| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide radio terminal equipment detecting presence or absence of a contact or weighting for suppressing power consumption as much as possible with less delay as much as possible. <P>SOLUTION: Two sensors whose on/off states of detection are opposite and whose detection operations are synchronized are combined. When the first sensor detects a detection object, a first output voltage level changes. When a processor detects a change of the output voltage level as an interruption signal, a driving voltage level of the first sensor is switched to low, and the driving voltage level of the second sensor is switched to high. When the second sensor detects the detection object, an output voltage level of the second sensor changes. When the processor detects the change of the output voltage level as the interruption signal, the driving voltage level of the second sensor is switched to low and the driving voltage level of the first circuit is switched to high. Thus, power consumption is made low and the detection object can be detected instantaneously. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
