DE69325299D1 - Servo-System zur Erhöhung der Aufzeichnungsdichte und Verbesserung der Funktion der automatischen Verstärkungsregelschaltung - Google Patents

Servo-System zur Erhöhung der Aufzeichnungsdichte und Verbesserung der Funktion der automatischen Verstärkungsregelschaltung

Info

Publication number
DE69325299D1
DE69325299D1 DE69325299T DE69325299T DE69325299D1 DE 69325299 D1 DE69325299 D1 DE 69325299D1 DE 69325299 T DE69325299 T DE 69325299T DE 69325299 T DE69325299 T DE 69325299T DE 69325299 D1 DE69325299 D1 DE 69325299D1
Authority
DE
Germany
Prior art keywords
improve
increase
function
control circuit
gain control
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
Application number
DE69325299T
Other languages
English (en)
Other versions
DE69325299T2 (de
Inventor
Ronald R Moon
Gregg J Uhlendorf
Daniel E Barnard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of DE69325299D1 publication Critical patent/DE69325299D1/de
Application granted granted Critical
Publication of DE69325299T2 publication Critical patent/DE69325299T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to 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
    • G11B20/1252—Formatting, e.g. arrangement of data block or words on the record carriers on discs for discontinuous data, e.g. digital information signals, computer programme data
    • 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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
    • 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
    • G11B5/59633—Servo formatting
    • 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
    • G11B2020/1281—Servo information
    • G11B2020/1282—Servo information in embedded servo fields
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE69325299T 1992-03-10 1993-03-09 Servo-System zur Erhöhung der Aufzeichnungsdichte und Verbesserung der Funktion der automatischen Verstärkungsregelschaltung Expired - Fee Related DE69325299T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/850,326 US5339207A (en) 1992-03-10 1992-03-10 Servo system for providing increased recording density and improved operation of the AGC circuitry

Publications (2)

Publication Number Publication Date
DE69325299D1 true DE69325299D1 (de) 1999-07-22
DE69325299T2 DE69325299T2 (de) 1999-11-04

Family

ID=25307837

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69325299T Expired - Fee Related DE69325299T2 (de) 1992-03-10 1993-03-09 Servo-System zur Erhöhung der Aufzeichnungsdichte und Verbesserung der Funktion der automatischen Verstärkungsregelschaltung

Country Status (4)

Country Link
US (1) US5339207A (de)
EP (1) EP0560282B1 (de)
JP (1) JP2674461B2 (de)
DE (1) DE69325299T2 (de)

