DE3481954D1 - Spurnachlaufservosystem fuer plattenvorrichtungen mit hoher speicherdichte. - Google Patents
Spurnachlaufservosystem fuer plattenvorrichtungen mit hoher speicherdichte.Info
- Publication number
- DE3481954D1 DE3481954D1 DE8484307200T DE3481954T DE3481954D1 DE 3481954 D1 DE3481954 D1 DE 3481954D1 DE 8484307200 T DE8484307200 T DE 8484307200T DE 3481954 T DE3481954 T DE 3481954T DE 3481954 D1 DE3481954 D1 DE 3481954D1
- Authority
- DE
- Germany
- Prior art keywords
- disk devices
- storage density
- high storage
- reverse system
- track reverse
- 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
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- 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
- G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
- G11B5/59622—Gain control; Filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Position Or Direction (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/543,688 US4642541A (en) | 1983-10-20 | 1983-10-20 | Track following servo for higher density disk files |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3481954D1 true DE3481954D1 (de) | 1990-05-17 |
Family
ID=24169150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484307200T Expired - Fee Related DE3481954D1 (de) | 1983-10-20 | 1984-10-19 | Spurnachlaufservosystem fuer plattenvorrichtungen mit hoher speicherdichte. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4642541A (de) |
EP (1) | EP0139531B1 (de) |
JP (1) | JPS61500193A (de) |
AU (1) | AU574115B2 (de) |
CA (1) | CA1278377C (de) |
DE (1) | DE3481954D1 (de) |
IE (1) | IE55954B1 (de) |
WO (1) | WO1985001806A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07114559B2 (ja) * | 1987-09-19 | 1995-12-06 | 三菱電機株式会社 | 電力系統安定化装置 |
FR2621756A1 (fr) * | 1987-10-13 | 1989-04-14 | Labo Electronique Physique | Circuit formant un filtre actif r.c. pour application coupe-bande ou passe-tout |
US5079492A (en) * | 1988-03-29 | 1992-01-07 | Teijin Seiki Company Limited | Stability compensating circuit |
US5001579A (en) * | 1988-05-27 | 1991-03-19 | Eastman Kodak Company | Method and apparatus for centering a transducer over a recorded track on a rotary storage medium |
US4890172A (en) * | 1988-09-27 | 1989-12-26 | Digital Equipment Corporation | Automatic servo gain calibration system for a disk drive |
US5032776A (en) * | 1988-11-10 | 1991-07-16 | Unisys Corp. | Attenuation filter |
JPH0782023B2 (ja) * | 1990-03-19 | 1995-09-06 | ティアツク株式会社 | モータ速度検出装置 |
JPH07105122B2 (ja) * | 1990-05-08 | 1995-11-13 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | ヘッド位置制御方法および装置 |
US5151662A (en) * | 1991-06-24 | 1992-09-29 | Motorola, Inc. | Circuit and method of signal differentiation |
JP3460034B2 (ja) * | 1995-04-03 | 2003-10-27 | 富士通株式会社 | ブースト型等化回路 |
KR100251924B1 (ko) * | 1996-09-02 | 2000-04-15 | 윤종용 | 탐색시 소음을 줄이기 위한 적응피이드포워드 제어방법 |
US6560059B1 (en) | 1999-05-07 | 2003-05-06 | Seagate Technology Llc | Method and apparatus for suppressing seek-induced vibration in a disc drive |
SG84531A1 (en) * | 1999-05-20 | 2001-11-20 | Univ Singapore | Disturbance attenuation in a precision servomechanism by a frequency-separated acceleration soft sensor |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3351829A (en) * | 1964-01-30 | 1967-11-07 | Bofors Ab | Stabilizing device for a control system |
US3427606A (en) * | 1966-03-02 | 1969-02-11 | Ibm | Memory system |
GB1206720A (en) * | 1968-02-22 | 1970-09-30 | Rank Organisation Ltd | Improvements in servo control systems |
US3648031A (en) * | 1970-10-30 | 1972-03-07 | Collins Radio Co | Control system filtering technique |
US4030132A (en) * | 1975-03-27 | 1977-06-14 | Memorex Corporation | Dual mode velocity servo control for a linear actuator motor |
JPS5264577A (en) * | 1975-11-21 | 1977-05-28 | Nippon Telegr & Teleph Corp <Ntt> | Oscillation preventing controller |
US4200827A (en) * | 1977-06-29 | 1980-04-29 | International Business Machines Corporation | Positioning system employing feedforward and feedback control |
US4284942A (en) * | 1978-01-06 | 1981-08-18 | Lockheed Electronics Co., Inc. | Load driving apparatus |
US4295081A (en) * | 1978-01-06 | 1981-10-13 | Lockheed Electronics Co., Inc. | Load actuating servomechanism with resonance equalization |
US4177430A (en) * | 1978-03-06 | 1979-12-04 | Rockwell International Corporation | Adaptive noise cancelling receiver |
JPS5510688A (en) * | 1978-07-11 | 1980-01-25 | Tech Res & Dev Inst Of Japan Def Agency | Control circuit |
GB2035738B (en) * | 1978-11-18 | 1983-03-09 | Barton G | Linear phase filter |
US4267496A (en) * | 1979-05-18 | 1981-05-12 | Ivanov Gely M | Device for damping oscillations |
US4288731A (en) * | 1980-02-22 | 1981-09-08 | Sperry Corporation | Average value tachometer for a disc drive servo and the like |
US4337427A (en) * | 1980-04-14 | 1982-06-29 | General Dynamics, Pomona Division | Selective filter for closed loop servo system |
JPS57120238A (en) * | 1981-01-16 | 1982-07-27 | Matsushita Electric Ind Co Ltd | Reproducing device |
JP2606841B2 (ja) * | 1986-11-21 | 1997-05-07 | 株式会社リコー | 画像形成装置の異常検知装置 |
-
1983
- 1983-10-20 US US06/543,688 patent/US4642541A/en not_active Expired - Fee Related
-
1984
- 1984-10-17 JP JP59503950A patent/JPS61500193A/ja active Pending
- 1984-10-17 AU AU35523/84A patent/AU574115B2/en not_active Ceased
- 1984-10-17 WO PCT/US1984/001671 patent/WO1985001806A1/en unknown
- 1984-10-19 EP EP84307200A patent/EP0139531B1/de not_active Expired
- 1984-10-19 IE IE2694/84A patent/IE55954B1/xx unknown
- 1984-10-19 DE DE8484307200T patent/DE3481954D1/de not_active Expired - Fee Related
- 1984-10-19 CA CA000465983A patent/CA1278377C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA1278377C (en) | 1990-12-27 |
EP0139531B1 (de) | 1990-04-11 |
EP0139531A3 (en) | 1987-04-22 |
IE55954B1 (en) | 1991-02-27 |
EP0139531A2 (de) | 1985-05-02 |
JPS61500193A (ja) | 1986-01-30 |
AU3552384A (en) | 1985-05-07 |
WO1985001806A1 (en) | 1985-04-25 |
US4642541A (en) | 1987-02-10 |
IE842694L (en) | 1985-04-20 |
AU574115B2 (en) | 1988-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |