Systems and methods for retrieving data

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9405639
APP PUB NO 20150121128A1
SERIAL NO

14588869

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Apparatus and methods, such as those that read data from non-volatile integrated circuit memory devices, such as NAND flash. For example, disclosed techniques can be embodied in a device driver of an operating system. Errors are tracked during read operations. If sufficient errors are observed during read operations, the block is then retired when it is requested to be erased or a page of the block is to be written. One embodiment is a technique to recover data from uncorrectable errors. For example, a read mode can be changed to a more reliable read mode to attempt to recover data. One embodiment further returns data from the memory device regardless of whether the data was correctable by decoding of error correction code data or not.

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Patent Owner(s)

Patent OwnerAddress
U S BANK NATIONAL ASSOCIATION AS COLLATERAL AGENT100 WALL STREET SUITE 1600 NEW YORK NY 10005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Tieniu San Jose, US 7 344

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