| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve convenience of a wireless pointing device by warning battery shutoff of a wireless pointing device and preventing troubles caused by battery shutoff. <P>SOLUTION: A battery power detecting circuit 15 is set on a wireless pointing device 1. A battery shutoff warning signal 101 is sent to an electronics device 2 when battery voltage value goes under a set point. When the electronics device 2 receives a battery shutoff warning signal 101, it lights a battery shutoff warning indicator 21 to notice users that battery is nearly running out. <P>COPYRIGHT: (C)2003,JPO</p> |
