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Memory device with enhanced error correction

A controller and decoder technology, applied in static memory, error detection/correction, response error generation, etc., can solve problems such as increasing decoding delay and power consumption, decoding failure, and error estimation, and reduce decoding delay and function. power consumption, enhanced correction capability, enhanced performance

Active Publication Date: 2020-07-28
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, estimating the probability of bit flips based on the characteristics of the noisy data to be decoded (i.e., encoded data that is read from memory and has potential bit flips) may lead to erroneous estimates because the noisy data may have a large number of bit flips
Tuning decoder parameters based on misestimated statistics may increase decoding latency and power consumption, and may cause decoding failures

Method used

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  • Memory device with enhanced error correction
  • Memory device with enhanced error correction
  • Memory device with enhanced error correction

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Embodiment Construction

[0070] In the following embodiments, reference is made to the accompanying drawings constituting a part of the embodiments. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The exemplary embodiments described in the detailed description, drawings, and claims are not intended to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It should be readily understood that the aspects of the disclosure, as generally described herein and illustrated in the drawings, may be arranged, substituted, combined and designed in a wide variety of different configurations, all of which are expressly conceived and constitute an integral part of the disclosure. part.

[0071] Disclosed herein are methods, devices, and systems for obtaining source statistics with high accuracy while maintaining high throughput by exploiting correlation...

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PUM

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Abstract

Disclosed herein are memory devices, systems, and methods of content-aware decoding of encoded data. In one aspect, an encoded data chunk is received and one or more characteristics, such as source statistics, are determined. A similar data chunk (that may, e.g., contain data of a similar type) with comparable statistics may be sought. The similar data chunk may, for example, have source statistics that are positively correlated to the source statistics of the encoded data chunk to be decoded. Decoder parameters for the encoded data may be set to correspond with decoder parameters suited to the similar data chunk. The encoded data chunk is decoded using the new decoder parameters. Decoding encoded data based on content can enhance performance, reducing decoding latency and / or power consumption.

Description

Background technique [0001] The following descriptions are provided to aid the reader's understanding. None of the information presented or references cited is admitted to be prior art. [0002] Electronic data stored in computer memory devices may be subject to data corruption to varying degrees, which introduces unintentional errors into the data during writing, reading, storage, transmission or processing. Data corruption can lead to valuable data loss and system crashes. Controllers associated with memory devices may employ error correction code (ECC) decoders to manage data errors. ECC decoders, such as low-density parity-check (LDPC) decoders, can perform error correction based on the probability that each bit has flipped (eg, one should be zero and vice versa). An ECC decoder using default parameters (which may correspond to the case where the data is uniformly distributed) is not as efficient as a decoder using decoding parameters more suitable for decoding non-unif...

Claims

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Application Information

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IPC IPC(8): G06F11/10G11C29/56
CPCG06F11/1012G11C29/56H03M13/3723H03M13/3707G06F11/1008H03M13/3715G06F11/1076
Inventor S.阿赫滕伯格O.费恩齐尔伯D.D.阿夫拉哈姆
Owner WESTERN DIGITAL TECH INC