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US09047984B2 Asymmetric log-likelihood ratio for flash channel 有权
闪光通道的非对称对数似然比

Asymmetric log-likelihood ratio for flash channel
摘要:
Disclosed is a system and method for reading a flash memory cell with an adjusted read level. A current read level is set to a new read level associated with increasing a first error rate to decrease a second error rate. The first error rate is associated with determining that the most significant bit of the flash memory cell is a binary 1 and the second error rate is associated with determining that the most significant bit is a binary 0. On reading the memory cell, a probability value is generated for the most significant bit, the probability being higher if the bit is equivalent to a binary 0 than if the bit is equivalent to a binary 1.
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