Information processing apparatus with CPU-load-based clock frequ

Details Information processing apparatus with CPU-load-based clock frequ Information processing apparatus with CPU-load-based clock frequ

1998-03-26

2000-06-13

Heckler, Thomas M.

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Multiple or variable intervals or frequencies

713322, G06F 108

Patent

active

060761717

ABSTRACT:
An information processing apparatus includes a CPU, a memory, and a reference signal generator and operates based on a system clock signal generated by the reference signal generator. The apparatus includes a detection unit for detecting a CPU operational state and a clock control unit for controlling frequency of the system clock signal. The detection unit detects a CPU busy ratio as a CPU operational state indicating the load on the CPU. The clock control unit controls the frequency of the system clock so that the detected CPU busy ratio falls within a permissible range of CPA load.

REFERENCES:
patent: 5086387 (1992-02-01), Arroyo et al.
patent: 5560017 (1996-09-01), Barrett et al.
patent: 5761517 (1998-06-01), Durham et al.
patent: 5909585 (1999-06-01), Shinmiya

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