| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce power consumption concerning a sensing device, a display device, an electronic apparatus, and a sensing method. <P>SOLUTION: On a screen, m×n light detecting circuits O1 (optical sensors) are formed corresponding to the intersection of m (an integer being≥2) scanning lines with n (an integer being≥2) reading lines. A scanning circuit 500 for a sensor to read a light receiving signal from each light detecting circuit O1 and a light receiving signal processing circuit 600 are arranged. When a non-contact state is continuously detected for a prescribed time period concerning a finger or a touch pen on a display screen, an operation mode is shifted from a normal mode to a low power consumption mode, and then, the light receiving signals (m×n) for one screen are read by 10 Hz. When the approach of the finger or touch pen to a part close to the display screen is detected, the operation mode is shifted from the low consumption mode to the normal mode, and then, the light receiving signals (m×n) for one screen are read by 60 Hz. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
