JP7170553B2 - 磁気ディスク装置及びリード処理方法 - Google Patents

磁気ディスク装置及びリード処理方法 Download PDF

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Publication number
JP7170553B2
JP7170553B2 JP2019016893A JP2019016893A JP7170553B2 JP 7170553 B2 JP7170553 B2 JP 7170553B2 JP 2019016893 A JP2019016893 A JP 2019016893A JP 2019016893 A JP2019016893 A JP 2019016893A JP 7170553 B2 JP7170553 B2 JP 7170553B2
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JP
Japan
Prior art keywords
track
read
head
read head
write
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.)
Active
Application number
JP2019016893A
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English (en)
Japanese (ja)
Other versions
JP2020126703A5 (enExample
JP2020126703A (ja
Inventor
信宏 前東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Electronic Devices and Storage Corp
Original Assignee
Toshiba Corp
Toshiba Electronic Devices and Storage Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Electronic Devices and Storage Corp filed Critical Toshiba Corp
Priority to JP2019016893A priority Critical patent/JP7170553B2/ja
Priority to CN201910634449.6A priority patent/CN111524538B/zh
Priority to US16/554,129 priority patent/US10923144B2/en
Publication of JP2020126703A publication Critical patent/JP2020126703A/ja
Publication of JP2020126703A5 publication Critical patent/JP2020126703A5/ja
Application granted granted Critical
Publication of JP7170553B2 publication Critical patent/JP7170553B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G11B5/2652—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative
    • G11B5/2654—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative for recording or erasing
    • 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
    • G11B20/20—Signal processing not specific to the method of recording or reproducing; Circuits therefor for correction of skew for multitrack recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G11B5/2652—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track with more than one gap simultaneously operative
    • 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
    • G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
    • 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
    • G11B20/1816—Testing
    • G11B2020/183—Testing wherein at least one additional attempt is made to read or write the data when a first attempt is unsuccessful
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
JP2019016893A 2019-02-01 2019-02-01 磁気ディスク装置及びリード処理方法 Active JP7170553B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2019016893A JP7170553B2 (ja) 2019-02-01 2019-02-01 磁気ディスク装置及びリード処理方法
CN201910634449.6A CN111524538B (zh) 2019-02-01 2019-07-15 磁盘装置以及读处理方法
US16/554,129 US10923144B2 (en) 2019-02-01 2019-08-28 Magnetic disk device and read processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019016893A JP7170553B2 (ja) 2019-02-01 2019-02-01 磁気ディスク装置及びリード処理方法

Publications (3)

Publication Number Publication Date
JP2020126703A JP2020126703A (ja) 2020-08-20
JP2020126703A5 JP2020126703A5 (enExample) 2021-10-07
JP7170553B2 true JP7170553B2 (ja) 2022-11-14

Family

ID=71837824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019016893A Active JP7170553B2 (ja) 2019-02-01 2019-02-01 磁気ディスク装置及びリード処理方法

Country Status (3)

Country Link
US (1) US10923144B2 (enExample)
JP (1) JP7170553B2 (enExample)
CN (1) CN111524538B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7404285B2 (ja) * 2021-02-16 2023-12-25 株式会社東芝 磁気ディスク装置、及びライト処理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150170676A1 (en) 2013-12-16 2015-06-18 Lsi Corporation Skew-aware disk format for array reader based magnetic recording
US20150255099A1 (en) 2014-03-10 2015-09-10 Western Digital Technologies, Inc. Disk drive employing multiple read elements to increase radial band for two-dimensional magnetic recording
US20160035384A1 (en) 2014-07-29 2016-02-04 Lsi Corporation Skew-tolerant multiple-reader array in array-reader based magnetic recording
JP2016110680A (ja) 2014-12-10 2016-06-20 株式会社東芝 磁気ヘッド、これを備える磁気ディスク装置、および磁気ヘッドを用いる再生方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5946156A (en) * 1997-03-04 1999-08-31 Imation Corp. Tape servo system and methods, write/read heads, and servo track configurations regarding same
US7529061B2 (en) * 2008-02-01 2009-05-05 International Business Machines Corporation Tape drive for maintaining lateral position utilizing longitudinally shifted servo pattern with increased sampling rate
JP2009217911A (ja) 2008-03-12 2009-09-24 Fujitsu Ltd 垂直磁気ヘッド及び垂直磁気記憶装置
US8988812B1 (en) 2013-11-27 2015-03-24 Western Digital (Fremont), Llc Multi-sensor array configuration for a two-dimensional magnetic recording (TDMR) operation
JP6121938B2 (ja) * 2014-04-07 2017-04-26 株式会社東芝 磁気ディスク装置および読み出し制御方法
US9030768B1 (en) * 2014-04-18 2015-05-12 Kabushiki Kaisha Toshiba Controller, disk apparatus, and control method
US8879186B1 (en) * 2014-08-19 2014-11-04 Avago Technologies General Ip (Singapore) Pte. Ltd. Fast flaw scan for multiple sensor systems
US9099125B1 (en) 2014-10-14 2015-08-04 HGST Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with stacked sensors for minimization of the effect of head skew
US9576597B2 (en) * 2015-03-12 2017-02-21 Seagate Technology Llc Disk drive sensor selection
US10210891B1 (en) * 2016-01-28 2019-02-19 Seagate Technology Llc Dual writer head design utilizing two writers of different sizes for writing interlaced data tracks
US9875758B1 (en) * 2016-10-12 2018-01-23 Seagate Technology Llc Slider utilizing multiple transducer sets
US9972349B1 (en) * 2017-08-30 2018-05-15 Western Digital Technologies, Inc. Data storage device with two read elements offset radially by at least one servo track at all radial locations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150170676A1 (en) 2013-12-16 2015-06-18 Lsi Corporation Skew-aware disk format for array reader based magnetic recording
US20150255099A1 (en) 2014-03-10 2015-09-10 Western Digital Technologies, Inc. Disk drive employing multiple read elements to increase radial band for two-dimensional magnetic recording
US20160035384A1 (en) 2014-07-29 2016-02-04 Lsi Corporation Skew-tolerant multiple-reader array in array-reader based magnetic recording
JP2016110680A (ja) 2014-12-10 2016-06-20 株式会社東芝 磁気ヘッド、これを備える磁気ディスク装置、および磁気ヘッドを用いる再生方法

Also Published As

Publication number Publication date
CN111524538B (zh) 2021-08-03
US20200251131A1 (en) 2020-08-06
CN111524538A (zh) 2020-08-11
US10923144B2 (en) 2021-02-16
JP2020126703A (ja) 2020-08-20

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