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:
May. 03, 2016
Filed:
Jan. 07, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Win Chaivipas, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A timing adjustment circuit includes a detection unit to generate a detection signal in response to a first clock having a duty cycle of 50% and a first frequency, a second clock having a duty cycle of 50% and a second frequency that is half the first frequency, and a third clock having a duty cycle of 50%, the second frequency, and a phase displacement of 90 degrees relative to the second clock, the detection signal indicating timing relationship between the first clock and the second and third clocks, a low-pass filter to receive the detection signal, and a variable-delay circuit to adjust relative timing relationship between the first clock and the second clock in response to an output of the low-pass filter such that a center point of a pulse of the first clock is aligned with a center point of a pulse of the second clock.