TWI353521B - Soft-input soft-output decoder for nonvolatile mem - Google Patents

Soft-input soft-output decoder for nonvolatile mem Download PDF

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Publication number
TWI353521B
TWI353521B TW096134734A TW96134734A TWI353521B TW I353521 B TWI353521 B TW I353521B TW 096134734 A TW096134734 A TW 096134734A TW 96134734 A TW96134734 A TW 96134734A TW I353521 B TWI353521 B TW I353521B
Authority
TW
Taiwan
Prior art keywords
soft
mem
nonvolatile
output decoder
input
Prior art date
Application number
TW096134734A
Other versions
TW200823666A (en
Inventor
Yigal Brandman
Kevin M Conley
Original Assignee
Sandisk Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US11/536,327 priority Critical patent/US7904783B2/en
Priority to US11/536,286 priority patent/US7818653B2/en
Application filed by Sandisk Corp filed Critical Sandisk Corp
Publication of TW200823666A publication Critical patent/TW200823666A/en
Application granted granted Critical
Publication of TWI353521B publication Critical patent/TWI353521B/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C16/00Erasable programmable read-only memories
    • G11C16/02Erasable programmable read-only memories electrically programmable
    • G11C16/06Auxiliary circuits, e.g. for writing into memory
    • G11C16/26Sensing or reading circuits; Data output circuits
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C11/00Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/56Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
    • G11C11/5621Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency using charge storage in a floating gate
    • G11C11/5642Sensing or reading circuits; Data output circuits
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076Parity data used in redundant arrays of independent storages, e.g. in RAID systems
TW096134734A 2006-09-28 2007-09-17 Soft-input soft-output decoder for nonvolatile mem TWI353521B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/536,327 US7904783B2 (en) 2006-09-28 2006-09-28 Soft-input soft-output decoder for nonvolatile memory
US11/536,286 US7818653B2 (en) 2006-09-28 2006-09-28 Methods of soft-input soft-output decoding for nonvolatile memory

Publications (2)

Publication Number Publication Date
TW200823666A TW200823666A (en) 2008-06-01
TWI353521B true TWI353521B (en) 2011-12-01

Family

ID=39015990

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096134734A TWI353521B (en) 2006-09-28 2007-09-17 Soft-input soft-output decoder for nonvolatile mem

Country Status (3)

Country Link
KR (1) KR20090086523A (en)
TW (1) TWI353521B (en)
WO (1) WO2008042593A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI492234B (en) * 2014-04-21 2015-07-11 Silicon Motion Inc Method, memory controller, and memory system for reading data stored in flash memory

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Publication number Priority date Publication date Assignee Title
US7805663B2 (en) 2006-09-28 2010-09-28 Sandisk Corporation Methods of adapting operation of nonvolatile memory
US7904783B2 (en) 2006-09-28 2011-03-08 Sandisk Corporation Soft-input soft-output decoder for nonvolatile memory
US7818653B2 (en) 2006-09-28 2010-10-19 Sandisk Corporation Methods of soft-input soft-output decoding for nonvolatile memory
US7814401B2 (en) * 2006-12-21 2010-10-12 Ramot At Tel Aviv University Ltd. Soft decoding of hard and soft bits read from a flash memory
US7904793B2 (en) 2007-03-29 2011-03-08 Sandisk Corporation Method for decoding data in non-volatile storage using reliability metrics based on multiple reads
WO2008121553A1 (en) * 2007-03-29 2008-10-09 Sandisk Corporation Non-volatile storage with decoding of data using reliability metrics based on multiple reads
US8526230B2 (en) * 2008-07-01 2013-09-03 Lsi Corporation Methods and apparatus for write-side intercell interference mitigation in flash memories
CN102203876B (en) 2008-09-30 2015-07-15 Lsi公司 Methods and apparatus for soft data generation for memory devices
US8406048B2 (en) * 2008-08-08 2013-03-26 Marvell World Trade Ltd. Accessing memory using fractional reference voltages
US8458114B2 (en) 2009-03-02 2013-06-04 Analog Devices, Inc. Analog computation using numerical representations with uncertainty
US8179731B2 (en) 2009-03-27 2012-05-15 Analog Devices, Inc. Storage devices with soft processing
KR101671326B1 (en) * 2010-03-08 2016-11-01 삼성전자주식회사 Nonvolatile memory using interleaving technology and program method thereof
US8504885B2 (en) 2010-03-31 2013-08-06 Lsi Corporation Methods and apparatus for approximating a probability density function or distribution for a received value in communication or storage systems
US8775913B2 (en) 2010-03-31 2014-07-08 Lsi Corporation Methods and apparatus for computing soft data or log likelihood ratios for received values in communication or storage systems
US8429500B2 (en) 2010-03-31 2013-04-23 Lsi Corporation Methods and apparatus for computing a probability value of a received value in communication or storage systems
US8099652B1 (en) 2010-12-23 2012-01-17 Sandisk Corporation Non-volatile memory and methods with reading soft bits in non uniform schemes
US8782495B2 (en) 2010-12-23 2014-07-15 Sandisk Il Ltd Non-volatile memory and methods with asymmetric soft read points around hard read points
US8498152B2 (en) 2010-12-23 2013-07-30 Sandisk Il Ltd. Non-volatile memory and methods with soft-bit reads while reading hard bits with compensation for coupling
US9292377B2 (en) 2011-01-04 2016-03-22 Seagate Technology Llc Detection and decoding in flash memories using correlation of neighboring bits and probability based reliability values
US9898361B2 (en) 2011-01-04 2018-02-20 Seagate Technology Llc Multi-tier detection and decoding in flash memories
US9502117B2 (en) * 2011-03-14 2016-11-22 Seagate Technology Llc Cell-level statistics collection for detection and decoding in flash memories
US8780659B2 (en) * 2011-05-12 2014-07-15 Micron Technology, Inc. Programming memory cells
US9064575B2 (en) 2012-08-03 2015-06-23 Micron Technology, Inc. Determining whether a memory cell state is in a valley between adjacent data states
US8990670B2 (en) 2012-09-28 2015-03-24 Intel Corporation Endurance aware error-correcting code (ECC) protection for non-volatile memories
US9065483B2 (en) * 2013-01-21 2015-06-23 Micron Technology, Inc. Determining soft data using a classification code

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172338B1 (en) * 1989-04-13 1997-07-08 Sandisk Corp Multi-state eeprom read and write circuits and techniques
US6279133B1 (en) * 1997-12-31 2001-08-21 Kawasaki Steel Corporation Method and apparatus for significantly improving the reliability of multilevel memory architecture
US6347125B1 (en) * 1999-01-11 2002-02-12 Ericsson Inc. Reduced complexity demodulator for multi-bit symbols
JP4167646B2 (en) * 2004-11-30 2008-10-15 株式会社東芝 Ofdm demodulator
US20070266296A1 (en) * 2006-05-15 2007-11-15 Conley Kevin M Nonvolatile Memory with Convolutional Coding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI492234B (en) * 2014-04-21 2015-07-11 Silicon Motion Inc Method, memory controller, and memory system for reading data stored in flash memory
US9601219B2 (en) 2014-04-21 2017-03-21 Silicon Motion Inc. Method, memory controller, and memory system for reading data stored in flash memory
US9959165B2 (en) 2014-04-21 2018-05-01 Silicon Motion Inc. Method, memory controller, and memory system for reading data stored in flash memory

Also Published As

Publication number Publication date
TW200823666A (en) 2008-06-01
KR20090086523A (en) 2009-08-13
WO2008042593A1 (en) 2008-04-10

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