Device and method for displaying information in light illuminated area ahead of vehicle
AssigneeDenso Corporation
InventorYoshiaki Katsumi
Life of this patent
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Abstract
A device includes a DMD (digital mirror device) that displays an icon in an illuminated area on a road surface by controlling contrast of light generated by a light source for a headlight that illuminates ahead of vehicle, an in-cabin camera that obtains a driver's eye position, and a display control unit that controls a shape of the icon displayed by the DMD so that the shape of the icon is not distorted when viewed from the driver's eye position by using a difference between a reflection position of a reflected light by the DMD and the driver's eye position obtained by the in-cabin camera.
Claims9
A device comprising:
- a light source for a headlight that illuminates ahead of a vehicle;
- a display unit that displays an icon in an illuminated area illuminated by the light source by controlling contrast of light generated by the light source;
- an eye position obtaining unit that obtains a driver's eye position;
- a reflection position obtaining unit that obtains a reflection position of a reflected light, the reflection position being a position where the generated light is reflected by the display unit;
- and
- a display control unit configured to perform:
- a first process for obtaining a first relative positional relationship between the driver's eye position and the illuminated area and a second-relative positional relationship between the reflection position and the illuminated area:
- a second process for calculating an amount of correction of distortion caused by a difference between the first relative positional relationship and the second relative positional relationship;
- and
- a third process for correcting a shape of the icon displayed by the display unit based on the calculated amount of correction of distortion so that the shape of the icon is undistorted when viewed from the driver's eye position.
A method of displaying an icon in a device which includes a light source for a headlight that illuminates ahead of a vehicle, and a display unit that displays the icon in an illuminated area illuminated by the light source by controlling contrast of light generated by the light source, the method comprising:
- obtaining a driver's eye position;
- obtaining a reflection position of a reflected light by the display unit;
- and
- performing:
- a first process for obtaining a first relative positional relationship between the driver's eye position and the illuminated area and a second relative positional relationship between the reflection position and the illuminated area;
- a second process for calculating an amount of correction of distortion caused by a difference between the first relative positional relationship and the second relative positional relationship;
- and
- a third process for correcting a shape of the icon displayed by the display unit based on the calculated amount of correction of distortion so that the shape of the icon is undistorted when viewed from the driver's eye position.
Dependencies are inferred from the claim text.