USRE32075E - Data transducer position control system for rotating disk data storage equipment - Google Patents
Data transducer position control system for rotating disk data storage equipment Download PDFInfo
- Publication number
- USRE32075E USRE32075E US06/596,438 US59643884A USRE32075E US RE32075 E USRE32075 E US RE32075E US 59643884 A US59643884 A US 59643884A US RE32075 E USRE32075 E US RE32075E
- Authority
- US
- United States
- Prior art keywords
- track
- data
- head
- servo
- transducer
- 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 - Lifetime
Links
- 238000013500 data storage Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000004044 response Effects 0.000 claims description 25
- 230000001419 dependent effect Effects 0.000 claims description 20
- 230000001133 acceleration Effects 0.000 claims description 18
- 239000003550 marker Substances 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 9
- 230000002441 reversible effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 12
- 230000006872 improvement Effects 0.000 claims 7
- 230000000087 stabilizing effect Effects 0.000 claims 6
- 238000012935 Averaging Methods 0.000 claims 4
- 230000001105 regulatory effect Effects 0.000 claims 4
- 230000006641 stabilisation Effects 0.000 claims 4
- 238000011105 stabilization Methods 0.000 claims 4
- 230000001737 promoting effect Effects 0.000 claims 3
- 230000007480 spreading Effects 0.000 claims 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004382 potting Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- YTCQFLFGFXZUSN-BAQGIRSFSA-N microline Chemical compound OC12OC3(C)COC2(O)C(C(/Cl)=C/C)=CC(=O)C21C3C2 YTCQFLFGFXZUSN-BAQGIRSFSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- G11B5/48—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
- G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
- G11B5/5556—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means with track following after a "seek"
-
- 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
- G11B21/08—Track changing or selecting during transducing operation
-
- 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
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
- G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
-
- 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
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
- G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
-
- 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
Abstract
Description
Claims (30)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/596,438 USRE32075E (en) | 1980-09-24 | 1984-04-03 | Data transducer position control system for rotating disk data storage equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/190,198 US4396959A (en) | 1980-09-24 | 1980-09-24 | Data transducer position control system for rotating disk data storage equipment |
US06/596,438 USRE32075E (en) | 1980-09-24 | 1984-04-03 | Data transducer position control system for rotating disk data storage equipment |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/190,198 Reissue US4396959A (en) | 1980-09-24 | 1980-09-24 | Data transducer position control system for rotating disk data storage equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE32075E true USRE32075E (en) | 1986-01-28 |
Family
ID=26885867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/596,438 Expired - Lifetime USRE32075E (en) | 1980-09-24 | 1984-04-03 | Data transducer position control system for rotating disk data storage equipment |
Country Status (1)
Country | Link |
---|---|
US (1) | USRE32075E (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4831315A (en) | 1986-04-04 | 1989-05-16 | Data Recording Instrument Company Limited | Transducer positioning apparatus with multiple modes of motion |
WO1989008917A1 (en) * | 1988-03-07 | 1989-09-21 | Syquest Technology | Disc drive fine servo velocity control and method for head positioning relative to a disc |
US4912585A (en) * | 1988-04-28 | 1990-03-27 | International Business Machines Corporation | Discrete track thin film magnetic recording disk with embedded servo information |
