Invention Grant
US08743667B1 Method for controlling writing in a thermally-assisted recording (TAR) disk drive with thermal fly-height control
有权
一种用于在具有热飞行高度控制的热辅助记录(TAR)磁盘驱动器中控制写入的方法
- Patent Title: Method for controlling writing in a thermally-assisted recording (TAR) disk drive with thermal fly-height control
- Patent Title (中): 一种用于在具有热飞行高度控制的热辅助记录(TAR)磁盘驱动器中控制写入的方法
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Application No.: US13777778Application Date: 2013-02-26
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Publication No.: US08743667B1Publication Date: 2014-06-03
- Inventor: Richard Michael Brockie , Gregory John Parker , Hans Juergen Richter , Erhard Schreck , Barry Cushing Stipe
- Applicant: HGST Netherlands B.V.
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent Thomas R. Berthold
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
A thermally-assisted recording (TAR) disk drive operates by turning on write current prior to the application of heat to the recording layer by the near-field transducer (NFT). In a TAR disk drive that uses thermal fly-height control (TFC), TFC power is at a first power level that keeps the write pole at a predetermined fly-height. The write current is then turned on, either simultaneously with or after a reduction in TFC power. The write pole then reaches its optimal fly-height as a result of the combination of write pole protrusion caused by the write current and retraction of the write pole caused by the reduction in TFC power. After the write pole has reached its optimal fly-height, heat is applied to the recording layer by the NFT. The combination of write current and heat causes writing to occur at the optimal write pole fly-height.
Information query
IPC分类: