Fast copy through controller

A method and apparatus for a CTC data copy operation, in that modification, and subsequent encoding only affects a small portion of metadata associated with copied data. By modifying and re-encoding only this small portion of metadata, a small portion of the parity data for the copied data requires...

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Bibliographic Details
Main Authors Zamir, Ran, Avraham, Dudy David
Format Patent
LanguageEnglish
Published 16.11.2021
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A method and apparatus for a CTC data copy operation, in that modification, and subsequent encoding only affects a small portion of metadata associated with copied data. By modifying and re-encoding only this small portion of metadata, a small portion of the parity data for the copied data requires updating. In embodiments where there are no errors in the read data to be copied (e.g., from an SLC portion of a NAND), decoding, modification, and encoding, may be done in parallel. Because such a small number of metadata bits are modified, in some embodiments, all possible codewords for the parity bits may be predetermined and combined (e.g., by XOR) to update the metadata parity bits.
Bibliography:Application Number: US202016910905