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US 2014/0237314 A1Published application
Systems and Methods for Skip Layer Data Decoding
AssigneeLSI Corporation
InventorsShaohua Yang, Fan Zhang, Chung-Li Wang, Shu Li
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 performing data decoding including skipping one or more codeword blocks in the data decoding process.
Claims20
A data processing system, the data processing system comprising:
- a data decoder circuit operable to apply a data decode algorithm to a decoder input to yield a decoded output, wherein the decoder input includes at least a first portion and a second portion;
- and
- a skip control circuit operable to:
- determine a first status of the decoded output corresponding to the first portion and a second status of the decoded output corresponding to the second portion;
- and
- modify re-application of the data decode algorithm to the first portion by the data decoder circuit based at least in part on the first status.
3 more elements
A data processing method, the data processing method comprising:
- receiving a codeword;
- applying a data detection algorithm to the codeword to yield a detected output;
- applying a data decode algorithm by a data decoder circuit to a first portion of a decoder input to yield a first decoded output, wherein the decoder input is derived from the detected output;
- applying the data decode algorithm to a second portion of the decoder input to yield a second decoded output;
- generating a first status corresponding to the first decoded output;
- generating a second status corresponding to the second decoded output;
- based at least in part on the first status, modifying re-application of the data decode algorithm to the first portion by the data decoder circuit;
- and
- re-applying the data decode algorithm to the second portion of the decoder input using at least one message generated by applying the data decode algorithm by the data decoder circuit to the first portion of a decoder input.
6 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 a data set on the storage;
- a read channel circuit including:
- an analog front end circuit operable to provide an analog signal corresponding to the sensed signal;
- an analog to digital converter circuit operable to sample the analog signal to yield a series of digital samples;
- an equalizer circuit operable to equalize the digital samples to yield a sample set;
- a data decoder circuit operable to apply a data decode algorithm to a decoder input to yield a decoded output, wherein the decoder input is derived from the sample set and includes at least a first portion and a second portion;
- and
- a skip control circuit operable to:
- determine a first status of the decoded output corresponding to the first portion and a second status of the decoded output corresponding to the second portion;
- and
- modify re-application of the data decode algorithm to the first portion by the data decoder circuit based at least in part on the first status.
9 more elements
Dependencies are inferred from the claim text.