Transducer head with multiple read sensors
AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Olle Heinonen, Yonghua Chen
Life of this patent
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Abstract
In order to improve a consistent data track during writing to a storage medium, a plurality of read sensors are affixed to a transducer head. In one implementation, the transducer head includes multiple read sensors placed up-track of the write pole. In another implementation, the transducer head includes at least one read sensor placed up-track of the write pole and at least one read sensor placed down-track of the write pole. Each position of the multiple read sensors relative to the write pole may be unique. One or more read signals of selected read sensors are used to determine the read location and therefore the write pole location relative to the storage medium.
Claims20
A method comprising:
- detecting read signals from a data track of a storage medium by a plurality of read sensors positioned in a cross-track alignment with respect to the data track and selecting read signals from less than all of the plurality of read sensors to generate a position signal.
A system comprising:
- a transducer head;
- and
- a plurality of read sensors affixed to the transducer head, wherein the system is configured to monitor read signals from the plurality of read sensors and select read signals from less than all of the plurality of read sensors to generate a position signal and to combine at least two of the selected read signals during a readback operation to enhance the signal-to-noise ratio of read data detected by a transducer head during the readback operation.
A system comprising:
- a storage medium including a plurality of concentric data tracks between an inner diameter and an outer diameter of the storage medium;
- a transducer head;
- a plurality of read sensors affixed to the transducer head and positioned in a cross-track alignment with respect to a data track;
- and
- a write pole affixed to the transducer head and uniquely positioned relative to each of the read sensors, wherein at least one of the plurality of read sensors is aligned with a same data track as the write pole regardless of an alignment of the transducer head with the data track when the transducer head is positioned between the inner diameter and the outer diameter of the storage medium.
Dependencies are inferred from the claim text.