FR2386097A1 - Tete magnetique n'engendrant pas de signaux parasites lors de sa lecture/ecriture de pistes de donnees reperees par des pistes servo - Google Patents
Tete magnetique n'engendrant pas de signaux parasites lors de sa lecture/ecriture de pistes de donnees reperees par des pistes servoInfo
- Publication number
- FR2386097A1 FR2386097A1 FR7804187A FR7804187A FR2386097A1 FR 2386097 A1 FR2386097 A1 FR 2386097A1 FR 7804187 A FR7804187 A FR 7804187A FR 7804187 A FR7804187 A FR 7804187A FR 2386097 A1 FR2386097 A1 FR 2386097A1
- Authority
- FR
- France
- Prior art keywords
- tracks
- magnetic head
- reading
- writing data
- data tracks
- 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
- 244000045947 parasite Species 0.000 title 1
- 230000003071 parasitic effect Effects 0.000 abstract 2
- 230000026683 transduction Effects 0.000 abstract 1
- 238000010361 transduction Methods 0.000 abstract 1
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
-
- 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
- G11B5/584—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 tapes
- G11B5/588—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 tapes by controlling the position of the rotating heads
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
Structure de tête magnétique n'engendrant pas de signaux parasites lors de la lecture de pistes de données repérées par des pistes servo. La tête se compose de deux pièces polaires 32 et 34 définissant entre elles un entrefer de transduction 36. Afin d'éliminer les signaux parasites pouvant être engendrés par le bord d'attaque de la pièce polaire 34, on donne à cette dernière une largeur A qui correspond à la distance séparant les servopistes, mesurée dans la direction du déplacement de la tête, lorsque cette dernière traverse lesdites servopistes pour venir balayer les pistes de données.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/782,266 US4149204A (en) | 1977-03-28 | 1977-03-28 | Minor bit reduction on a magnetic head |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386097A1 true FR2386097A1 (fr) | 1978-10-27 |
FR2386097B1 FR2386097B1 (fr) | 1980-08-29 |
Family
ID=25125520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7804187A Granted FR2386097A1 (fr) | 1977-03-28 | 1978-02-08 | Tete magnetique n'engendrant pas de signaux parasites lors de sa lecture/ecriture de pistes de donnees reperees par des pistes servo |
Country Status (7)
Country | Link |
---|---|
US (1) | US4149204A (fr) |
JP (2) | JPS53120514A (fr) |
CA (1) | CA1111553A (fr) |
DE (1) | DE2813193A1 (fr) |
FR (1) | FR2386097A1 (fr) |
GB (1) | GB1571175A (fr) |
IT (1) | IT1109182B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014311A1 (fr) * | 1979-02-05 | 1980-08-20 | International Business Machines Corporation | Méthode de correction de l'alignement tête-piste, unité de bande magnétique à tête rotative et bande magnétique |
EP0030469A2 (fr) * | 1979-12-07 | 1981-06-17 | Matsushita Electric Industrial Co., Ltd. | Enregisteur video à bande magnetique comportant un dispositif de poursuite de piste |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135996U (fr) * | 1979-03-20 | 1980-09-27 | ||
JPS55134383A (en) * | 1979-04-09 | 1980-10-20 | Citizen Watch Co Ltd | Watch with illumination |
JPS5644109A (en) * | 1979-09-17 | 1981-04-23 | Toshiba Corp | Magnetic recording and reproducing system |
US4287540A (en) * | 1979-12-07 | 1981-09-01 | International Business Machines Corporation | Stabilized recording |
US4325092A (en) * | 1980-07-18 | 1982-04-13 | King Instrument Corporation | Apparatus for detection of cue data carried by a recording medium moving at greatly varying speeds |
US4541026A (en) * | 1982-07-20 | 1985-09-10 | Vertimag Systems Corporation | Hybrid read-write head for perpendicular recording media |
US4849839A (en) * | 1985-04-30 | 1989-07-18 | Sony Corportion | Magnetic tape recording and/or reproducing apparatus rotary head assembly having sweeping device |
DE3529623A1 (de) * | 1985-08-19 | 1987-02-19 | Grundig Emv | Verfahren zur gleichzeitigen herstellung zweier zugeordneter magnetkoepfe fuer videogeraete |
JPS6366707A (ja) * | 1986-09-08 | 1988-03-25 | Alps Electric Co Ltd | 複合型磁気ヘツド |
US5949604A (en) * | 1992-06-24 | 1999-09-07 | Quantum Corporation | Method of writing and reading servo on tracks having a longitudinal gap |
US5307217A (en) * | 1992-06-24 | 1994-04-26 | Digital Equipment Corporation | Magnetic head for very high track density magnetic recording |
US5371638A (en) * | 1992-06-24 | 1994-12-06 | Digital Equipment Corporation | Servo method and apparatus for very high track density magnetic recording by adjusting head position based on servo information read from adjacent track |
US5452165A (en) * | 1994-03-16 | 1995-09-19 | International Business Machines Corporation | Close packed magnetic head linear array |
US7116514B2 (en) * | 2003-10-20 | 2006-10-03 | Quantum Corporation | Methods and systems for magnetic recording |
US7139152B2 (en) * | 2003-10-20 | 2006-11-21 | Quantum Corporation | Servo methods and systems using existing data structures and optical masks |
US7149050B2 (en) * | 2003-10-20 | 2006-12-12 | Quantum Corporation | Diffractive position sensors and control systems |
US7136255B2 (en) * | 2003-10-20 | 2006-11-14 | Quantum Corporation | Servo methods and systems using masked medium edge position sensors |
US7085095B2 (en) * | 2003-10-20 | 2006-08-01 | Quantum Corporation | Electromagnetic void-sensing probes and position control systems |
US7102845B2 (en) * | 2003-10-20 | 2006-09-05 | Quantum Corporation | Servo methods and systems using existing data structures and medium edge position |
US7184233B2 (en) * | 2004-06-04 | 2007-02-27 | Quantum Corporation | Dual source tracking servo systems and associated methods |
US20060103968A1 (en) * | 2004-11-12 | 2006-05-18 | Jurneke Joe K | Dynamic skew compensation systems and associated methods |
US7499235B2 (en) * | 2005-03-18 | 2009-03-03 | Quantum Corporation | Auto-servo tape system and associated recording head |
US7826169B2 (en) * | 2007-04-25 | 2010-11-02 | Quantum Corporation | Servo error detection and compensation utilizing virtual data tracking servo methods |
JP5658512B2 (ja) * | 2010-08-31 | 2015-01-28 | 富士フイルム株式会社 | サーボ信号が書き込まれた磁気テープの製造方法およびサーボライタ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3049698A (en) * | 1958-12-04 | 1962-08-14 | Ibm | Readback circuit for high-density magnetic bit storage |
AT257975B (de) * | 1965-10-13 | 1967-11-10 | Philips Nv | Magnetkopfanordnung |
US3964094A (en) * | 1974-11-07 | 1976-06-15 | International Business Machines Corporation | Servo information pattern for rotating head magnetic tape unit independent of amplitude |
-
1977
- 1977-03-28 US US05/782,266 patent/US4149204A/en not_active Expired - Lifetime
- 1977-12-09 CA CA292,764A patent/CA1111553A/fr not_active Expired
-
1978
- 1978-02-03 JP JP1061278A patent/JPS53120514A/ja active Granted
- 1978-02-08 FR FR7804187A patent/FR2386097A1/fr active Granted
- 1978-03-20 GB GB10993/78A patent/GB1571175A/en not_active Expired
- 1978-03-23 IT IT21513/78A patent/IT1109182B/it active
- 1978-03-25 DE DE19782813193 patent/DE2813193A1/de active Granted
-
1982
- 1982-12-03 JP JP57211536A patent/JPS58114320A/ja active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014311A1 (fr) * | 1979-02-05 | 1980-08-20 | International Business Machines Corporation | Méthode de correction de l'alignement tête-piste, unité de bande magnétique à tête rotative et bande magnétique |
EP0030469A2 (fr) * | 1979-12-07 | 1981-06-17 | Matsushita Electric Industrial Co., Ltd. | Enregisteur video à bande magnetique comportant un dispositif de poursuite de piste |
EP0030469A3 (en) * | 1979-12-07 | 1981-12-16 | Matsushita Electric Industrial Co., Ltd. | Tracking apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS53120514A (en) | 1978-10-21 |
IT1109182B (it) | 1985-12-16 |
GB1571175A (en) | 1980-07-09 |
JPS623488B2 (fr) | 1987-01-26 |
CA1111553A (fr) | 1981-10-27 |
DE2813193A1 (de) | 1978-10-05 |
DE2813193C2 (fr) | 1987-03-05 |
FR2386097B1 (fr) | 1980-08-29 |
JPS58114320A (ja) | 1983-07-07 |
IT7821513A0 (it) | 1978-03-23 |
US4149204A (en) | 1979-04-10 |
JPS6313248B2 (fr) | 1988-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |