- 专利标题: IMAGE DISPLAYING METHOD, IMAGE DISPLAYING DEVICE, AND CONTRAST-ADJUSTING CIRCUIT FOR USE THEREWITH
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申请号: US12187922申请日: 2008-08-07
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公开(公告)号: US20090059083A1公开(公告)日: 2009-03-05
- 发明人: Hiroshi Aoki , Ryo Hasegawa
- 申请人: Hiroshi Aoki , Ryo Hasegawa
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2002-241579 20020822
- 主分类号: H04N5/202
- IPC分类号: H04N5/202 ; H04N5/66
摘要:
A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.