Electrical transmission or interconnection systems – Plural supply circuits or sources
Reexamination Certificate
2009-09-16
2011-11-22
Fleming, Fritz M (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
C307S072000, C307S075000
Reexamination Certificate
active
08063509
ABSTRACT:
A power supply voltage adjusting apparatus includes a voltage setting part that, according to a characteristic variation of a semiconductor integrated circuit, sets a first power supply voltage of a first power supply domain module among a plurality of modules in the semiconductor integrated circuit, each module respectively having a different power supply voltage; a detecting part that compares phases of a first clock signal flowing through the first power supply domain module and a second clock signal flowing through a second power supply domain module to detect a phase difference; and a voltage adjusting part that adjusts a second power supply voltage supplied to the second power supply domain module to reduce the phase difference detected by the detecting part.
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Fleming Fritz M
Fujitsu Limited
Staas & Halsey , LLP
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