DE69807112D1 - Optisches servosystem für bandantrieb - Google Patents

Optisches servosystem für bandantrieb

Info

Publication number
DE69807112D1
DE69807112D1 DE69807112T DE69807112T DE69807112D1 DE 69807112 D1 DE69807112 D1 DE 69807112D1 DE 69807112 T DE69807112 T DE 69807112T DE 69807112 T DE69807112 T DE 69807112T DE 69807112 D1 DE69807112 D1 DE 69807112D1
Authority
DE
Germany
Prior art keywords
tape drive
servo system
optical servo
optical
tape
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 - Fee Related
Application number
DE69807112T
Other languages
English (en)
Other versions
DE69807112T2 (de
Inventor
Lawrence Leonhardt
David Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Storage Technology Corp
Original Assignee
Storage Technology Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25527797&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69807112(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Storage Technology Corp filed Critical Storage Technology Corp
Application granted granted Critical
Publication of DE69807112D1 publication Critical patent/DE69807112D1/de
Publication of DE69807112T2 publication Critical patent/DE69807112T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
    • G11B15/08—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape by photoelectric sensing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/602—Guiding record carrier for track selection, acquisition or following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/103—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
    • G11B27/26—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording by photoelectric detection, e.g. of sprocket holes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • 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
    • G11B5/54—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 into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • G11B5/5508—Control circuits therefor
    • 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
DE69807112T 1997-12-01 1998-11-30 Optisches servosystem für bandantrieb Expired - Fee Related DE69807112T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/980,723 US6084740A (en) 1997-12-01 1997-12-01 Optical servo system for a tape drive
PCT/US1998/025384 WO1999028909A1 (en) 1997-12-01 1998-11-30 Optical servo system for a tape drive

Publications (2)

Publication Number Publication Date
DE69807112D1 true DE69807112D1 (de) 2002-09-12
DE69807112T2 DE69807112T2 (de) 2003-05-08

Family

ID=25527797

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69807112T Expired - Fee Related DE69807112T2 (de) 1997-12-01 1998-11-30 Optisches servosystem für bandantrieb
DE69833389T Expired - Fee Related DE69833389T2 (de) 1997-12-01 1998-11-30 Magnetaufzeichnungsband

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69833389T Expired - Fee Related DE69833389T2 (de) 1997-12-01 1998-11-30 Magnetaufzeichnungsband

Country Status (4)

Country Link
US (4) US6084740A (de)
EP (2) EP1117092B1 (de)
DE (2) DE69807112T2 (de)
WO (1) WO1999028909A1 (de)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030054203A1 (en) * 1997-10-22 2003-03-20 Quantum Corporation, A California Corporation Magnetic tape
US6084740A (en) * 1997-12-01 2000-07-04 Storage Technology Corporation Optical servo system for a tape drive
JPH11339254A (ja) * 1998-03-24 1999-12-10 Quantum Corp 磁気記録テ―プ、情報記憶媒体および磁気テ―プ記録再生システム
US6188532B1 (en) * 1998-09-08 2001-02-13 Quantum Corporation Backward compatible head and head positioning assembly for a linear digital tape drive
US6246535B1 (en) * 1998-11-13 2001-06-12 Quantum Corporation Optical apparatus for tracking a magnetic tape
US6275349B1 (en) 1998-12-02 2001-08-14 Storage Technology Corporation Integrated optical tracking system for magnetic media
US6741415B1 (en) 1999-02-16 2004-05-25 Quantum Corporation Method of writing servo signal on magnetic tape
JP4286457B2 (ja) 1999-02-17 2009-07-01 クウォンタム・コーポレイション 磁気テープへのサーボ信号書き込み方法
US6365061B1 (en) * 1999-02-17 2002-04-02 Imation Corp. Multibeam laser servowriting of magnetic data storage media
US6606220B1 (en) 1999-06-11 2003-08-12 Quantum Corporation Systems and methods for providing beginning-of-tape and end-of-tape indicators
US6961200B2 (en) * 1999-07-27 2005-11-01 Quantum Corporation Optical servo track identification on tape storage media
US20030189782A1 (en) * 2002-04-04 2003-10-09 Storage Technology Corporation Optical servo system for a tape drive
US7082006B1 (en) * 1999-08-10 2006-07-25 Storage Technology Corporation Compact optical tracking system for magnetic tape
JP2001126344A (ja) * 1999-10-26 2001-05-11 Sony Corp 磁気記録再生装置及び磁気テープの記録再生方法
US6493174B1 (en) * 2000-02-17 2002-12-10 Imation Corp. Optical servo system for use with magnetic data storage tape having magnetic reference indicators
JP2001250346A (ja) * 2000-03-06 2001-09-14 Fujitsu Ltd 磁気テープ装置
US6940676B1 (en) * 2000-06-07 2005-09-06 Quantum Corporation Triple push-pull optical tracking system
US6690636B1 (en) * 2000-09-27 2004-02-10 Eastman Kodak Company Preformatting optical recording medium
US7492675B2 (en) * 2001-01-25 2009-02-17 Dphi Acquisitions, Inc. Digital servo system with calibrated notch filters
US7593300B2 (en) * 2001-01-25 2009-09-22 Dphi Acquisitions, Inc. Digital tracking servo system with off-format detection
US7680004B2 (en) 2001-01-25 2010-03-16 Dphi Acquisitions, Inc. Digital servo system with inverse non-linearity compensation
US7522480B2 (en) * 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US6791784B2 (en) * 2001-03-23 2004-09-14 Imation Corp. Diffraction-based monitoring of a patterned magnetic recording medium
US6856484B2 (en) 2001-09-05 2005-02-15 Quantum Corporation Magnetic servo of a recording head
US7187515B2 (en) * 2003-02-05 2007-03-06 Quantum Corporation Method and system for tracking magnetic media with embedded optical servo tracks
US6980390B2 (en) * 2003-02-05 2005-12-27 Quantum Corporation Magnetic media with embedded optical servo tracks
US6837587B1 (en) * 2003-02-21 2005-01-04 Lockheed Martin Corporation Low cost fast steering mirror
US8125695B2 (en) * 2003-03-24 2012-02-28 Hewlett-Packard Development Company, L.P. Imaging system and method
US6999269B2 (en) * 2003-09-17 2006-02-14 Imation Corp. Two-sided data storage tape with servo information on both sides of the tape
US7173794B2 (en) * 2003-09-17 2007-02-06 Imation Corp. Accessing both sides of data storage tape
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
US7085095B2 (en) * 2003-10-20 2006-08-01 Quantum Corporation Electromagnetic void-sensing probes and position 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
US7139152B2 (en) * 2003-10-20 2006-11-21 Quantum Corporation Servo methods and systems using existing data structures and optical masks
US7184233B2 (en) * 2004-06-04 2007-02-27 Quantum Corporation Dual source tracking servo systems and associated methods
US7269687B2 (en) 2004-08-20 2007-09-11 Quantum Corporation Bounding defective regions of a tape storage medium
US7230788B2 (en) * 2004-11-10 2007-06-12 Certance, Llc System and method for tape drive control
US7203027B2 (en) * 2004-11-10 2007-04-10 Certance, Llc System and method for measuring the position of a tape drive head
US20060103968A1 (en) * 2004-11-12 2006-05-18 Jurneke Joe K Dynamic skew compensation systems and associated methods
US20060140077A1 (en) * 2004-12-28 2006-06-29 Quantum Corporation Focalizer alignment
US7499235B2 (en) * 2005-03-18 2009-03-03 Quantum Corporation Auto-servo tape system and associated recording head
US7646694B2 (en) * 2005-10-20 2010-01-12 Opternity Storage, Inc. Methods and systems for providing data track identifying information on a recording medium
US7791834B2 (en) * 2006-08-14 2010-09-07 International Business Machines Corporation Magnetic head having a ratio of back gap width to front gap width in about a defined range
US7508609B2 (en) * 2006-10-25 2009-03-24 Spectra Logic Corporation Formatted storage media providing space for encrypted text and dedicated space for clear text
US7826169B2 (en) * 2007-04-25 2010-11-02 Quantum Corporation Servo error detection and compensation utilizing virtual data tracking servo methods
US7463444B1 (en) 2008-03-30 2008-12-09 International Business Machines Corporation Head position detector with optical slit pattern
US12033679B2 (en) * 2021-06-28 2024-07-09 Tape Ark Tape reader

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426337A (en) 1964-12-21 1969-02-04 Ibm Positioning system for random access device
US3997715A (en) 1974-03-25 1976-12-14 Mca Disco-Vision, Inc. Focusing system for videodisc player
US4340305A (en) * 1977-05-03 1982-07-20 Massachusetts Institute Of Technology Plate aligning
NL7705111A (nl) * 1977-05-10 1978-11-14 Philips Nv Magneetband met optische waarneembare mar- keringen en werkwijze voor het vervaardigen van een dergelijke band.
NL7712418A (nl) * 1977-11-11 1979-05-15 Philips Nv Opteken- en/of weergeefinrichting voor een bandvormige magnetische registratiedrager voor- zien van een regelsysteem voor de positionering van de magneetkop.
JPS5573960A (en) * 1978-11-29 1980-06-04 Matsushita Electric Ind Co Ltd Information offering system
JPS56111169A (en) * 1980-02-04 1981-09-02 Fujitsu Ltd Track servo system of magnetic disc device
US4380032A (en) * 1980-04-25 1983-04-12 Newell Research Corporation Tape system with optically contrasting data marks
DE3417426A1 (de) * 1984-05-11 1985-11-14 Silviu 5100 Aachen Carlan Optische bandlaengenmessung fuer elektronische bandaufzeichnungsgeraete
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
US4816909A (en) 1986-12-17 1989-03-28 Olympus Optical Co., Ltd. Video endoscope system for use with different sizes of solid state devices
US4816941A (en) * 1987-09-16 1989-03-28 International Business Machines Corporation Disk file digital servo control system with optimized sampling rate
US4843494A (en) * 1987-10-15 1989-06-27 Polaroid Corporation Data storage apparatus using optical servo tracks
US5065387A (en) 1988-04-07 1991-11-12 Insite Peripherals, Inc. Method and apparatus for generating tracking error signals by means of an optical servo system
US4958245A (en) * 1988-04-07 1990-09-18 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
JPH01305340A (ja) * 1988-06-03 1989-12-08 Fuji Photo Film Co Ltd 表裏判別方法および装置
US4961123A (en) * 1988-06-03 1990-10-02 Insite Peripherals Magnetic information media storage with optical servo tracks
US4969058A (en) * 1988-11-10 1990-11-06 Insite Peripherals CArriage assembly for high track density flexible magnetic disk drive
US5196969A (en) * 1989-03-31 1993-03-23 Sharp Kabushiki Kaisha Head positioning system for serpentine magnetic recording/reproducing system
US5067039A (en) * 1989-10-20 1991-11-19 Insite Peripherals, Inc. High track density magnetic media with pitted optical servo tracks and method for stamping the tracks on the media
EP0423661A3 (en) * 1989-10-20 1993-08-04 Insite Peripherals, Inc. Dual magnetic head and method for writing on very high track density and conventional track density floppy disk
FR2657190B1 (fr) 1990-01-18 1995-07-21 Thomson Csf Dispositif de lecture de segments oblongs d'un support en defilement.
US5563868A (en) 1990-06-18 1996-10-08 Matsushita-Kotobuki Electronics Industries, Ltd. Optical servo system for magnetic disk
EP0484774A3 (en) 1990-11-09 1993-09-29 Insite Peripherals, Inc. Very high-density diskette format method and computer-implemented process
AR245309A1 (es) * 1991-01-25 1993-12-30 Philips Nv Casette provisto de una cinta magnetica y metodo para fabricar el cassette.
JPH04298869A (ja) 1991-03-27 1992-10-22 Hitachi Maxell Ltd フレキシブル磁気デイスクを用いる記録再生装置ならびにその磁気デイスクを用いる記録再生方法
JPH0620414A (ja) * 1991-10-25 1994-01-28 Hitachi Maxell Ltd 磁気記録再生装置
US5229620A (en) * 1991-12-31 1993-07-20 Tandberg Data A/S System for integrated tape hole detection by detecting an edge of the tape and/or a pattern on the tape
DE69227577T2 (de) * 1992-02-13 1999-04-29 Tandberg Data Asa, Oslo Vorrichtung und Verfahren für die Führung einer Bandkante kompatibel mit einem dafür bestimmten Bandservoformat
US5279775A (en) * 1992-06-10 1994-01-18 Iomega Corporation Acousto-optical intensity control of laser beam during etching of optical servo information of magnetic media
US5283773A (en) * 1992-06-10 1994-02-01 Iomega Corporation Steering laser beam while etching optical servo tracks for magnetic disks
US5566033A (en) * 1992-08-31 1996-10-15 Frame; Gary E. Method and apparatus for determining the location of information on a magnetic tape
GB9224003D0 (en) * 1992-11-16 1993-01-06 Minnesota Mining & Mfg Magnetic recording materials
WO1994012975A1 (en) * 1992-11-20 1994-06-09 Minnesota Mining And Manufacturing Company Method and apparatus for tape track identification
US5349484A (en) * 1992-12-23 1994-09-20 Eastman Kodak Company Light pattern detection for film edge following
US5333091B2 (en) * 1993-01-08 1996-12-17 Arthur D Little Enterprises Method and apparatus for controlling a videotape player to automatically scan past recorded commercial messages
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

