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1. 发明申请

US20120198257A1 MULTIPROCESSOR 有权
标题翻译：多用户
公开(公告)号：US20120198257A1
公开(公告)日：2012-08-02
申请号：US13362734
申请日：2012-01-31
申请人： Hitoshi YAMAMOTO , Akio IDEHARA , Yasuhiro TAWARA
发明人： Hitoshi YAMAMOTO , Akio IDEHARA , Yasuhiro TAWARA
IPC分类号： G06F1/32 , G06F1/26
CPC分类号： G06F1/324 , G06F1/3296 , Y02D10/126 , Y02D10/172
摘要： Timers #0 through #3 are each supplied with a period for prohibiting a change in a power supply voltage. An OS #A or an OS #B determines necessity to change an operating frequency for a CPU core corresponding to any of the timers #0 through #3 when the timer exceeds the prohibition period. It is determined whether it is necessary to change a power supply voltage supplied to CPU cores #0 through #3 when the OS #A or the OS #B determines necessity to change an operating frequency. When it is determined that a power supply voltage needs to be changed, a power supply voltage change portion 20 changes the power supply voltage supplied to the CPU cores #0 through #3. Therefore, it is possible to improve the processing efficiency without needing to acquire inter-OS lock.
摘要翻译：定时器＃0至＃3各自被提供有用于禁止电源电压改变的周期。当定时器超过禁止期间时，OS #A或OS #B确定需要改变与任何定时器＃0至＃3相对应的CPU核心的工作频率。当OS #A或OS #B确定需要改变操作频率时，确定是否需要改变提供给CPU核心＃0至＃3的电源电压。当确定需要改变电源电压时，电源电压变化部分20改变提供给CPU核心＃0至＃3的电源电压。因此，可以在不需要获取OS间锁定的情况下提高处理效率。

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