Flash Reliability Boost Huffman coding (FRBH): Co-optimization of data compression and V_th distribution modulation to enhance data-retention time by over 2900x

Abstract

Highly reliable data compression technique. Flash Reliability Boost Huffman coding (FRBH) is proposed for TLC NAND Flash memory. By decreasing the write data size and optimizing the memory cell V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sub> distribution at the same time, FRBH decreases data-retention errors by 92% and increases data-retention time by over 2900 times.