Disk drive sensor selection
AssigneeSeagate Technology LLC
InventorsJon Trantham, Puskal Pokharel
Life of this patent
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Abstract
Implementations described and claimed herein includes a method comprising selecting a zone of one or more tracks on a disk drive having a plurality of magnetic sensors on a transducer head, determining a performance matrix related to the selected track zone, and selecting a first subset and a second subset of the plurality of magnetic sensors based on the determined performance matrix, wherein only the first subset of the plurality of magnetic sensors are used for data recovery in the selected track zone, and the second subset of the plurality of magnetic sensors are used for servo recovery.
Claims18
A method comprising:
- selecting a zone of one or more tracks on a disk drive having a plurality of magnetic sensors on a transducer head;
- determining a performance matrix related to the selected zone;
- and
- selecting a first subset and a second subset of the plurality of magnetic sensors based on the determined performance matrix so that only the first subset is used for data recovery in the selected zone and the second subset is used for servo recovery in the selected zone.
A system comprising:
- a transducer head having two or more sensors;
- a sensor selection module configured to select a first subset of the sensors to read data, the first subset sensors includes less than all of the sensors;
- and
- a servo gate signal to select a sensor selection register.
One or more non-transitory computer-readable storage media encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
- selecting a data track zone on a disk drive having a plurality of magnetic sensors on a transducer head;
- determining a performance metric related to the selected track zone;
- selecting a first subset of the plurality of magnetic sensors based on the determined performance metric, the first subset of the plurality of magnetic sensors including less than all of the plurality of sensors, only the first subset of the plurality of sensors are used for data recovery or reading in the selected track zone and selecting a second subset of the plurality of magnetic sensors to read signals for servo modulation based on the determined performance metric.
Dependencies are inferred from the claim text.