HK1009067A1 - Methods of monitoring operating temperatures in disc drives to prevent thermal mistracking - Google Patents

Methods of monitoring operating temperatures in disc drives to prevent thermal mistracking

Info

Publication number
HK1009067A1
HK1009067A1 HK98109788A HK98109788A HK1009067A1 HK 1009067 A1 HK1009067 A1 HK 1009067A1 HK 98109788 A HK98109788 A HK 98109788A HK 98109788 A HK98109788 A HK 98109788A HK 1009067 A1 HK1009067 A1 HK 1009067A1
Authority
HK
Hong Kong
Prior art keywords
track
thermal
transducer
micro
written
Prior art date
Application number
HK98109788A
Other languages
English (en)
Inventor
James N Krause
Original Assignee
Seagate Technology
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 Seagate Technology filed Critical Seagate Technology
Publication of HK1009067A1 publication Critical patent/HK1009067A1/xx

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
    • G11B5/54—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
    • G11B5/5565—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for compensation of variations of physical parameters, e.g. temperature
    • 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
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Control Of Temperature (AREA)
  • Testing Of Coins (AREA)
HK98109788A 1985-11-20 1998-08-10 Methods of monitoring operating temperatures in disc drives to prevent thermal mistracking HK1009067A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/800,061 US4620244A (en) 1985-11-20 1985-11-20 Compensation method to correct thermally induced off-track errors in disc drives

Publications (1)

Publication Number Publication Date
HK1009067A1 true HK1009067A1 (en) 1999-05-21

Family

ID=25177411

Family Applications (2)

Application Number Title Priority Date Filing Date
HK49494A HK49494A (en) 1985-11-20 1994-05-19 Compensation method to correct thermally induced off-track errors in disc drives
HK98109788A HK1009067A1 (en) 1985-11-20 1998-08-10 Methods of monitoring operating temperatures in disc drives to prevent thermal mistracking

Family Applications Before (1)

Application Number Title Priority Date Filing Date
HK49494A HK49494A (en) 1985-11-20 1994-05-19 Compensation method to correct thermally induced off-track errors in disc drives

Country Status (9)

Country Link
US (1) US4620244A (xx)
EP (2) EP0522597B1 (xx)
JP (1) JP2583220B2 (xx)
AT (1) ATE101744T1 (xx)
AU (1) AU589334B2 (xx)
CA (1) CA1283975C (xx)
DE (2) DE3650669T2 (xx)
HK (2) HK49494A (xx)
SG (1) SG48190A1 (xx)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134976A (ja) * 1984-12-06 1986-06-23 Canon Inc ヘツド位置決め方法
JPS623473A (ja) * 1985-06-28 1987-01-09 Toshiba Corp 磁気ヘツドの位置決め制御方式
US4816938A (en) * 1986-06-02 1989-03-28 Xebec Process for determining data disk track centers
JPS62285280A (ja) * 1986-06-04 1987-12-11 Alps Electric Co Ltd Ｏトラツクリストア方法
USRE35302E (en) * 1986-08-27 1996-07-23 Sony Corporation Magnetic disc apparatus
US4974109A (en) * 1986-08-27 1990-11-27 Sony Corporation Hard disk drive employing a reference track to compensate for tracking error
US5163162A (en) * 1990-11-14 1992-11-10 Ibm Corporation System and method for data recovery in multiple head assembly storage devices
US5233487A (en) * 1991-06-27 1993-08-03 International Business Machines Corporation Functional measurement of data head misregistration
US6483658B1 (en) 1994-01-28 2002-11-19 Seagate Technology Llc Method of measuring the read-to-write offset in a disc drive having separate read and write elements
US6061201A (en) * 1994-02-07 2000-05-09 Seagate Technology, Inc. Method of measuring the read-to-write offset in a disc drive having separate read and write elements
KR20020001742A (ko) 1999-02-22 2002-01-09 추후 반복 가능한 런아웃 에러 보상
DE19983952T1 (de) 1999-05-07 2002-06-20 Seagate Technology Llc Kompensation wiederholbaren Auslaufens mit iterativer Lernsteuerung bei einem Plattenspeichersystem
WO2001008139A1 (en) 1999-07-23 2001-02-01 Seagate Technology Llc Repeatable runout compensation using a learning algorithm with scheduled parameters
US6952320B1 (en) 1999-12-16 2005-10-04 Seagate Technology Llc Virtual tracks for repeatable runout compensation
JP2004530237A (ja) 2000-10-10 2004-09-30 シーゲイト テクノロジー エルエルシー 信号の劣化を測定する方法及びその装置
US7209304B2 (en) * 2001-06-29 2007-04-24 Seagate Technology Llc Systems, apparatus, and methods to determine thermal decay characterization from an equalized signal-to-noise ratio of a magnetic disc drive device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3412386A (en) * 1964-09-01 1968-11-19 Mohawk Data Sciences Corp Random access positioning means for a magnetic disc file
GB1549439A (en) * 1976-07-06 1979-08-08 Data Recording Instr Co Magnetic disc storage devices
FR2373819A1 (fr) * 1976-12-09 1978-07-07 Burroughs Corp Installation et procede de positionnement notamment pour tetes de lecture de disque
GB1516239A (en) * 1976-12-09 1978-06-28 Burroughs Corp Positioning system and method particularly useful for magnetic disc drives
JPS54119907A (en) * 1978-03-10 1979-09-18 Hokushin Electric Works Magnetic disk memory
US4445153A (en) * 1980-03-07 1984-04-24 Ricoh Company, Ltd. Method of correcting track misalignment of floppy disc and apparatus therefor
JPS5794964A (en) * 1980-12-01 1982-06-12 Nec Corp Magnetic disk device
US4536809A (en) * 1982-05-10 1985-08-20 Digital Equipment Corporation Adaptive misposition correcting method and apparatus for magnetic disk servo system
EP0094314B2 (en) * 1982-05-10 1993-06-02 Digital Equipment Corporation Continuous-plus-embedded servo data position control system for magnetic disk device
JPS58200471A (ja) * 1982-05-19 1983-11-22 Hitachi Ltd ヘツド切換え方式
US4499510A (en) * 1982-08-03 1985-02-12 Weltec Digital, Inc. Precision alignment system for information storage devices
JPS5930270A (ja) * 1982-08-10 1984-02-17 Hitachi Maxell Ltd デイスク状記録媒体
US4485418A (en) * 1982-08-12 1984-11-27 Magnetic Peripherals, Inc. System and method of locating the center of a track on a magnetic storage disk
JPS59144079A (ja) * 1983-02-08 1984-08-17 Sony Corp 磁気円盤記録再生装置
JPS6057583A (ja) * 1983-09-07 1985-04-03 Seiko Epson Corp 回転式磁気記録再生装置
JPS6087477A (ja) * 1983-10-19 1985-05-17 Fujitsu Ltd 磁気デイスク装置の磁気ヘツド制御方式
JPS60136975A (ja) * 1983-12-26 1985-07-20 Hitachi Ltd 磁気記録再生装置
JPS60191481A (ja) * 1984-03-09 1985-09-28 Mitsubishi Electric Corp デイスク装置

Also Published As

Publication number Publication date
AU589334B2 (en) 1989-10-05
DE3689648D1 (de) 1994-03-24
JPS62217472A (ja) 1987-09-24
CA1283975C (en) 1991-05-07
AU6538986A (en) 1987-05-28
EP0522597B1 (en) 1998-04-01
DE3689648T2 (de) 1994-05-19
EP0522597A2 (en) 1993-01-13
EP0522597A3 (en) 1994-07-20
HK49494A (en) 1994-05-27
JP2583220B2 (ja) 1997-02-19
EP0224379A2 (en) 1987-06-03
DE3650669T2 (de) 1998-07-23
US4620244A (en) 1986-10-28
EP0224379B1 (en) 1994-02-16
DE3650669D1 (de) 1998-05-07
EP0224379A3 (en) 1989-06-14
SG48190A1 (en) 1998-04-17
ATE101744T1 (de) 1994-03-15

Similar Documents

Publication Publication Date Title
SG48190A1 (en) Methods of monitoring operating temperatures in disc drives to prevent thermal mistracking
ES2129414T3 (es) Sistema de control digital para unidades de disco.
EP0189187A3 (en) Magnetic-optical disc memory system
ES450069A1 (es) Un aparato de almacenamiento de datos mejorado.
EP0148999A1 (en) Tape recorder head position controlling device
MY110421A (en) Method and apparatus for positioning transducers
GB1516239A (en) Positioning system and method particularly useful for magnetic disc drives
EP0353758A3 (en) Video data recording apparatus for recording search data
EP0403266A3 (en) Magneto-optical recording and/or reproducting apparatus
ES478009A1 (es) Un aparato para reproducir senales de informacion.
ES483939A1 (es) Un aparato para reproducir senales de informacion registra- das en sucesivas pistas paralelas
EP0183412A3 (en) Apparatus for recording and reproducing data on a magnetic recording medium
EP0233606A3 (en) Method and disc drive for compensating for information shifts on disc storage media
DE3167684D1 (en) Tracking control arrangements for magnetic reproducing devices
MY101621A (en) Positioning misaligned disk heads
JPS62231471A (ja) フロツピ−デイスク装置のキヤリツジ装置
KR890700904A (ko) 미세위치 정함의 디스크 드라이브 서보장치
EP0392789A3 (en) Tracking control device for a magnetic recording and reproducing apparatus
KR900007738B1 (ko) 자기디스크 열팽창 보상방법
JPS56114124A (en) Multitrack head position detection
KR880008298A (ko) 자기 디스크 드라이브의 트랙 오프세트 보정방법
JPS578918A (en) Magnetic recording and reproducing device
KR880014512A (ko) 트랙가이드가 행하여지는 레코더
CA2312044A1 (en) Digital servo control system for use in disk drives
EP0348165A3 (en) Disc recording and/or reproducing apparatus

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)