System with clock frequency controller responsive to interrupt i

Details System with clock frequency controller responsive to interrupt i System with clock frequency controller responsive to interrupt i

1994-04-29

1996-09-24

Lee, Thomas C.

Boots, shoes, and leggings

395750, 395550, 364DIG1, 3642311, 3642702, 3642731, 364DIG2, 3649488, G06F 1516, G06F 108, G06F 126

Patent

active

055600174

ABSTRACT:
In a portable computer the BIOS software slows the system clock frequency during idle periods. The BIOS software returns the system to its normal operating frequency when an awaited event such as a keystroke occurs. In the event of an interrupt while the system clock is at the lower frequency, a hardware clock control circuit responds to the interrupt to promptly increase the system clock frequency to the normal value. By decoding the old frequency, new frequency and the several available frequencies, the change in frequency is timed to maintain proper phase and duty cycle without interruption.

REFERENCES:
patent: 4381552 (1983-04-01), Nicilini et al.
patent: 4698748 (1987-10-01), Juzswik et al.
patent: 4851987 (1989-07-01), Day
patent: 4965524 (1990-10-01), Patchen
patent: 5083266 (1992-01-01), Watanabe
patent: 5142684 (1992-08-01), Perry et al.
patent: 5163146 (1992-11-01), Antanaitis, Jr. et al.
patent: 5218704 (1993-06-01), Watts, Jr. et al.
patent: 5222239 (1993-06-01), Rosch
patent: 5261082 (1993-11-01), Ito et al.
IBM Technical Disclosure Bulletin, vol. 29, No. 9, Feb. 1987, pp. 4122-4124, System Power Savings By Automatic Sleep Mode.

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