Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2008-04-08
2008-04-08
Elamin, A. (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
C713S320000, C713S323000
Reexamination Certificate
active
10631537
ABSTRACT:
A component of a microprocessor-based data processing system, which includes features for regulating power consumption in snoopable components and has gating off memory coherency properties, is determined to be in a relatively inactive state and is transitioned to a non-snoopable low power mode. Then, when a snoop request occurs, a retry protocol is sent in response to the snoop request. In conjunction with the retry protocol, a signal is sent to bring the component into snoopable mode. When the retry snoop is requested, the component is in full power mode and can properly respond to the snoop request. After the snoop request has been satisfied, the component again enters into a low power mode. Therefore, the component is able to enter into a low power mode in between snoops.
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Asano Shigehiro
Brown Jeffrey Douglas
Day Michael Norman
Johns Charles Ray
Kahle James Allan
Brown Michael J
Carr LLP
Elamin A.
Rifai D'Ann N.
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