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Memory system, memory controller and method for operating memory system

A memory controller and memory system technology, applied in static memory, read-only memory, digital memory information, etc., can solve the problem of soft decision decoding performance reduction

Pending Publication Date: 2021-01-05
SK HYNIX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, if the threshold voltage distribution of memory cells storing data is degraded due to various factors, the performance of soft-decision decoding may also decrease

Method used

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  • Memory system, memory controller and method for operating memory system
  • Memory system, memory controller and method for operating memory system
  • Memory system, memory controller and method for operating memory system

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Embodiment Construction

[0080] Hereinafter, through various examples of embodiments of the present disclosure, a memory system, a memory controller, and a method for operating the memory system are described in detail with reference to the accompanying drawings. Throughout the specification, references to "an embodiment," "another embodiment," etc. are not necessarily to only one embodiment, and different references to any such phrase are not necessarily to the same embodiment.

[0081] figure 1 is a block diagram that schematically illustrates an example representation of a memory system 100 according to an embodiment of the disclosure.

[0082] refer to figure 1 , the memory system 100 may include a memory device 110 storing data, and a memory controller 120 controlling the memory device 110 .

[0083] The memory device 110 includes a plurality of memory blocks and operates in response to the control of the memory controller 120 . Operations of the memory device 110 may include, for example, r...

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Abstract

Embodiments of the invention relate to a memory system, a memory controller and a method for operating the memory system. A memory system, a memory controller and a method for operating a memory system are disclosed. Specifically, by performing soft-decision decoding for data read from some of the plurality of memory cells based on a first optimum read voltage of one or more optimum read voltages,based on reliability values of one or more first threshold voltage sections, and one or more second threshold voltage sections and also based on the first and second threshold voltage sections, it ispossible to provide a memory system, a memory controller and a method for operating a memory system, capable of increasing an error correction effect by soft-decision decoding even in the case wherethreshold voltage distributions of memory cells in which data is stored are degraded.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. 119(a) to Korean Patent Application No. 10-2019-0079065 filed with the Korean Intellectual Property Office on July 2, 2019, which is hereby incorporated by reference in its entirety. technical field [0003] Various embodiments relate generally to memory systems, memory controllers, and methods for operating memory systems. Background technique [0004] The memory system stores data based on requests from hosts such as computers, mobile terminals such as smartphones and tablets, or various other electronic devices. Memory systems may include devices that store data on magnetic disks, such as hard disk drives (HDDs), or that store data in non-volatile memory, such as solid-state drives (SDDs, universal flash (UFS) devices, or embedded MMC (eMMC) devices). [0005] The memory system may also include a memory controller for controlling the memory devices of the system. ...

Claims

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Application Information

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IPC IPC(8): G11C16/34G06F11/10
CPCG11C16/3404G06F11/1068G06F13/1668H03M13/6325H03M13/1111G11C11/5642G11C2211/5632G11C16/26G11C16/30G11C29/52G11C11/4087G11C11/4074G11C11/409
Inventor 金修敬
Owner SK HYNIX INC