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    • 1. 发明授权
    • Performance-temperature optimization by cooperatively varying the
voltage and frequency of a circuit
    • 通过协调改变电路的电压和频率进行性能温度优化
    • US6047248A
    • 2000-04-04
    • US226097
    • 1998-10-19
    • Christos John GeorgiouEdward Scott KirkpatrickThor Arne Larsen
    • Christos John GeorgiouEdward Scott KirkpatrickThor Arne Larsen
    • G05D23/24G06F1/20G06F1/32G05D23/00
    • G06F1/324G05D23/1913G05D23/24G06F1/206G06F1/3203G06F1/3296Y02B60/1217Y02B60/1275Y02B60/1285
    • A system and method using thermal feedback to cooperatively vary a voltage and frequency of a circuit to control heating while maintaining synchronization. Preferably, on-chip thermal sensors are used for feedback. A system having features of the invention includes: a thermal sensor coupled to the circuit, the thermal sensor generating a temperature signal which is a function of a temperature associated with the functional unit; a temperature decoder having an input and an output, the input coupled to the thermal sensor for decoding the temperature signal; a comparator having one input coupled to the decoder for comparing a decoded temperature signal with a predetermined temperature threshold signal coupled to a second input, the comparator enabling a voltage/clock control signal as a function of the decoded temperature signal and the predetermined temperature threshold; an adjustable voltage regulator coupled to the voltage/clock control signal; and a clock selector coupled to the voltage/clock control signal; wherein the voltage regulator and the clock selector are adapted to cooperatively vary the voltage and the frequency of the circuit to a predetermined voltage-frequency pair, responsive to the voltage/clock control signal.
    • 使用热反馈的系统和方法协调地改变电路的电压和频率以控制加热同时保持同步。 优选地,片上热传感器用于反馈。 具有本发明特征的系统包括:耦合到电路的热传感器,热传感器产生温度信号,温度信号是与功能单元相关联的温度的函数; 具有输入和输出的温度解码器,所述输入耦合到所述热传感器,用于解码所述温度信号; 比较器,其具有耦合到解码器的一个输入端,用于将解码的温度信号与耦合到第二输入端的预定温度阈值信号进行比较,所述比较器使电压/时钟控制信号作为解码温度信号和预定温度阈值的函数; 耦合到电压/时钟控制信号的可调电压调节器; 以及时钟选择器,耦合到所述电压/时钟控制信号; 其中所述电压调节器和所述时钟选择器适于根据所述电压/时钟控制信号协调地将所述电路的电压和频率改变为预定的电压 - 频率对。
    • 2. 发明授权
    • System for monitoring power consumption of semiconductor devices
    • 监控半导体器件功耗的系统
    • US06021502A
    • 2000-02-01
    • US873768
    • 1997-06-12
    • Hideki Ando
    • Hideki Ando
    • G06F1/20G06F1/32G11C5/00G11C11/406G06F1/46
    • G06F9/30145G06F1/206G06F1/3203G11C11/406G11C11/4074G11C5/14G11C2211/4067Y02B60/1275
    • A technique for providing information about the relationship between circuits and the amounts of power consumed by the respective circuits to control a heat-sensitive circuit with higher accuracy is disclosed. A decoder (6a) causes an ALU power evaluation counter (7a) to count when a control code applied thereto is not an ALU control code. The ALU power evaluation counter (7a) counts the number of control codes which do not operate an ALU (5a). A multiplier (14) multiplies the output from the ALU power evaluation counter (7a) by a predetermined number to provide the result to an adder (10). The adder (10) adds the results from multipliers (14-16) together to store the result in a total power evaluation register (11). The smaller the value stored in the total power evaluation register (11), the greater the amount of heat generated. A DRAM refresh control circuit (12) shortens a refresh cycle so that a DRAM (13) is frequently refreshed.
    • 公开了一种用于提供关于电路之间的关系的信息和各个电路消耗的功率量以控制具有更高精度的热敏电路的技术。 解码器(6a)使得ALU功率评估计数器(7a)对其应用的控制代码不是ALU控制代码进行计数。 ALU功率评估计数器(7a)对不操作ALU(5a)的控制代码的数量进行计数。 乘法器(14)将来自ALU功率评估计数器(7a)的输出乘以预定数量,以将结果提供给加法器(10)。 加法器(10)将来自乘法器(14-16)的结果相加在一起,将结果存储在总功率评估寄存器(11)中。 总功率评估寄存器(11)中存储的值越小,产生的热量就越大。 DRAM刷新控制电路(12)缩短刷新周期,使得DRAM(13)经常刷新。