The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2011
Filed:
Sep. 16, 2009
Hiroshi Okano, Kawasaki, JP;
Hiroshi Okano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.