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    • 1. 发明申请
    • FLEXIBLE WEAR MANAGEMENT FOR NON-VOLATILE MEMORY
    • 非易失性存储器的灵活磨损管理
    • US20140143474A1
    • 2014-05-22
    • US13682885
    • 2012-11-21
    • Prashant S. DamleRobert W. FaberNingde Xie
    • Prashant S. DamleRobert W. FaberNingde Xie
    • G06F12/02
    • G06F12/0246G06F2212/7211
    • Systems and methods of memory cell wear management that can achieve a more uniform distribution of write cycles across a memory cell address space. The systems and methods allow physical addresses of memory cells subjected to a high number of write cycles to be swapped with physical addresses of memory cells subjected to a lower number of write cycles. The physical address of a group of memory cells is a “hot address” if the write cycle count for that memory cell group exceeds a specified threshold. If the write cycle count for a group of memory cells does not exceed the specified threshold, then the physical address of that memory cell group is a “cold address”. The systems and methods allow the specified threshold of write cycle counts to be dynamically incremented to assure that cold addresses are available for swapping with hot addresses in the memory cell address space.
    • 可以实现跨存储器单元地址空间的写周期更均匀分布的存储器单元磨损管理的系统和方法。 这些系统和方法允许经受大量写入周期的存储器单元的物理地址与经受较少写入周期的存储器单元的物理地址交换。 如果该存储单元组的写周期计数超过指定的阈值,则一组存储单元的物理地址是“热地址”。 如果一组存储单元的写周期计数不超过指定的阈值,则该存储单元组的物理地址为“冷地址”。 系统和方法允许指定的写周期计数阈值动态增加,以确保冷地址可用于与存储单元地址空间中的热地址进行交换。