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    • 10. 发明授权
    • Multiprocessor system with reduced power mode and improved variation of
power demand
    • 具有降低功耗模式和改善功率需求变化的多处理器系统
    • US5724591A
    • 1998-03-03
    • US592236
    • 1996-01-26
    • Tsutomu HaraTakashi MaruyamaHitoshi YoshidomeRyuichi HattoriTsunehiro Tobita
    • Tsutomu HaraTakashi MaruyamaHitoshi YoshidomeRyuichi HattoriTsunehiro Tobita
    • G06F1/04G06F1/32G06F1/26
    • G06F1/3215G06F1/3237Y02B60/1221
    • A multiprocessor system is provided with processor units which are grouped beforehand into some groups, a system status monitoring unit for monitoring a key input operation of a keyboard, a power demand monitoring unit for calculating the difference between the total power demand of the processor units at the present time and the total power demand of the processor units in a low power-demand mode which is measured beforehand, when the key input operation is not carried out in a normal operation mode for a predetermined time, and an operation clock controller for successively reducing or stopping operation clocks supplied to the respective processor units for each group in turn to shift the current mode to the low power-demand mode. With this construction, a power variation which occurs at the time of the switching operation between the normal operation mode and the low power-demand mode or at the time of power supply/power shut-off can be reduced.
    • 多处理器系统设置有预先分组成一些组的处理器单元,用于监视键盘的键输入操作的系统状态监视单元,用于计算处理器单元的总功率需求之间的差异的功率需求监控单元 当在预定时间内在正常操作模式下执行键输入操作时,预先测量的低功率需求模式下的处理器单元的当前时间和总功率需求;以及连续地执行的操作时钟控制器 依次向每个组提供给相应的处理器单元的操作时钟或者停止操作时钟将当前模式转换到低功率需求模式。 利用这种结构,可以减少在正常操作模式和低功率需求模式之间或在电源/电源切断时的开关操作时发生的电力变化。