Patent
Using a soft decoder with hard data
Deepak Sridhara,Arvind Sridharan,Ara Patapoutian +2 more
- 12 Apr 2012
21
TL;DR: In this paper, a method for reusing a soft decoder involves receiving soft data and hard data from memory cells in a memory device, mapping the soft data to a first set of soft information, and mapping the hard data to another set of low-level soft information.
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Abstract: A method for re-using a soft decoder involves receiving soft data and hard data from memory cells in a memory device, mapping the soft data to a first set of soft information, mapping the hard data to a second set of soft information, and using the soft decoder to decode both the first set and second set of soft information.
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Citations
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Soft-decision compensation for flash channel variation
Yunxiang Wu,Earl T. Cohen +1 more
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TL;DR: In this paper, the LLR soft-decision information sets are pre-calculated at respective read-equilibrium points corresponding to mean shifts and variance change in the actual charge-state distributions of the flash memory channel.
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Method for performing memory access management, and associated memory device and controller thereof
Tsung-Chieh Yang,Hsiao-Te Chang,Wen-Long Wang +2 more
- 17 Jul 2013
TL;DR: In this paper, a method for performing memory access management includes: with regard to a same flash cell of a flash memory, receiving a first digital value outputted by the Flash memory, requesting the flash memory to output at least one second digital value, wherein the first digital values and the at least second digital values are utilized for determining information of a same bit stored in the Flash cell, and a number of various possible states of the flash cell correspond to a possible number of bit(s).
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Method for performing error correction, associated memory apparatus and associated controller thereof
Ping-Yen Tsai
- 11 Aug 2014
TL;DR: In this paper, a method for performing error correction, an associated memory apparatus and an associated controller thereof are provided, where the data used in a hard decoding period can be wholly or partially reserved, and the reserved data can be used in soft decoding period.
11
Patent
Performance optimization in soft decoding of error correcting codes
Aman Bhatia,Naveen Kumar,Yi-Min Lin,Lingqi Zeng +3 more
- 14 Feb 2017
TL;DR: In this paper, the first message comprising reliability information corresponding to each bit in the first codeword, determining a plurality of least reliable bits, and then decoding one or more of the flipped messages using a hard decoder to generate candidate codewords.
7
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Adaptive hard and soft bit decoding
Pitamber Shukla,Joanna Lai,Henry Chin,Deepak Raghu,Abhilash Ravi Kashyap +4 more
- 27 Dec 2016
TL;DR: In this article, the memory system tracks which adjustments to default values for hard bit read reference voltages are most frequently successful to decode data in non-volatile memory cells, and uses only a subset of the most successful adjustments to the default values.
7
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