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Title:
DISPLAY DEVICE AND METHOD OF ADJUSTING OPTICAL GRADATION CHARACTERISTIC
Document Type and Number:
Japanese Patent JP2009171192
Kind Code:
A
Abstract:

To easily obtain freely set gamma characteristics by arbitrarily changing gamma characteristics in an arbitrary gradation range.

The adjustment of the gamma characteristics of image display is open to a user. In this case, the user uses a remote controller, or the like to display a gamma curve on a display device, sets an arbitrary minimum point (Min) 101 and an arbitrary maximum one (Max) 102 on the gamma curve, and sets an arbitrary adjustment point 103 on the gamma curve within the range. The output gradation value of the adjustment point 103 is moved vertically according to user's operation. At this time, three points, namely the minimum, adjustment, and maximum points 101, 103, 102, are subjected to curve interpolation to generate a new gamma curve. The conversion data of the generated gamma curve is used to convert and output the gradation of an input image signal for reflecting on a display screen.


Inventors:
TAKIGUCHI MASAHIKO
KOIKE AKIRA
Application Number:
JP2008006689A
Publication Date:
July 30, 2009
Filing Date:
January 16, 2008
Export Citation:
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Assignee:
SHARP KK
International Classes:
H04N5/202; G09G3/20; G09G3/36; G09G5/00; G09G5/36; H04N5/66
Domestic Patent References:
JP2000172825A2000-06-23
JP2006146134A2006-06-08
JP2003134528A2003-05-09
JP2001309207A2001-11-02
JP2004134853A2004-04-30
Attorney, Agent or Firm:
Hiroyuki Okada
Akinaka Takano
Kenichiro Sano
Eiichi Shiragashi



 
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