JPS6313248B2 - - Google Patents
Info
- Publication number
- JPS6313248B2 JPS6313248B2 JP57211536A JP21153682A JPS6313248B2 JP S6313248 B2 JPS6313248 B2 JP S6313248B2 JP 57211536 A JP57211536 A JP 57211536A JP 21153682 A JP21153682 A JP 21153682A JP S6313248 B2 JPS6313248 B2 JP S6313248B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- servo
- gap
- pole piece
- head
- 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
Links
- 238000004804 winding Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US782266 | 1977-03-28 | ||
US05/782,266 US4149204A (en) | 1977-03-28 | 1977-03-28 | Minor bit reduction on a magnetic head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58114320A JPS58114320A (ja) | 1983-07-07 |
JPS6313248B2 true JPS6313248B2 (US20030157376A1-20030821-M00001.png) | 1988-03-24 |
Family
ID=25125520
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1061278A Granted JPS53120514A (en) | 1977-03-28 | 1978-02-03 | Magnetic head assembly |
JP57211536A Granted JPS58114320A (ja) | 1977-03-28 | 1982-12-03 | 磁気ヘツド集成体 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1061278A Granted JPS53120514A (en) | 1977-03-28 | 1978-02-03 | Magnetic head assembly |
Country Status (7)
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4285017A (en) * | 1979-02-05 | 1981-08-18 | International Business Machines Corporation | Stripe following in a helical scan device |
JPS55135996U (US20030157376A1-20030821-M00001.png) * | 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 |
JPS5683835A (en) * | 1979-12-07 | 1981-07-08 | Matsushita Electric Ind Co Ltd | Tracking device |
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 |
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 |
US5949604A (en) * | 1992-06-24 | 1999-09-07 | Quantum Corporation | Method of writing and reading servo on tracks having a longitudinal gap |
US5452165A (en) * | 1994-03-16 | 1995-09-19 | International Business Machines Corporation | Close packed magnetic head linear array |
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 |
US7102845B2 (en) * | 2003-10-20 | 2006-09-05 | Quantum Corporation | Servo methods and systems using existing data structures and medium edge position |
US7085095B2 (en) * | 2003-10-20 | 2006-08-01 | Quantum Corporation | Electromagnetic void-sensing probes and position control systems |
US7139152B2 (en) * | 2003-10-20 | 2006-11-21 | Quantum Corporation | Servo methods and systems using existing data structures and optical masks |
US7116514B2 (en) * | 2003-10-20 | 2006-10-03 | Quantum Corporation | Methods and systems for magnetic recording |
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/en 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
Also Published As
Publication number | Publication date |
---|---|
JPS53120514A (en) | 1978-10-21 |
FR2386097B1 (US20030157376A1-20030821-M00001.png) | 1980-08-29 |
IT1109182B (it) | 1985-12-16 |
JPS623488B2 (US20030157376A1-20030821-M00001.png) | 1987-01-26 |
GB1571175A (en) | 1980-07-09 |
FR2386097A1 (fr) | 1978-10-27 |
JPS58114320A (ja) | 1983-07-07 |
DE2813193A1 (de) | 1978-10-05 |
IT7821513A0 (it) | 1978-03-23 |
CA1111553A (en) | 1981-10-27 |
US4149204A (en) | 1979-04-10 |
DE2813193C2 (US20030157376A1-20030821-M00001.png) | 1987-03-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6313248B2 (US20030157376A1-20030821-M00001.png) | ||
JP2762307B2 (ja) | 変換器ヘツドの位置決めのためのサーボ・システムと方法 | |
US5568331A (en) | Method of head positioning and magnetic recording disk drive using the same | |
US5426543A (en) | Servo positioning system for magnetic recording media | |
US6801379B2 (en) | Multi-magnetic recording head, and magnetic recording method and magnetic recording apparatus using the same | |
JPH09305916A (ja) | 2ギャップ磁気読取り/書込みヘッド | |
GB2098378A (en) | Magnetic head | |
US4819107A (en) | Magnetic transducer head structure | |
US4458280A (en) | Servo writing transducer design and writing method | |
JP2520479B2 (ja) | ディスケット判読用の磁気ヘッド | |
JP2828673B2 (ja) | 薄膜磁気ヘッド | |
EP0174714A1 (en) | Magnetic transducer head structure and method of use | |
US20050024760A1 (en) | Perpendicular recording and read head assembly with in situ stand alone stabilizer for a magnetic medium underlayer | |
EP0572098B1 (en) | Magnetic transducer head structure | |
JP3265778B2 (ja) | 磁気ディスク装置 | |
JPH0444610A (ja) | 複合型薄膜磁気ヘッドおよびその製造方法 | |
JP2591009B2 (ja) | 磁気ヘッド | |
JPH0458648B2 (US20030157376A1-20030821-M00001.png) | ||
JPH073448Y2 (ja) | 磁気ヘツド | |
JPH0326450B2 (US20030157376A1-20030821-M00001.png) | ||
KR870000043B1 (ko) | 상호 방위각손실방식 다중 트랙복합 헤드 | |
JP3532463B2 (ja) | 磁気記録再生装置 | |
JPH0279205A (ja) | 磁気ヘッド | |
JPS62289908A (ja) | 読出し・書込み分離形薄膜磁気ヘツド | |
JPH0447366B2 (US20030157376A1-20030821-M00001.png) |