Driving assist system and vehicle-mounted apparatus

• US 20080215232A1
• Filed: 02/28/2008
• Published: 09/04/2008
• Est. Priority Date: 03/02/2007
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kitagawa, Eiji, Ikeda, Takuro, Miyata, Ryosuke, Fukuoka, Toshiyuki, Okuyama, Kyouko
• Granted Patent: US 8,265,861 B2
• Time in Patent Office: Days
• US Class Current: 701/117
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: G08G 1/164 Centralised systems, e.g. external to vehicles

Abstract

There is provided a driving assist system comprising: a road side apparatus which transmits the traffic circumstance information; and a vehicle-mounted apparatus including: an outputting part which outputs driving assist information for assisting a driving operation on the basis of output data on the basis of the at least one kind of the traffic circumstance information; and a controller for: generating the output data for outputting the driving assist information based on the traffic circumstance information; determining whether the output data is valid; and selecting one the output data which is determined as valid, on the basis of a predetermined standard validity, wherein the outputting part outputs the driving assist information using the selected output data.

Claims

1. A driving assist system comprising:

a road side apparatus which is located in a road side, obtains traffic circumstance information of the road and transmits the traffic circumstance information containing at least one kind of information representative of the obtained traffic circumstance information; and

a vehicle-mounted apparatus, which is mounted in a vehicle, including;

a communicating part which receives the transmitted traffic circumstance information;

an outputting part which outputs driving assist information for assisting a driving operation on the basis of output data on the basis of the at least one kind of the traffic circumstance information; and

a controller capable of performing the operations of

generating the output data which contains at least one kind of data for outputting the driving assist information on the basis of the received traffic circumstance information at each time of receiving the traffic circumstance information;

deriving at least one kind of information from the generated output data in accordance with output validity concerning the respective generated output data;

determining whether each of the output data is valid, on the basis of the respective derived information according to the validity of the respective output data; and

selecting one kind of the outputting data which is determined as valid, on the basis of a predetermined standard validity,

wherein the outputting part outputs the driving assist information using the selected one of the at least one kind of the output data.

2. The driving assist system according to claim 1, wherein

the traffic circumstance information includes reliability information representative of reliability, and

the selecting operation includes selecting the outputting data on the basis of the reliability represented by the reliability information included in the traffic circumstance information.

3. The driving assist system according to claim 2, wherein

the road side apparatus further comprises:

a position detecting part which detects positions of vehicles;

a controller capable of performing the operation of detecting accuracy of the detected positions; and

a communicating part which transmits the traffic circumstance information including both position information representative of the detected positions and the reliability information representative of the detected accuracy.

4. A vehicle-mounted apparatus mounted in a vehicle, comprising:

a communicating part which receives, from an outside, at least one kind of traffic circumstance information representative of traffic circumstance information of the road;

an outputting part which outputs driving assist information containing at least kind of information for assisting a driving operation on the basis of the received traffic circumstance information; and

a controller capable of performing the operations of;

generating output data which contains at least kind of information for outputting the driving assist information, every time receiving the traffic circumstance information;

deriving at least one kind of information in accordance with output validity concerning the respective generated outputting data;

determining whether each of the outputting data is valid, on the basis of the respective derived information according to the validity of the output concerning the respective output data; and

selecting one kind of the outputting data which is determined as valid, on the basis of a predetermined standard validity,

wherein the outputting part outputs the driving assist information using the selected one kind of the outputting data.

5. The vehicle-mounted apparatus according to claim 4, wherein

in the selecting operation, the controller selects one kind of the outputting data which is determined as valid, on the basis of a predetermined priority.

6. The vehicle-mounted apparatus according to claim 4, wherein

the traffic circumstance information includes video information concerning a video, and

the controller, in the operation of generating, generates video output data which the outputting part uses for outputting the video as the driving assist information on the basis of the video information.

7. The vehicle-mounted apparatus according to claim 4, wherein

the traffic circumstance information includes position information concerning positions of other vehicles, and

the controller, in the operation of generating, generates position output data which the outputting part uses for outputting an image representative of the positions of the other vehicles as the driving assist information on the basis of the position information.

