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US 8,947,806 B1Granted
Cross-talk compensation in array based reader systems
AssigneeLSI Corporation
InventorsTravis Roger Oenning, George Mathew
Life of this patent
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Abstract
A method of enhancing read performance in array-reader hardware includes generating, by the array-reader hardware, a plurality of signals, according to data read from a magnetic disk, and canceling at least a portion of cross-talk in the plurality of signals to generate a plurality of corrected signals.
Claims19
A method of enhancing read performance in array-reader hardware comprising:
- generating, by the array-reader hardware, a plurality of signals, according to data read from a magnetic disk;
- and
- canceling at least a portion of cross-talk in the plurality of signals to generate a plurality of corrected signals;
- wherein canceling at least the portion of the cross-talk comprises:
- applying a cross-talk cancelation filter to the plurality of signals, subtracting a first portion of the cross-talk from the plurality signals;
- and
- applying a digital finite impulse response filter to each of the plurality of signals, canceling a second portion of the cross-talk.
4 more elements
A storage system comprising:
- an array-reader configured to generate a plurality of signals;
- a digital cross-talk cancelation filter configured to subtract a first portion of cross-talk from the plurality signals and to generate a plurality of corrected signals;
- and
- a plurality of digital finite impulse response filters configured to cancel a second portion of cross-talk from respective ones of the plurality of signals to generate the plurality of corrected signals.
1 more element
A storage system comprising:
- an array-reader configured to generate a plurality of signals;
- and
- an equalizer comprising a plurality of digital finite impulse response filters configured to subtract cross-talk from respective ones of the plurality of signals and to generate a plurality of corrected signals;
- wherein the plurality of digital finite impulse response filters is configured to adjust a delay of at least one of the plurality of signals according to a down-track separation between a plurality of read heads of the array-reader.
1 more element
A data storage system, comprising:
- a plurality of storage devices, wherein at least one of the plurality of storage devices comprises:
- an array-reader configured to generate a plurality of signals;
- and
- at least one of a digital cross-talk cancelation filter and a plurality of digital finite impulse response filters,
- wherein the digital cross-talk cancelation filter is configured to subtract cross-talk from the plurality of signals and to generate a plurality of corrected signals, and the plurality of digital finite impulse response filters are configured to subtract the cross-talk from respective ones of the plurality of signals and to generate the plurality of corrected signals.
2 more elements
Dependencies are inferred from the claim text.