Data recovery using a multi-reader head
AssigneeSeagate Technology LLC
InventorJason Charles Jury
Life of this patent
Estimating the term…
Abstract
In a method, read signals from each of a plurality of read transducers of a data head are buffered for each of a plurality of cross-track positions of the head relative to a data track. The buffered read signals are processed to establish a quality metric for each of the read signals and at least one combination read signal comprising at least two of the read signals. A data recovery cross-track position and a reader configuration comprising one or more of the read transducers are identified based on the quality metrics. A data read operation is then performed with the data head in the data recovery cross-track position using the read signals from the identified reader configuration.
Claims20
A method comprising:
- buffering read signals from each of a plurality of read transducers of a head in memory for each of a plurality of cross-track positions of the head relative to a data track;
- processing the buffered read signals to establish a quality metric for each of the read signals and at least one combination read signal comprising at least two of the read signals;
- identifying a data recovery cross-track position and a reader configuration comprising one or more of the read transducers, based on the quality metrics;
- and
- performing a read operation with the head in the data recovery cross-track position using the read signals of the identified reader configuration.
A method comprising steps of:
- adjusting a cross-track position of a head relative to a data track;
- buffering read signals from each of a plurality of read transducers supported by the head;
- and
- processing the buffered read signals to establish a quality metric for each read signal and at least one combination read signal comprising at least two of the read signals;
- repeating the adjusting, buffering and processing steps a limited number of times;
- identifying a data recovery cross-track position and a reader configuration comprising one or more of the read transducers, based on the quality metrics;
- performing a read operation with the head in the data recovery cross-track position using the read signals of the identified reader configuration.
A device comprising:
- a recording medium comprising a plurality of data tracks;
- a head comprising a plurality of read transducers;
- and
- processing circuitry configured to:
- buffer a read signal from each of the read transducers for each of a plurality of cross-track positions of the head relative to a selected data track;
- process the buffered read signals to establish a quality metric for each of the read signals and at least one combination read signal comprising at least two of the read signals;
- identify a data recovery cross-track position and a reader configuration comprising one or more of the read transducers, based on the quality metrics;
- perform a read operation with the head in the data recovery cross-track position using the read signals of the identified reader configuration.
Dependencies are inferred from the claim text.