Title:
LASER PROJECTION DISPLAY DEVICE, AND METHOD FOR CONTROLLING LASER LIGHT SOURCE DRIVING UNIT USED FOR SAME
Document Type and Number:
WIPO Patent Application WO/2016/121414
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce a change in the white balance when performing dimming operation for transitioning the luminance during a normal operation to a different luminance in a laser projection display device for displaying an image by projecting laser light generated by a laser light source in accordance with an image signal. In order to solve the problem above, the laser projection display device includes: a photo-sensor for detecting the quantity of laser light generated by the laser light source; and an image processing unit for processing a drive signal on the basis of the quantity of light of the detected laser light and supplying the processed drive signal to a driving unit for the laser light source. Right after the dimming, the image processing unit supplies the drive signal to the driving unit for the laser light source on the basis of the quantity of light of the detected laser light within a second execution cycle shorter than a first execution cycle which is the execution cycle used during the normal operation.
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Inventors:
OGI YUYA (JP)
SEO YOSHIHO (JP)
NONAKA TOMOYUKI (JP)
SEO YOSHIHO (JP)
NONAKA TOMOYUKI (JP)
Application Number:
PCT/JP2016/050117
Publication Date:
August 04, 2016
Filing Date:
January 05, 2016
Export Citation:
Assignee:
HITACHI LG DATA STORAGE INC (JP)
International Classes:
G09G3/02; G02B26/10; G09G3/34; H04N5/74
Foreign References:
| JP2012108397A | 2012-06-07 | |||
| JP2014063063A | 2014-04-10 | |||
| JP2014132295A | 2014-07-17 | |||
| JP2007050757A | 2007-03-01 | |||
| JP2010237238A | 2010-10-21 | |||
| JP2014174292A | 2014-09-22 |
Other References:
See also references of EP 3252745A4
Attorney, Agent or Firm:
SEIRYO I. P. C. (JP)
青稜 patent business corporation (JP)
青稜 patent business corporation (JP)
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