基本信息:
- 专利标题： 显示装置的背光调光期间剪切像素的灰度级的方法和装置
- 申请号：CN201510750956.8 申请日：2015-11-06
- 公开(公告)号：CN105590599B 公开(公告)日：2018-09-07
- 发明人： 权耕准 , 许天
- 申请人： 乐金显示有限公司
- 申请人地址： 韩国首尔
- 专利权人： 乐金显示有限公司
- 当前专利权人： 乐金显示有限公司
- 当前专利权人地址： 韩国首尔
- 代理机构： 北京三友知识产权代理有限公司
- 代理人： 吕俊刚; 刘久亮
- 优先权： 10-2014-0154650 2014.11.07 KR
- 主分类号： G09G3/36
- IPC分类号： G09G3/36 ; G09G3/34
The present disclosure provides method and device for dimming the backlight of an LCD. A number of pixels at each grayscale level of an input image is determined. The determined number of pixels at each grayscale level is accumulated to generate an accumulated distribution of the number of pixel and the accumulated distribution is filtered. A threshold grayscale level at which the filtered accumulated distribution exceeds a threshold value is determined. A scaling factor is determined based on the threshold grayscale level. The grayscale level of pixels of the input image having a grayscale level lower than or equal to the threshold grayscale level are up-scaled based on the scaling factor, the grayscale value of pixels of the input image having a grayscale level greater than the threshold grayscale level are set to have a predetermined clipping grayscale level, and the LCD backlight is dimmed based on the scaling factor.
公开/授权文献:
- CN105590599A 显示装置的背光调光期间剪切像素的灰度级的方法和装置 公开/授权日：2016-05-18
IPC结构图谱:
| G | 物理 |
| --G09 | 教育；密码术；显示；广告；印鉴 |
| ----G09G | 使用静态方法显示可变信息的指示装置 |
| ------G09G3/00 | 仅考虑与除阴极射线管以外的目视指示器连接的控制装置和电路 |
| --------G09G3/04 | .用于从许多字符中选取单个字符或用个别的元件组合构成字符来显示单个字符，例如分段 |
| ----------G09G3/22 | ..采用受控制光源 |
| ------------G09G3/36 | ...采用液晶 |