information sent from the vehicle-information providing unit of the in-vehicle device.

7. The navigation system according to claim 1, wherein

the image-data generating unit of the portable terminal device superposes an operation unit for accepting an operation by the passenger on the image data, and sets operation restraint of the operation unit based on the movement information sent from the vehicle-information providing unit of the in-vehicle device.

8. The navigation system according to claim 1, wherein

the vehicle-information providing unit of the in-vehicle device collects and provides traffic information received by the vehicle to the portable terminal device, and

the image-data generating unit of the portable terminal device superposes the traffic information on the image data.

9. The navigation system according to claim 1, wherein

the vehicle-information providing unit of the in-vehicle device collects and provides fault information of the vehicle to the portable terminal device, and

the portable terminal device further includes a fault notifying unit that notifies a help center device of the fault information sent from the vehicle-information providing unit of the in-vehicle device.

10. A portable terminal device for providing route information including actual location of a vehicle in cooperation with an in-vehicle device mounted on the vehicle, the portable terminal device comprising:

a map-information acquiring unit that acquires map information from a map center device based on position information and movement information of the vehicle collected by the in-vehicle device;

an actual-location calculating unit that calculates an actual location of the vehicle based on the position information and the movement information collected by the in-vehicle device;

an image-data generating unit that generates image data by superposing the actual location calculated by the actual-location calculating unit on the map information acquired by the map-information acquiring unit; and

an image-data providing unit that provides the image data generated by the image-data generating unit to the in-vehicle device.

11. An in-vehicle device for providing route information including an actual location of a vehicle in cooperation with a portable terminal device carried by a passenger, the in-vehicle device comprising:

a vehicle-information providing unit that collects and provides position information and movement information of the vehicle to the portable terminal device; and

a display unit that displays image data sent from the portable terminal device.