Invention Grant
US08237688B2 Contrast control apparatus and contrast control method and image display
有权
对比度控制装置和对比度控制方法及图像显示
- Patent Title: Contrast control apparatus and contrast control method and image display
- Patent Title (中): 对比度控制装置和对比度控制方法及图像显示
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Application No.: US11769722Application Date: 2007-06-28
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Publication No.: US08237688B2Publication Date: 2012-08-07
- Inventor: Kuo-Wei Huang , Chung-Wen Hung
- Applicant: Kuo-Wei Huang , Chung-Wen Hung
- Applicant Address: TW Hsinchu
- Assignee: Novatek Microelectronics Corp.
- Current Assignee: Novatek Microelectronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Jianq Chyun IP Office
- Priority: TW96111241A 20070330
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G5/00 ; G09G5/10 ; G06F3/038 ; G06K9/00 ; H04N5/14

Abstract:
A contrast control apparatus includes a statistic distribution unit and a characteristic judging unit. The statistic distribution unit receives an image data to have a brightness histogram distribution in statistic. The brightness histogram distribution has a plurality of statistic nodes, respectively corresponding to a plurality of gray levels in statistic. The characteristic judging unit at least receives the brightness histogram distribution to determine a brightness adjusting signal for the image data, so as to proportionally adjust a brightness of a display light source. In addition, the characteristic judging unit also outputs a contrast curve, and the contrast curve represents a plurality of adjusted nodes, respectively corresponding to the statistic nodes. As a result, the brightness of the statistic nodes is changed.
Public/Granted literature
- US20080238935A1 CONTRAST CONTROL APPARATUS AND CONTRAST CONTROL METHOD AND IMAGE DISPLAY Public/Granted day:2008-10-02
Information query
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