Invention Grant
- Patent Title: Image display device and image display method
- Patent Title (中): 图像显示装置和图像显示方法
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Application No.: US12997645Application Date: 2009-06-04
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Publication No.: US08390656B2Publication Date: 2013-03-05
- Inventor: Takao Muroi , Kohji Fujiwara , Takayuki Murai
- Applicant: Takao Muroi , Kohji Fujiwara , Takayuki Murai
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2008-174392 20080703
- International Application: PCT/JP2009/060230 WO 20090604
- International Announcement: WO2010/001681 WO 20100107
- Main IPC: G09G5/10
- IPC: G09G5/10 ; G09G3/36

Abstract:
There is provided an image display device capable of suppressing the occurrence of a color shift while ensuring a sufficient color reproduction range. An in-area maximum luminance obtaining unit (151) divides an input image (31) into a plurality of areas and obtains, for each of RGB colors, a maximum luminance value (34) in each area. A weighting coefficient calculating unit (152) obtains the maximum luminance values (34) for the respective RGB colors for all of the areas, and determines weighting coefficients (35) which are required upon an LED luminance adjustment process, based on an mean value of the maximum luminances values (34) for each color. An LED luminance adjusting unit (153) adjusts the luminances of respective RGB color LEDs in each area to suppress the occurrence of a color shift, based on the maximum luminance values (34) obtained by the in-area maximum luminance obtaining unit (151) and the weighting coefficients (35) determined by the weighting coefficient calculating unit (152).
Public/Granted literature
- US20110090265A1 IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD Public/Granted day:2011-04-21
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