Method for storing data and storage device

Abstract

The embodiment of the invention discloses a method for storing data and a storage device. The method comprises the following steps of acquiring data and error correcting codes of the data; and respectively storing the data and the error correcting codes of the data in different pages of a flash memory through a data channel which is connected with the flash memory. Based on the technical scheme, because the error correcting codes of the data are stored in independent pages, i.e. the pages of a storage space are divided into two types, one type of the pages is used for storing the data, and the other type of the pages is used for storing the error correcting codes of the data, the data and all error correcting codes of the data can be obtained through less reading times, thereby acquiring correct data, reducing the error possibility of the storage device and enabling the storage device to be safe and stable in the process of data storage.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a data storage method and a storage device. Background technique [0002] Storage devices play a very important role in people's lives today. People use them to store text materials, pictures, videos, etc. A commonly used storage device such as a solid state disk (SSD, Solid State Disk) plays an important role in people's daily life because of its large storage capacity, small size, and portability. An SSD may be composed of flash memory (Flash), such as NAND Flash. Due to the NAND Flash manufacturing process, random bit (bit) flips may occur during data reading, writing and storage, resulting in data errors. With the continuous improvement of the Flash manufacturing process, more data is stored in a unit storage space, and the probability of errors in the stored data is greater. [0003] Error Checking and Correcting (ECC, Error Checking and Correcting,) technology can pe...

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Problems solved by technology

[0007] During the research and practice of the prior art, the inventors of the present invention have found that for one sector in the prior art, a 13-bit error correction code is usually required for correcting 1 bit (bit) data, that is, 13-bit error correction codes are required. Check bit, therefore, the check bit of 12B space in a sector can correct up to 8 bits of erroneous data. When more bits of data are to be corrected, the error correction code needs to be stored in more Sector check bits. A page includes multiple Sectors, where a page is the smallest unit for writing and reading data in a storage device. Therefore, when the storage device reads data, it cannot obtain the error correction code corresponding to the data in time, so that the storage device Insufficient security and stability when storing data

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