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US 8,751,915 B2Granted
Systems and methods for selectable positive feedback data processing
AssigneeLSI Corporation
InventorFan Zhang
Life of this patent
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Abstract
The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for selectable positive feedback data processing.
Claims20
A data processing system, the data processing system comprising:
- a data processing circuit operable to re-apply a data processing algorithm to a data set using a processing feedback;
- a data quality determination circuit operable to indicate a quality of the data set;
- and
- an output selector circuit operable to select between a positive feedback and a neutral feedback based at least in part on the quality to yield the processing feedback.
1 more element
A method for data processing, the method comprising:
- applying a data decode algorithm by a data decoder circuit to a decoder input derived from a data set guided by an interim decoded output to yield a positive feedback;
- calculating a quality metric for the data set;
- subtracting the interim decoded output from the positive feedback to yield a neutral feedback;
- selecting one of the positive feedback and the neutral feedback as an updated decoded output based at least in part on the quality metric;
- and
- re-applying the data decode algorithm to using the updated decoded output.
3 more elements
A storage device, the storage device comprising:
- a storage medium;
- a head assembly disposed in relation to the storage medium and operable to provide a sensed signal corresponding to information on the storage medium;
- a read channel circuit including:
- an analog to digital converter circuit operable to sample an analog signal derived from the sensed signal to yield a series of digital samples;
- an equalizer circuit operable to equalize the digital samples to yield a data set;
- a data processing circuit operable to re-apply a data processing algorithm to the data set using a processing feedback;
- a data quality determination circuit operable to indicate a quality corresponding to the data set;
- and
- an output selector circuit operable to select between a positive feedback and a neutral feedback based at least in part on the quality.
6 more elements
Dependencies are inferred from the claim text.