METHOD AND DEVICE FOR N TIMES WRITEABLE MEMORY DEVICES

摘要

This invention provides a method, comprising receiving an access from a host at a memory device comprising a primary data allocation table associating physical memory blocks of said memory device with logical data units occupying said physical memory blocks, if said access is a read access requesting one or more logical data units from said memory device, providing said requested one or more logical data units from said associated physical memory blocks to said host, if said access is a write access requesting to write one or more logical data units to said memory device, determining if said write access is a pre-determined write access, responsive to said access being a pre-determined write access, writing said one or more logical data units to un-occupied physical memory blocks indicated by a supplementary data allocation table indicating un-occupied physical memory blocks of said memory device, and updating said primary and said supplementary data allocation table accordingly, and responsive to said access not being a pre-determined write access, denying said write access of said host. The invention also provides a device for operating the method.