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. 30, 2025
Filed:
Jul. 25, 2023
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Woongrae Kim, Gyeonggi-do, KR;
Assignee:
SK hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/406 (2006.01); G06F 12/0811 (2016.01); G06F 12/14 (2006.01); G11C 29/42 (2006.01); G11C 29/44 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40622 (2013.01); G06F 12/0811 (2013.01); G06F 12/1433 (2013.01); G11C 11/40615 (2013.01); G11C 29/42 (2013.01); G11C 29/4401 (2013.01);
Abstract
A memory system includes: a normal memory area suitable for storing normal data; a security memory area suitable for storing security data; a first row hammer detection circuit suitable for sampling and counting a portion of rows that are activated in the normal memory area to select first rows that need to be refreshed; and a second row hammer detection circuit suitable for counting all rows that are activated in the security memory area to select second rows that need to be refreshed.