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:
Sep. 11, 2012
Filed:
Mar. 31, 2010
Applicants:
Hyung-dong Kim, Suwon-si, KR;
Byung-hwan SO, Suwon-si, KR;
Inventors:
Hyung-Dong Kim, Suwon-si, KR;
Byung-Hwan So, Suwon-si, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method of estimating a self refresh period of a semiconductor memory device according to an exemplary embodiment, a plurality of internal address signals are reset in response to a refresh reset signal. The plurality of internal address signals are sequentially changed synchronously with an oscillation signal. A refresh completion signal is generated based on the plurality of internal address signals. The self refresh period is detected based on the refresh reset signal and the refresh completion signal.