- 专利标题: Real-time white point correction for tablet display
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申请号: US14574285申请日: 2014-12-17
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公开(公告)号: US09947275B1公开(公告)日: 2018-04-17
- 发明人: Rajeev Ramanath , Ajay Gowribdanur Ramesh
- 申请人: Amazon Technologies, Inc.
- 申请人地址: US WA Seattle
- 专利权人: AMAZON TECHNOLOGIES, INC.
- 当前专利权人: AMAZON TECHNOLOGIES, INC.
- 当前专利权人地址: US WA Seattle
- 代理机构: Davis Wright Tremaine LLP
- 主分类号: G09G5/10
- IPC分类号: G09G5/10 ; G09G3/34
摘要:
A method and apparatus are explained for performing white point color adjustment for a display device. This can be done by obtaining a value of an ambient light sensor, determining whether to make a white point adjustment, and, for a dynamic white point adjustment, using the value from the ambient light sensor in performing white point adjustment toward target color coordinates. A white point might be set equal to the target color coordinates, but might also remain unchanged for small ambient light changes or ambient light outside a region of interest. The white point might be changed to the target color coordinates in multiple steps. Various parameters might be used that can be varied to vary behavior of the white point adjustment.
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