Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/013983
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a display device which, when transforming three primary colors of input to four primary colors of output and displaying the same, is capable of performing accurate color reproduction using a simple method. A display device is provided with a color transformation unit (12) which transforms 3 RGB primary colors of an input video image signal into a tri-stimulus value of an XYZ color system, and transforms the transformed tri-stimulus value to 4 primary colors of an output video image signal. The color transformation unit (12) fixes at least one color component among any of the 4 primary colors of the output video image signal, obtains a tri-stimulus value difference which is a difference between the tri-stimulus value of the 3 RGB primary colors of the input video image signal and the tri-stimulus value of the fixed color component, and transforms the obtained tri-stimulus value difference by way of a predefined inverse matrix to the three color components other than the fixed color component.
Inventors:
KANDA TAKASHI
Application Number:
PCT/JP2013/069290
Publication Date:
January 23, 2014
Filing Date:
July 16, 2013
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04N1/60; G06T1/00; G09G3/20; G09G3/36; G09G5/00; G09G5/02; H04N1/46
Domestic Patent References:
| WO2012073864A1 | 2012-06-07 | |||
| WO2009001579A1 | 2008-12-31 |
Foreign References:
| JP2012108489A | 2012-06-07 | |||
| JP2009192802A | 2009-08-27 | |||
| JP2005227408A | 2005-08-25 |
Attorney, Agent or Firm:
OKADA, HIROYUKI (JP)
Hiroyuki Okada (JP)
Hiroyuki Okada (JP)
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