Determining data retention time in a solid-state non-volatile memory

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United States of America Patent

PATENT NO 9263158
APP PUB NO 20150052416A1
SERIAL NO

13969049

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Abstract

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Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, a test pattern is written to a selected block of solid-state non-volatile memory cells. The test pattern is read from the selected block and a total number of read errors is identified. A data retention time is determined in response to the total number of read errors and an elapsed time interval between the writing of the test pattern and the reading of the test pattern. Data in a second block of the solid-state non-volatile memory cells are thereafter refreshed in relation to the determined data retention time.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnston, Darren E Burnsville, US 2 155
Prohofsky, Thomas R Edina, US 15 168

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