Reducing power consumption in embedded systems by...

Electrical computers and digital processing systems: support – Computer power control – Power conservation

Reexamination Certificate

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C713S401000

Reexamination Certificate

active

11243946

ABSTRACT:
An embedded system optimally operates with minimal power consumption without sacrificing performance. Power consumption can be reduced by independently and dynamically controlling multiple power partitions, wherein components within a partition can have the same power profile. States of operation can be programmably defined in a table and enforced using hardware. Voltages in the table can be dynamically updated during a runtime of the system using a timing feedback module, which is connected to a critical path in a partition. The timing feedback module can output a vector that indicates the timing margin for that critical path. Using this timing margin, software can increase or decrease the voltage to optimize power consumption of that partition.

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patent: 2004/0090808 (2004-05-01), Meguro

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