Dummy read control method and device and medium

Abstract

The invention discloses a Dummy read control method and device and a medium, and relates to the technical field of hard disks. According to the Dummy read control method provided by the invention, the working environment of the Nand Flash memory is detected every first preset time, and the Dummy read operation is executed on the Nand Flash memory every corresponding preset time interval according to the working environment of the Nand Flash memory. Compared with a current mode of performing Dummy read by adopting a fixed time interval, the Nand Flash memory can adopt different preset time intervals according to different working environments by detecting the working environment, so that the problems that the influence of a first reading effect cannot be accurately eliminated due to the fact that the selected time interval is too large and redundant operation is caused due to the fact that the selected time interval is too small are solved, and the reliability of the Nand Flash memory is improved. And the storage efficiency of the Nand Flash memory is improved.

Description

technical field [0001] The present application relates to the technical field of hard disks, in particular to a dummy read control method, device and medium. Background technique [0002] In recent years, with the rise of computer information technology, hard disk technology related to information storage has become a hot technical field. Among many hard disks, Nand Flash is currently the most widely used storage medium. It is composed of countless transistor circuits and is finally used as a The unit is packaged into a flash memory particle chip. The principle is to record data by presenting different voltage values ​​with different charges stored in the storage unit. Due to the hardware electrical characteristics of Nand particles, for a physical block that has written data, when When there is no Read operation for a period of time, the probability of bit inversion of the data will increase during the user's first read operation, that is, there will be a higher RBER. This ...

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Problems solved by technology

[0005] The purpose of this application is to provide a kind of dummy read control method, in order to solve the problem that the current dummy read operation is performed at fixed time intervals, and the time interval is relatively large, and the influence of the first read effect cannot be accurately eliminated, and the time interval is relatively small. , will introduce a large number of redundant operations and reduce the access efficiency of users to Nand Flash memory

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