JPS5148054B2 - - Google Patents
Info
- Publication number
- JPS5148054B2 JPS5148054B2 JP48096253A JP9625373A JPS5148054B2 JP S5148054 B2 JPS5148054 B2 JP S5148054B2 JP 48096253 A JP48096253 A JP 48096253A JP 9625373 A JP9625373 A JP 9625373A JP S5148054 B2 JPS5148054 B2 JP S5148054B2
- Authority
- JP
- Japan
- 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
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
- G05D3/1427—Control of position or direction using feedback using an analogue comparing device with non-linear amplifier chain
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Feedback Control In General (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00286000A US3818502A (en) | 1972-09-05 | 1972-09-05 | Automatic head width correction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4966115A JPS4966115A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-06-26 |
| JPS5148054B2 true JPS5148054B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-12-18 |
Family
ID=23096616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48096253A Expired JPS5148054B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-09-05 | 1973-08-29 |
Country Status (12)
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893180A (en) * | 1974-01-02 | 1975-07-01 | Honeywell Inf Systems | Transducer positioning system |
| US4092682A (en) * | 1976-08-10 | 1978-05-30 | Sperry Rand Corporation | Cross coupled demodulator for generating a servo head position error signal |
| US4092683A (en) * | 1976-08-10 | 1978-05-30 | Sperry Rand Corporation | Dual-mode demodulator for movement of a servo head |
| US4173773A (en) * | 1976-12-23 | 1979-11-06 | Olympus Optical Co., Ltd. | Tape end alarm for tape recorder |
| JPS5921104B2 (ja) * | 1977-03-08 | 1984-05-17 | 日本ビクター株式会社 | 情報記録媒体再生装置におけるトラッキングサ−ボ装置 |
| US4270073A (en) * | 1979-02-28 | 1981-05-26 | Persci, Inc. | Position control in disk drive system |
| JPS6230218Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1980-09-09 | 1987-08-03 | ||
| US4415939A (en) * | 1981-04-27 | 1983-11-15 | Iomega Corporation | Head positioning servo for disk drive |
| US4498129A (en) * | 1981-07-02 | 1985-02-05 | Irwin Magnetic Systems, Inc. | Method and apparatus for normalizing servo-positioning signals |
| US5220468A (en) * | 1982-05-10 | 1993-06-15 | Digital Equipment Corporation | Disk drive with constant bandwidth automatic gain control |
| US5109307A (en) * | 1982-05-10 | 1992-04-28 | Digital Equipment Corporation | Continuous-plus-embedded servo data position control system for magnetic disk device |
| US5202802A (en) * | 1982-05-10 | 1993-04-13 | Digital Equipment Corporation | Methods of writing and detecting dibit servo encoding |
| US5187619A (en) * | 1982-05-10 | 1993-02-16 | Digital Equipment Corporation | High speed switched automatic gain control |
| US5099367A (en) * | 1982-05-10 | 1992-03-24 | Digital Equipment Corporation | Method of automatic gain control basis selection and method of half-track servoing |
| US5115360A (en) * | 1982-05-10 | 1992-05-19 | Digital Equipment Corporation | Embedded burst demodulation and tracking error generation |
| US5153787A (en) * | 1982-05-10 | 1992-10-06 | Digital Equipment Corporation | Combination embedded and dedicated servo system including embedded servo waiting |
| US5153786A (en) * | 1982-05-10 | 1992-10-06 | Digital Equipment Corporation | Extended range servo system for positioning a disk drive head over a selected track |
| US5115359A (en) * | 1982-05-10 | 1992-05-19 | Digital Equipment Corporation | Fault tolerant frame, guardband and index detection methods |
| US5095471A (en) * | 1982-05-10 | 1992-03-10 | Digital Equipment Corporation | Velocity estimator in a disk drive positioning system |
| US5136440A (en) * | 1982-05-10 | 1992-08-04 | Digital Equipment Corporation | Track identification and counting in a disk drive positioning system |
| DE3275670D1 (en) * | 1982-06-18 | 1987-04-16 | Ibm | Head positioning system with automatic gain control |
| US4551776A (en) * | 1982-12-20 | 1985-11-05 | International Business Machines Corporation | Automatic reference adjustment for position error signal on disk file servo system |
| JPH056575Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1986-04-18 | 1993-02-19 | ||
| US5034746A (en) * | 1988-09-21 | 1991-07-23 | International Business Machines Corporation | Analog-to-digital converter for computer disk file servo position error signal |
| JP2004295985A (ja) * | 2003-03-26 | 2004-10-21 | Hitachi Ltd | データ記録開始タイミングの補償方法及びこれを用いた磁気ディスク装置 |
| US20060044658A1 (en) * | 2004-08-24 | 2006-03-02 | Yiping Ma | Detection of fly height change in a disk drive |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3263031A (en) * | 1962-05-29 | 1966-07-26 | Sperry Rand Corp | High-low frequency homing |
| US3593333A (en) * | 1969-11-26 | 1971-07-13 | Ibm | Position detection for a track following servo system |
-
1972
- 1972-09-05 US US00286000A patent/US3818502A/en not_active Expired - Lifetime
-
1973
- 1973-01-01 AR AR249940A patent/AR205155A1/es active
- 1973-07-24 IT IT26966/73A patent/IT991353B/it active
- 1973-07-26 GB GB3577073A patent/GB1387253A/en not_active Expired
- 1973-08-09 ES ES417723A patent/ES417723A1/es not_active Expired
- 1973-08-14 CH CH1165773A patent/CH556084A/xx not_active IP Right Cessation
- 1973-08-22 NL NLAANVRAGE7311541,A patent/NL169385C/xx not_active IP Right Cessation
- 1973-08-22 BE BE134820A patent/BE803890A/xx not_active IP Right Cessation
- 1973-08-23 CA CA179,524A patent/CA1003103A/en not_active Expired
- 1973-08-25 DE DE19732343002 patent/DE2343002A1/de active Pending
- 1973-08-29 JP JP48096253A patent/JPS5148054B2/ja not_active Expired
- 1973-09-04 BR BR6840/73A patent/BR7306840D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE803890A (fr) | 1973-12-17 |
| AR205155A1 (es) | 1976-04-12 |
| NL169385C (nl) | 1982-07-01 |
| JPS4966115A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-06-26 |
| BR7306840D0 (pt) | 1974-07-25 |
| NL169385B (nl) | 1982-02-01 |
| CH556084A (de) | 1974-11-15 |
| GB1387253A (en) | 1975-03-12 |
| US3818502A (en) | 1974-06-18 |
| IT991353B (it) | 1975-07-30 |
| DE2343002A1 (de) | 1974-03-28 |
| CA1003103A (en) | 1977-01-04 |
| ES417723A1 (es) | 1976-02-01 |
| NL7311541A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-03-07 |