Also Published As

Publication number Publication date
WO1999028909A1 (en) 1999-06-10
DE69833389D1 (de) 2006-04-20
EP1117092A2 (de) 2001-07-18
DE69807112T2 (de) 2003-05-08
US6549363B2 (en) 2003-04-15
US6480351B2 (en) 2002-11-12
US20020109928A1 (en) 2002-08-15
US6084740A (en) 2000-07-04
EP1036392A1 (de) 2000-09-20
EP1117092A3 (de) 2001-10-31
DE69833389T2 (de) 2006-07-27
EP1117092B1 (de) 2006-02-08
US20010006437A1 (en) 2001-07-05
US6236529B1 (en) 2001-05-22
EP1036392B1 (de) 2002-08-07

Similar Documents

Publication Publication Date Title
DE69807112D1 (de) Optisches servosystem für bandantrieb
DE69123584D1 (de) Optisches servosystem für magnetplatte
DE69824668D1 (de) Redundantes Servosystem
DE69804367D1 (de) Unterscheidungssystem für optische Platten
GB2335785B (en) Multi-channel magnetic tape system having optical tracking servo
DE69607400D1 (de) Platteneinspannsystem für ein Festplattenlaufwerk
DE69426441D1 (de) Servosteuerungssystem für Plattenspieler
DE59510393D1 (de) Kassettenmodul für Lichtwellenleiter
DE69622914D1 (de) Kopfbetätigungsorgan für Plattenantriebssystem
DE69310847D1 (de) Servosystem für Kraftfahrzeug
DE69401915D1 (de) Spurservoregelungsverfahren fur datenkassettenbandantrieb
DE69427356D1 (de) Antriebssystem für ein luftschiff
DE19782289T1 (de) Gleitstück für ein Optikplatten-Datenspeichersystem
DE69421208D1 (de) Steuerungssystem für Plattenspieler
EP0458319A3 (en) Servo system for optical recording reproducing drive
DE69511417D1 (de) Bandführungseinheit fur datenkassette
DE69623224D1 (de) Servospurfolgegerät für optische Platten
DE19782277T1 (de) Gleitstück für ein Optikplatten-Datenspeichersystem
DE69324065D1 (de) Anschlag für Plattenlaufwerke
DE69710703D1 (de) Servosystem
DE69022462D1 (de) System für die Regelung von Abtastkopfnachlauf unter Verwendung von Bandlageinformationen.
DE69425109D1 (de) Wiedergabeverfahren für ein optisches Aufzeichnungsmedium
DE69320748D1 (de) Aufzeichnungsgerät für ein optisches Aufzeichnungmedium
DE69116177D1 (de) Antriebsvorrichtung für ein optisches System
GB2327291B (en) Optical system for optical disk drive

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: FIENER, J., PAT.-ANW., 87719 MINDELHEIM

8339 Ceased/non-payment of the annual fee