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. 10, 2011
Filed:
Dec. 27, 2007
Applicant:
Hwang Hur, Kyoungki-do, KR;
Inventor:
Hwang Hur, Kyoungki-do, KR;
Assignee:
Hynix Semiconductor Inc., , KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention intends to provide a semiconductor memory device including a delay locked loop (DLL) circuit capable of generating a duty-corrected delay locked clock. A semiconductor memory device includes: a DLL circuit for generating a delay locked clock through a delay locked operation; and a duty-correction circuit for correcting a duty ratio of the delay locked clock by using the delay locked clock and a divided clock generated by dividing the delay locked clock by an even value.