US4974109A (en) * | 1986-08-27 | 1990-11-27 | Sony Corporation | Hard disk drive employing a reference track to compensate for tracking error |
US4988933A (en) * | 1988-05-31 | 1991-01-29 | Kabushiki Kaisha Toshiba | Head driving circuit |
US5164867A (en) * | 1989-05-10 | 1992-11-17 | Victor Company Of Japan, Ltd. | Magnetic disk storage and a method for accessing a track in a magnetic disk storage |
US5179485A (en) * | 1989-01-11 | 1993-01-12 | Sony Corporation | Optical encoder for disc apparatus |
US5307218A (en) * | 1987-03-31 | 1994-04-26 | Kabushiki Kaisha Toshiba | Magnetic disk apparatus using both servo-surface servo and data-surface servo |
US5317241A (en) * | 1986-11-29 | 1994-05-31 | Papst Licensing Gmbh | Rotary drive for a data carrier |
US5412809A (en) * | 1992-11-12 | 1995-05-02 | Mitsumi Electric Co., Ltd. | Disk drive power control circuit and method |
US5424885A (en) * | 1993-01-11 | 1995-06-13 | Seagate Technology, Inc. | Method for following data tracks in a disc drive using an improved thermal calibration method |
US5459359A (en) * | 1992-04-30 | 1995-10-17 | Hitachi Metals, Ltd. | Swing-type actuator |
US5491395A (en) * | 1993-09-17 | 1996-02-13 | Maxtor Corporation | TUT servo IC architecture |
USRE35302E (en) | 1986-08-27 | 1996-07-23 | Sony Corporation | Magnetic disc apparatus |
US5555139A (en) * | 1986-11-10 | 1996-09-10 | Seagate Technology, Inc. | Dual track servo system with position interpolation |
US5576583A (en) * | 1992-04-30 | 1996-11-19 | Hitachi Metals, Ltd. | Swing-type actuator |
US5581422A (en) * | 1993-02-09 | 1996-12-03 | Hitachi Metals, Ltd. | Actuator with moveable coil and recording apparatus |
USRE38178E1 (en) | 1980-05-10 | 2003-07-08 | Papst Licensing Gmbh & Co. Kg | Disk storage device having an underhub spindle motor |
USRE38601E1 (en) | 1980-05-10 | 2004-09-28 | Papst Licensing, GmbH & Co. KG | Disk storage device having a radial magnetic yoke feature |
USRE38662E1 (en) | 1980-05-10 | 2004-11-30 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a sealed bearing tube |
USRE38673E1 (en) | 1980-05-10 | 2004-12-21 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a hub sealing member feature |
USRE38772E1 (en) | 1981-03-18 | 2005-08-09 | Papst Licensing Gmbh & Co. Kg | Disk storage device having an undercut hub member |
Citations (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185972A (en) * | 1961-10-10 | 1965-05-25 | Ibm | Transducer positioning system utilizing record with interspersed data and positioning information |
US3691543A (en) * | 1971-02-08 | 1972-09-12 | Ibm | Positioning system including servo track configuration and associated demodulator |
US3737883A (en) * | 1971-08-18 | 1973-06-05 | Information Storage Systems | Linear positioning apparatus for memory disc pack drive mechanisms |
US3812533A (en) * | 1972-12-22 | 1974-05-21 | Vermont Res Corp | Information storage unit transducer positioning system |
US3838453A (en) * | 1972-05-18 | 1974-09-24 | Ibm | Track following system for magnetic tape recorder |
US3864741A (en) * | 1973-06-28 | 1975-02-04 | Ibm | Servo channel equalization network |
JPS5181603A (en) * | 1975-01-14 | 1976-07-17 | Nippon Electric Co | JIKIDEISUKUSOCHI |
US4006394A (en) * | 1972-08-21 | 1977-02-01 | Information Storage Systems, Inc. | Coarse and fine control for position servo |
US4016603A (en) * | 1975-05-30 | 1977-04-05 | International Business Machines Corporation | Disk storage apparatus having signals recorded in a specific format |
US4030132A (en) * | 1975-03-27 | 1977-06-14 | Memorex Corporation | Dual mode velocity servo control for a linear actuator motor |
US4032984A (en) * | 1975-04-28 | 1977-06-28 | Burroughs Corporation | Transducer positioning system for providing both coarse and fine positioning |
US4048660A (en) * | 1975-12-23 | 1977-09-13 | International Business Machines Corporation | Record track following and seeking |
US4056830A (en) * | 1974-03-15 | 1977-11-01 | Burroughs Corporation | Utilizing data for transducer positioning |
US4084201A (en) * | 1975-12-02 | 1978-04-11 | Basf Aktiengesellschaft | Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control |
US4096534A (en) * | 1977-04-12 | 1978-06-20 | International Business Machines Corporation | Track accessing circuitry for a disk file with switchable filter |
US4103314A (en) * | 1976-06-30 | 1978-07-25 | International Business Machines Corporation | Motion control system |
US4135217A (en) * | 1976-11-02 | 1979-01-16 | Xerox Corporation | Utilization of stored run-out information in a track following servo system |
US4188646A (en) * | 1978-05-30 | 1980-02-12 | Sperry Rand Corporation | Sectorized data path following servo system |
US4194226A (en) * | 1978-04-24 | 1980-03-18 | Data General Corporation | Rigid magnetic disc memory apparatus including open loop stepper-motor-driven read/write head |
US4195320A (en) * | 1978-05-15 | 1980-03-25 | International Business Machines Corporation | Record track identification and following |
US4217612A (en) * | 1977-12-30 | 1980-08-12 | International Business Machines Corporation | Servo system for track accessing and track following in a disk drive |
US4224514A (en) * | 1978-06-16 | 1980-09-23 | Sensor Technology, Inc. | Optical encoder |
US4237502A (en) * | 1979-07-10 | 1980-12-02 | Per Sci, Inc. | Disk drive system |
US4238809A (en) * | 1978-03-09 | 1980-12-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Servo track configuration for magnetic disk apparatus |
US4257074A (en) * | 1979-06-15 | 1981-03-17 | Magnetic Peripherals Inc. | Time optimal function generator for disk file magnetic recording head servo position control loop |
US4272793A (en) * | 1979-06-04 | 1981-06-09 | Texas Instruments Incorporated | System and method for positioning a magnetic head transducer on a flexible storage media |
US4285015A (en) * | 1979-12-10 | 1981-08-18 | Sperry Corporation | Method and apparatus for locating a movable servo controlled member during position signal drop-out |
US4297737A (en) * | 1979-12-26 | 1981-10-27 | International Business Machines Corporation | Sector servo with sync marks |
US4297734A (en) * | 1978-12-27 | 1981-10-27 | International Business Machines Corporation | Sampled data servo positioning system |
US4309730A (en) * | 1978-12-19 | 1982-01-05 | U.S. Philips Corporation | Method of reading and/or writing information and apparatus for carrying out the method |
US4314291A (en) * | 1978-11-08 | 1982-02-02 | Tokyo Shibaura Denki Kabushiki Kaisha | Self-compensating device for a magnetic disc apparatus |
US4333117A (en) * | 1980-06-30 | 1982-06-01 | Magnetic Peripherals Inc. | Disc head arm position controller using digital velocity sensing |
US4346413A (en) * | 1979-07-13 | 1982-08-24 | Basf Aktiengesellschaft | Magnetic head positioning servo arrangement for a system for recording/reproducing information on a magnetic recording medium, particularly on a flexible magnetic recording medium |
US4348703A (en) * | 1979-05-06 | 1982-09-07 | Budapesti Radiotechnikai Gyar | Flexible magnetic disc having track marking information recorded thereon |
US4352131A (en) * | 1980-02-29 | 1982-09-28 | U.S. Philips Corporation | Memory disc addressing device |
US4371904A (en) * | 1980-08-22 | 1983-02-01 | Pertec Computer Corporation | Flexible magnetic disk system |
US4390912A (en) * | 1980-11-12 | 1983-06-28 | Digital Equipment Corporation | Transducer positioning system and data disk therefor |
US4396960A (en) * | 1980-03-13 | 1983-08-02 | International Business Machines Corporation | Servo track following control for magnetic heads, and method for compensating uniform disturbance variables |
-
1984
- 1984-04-03 US US06/596,438 patent/USRE32075E/en not_active Expired - Lifetime
Patent Citations (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185972A (en) * | 1961-10-10 | 1965-05-25 | Ibm | Transducer positioning system utilizing record with interspersed data and positioning information |
US3691543A (en) * | 1971-02-08 | 1972-09-12 | Ibm | Positioning system including servo track configuration and associated demodulator |
US3737883A (en) * | 1971-08-18 | 1973-06-05 | Information Storage Systems | Linear positioning apparatus for memory disc pack drive mechanisms |
US3838453A (en) * | 1972-05-18 | 1974-09-24 | Ibm | Track following system for magnetic tape recorder |
US4006394A (en) * | 1972-08-21 | 1977-02-01 | Information Storage Systems, Inc. | Coarse and fine control for position servo |
US3812533A (en) * | 1972-12-22 | 1974-05-21 | Vermont Res Corp | Information storage unit transducer positioning system |
US3864741A (en) * | 1973-06-28 | 1975-02-04 | Ibm | Servo channel equalization network |
US4056830A (en) * | 1974-03-15 | 1977-11-01 | Burroughs Corporation | Utilizing data for transducer positioning |
JPS5181603A (en) * | 1975-01-14 | 1976-07-17 | Nippon Electric Co | JIKIDEISUKUSOCHI |
US4030132A (en) * | 1975-03-27 | 1977-06-14 | Memorex Corporation | Dual mode velocity servo control for a linear actuator motor |
US4032984A (en) * | 1975-04-28 | 1977-06-28 | Burroughs Corporation | Transducer positioning system for providing both coarse and fine positioning |
US4016603A (en) * | 1975-05-30 | 1977-04-05 | International Business Machines Corporation | Disk storage apparatus having signals recorded in a specific format |
US4084201A (en) * | 1975-12-02 | 1978-04-11 | Basf Aktiengesellschaft | Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control |
US4048660A (en) * | 1975-12-23 | 1977-09-13 | International Business Machines Corporation | Record track following and seeking |
US4103314A (en) * | 1976-06-30 | 1978-07-25 | International Business Machines Corporation | Motion control system |
US4135217A (en) * | 1976-11-02 | 1979-01-16 | Xerox Corporation | Utilization of stored run-out information in a track following servo system |
US4096534A (en) * | 1977-04-12 | 1978-06-20 | International Business Machines Corporation | Track accessing circuitry for a disk file with switchable filter |
US4217612A (en) * | 1977-12-30 | 1980-08-12 | International Business Machines Corporation | Servo system for track accessing and track following in a disk drive |
US4238809A (en) * | 1978-03-09 | 1980-12-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Servo track configuration for magnetic disk apparatus |
US4194226A (en) * | 1978-04-24 | 1980-03-18 | Data General Corporation | Rigid magnetic disc memory apparatus including open loop stepper-motor-driven read/write head |
US4195320A (en) * | 1978-05-15 | 1980-03-25 | International Business Machines Corporation | Record track identification and following |
US4188646A (en) * | 1978-05-30 | 1980-02-12 | Sperry Rand Corporation | Sectorized data path following servo system |
US4224514A (en) * | 1978-06-16 | 1980-09-23 | Sensor Technology, Inc. | Optical encoder |
US4314291A (en) * | 1978-11-08 | 1982-02-02 | Tokyo Shibaura Denki Kabushiki Kaisha | Self-compensating device for a magnetic disc apparatus |
US4309730A (en) * | 1978-12-19 | 1982-01-05 | U.S. Philips Corporation | Method of reading and/or writing information and apparatus for carrying out the method |
US4297734A (en) * | 1978-12-27 | 1981-10-27 | International Business Machines Corporation | Sampled data servo positioning system |
US4348703A (en) * | 1979-05-06 | 1982-09-07 | Budapesti Radiotechnikai Gyar | Flexible magnetic disc having track marking information recorded thereon |
US4272793A (en) * | 1979-06-04 | 1981-06-09 | Texas Instruments Incorporated | System and method for positioning a magnetic head transducer on a flexible storage media |
US4257074A (en) * | 1979-06-15 | 1981-03-17 | Magnetic Peripherals Inc. | Time optimal function generator for disk file magnetic recording head servo position control loop |
US4237502A (en) * | 1979-07-10 | 1980-12-02 | Per Sci, Inc. | Disk drive system |
US4346413A (en) * | 1979-07-13 | 1982-08-24 | Basf Aktiengesellschaft | Magnetic head positioning servo arrangement for a system for recording/reproducing information on a magnetic recording medium, particularly on a flexible magnetic recording medium |
US4285015A (en) * | 1979-12-10 | 1981-08-18 | Sperry Corporation | Method and apparatus for locating a movable servo controlled member during position signal drop-out |
US4297737A (en) * | 1979-12-26 | 1981-10-27 | International Business Machines Corporation | Sector servo with sync marks |
US4352131A (en) * | 1980-02-29 | 1982-09-28 | U.S. Philips Corporation | Memory disc addressing device |
US4396960A (en) * | 1980-03-13 | 1983-08-02 | International Business Machines Corporation | Servo track following control for magnetic heads, and method for compensating uniform disturbance variables |
