Risk assessment method based on data priority, storage device and control circuit

A data priority and risk assessment technology, applied in the field of risk assessment, can solve problems such as inability to accurately reflect risk levels

Pending Publication Date: 2022-07-29
HEFEI CORE STORAGE ELECTRONICS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above evaluation method cannot accurately reflect the risk level corresponding to the health degree of different types (for example, different importance) of data in the rewritable non-volatile memory module

Method used

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  • Risk assessment method based on data priority, storage device and control circuit
  • Risk assessment method based on data priority, storage device and control circuit
  • Risk assessment method based on data priority, storage device and control circuit

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Embodiment Construction

[0018] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and description to refer to the same or like parts.

[0019] Generally, a memory storage device (also called a memory storage system) includes a rewritable non-volatile memory module and a controller (also called a control circuit). A memory storage device can be used with a host system so that the host system can write data to or read data from the memory storage device.

[0020] figure 1 It is a schematic diagram of a host system, a memory storage device, and an input / output (I / O) device according to an exemplary embodiment of the present invention. figure 2 It is a schematic diagram of a host system, a memory storage device, and an I / O device according to an exemplary embodiment of the present invention.

[0021] Please refer to figure 1 ...

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Abstract

The invention provides a risk assessment method based on data priority, a memory storage device and a memory control circuit unit. The method comprises the following steps: receiving a query instruction from a host system; in response to the query instruction, data health degree detection is executed on a rewritable nonvolatile memory module, and data with multiple data priorities are stored in the rewritable nonvolatile memory module; generating risk assessment information according to a detection result, wherein the risk assessment information reflects the health degree of data with different data priorities in the rewritable nonvolatile memory module through different risk levels; and transmitting the risk assessment information to the host system. Therefore, the risk assessment efficiency of the rewritable nonvolatile memory module can be improved.

Description

technical field [0001] The present invention relates to a risk assessment technology, in particular to a risk assessment method based on data priority, a memory storage device and a memory control circuit unit. Background technique [0002] The rapid growth of smartphones, tablets and personal computers over the past few years has resulted in a rapid increase in consumer demand for storage media. Since rewritable non-volatile memory modules (eg, flash memory) have the characteristics of data non-volatility, power saving, small size, and no mechanical structure, they are very suitable for built-in in various portable multimedia devices exemplified above. [0003] The health of rewritable non-volatile memory modules gradually declines over time. In general, the health and / or usage of a rewritable non-volatile memory module can be assessed by counting erase counts, program counts, and bit error rates of memory cells in the rewritable non-volatile memory module life. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C29/00
CPCG11C29/00G06F12/0246G11C16/349G11C2029/0411G11C29/44G06F2212/7204G06F2212/1016G06F12/1433G11C16/3422G11C16/3431
Inventor 王智麟胡玥陶勤勤饶东升杨少峰陈阳
Owner HEFEI CORE STORAGE ELECTRONICS LTD
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