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1. (WO2016002075) IMAGE DISPLAY DEVICE AND METHOD FOR DIMMING LIGHT SOURCE

Pub. No.:    WO/2016/002075    International Application No.:    PCT/JP2014/067938
Publication Date: Fri Jan 08 00:59:59 CET 2016 International Filing Date: Sat Jul 05 01:59:59 CEST 2014
IPC: G09G 3/36
G09G 3/20
G09G 3/34
Applicants: NEC DISPLAY SOLUTIONS, LTD.
NECディスプレイソリューションズ株式会社
Inventors: MORIMOTO, Takeshi
森本 健
Title: IMAGE DISPLAY DEVICE AND METHOD FOR DIMMING LIGHT SOURCE
Abstract:
The purpose of the present invention is to provide an image display device and a method for dimming a light source capable of displaying an image with natural brightness through dimming control. The image display device comprises: a light source; a display unit for forming an image by spatially modulating light from the light source on the basis of an input video signal (S1); a histogram acquisition unit (102) for acquiring, on the basis of the input video signal, a first histogram that represents image data using the frequency of each brightness level and a second histogram having a number of brightness levels different from the number of brightness levels represented in the first histogram; and control units (103, 104) for performing dimming control which adjusts the luminance of the light source on the basis of the first and second histograms.