메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
Jinuk Kim (Hanyang University) Jihun Jung (Hanyang University) Sungju Park (Hanyang University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.20 No.1
발행연도
2020.2
수록면
63 - 75 (13page)
DOI
10.5573/JSTS.2020.20.1.063

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
With the ever-increasing requirement for higher performance of system and memory with a huge storage capacity, Multi-Level Cell (MLC) flash memory holds a dominant position in flash memory. However, more errors are observed in flash memory as the storage size increases. Thus, various error correction techniques (e.g., Hamming, BCH, LDPC) have been adopted to maintain the reliability of data stored in flash memory. Retention error, which occurs in data that is not accessed for a long period after stored, is the major contributor of flash memory error. The incidence of retention error is highly related to p-e (program-erase) cycle of flash memory. However, in system level, flash memory should be erased before modifying data even if ECC (Error correction code) decoding is completed. This erase operation increases the p-e cycle of flash memory, resulting in high incidence of retention error. This paper introduces a safe in-place reprogramming scheme at system level to optimally correct errors without erasing. Additionally, LDPC decoding scheme uses information about the uncorrected errors to improve the performance of the LDPC decoder. Through an experiment that simulates real NAND flash memory chips, safe reprogramming scheme at system level and proposed LDPC decoding method are explicitly demonstrated. As a result of proposed in-place reprogramming, reliable retention time of data is extended. Also, proposed LDPC decoding along with safe reprogramming scheme reduced the number of average iterations up to 33% while maintaining a robust correction ability.

목차

Abstract
I. INTRODUCTION
II. BACKGROUND
III. PROPOSED METHOD
IV. EXPERIMENTAL RESULTS
V. CONCLUSIONS
REFERENCES

참고문헌 (25)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0