8. The vehicle-mounted apparatus according to claim 4, wherein

the traffic circumstance information includes position information concerning position of at least one other vehicle, and

the controller, in the operation of generating, generates position outputting data which the outputting part uses for outputting information representative of presence of the position of the at least one other vehicle as the driving assist information on the basis of the position information.

9. The vehicle-mounted apparatus according to claim 4, wherein

reliability information representative of reliability is added to the traffic circumstance information, and

the controller, in the operation of deriving, derives at least one kind of information in according with output validity concerning the respective outputting data on the basis of the reliability information added to the traffic circumstance information.

10. The vehicle-mounted apparatus according to claim 4, wherein

the controller, in the operation of deriving, derives at least one kind of information in accordance with output validity concerning the respective outputting data on the basis of receiving situation.

11. The vehicle-mounted apparatus according to claim 4, further comprising a circumstance detecting part which obtain circumstances of the vehicle which mounts the vehicle-mounted apparatus, wherein

the controller, in the operation of deriving, derives at least one kind of information in accordance with output validity concerning the respective outputting data on the basis of the obtained circumstances of the vehicle.

12. The vehicle-mounted apparatus according to claim 4, further comprising an own position detecting part which detects a position of the vehicle which mounts the vehicle-mounted apparatus, wherein

the controller, in the operation of deriving, derives at least one kind of information in accordance with output validity concerning the respective outputting data on the basis of the obtained position of the vehicle.

13. The vehicle-mounted apparatus according to claim 4, further comprising a table in which each of the outputting data relates to reliability, wherein

the controller, in the selecting operation, selects the at least one kind of the outputting data related to the reliability on the basis of the table.

14. The vehicle-mounted apparatus according to claim 9, wherein

the traffic circumstance information includes position information representative of the positions of other vehicles, and

the reliability information corresponds to accuracy of the position which the position information represents.

15. The vehicle-mounted apparatus according to claim 10, further comprising a timer part representative of time of day, wherein

the traffic circumstance information includes time information representative of time of the day, and

one of the at least one kind of the information in accordance with the output validity concerning the respective outputting data corresponds to a time delay which is a difference between the time of the day which the time information represents and reception time of the day at which the traffic circumstance information is received.

16. The vehicle-mounted apparatus according to claim 10, wherein

the traffic circumstance information includes position information representative of the position of at least one other vehicle, and

one of the at least one kind of the information in accordance with the output validity concerning the respective at least one kind of the outputting data corresponds to an update frequency of the position information.

17. The vehicle-mounted apparatus according to claim 10, wherein

the traffic circumstance information includes video outputting data which the outputting part uses for outputting a video as the driving assist information, and

one of the at least one kind of the information in accordance with the output validity concerning the respective output data corresponds to an update frequency of the video in accordance with the video output data.

18. The vehicle-mounted apparatus according to claim 11, wherein

the circumstance detecting part detects speeds of the respective vehicle as one of the circumstances of the vehicles.

19. The vehicle-mounted apparatus according to claim 11, wherein

the circumstance detecting part detects, as the circumstances of the vehicles, an on/off of a headlamp and/or an on/off of a wiper.

20. A driving assist system comprising:

a road side apparatus which is located in a road side, obtains a traffic circumstance and transmits at least one kind of traffic circumstance information representative of the obtained traffic circumstance; and

a vehicle-mounted apparatus, which is mounted in a vehicle, receives the transmitted at least one kind of traffic circumstance information and outputs at least one kind of driving assist information for assisting a driving operation, including;

a plurality of kinds of processing performing means each of which outputs a kind of the driving assist information different from one another;

means which derives at least one kind of information concerning validity of the plurality of kinds of the processing performing means every time receiving the traffic circumstance information;

selecting means which determines the validity of the plurality of kinds of the processing performing means on the basis of the derived at least one kind of information concerning the validity of the plurality of kinds of processing performing means and then, on the basis of a predetermined standard, selects one of the plurality of kinds of processing performing means, the one being determined as being valid; and

means which outputs the at least one kind of driving assist information from the selected one of the plurality of kinds of processing performing means.