CN1221944C - 磁存储媒体、其磁道间距控制方法及该媒体用磁记录装置 - Google Patents
磁存储媒体、其磁道间距控制方法及该媒体用磁记录装置 Download PDFInfo
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- CN1221944C CN1221944C CNB028010965A CN02801096A CN1221944C CN 1221944 C CN1221944 C CN 1221944C CN B028010965 A CNB028010965 A CN B028010965A CN 02801096 A CN02801096 A CN 02801096A CN 1221944 C CN1221944 C CN 1221944C
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 218
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Images
Classifications
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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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
-
- 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
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- 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
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV 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
- G11B5/48—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
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
-
- 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
- G11B5/581—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 maintaining desired contact or spacing by direct interaction of forces generated between heads or supports thereof and record carriers or supports thereof, e.g. attraction-repulsion interactions
-
- 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
- G11B5/596—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 disks
- G11B5/59605—Circuits
- G11B5/59611—Detection or processing of peak/envelop signals
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B2005/3996—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
-
- 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
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1277—Control data, system data or management information, i.e. data used to access or process user data for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
-
- 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
- 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
-
- 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)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
Description
半径(mm) | ETW(μm) | GB(μm) | TP(μm) | TPI |
11.2 | 0.677 | 0.12 | 0.758 | 33,489 |
10.2 | 0.684 | 0.12 | 0.766 | 33,179 |
9.3 | 0.689 | 0.12 | 0.772 | 32,914 |
8.4 | 0.694 | 0.12 | 0.771 | 32,697 |
7.4 | 0.697 | 0.12 | 0.781 | 32,531 |
6.5 | 0.699 | 0.12 | 0.783 | 32,425 |
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33028/2001 | 2001-02-09 | ||
JP2001033028A JP2002237142A (ja) | 2001-02-09 | 2001-02-09 | 磁気記憶媒体、そのトラックピッチ制御方法、その媒体のための磁気記録装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1460250A CN1460250A (zh) | 2003-12-03 |
CN1221944C true CN1221944C (zh) | 2005-10-05 |
Family
ID=18896848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB028010965A Expired - Fee Related CN1221944C (zh) | 2001-02-09 | 2002-02-04 | 磁存储媒体、其磁道间距控制方法及该媒体用磁记录装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6950256B2 (zh) |
JP (1) | JP2002237142A (zh) |
KR (1) | KR100471104B1 (zh) |
CN (1) | CN1221944C (zh) |
TW (1) | TW577051B (zh) |
WO (1) | WO2002065460A1 (zh) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7139892B2 (en) * | 2003-05-02 | 2006-11-21 | Microsoft Corporation | Implementation of memory access control using optimizations |
JP4077387B2 (ja) | 2003-09-29 | 2008-04-16 | 株式会社東芝 | ディスク記憶装置、サーボ書込み装置及びトラック間隔決定方法 |
JP4163696B2 (ja) | 2005-03-18 | 2008-10-08 | 株式会社東芝 | ディスクドライブ及びデータライト方法 |
JP2007087547A (ja) | 2005-09-26 | 2007-04-05 | Fujitsu Ltd | 磁気ディスク装置 |
JP2007149223A (ja) * | 2005-11-28 | 2007-06-14 | Toshiba Corp | ディスク記憶装置及び磁気ヘッド |
KR100652446B1 (ko) * | 2005-12-03 | 2006-12-01 | 삼성전자주식회사 | 디스크의 적응적 기록 밀도 조정 방법 및 이용한 디스크드라이브와 디스크 |
JP2007234070A (ja) * | 2006-02-27 | 2007-09-13 | Fujitsu Ltd | ディスリートトラック記録方法、記憶装置及びその製造方法 |
JP2007250054A (ja) | 2006-03-15 | 2007-09-27 | Fujitsu Ltd | 情報記録方法、書込制御回路及び情報記憶装置 |
JP2007293977A (ja) * | 2006-04-24 | 2007-11-08 | Fujitsu Ltd | 磁気ヘッド、及び磁気ディスク装置 |
JP4504331B2 (ja) | 2006-04-27 | 2010-07-14 | 東芝ストレージデバイス株式会社 | ヘッド位置制御方法、ヘッド位置制御装置及びディスク装置 |
JP2008276873A (ja) * | 2007-04-27 | 2008-11-13 | Fujitsu Ltd | 情報記憶装置、記憶装置管理システムおよび記憶装置管理方法 |
JP2009015890A (ja) * | 2007-06-29 | 2009-01-22 | Toshiba Corp | ディスク記憶装置及びヘッド位置決め制御方法 |
US7663829B2 (en) * | 2007-07-27 | 2010-02-16 | Sae Magnetics (H.K.) Ltd. | Performance test method of head gimbal assembly with precise positioning micro-actuator |
