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:
Jul. 14, 2015
Filed:
Jul. 05, 2013
Samsung Electronics Co., Ltd., Suwon-si, KR;
Jung-Sik Kim, Seoul, KR;
Jung-Bae Lee, Seongnam-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Abstract
A semiconductor memory device which stores refresh period information thereby adjusting a refresh period and a method of operating the same. The semiconductor memory device includes a cell array and a refresh information storing unit. The cell array includes one or more cell regions each having a plurality of memory cells. The refresh information storing unit is configured to store first information including a first refresh period and second information including a second refresh period in correspondence to each of the cell regions. Memory cells included in each of the cell regions are refreshed at the first refresh period according to the first information in a first refresh time band and are refreshed at the second refresh period according to the second information in a second refresh time band.