发明名称 |
INPUT/OUTPUT DEVICE AND DRIVING METHOD THEREOF |
摘要 |
An object is to reduce power consumption. An input/output device including: a display selection signal output circuit outputting a display selection signal during a first display mode and stopping outputting the display selection signal during a second display mode; a photodetection reset signal output circuit outputting N (N is a natural number) photodetection reset signals during a first photodetection mode and outputting M (M is a natural number smaller than N) photodetection reset signals during a second photodetection mode; an output selection signal output circuit outputting N output selection signals during the first photodetection mode and outputting M output selection signals during the second photodetection mode; and a photodetector circuit being reset in accordance with a photodetection reset signal, generating data according to an intensity of light entering the photodetector circuit subsequently, and outputting the data as a data signal in accordance with the output selection signal.
|
申请公布号 |
US2012001874(A1) |
申请公布日期 |
2012.01.05 |
申请号 |
US201113166041 |
申请日期 |
2011.06.22 |
申请人 |
KUROKAWA YOSHIYUKI;IKEDA TAKAYUKI;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KUROKAWA YOSHIYUKI;IKEDA TAKAYUKI |
分类号 |
G06F3/042 |
主分类号 |
G06F3/042 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|