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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 direction of memory address/allocation/relocation, input/output to record carrier, etc., can solve the problems of reducing data writing efficiency, data confusion, etc., and achieve the reduction of data writing efficiency Effect

Active Publication Date: 2018-02-27
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the garbage collection program may confuse the sorted valid old data with the newly written data, thereby reducing the data write rate when the rewritable non-volatile memory module performs sequential write (sequential write) in the future. efficiency

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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Embodiment Construction

[0072] 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.

[0073] Figure 1A It is a schematic diagram of a host system and a memory storage device according to an exemplary embodiment of the present invention. Figure 1B is a schematic diagram of a computer, input / output devices, and memory storage devices according to an exemplary embodiment of the present invention. Figure 1C is a schematic diagram of a host system and a memory storage device according to an exemplary embodiment of the present invention.

[0074] Please refer to Figure 1A , the host system 1000 generally includes a computer 1100 and an input / output (input / output, I / O for short) device 1106 . The computer 1100 includes a micropr...

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Abstract

The invention provides a memory management method, a memory storage device and a memory control circuit unit. The method includes: receiving a write command to write first data to the first idle physical erasing unit; selecting the first physical erasing unit, wherein the first physical erasing unit does not include the first idle physical erasing unit and stores A plurality of data, and at least two of the data belong to different logical erasing units; copying and writing valid data in the data to the second idle physical erasing unit, wherein the second idle physical erasing unit is different The cells are physically erased at the first idle.

Description

technical field [0001] The present invention relates to a memory management mechanism, and in particular to a memory management method of a rewritable non-volatile memory module, 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 built into the various memory modules listed above. in portable multimedia devices. [0003] Generally, after the rewritable non-volatile memory module is used for a period of time, the rewritable non-volatile memory module will automatically execute a garbage collection program to release redundant memory space. However, the garbage collection program may c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F12/02
Inventor 朱健华
Owner PHISON ELECTRONICS