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.

Date of Patent:
May. 31, 2016

Filed:

Nov. 11, 2013
Applicant:

Samsung Electronics Co., Ltd.;

Inventors:

Woo-Jin Lee, Seoul, KR;

Dae-Hyun Kim, Hwaseong-si, KR;

Sang-Yun Kim, Hwaseong-si, KR;

Jae-Sung Kim, Suwon-si, KR;

Young-Soo Sohn, Seoul, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 11/406 (2006.01); G11C 29/02 (2006.01); G11C 29/50 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40611 (2013.01); G11C 11/40622 (2013.01); G11C 29/028 (2013.01); G11C 29/50016 (2013.01);
Abstract

A refresh address generator may include a lookup table including a first portion storing a first group of addresses associated with a first data retention time, and a second portion storing a second group of addresses associated with a second data retention time different from the first data retention time, wherein the addresses of the first portion are more frequently accessed than the addresses of the second portion to refresh the memory cells corresponding to the addresses. Systems and methods may also implement such refresh address generation.


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