AU525976B2 - Emergency head unload system for magnetic disk drive - Google Patents

Emergency head unload system for magnetic disk drive

Info

Publication number
AU525976B2
AU525976B2 AU48873/79A AU4887379A AU525976B2 AU 525976 B2 AU525976 B2 AU 525976B2 AU 48873/79 A AU48873/79 A AU 48873/79A AU 4887379 A AU4887379 A AU 4887379A AU 525976 B2 AU525976 B2 AU 525976B2
Authority
AU
Australia
Prior art keywords
disk drive
magnetic disk
unload system
head unload
emergency head
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.)
Ceased
Application number
AU48873/79A
Other versions
AU4887379A (en
Inventor
Evan Leslie Barmache
Abraham Brand
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.)
PERTEC COMPUTER CORP
Original Assignee
PERTEC COMPUTER 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 PERTEC COMPUTER CORP filed Critical PERTEC COMPUTER CORP
Publication of AU4887379A publication Critical patent/AU4887379A/en
Application granted granted Critical
Publication of AU525976B2 publication Critical patent/AU525976B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/40—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
    • 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
AU48873/79A 1978-07-25 1979-07-12 Emergency head unload system for magnetic disk drive Ceased AU525976B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92776378A 1978-07-25 1978-07-25
US927763 1978-07-25

Publications (2)

Publication Number Publication Date
AU4887379A AU4887379A (en) 1980-02-07
AU525976B2 true AU525976B2 (en) 1982-12-09

Family

ID=25455217

Family Applications (1)

Application Number Title Priority Date Filing Date
AU48873/79A Ceased AU525976B2 (en) 1978-07-25 1979-07-12 Emergency head unload system for magnetic disk drive

Country Status (3)

Country Link
AU (1) AU525976B2 (en)
CA (1) CA1127755A (en)
GB (1) GB2026208B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5455723A (en) * 1994-06-02 1995-10-03 International Business Machines Corporation Method and apparatus for ramp load and unload
US5633767A (en) * 1995-06-06 1997-05-27 International Business Machines Corporation Adaptive and in-situ load/unload damage estimation and compensation
JP3937064B2 (en) * 2000-04-24 2007-06-27 パイオニア株式会社 Recording / playback device
JP3966534B2 (en) * 2000-04-24 2007-08-29 パイオニア株式会社 Recording / playback device
JP2002298530A (en) * 2001-03-30 2002-10-11 Toshiba Corp Method for retracting head at power cut-off time, and magnetic disk unit
JP4226998B2 (en) * 2003-11-20 2009-02-18 株式会社東芝 Disk storage

Also Published As

Publication number Publication date
GB2026208A (en) 1980-01-30
CA1127755A (en) 1982-07-13
AU4887379A (en) 1980-02-07
GB2026208B (en) 1982-09-29

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