SYSTEM AND METHODS FOR INCREASING USEFUL LIFETIME OF FLASH MEMORY DEVICE

A system for improving utilization of a nonvolatile flash memory device which has pages whose guaranteed per-cycle erase time and guaranteed number of cycles are known, the system comprising erase time determination functionality for individual pages; de-facto total erase-time accumulation functionality incrementing, for each erase cycle to which an individual page is subjected, by the individual page's de facto erase time per cycle as provided by the erase time measurement functionality; and flash memory page usage monitoring functionality operative to control usage of pages in flash memory including selecting at least one individual flash memory page depending on a comparison between the individual flash memory page's de facto total erase time and a guaranteed erase time computed as a product of the guaranteed per-cycle erase time and of the guaranteed number of cycles. 本发明提供了种用于改善非挥发性闪存装置的利用率的系统及方法，适用于非挥发性闪存，其具有多个页，该多个页的保证每循环擦除时间及保证循环数目为已知的，系统包含用以多个个别页的擦除时间决定功能单元；通过以擦除时间测量功能单元所提供的个别页的每循环实际擦除时间来针对该个别页所经受的各擦