Title:
Graphic display control device
Document Type and Number:
Japanese Patent JP6226186
Kind Code:
B2
Abstract:
A video display control device includes a video signal processing section that corrects a video signal based on control data generated by a control data generating section and outputs a video signal after correction to a display, and a backlight controlling section that controls a light emission amount of a backlight based on a difference between a mean luminance of the video signal and a mean luminance of the video signal after correction. The control data generating section allocates to a low gradation region of the video signal a high gradation region dynamic range of the video signal in which a video signal corresponding to a black band region is excluded. The backlight controlling section controls a light emission luminance of the backlight so as to cancel out an increase or a decrease in the mean luminance of the video displayed on a screen, according to an increase or a decrease in the mean luminance of the video signal after correction with respect to the mean luminance of the video signal.
Inventors:
Takuma Shimura
Terumen Suenaga
Takashi Akita
Terumen Suenaga
Takashi Akita
Application Number:
JP2013556237A
Publication Date:
November 08, 2017
Filing Date:
January 17, 2013
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
G09G3/36; G09G3/20; G09G3/34; H04N5/66
Domestic Patent References:
| JP2001268391A | ||||
| JP2010045607A | ||||
| JP2009205128A |
Foreign References:
| WO2006103835A1 | ||||
| WO2012026110A1 | ||||
| US20130120660 |
Attorney, Agent or Firm:
Patent business corporation glory patent office
Kimihide Hashimoto
Yoshiaki Masaaki
Kimihide Hashimoto
Yoshiaki Masaaki
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