Patent ID: 6757806
Filing Date: 2004-06-29
Classification: G06F,Y02D

Abstract:
A method for converting an address in a semiconductor memory device having an address converting table for converting logical addresses into physical addresses, comprising:a write operation step for converting inputted logical addresses into physical addresses in the address converting table, sequentially storing data in the converted physical addresses from an upper address, and storing the logical addresses and the physical addresses in the table to be equalized; an invalid data erasing step for receiving a logical address of invalid data, and erasing the logical address from the address converting table; a read operation step for converting inputted logical addresses into the physical addresses stored in a write operation in the address converting table, and reading data; a logical address re-allocation step for re-allocating the logical addresses to obtain memory space in software using a memory, loading a re-allocated address map to the address converting table after re-allocating the logical addresses, and renewing the table; a power control step for discriminating between a using or non-using state of the memory blocks according to the physical address information from the address converting table, and for applying or intercepting power according to the discrimination result to reduce power consumption.