Data access method for memory device

Abstract

The invention provides a data access method of storing device, an additional memory planning as a management area and a data collocation area is provided in the storing device, when the storing device receives access instructions transferred from an exterior host computer, checking whether a corresponding address is provided in the management area or not, if the corresponding address is provided in the management area, access operation can be performed in the data collocation; if the corresponding address is not provided in the management area, the data access can be performed in the built-inmemory of the storing device, and the data can be copied to the data collocation area, the management area can be updated, in order that the data can be stored into the additional memory before current failure, thereby improving the access speed of the data next time and reducing the using times and the erasing times of the built-in memory.

Description

technical field [0001] The invention relates to a storage device, in particular to a storage device access method. Background technique [0002] The computer can be said to be one of the greatest inventions of this century. With the progress of the times, it has already become a very important tool in modern society. Various storage devices used to store data, such as hard disks, CDs, flash drives, and memory Cards, etc., are essential computer peripherals for computer users. [0003] The structure of known storage device 1 is as figure 1 As shown, a processor 3, a buffer 4 and a built-in memory 5 are arranged inside the storage device 1, or if the storage device 1 is a traditional hard disk drive, then the processor 3, the buffer 4 and a magnetic disk (not shown in the figure) mark), and the following embodiments are described with memory (Memory). When the processor 3 receives the storage command sent by the external host 2, it also receives a logical block address (LBA...

AI Technical Summary

Problems solved by technology

[0004]However, traditional storage devices, such as hard disks, have limited read and write speeds due to their own hardware limitations, and there has been no breakthrough yet. Although there is a technology at present, a buffer zone is arranged between the transmission channels in the storage device, and the transmission speed of the transmission channel far exceeds the characteristics of the hard disk itself to improve the speed of data access, but this kind of buffer zone has The first-in-first-out (FIFO, First In First Out) feature is mainly used for temporary storage. When the data stored in it is read, it no longer exists in the buffer. Therefore, the data stored in the buffer The data cannot be reused, so the speed at which the storage device can be increased is very limited

[0005]Furthermore, storage devices composed of non-volatile memory (Non-volatility memory), such as flash drives and solid-state hard drives, etc., because of their structural characteristics , has the upper limit of its erasure times, although the above-mentioned buffer can slightly reduce its use times and erasure times, but because the data in the buffer area cannot be reused, the effect that can be achieved is also very limited, and there are still room for improvement

Images