Road surface image-drawing system for vehicle

Patent metadata

Field	Value
Publication number	US-10134283-B2
Application number	US-201515509259-A
Country	US
Kind code	B2
Filing date	Sep 7, 2015
Priority date	Sep 8, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

In this invention, letters that can be seen by a pedestrian (101) are drawn on an intersection (103). A mark (MM2) that can be seen by the driver of the host vehicle (C) is drawn on the road (104) between the intersection (103) and the host-vehicle (C). The shapes of the letters (MO4) are corrected in accordance with the positional relationship between the pedestrian (101) and the intersection (103). The shape of the mark (MM2) is corrected in accordance with the positional relationship between the driver of the host-vehicle (C) and the road (104).

First claim

The invention claimed is:

1. A road surface image-drawing system mounted on a vehicle comprising:
an image-drawing device configured to perform image drawing so as to draw a first display to be visible to a driver of the vehicle at a first position and draw a second display to be visible to a person other than the driver at a second position different from the first position,
a control device configured to correct a shape of the first display according to a positional relationship between the first position and the driver and correct a shape of the second display according to a positional relationship between the second position and the person other than the driver, and
a pedestrian risk determination unit configured to acquire a pedestrian distance which is a distance from a pedestrian to the vehicle, and a pedestrian braking distance which is a braking distance from the pedestrian to the vehicle,
wherein the control device is further configured to control the image drawing device according to a normal mode when it is determined that the pedestrian distance is equal to or greater than the pedestrian braking distance, and control the image drawing device according to an emergency mode when the pedestrian distance is less than the pedestrian braking distance.

2. The road surface image-drawing system according to claim 1 ,
wherein the first position and the second position are on a road.

3. The road surface image-drawing system according to claim 2 ,
wherein the first position is on the road located between an intersection and the vehicle, and
wherein the second position is on the intersection.

4. The road surface image-drawing system according to claim 3 ,
wherein the information included in the first display and the information included in the second display are related to each other.

5. The road surface image-drawing system according to claim 2 ,
wherein the information included in the first display and the information included in the second display are related to each other.

6. The road surface image-drawing system according to claim 1 ,
wherein the first position is on a windshield of the vehicle, and
wherein the second position is on a road.

7. The road surface image-drawing system according to claim 6 ,
wherein the information included in the first display and the information included in the second display are related to each other.

8. The road surface image-drawing system according to claim 1 ,
wherein the information included in the first display and the information included in the second display are related to each other.

9. The road surface image-drawing system according to claim 1 ,
wherein at least one of the first display and the second display is displayed at a higher frequency when the image drawing device is controlled according to the emergency mode than when the image drawing device is controlled according to the normal mode.

10. The road surface image-drawing system according to claim 1 ,
wherein at least one of the first display and the second display is displayed at an increased brightness when the image drawing device is controlled according to the emergency mode than when the image drawing device is controlled according to the normal mode.

11. The road surface image-drawing system according to claim 1 ,
wherein at least one of the first display and the second display is displayed with a different color sense when the image drawing device is controlled according to the emergency mode than when the image drawing device is controlled according to the normal mode.

12. The road surface image-drawing system according to claim 1 ,
wherein the control device is configured to correct the shape of the first display and to correct the shape of the second display according to a trapezoidal distortion correction.

13. A road surface image-drawing system mounted on a vehicle comprising:
an image-drawing device configured to draw a first display to be visible to a driver of the vehicle at a first position and draw a second display to be visible to a person other than the driver at a second position different from the first position,
a vehicle data acquisition unit configured to receive data on a speed of the vehicle, a steering angle of the vehicle, an acceleration of the vehicle, a traveling direction of the vehicle, a braking of the vehicle, a navigation of the vehicle, and an illuminance of a surrounding environment of the vehicle,
a traveling environment determination unit configured to determine whether image-drawing by the image-drawing device is possible based on the data received by the vehicle data acquisition unit, wherein the traveling environment determination unit is further configured to permit image-drawing by the image-drawing device when it is determined that image-drawing is possible, and prohibit image-drawing by the image-drawing device when it is determined that image-drawing is not possible, and
a control device configured to correct a shape of the first display according to a positional relationship between the first position and the driver and correct a shape of the second display according to a positional relationship between the second position and the person other than the driver.

Assignees

• Koito Mfg Co Ltd

Inventors

• Masuda Takeshi
• Hayakawa Michihiko
• Shibata Yuichi
• Yagi Takayuki
• Nakazawa Misako
• Tsuda Toshiaki
• Tanaka Hidetada
• Yamamura Satoshi

Classifications

• G08G1/16

  Anti-collision systems (road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08) · CPC title

• G08G1/0962

  having an indicator mounted inside the vehicle, e.g. giving voice messages · CPC title

• B60R21/00

  Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks (safety belts or body harnesses in vehicles B60R22/00; seats constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats, B60N2/42; energy-absorbing arrangements for hand wheels for steering vehicles B62D1/11; energy-absorbing arrangements for vehicle steering columns B62D1/19) · CPC title

• B60Q1/26

  the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic · CPC title

• B60Q1/50

  for indicating other intentions or conditions, e.g. request for waiting or overtaking · CPC title