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US5581420A (en) * 1993-03-08 1996-12-03 International Business Machines Corporation Method and system for determining a radial positioning valve used for writing tracks at a desired track pitch
JPH06259714A (ja) * 1993-03-09 1994-09-16 Hitachi Ltd 磁気ディスク装置
US5523903A (en) * 1993-12-23 1996-06-04 International Business Machines Corporation Sector architecture for fixed block 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
US5596458A (en) 1994-12-19 1997-01-21 Integral Peripherals, Inc. Variable zone layout for information storage disk drive
US5589998A (en) * 1994-12-22 1996-12-31 International Business Machines Corporation Cylinder address storage in multiple servo sectors of a track
KR0131412B1 (ko) * 1995-02-24 1998-04-18 김광호 디지탈 서보 제어방식 디스크 구동 기록 장치의 헤드위치 검출방법
US5696641A (en) * 1995-05-10 1997-12-09 Maxtor Corporation Method using a biasing pattern on a magnetic storage media to reduce MR head noise
KR0159441B1 (ko) * 1995-08-28 1999-01-15 김광호 고용량 하드 디스크 드라이브 구현을 위한 디스크 기록매체와 그에 따른 서보제어방법
US5790341A (en) * 1995-09-20 1998-08-04 International Business Machines Corporation Method and apparatus for reducing servo interference in a magneto-resistive head using skew between head and servo pattern
US5815337A (en) * 1995-10-24 1998-09-29 Seagate Technology, Inc. Tape drive having an arcuate scanner and a method for calibrating the arcuate scanner
KR100195182B1 (ko) * 1995-11-08 1999-06-15 윤종용 서보 필드 단축 하드 디스크 드라이버 및 그 구동방법
US5796537A (en) * 1995-11-13 1998-08-18 Seagate Technology, Inc. Method and arrangement for servoing and formatting magnetic recording tape
US6130792A (en) * 1995-11-13 2000-10-10 Seagate Technology, Inc. Flat servo bursts for arcuate track scanner
US5847892A (en) * 1995-11-13 1998-12-08 Seagate Technology, Inc. Servoing and formatting magnetic recording tape in an arcuate scanner system
US5828513A (en) * 1995-12-07 1998-10-27 International Business Machines Corporation Servo address apparatus and positioning methods for read, write and seek operations in a direct access storage device
KR100195183B1 (ko) 1995-12-19 1999-06-15 윤종용 데이타 필드가 확장된 하드 디스크 드라이브
KR100241748B1 (ko) 1995-12-29 2000-02-01 윤종용 서보 버스트 신호의 미세 디펙 검출을 위한 서보패턴 기록방법 및 구동회로
KR0182979B1 (ko) * 1996-06-05 1999-04-15 김광호 데이타영역 확장을 위한 서보정보 구성방법 및 그에 따른 서보제어방법
KR100189532B1 (ko) * 1996-06-24 1999-06-01 윤종용 하드 디스크 드라이브의 위치 에러신호 제어방법
US5875064A (en) 1996-07-09 1999-02-23 International Business Machines Corporation Method and system for accurate self-servowriting with normalization in a disk drive
KR100194938B1 (ko) * 1996-09-02 1999-06-15 윤종용 자기저항 헤드의 트랙밀도 상승을 위한 오프트랙최적화 방법
US5828508A (en) * 1996-10-17 1998-10-27 Maxtor Corporation Technique for reducing overhead in a data storage system
US6104568A (en) * 1997-11-14 2000-08-15 Castlewod Systems, Inc. Servo-burst gray code pattern
US6411459B1 (en) 1999-02-22 2002-06-25 Seagate Technology Llc Advanced servo writing method for hard disc drives
US6678102B1 (en) 2000-08-29 2004-01-13 Maxtor Corporation High fly write detection method
US6987628B1 (en) 2000-07-13 2006-01-17 Maxtor Corporation Method and apparatus for high fly write detection using stored amplitude values
US6975467B1 (en) 2000-10-11 2005-12-13 Maxtor Corporation Method and apparatus for high fly write detection in a disk drive
JP2002373411A (ja) * 2001-06-15 2002-12-26 Fuji Photo Film Co Ltd 磁気記録媒体およびその駆動装置
US7020052B2 (en) * 2001-08-30 2006-03-28 Iomega Corporation System and method for a high bandwidth servo system
US7092182B2 (en) * 2003-12-10 2006-08-15 Matsushita Electric Industrial Co., Ltd. Marker-zone to determine gross positioning on a reference surface of a media
US8934186B1 (en) * 2014-03-26 2015-01-13 Western Digital Technologies, Inc. Data storage device estimating servo zone to reduce size of track address

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US4164763A (en) * 1977-11-23 1979-08-14 Carrier Corporation Time sequenced multiplexing method of recording and translating data
US4297737A (en) * 1979-12-26 1981-10-27 International Business Machines Corporation Sector servo with sync marks
DE3009548A1 (de) * 1980-03-13 1981-09-24 Ibm Deutschland Gmbh, 7000 Stuttgart Spurnachlaufsteuerung fuer magnetkoepfe sowie verfahren zur kompensation gleichfoermiger stoergroessen
US4424543A (en) * 1981-11-16 1984-01-03 Dma Systems Corporation Method and apparatus for recording transducer positioning information
US4516177A (en) * 1982-09-27 1985-05-07 Quantum Corporation Rotating rigid disk data storage device
JP2581663B2 (ja) * 1985-05-02 1997-02-12 株式会社日立製作所 光ディスク
JPS6297120A (ja) * 1985-10-23 1987-05-06 Hitachi Ltd 磁気ヘツド位置測定用基準デイスク
US4992893A (en) * 1986-02-19 1991-02-12 Hitachi, Ltd. Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error of the magnetic disk driving apparatus
US4669004A (en) * 1986-02-27 1987-05-26 Quantum Corporation High capacity disk file with embedded sector servo
US4783705A (en) * 1986-02-27 1988-11-08 Quantum Corporation High capacity disk file with embedded sector servo and SCSI interface
JPH01105311A (ja) * 1987-10-16 1989-04-21 Hitachi Ltd 磁気デイスク装置
JPH0373476A (ja) * 1989-05-17 1991-03-28 Mitsubishi Electric Corp 記録装置
JPH0335478A (ja) * 1989-07-03 1991-02-15 Alps Electric Co Ltd 情報記録デイスクのフオーマツト構造
US5170299A (en) * 1990-08-17 1992-12-08 Quantum Corporation Edge servo for disk drive head positioner
JPH04119574A (ja) * 1990-09-07 1992-04-21 Fujitsu Ltd シーク制御方法

Also Published As

Publication number Publication date
JP2674461B2 (ja) 1997-11-12
EP0560282B1 (de) 1999-06-16
EP0560282A2 (de) 1993-09-15
DE69325299T2 (de) 1999-11-04
EP0560282A3 (de) 1994-01-05
JPH0644709A (ja) 1994-02-18
US5339207A (en) 1994-08-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee