KR920704273A - 디스크 드라이브 서보시스템 - Google Patents
디스크 드라이브 서보시스템Info
- Publication number
- KR920704273A KR920704273A KR1019920700844A KR920700844A KR920704273A KR 920704273 A KR920704273 A KR 920704273A KR 1019920700844 A KR1019920700844 A KR 1019920700844A KR 920700844 A KR920700844 A KR 920700844A KR 920704273 A KR920704273 A KR 920704273A
- Authority
- KR
- South Korea
- Prior art keywords
- head
- data track
- predetermined data
- track
- adjustment value
- Prior art date
Links
- 238000000034 method Methods 0.000 claims 2
- 230000000295 complement effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 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
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
내용 없음
Description
디스크 드라이브 서보시스템
[도면의 간단한 설명]
제1도는 본 발명에 따른 디스크 구동제어 시스템을 개략적으로 보인 블록선도.
제2도는 다수의 섹터가 제공된 데이타 트랙의 일부를 간략히 보인 단면도.
제3a도 및 제3b도는 본 발명에 따라 제공되는 단순한 대표적인 섹터내에 분포되는 서보제어 정보 및 데이타를 보인 도면.
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (6)
1) 조정값에 응답하여, 디스크의 표면상에 위치하는 데이타 트랙에 대한 헤드의 위치를 조정하는 수단과, 2) 상기 헤드에 커플링되어, 상기 디스크의 표면에서 서보 정보를 판독하는 수단과, 3) 상기 조정수단에 커프링되어 이득요소에 따라 결정되는 상기 조정값을 결정하고, 상기 판독수단에 커플링되어 서보 정보를 수신하며, 사전결정된 주파수를 초과하는 주파수에서 사전결정된 데이타 트랙의 중심선을 중심으로 상기 헤드의 위치가 진동하는지의 여부를 결정하고 조정값을 결정하는데 인가되는 이득요소를 감소시키는 수단으로 구성됨을 특징으로 하는 디스크 드라이브.
제1항에 있어서, 상기 결정수단은 상기 사전결정된 데이타 트랙의 중심선에 대한 상기 헤드의 현재의 위치를 결정하고 상기 사전결정된 데이타 트랙의 중심선에 대한 상기 헤드의 예상 위치 교정항이 상기 사전결정된 데이타 트랙의 중심선의 보완 측부상에 효과적으로 놓이는지의 여부를 또한 결정함을 특징으로 하는 디스크 드라이브.
제2항에 있어서, 서보 정보는 상기 사전결정된 데이타 트랙상의 여러 지점에 저장되고, 상기 결정수단은 상기 조정값을 결정하여 상기 사전결정된 데이타 트랙상의 상기 서보 정보를 각각 발생시키며, 상기결정수단은 상기 예상 위치 교정항을 다음의 식
Pant= (Po-P-1) +Po/n
여기서, Po는 상기 헤드의 현재위치 P-1은 상기헤드의 현재위치의 이전의 값, n은 1에서 100까지의 상수으로 결정함을 특징으로 하는 디스크 드라이브.
제3항에 있어서, 상기 결정수단은 상기조정값을 다음의 식
O=(G*Panto*r)+k
여기서, O는 상기 조정값, G는 이득상수, r은 1과 0.01사이의 이득감소요소, k는 사실상 일정한 트랙 기준 값으로 결정하며, 상기 결정수단은 Pant의 현재 및 이전의 값의 극성이 동일한 경우 상기 이득 감소요소의 값을 1이 되도록 선택하고 Pant의 현재 및 이전의 값의 극성이 다른 경우 1이 하가 되도록 선택함을 특징으로 하는 디스크 드라이브.
제4항에 있어시, 상기 서보 정보를 포함하는 필드는 상기 사전결정된 데이타 트랙을 따라 일정한 간격으로 배열되고, 서보 정보 필드는 약 400 마이크로초 이하의 주기로 판독수단에 의해 연속적으로 판독됨을 특징으로 하는 디스크 드라이브.
1) 표면에 제공되며 다른 데이타가 삽입된 서보 데이타를 각각 저장하는 다수의 데이타 트랙을 구비한 회전 매체와, 2) 아암 및 상기 아암에 설치되는 헤드를 포함하여, 위치결정 신호에 응답하여 상기 데이타 트랙중 사전결정된 하나의 데이타 트랙에 대해 상기 헤드의 위치를 결정하는 액추에이터와, 3) 상기 헤드에 커플링되어, 상기 사전 결정된 데이타 트랙으로 부터 서보 테이태를 판독하는 수단과, 4) 상기 판독수단에 응답하여 트랙추적 제어루프의 생성물로서 상기 액추에이터에 상기위치결정 신호를 제공하며, 상기 헤드의 위치가 상기 액추에이터의 아암의 공명주파수에 근접하는 주파수에서 상기 사전결정된 데이타 트랙의 중심선을 중심으로 진동하는 경우 상기 트랙추적 제어루프의 이득을 감소시키는 보상기 수단을 포함하는 제어수단으로 구성됨을 특징으로 하는 디스크 드라이브.
※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420,370 | 1989-10-12 | ||
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 |
---|---|
KR920704273A true KR920704273A (ko) | 1992-12-19 |
KR0184589B1 KR0184589B1 (ko) | 1999-04-15 |
Family
ID=23666189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920700844A KR0184589B1 (ko) | 1989-10-12 | 1990-08-22 | 디스크 드라이브 서보시스템 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5050016A (ko) |
EP (1) | EP0572380B1 (ko) |
JP (1) | JP2994745B2 (ko) |
KR (1) | KR0184589B1 (ko) |
DE (1) | DE69025077T2 (ko) |
WO (1) | WO1991006096A1 (ko) |
Families Citing this family (44)
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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 |
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 |
US5258695A (en) * | 1990-12-19 | 1993-11-02 | Integral Peripherals, Inc. | Spin motor control system for a hard disk assembly |
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 |
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 |
US5321560A (en) * | 1991-09-25 | 1994-06-14 | Integral Peripherals, Inc. | Embedded servo system for low power disk drives |
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 |
US5596458A (en) | 1994-12-19 | 1997-01-21 | Integral Peripherals, Inc. | Variable zone layout for information storage disk drive |
US6091559A (en) | 1994-12-19 | 2000-07-18 | Mobile Storage Technology Inc. | Variable zone layout and track pitch parameter considerations 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 |
GB2378809B (en) * | 2000-06-09 | 2004-04-14 | Seagate Technology Llc | Reducing actuator arm oscillation during settle mode in a disc drive servo system |
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 |
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 |
US6943981B2 (en) | 2002-12-27 | 2005-09-13 | Matsushita Electric Co., Ltd. | Methods for improving servo-demodulation robustness |
US7006315B2 (en) | 2002-12-27 | 2006-02-28 | Matsushita Electric Industrial Co., Ltd. | Systems for improving servo-demodulation robustness |
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 |
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 |
DE102004013675A1 (de) * | 2003-02-04 | 2005-10-27 | Kastriot Merlaku | Computer-Festplatte |
US7075742B2 (en) * | 2003-07-16 | 2006-07-11 | Matsushita Electric Industrial Co., Ltd. | Servo demodulator systems including multiple servo demodulators |
US7054083B2 (en) * | 2003-07-16 | 2006-05-30 | Matsushita Electric Industrial Co., Ltd. | Systems for searching for SAM patterns at multiple nominal frequencies |
US7072128B2 (en) * | 2003-07-16 | 2006-07-04 | Matsushita Electric Industrial Co., Ltd. | Methods 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 |
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 (en) * | 1982-06-18 | 1987-11-04 | International Business Machines Corporation | Magnetizable recording disk and disk file employing servo sector head positioning |
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 KR KR1019920700844A patent/KR0184589B1/ko not_active IP Right Cessation
- 1990-08-22 EP EP90913101A patent/EP0572380B1/en not_active Expired - Lifetime
- 1990-08-22 WO PCT/US1990/004762 patent/WO1991006096A1/en active IP Right Grant
- 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
Also Published As
Publication number | Publication date |
---|---|
DE69025077D1 (de) | 1996-03-07 |
JPH05501171A (ja) | 1993-03-04 |
EP0572380A4 (en) | 1993-01-07 |
EP0572380B1 (en) | 1996-01-24 |
US5050016A (en) | 1991-09-17 |
WO1991006096A1 (en) | 1991-05-02 |
EP0572380A1 (en) | 1993-12-08 |
DE69025077T2 (de) | 1996-05-30 |
KR0184589B1 (ko) | 1999-04-15 |
JP2994745B2 (ja) | 1999-12-27 |
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