DE69025077D1 - Servosystem fuer ein plattengeraet mit fuer hohe frequenzen verstaerkungsbegrenztem spurfolgendem kompensator - Google Patents
Servosystem fuer ein plattengeraet mit fuer hohe frequenzen verstaerkungsbegrenztem spurfolgendem kompensatorInfo
- Publication number
- DE69025077D1 DE69025077D1 DE69025077T DE69025077T DE69025077D1 DE 69025077 D1 DE69025077 D1 DE 69025077D1 DE 69025077 T DE69025077 T DE 69025077T DE 69025077 T DE69025077 T DE 69025077T DE 69025077 D1 DE69025077 D1 DE 69025077D1
- Authority
- DE
- Germany
- Prior art keywords
- servosystem
- high frequency
- plate device
- frequency reinforcing
- following compensator
- 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.)
- Expired - Fee Related
Links
- 230000003014 reinforcing effect Effects 0.000 title 1
Classifications
-
- 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
-
- 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
- G11B5/59622—Gain control; Filters
-
- 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
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
- G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S360/00—Dynamic magnetic information storage or retrieval
- Y10S360/90—Disk drive packaging
- Y10S360/901—Access time
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S360/00—Dynamic magnetic information storage or retrieval
- Y10S360/90—Disk drive packaging
- Y10S360/903—Physical parameter, e.g. form factor
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/420,370 US5050016A (en) | 1989-10-12 | 1989-10-12 | Disk drive servo system using gain limited high-frequency track-following compensator |
PCT/US1990/004762 WO1991006096A1 (en) | 1989-10-12 | 1990-08-22 | Disk drive servo system using gain limited high-frequency track-following compensator |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69025077D1 true DE69025077D1 (de) | 1996-03-07 |
DE69025077T2 DE69025077T2 (de) | 1996-05-30 |
Family
ID=23666189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69025077T Expired - Fee Related DE69025077T2 (de) | 1989-10-12 | 1990-08-22 | Servosystem fuer ein plattengeraet mit fuer hohe frequenzen verstaerkungsbegrenztem spurfolgendem kompensator |
Country Status (6)
Country | Link |
---|---|
US (1) | US5050016A (de) |
EP (1) | EP0572380B1 (de) |
JP (1) | JP2994745B2 (de) |
KR (1) | KR0184589B1 (de) |
DE (1) | DE69025077T2 (de) |
WO (1) | WO1991006096A1 (de) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5170299A (en) * | 1990-08-17 | 1992-12-08 | Quantum Corporation | Edge servo for disk drive head positioner |
US5305302A (en) * | 1990-12-04 | 1994-04-19 | Conner Peripherals, Inc. | Track format and record carrier system for split data field support |
US5258695A (en) * | 1990-12-19 | 1993-11-02 | Integral Peripherals, Inc. | Spin motor control system for a hard disk assembly |
WO1992011628A1 (en) * | 1990-12-19 | 1992-07-09 | Integral Peripherals, Inc. | Miniature hard disk drive for portable computer |
US5459623A (en) * | 1990-12-19 | 1995-10-17 | Integral Peripeherals, Inc. | Servo field scheme for high sampling rate and reduced overhead embedded servo systems in disk drives |
US5475540A (en) * | 1991-06-04 | 1995-12-12 | Quantum Corporation | Magnetic data storage disk drive with data block sequencing by using ID fields after embedded servo sectors |
JP2625609B2 (ja) * | 1991-07-10 | 1997-07-02 | インターナショナル・ビジネス・マシーンズ・コーポレイション | ディスク記憶装置 |
US5280603A (en) * | 1991-09-19 | 1994-01-18 | Quantum Corporation | Servo pause for disk drive embedded multi-tasked controller |
US5379171A (en) * | 1991-09-25 | 1995-01-03 | Integral Peripherals | Microminiature hard disk drive |
US5321560A (en) * | 1991-09-25 | 1994-06-14 | Integral Peripherals, Inc. | Embedded servo system for low power disk drives |
US6310747B1 (en) | 1991-09-25 | 2001-10-30 | Mobile Storage Technology, Inc. | Method for reducing external signal interference with signals in a computer disk storage system |
JPH06503196A (ja) * | 1991-10-18 | 1994-04-07 | マックスター・コーポレーション | ハイブリッドセクタ・サーボシステム |
JP2656186B2 (ja) * | 1992-03-30 | 1997-09-24 | 富士通株式会社 | 磁気ディスク装置のデータ面サーボパターン書込み方法 |
US5473238A (en) * | 1993-10-18 | 1995-12-05 | Allegro Microsystems, Inc. | Disc drive power management system |
US5442498A (en) * | 1993-11-08 | 1995-08-15 | International Business Machines Corporation | Asynchronous track code encodement and detection for disk drive servo control system |
JPH07192238A (ja) * | 1993-11-23 | 1995-07-28 | Internatl Business Mach Corp <Ibm> | ディスク・ドライブ・サーボ制御装置 |
US5777813A (en) | 1994-03-11 | 1998-07-07 | Syquest Technology, Inc. | Method and apparatus for reducing sideband interference when storing or retrieving data in a disk drive system adapted for downward compatibilty |
US5602692A (en) * | 1994-10-07 | 1997-02-11 | International Business Machines Corporation | Sampled position error signal demodulation system for banded data disk drives |
US6005725A (en) | 1994-12-19 | 1999-12-21 | Mobile Storage Technology Inc. | Variable zone layout and track pitch parameter considerations for information storage disk drive |
US5596458A (en) | 1994-12-19 | 1997-01-21 | Integral Peripherals, Inc. | Variable zone layout for information storage disk drive |
US5717538A (en) * | 1995-01-20 | 1998-02-10 | International Business Machines Corporation | Asynchronous position error signal detector employing weighted accumulation for use in servo system |
US5818659A (en) * | 1995-05-02 | 1998-10-06 | International Business Machines Corporation | Quadrature servo pattern disk providing asynchronous digital PES |
JP2965062B2 (ja) * | 1996-06-10 | 1999-10-18 | 富士通株式会社 | ディスク装置及びディスク装置のヘッド位置制御方法 |
US5825578A (en) * | 1996-06-11 | 1998-10-20 | Seagate Technology, Inc. | Method and apparatus for compensating track position due to written-in runout error in a disc drive |
US6100829A (en) * | 1997-10-20 | 2000-08-08 | Seagate Technology, Inc. | Method and apparatus for a digital peak detection system including a countdown timer |
JP2000173211A (ja) | 1998-11-30 | 2000-06-23 | Fujitsu Ltd | 記憶装置およびそれに用いられるディスク位置検出方法 |
US6747835B2 (en) | 2000-04-21 | 2004-06-08 | Seagate Technology Llc | Method and apparatus for simultaneously measuring and calculating servo-related data |
US6937428B2 (en) * | 2000-06-09 | 2005-08-30 | Seagate Technology Llc | Reducing actuator arm oscillation during settle mode in a disc drive servo system |
US7016133B2 (en) * | 2002-12-27 | 2006-03-21 | Matsushita Electric Industrial Co., Ltd. | Systems for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness |
US7006311B2 (en) * | 2002-12-27 | 2006-02-28 | Matsushita Electric Industrial Co., Ltd | Systems for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
US6995935B2 (en) * | 2002-12-27 | 2006-02-07 | Matsushita Electric Industrial Co., Ltd. | Methods for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness |
US7006315B2 (en) | 2002-12-27 | 2006-02-28 | Matsushita Electric Industrial Co., Ltd. | Systems for improving servo-demodulation robustness |
US6943981B2 (en) | 2002-12-27 | 2005-09-13 | Matsushita Electric Co., Ltd. | Methods for improving servo-demodulation robustness |
US7006312B2 (en) * | 2002-12-27 | 2006-02-28 | Matsushita Electic Industrial Co., Ltd. | Methods for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
DE102004013675A1 (de) * | 2003-02-04 | 2005-10-27 | Kastriot Merlaku | Computer-Festplatte |
US7072128B2 (en) * | 2003-07-16 | 2006-07-04 | Matsushita Electric Industrial Co., Ltd. | Methods for searching for SAM patterns at multiple nominal frequencies |
US7054083B2 (en) * | 2003-07-16 | 2006-05-30 | Matsushita Electric Industrial Co., Ltd. | Systems for searching for SAM patterns at multiple nominal frequencies |
US7092177B2 (en) * | 2003-07-16 | 2006-08-15 | Matsushita Electric Industrial Co., Ltd. | Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters |
US7075742B2 (en) * | 2003-07-16 | 2006-07-11 | Matsushita Electric Industrial Co., Ltd. | Servo demodulator systems including multiple servo demodulators |
US6992856B2 (en) * | 2003-09-18 | 2006-01-31 | Matsushita Electric Industrial Co., Ltd. | Systems for limiting channel control values to thereby improve servo-demodulation robustness |
US6992855B2 (en) * | 2003-09-18 | 2006-01-31 | Matsushita Electric Industrial Co., Ltd. | Methods for limiting channel control values to thereby improve servo-demodulation robustness |
JP2008027558A (ja) * | 2006-07-25 | 2008-02-07 | Hitachi Global Storage Technologies Netherlands Bv | データ記録装置、記録媒体、およびエラー検出方法 |
US8023392B2 (en) * | 2006-12-15 | 2011-09-20 | Seagate Technology Llc | Compensating the effects of non-synchronous writing of erasable servo marks |
US20090086360A1 (en) * | 2007-10-02 | 2009-04-02 | Seagate Technology Llc | Low Complexity Servo Demodulation Algorithm for Probe Storage |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326226A (en) * | 1980-05-08 | 1982-04-20 | Storage Technology Corporation | Constant bandwidth automatic gain control |
EP0097209B1 (de) * | 1982-06-18 | 1987-11-04 | International Business Machines Corporation | Magnetische Aufzeichnungsplatte und Magnetplattenvorrichtung unter Verwendung eines Servosektors für Kopfpositionierung |
US4775903A (en) * | 1986-10-14 | 1988-10-04 | Hewlett-Packard Company | Sampled servo seek and track follow system for a magnetic disc drive |
JPH01116972A (ja) * | 1987-10-30 | 1989-05-09 | Mitsubishi Electric Corp | 記憶装置 |
JPH01156801A (ja) * | 1987-12-14 | 1989-06-20 | Mitsubishi Electric Corp | 記憶装置 |
-
1989
- 1989-10-12 US US07/420,370 patent/US5050016A/en not_active Expired - Lifetime
-
1990
- 1990-08-22 EP EP90913101A patent/EP0572380B1/de not_active Expired - Lifetime
- 1990-08-22 DE DE69025077T patent/DE69025077T2/de not_active Expired - Fee Related
- 1990-08-22 JP JP2512284A patent/JP2994745B2/ja not_active Expired - Lifetime
- 1990-08-22 KR KR1019920700844A patent/KR0184589B1/ko not_active IP Right Cessation
- 1990-08-22 WO PCT/US1990/004762 patent/WO1991006096A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0572380B1 (de) | 1996-01-24 |
JP2994745B2 (ja) | 1999-12-27 |
KR0184589B1 (ko) | 1999-04-15 |
US5050016A (en) | 1991-09-17 |
JPH05501171A (ja) | 1993-03-04 |
WO1991006096A1 (en) | 1991-05-02 |
KR920704273A (ko) | 1992-12-19 |
DE69025077T2 (de) | 1996-05-30 |
EP0572380A4 (de) | 1993-01-07 |
EP0572380A1 (de) | 1993-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: SEAGATE TECHNOLOGY, INC. (N.D.GES.D.STAATES DELAWA |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US |
|
8328 | Change in the person/name/address of the agent |
Free format text: HENKEL, FEILER & HAENZEL, 81675 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |