WO2003021575A3 - Magnetic servo of a recording head - Google Patents
Magnetic servo of a recording head Download PDFInfo
- Publication number
- WO2003021575A3 WO2003021575A3 PCT/US2002/028442 US0228442W WO03021575A3 WO 2003021575 A3 WO2003021575 A3 WO 2003021575A3 US 0228442 W US0228442 W US 0228442W WO 03021575 A3 WO03021575 A3 WO 03021575A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- recording head
- servo
- read
- write head
- 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
- G11B5/584—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
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02757641A EP1428208A2 (en) | 2001-09-05 | 2002-09-05 | Magnetic servo of a recording head |
JP2003525838A JP2005502149A (en) | 2001-09-05 | 2002-09-05 | Magnetic servo for recording head |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/946,583 | 2001-09-05 | ||
US09/946,583 US6856484B2 (en) | 2001-09-05 | 2001-09-05 | Magnetic servo of a recording head |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003021575A2 WO2003021575A2 (en) | 2003-03-13 |
WO2003021575A3 true WO2003021575A3 (en) | 2003-10-02 |
Family
ID=25484689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/028442 WO2003021575A2 (en) | 2001-09-05 | 2002-09-05 | Magnetic servo of a recording head |
Country Status (4)
Country | Link |
---|---|
US (1) | US6856484B2 (en) |
EP (1) | EP1428208A2 (en) |
JP (1) | JP2005502149A (en) |
WO (1) | WO2003021575A2 (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940681B2 (en) * | 2001-08-20 | 2005-09-06 | Quantum Corporation | Optical to magnetic alignment in magnetic tape system |
US7102845B2 (en) * | 2003-10-20 | 2006-09-05 | Quantum Corporation | Servo methods and systems using existing data structures and medium edge position |
US7149050B2 (en) * | 2003-10-20 | 2006-12-12 | Quantum Corporation | Diffractive position sensors and control systems |
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 |
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 |
US20050195510A1 (en) * | 2004-03-04 | 2005-09-08 | Quantum Corporation | Feedback-controlled optical servo writer |
US7158338B2 (en) * | 2004-05-24 | 2007-01-02 | Quantum Corporation | Servo track having periodic frames of tone field and embedded synchronization marks |
US7184233B2 (en) * | 2004-06-04 | 2007-02-27 | Quantum Corporation | Dual source tracking servo systems and associated methods |
JP2006107597A (en) * | 2004-10-04 | 2006-04-20 | Hitachi Maxell Ltd | Magnetic tape recording and reproducing method and device |
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 |
US7362525B2 (en) * | 2005-07-22 | 2008-04-22 | Quantum Corporation | PRML based magnetic servo position demodulator |
US7265922B2 (en) * | 2005-10-27 | 2007-09-04 | International Business Machines Corporation | Asperity data storage system, method and medium |
US7428118B2 (en) * | 2005-11-28 | 2008-09-23 | Quantum Corporation | LTM compensation methods and systems for magnetic servo writing |
US7826169B2 (en) * | 2007-04-25 | 2010-11-02 | Quantum Corporation | Servo error detection and compensation utilizing virtual data tracking servo methods |
US7990644B2 (en) * | 2008-02-29 | 2011-08-02 | International Business Machines Corporation | Apparatus and method to decode linear position information encoded in a sequential information storage medium |
JP5282054B2 (en) * | 2010-01-29 | 2013-09-04 | 株式会社日立ハイテクノロジーズ | Magnetic disk inspection method and apparatus |
US8869179B2 (en) | 2011-06-17 | 2014-10-21 | Oracle International Corporation | Rotary head data storage and retrieval system and method |
US9324347B2 (en) * | 2012-09-19 | 2016-04-26 | Oracle International Corporation | Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system |
US8780682B2 (en) | 2012-11-07 | 2014-07-15 | Oracle International Corporation | Rotary head data storage and retrieval system and method for data erasure |
US8793713B2 (en) | 2012-11-07 | 2014-07-29 | Oracle International Corporation | Rotary head data storage and retrieval system and method with tape medium having transverse primary data tracks and longitudinal secondary data track |
US8897113B2 (en) | 2012-11-07 | 2014-11-25 | Oracle International Corporation | Rotary head data storage and retrieval system and method for data verification |
US9608670B2 (en) * | 2014-07-14 | 2017-03-28 | International Business Machines Corporation | Reliable data reading with data set screening by error injection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558383A (en) * | 1983-06-30 | 1985-12-10 | International Business Machines Corporation | Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk |
US4570191A (en) * | 1984-07-20 | 1986-02-11 | International Business Machines Corporation | Optical sensor for servo position control |
US4816939A (en) * | 1986-08-21 | 1989-03-28 | Polaroid Corporation | Magnetic recording media and servo systems using light-transmitting optical gratings |
US6075678A (en) * | 1998-03-24 | 2000-06-13 | Quantum Corporation | Pivoting lever cam guide tape head positioner |
US6275349B1 (en) * | 1998-12-02 | 2001-08-14 | Storage Technology Corporation | Integrated optical tracking system for magnetic media |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2615838C2 (en) | 1976-04-10 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Device for position control of a read / write head for data carriers with a magnetic storage layer |
US4961123A (en) | 1988-06-03 | 1990-10-02 | Insite Peripherals | Magnetic information media storage with optical servo tracks |
US5079663A (en) | 1990-01-29 | 1992-01-07 | International Business Machines Corporation | Magnetoresistive sensor with track following capability |
US5105322A (en) * | 1990-06-29 | 1992-04-14 | Digital Equipment Corporation | Transverse positioner for read/write head |
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 |
US6018434A (en) | 1997-01-14 | 2000-01-25 | Quantum Corporation | Tape cartridge having written-in-defect servo patterns for rapid head position calibration |
US6134070A (en) * | 1997-05-22 | 2000-10-17 | Imation Corp. | Encoded servo track configurations, servo writer and systems/method regarding same |
US6084740A (en) | 1997-12-01 | 2000-07-04 | Storage Technology Corporation | Optical servo system for a tape drive |
US6246535B1 (en) | 1998-11-13 | 2001-06-12 | Quantum Corporation | Optical apparatus for tracking a magnetic tape |
US6433951B1 (en) * | 1999-02-17 | 2002-08-13 | Imation Corp. | Magnetic data storage tape with etched servo pattern, method of manufacturing same, and method of servo positioning on same |
US6493174B1 (en) * | 2000-02-17 | 2002-12-10 | Imation Corp. | Optical servo system for use with magnetic data storage tape having magnetic reference indicators |
US6430008B1 (en) * | 2000-03-30 | 2002-08-06 | Storage Technology Corporation | Measurement of tape position error |
-
2001
- 2001-09-05 US US09/946,583 patent/US6856484B2/en not_active Expired - Fee Related
-
2002
- 2002-09-05 EP EP02757641A patent/EP1428208A2/en not_active Withdrawn
- 2002-09-05 WO PCT/US2002/028442 patent/WO2003021575A2/en not_active Application Discontinuation
- 2002-09-05 JP JP2003525838A patent/JP2005502149A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558383A (en) * | 1983-06-30 | 1985-12-10 | International Business Machines Corporation | Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk |
US4570191A (en) * | 1984-07-20 | 1986-02-11 | International Business Machines Corporation | Optical sensor for servo position control |
US4816939A (en) * | 1986-08-21 | 1989-03-28 | Polaroid Corporation | Magnetic recording media and servo systems using light-transmitting optical gratings |
US6075678A (en) * | 1998-03-24 | 2000-06-13 | Quantum Corporation | Pivoting lever cam guide tape head positioner |
US6275349B1 (en) * | 1998-12-02 | 2001-08-14 | Storage Technology Corporation | Integrated optical tracking system for magnetic media |
Also Published As
Publication number | Publication date |
---|---|
US6856484B2 (en) | 2005-02-15 |
US20030043498A1 (en) | 2003-03-06 |
WO2003021575A2 (en) | 2003-03-13 |
EP1428208A2 (en) | 2004-06-16 |
JP2005502149A (en) | 2005-01-20 |
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