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. 13, 2012
Filed:
Jun. 28, 2010
Applicants:
Woogeun Rhee, Beijing, CN;
Xueyi Yu, Beijing, CN;
Sung Cheol Shin, Seoul, KR;
Zhihua Wang, Beijing, CN;
Inventors:
Woogeun Rhee, Beijing, CN;
Xueyi Yu, Beijing, CN;
Sung Cheol Shin, Seoul, KR;
Zhihua Wang, Beijing, CN;
Assignees:
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Tsinghua University, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Example embodiments are directed to a delay locked loop (DLL) circuit based on a hybrid finite impulse response (FIR) filtering technique, and a semiconductor memory device including the DLL circuit. The DLL circuit includes a frequency divider and a self-referenced multiphase generator (SRMG) and allows a Sigma-Delta (ΣΔ) modulator to operate at a low frequency without generating false lock and glitch noise.