| 摘要 |
<p>PURPOSE:To reduce the power consumption in a back-up operation state of an uninterruptive power unit, to increase the back-up operation time, and also to reduce the system scale. CONSTITUTION:When an uninterruptive power monitor 313 is informed of a power failure from an uninterruptive power unit, the power supply to the prescribed system component elements is cut by a DC power control unit 315 and an AC power control unit 316. Then, the CPU clock frequency is reduced by a clock controller 3 and the power consumption in a power failure period is reduced.</p> |
