JP2013143177A5 - - Google Patents

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Publication number
JP2013143177A5
JP2013143177A5 JP2012222335A JP2012222335A JP2013143177A5 JP 2013143177 A5 JP2013143177 A5 JP 2013143177A5 JP 2012222335 A JP2012222335 A JP 2012222335A JP 2012222335 A JP2012222335 A JP 2012222335A JP 2013143177 A5 JP2013143177 A5 JP 2013143177A5
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JP
Japan
Prior art keywords
laser
signal
magnetic
operable
data signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2012222335A
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English (en)
Japanese (ja)
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JP2013143177A (ja
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Publication date
Priority claimed from US13/346,102 external-priority patent/US8315128B1/en
Application filed filed Critical
Publication of JP2013143177A publication Critical patent/JP2013143177A/ja
Publication of JP2013143177A5 publication Critical patent/JP2013143177A5/ja
Withdrawn legal-status Critical Current

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JP2012222335A 2012-01-09 2012-10-04 熱アシスト磁気記録システム Withdrawn JP2013143177A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/346,102 2012-01-09
US13/346,102 US8315128B1 (en) 2012-01-09 2012-01-09 Heat assisted magnetic recording system

Publications (2)

Publication Number Publication Date
JP2013143177A JP2013143177A (ja) 2013-07-22
JP2013143177A5 true JP2013143177A5 (enExample) 2015-11-05

Family

ID=47044841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012222335A Withdrawn JP2013143177A (ja) 2012-01-09 2012-10-04 熱アシスト磁気記録システム

Country Status (6)

Country Link
US (1) US8315128B1 (enExample)
EP (1) EP2613317B1 (enExample)
JP (1) JP2013143177A (enExample)
KR (1) KR20130081632A (enExample)
CN (1) CN103198839B (enExample)
TW (1) TWI536372B (enExample)

Families Citing this family (27)

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US8565047B2 (en) * 2011-04-28 2013-10-22 Lsi Corporation Systems and methods for data write loopback based timing control
US9318142B2 (en) 2012-04-25 2016-04-19 Seagate Technology Llc Laser modulation for magnetic recording apparatus
US8891341B1 (en) 2013-03-11 2014-11-18 Western Digital Technologies, Inc. Energy assisted magnetic recording disk drive using modulated laser light
US9202499B2 (en) 2013-03-13 2015-12-01 Seagate Technology Llc Contact detection using laser modulation
US8754678B1 (en) * 2013-03-15 2014-06-17 Analog Devices, Inc. Apparatus and methods for invertible sine-shaping for phase interpolation
US9123355B1 (en) 2013-09-16 2015-09-01 Seagate Technology Llc HAMR channel to preamp interface
WO2015066216A1 (en) * 2013-10-29 2015-05-07 Optical Archive Inc. Array reader and array reading of optical media
US8929013B1 (en) * 2013-11-08 2015-01-06 Lsi Corporation Storage system with pattern dependent write
US9025420B1 (en) * 2013-11-15 2015-05-05 HGST Netherlands B.V. Self-controlled laser pulsing for thermally assisted recording
US9064525B2 (en) 2013-11-26 2015-06-23 Western Digital Technologies, Inc. Disk drive comprising laser transmission line optimized for heat assisted magnetic recording
US9761268B1 (en) * 2013-12-02 2017-09-12 Seagate Technology Llc Precompensation based on nearby data
US9070377B1 (en) 2013-12-12 2015-06-30 Seagate Technology Llc Cooling periods used during the writing of bit boundaries to a magnetic recording media
JP2015149110A (ja) 2014-02-06 2015-08-20 株式会社東芝 磁気ディスク装置、及び制御方法
US9311943B2 (en) 2014-02-17 2016-04-12 HGST Netherlands B.V. Compensation of laser diode introduced flying height changes
US9318153B2 (en) * 2014-03-31 2016-04-19 Seagate Technology Llc HAMR drive fault detection system
US9070397B1 (en) 2014-05-08 2015-06-30 HGST Netherlands B.V. Write current and media heater control for heat or microwave assisted magnetic recording
US9530447B2 (en) * 2015-02-27 2016-12-27 Seagate Technology Llc Adaptive HAMR power data storage device
US9754610B2 (en) 2015-12-21 2017-09-05 Avago Technologies General Ip (Singapore) Pte. Ltd. Magnetic recording system with ternary pattern dependent write signaling
US9715887B2 (en) 2015-12-28 2017-07-25 Avago Technologies General Ip (Singapore) Pte. Ltd. Magnetic recording system using pattern dependent writer having register pages for storing write currents
US9721588B2 (en) 2015-12-28 2017-08-01 Avago Technologies General Ip (Singapore) Pte. Ltd. Magnetic recording system including differentiated write current emphasis signal generator circuit
US9779763B1 (en) 2016-04-29 2017-10-03 Seagate Technology Llc Write signal adjustment
US9620163B1 (en) 2016-05-16 2017-04-11 Seagate Technology Llc Measuring transition shifts due to laser power variation in a heat-assisted magnetic recording device
US10734016B2 (en) * 2018-08-21 2020-08-04 Marvell Asia Pte, Ltd. Pulse-based writing for magnetic storage media
EP3874496A1 (en) * 2018-10-30 2021-09-08 Marvell Asia Pte., Ltd. Thermal compensation for laser in heat assisted magnetic recording
WO2021140998A1 (ja) * 2020-01-10 2021-07-15 ローム株式会社 半導体装置、および半導体装置システム
US11037597B1 (en) 2020-06-29 2021-06-15 Seagate Technology Llc Heat-assisted magnetic recording apparatus that modulates laser power to reduce differences between track widths of recorded marks
CN117613654B (zh) * 2023-11-23 2025-01-10 山东大学 一种基于fpga的可编程高稳定激光脉冲控制系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002221098A1 (en) * 2000-12-11 2002-06-24 Sanyo Electric Co., Ltd. Disk reproduction device
JP4102289B2 (ja) * 2003-11-07 2008-06-18 株式会社日立製作所 情報記録方法、情報記録装置及び評価装置
CN100356694C (zh) * 2004-01-06 2007-12-19 瑞昱半导体股份有限公司 相位差检测器及其方法
US7515372B2 (en) * 2006-04-03 2009-04-07 Seagate Technology Llc Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording
US7852587B2 (en) * 2008-09-11 2010-12-14 Hitachi Global Storage Technologies Netherlands B.V. Thermal assisted recording (TAR) disk drive capable of controlling the write pulses
JP5716268B2 (ja) * 2009-09-29 2015-05-13 ソニー株式会社 ハードディスク装置およびその駆動方法

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