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. 22, 2018
Filed:
Jan. 03, 2013
Applicants:
Eun-sung Seo, Seoul, KR;
Chul-woo Park, Yongin-si, KR;
Hong-sun Hwang, Suwon-si, KR;
Inventors:
Assignee:
SAMSUNG ELECTRONICS CO., LTD., Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 11/406 (2006.01);
U.S. Cl.
CPC ...
G11C 7/00 (2013.01); G11C 11/40611 (2013.01);
Abstract
A memory system includes at least one memory device and a memory controller. The at least one memory device includes a refresh request circuit that generates refresh request signals at timings based on data retention times of memory cells, such as based on individual data retention times of a memory cell row. The memory controller schedules operation commands for the at least one memory device in response to the received refresh request signals.