GB2187031B - Magnetic disc memory unit - Google Patents

Magnetic disc memory unit

Info

Publication number
GB2187031B
GB2187031B GB8701250A GB8701250A GB2187031B GB 2187031 B GB2187031 B GB 2187031B GB 8701250 A GB8701250 A GB 8701250A GB 8701250 A GB8701250 A GB 8701250A GB 2187031 B GB2187031 B GB 2187031B
Authority
GB
United Kingdom
Prior art keywords
memory unit
magnetic disc
disc memory
magnetic
unit
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
GB8701250A
Other languages
English (en)
Other versions
GB2187031A (en
GB8701250D0 (en
Inventor
James A Augeri
Carl Bolz
Bruce Bickford
Paul Young
David Johnson
David W Richard
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.)
Raymond Engineering Inc
Original Assignee
Raymond Engineering Inc
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 Raymond Engineering Inc filed Critical Raymond Engineering Inc
Publication of GB8701250D0 publication Critical patent/GB8701250D0/en
Publication of GB2187031A publication Critical patent/GB2187031A/en
Priority to GB9008950A priority Critical patent/GB2229852B/en
Application granted granted Critical
Publication of GB2187031B publication Critical patent/GB2187031B/en
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
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1406—Reducing the influence of the 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1493—Electro-Magnetic Interference [EMI] or Radio Frequency Interference [RFI] shielding; grounding of static charges
GB8701250A 1986-01-21 1987-01-21 Magnetic disc memory unit Expired - Fee Related GB2187031B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9008950A GB2229852B (en) 1986-01-21 1990-04-20 Magnetic disc memory unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82110186A 1986-01-21 1986-01-21
US94182086A 1986-12-15 1986-12-15

Publications (3)

Publication Number Publication Date
GB8701250D0 GB8701250D0 (en) 1987-02-25
GB2187031A GB2187031A (en) 1987-08-26
GB2187031B true GB2187031B (en) 1990-10-17

Family

ID=27124513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8701250A Expired - Fee Related GB2187031B (en) 1986-01-21 1987-01-21 Magnetic disc memory unit

Country Status (3)

Country Link
DE (1) DE3701635A1 (de)
FR (1) FR2593318B1 (de)
GB (1) GB2187031B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831469A (en) * 1987-07-29 1989-05-16 International Business Machines Corporation Disk drive head retract and motor braking method and apparatus
GB2235330A (en) * 1989-06-20 1991-02-27 Tokico Ltd Magnetic disc apparatus
USRE38390E1 (en) 1989-10-06 2004-01-20 Mitsubishi Denki Kabushiki Kaisha Read/write head retract mechanism
JPH0731891B2 (ja) * 1989-10-06 1995-04-10 三菱電機株式会社 磁気ディスク装置
JP2706329B2 (ja) * 1989-10-06 1998-01-28 三菱電機株式会社 記録・再生ヘッドのロード・アンロード機構
US5227929A (en) * 1990-11-26 1993-07-13 International Business Machines Corporation Portable computer hard disk protective reflex system
JPH04200248A (ja) * 1990-11-29 1992-07-21 Mitsubishi Electric Corp ディスク装置
DE69428670T2 (de) * 1994-01-28 2002-07-11 International Business Machines Corp., Armonk Aufprallvermeidungsschockring zum Schutz von Plattenantriebsmotorlagerungen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1359511A (en) * 1970-06-29 1974-07-10 Information Storage Systems Control circuit arrangement for an actuator
GB2000893A (en) * 1977-07-07 1979-01-17 Basf Ag Device for the automatic loading/unloading of at least one magnetic head in a magnetic disc drive
WO1983001143A1 (en) * 1981-09-28 1983-03-31 Dma Systems Corp Emergency magnetic head retract system
GB2121589A (en) * 1982-06-03 1983-12-21 Tandon Corp Magnetic disk drive emergency head retract system
EP0108500A1 (de) * 1982-11-04 1984-05-16 Amcodyne Inc. Gerät zur Positionierung eines Wandlers relativ zu einer Magnetplatte
WO1985002483A1 (en) * 1983-11-29 1985-06-06 Dma Systems Corporation Head loading/unloading apparatus for magnetic disc systems
EP0204299A2 (de) * 1985-06-04 1986-12-10 Plus Development Corporation Modul-Plattenspeicher-Untersystem

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713121A (en) * 1970-05-25 1973-01-23 Ibm Arm vibration damper
GB1342495A (en) * 1971-03-13 1974-01-03 Ibm Transducer arms for magnetic disc recording and or reproducing apparatus
US4237501A (en) * 1978-07-25 1980-12-02 Pertec Computer Corporation Emergency head unload system for magnetic disk drive
DE3135385A1 (de) * 1980-03-05 1983-03-17 Papst-Motoren GmbH & Co KG, 7742 St Georgen Plattenspeicher
US4323939A (en) * 1980-04-11 1982-04-06 Shugart Technology Hard fixed disc drive assembly and read-write head actuator
BR8207980A (pt) * 1981-11-16 1983-10-04 Dma Systems Corp Motor linear e carro combinados
DE3404208A1 (de) * 1984-02-07 1985-08-08 Siemens AG, 1000 Berlin und 8000 München Magnetplattenspeicher mit in einem federnd ausgebildeten gehaeuse beidseitig gelagerten plattenstapel
DE3419814C1 (de) * 1984-05-26 1985-11-28 GMN Georg Müller Nürnberg GmbH, 8500 Nürnberg Motorspindel fuer Magnetplattenspeicher
US4556969A (en) * 1984-12-28 1985-12-03 International Business Machines Corporation Hermetically sealed disk file

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1359511A (en) * 1970-06-29 1974-07-10 Information Storage Systems Control circuit arrangement for an actuator
GB2000893A (en) * 1977-07-07 1979-01-17 Basf Ag Device for the automatic loading/unloading of at least one magnetic head in a magnetic disc drive
WO1983001143A1 (en) * 1981-09-28 1983-03-31 Dma Systems Corp Emergency magnetic head retract system
GB2121589A (en) * 1982-06-03 1983-12-21 Tandon Corp Magnetic disk drive emergency head retract system
EP0108500A1 (de) * 1982-11-04 1984-05-16 Amcodyne Inc. Gerät zur Positionierung eines Wandlers relativ zu einer Magnetplatte
WO1985002483A1 (en) * 1983-11-29 1985-06-06 Dma Systems Corporation Head loading/unloading apparatus for magnetic disc systems
EP0204299A2 (de) * 1985-06-04 1986-12-10 Plus Development Corporation Modul-Plattenspeicher-Untersystem

Also Published As

Publication number Publication date
GB2187031A (en) 1987-08-26
FR2593318B1 (fr) 1991-02-08
DE3701635A1 (de) 1987-09-10
GB8701250D0 (en) 1987-02-25
FR2593318A1 (fr) 1987-07-24

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Legal Events

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

Effective date: 19970121