Method of managing data access of a storage medium and storage controller

A technology of storage controller and storage medium, which is applied in the direction of memory system, electrical digital data processing, special data processing application, etc., to achieve the effect of improving performance

Active Publication Date: 2011-05-18
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, file defragmentation, applied to SSD drives so that the contents of multiple files are stored in contiguous storage areas, may have certain advantages provided that the useful life of the flash memory is not affected

Method used

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  • Method of managing data access of a storage medium and storage controller
  • Method of managing data access of a storage medium and storage controller
  • Method of managing data access of a storage medium and storage controller

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Embodiment Construction

[0023] Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" includes any direct and indirect electrical connection means. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device may be directly electrically connect...

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Abstract

The invention relates to a method of managing data access of a storage medium and a storage controller. The storage controller for managing data access of the storage medium comprises: a storage unit, storing an address mapping table to record at least a physical address of a first data stored in the storage medium, where the physical address of the first data is mapped to a logical address of the first data; and a processing unit, coupled to the storage unit, wherein when receiving a command for handling at least the first data in the storage medium internally, the processing unit processes the address mapping table to serve the command without controlling the storage medium to physically accessing at least the first data stored therein; a plurality of command sets are sent through effective load data of the single command; and the processing unit searches the plurality of command sets sent by the single command for subsequently updating the address mapping table so as to respond the single command. One advantage of the invention is to improve the performance for collating the paper fragmentation.

Description

technical field [0001] The present invention relates to the access of the storage medium, more specifically, to the data access management method and the storage controller of the storage medium. Background technique [0002] Generally, the contents of fragmented files are divided into chunks and stored in multiple locations in the storage medium. As time progresses, fragmentation occurs due to the addition, deletion and modification of files on the storage medium. Therefore, defragmentation (defragmentation) technology is generally used in the file system to reduce the number of fragmented files. Taking a hard disk drive as an example, the data access performance largely depends on the seeking performance of the magnetic head. If the content of the file can be recorded in the continuous storage area on the hard disk, the tracking time required by the magnetic head can be significantly shortened, thereby improving the data access performance accordingly. For a solid-state...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F12/06G06F17/30G06F3/06
CPCG06F2212/401G06F3/0679G06F3/0611G06F3/0641G06F3/0616G06F12/0246G06F3/0608G06F2212/7201
Inventor 蔡政宏陈宏庆
Owner MEDIATEK INC
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