NAND FLASH MEMORY CONTROLLER USING COMPRESSION RATE AND NAND FLASH MEMORY STORING METHOD USING THE SAME

摘要

The present invention relates to a NAND flash memory controller using a compression ratio and a method for storing NAND flash memory using the same. According to the present invention, there is provided a method of storing a NAND flash memory using a NAND flash memory controller, the method comprising: calculating a compression ratio of input original data; calculating a coding rate of the original data using the calculated compression ratio and a predetermined plurality of threshold ranges Calculating an error correcting code according to the coding rate, generating an error correcting code according to the determined number of bits, compressing the original data according to the calculated compression ratio, And combining the generated error correction code with the compressed data and storing the combined data in the NAND flash memory. As described above, according to the present invention, the number of bits that can be allocated to the error correction code is increased through the data lossless compression technique, thereby improving the stability and error correction capability of data stored in the NAND flash memory.