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Avoiding errors in a flash memory by using substitution transformations
Avoiding errors in a flash memory by using substitution transformations
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机译:通过使用替换转换避免闪存中的错误
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摘要
To store an input string of M N-tuples of bits, a substitution transformation is selected in accordance with the input string and is applied to the input string to provide a transformed string of M N-tuples of bits. M or more memory cells are programmed to represent the transformed string and preferably also to represent a key of the transformation. Alternatively, the memory selectively programs each of M or more cells to a respective one of 2N states. A mapping that maps the binary numbers in [0,2N−1] into respective states is selected in accordance with the input string and is used to program M cells to represent the input string. Preferably, a key of the mapping is stored in the memory in association with the M cells.
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机译:为了存储M N元组的输入串,根据输入串选择替换变换并将其应用于输入串以提供M N元组的变换串。 M个或更多的存储器单元被编程为代表转换后的字符串,并且优选地还代表转换的键。或者,存储器将M个或更多单元中的每一个选择性地编程为2 N Sup>个状态中的一个。根据输入字符串选择将[0,2 N Sup> -1]中的二进制数映射到各个状态的映射,并用于对M个单元进行编程以表示输入字符串。优选地,映射的关键字与M个单元相关联地存储在存储器中。
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