MULTI-LEVEL DISPLAY METHOD AND DEVICE,申请号JP20060326874-传众专利搜索

MULTI-LEVEL DISPLAY METHOD AND DEVICE

申请公布号：JP2008139646(A)

申请号：JP20060326874

申请日期：2006.12.04

申请公布日期：2008.06.19

申请人：

HITACHI PLASMA DISPLAY LTD

发明人：CHIAKI YUTAKA;ITOKAWA NAOKI;TAKADA YOSHIAKI

分类号：G09G3/288;G09G3/20;G09G3/28;G09G3/291;G09G3/292;G09G3/293;G09G3/294;G09G3/298;H04N5/66

主分类号：G09G3/288

摘要：PROBLEM TO BE SOLVED: To provide technique capable of compatibly improving performances of both the lightness of display (screen) and electric power of a multi-level display device by suitably controlling them according to video contents while preventing deterioration in picture quality of video. SOLUTION: In a multi-level processing unit 6 of the display device (PDP device), an image number detector 22 detects and decides the number of low-grayscale pixels of an image of an input video signal (VIN) (K1, K2) under subfield (SF) driving control, and a switching decision unit 24 decides and outputs a selection signal (SEL) for switching one of outputs of a plurality of kinds of SF conversion of an SF conversion unit 23 by a switching decision unit 24 according to the detection and decision result. Under this control, SF conversion is selected which has more pause SFs as the number of low-grayscale pixels is larger. COPYRIGHT: (C)2008,JPO&INPIT