GB8312591D0 - Magnetic disk drive emergency head retract system - Google Patents

Magnetic disk drive emergency head retract system

Info

Publication number
GB8312591D0
GB8312591D0 GB838312591A GB8312591A GB8312591D0 GB 8312591 D0 GB8312591 D0 GB 8312591D0 GB 838312591 A GB838312591 A GB 838312591A GB 8312591 A GB8312591 A GB 8312591A GB 8312591 D0 GB8312591 D0 GB 8312591D0
Authority
GB
United Kingdom
Prior art keywords
disk drive
magnetic disk
retract system
emergency head
head retract
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.)
Granted
Application number
GB838312591A
Other versions
GB2121589A (en
GB2121589B (en
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.)
Tandon Corp
Original Assignee
Tandon 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 Tandon Corp filed Critical Tandon Corp
Publication of GB8312591D0 publication Critical patent/GB8312591D0/en
Publication of GB2121589A publication Critical patent/GB2121589A/en
Application granted granted Critical
Publication of GB2121589B publication Critical patent/GB2121589B/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
    • G11B5/40—Protective measures on heads, e.g. against excessive temperature 
    • 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
    • G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
    • 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
GB08312591A 1982-06-03 1983-05-06 Magnetic disk drive emergency head retract system Expired GB2121589B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38458682A 1982-06-03 1982-06-03

Publications (3)

Publication Number Publication Date
GB8312591D0 true GB8312591D0 (en) 1983-06-08
GB2121589A GB2121589A (en) 1983-12-21
GB2121589B GB2121589B (en) 1986-06-11

Family

ID=23517910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08312591A Expired GB2121589B (en) 1982-06-03 1983-05-06 Magnetic disk drive emergency head retract system

Country Status (4)

Country Link
JP (1) JPS58218084A (en)
DE (1) DE3317048A1 (en)
FR (1) FR2528213B1 (en)
GB (1) GB2121589B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701902A (en) * 1984-04-27 1987-10-20 Pioneer Electronic Corporation Automatic loading disc player
US4679102A (en) * 1985-11-20 1987-07-07 Seagate Technology Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor
GB2187031B (en) * 1986-01-21 1990-10-17 Raymond Engineering Magnetic disc memory unit
GB2229852B (en) * 1986-01-21 1991-01-23 Raymond Engineering Magnetic disc memory unit
JPS62293572A (en) * 1986-06-12 1987-12-21 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Memory
EP0332058A1 (en) * 1988-03-07 1989-09-13 Siemens Aktiengesellschaft Switching device for automatically retracting a data memory positioning device into a home position
WO1990005359A1 (en) * 1988-11-10 1990-05-17 Conner Peripherals, Inc. Magnetic parking device for disk drive
JPH0685264B2 (en) * 1988-11-30 1994-10-26 富士通株式会社 Drive circuit for motor for moving magnetic head carrier of magnetic disk device
US5303101A (en) * 1992-03-10 1994-04-12 Nec Corporation Active magnetic latch for disk drive and method
KR100295029B1 (en) * 1992-11-17 2001-10-24 요트.게.아. 롤페즈 Motor driving circuit
US5384524A (en) * 1993-09-02 1995-01-24 Cirrus Logic, Inc. Voice coil motor control circuit and method for servo system control in a computer mass storage device
JP2642069B2 (en) * 1993-12-28 1997-08-20 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 Actuator retract method and magnetic disk drive
US5486957A (en) * 1994-06-01 1996-01-23 International Business Machines Corporation Disk drive with rectifier circuit for parking the head carriers on power down
US5729399A (en) * 1995-12-13 1998-03-17 International Business Machines Corporation Contact start/stop disk drive with minimized head-disk wear in textured landing zone
US6639749B1 (en) 1999-01-21 2003-10-28 Seagate Technology Llc Supplying power from a spindle motor in a disc drive system
JP3966534B2 (en) * 2000-04-24 2007-08-29 パイオニア株式会社 Recording / playback device
JP3937064B2 (en) * 2000-04-24 2007-06-27 パイオニア株式会社 Recording / playback device
US6859340B2 (en) 2001-03-09 2005-02-22 Seagate Technology Llc Method and device for retracting an actuator
JP2002298530A (en) * 2001-03-30 2002-10-11 Toshiba Corp Method for retracting head at power cut-off time, and magnetic disk unit
CN111883184A (en) * 2020-07-02 2020-11-03 唐敏敏 Hard disk auxiliary protection magnetic head equipment for computer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1947574C3 (en) * 1969-09-19 1974-03-14 Siemens Ag, 1000 Berlin U. 8000 Muenchen Arrangement for supplying power to the positioning device and for braking the disk stack in a disk storage
US3629679A (en) * 1970-06-29 1971-12-21 Information Storage Systems Linear motor power failure detection circuit and fail-safe control
BE791362A (en) * 1971-11-15 1973-05-14 Xerox Corp HEAD CHARGING DEVICES FOR DISK DISK TRAINING UNIT
US4237501A (en) * 1978-07-25 1980-12-02 Pertec Computer Corporation Emergency head unload system for magnetic disk drive
JPS586560A (en) * 1981-06-30 1983-01-14 Fujitsu Ltd Magnetic disk device
US4371903A (en) * 1981-09-28 1983-02-01 Dma Systems Corporation Emergency head retract system for magnetic disc drives

Also Published As

Publication number Publication date
DE3317048A1 (en) 1983-12-08
JPS58218084A (en) 1983-12-19
FR2528213A1 (en) 1983-12-09
FR2528213B1 (en) 1987-12-18
GB2121589A (en) 1983-12-21
GB2121589B (en) 1986-06-11

Similar Documents

Publication Publication Date Title
GB2121589B (en) Magnetic disk drive emergency head retract system
DE3271987D1 (en) Emergency magnetic head retract system
GB2130425B (en) Magnetic transducer head assemblies
KR910003198B1 (en) Magnetic disc drive system
DE3370392D1 (en) Magnetic read head
DE3371831D1 (en) Disk drive
DE3278300D1 (en) Magnetic transducer head
GB8301049D0 (en) Multichannel magnetic head
AU1547083A (en) Head for magnetic disk
GB8302247D0 (en) Magnetic head
DE3479693D1 (en) Magnetic head for perpendicular magnetic recording system
GB8303546D0 (en) Magnetic head
KR920004769B1 (en) Magnetic tape system having command pretetching means
GB8333516D0 (en) Magnetic head
GB2026208B (en) Emergency head unload system for magnetic disc drive
GB8300230D0 (en) Multi-track magnetic head
GB8325453D0 (en) Magnetic disc drive system
DE3362989D1 (en) Magnetic head
GB2123349B (en) Recording head
GB8509829D0 (en) Magnetic recording system
GB8326285D0 (en) Magnetic head assembly for tape recorders
DE3375435D1 (en) Magnetic head
GB8334008D0 (en) Magnetic head
GB8707365D0 (en) Rotary voice coil microhard disk drive system
IE822201L (en) Emergency head retract system for magnetic disc drive

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee