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Memory management method, memory storage device and memory control circuit unit

A memory management and control circuit technology, applied in the fields of memory storage devices, memory control circuit units, and memory management methods, can solve problems such as affecting the correctness of data

Active Publication Date: 2018-11-02
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is an error in the compressed data, this error may seriously affect the correctness of the data obtained by decompressing this compressed data

Method used

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  • Memory management method, memory storage device and memory control circuit unit
  • Memory management method, memory storage device and memory control circuit unit
  • Memory management method, memory storage device and memory control circuit unit

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Experimental program
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Embodiment Construction

[0098] Generally speaking, 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). Typically memory storage devices are used with a host system such that the host system can write data to or read data from the memory storage device.

[0099] figure 1 It is an exemplary schematic diagram of a host system and a memory storage device according to an exemplary embodiment of the present invention. figure 2 It is an exemplary schematic diagram of a computer, an input / output device and a memory storage device according to an exemplary embodiment of the present invention.

[0100] Please refer to figure 1 , the host system 11 generally includes a computer 12 and an input / output (input / output, I / O for short) device 13 . The computer 12 includes a microprocessor 122 , a random access memory (random access memory, RAM for short) 124 , a system bus 126 and a data transmission inter...

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PUM

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Abstract

The invention provides a memory management method, a memory storage apparatus and a memory control circuit unit. The memory management method comprises the steps that a first data management rule for a first type of physical unit and a second data management rule for a second type of physical unit are defined, wherein the first data density of the first type of physical unit is lower than the second data density of the second type of physical unit; if the first physical unit belongs to the first type of physical unit, the first physical unit is managed according to the first data management rule to endow the data stored in the first physical unit with a first trust level; and if the first physical unit belongs to the second type of physical unit, the first physical unit is managed according to the second data management rule to endow the data stored in the first physical unit with a second trust level, wherein the second trust level is higher than the first trust level.

Description

technical field [0001] The present invention relates to a memory management mechanism, and in particular to a memory management method, a memory storage device and a memory control circuit unit. Background technique [0002] Digital cameras, mobile phones, and MP3 players have grown rapidly in recent years, making consumers' demand for storage media also increase rapidly. Since the rewritable non-volatile memory module (for example, flash memory) has the characteristics of data non-volatility, power saving, small size, and no mechanical structure, it is very suitable for being embedded in various portable multimedia devices listed above. device. [0003] Generally speaking, in order to save storage space, some data to be written into the rewritable non-volatile memory module will be compressed into compressed data with a smaller data size before being written into the rewritable non-volatile memory module. permanent memory module. Then, after the compressed data is read, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 叶志刚
Owner PHISON ELECTRONICS