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:
Apr. 02, 2013
Filed:
Mar. 04, 2010
Seok-woo Choi, Seoul, KR;
Seok-Woo Choi, Seoul, KR;
Samsung Electronics Co., Ltd., Samsung-ro, Yeontong-gu, Suwon-si, Gyeonggi-do, KR;
Abstract
A delay locked loop circuit is disclosed. The circuit includes a phase detector for comparing the phase of an input clock signal with the phase of a feedback clock signal that is fed back into the phase detector, and for outputting a detection signal. The circuit also includes a control circuit unit for controlling a delay line in response to the detection signal, a delay line for delaying the input clock by a predetermined amount of delay in response to output impedance calibration codes applied to the delay line, and a replica circuit configured to have the same delay conditions as those of an actual clock path to a circuit of the semiconductor device, to receive a delay clock signal of the delay line, and to generate the feedback clock signal.