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:
Jan. 04, 2011
Filed:
Dec. 27, 2007
Applicants:
Dae-han Kwon, Kyoungki-do, KR;
Kyung-hoon Kim, Kyoungki-do, KR;
Dae-kun Yoon, Kyoungki-do, KR;
Taek-sang Song, Kyoungki-do, KR;
Inventors:
Dae-Han Kwon, Kyoungki-do, KR;
Kyung-Hoon Kim, Kyoungki-do, KR;
Dae-Kun Yoon, Kyoungki-do, KR;
Taek-Sang Song, Kyoungki-do, KR;
Assignee:
Hynix Semiconductor Inc., , KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes a pulse signal generating unit for generating a plurality of pulse signals each of which has a different pulse width from each other, a signal multiplexing unit for outputting one of the plurality of the pulse signals as an enable signal in response to frequencies of external clock signals, and a duty ratio detecting unit for detecting a duty ratio of the external clock signals in response to the enable signal.