CN113838481B - 用于验证磁带的非暂时性计算机可读介质、方法和装置 - Google Patents

用于验证磁带的非暂时性计算机可读介质、方法和装置 Download PDF

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Publication number
CN113838481B
CN113838481B CN202111140123.1A CN202111140123A CN113838481B CN 113838481 B CN113838481 B CN 113838481B CN 202111140123 A CN202111140123 A CN 202111140123A CN 113838481 B CN113838481 B CN 113838481B
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China
Prior art keywords
saturation
current
tape
magnetic tape
head
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CN202111140123.1A
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Chinese (zh)
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CN113838481A (zh
Inventor
E·R·维普特拉
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Oracle International Corp
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Oracle International Corp
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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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
CN202111140123.1A 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置 Active CN113838481B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111140123.1A CN113838481B (zh) 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置

Applications Claiming Priority (5)

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
CN202111140123.1A CN113838481B (zh) 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置
CN201880048377.0A CN110945585B (zh) 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置

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CN201880048377.0A Division CN110945585B (zh) 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置

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CN113838481A CN113838481A (zh) 2021-12-24
CN113838481B true CN113838481B (zh) 2023-06-27

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CN201880048377.0A Active CN110945585B (zh) 2017-07-31 2018-07-31 用于验证磁带的非暂时性计算机可读介质、方法和装置

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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=)

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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 (3)

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JPH0344802A (ja) * 1989-07-12 1991-02-26 Fuji Electric Co Ltd 磁気ヘッドの適正書き込み電流決定方法
JP2003006826A (ja) * 2001-06-27 2003-01-10 Fuji Photo Film Co Ltd サーボ信号検査装置
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

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JPH0654542B2 (ja) * 1987-08-28 1994-07-20 富士通株式会社 光学記憶装置
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
JP2002367101A (ja) * 2001-06-07 2002-12-20 Fuji Photo Film Co Ltd サーボ信号検査装置
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

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JPH0344802A (ja) * 1989-07-12 1991-02-26 Fuji Electric Co Ltd 磁気ヘッドの適正書き込み電流決定方法
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
JP2003006826A (ja) * 2001-06-27 2003-01-10 Fuji Photo Film Co Ltd サーボ信号検査装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
磁头、磁盘及读/写通道的测试器;StanleyH.Dinsmore等;《计算机工程》;19820620(第03期);全文 *

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Publication number Publication date
US9953671B1 (en) 2018-04-24
US20190035423A1 (en) 2019-01-31
JP7129468B2 (ja) 2022-09-01
CN110945585A (zh) 2020-03-31
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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