JP7129468B2 - 磁気テープ記憶装置の飽和ベースの検証 - Google Patents

磁気テープ記憶装置の飽和ベースの検証 Download PDF

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JP7129468B2
JP7129468B2 JP2020505229A JP2020505229A JP7129468B2 JP 7129468 B2 JP7129468 B2 JP 7129468B2 JP 2020505229 A JP2020505229 A JP 2020505229A JP 2020505229 A JP2020505229 A JP 2020505229A JP 7129468 B2 JP7129468 B2 JP 7129468B2
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Prior art keywords
magnetic tape
saturation
simulated current
current
tape
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JP2020505229A
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Japanese (ja)
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JP2020529697A5 (https=
JP2020529697A (ja
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ウィプトラ，エデュアルド・レイマスカ
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オラクル・インターナショナル・コーポレイション
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    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • 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
    • 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
    • G11B20/1879—Direct read-after-write methods
    • 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
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
JP2020505229A 2017-07-31 2018-07-31 磁気テープ記憶装置の飽和ベースの検証 Active JP7129468B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15/665,340 US9953671B1 (en) 2017-07-31 2017-07-31 Saturation-based verification of magnetic tape storage
US15/665,340 2017-07-31
PCT/US2018/044459 WO2019027938A1 (en) 2017-07-31 2018-07-31 MAGNETIC TAPE STORAGE SATURATION-BASED VERIFICATION

Publications (3)

Publication Number Publication Date
JP2020529697A JP2020529697A (ja) 2020-10-08
JP2020529697A5 JP2020529697A5 (https=) 2021-08-19
JP7129468B2 true JP7129468B2 (ja) 2022-09-01

Family

ID=61951782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020505229A Active JP7129468B2 (ja) 2017-07-31 2018-07-31 磁気テープ記憶装置の飽和ベースの検証

Country Status (5)

Country Link
US (2) US9953671B1 (https=)
EP (1) EP3662472B1 (https=)
JP (1) JP7129468B2 (https=)
CN (2) CN113838481B (https=)
WO (1) WO2019027938A1 (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9953671B1 (en) * 2017-07-31 2018-04-24 Oracle International Corporation Saturation-based verification of magnetic tape storage
JP7396287B2 (ja) * 2019-03-27 2023-12-12 ソニーグループ株式会社 サーボ信号ベリファイ装置、サーボライタ、磁気記録テープの製造方法、及びサーボ信号読取ヘッド
US11626134B1 (en) * 2021-12-29 2023-04-11 Seagate Technology Llc Media design and write technique for creating neutral polarity transition zones

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002367101A (ja) 2001-06-07 2002-12-20 Fuji Photo Film Co Ltd サーボ信号検査装置
JP2003006826A (ja) 2001-06-27 2003-01-10 Fuji Photo Film Co Ltd サーボ信号検査装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0654542B2 (ja) * 1987-08-28 1994-07-20 富士通株式会社 光学記憶装置
JPH0827885B2 (ja) * 1989-07-12 1996-03-21 富士電機株式会社 磁気ヘッドの適正書き込み電流決定方法
US5473550A (en) * 1994-03-21 1995-12-05 Seagate Technology, Inc. Fast calibration using microsteps
US5689384A (en) * 1994-06-30 1997-11-18 International Business Machines Corporation Timing based servo system for magnetic tape systems
US5793558A (en) * 1996-06-05 1998-08-11 Western Digital Corporation Method for seek time optimization employing voice-coil motor current saturation level to define an adaptive deceleration profile
US6181505B1 (en) * 1998-06-26 2001-01-30 Seagate Technology Llc Synchronous digital demodulator with integrated read and servo channels
US6674605B1 (en) * 1999-04-21 2004-01-06 Seagate Technology Llc PQ enhanced dual stage servo controller
GB2366658B (en) * 1999-06-24 2003-11-05 Seagate Technology Llc Method and apparatus for maintaining servo stability during actuator saturation
US6525892B1 (en) * 2000-01-28 2003-02-25 Western Digital Technologies, Inc. Method of calibrating a write current-setting for servo writing a disk drive
US6865050B2 (en) * 2001-06-07 2005-03-08 Fuji Photo Film Co., Ltd. Servo signal recording device and servo signal verifying device using edge detection
US7072133B1 (en) * 2001-10-15 2006-07-04 Imation Corp. Servo mark verify head
JP3966512B2 (ja) * 2003-04-22 2007-08-29 富士フイルム株式会社 サーボライトヘッドアセンブリ及びサーボライタ
US7486471B2 (en) * 2006-03-03 2009-02-03 Seagate Technology Llc Methods and apparatus for constraining transducer velocity based on disk rotational latency while seeking in a disk drive
US7679852B2 (en) * 2007-06-28 2010-03-16 Seagate Technology Llc Adjustment of read/write clock edge timing
US8027121B2 (en) * 2009-11-04 2011-09-27 International Business Machines Corporation Positioning coarse servo actuator of tape servo system to allow fine servo actuator to follow tape shift excursions
US8526132B2 (en) * 2010-02-03 2013-09-03 HGST Netherlands, B.V. Servo patterning compatible with planarization of patterned magnetic disks
US8059362B2 (en) * 2010-03-02 2011-11-15 International Business Machines Corporation Positioning a coarse actuator of compound actuator tape servo system at midpoint of maximum peaks of lateral tape movement
GB2525222A (en) * 2014-04-16 2015-10-21 Ibm Method and apparatus for operating a tape storage device
US9953671B1 (en) * 2017-07-31 2018-04-24 Oracle International Corporation Saturation-based verification of magnetic tape storage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002367101A (ja) 2001-06-07 2002-12-20 Fuji Photo Film Co Ltd サーボ信号検査装置
JP2003006826A (ja) 2001-06-27 2003-01-10 Fuji Photo Film Co Ltd サーボ信号検査装置

Also Published As

Publication number Publication date
US9953671B1 (en) 2018-04-24
US20190035423A1 (en) 2019-01-31
CN110945585A (zh) 2020-03-31
CN113838481B (zh) 2023-06-27
CN113838481A (zh) 2021-12-24
EP3662472A1 (en) 2020-06-10
US10217480B2 (en) 2019-02-26
EP3662472B1 (en) 2023-05-24
JP2020529697A (ja) 2020-10-08
WO2019027938A1 (en) 2019-02-07
CN110945585B (zh) 2021-10-15

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