Methods and apparatus for error recovery in memory systems employing iterative codes

摘要

Systems and methods for error recovery are presented. Data is decoded with an iterative decoding scheme having a first set of parameters. In response to a determination that the iterative decoding scheme has failed, the data is re-read. While the data is being re-read, the iterative decoding scheme is reconfigured with a second set of parameters, and the data is decoded with the reconfigured iterative decoding scheme. In response to determination that the reconfigured iterative decoding scheme has failed, an error type associated with the data is determined. An error recovery scheme is selected from a plurality of error recovery schemes for the data based on the determined error type.

主权项

1. A method for correcting errors, the method comprising:
decoding data with an iterative decoding scheme having a first set of parameters; in response to determining that the iterative decoding scheme has failed, re-reading the data; while the data is being re-read, reconfiguring the iterative decoding scheme with a second set of parameters and decoding the data with the reconfigured iterative decoding scheme; in response to determining that the reconfigured iterative decoding scheme has failed: determining an error type associated with the data; and selecting at least one error recovery scheme of a plurality of error recovery schemes for the data based on the determined error type.