Semiconductor memory device and decoding method

K Sakurada, H Uchikawa - US Patent 8,385,117, 2013 - Google Patents
(57) ABSTRACT A memory card decodes three bits of data stored in one memory cell and
belonging to different pages, each being a unit of reading, by iterative calculation using …

Data refresh for non-volatile storage

N Mokhlesi - US Patent 7,859,932, 2010 - Google Patents
5,852,582 A 12/1998 Cleveland et al. 5,896,318 A 4/1999 Asada et al. 5,909,449 A 6, 1999
So et al. 5,963,473 A 10, 1999 Norman 6,151,246 A 11/2000 So et al. 6,226,200 B1 5/2001 …

Multi-tier detection and decoding in flash memories

EF Haratsch, AHS Alhussien - US Patent 9,898,361, 2018 - Google Patents
Methods and apparatus are provided for multi-tier detection and decoding in flash memory
devices. Data from a flash memory device is processed by obtaining one or more read …

Semiconductor memory device

M Shirakawa, T Futatsuyama, K Abe - US Patent 9,892,040, 2018 - Google Patents
A semiconductor memory device includes: a memory cell array including memory strings,
one of the memory strings including memory cells; word lines commonly connected to the …

Methods and apparatus for soft data generation for memory devices based on performance factor adjustment

EF Haratsch, J Yen - US Patent 9,064,594, 2015 - Google Patents
Methods and apparatus are provided for soft data generation for memory devices based on
a performance factor adjustment. At least one soft data value is generated for a memory …

Methods and apparatus for soft data generation for memory devices

EF Haratsch, M Ivkovic, V Krachkovsky… - US Patent …, 2014 - Google Patents
PCT Pub. Date: Apr. 8, 2010 hard read value. The hard read value may be one or more of
data bits, Voltage levels, current levels and resistance levels.(65) Prior Publication Data The …

Flash memory devices having multi-bit memory cells therein with improved read reliability

D Chae, J Han - US Patent 8,479,083, 2013 - Google Patents
Integrated circuit memory devices include an array of non volatile N-bit memory cells, where
N is an integer greater than one. Control circuitry is also provided to reliably read data from …

Semiconductor memory device

N Shibata - US Patent 9,190,161, 2015 - Google Patents
According to one embodiment, a semiconductor includes a memory cell, a bit line, a word
line, a sense amplifier, and a control circuit. The memory cell stores n levels (where n is a …

Cell-level statistics collection for detection and decoding in flash memories

Z Chen, EF Haratsch - US Patent 9,502,117, 2016 - Google Patents
Methods and apparatus are provided for collecting cell-level statistics for detection and
decoding in flash memories. Data from a flash memory device is processed by obtaining one …

Methods, devices, and systems for data sensing in a memory system

MA Helm, U Chandrasekhar - US Patent 8,631,288, 2014 - Google Patents
BACKGROUND Memory devices are typically provided as internal, semi conductor,
integrated circuits and/or external removable devices in computers or other electronic …