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    • 8. 发明授权
    • Methods and apparatus for soft data generation for memory devices
    • 用于存储器件的软数据生成的方法和装置
    • US08830748B2
    • 2014-09-09
    • US13063888
    • 2009-09-30
    • Erich F. HaratschMilos IvkovicVictor KrachkovskyNenad MiladinovicAndrei VityaevClifton WilliamsonJohnson Yen
    • Erich F. HaratschMilos IvkovicVictor KrachkovskyNenad MiladinovicAndrei VityaevClifton WilliamsonJohnson Yen
    • G11C16/06
    • G11C16/26G06F11/1012G06F11/1068G06F12/0246G06F2212/1032G06F2212/2022G11C7/02G11C7/04G11C11/16G11C11/5642G11C16/0483G11C16/3418G11C2211/5634
    • Methods and apparatus are provided for soft data generation for memory devices. At least one soft data value is generated for a memory device, by obtaining at least one hard read value; and generating the soft data value associated with the at least one hard read value based on statistics for reading the hard read value. The hard read value may be one or more of data bits, voltage levels, current levels and resistance levels. The generated soft data value may be one or more of (i) a soft read value that is used to generate one or more log likelihood ratios, and (ii) one or more log likelihood ratios. The statistics comprise one or more of bit-based statistics and cell-based statistics. The statistics may also optionally comprise pattern-dependent disturbance of at least one aggressor cell on the target cell, as well as location-specific statistics. At least one soft data value can be generated for a memory device, by obtaining a soft read value; and generating the soft data value associated with the soft read value based on statistics for reading the soft read value, wherein the statistics comprise one or more of location-specific statistics and pattern-dependent statistics.
    • 提供了用于存储器件的软数据生成的方法和装置。 通过获得至少一个硬读取值,为存储器件生成至少一个软数据值; 以及基于用于读取硬读取值的统计量来生成与所述至少一个硬读取值相关联的软数据值。 硬读取值可以是数据位,电压电平,电流电平和电阻电平中的一个或多个。 所产生的软数据值可以是(i)用于产生一个或多个对数似然比的软读取值的一个或多个,以及(ii)一个或多个对数似然比。 统计信息包括基于位的统计信息和基于单元的统计信息中的一个或多个。 统计还可以任选地包括目标小区上的至少一个攻击者小区的模式相关干扰,以及位置特定统计。 可以通过获得软读取值来为存储器件生成至少一个软数据值; 以及基于用于读取所述软读取值的统计信息来生成与所述软读取值相关联的软数据值,其中所述统计信息包括位置特定统计信息和模式相关统计信息中的一个或多个。