CA1153465A - Constant bandwidth automatic gain control - Google Patents

Constant bandwidth automatic gain control

Info

Publication number
CA1153465A
CA1153465A CA000377177A CA377177A CA1153465A CA 1153465 A CA1153465 A CA 1153465A CA 000377177 A CA000377177 A CA 000377177A CA 377177 A CA377177 A CA 377177A CA 1153465 A CA1153465 A CA 1153465A
Authority
CA
Canada
Prior art keywords
servo
signals
gain
loop
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
Application number
CA000377177A
Other languages
English (en)
French (fr)
Inventor
James J. Touchton
Richard J. Pederson
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.)
Storage Technology Corp
Original Assignee
Storage Technology 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 Storage Technology Corp filed Critical Storage Technology Corp
Application granted granted Critical
Publication of CA1153465A publication Critical patent/CA1153465A/en
Expired legal-status Critical Current

Links

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
    • G11B5/59605—Circuits
    • G11B5/59622—Gain control; Filters

Landscapes

  • Feedback Control In General (AREA)
  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
CA000377177A 1980-05-08 1981-05-08 Constant bandwidth automatic gain control Expired CA1153465A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/147,724 US4326226A (en) 1980-05-08 1980-05-08 Constant bandwidth automatic gain control
US147,724 1980-05-08

Publications (1)

Publication Number Publication Date
CA1153465A true CA1153465A (en) 1983-09-06

Family

ID=22522662

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000377177A Expired CA1153465A (en) 1980-05-08 1981-05-08 Constant bandwidth automatic gain control

Country Status (3)

Country Link
US (1) US4326226A (enExample)
JP (1) JPS576901A (enExample)
CA (1) CA1153465A (enExample)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472304A1 (fr) * 1979-12-19 1981-06-26 Cii Honeywell Bull Procede pour commander le gain des circuits amplifiant les signaux delivres par une tete de lecture associee a un support d'informations et dispositif pour le mettre en oeuvre
US5136440A (en) * 1982-05-10 1992-08-04 Digital Equipment Corporation Track identification and counting in a disk drive positioning system
US5153786A (en) * 1982-05-10 1992-10-06 Digital Equipment Corporation Extended range servo system for positioning a disk drive head over a selected track
US5220468A (en) * 1982-05-10 1993-06-15 Digital Equipment Corporation Disk drive with constant bandwidth automatic gain control
US5153787A (en) * 1982-05-10 1992-10-06 Digital Equipment Corporation Combination embedded and dedicated servo system including embedded servo waiting
US5109307A (en) * 1982-05-10 1992-04-28 Digital Equipment Corporation Continuous-plus-embedded servo data position control system for magnetic disk device
US5115360A (en) * 1982-05-10 1992-05-19 Digital Equipment Corporation Embedded burst demodulation and tracking error generation
DE3378800D1 (en) * 1982-05-10 1989-02-02 Digital Equipment Corp Continuous-plus-embedded servo data position control system for magnetic disk device
US5202802A (en) * 1982-05-10 1993-04-13 Digital Equipment Corporation Methods of writing and detecting dibit servo encoding
US5115359A (en) * 1982-05-10 1992-05-19 Digital Equipment Corporation Fault tolerant frame, guardband and index detection methods
US5095471A (en) * 1982-05-10 1992-03-10 Digital Equipment Corporation Velocity estimator in a disk drive positioning system
US5187619A (en) * 1982-05-10 1993-02-16 Digital Equipment Corporation High speed switched automatic gain control
US5099367A (en) * 1982-05-10 1992-03-24 Digital Equipment Corporation Method of automatic gain control basis selection and method of half-track servoing
EP0097208B1 (en) * 1982-06-18 1987-03-11 International Business Machines Corporation Head positioning system with automatic gain control
DE4013009A1 (de) * 1989-04-24 1990-10-25 Mitsubishi Electric Corp Plattenlaufwerk
US5050016A (en) * 1989-10-12 1991-09-17 Conner Peripherals, Inc. Disk drive servo system using gain limited high-frequency track-following compensator
JP2672699B2 (ja) * 1990-08-28 1997-11-05 株式会社東芝 磁気ディスク装置におけるａｇｃ制御装置
US5533031A (en) * 1994-06-24 1996-07-02 International Business Machines Corporation Adjustable read channel equalization for error processing in a recordable media drive
US6710959B1 (en) * 2000-02-25 2004-03-23 Texas Instruments Incorporated Input pole compensation for a disk drive read head
US6583671B2 (en) * 2000-12-01 2003-06-24 Sony Corporation Stable AGC transimpedance amplifier with expanded dynamic range
US7596193B2 (en) 2005-11-09 2009-09-29 Via Telecom, Inc. Variable bandwidth automatic gain control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858690B2 (ja) * 1977-12-28 1983-12-27 株式会社東芝 速度制御方式
JPS54126515A (en) * 1978-03-24 1979-10-01 Nippon Shiyuuhenki Kk Magnetic disc apparatus
US4172267A (en) * 1978-04-03 1979-10-23 Digital Equipment Corporation Dynamic filter for a moving head disk storage system

Also Published As

Publication number Publication date
JPS576901A (en) 1982-01-13
JPH027081B2 (enExample) 1990-02-15
US4326226A (en) 1982-04-20

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Legal Events

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