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:
Aug. 17, 2010
Filed:
Mar. 11, 2009
Dong-uk Park, Yongin-si, KR;
Dong-uk Park, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A duty cycle correction circuit apparatus includes a flip-flop, a feedback unit connected between an input node and an output node of the flip-flop to invert an output signal of the flip-flop and to output the inverted signal as an output signal of the feedback unit, and a selection unit to select and output one of a first clock signal and a second clock signal to the flip-flop in response to the output signal of the feedback unit, wherein the first clock signal has a half-period phase difference with respect to the second clock signal. Using clock signals with a half-period phase difference therebetween and a simple digital circuit, the duty cycle correction circuit can correct a duty ratio to 50:50 regardless of an initial condition.