GB2187031B - Magnetic disc memory unit - Google Patents
Magnetic disc memory unitInfo
- 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
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
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)
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)
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)
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 |
-
1987
- 1987-01-21 DE DE19873701635 patent/DE3701635A1/de not_active Withdrawn
- 1987-01-21 FR FR8700640A patent/FR2593318B1/fr not_active Expired - Fee Related
- 1987-01-21 GB GB8701250A patent/GB2187031B/en not_active Expired - Fee Related
Patent Citations (7)
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 |