JP7170583B2 - 磁気記録装置及びその磁気ヘッド制御方法 - Google Patents

磁気記録装置及びその磁気ヘッド制御方法 Download PDF

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Publication number
JP7170583B2
JP7170583B2 JP2019093786A JP2019093786A JP7170583B2 JP 7170583 B2 JP7170583 B2 JP 7170583B2 JP 2019093786 A JP2019093786 A JP 2019093786A JP 2019093786 A JP2019093786 A JP 2019093786A JP 7170583 B2 JP7170583 B2 JP 7170583B2
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Japan
Prior art keywords
track
head
disk
heater
recording
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JP2019093786A
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English (en)
Japanese (ja)
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JP2020187815A5 (enExample
JP2020187815A (ja
Inventor
拓也 松本
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Toshiba Corp
Toshiba Electronic Devices and Storage Corp
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Toshiba Corp
Toshiba Electronic Devices and Storage Corp
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Priority to JP2019093786A priority Critical patent/JP7170583B2/ja
Priority to CN202010008450.0A priority patent/CN111951835B/zh
Priority to US16/773,032 priority patent/US10825478B1/en
Priority to US17/038,446 priority patent/US11189317B2/en
Publication of JP2020187815A publication Critical patent/JP2020187815A/ja
Publication of JP2020187815A5 publication Critical patent/JP2020187815A5/ja
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    • 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
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10388—Improvement or modification of read or write signals signal quality assessment control of the read or write heads, e.g. tracking errors, defocus or tilt compensation
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
    • 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
    • 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
    • G11B2020/1292—Enhancement of the total storage capacity
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G11B5/4866—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives the arm comprising an optical waveguide, e.g. for thermally-assisted recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)
  • Digital Magnetic Recording (AREA)
JP2019093786A 2019-05-17 2019-05-17 磁気記録装置及びその磁気ヘッド制御方法 Active JP7170583B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2019093786A JP7170583B2 (ja) 2019-05-17 2019-05-17 磁気記録装置及びその磁気ヘッド制御方法
CN202010008450.0A CN111951835B (zh) 2019-05-17 2020-01-06 磁记录装置及其的磁头控制方法
US16/773,032 US10825478B1 (en) 2019-05-17 2020-01-27 Magnetic recording apparatus and method of controlling magnetic head thereof
US17/038,446 US11189317B2 (en) 2019-05-17 2020-09-30 Magnetic recording apparatus and method of controlling magnetic head thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019093786A JP7170583B2 (ja) 2019-05-17 2019-05-17 磁気記録装置及びその磁気ヘッド制御方法

Publications (3)

Publication Number Publication Date
JP2020187815A JP2020187815A (ja) 2020-11-19
JP2020187815A5 JP2020187815A5 (enExample) 2021-10-07
JP7170583B2 true JP7170583B2 (ja) 2022-11-14

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JP2019093786A Active JP7170583B2 (ja) 2019-05-17 2019-05-17 磁気記録装置及びその磁気ヘッド制御方法

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US (2) US10825478B1 (enExample)
JP (1) JP7170583B2 (enExample)
CN (1) CN111951835B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022045670A (ja) * 2020-09-09 2022-03-22 株式会社東芝 磁気ディスク装置及び記録領域の設定方法
JP2023031619A (ja) 2021-08-25 2023-03-09 株式会社東芝 磁気ディスク装置
JP2023044139A (ja) * 2021-09-17 2023-03-30 株式会社東芝 磁気ディスク装置及び記録型式の変更方法
JP2024135927A (ja) 2023-03-23 2024-10-04 株式会社東芝 磁気記録再生装置及びその制御方法
JP2025044548A (ja) 2023-09-20 2025-04-02 株式会社東芝 磁気記録再生装置、及び磁気記録再生装置の制御方法
US12456487B1 (en) * 2024-06-17 2025-10-28 Kabushiki Kaisha Toshiba Magnetic disk device and method

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JP2012038391A (ja) 2010-08-10 2012-02-23 Hitachi Ltd 磁気ヘッドスライダ及び磁気記録再生装置
JP2012119035A (ja) 2010-11-30 2012-06-21 Toshiba Corp 磁気記録装置、コントローラ、及び磁気記録方法
JP2017123210A (ja) 2016-01-08 2017-07-13 株式会社東芝 磁気記録装置、及び読み込み方法
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Also Published As

Publication number Publication date
US10825478B1 (en) 2020-11-03
US20200365183A1 (en) 2020-11-19
CN111951835B (zh) 2022-09-30
JP2020187815A (ja) 2020-11-19
CN111951835A (zh) 2020-11-17
US20210012803A1 (en) 2021-01-14
US11189317B2 (en) 2021-11-30

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