TWI536372B - 用於熱輔助的磁性記錄設備及方法與儲存系統 - Google Patents
用於熱輔助的磁性記錄設備及方法與儲存系統 Download PDFInfo
- Publication number
- TWI536372B TWI536372B TW101141846A TW101141846A TWI536372B TW I536372 B TWI536372 B TW I536372B TW 101141846 A TW101141846 A TW 101141846A TW 101141846 A TW101141846 A TW 101141846A TW I536372 B TWI536372 B TW I536372B
- Authority
- TW
- Taiwan
- Prior art keywords
- laser
- magnetic
- signal
- pulse
- data signal
- Prior art date
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 165
- 238000000034 method Methods 0.000 title claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 12
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- 230000006870 function Effects 0.000 description 11
- 230000001934 delay Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000880493 Leptailurus serval Species 0.000 description 2
- ILVGMCVCQBJPSH-WDSKDSINSA-N Ser-Val Chemical compound CC(C)[C@@H](C(O)=O)NC(=O)[C@@H](N)CO ILVGMCVCQBJPSH-WDSKDSINSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 239000013078 crystal Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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- 238000013019 agitation Methods 0.000 description 1
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- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/346,102 US8315128B1 (en) | 2012-01-09 | 2012-01-09 | Heat assisted magnetic recording system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201344681A TW201344681A (zh) | 2013-11-01 |
| TWI536372B true TWI536372B (zh) | 2016-06-01 |
Family
ID=47044841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101141846A TWI536372B (zh) | 2012-01-09 | 2012-11-09 | 用於熱輔助的磁性記錄設備及方法與儲存系統 |
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| 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 |
-
2012
- 2012-01-09 US US13/346,102 patent/US8315128B1/en active Active
- 2012-09-28 EP EP12186507.5A patent/EP2613317B1/en active Active
- 2012-10-04 JP JP2012222335A patent/JP2013143177A/ja not_active Withdrawn
- 2012-10-04 KR KR1020120109883A patent/KR20130081632A/ko not_active Withdrawn
- 2012-10-08 CN CN201210377035.8A patent/CN103198839B/zh active Active
- 2012-11-09 TW TW101141846A patent/TWI536372B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US8315128B1 (en) | 2012-11-20 |
| JP2013143177A (ja) | 2013-07-22 |
| KR20130081632A (ko) | 2013-07-17 |
| EP2613317A1 (en) | 2013-07-10 |
| CN103198839B (zh) | 2017-09-12 |
| CN103198839A (zh) | 2013-07-10 |
| TW201344681A (zh) | 2013-11-01 |
| EP2613317B1 (en) | 2020-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |