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US 9,773,517 B2Granted
Dual writer head design
AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Edward Gage, Huaqing Yin, Yonghua Chen
Life of this patent
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Abstract
A storage device includes a transducer head with multiple write elements having write poles of different sizes. For example, the transducer head may include two write poles of different width configured to write to a same surface of a storage medium. A controller of the storage device is configured to selectively engage one of the multiple write elements to write data to the storage medium.
Claims17
A storage device comprising:
- a transducer head including:
- two write elements with different write pole widths configured to write to a same surface of a storage medium, the two write elements each including a write coil;
- and
- a common electrical ground that is electrically coupled to the write coil of each one of the two write elements;
- and
- a controller configured to operate a first of the two write elements to write data at a first linear density and configured to operate a second of the two write elements to write data at a second different linear density.
3 more elements
A method comprising:
- selecting one of two write elements on a transducer head to write data to a magnetic media, the two write elements having different write pole widths and each including a corresponding write coil attached to a common electrical ground;
- and
- writing data at a first linear density with a first of the two write elements and writing data at a second different linear density with a second one the two write elements.
A storage device comprising:
- a transducer head with two write elements having different write pole widths and each including a corresponding write coil attached to a common electrical ground;
- and
- a controller to selectively engage one of the two write elements to record data of a write operation and to operate a first of the two write elements to write data at a first linear density and configured to operate a second of the two write elements to write data at a second different linear density.
Dependencies are inferred from the claim text.