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

A technology for memory management and control circuits, which is applied to instruments, electrical digital data processing, and input/output processes of data processing, etc., and can solve problems such as reducing the quality of read data.

Active Publication Date: 2021-06-08
HEFEI CORE STORAGE ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Afterwards, when the host system instructs to read this data (actually uncorrectable data), the memory storage device will regard this data as normal data and read it from the target entity unit and send it to the host system, thereby reducing the number of reads. data quality

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

[0030] Generally speaking, a memory storage device (also called a memory storage system) includes a rewritable non-volatile memory module (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.

[0031] figure 1is a schematic diagram showing 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 showing a host system, a memory storage device and an I / O device according to an exemplary embodiment of the present invention.

[0032] Please refer to figure 1 and figure 2 , the host system 11 generally includes a processor 111 , a random access memory (random access memory, RAM) 112 , a read only memory (read only memory, ROM) 113 and a data transmission interface 114 . The process...

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Abstract

The invention provides a memory management method, a memory storage device and a memory control circuit unit. The method comprises the following steps: storing first management information in a rewritable nonvolatile memory module, wherein the first management information reflects the storage condition of abnormal data in a first entity unit in the rewritable nonvolatile memory module; receiving a reading instruction from a host system, wherein the reading instruction indicates reading of data stored in a logic unit, and the logic unit corresponds to the entity node in the first entity unit; querying the first management information according to the reading instruction; if the query result reflects that the entity node does not store the abnormal data, transmitting the data read from the entity node to the host system; and if the query result reflects that the entity node stores abnormal data, transmitting error information to the host system. Therefore, the data access quality of the memory storage device can be improved.

Description

technical field [0001] The invention relates to a memory management technology, 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 built-in Among the various portable multimedia devices listed above. [0003] In general, the memory storage device can centrally store old data in the rewritable non-volatile memory module and release new idle physical units through data consolidation operations (such as garbage collection procedures). New spare physical units can be used to store new data from the host system. However, in the data integration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0679G06F3/0655G06F3/0604G06F3/064G06F3/061G06F3/0619G06F11/073G06F11/0754G06F11/0787
Inventor 郑燕王志朱凯迪
Owner HEFEI CORE STORAGE ELECTRONICS LTD