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Pipeline delay detection during decoding of data storage devices by

A pipeline and data technology, applied in static memory, error detection/correction, electrical digital data processing, etc., can solve problems such as delay, slowing down other data, and delay in reading operations

Active Publication Date: 2021-07-16
SANDISK TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In some cases, decoding of data can cause delays in read operations
For example, a decoder may use an iterative decoding process to locate data errors, and a large number of errors can create a "bottleneck" condition that slows down the processing of other data, causing delays

Method used

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  • Pipeline delay detection during decoding of data storage devices by
  • Pipeline delay detection during decoding of data storage devices by
  • Pipeline delay detection during decoding of data storage devices by

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Embodiment Construction

[0017] A data storage device according to aspects of the present disclosure is configured to predict or detect pipeline delays associated with a decoding process performed at the data storage device to decode data. To illustrate, a data storage device may be configured to detect that a duration of a decoding process satisfies a threshold. Alternatively or additionally, the data storage device may be configured, based on a syndrome weight associated with the data, based on the number of flipped bits associated with the data, based on a decoding mode change during the decoding process, based on a or multiple other conditions, or combinations thereof, to predict (or detect) pipeline delays.

[0018] In response to the predicted pipeline delay, the data storage device may send a command to the memory of the data storage device. A command may indicate data to be read, a read technique to be used to read the data (eg, soft bit technique), another operation (eg, a read threshold cal...

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Abstract

A method of operation of a data storage device includes inputting data to a decoder of the data storage device. The method also includes transmitting the command to a memory of the data storage device in response to an indication of a pipeline delay associated with a decoding process of decoding data. The commands indicate operations to be performed at the memory in response to pipeline delays.

Description

technical field [0001] The present disclosure relates generally to electronic devices, and more particularly, to data storage devices. Background technique [0002] Data storage devices enable users to store and retrieve data. Examples of data storage devices include volatile memory devices and non-volatile memory devices. Non-volatile memory can retain data after a power loss event, and volatile memory can lose data after a power loss event. [0003] In some cases, data read from a data storage device may suffer from one or more errors. For example, electrical noise can cause a logical "0" value to be read as a logical "1" value (or vice versa). [0004] To enable correction of data errors, a data storage device may encode data using an encoding scheme, such as by adding redundant information to the data prior to storing the data in the data storage device's memory. An encoding scheme may specify a codebook that associates data with codewords of the encoding scheme. Wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C29/42G11C29/04
CPCG11C29/04G11C29/42G11C2029/0411G06F11/1012G06F11/1016
Inventor O.法因西尔伯A.纳冯A.巴扎尔斯基D.古尔S.阿赫滕伯格
Owner SANDISK TECH LLC