Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2007-09-25
2007-09-25
Cao, Chun (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
C713S320000, C713S340000
Reexamination Certificate
active
10906017
ABSTRACT:
An integrated circuit (IC) chip (100) containing a plurality of voltage islands (124I-M) containing corresponding functional blocks (104I-M) that can be selectively fenced, i.e., powered down, while saving the states of the corresponding inputs, and unfenced in order to manage power consumption of the chip. Each fencable functional block includes a power switch (140I-M) and state-saving circuitry (148I-M) for saving the state of the inputs to that functional block. A power modulation unit (PMU) (132) generates fencing signals (144I-M) that control the power switches and state-saving circuitries so as to selectively fence the corresponding functional blocks. The PMU generates the fencing signals as a function of one or more operating arguments.
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Hottelet Henry R.
Ventrone Sebastian T.
Cao Chun
Connolly Mark
Downs Rachlin & Martin PLLC
International Business Machines - Corporation
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