| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a monitoring device saving power at a higher level. <P>SOLUTION: An updating means 112 extends a fluctuation range, when a determination means 106 determines that a measured value indicating a distance to a user falls within the fluctuation range when a prescribed time elapses after the value is beyond the fluctuation range. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