US4333117A (en) * | 1980-06-30 | 1982-06-01 | Magnetic Peripherals Inc. | Disc head arm position controller using digital velocity sensing |
US4371904A (en) * | 1980-08-22 | 1983-02-01 | Pertec Computer Corporation | Flexible magnetic disk system |
US4390912A (en) * | 1980-11-12 | 1983-06-28 | Digital Equipment Corporation | Transducer positioning system and data disk therefor |
Non-Patent Citations (12)
Title |
---|
"Improvement in the Position Error Signal Detector Channel for a `Buried Servo` Recording System" IBM Technical Disclosure Bulletin, vol. 23, No. 3, Aug. 30, pp. 1203-1210-C. Handen. |
"Servo Control Technique Enhances Performance of Disc Storage Units" by Terry W. Wright, Computer Design, (vol. 16, No. 3 Mar. 1977, pp. 99-103). |
"Track Following and Seeking System" IBM Technical Disclosure Bulletin, vol. 13, No. 11, Apr. 71, pp. 3433-3434-C. A. Walton. |
"Track Servo System" IBM Technical Disclosure Bulletin, vol. 16, No. 7, Dec. 73, pp. 2225-2226-L. F. Shew. |
H. P. Stickel, "New 50-Megabyte Disk Drive: High Performance and Reliability from High Technology Design", Aug. 77 Hewlett Packard Journal, pp. 2-15. |
H. P. Stickel, New 50 Megabyte Disk Drive: High Performance and Reliability from High Technology Design , Aug. 77 Hewlett Packard Journal, pp. 2 15. * |
Improvement in the Position Error Signal Detector Channel for a Buried Servo Recording System IBM Technical Disclosure Bulletin, vol. 23, No. 3, Aug. 30, pp. 1203 1210 C. Handen. * |
Servo Control Technique Enhances Performance of Disc Storage Units by Terry W. Wright, Computer Design, (vol. 16, No. 3 Mar. 1977, pp. 99 103). * |
Shugart Associates, "8-Inch Fixed Disk Drive", Two page product bulletin dated 9/79. |
Shugart Associates, 8 Inch Fixed Disk Drive , Two page product bulletin dated 9/79. * |
Track Following and Seeking System IBM Technical Disclosure Bulletin, vol. 13, No. 11, Apr. 71, pp. 3433 3434 C. A. Walton. * |
Track Servo System IBM Technical Disclosure Bulletin, vol. 16, No. 7, Dec. 73, pp. 2225 2226 L. F. Shew. * |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE38662E1 (en) | 1980-05-10 | 2004-11-30 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a sealed bearing tube |
USRE38178E1 (en) | 1980-05-10 | 2003-07-08 | Papst Licensing Gmbh & Co. Kg | Disk storage device having an underhub spindle motor |
USRE38179E1 (en) | 1980-05-10 | 2003-07-08 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a three-phase brushless DC underhub configured spindle motor |
USRE38601E1 (en) | 1980-05-10 | 2004-09-28 | Papst Licensing, GmbH & Co. KG | Disk storage device having a radial magnetic yoke feature |
USRE38673E1 (en) | 1980-05-10 | 2004-12-21 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a hub sealing member feature |
USRE38772E1 (en) | 1981-03-18 | 2005-08-09 | Papst Licensing Gmbh & Co. Kg | Disk storage device having an undercut hub member |
US4831315A (en) | 1986-04-04 | 1989-05-16 | Data Recording Instrument Company Limited | Transducer positioning apparatus with multiple modes of motion |
US4974109A (en) * | 1986-08-27 | 1990-11-27 | Sony Corporation | Hard disk drive employing a reference track to compensate for tracking error |
USRE35302E (en) | 1986-08-27 | 1996-07-23 | Sony Corporation | Magnetic disc apparatus |
US5555139A (en) * | 1986-11-10 | 1996-09-10 | Seagate Technology, Inc. | Dual track servo system with position interpolation |
USRE38264E1 (en) | 1986-11-29 | 2003-10-07 | Papst Licensing Gmbh & Co. Kg | Rotary drive for a data carrier |
US5317241A (en) * | 1986-11-29 | 1994-05-31 | Papst Licensing Gmbh | Rotary drive for a data carrier |
USRE37825E1 (en) | 1986-11-29 | 2002-09-03 | Papst Licensing Gmbh & Co. Kg | Data storage device having a drive mechanism for rotating a data storage medium |
US5307218A (en) * | 1987-03-31 | 1994-04-26 | Kabushiki Kaisha Toshiba | Magnetic disk apparatus using both servo-surface servo and data-surface servo |
WO1989008917A1 (en) * | 1988-03-07 | 1989-09-21 | Syquest Technology | Disc drive fine servo velocity control and method for head positioning relative to a disc |
