公开(公告)号：US06829713B2

公开(公告)日：2004-12-07

申请号：US09751759

申请日：2000-12-30

申请人： Barnes Cooper ,  Jay Arjangrad

发明人： Barnes Cooper ,  Jay Arjangrad

IPC分类号： G06F132

CPC分类号： G06F1/3237 ,  G06F1/3203 ,  Y02D10/128

摘要： A demand-based method and system of central processing unit power management. The utilization of a central processing unit (CPU) during a sampling time interval is determined by measuring a time quantum within the sampling time interval during which a central processing unit clock signal is active within a processor core of the CPU. The total number of cycles of the central processing unit clock signal that are applied to the processor core and the period of the central processing unit clock signal are used to determine the time quantum. The utilization may then be expressed in terms of a ratio of the time quantum to the total time interval and used to select a processor performance mode. The CPU is then operated in the selected processor performance mode.

摘要翻译： 中央处理单元电源管理的基于需求的方法和系统。 在采样时间间隔期间利用中央处理单元（CPU）通过测量在CPU的处理器核心内的中央处理单元时钟信号有效的采样时间间隔内的时间量度来确定。 使用施加到处理器核心的中央处理单元时钟信号的周期数和中央处理单元时钟信号的周期来确定时间量。 然后利用率可以用时间量与总时间间隔的比率来表示，并用于选择处理器性能模式。 然后CPU以选定的处理器性能模式运行。

公开(公告)号：US20050108587A1

公开(公告)日：2005-05-19

申请号：US11006872

申请日：2004-12-07

申请人： Barnes Cooper ,  Jay Arjangrad

发明人： Barnes Cooper ,  Jay Arjangrad

IPC分类号： G06F1/32

CPC分类号： G06F1/3237 ,  G06F1/3203 ,  Y02D10/128

摘要： A demand-based method and system of central processing unit power management. The utilization of a central processing unit (CPU) during a sampling time interval is determined by measuring a time quantum within the sampling time interval during which a central processing unit clock signal is active within a processor core of the CPU. The total number of cycles of the central processing unit clock signal that are applied to the processor core and the period of the central processing unit clock signal are used to determine the time quantum. The utilization may then be expressed in terms of a ratio of the time quantum to the total time interval and used to select a processor performance mode. The CPU is then operated in the selected processor performance mode.

摘要翻译： 中央处理单元电源管理的基于需求的方法和系统。 在采样时间间隔期间利用中央处理单元（CPU）通过测量在CPU的处理器核心内的中央处理单元时钟信号有效的采样时间间隔内的时间量度来确定。 使用施加到处理器核心的中央处理单元时钟信号的周期数和中央处理单元时钟信号的周期来确定时间量。 然后利用率可以用时间量与总时间间隔的比率来表示，并用于选择处理器性能模式。 然后CPU以选定的处理器性能模式运行。