Image display apparatus and image display adjusting method

Patent metadata

Field	Value
Publication number	US-9794531-B2
Application number	US-201615276266-A
Country	US
Kind code	B2
Filing date	Sep 26, 2016
Priority date	Mar 28, 2014
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

The rendering control unit controls the laser light source unit in such a way that a display image is rendered in a range smaller than a scan range of the scan mirror unit based on input display image data. The detection unit detects a range to be a reference for setting a laser beam output position for adjusting an output of the laser beams based on the display image data. The output adjusting control unit controls the laser light source unit in such a way that the laser beams for adjusting an output of the laser beams are output at a position outside the range where the display image is rendered in the scan range of the scan mirror unit, and the position is based on the range detected by the detecting unit.

First claim

What is claimed is:

1. An image display apparatus comprising:
a laser light source unit;
a scan mirror unit configured to reflect laser beams output from the laser light source unit and scan the light beams;
a rendering control unit configured to control the laser light source unit in such a way that a display image is rendered in a range being smaller than a scan range of the scan mirror unit based on input display image data;
a detecting unit configured to detect a range to be a reference for setting a laser beam output position for adjusting an output of the laser beams based on the display image data; and
an output adjusting control unit configured to control the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output at a position outside the range where the display image is rendered in the scan range of the scan mirror unit, and the position being based on the range detected by the detecting unit.

2. The image display apparatus according to claim 1 , wherein
the detecting unit detects a range having high brightness of the display image based on the display image data, and
the output adjusting control unit controls the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output in vicinity of a range that is outside the range where the display image is rendered in the scan range of the scan mirror unit, and further, the range is having high brightness detected by the detecting unit.

3. The image display apparatus according to claim 2 , wherein the detecting unit detects a range as the range having the high brightness where more area is rendered by the laser beams in the display image based on the display image data.

4. The image display apparatus according to claim 2 , wherein the detecting unit partitions the display image into a plurality of areas and detects the range having the high brightness from among the plurality of areas based on brightness for each of the areas that are positioned at a side part of the display image.

5. The image display apparatus according to claim 2 , wherein the output adjusting control unit changes an output period of the laser beams for adjusting the output of the laser beams in accordance with the brightness of the range detected by the detecting unit.

6. The image display apparatus according to claim 1 , wherein
the detecting unit detects a range having a high degree of gaze in the display image based on the display image data, and
the output adjusting control unit controls the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output at a position that is outside the range where the display image is rendered in the scan range of the scan mirror unit, and further, the position is distant from a range having the high degree of gaze detected by the detecting unit.

7. The image display apparatus according to claim 6 , wherein the detecting unit detects the range with the high degree of gaze based on a component that constitutes the display image based on the display image data.

8. The image display apparatus according to claim 6 , wherein the detecting unit detects the range with the high degree of gaze based on an importance of the component that constitutes the display image based on the display image data.

9. The image display apparatus according to claim 6 , wherein the detecting unit detects the range with the high degree of gaze based on a visibility of the component that constitutes the display image based on the display image data.

10. The image display apparatus according to claim 1 , further comprising an enclosure including an opening that is opened in a projection direction of the laser beams scanned by reflection of the scan mirror unit, wherein the enclosure passes the laser beams in the range where the display image is rendered in the scan range of the scan mirror unit through the opening, and the enclosure shields a range other than the range where the display image is rendered.

11. An image display adjusting method comprising:
a detecting step for detecting a range to be a reference for setting a laser beam output position for adjusting an output of the laser beams based on input display image data;
a rendering control step for controlling a laser light source unit in such a way that a display image is rendered in a range smaller than a scan range of a scan mirror unit configured to scan by reflecting laser beams output from the laser light source unit, based on the display image data; and
an output adjusting control step for controlling the laser light source unit in such a way that the laser beams for adjusting the output of the laser beams are output at a position outside the range where the display image is rendered in the rendering control step, and the position being based on the range detected in the detecting step.

Assignees

• Jvc Kenwood Corp

Inventors

• Tabata Kiyofumi
• Nakano Tatsuya

Classifications

• B60K35/233

  controlling the size or position in display areas of virtual images depending on the condition of the vehicle or the driver · CPC title

• H04N9/3185

  Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14) · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• B60K2350/1072

  Operations & Transport · mapped topic

• H04N9/3135 Primary

  Driving therefor · CPC title