System and method for preserving internal processor context...

Details System and method for preserving internal processor context... System and method for preserving internal processor context...

2005-11-22

2005-11-22

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C712S228000, C365S228000, C365S229000

Reexamination Certificate

active

06968469

ABSTRACT:
A CPU (1) automatically preserves the CPU context in a computer memory (5) that remains powered-up when the CPU is powered down in sleep mode. By means of the preserved CPU context, the CPU is able to instantly and transparently resume program execution at the instruction of the program that was asserted for execution when the CPU was powered down. The CPU is permitted to power down frequently, even during execution of a program, and results in reduced average overall power consumption.

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Tanenbaum, Andrew; 1984, “Structured Computer Organization”, Prentice-Hall inc., 2nd Ed., p. 11.

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