Burst writing for clearance calibration in a heat assisted magnetic data recording system
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United States of America Patent
Stats
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Jan 30, 2018
Issued Date -
N/A
app pub date -
Dec 30, 2016
filing date -
Dec 30, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for magnetic data recording that calibrates for magnetic thermal protrusion of elements of a magnetic data recording system. The method involves performing a series of burst mode magnetic data writings using a magnetic recording head that includes a write element, a thermal fly height control element and a near field transducer. The burst mode writings are performed at various levels of thermal fly height control power. This can be use to determine the relationship between signal amplitude and thermal fly height control power with thermal protrusion being affected only by the thermal fly height control element and not from thermal heating of the near field transducer or write element. Then, thermal fly height control can be adjusted to achieve the desired signal amplitude for recording with the near field transducer and write element operating at a thermal steady state.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- G11B Class
- 1958 Applications Filed
- 1595 Patents Issued To-Date
- 81.47 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- G11B Class
- 29.18 % this patent is cited more than
- 7 Age
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