High sum-rate write-once memory
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United States of America Patent
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Mar 28, 2017
Grant Date -
Jul 21, 2016
app pub date -
Jan 18, 2016
filing date -
Jan 19, 2015
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Abstract
Provided are modified one-hot (MOH) constructions for WOM codes with low encoding and decoding complexity, that achieve high sum-rates. Features include maximizing writing of data information values for successive rewrites, all-zero and all-one cell state vectors that represent a unique data information value that can be written for many generations, a very high number of writes, and does not sacrifice capacity. One embodiment comprises ordered or unordered MOH code that approaches the upper-bound for large n wits. According to the embodiments, before an erasure is needed, the majority of the wits are encoded, which provides level wearing and maximizes life of cells.
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