| 摘要 |
<p>PURPOSE:To give a priority to the power consumption of a function extending device and to improve its function extending property by providing the device with a current detecting circuit for detecting a current value exceeding a prescribed value and a switching circuit for inhibiting power supply to a personal computer(PC) body. CONSTITUTION:The current detecting circuit 11, the switching circuit 12, a function extending base 13, a display circuit 14, and a power supply circuit 15 are included in the function extending device 1. The circuit 11 detects the power consumption of the base 13, i.e. the current value of current flowing into the circuit of the base 13, and the circuit 12 is turned on/off in accordance with the detection result of the circuit 11. The circuit 15 supplies charging and operating power also to the PC body 2 in addition to the base 13 to be inserted into the device 1 itself. Thus, the function extending property can be improved by aborting power supply to the PC body 2 and allowing the device 1 to consume power with priority.</p> |
