Static information storage and retrieval – Floating gate – Multiple values
Reexamination Certificate
2010-01-15
2010-12-07
Nguyen, Tan T. (Department: 2827)
Static information storage and retrieval
Floating gate
Multiple values
C365S185090, C365S201000
Reexamination Certificate
active
07848143
ABSTRACT:
A memory controller controls a semiconductor storage device including nonvolatile memory cells. The controller includes a generating circuit, and a selection circuit. The generating circuit generates first data based on a second data. The selection circuit retains a cumulative value whose each digit is a cumulative result in each bit of data which is already written in the memory cells. The selection circuit selects one of the first data. A selected first data has a better average of digits in a sum of each bit of the selected first data and each digit of the cumulative value than an unselected first data. The selection circuit retains the sum concerning the selected first data as the new cumulative value.
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Kanno Shin-ichi
Kuroda Yosuke
Shirakihara Toshio
Kabushiki Kaisha Toshiba
Nguyen Tan T.
Ohlandt Greeley Ruggiero & Perle L.L.P.
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