Determination of optimum threshold voltage to read data values in memory cells

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United States of America Patent

PATENT NO 9135109
APP PUB NO 20140258796A1
SERIAL NO

13794716

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An adaptive search scheme leads to threshold voltages that have lower bit error rates over initial values. An initial reference voltage is used and data is measured for set steps in voltage about the initial value sufficient to fit a polynomial curve. A minimum is used to determine the lowest bit error rate and corresponding optimum threshold voltage. This voltage is adopted as the new threshold voltage for reading the given data.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Emo, Bruce Douglas Longmont, US 4 57
Ghaly, Mai A Bloomington, US 10 139

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