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. 04, 2021
Filed:
Nov. 21, 2019
SK Hynix Inc., Gyeonggi-do, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
SK hynix Inc., Gyeonggi-do, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
Abstract
A semiconductor memory system including: a semiconductor memory device suitable for storing a codeword; and an LDPC decoder suitable for decoding the codeword to generate decoded data, wherein the LDPC decoder includes: a message passing decoding component suitable for performing a first decoding operation of decoding the codeword, and calculating the minimum value among numbers of UCNs; and an error path detection component suitable for detecting error path candidates using a tree in which each of UCNs corresponding to the minimum value is set to a root node, sorting the detected error path candidates in ascending order of maximum LLRs, resetting symbol values and LLRs of variable nodes in the error path candidates, and providing the message passing decoding unit with information on the reset symbol values and LLRs.