US4912585A (en) * | 1988-04-28 | 1990-03-27 | International Business Machines Corporation | Discrete track thin film magnetic recording disk with embedded servo information |
US4988933A (en) * | 1988-05-31 | 1991-01-29 | Kabushiki Kaisha Toshiba | Head driving circuit |
US5179485A (en) * | 1989-01-11 | 1993-01-12 | Sony Corporation | Optical encoder for disc apparatus |
US5164867A (en) * | 1989-05-10 | 1992-11-17 | Victor Company Of Japan, Ltd. | Magnetic disk storage and a method for accessing a track in a magnetic disk storage |
US5576583A (en) * | 1992-04-30 | 1996-11-19 | Hitachi Metals, Ltd. | Swing-type actuator |
US5459359A (en) * | 1992-04-30 | 1995-10-17 | Hitachi Metals, Ltd. | Swing-type actuator |
US5412809A (en) * | 1992-11-12 | 1995-05-02 | Mitsumi Electric Co., Ltd. | Disk drive power control circuit and method |
US5424885A (en) * | 1993-01-11 | 1995-06-13 | Seagate Technology, Inc. | Method for following data tracks in a disc drive using an improved thermal calibration method |
US5581422A (en) * | 1993-02-09 | 1996-12-03 | Hitachi Metals, Ltd. | Actuator with moveable coil and recording apparatus |
US5491395A (en) * | 1993-09-17 | 1996-02-13 | Maxtor Corporation | TUT servo IC architecture |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4396959A (en) | Data transducer position control system for rotating disk data storage equipment | |
USRE32075E (en) | Data transducer position control system for rotating disk data storage equipment | |
US4660106A (en) | Data transducer position control system for rotating disk data storage equipment | |
US4814909A (en) | Data transducer position control system for rotating disk data storage equipment | |
US4920434A (en) | Fixed disk drive | |
US4490635A (en) | Pure torque, limited displacement transducer | |
US4516177A (en) | Rotating rigid disk data storage device | |
US5262907A (en) | Hard disc drive with improved servo system | |
US4419701A (en) | Data transducer position control system for rotating disk data storage equipment | |
US4967293A (en) | Multi-positioner magnetic disk storage apparatus having means for reducing mechanical vibration interference between positioners | |
US4775903A (en) | Sampled servo seek and track follow system for a magnetic disc drive | |
US5084791A (en) | Head position control system for fixed drive including position encoder, temperature sensor and embedded fine servo information | |
US4831470A (en) | Method and apparatus for recording disk servo information with detachable position decoder | |
US4924160A (en) | Staggered seeking method for disk drive sector servo | |
US5172282A (en) | Single motor data storage device utilizing centrifugal force and counteracting spring | |
US4168457A (en) | Self adaptive speed control system | |
US4321517A (en) | Resonance suppression method | |
US5023733A (en) | Head positioning control for a spindle motor disk drive | |
US5196970A (en) | Magnetic disc apparatus | |
US4982296A (en) | Head and disk assembly for fixed disk drive | |
US5270886A (en) | Two motor servo system for a removable disk drive | |
US5305159A (en) | Magnetic disk apparatus | |
JPH0223947B2 (en) | ||
US4700244A (en) | Process and system for compensating for information shifts on disc storage media | |
EP0247339B1 (en) | Servo gain compensation in a disc drive |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: QUANTUM CORPORATION, 1804 MCCARTHY BOULEVAED, MILP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:QUANTUM CORPORATION, A CA CORP.;REEL/FRAME:004740/0319 Effective date: 19870714 Owner name: QUANTUM CORPORATION,CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:QUANTUM CORPORATION, A CA CORP.;REEL/FRAME:004740/0319 Effective date: 19870714 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, AS ADMINIST Free format text: SECURITY INTEREST;ASSIGNOR:QUANTUM CORPORATION;REEL/FRAME:007152/0815 Effective date: 19941003 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK, AS ADMINISTRATIVE AGENT, N Free format text: RELEASE;ASSIGNOR:QUANTUM CORPORATION;REEL/FRAME:008744/0904 Effective date: 19970818 |
|
AS | Assignment |
Owner name: MAXTOR CORPORATION, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:QUANTUM CORPORATION;REEL/FRAME:012653/0726 Effective date: 20010724 |