发明名称 |
AUTOMATIC LIGHTING CONTROL FOR COMMUNICATION DEVICES WITH A CAMERA |
摘要 |
An automatic lighting control system for communication devices with a camera <B>3</B> where the ambient light levels detected by the camera <B>3</B> are used to adjust the brightness of the user interfaces, e.g. display <B>4</B> and keypad <B>2</B>. The system contains a monitor circuit <B>22</B> which activates and obtains ambient light level values from the camera <B>3</B> at a frequency dependent on the rate of change of ambient light. |
申请公布号 |
GB2403096(A) |
申请公布日期 |
2004.12.22 |
申请号 |
GB20030013085 |
申请日期 |
2003.06.07 |
申请人 |
* MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
KEVIN * KRAUSE |
分类号 |
G09G3/34;H04M1/22;H04M1/725;H04M1/73 |
主分类号 |
G09G3/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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