| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably supply power to a radio-type pointing device by detecting the remaining capacity of a secondary battery incorporated in the pointing device and charging the secondary battery with charging devices when the pointing device is held by the holding device of a reception device. SOLUTION: The pointing device 1 operates with power supply from the incorporated secondary battery 2 in a separated state from the holding device 6, and data is communicated between the pointing device 1 and the reception device 3, The pointing device 1 is stored in the holding device 6 when it is not operated. A detection means 9 detects that the pointing device 1 is stored in the holding device 6 and the charging device 5 charges the secondary battery 2 through the charging device 4 and contact points 7 and 8. When detected remaining capacity sufficiently remains, it is not charged. Wen it is charged, the charging device 5 monitors the capacity of the secondary battery 2 and completes charging when capacity becomes a full charged state.</p> |
