Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2008-05-20
2011-11-01
Du, Thuan (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S340000, C327S538000, C323S318000
Reexamination Certificate
active
08051312
ABSTRACT:
An integrated circuit includes an energy controller that generates a power supply voltage level for the integrated circuit based on a desired target frequency value for the integrated circuit. The energy controller configures a programmable hardware process sensor based on the power supply voltage level such that the programmable hardware process sensor is capable of mimicking the electrical characteristics of a predetermined critical path associated with the integrated circuit when operating at the power supply voltage level. By monitoring the frequency of the programmable hardware process sensor over a period of time, the energy controller can compare the monitored frequency to an expected value and determine whether the power supply voltage level can be adjusted or whether it should be maintained.
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Nakai, Masakatsu et al.; Dynamic Voltage and Frequency Management for a Low-Power Embedded Microprocessor; IEEE Journal of Solid-State Circuits; vol. 40, No. 1; Jan. 2005.
Advanced Micro Devices , Inc.
Du Thuan
Vedder Price P.C.
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