Method for improving flash memory medium read-write speed
A technology of read and write speed and medium, applied in the direction of memory address/allocation/relocation, etc., can solve the problems of inconvenient management, time-consuming process, wasteful recycling, etc., to achieve the effect of easy implementation, improve read and write speed, and avoid a large number of fragments
Active Publication Date: 2013-05-01
NETAK TECH KO LTD
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Problems solved by technology
Due to the characteristics of the flash memory medium, if writing data to a page does not start from the beginning of the page, the original data saved in the page must be moved to ram, the new data to be written is written to ram, and then the original Data and new data are written into the page together. The process is time-consuming and inconvenient to manage. It also generates a large number of fragments in the page, and it takes a lot of time to recycle these fragments.
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[0020] The present invention proposes the first embodiment, based on the Fat file system, the reading and writing speed of the flash memory medium is improved. refer to figure 1 , showing the data organization form of the Fat file system. The Fat file system is a file system widely used by windows, linux and most mobile devices and handheld device operating systems. Taking the fat 16 file system as an example, the Fat file system divides the flash media into two parts: the data area and the hidden area.
[0021] The data area is used to store subdirectories and data, accounting for more than 90% or even more of the storage space of the flash medium. The Fat file system manages data in clusters. A file is composed of multiple clusters. A cluster is multiple sectors. Each cluster is labeled separately. The data storage address can be found directly through the cluster number.
[0022] The hidden area is used to store parameters and indexes required for managing flash media, i...
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The invention provides a method for improving read-write speed of a flash memory medium, which comprises the following steps: calculating offset amount; carrying out offset processing on data operation according to the offset amount; and executing the data operation. The method for improving the read-write speed of the flash memory medium can make a minimum write-in unit page of the flash memory medium aligned with a minimum write-in unit cluster of a file system according to the file system (such as fat16, fat 32, ntfs and the like), make each cluster to be formed by a plurality of pages, thereby realizing remarkable improvement of the read-write speed, in particular to write speed when the flash memory medium reads and writes data, avoiding generation of massive fragments, not changing the hardware structure of the flash memory medium or the file system with easy realization.
Description
technical field [0001] The invention relates to the field of static memory, in particular to a method for improving the reading and writing speed of a flash memory medium. Background technique [0002] With the rapid development of flash media (flash) technology and applications, the read and write speed of flash media has become an important indicator to measure the performance of flash media. Improving the read and write speed of flash media will greatly improve data processing efficiency and help expand the application of flash media . The existing file management system such as the fat file system writes data to the flash memory medium by first writing the hidden areas such as the directory area and the fat area, and then writing the data area. However, flash media is managed with a page as the smallest unit. The data to be written often does not start from the beginning of the page of the flash media, but starts from the middle of a certain page and ends at the middle ...
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IPC IPC(8): G06F12/02
Inventor 万红波
Owner NETAK TECH KO LTD