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:
Oct. 03, 2017
Filed:
Jan. 19, 2017
Applicant:
SK Hynix Inc., Icheon-si, Gyeonggi-do, KR;
Inventors:
Da In Im, Icheon-si, KR;
Young Suk Seo, Icheon-si, KR;
Assignee:
SK hynix Inc., Icheon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01); H03K 5/156 (2006.01); H03K 5/14 (2014.01); G01R 29/02 (2006.01); H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
H03K 5/1565 (2013.01); G01R 29/023 (2013.01); H03K 5/14 (2013.01); H03K 2005/00078 (2013.01);
Abstract
A duty cycle detector may include a rising clock detection unit enabled in response to a first control signal; a falling clock detection unit enabled in response to a second control signal with a different activation timing from the first control signal; and a comparison unit configured to compare an output signal of the rising clock detection unit to an output signal of the falling clock detection unit in response to a comparison enable signal, and output a duty cycle detection signal.