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:
Jun. 23, 2015
Filed:
Feb. 26, 2013
Applicant:
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Inventors:
Tae-sik Na, Seoul, KR;
Seok-hun Hyun, Seongnam-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01); H03L 7/18 (2006.01); G11C 8/18 (2006.01); G11C 7/22 (2006.01); H03L 7/081 (2006.01);
U.S. Cl.
CPC ...
H03L 7/18 (2013.01); G11C 8/18 (2013.01); G11C 7/222 (2013.01); H03L 7/0812 (2013.01);
Abstract
A delay locked loop (DLL) circuit having improved noise characteristics. The DLL circuit includes a first divider for generating a first divided signal by dividing an external clock; a second divider for generating a second divided signal by dividing an internal clock; a phase detector for detecting a phase difference between the first divided signal and the second divided signal; and an adjusting unit for synchronizing the internal clock and the external clock, based on the phase difference.