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Data management method, storage system and controller used for flash memory

A data management system and data management technology, applied in the field of storage systems and controllers, can solve the problem of low utilization of physical blocks, achieve the effect of reducing the number of times and increasing the speed

Active Publication Date: 2013-01-23
EMTOPS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the frequently updated data in the chaotic write mode is a small amount of data, and the progress of the flash memory process makes the design capacity of the programmable unit and the erasable unit larger and larger, which will make the data used for this Low physical block utilization in chaotic write mode

Method used

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  • Data management method, storage system and controller used for flash memory
  • Data management method, storage system and controller used for flash memory
  • Data management method, storage system and controller used for flash memory

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Embodiment Construction

[0054] figure 2 is a schematic block diagram illustrating a flash memory storage system according to an embodiment of the present invention. Please refer to figure 2 , the flash memory storage system 100 includes a controller 110 , a transmission connection interface 120 and a flash memory 130 .

[0055] Generally, the flash storage system 100 is used together with the host 200 so that the host 200 can write data into the flash storage system 100 or read data from the flash storage system 100 . In this embodiment, the flash storage system 120 is a solid state drive (SSD). But it must be understood that in another embodiment of the present invention, the flash memory storage system 120 can also be a memory card or a flash drive.

[0056] The controller 110 executes a plurality of instructions implemented in the form of hardware or firmware to cooperate with the transmission connection interface 120 and the flash memory 130 to perform operations such as storing, reading and...

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PUM

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Abstract

The invention relates to a data management method, a flash memory storage system using the data management method and a controller thereof. The data management method is suitable for accessing the flash memory of the flash memory storage system, wherein the flash memory comprises a plurality of physical area blocks which are at least grouped into a data area and a standby area. The data management method comprises the step of configuring a plurality of logical area blocks for being accessed by a host machine. The method also comprises the steps of dividing a plurality of physical parts in each physical area block and mapping the logical area blocks into the divided physical parts respectively. The method also comprises the step of accessing the mapped physical parts according to the logical area blocks to be accessed by the host machine. Therefore, the utilization rate of the physical area blocks in the flash memory storage system can be improved, and the access speed of the area blocks is enhanced.

Description

technical field [0001] The present invention relates to a data management method, and in particular to a data management method for accessing flash memory, a storage system and a controller using the method. Background technique [0002] The rapid growth of digital cameras, cell phone cameras, and MP3 players has led to a rapid increase in consumer demand for storage media. Because flash memory (Flash Memory) has the characteristics of data non-volatility, power saving, small size and no mechanical structure, it is suitable for portable applications, and is most suitable for such portable products powered by batteries. A memory card is a storage device that uses a NAND flash memory as a storage medium. Due to its small size, large capacity and easy portability, memory cards have been widely used for storing important personal data. Therefore, the flash memory industry has become a very popular part of the electronics industry in recent years. [0003] Generally, the flash...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/06
Inventor 叶志刚
Owner EMTOPS ELECTRONICS CORP