Schmeiser, Olsen & Watts
Method for recycling flash memory
A method for recycling a flash memory includes rearranging the capacity of cells, centralizing bad sectors at a cell, labeling the cell as a useless cell, examining the bad sectors in each cell of the flash memory to determine whether or not the number of bad sectors in each cell exceeds an allowable upper limit. If the number of bad sectors exceeds the allowable upper limit, the cells of the flash memory will be rearranged, and the area with densely distributed bad sectors is marked as a new cell, and such cell is deleted. In the process of the recycling method, the number repeated uses of the flash memory exceeding the maximum number of bad sectors can be arranged to extend the life expectancy of the flash memory, so that the flash memory device originally incapable of writing and reading data can be used again.
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Chunchun
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