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:
Jun. 28, 2022
Filed:
Oct. 14, 2020
SK Hynix Inc., Gyeonggi-do, KR;
Jung Ho Lim, Gyeonggi-do, KR;
Ja Beom Koo, Gyeonggi-do, KR;
SK hynix Inc., Gyeonggi-do, KR;
Abstract
A semiconductor memory device includes a cell array including a plurality of word lines; a plurality of address storing circuits suitable for sequentially storing a sampling address as one of a plurality of latch addresses, and sequentially outputting each of the latch addresses as a target address according to a refresh command; a duplication decision circuit suitable for preventing the sampling address from being stored in the address storing circuits when the sampling address is identical to any of the latch addresses stored in the address storing circuits; and a row control circuit suitable for refreshing one or more word lines based on the target address in response to the refresh command.