GB8312591D0 - Magnetic disk drive emergency head retract system - Google Patents
Magnetic disk drive emergency head retract systemInfo
- 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
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
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)
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 |
DE3701635A1 (en) * | 1986-01-21 | 1987-09-10 | Raymond Engineering | MAGNETIC DISK STORAGE |
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 |
JP2759137B2 (en) * | 1988-11-10 | 1998-05-28 | シーゲイト テクノロジー インコーポレーテッド | Magnetic holding 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)
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 |
-
1983
- 1983-04-29 FR FR8307138A patent/FR2528213B1/en not_active Expired
- 1983-05-06 GB GB08312591A patent/GB2121589B/en not_active Expired
- 1983-05-10 DE DE19833317048 patent/DE3317048A1/en not_active Withdrawn
- 1983-05-30 JP JP9422683A patent/JPS58218084A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB2121589A (en) | 1983-12-21 |
JPS58218084A (en) | 1983-12-19 |
FR2528213B1 (en) | 1987-12-18 |
DE3317048A1 (en) | 1983-12-08 |
GB2121589B (en) | 1986-06-11 |
FR2528213A1 (en) | 1983-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |