MOVING SECTORS WITHIN A BLOCK IN A FLASH MEMORY

摘要

A device (700) is disclosed for storing mapping information for mapping a logical block address identifying a block being accessed by a host to a physical block address, identifying a free area of nonvolatile memory, the block being selectively erasable and having one or more sectors that may be individually moved. The mapping information including a virtual physical block address (702) for identifying an "original" location within the nonvolatile memory where a block is stored and a moved virtual physical block address (704) for identifying a "moved" location within the nonvolatile memory where one or more sectors of the stored block are moved. The mapping information further including status information (706,712) for use of the "original" physical block address and the "moved" physical block address and for providing information (714) regarding "moved" sectors within the block being accessed.