IT1126221B - Apparecchiatura per la memorizzazione di dati - Google Patents
Apparecchiatura per la memorizzazione di datiInfo
- Publication number
- IT1126221B IT1126221B IT30572/77A IT3057277A IT1126221B IT 1126221 B IT1126221 B IT 1126221B IT 30572/77 A IT30572/77 A IT 30572/77A IT 3057277 A IT3057277 A IT 3057277A IT 1126221 B IT1126221 B IT 1126221B
- Authority
- IT
- Italy
- Prior art keywords
- data storage
- storage equipment
- equipment
- data
- storage
- Prior art date
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
- G11B5/48—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
- G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Control Of Position Or Direction (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB53582/76A GB1520350A (en) | 1976-12-22 | 1976-12-22 | Data storage apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1126221B true IT1126221B (it) | 1986-05-14 |
Family
ID=10468305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT30572/77A IT1126221B (it) | 1976-12-22 | 1977-12-12 | Apparecchiatura per la memorizzazione di dati |
Country Status (10)
Country | Link |
---|---|
US (1) | US4115823A (it) |
JP (1) | JPS58112B2 (it) |
BR (1) | BR7708548A (it) |
CA (1) | CA1109558A (it) |
DE (1) | DE2755652C2 (it) |
ES (1) | ES464537A1 (it) |
FR (1) | FR2375688A1 (it) |
GB (1) | GB1520350A (it) |
IT (1) | IT1126221B (it) |
NL (1) | NL7713945A (it) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4208679A (en) * | 1978-02-28 | 1980-06-17 | Digital Equipment Corporation | Transducer positioning system for rotating disk drive units |
DE2841381A1 (de) * | 1978-09-22 | 1980-03-27 | Siemens Ag | Schaltungsanordnung zur lageregelung eines datenkopfes in einem plattenspeicher |
US4246536A (en) * | 1978-09-29 | 1981-01-20 | International Business Machines Corporation | Electronic velocity measurement device |
JPS56157506A (en) * | 1980-05-09 | 1981-12-04 | Fujitsu Ltd | Positioning device |
US4383209A (en) * | 1980-10-15 | 1983-05-10 | Minnesota Mining And Manufacturing Company | Control system for transducer positioning motor |
US4377827A (en) * | 1980-11-10 | 1983-03-22 | Memorex Corporation | Servo positioning control system for a data storage apparatus |
US4390912A (en) * | 1980-11-12 | 1983-06-28 | Digital Equipment Corporation | Transducer positioning system and data disk therefor |
US4405956A (en) * | 1981-04-22 | 1983-09-20 | Xerox Corporation | Tracking apparatus for read/write head |
US4532562A (en) * | 1981-04-24 | 1985-07-30 | Iomega Corporation | Servo control of seek operation in magnetic disk drive |
US4439800A (en) * | 1981-04-24 | 1984-03-27 | Iomega Corporation | Servo control of seek operation in magnetic disk drive |
US5115360A (en) * | 1982-05-10 | 1992-05-19 | Digital Equipment Corporation | Embedded burst demodulation and tracking error generation |
US5136440A (en) * | 1982-05-10 | 1992-08-04 | Digital Equipment Corporation | Track identification and counting in a disk drive positioning system |
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 |
US5202802A (en) * | 1982-05-10 | 1993-04-13 | Digital Equipment Corporation | Methods of writing and detecting dibit servo encoding |
US5115359A (en) * | 1982-05-10 | 1992-05-19 | Digital Equipment Corporation | Fault tolerant frame, guardband and index detection methods |
US5109307A (en) * | 1982-05-10 | 1992-04-28 | Digital Equipment Corporation | Continuous-plus-embedded servo data position control system for magnetic disk device |
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 |
US5220468A (en) * | 1982-05-10 | 1993-06-15 | Digital Equipment Corporation | Disk drive with constant bandwidth automatic gain control |
US5153787A (en) * | 1982-05-10 | 1992-10-06 | Digital Equipment Corporation | Combination embedded and dedicated servo system including embedded servo waiting |
US5095471A (en) * | 1982-05-10 | 1992-03-10 | Digital Equipment Corporation | Velocity estimator in a disk drive positioning system |
ATE98038T1 (de) * | 1982-05-10 | 1993-12-15 | Digital Equipment Corp | Positioniersteuerungsverfahren mit sowohl kontinuierlichen als auch angefuegten informationen fuer einen magnetplattenspeicher. |
US4551776A (en) * | 1982-12-20 | 1985-11-05 | International Business Machines Corporation | Automatic reference adjustment for position error signal on disk file servo system |
JPS59117830U (ja) * | 1983-01-31 | 1984-08-09 | 日野自動車株式会社 | 舶用内燃機関 |
US4535372A (en) * | 1983-06-29 | 1985-08-13 | Storage Technology Corporation | Position tracking servo control systems and methods |
EP0141499A1 (en) * | 1983-08-31 | 1985-05-15 | Memorex Corporation | Disk drive servo techniques |
JPS60193176A (ja) * | 1984-03-13 | 1985-10-01 | Toshiba Corp | ヘツドの位置決め方式 |
US4700244A (en) * | 1986-02-14 | 1987-10-13 | Hewlett-Packard Company | Process and system for compensating for information shifts on disc storage media |
GB2188720B (en) * | 1986-04-04 | 1990-12-19 | Data Recording Instr Co | Improved position control system |
US4688118A (en) * | 1986-07-01 | 1987-08-18 | Hewlett-Packard Company | Servo gain compensation in a disc drive |
US5111349A (en) * | 1989-02-07 | 1992-05-05 | Alps Electric (Usa), Inc. | Digital servo system for moving body by a distance equal to an integral multiple of a predetermined pitch |
JPH0373476A (ja) * | 1989-05-17 | 1991-03-28 | Mitsubishi Electric Corp | 記録装置 |
KR930012164B1 (ko) * | 1991-11-09 | 1993-12-24 | 주식회사 금성사 | 브이씨알의 캡스탄 모터 회전제어장치의 자동트래킹 에러검출방법 및 장치 |
JP2608220B2 (ja) * | 1992-01-31 | 1997-05-07 | 富士通株式会社 | 磁気ディスク装置のポジション感度調整方法 |
US6266205B1 (en) | 1998-03-10 | 2001-07-24 | Maxtor Corporation | Parallel servo with ultra high bandwidth off-track detection |
US6606216B1 (en) | 1999-05-05 | 2003-08-12 | Maxtor Corporation | Transducer head with separate data and servo read elements |
US8498695B2 (en) | 2006-12-22 | 2013-07-30 | Novadaq Technologies Inc. | Imaging system with a single color image sensor for simultaneous fluorescence and color video endoscopy |
CN101964613B (zh) * | 2010-10-22 | 2013-04-10 | 西安立明电子科技有限责任公司 | 太阳能光电板自动跟踪系统 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534344A (en) * | 1967-12-21 | 1970-10-13 | Ibm | Method and apparatus for recording and detecting information |
US3742470A (en) * | 1971-12-30 | 1973-06-26 | Information Storage Systems | Memory disc pack drive having accurate read/write head positioning |
US3812533A (en) * | 1972-12-22 | 1974-05-21 | Vermont Res Corp | Information storage unit transducer positioning system |
DE2364784A1 (de) * | 1973-12-27 | 1975-07-03 | Ibm Deutschland | Spurnachlaufsteuerung fuer einen magnetplattenspeicher |
US3893180A (en) * | 1974-01-02 | 1975-07-01 | Honeywell Inf Systems | Transducer positioning system |
US4032984A (en) * | 1975-04-28 | 1977-06-28 | Burroughs Corporation | Transducer positioning system for providing both coarse and fine positioning |
GB1503971A (en) * | 1975-05-15 | 1978-03-15 | Ibm | Positioning system for data storage apparatus |
GB1503972A (en) * | 1975-07-24 | 1978-03-15 | Ibm | Data storage apparatus |
-
1976
- 1976-12-22 GB GB53582/76A patent/GB1520350A/en not_active Expired
-
1977
- 1977-06-27 US US05/810,328 patent/US4115823A/en not_active Expired - Lifetime
- 1977-11-10 FR FR7734665A patent/FR2375688A1/fr active Granted
- 1977-11-14 CA CA290,791A patent/CA1109558A/en not_active Expired
- 1977-11-28 ES ES464537A patent/ES464537A1/es not_active Expired
- 1977-12-09 JP JP52147304A patent/JPS58112B2/ja not_active Expired
- 1977-12-12 IT IT30572/77A patent/IT1126221B/it active
- 1977-12-14 DE DE2755652A patent/DE2755652C2/de not_active Expired
- 1977-12-16 NL NL7713945A patent/NL7713945A/xx not_active Application Discontinuation
- 1977-12-21 BR BR7708548A patent/BR7708548A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
CA1109558A (en) | 1981-09-22 |
NL7713945A (nl) | 1978-06-26 |
BR7708548A (pt) | 1978-08-15 |
ES464537A1 (es) | 1978-09-01 |
JPS58112B2 (ja) | 1983-01-05 |
JPS5395005A (en) | 1978-08-19 |
GB1520350A (en) | 1978-08-09 |
FR2375688A1 (fr) | 1978-07-21 |
FR2375688B1 (it) | 1980-08-22 |
US4115823A (en) | 1978-09-19 |
DE2755652A1 (de) | 1978-06-29 |
DE2755652C2 (de) | 1986-07-03 |
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