Recovery from cross-temperature read failures by programming neighbor word lines

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United States of America Patent

PATENT NO 9928126
SERIAL NO

15716684

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Abstract

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A memory system includes an interface and storage circuitry. The interface is configured to communicate with memory cells that store data. The storage circuitry is configured to program a data unit to a first group of the memory cells, to read the data unit from the first group using at least a read threshold to produce a first readout, and in response to detecting that reading the data unit has failed because the read threshold has fallen outside a supported range of read thresholds, due to a temperature difference between a time of programming the first group and a time of reading the first group, to program a second group of the memory cells. The circuitry is further configured to re-read the data unit from the first group using the at least read threshold to produce a second readout, and to recover the data unit from the second readout.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Neerman, Moshe Kiryat Ono, IL 17 217
Shapira, Ofer Tel Aviv, IL 22 764
Shappir, Assaf Ganey Tikva, IL 44 403

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