Coded data generation or conversion – Digital code to digital code converters – To or from multi-level codes
Reexamination Certificate
2007-01-23
2007-01-23
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from multi-level codes
C341S057000
Reexamination Certificate
active
10907438
ABSTRACT:
The present invention abandons the conventional approach of incrementing bits-per-cell b by 1, but allows increments of states-per-cell N by as little as 1 between product generations. Because N is no longer an integral power of 2, b takes a fractional value, resulting in a fractional-bit system. In a fractional-bit system, cells are decoded in unit of word. By adjusting the word-width, the system efficiency can be optimized. Hybrid N-ary system can be used to improve manufacturing yield and endurance lifetime.
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Hu Chenming
Zhang Guobiao
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