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US 10,311,897 B1Granted
Multitrack data stored using perpendicular and longitudinal magnetic fields
AssigneeSeagate Technology LLC
InventorsWalter R. Eppler, Mehmet Fatih Erden, Stephanie Hernandez
Life of this patent
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Abstract
First and second tracks of a magnetic recording medium are read simultaneously via a first reader that provides a first signal based on detecting a total perpendicular field of the first and second tracks. The first and second tracks are read simultaneously via a second reader that provides a second signal based on detecting a total longitudinal field of the first and second tracks. Data is detected from the first and second signals.
Claims20
A method, comprising:
- reading a first and second track of a magnetic recording medium simultaneously via a first reader that provides a first signal based on detecting a total perpendicular field of the first and second tracks;
- reading the first and second tracks simultaneously via a second reader, the second reader providing a second signal based on detecting a total longitudinal field of the first and second tracks;
- and
- detecting data from the first and second signals.
1 more element
An apparatus comprising:
- interface circuitry coupled to first and second readers that simultaneously provide first and second signals while spanning first and second tracks of a magnetic recording medium, the first reader providing the first signal based on detecting a total perpendicular field of the first and second tracks, the second reader providing the second signal based on detecting a total longitudinal field of the first and second tracks;
- and
- a read channel coupled to the interface circuitry and configured to detect data from the first and second signals.
A system, comprising:
- a head-gimbal assembly comprising a first reader and a second reader offset in a downtrack direction, the first reader reading providing a first signal based on detecting a total perpendicular field of a first and second track of a magnetic recording medium, the second reader providing a second signal based on detecting a total longitudinal field of the first and second tracks;
- and
- a read channel operable to detect data from the first and second signals.
Dependencies are inferred from the claim text.