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Data merging method, memory storage device and memory control circuit unit

A control circuit and memory technology, applied in memory systems, electrical digital data processing, instruments, etc., can solve the problems of increasing the access times of memory storage devices, speeding up the loss of memory storage devices, etc., so as to reduce the number of accesses and improve the service life. Effect

Active Publication Date: 2020-05-12
PHISON ELECTRONICS
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  • Claims
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Problems solved by technology

However, in the data integration program, if the logical units mapped to the multiple physical units selected as source nodes are more scattered, the more tables that record the management information (such as mapping information) of these logical units need to be accessed , thereby increasing the access times of the memory storage device and accelerating the wear and tear of the memory storage device (such as a storage unit)

Method used

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  • Data merging method, memory storage device and memory control circuit unit
  • Data merging method, memory storage device and memory control circuit unit
  • Data merging method, memory storage device and memory control circuit unit

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Embodiment Construction

[0099] 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.

[0100] figure 1 It is 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 another exemplary embodiment of the present invention.

[0101] 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 p...

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Abstract

An example embodiment of the present invention provides a data merging method for a rewritable non-volatile memory module, where the rewritable non-volatile memory module includes a plurality of physical units. The method comprises the following steps: obtaining a first logic distance value between a first physical unit and a second physical unit in the physical units, wherein the first logic distance value reflects the logic dispersion degree between at least one first logic unit mapped by the first physical unit and at least one second logic unit mapped by the second physical unit; and performing a data merging operation according to the first logical distance value to copy valid data from a source node to a recovery node.

Description

technical field [0001] The invention relates to a flash memory technology, in particular to a data integration 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] When the memory storage device leaves the factory, some of the physical units in the memory storage device are configured as a plurality of idle physical units, so that these idle physical units are used to store new data. After a period of use, the number of idle physical units in the memory storage device will gradually decrease. Memory storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02
CPCG06F12/0253G06F2212/1036
Inventor 陈建文林庭玮
Owner PHISON ELECTRONICS
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