JP2009070496A (ja) * | 2007-09-13 | 2009-04-02 | Hitachi Global Storage Technologies Netherlands Bv | ディスク・ドライブ装置、その製造方法及びディスク・ドライブ装置のデータ・トラック・ピッチを決定する方法 |
US7688540B1 (en) | 2007-12-17 | 2010-03-30 | Western Digital Technologies, Inc. | Disk drive selecting TPI profile by estimating head geometry |
US7667920B2 (en) * | 2007-12-28 | 2010-02-23 | Hitachi Global Storage Technologies Netherlands B.V. | Correcting a track pitch error with a subsequent servo-write pass |
JP2010140572A (ja) * | 2008-12-12 | 2010-06-24 | Toshiba Storage Device Corp | 記録方法及び記憶装置 |
US7982993B1 (en) | 2008-12-19 | 2011-07-19 | Western Digital Technologies, Inc. | Disk drive employing different servo TPI to data TPI ratios across the disk surface |
JP2010176739A (ja) * | 2009-01-28 | 2010-08-12 | Toshiba Storage Device Corp | 記憶装置 |
US8116020B1 (en) | 2009-04-21 | 2012-02-14 | Western Digital Technologies, Inc. | Disk drive mapping entries of a defect list into clusters |
US8031423B1 (en) | 2009-06-26 | 2011-10-04 | Western Digital Technologies, Inc. | Disk drive generating actual data TPI profile by combining segments of predetermined data TPI profiles |
US8259549B2 (en) * | 2009-08-04 | 2012-09-04 | Doug Carson & Associates, Inc. | Deflection reference adjustment for variable track pitch media |
US8630052B1 (en) | 2010-09-09 | 2014-01-14 | Western Digital Technologies, Inc. | Disk drive calibrating radial density then adjusting linear density to balance off-track read capability |
US8977834B2 (en) * | 2011-02-14 | 2015-03-10 | Seagate Technology Llc | Dynamic storage regions |
CN104821172B (zh) * | 2014-02-05 | 2018-02-13 | 株式会社东芝 | 磁盘装置、磁头放大器以及磁盘装置的控制方法 |
US9082458B1 (en) | 2014-03-10 | 2015-07-14 | Western Digital Technologies, Inc. | Data storage device balancing and maximizing quality metric when configuring arial density of each disk surface |
US9230605B1 (en) | 2014-12-01 | 2016-01-05 | Western Digital Technologies, Inc. | Data storage device maximizing areal density based on a target quality metric |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU577399B2 (en) * | 1984-08-22 | 1988-09-22 | Sony Corporation | Tracking control apparatus |
US4945427A (en) * | 1988-06-13 | 1990-07-31 | International Business Machines Corporation | Magnetic disk recording with variable track width and variable track density |
JPH0660573A (ja) | 1992-08-07 | 1994-03-04 | Matsushita Electric Ind Co Ltd | 磁気ディスクドライブ装置 |
US5485322A (en) | 1993-03-08 | 1996-01-16 | International Business Machines Corporation | Method and system for writing a clock track on a storage medium |
JPH0745004A (ja) | 1993-07-27 | 1995-02-14 | Fuji Electric Co Ltd | ディスク記憶装置のフォーマッティング方法 |
JPH07211004A (ja) | 1994-01-20 | 1995-08-11 | Fujitsu Ltd | 磁気ディスク装置および記録媒体 |
US5936789A (en) * | 1996-07-30 | 1999-08-10 | Hitachi Electronics Engineering Co., Ltd. | Off-track tester for testing MR head and method of testing the same |
JPH1166776A (ja) * | 1997-08-18 | 1999-03-09 | Fujitsu Ltd | ディスク装置、サーボトラックライトシステムおよびそのサーボトラックライト方法 |
US6052250A (en) * | 1997-08-25 | 2000-04-18 | Western Digital Corporation | Disk drive with separately determined servo and data track pitch |
-
2001
- 2001-02-09 JP JP2001033028A patent/JP2002237142A/ja active Pending
-
2002
- 2002-02-04 KR KR10-2002-7013497A patent/KR100471104B1/ko not_active IP Right Cessation
- 2002-02-04 CN CNB028010965A patent/CN1221944C/zh not_active Expired - Fee Related
- 2002-02-04 WO PCT/JP2002/000903 patent/WO2002065460A1/ja active IP Right Grant
- 2002-02-04 US US10/257,133 patent/US6950256B2/en not_active Expired - Fee Related
- 2002-02-04 TW TW091101878A patent/TW577051B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20030048561A1 (en) | 2003-03-13 |
CN1460250A (zh) | 2003-12-03 |
TW577051B (en) | 2004-02-21 |
WO2002065460A1 (fr) | 2002-08-22 |
KR20020091185A (ko) | 2002-12-05 |
US6950256B2 (en) | 2005-09-27 |
JP2002237142A (ja) | 2002-08-23 |
KR100471104B1 (ko) | 2005-03-10 |
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C06 | Publication | ||
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: PANASONIC HEALTHCARE + MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: MATSUSHITA ELECTRIC INDUSTRIAL CO, LTD. Effective date: 20140520 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20140520 Address after: Ehime Prefecture, Japan Patentee after: Panasonic Healthcare Co., Ltd Address before: Japan Osaka kamato City Patentee before: Matsushita Electric Industrial Co., Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051005 Termination date: 20150204 |
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