- 专利标题: Backlight control for display devices
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申请号: US18473675申请日: 2023-09-25
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公开(公告)号: US12100361B1公开(公告)日: 2024-09-24
- 发明人: Hirobumi Furihata , Kazutoshi Aogaki , Takashi Nose , Masao Orio
- 申请人: Synaptics Incorporated
- 申请人地址: US CA San Jose
- 专利权人: Synaptics Incorporated
- 当前专利权人: Synaptics Incorporated
- 当前专利权人地址: US CA San Jose
- 代理机构: Leydig, Voit & Mayer, Ltd.
- 主分类号: G09G3/34
- IPC分类号: G09G3/34
摘要:
A display device includes a display panel, a backlight device, a drive circuit, and a backlight control circuit. The backlight device includes a plurality of light sources configured to illuminate the display panel. The drive circuit is configured to update the display panel based on an input image. The backlight control circuit is configured to apply a filter to a target part of the input image to generate a filtered image part. The target part of the input image is displayed in a corresponding region of the display panel illuminated by a target light source of the plurality of light sources. The backlight control circuit is further configured to control a luminance level of the target light source based on a maximum pixel luminance level of the filtered image part and a local average picture level (APL) of the filtered image part.
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