WO2000060581A3 - Helical scan tape drive error recovery using track profile mapping - Google Patents

Helical scan tape drive error recovery using track profile mapping Download PDF

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Publication number
WO2000060581A3
WO2000060581A3 PCT/US2000/008803 US0008803W WO0060581A3 WO 2000060581 A3 WO2000060581 A3 WO 2000060581A3 US 0008803 W US0008803 W US 0008803W WO 0060581 A3 WO0060581 A3 WO 0060581A3
Authority
WO
WIPO (PCT)
Prior art keywords
helical
curved
tape
data
read
Prior art date
Application number
PCT/US2000/008803
Other languages
French (fr)
Other versions
WO2000060581A2 (en
Inventor
David B Daniel
Fred Eifert
Douglas C Hansen
David Lawson
Thai Nguyen
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
Application filed by Storage Technology Corp filed Critical Storage Technology Corp
Priority to DE60000453T priority Critical patent/DE60000453T2/en
Priority to AU41908/00A priority patent/AU4190800A/en
Priority to EP00921615A priority patent/EP1166261B1/en
Priority to JP2000609995A priority patent/JP2002541605A/en
Publication of WO2000060581A2 publication Critical patent/WO2000060581A2/en
Publication of WO2000060581A3 publication Critical patent/WO2000060581A3/en

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
    • 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
    • G11B5/592—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 using bimorph elements supporting the heads
    • 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

Abstract

It is difficult to read data from curved helical data tracks in a helical scan tape drive. Curved helical tracks can be caused by improper tape tension, tape damage, tape path misalignment, tape head offset between different head systems, and debris. The present invention solves the problem of recovering data from curved helical tracks by providing a table of different curve offset signals. Each curve offset signal represents a curve track profile of a typical curved track. The position of the helical read head reading a curved data track is controlled as a function of one of the curve offset signals such that the read head is positioned properly with respect to the helical data track to provide a proper read back signal. The curve offset signals are selected one at a time to control the position of the helical read head until the helical read head provides a proper read back signal.
PCT/US2000/008803 1999-04-01 2000-03-31 Helical scan tape drive error recovery using track profile mapping WO2000060581A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE60000453T DE60000453T2 (en) 1999-04-01 2000-03-31 ERROR CORRECTION FOR SLOPED-TRACK TAPE DRIVE BY USING TRACK PROFILE ILLUSTRATION
AU41908/00A AU4190800A (en) 1999-04-01 2000-03-31 Helical scan tape drive error recovery using track profile mapping
EP00921615A EP1166261B1 (en) 1999-04-01 2000-03-31 Helical scan tape drive error recovery using track profile mapping
JP2000609995A JP2002541605A (en) 1999-04-01 2000-03-31 Spiral-scanning tape drive error recovery method using track profile mapping and apparatus therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/283,170 1999-04-01
US09/283,170 US6366422B1 (en) 1999-04-01 1999-04-01 Helical scan tape drive error recovery using track profile mapping

Publications (2)

Publication Number Publication Date
WO2000060581A2 WO2000060581A2 (en) 2000-10-12
WO2000060581A3 true WO2000060581A3 (en) 2001-01-04

Family

ID=23084844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/008803 WO2000060581A2 (en) 1999-04-01 2000-03-31 Helical scan tape drive error recovery using track profile mapping

Country Status (6)

Country Link
US (1) US6366422B1 (en)
EP (1) EP1166261B1 (en)
JP (1) JP2002541605A (en)
AU (1) AU4190800A (en)
DE (1) DE60000453T2 (en)
WO (1) WO2000060581A2 (en)

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US7297166B2 (en) 2003-06-25 2007-11-20 Depuy Products, Inc. Assembly tool for modular implants and associated method
US8998919B2 (en) 2003-06-25 2015-04-07 DePuy Synthes Products, LLC Assembly tool for modular implants, kit and associated method
US7582092B2 (en) 2003-06-25 2009-09-01 Depuy Products, Inc. Assembly tool for modular implants and associated method
US7239465B1 (en) 2003-06-30 2007-07-03 Storage Technology Corporation Multiple section head assembly for dual azimuth recording
US7116514B2 (en) * 2003-10-20 2006-10-03 Quantum Corporation Methods and systems for magnetic recording
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
US7149050B2 (en) * 2003-10-20 2006-12-12 Quantum Corporation Diffractive position sensors and control systems
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
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
US8556912B2 (en) 2007-10-30 2013-10-15 DePuy Synthes Products, LLC Taper disengagement tool
US8518050B2 (en) 2007-10-31 2013-08-27 DePuy Synthes Products, LLC Modular taper assembly device
US8533921B2 (en) 2010-06-15 2013-09-17 DePuy Synthes Products, LLC Spiral assembly tool
US9095452B2 (en) 2010-09-01 2015-08-04 DePuy Synthes Products, Inc. Disassembly tool
CN106974699B (en) 2011-04-06 2019-07-09 德普伊新特斯产品有限责任公司 The device assembly of implantation amendment hip prosthesis
US8959387B2 (en) 2012-07-31 2015-02-17 Hewlett-Packard Development Company, L.P. Tape drive retry
US9792928B2 (en) * 2012-11-02 2017-10-17 Hewlett Packard Enterprise Development Lp Tape storage device having at least one redundant read data element

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4550351A (en) * 1982-03-31 1985-10-29 Rca Corporation Adaptive automatic scan tracking system
EP0508827A2 (en) * 1991-04-11 1992-10-14 Sony Corporation Tracking control device

Family Cites Families (12)

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JPS5727421A (en) * 1980-07-23 1982-02-13 Sony Corp Track following device
DE3273539D1 (en) 1981-06-08 1986-11-06 Hitachi Ltd Azimuthal magnetic recording and reproducing apparatus
US4595960A (en) * 1982-11-03 1986-06-17 Rca Corporation Phase-reversed dithered automatic scan tracking system
JPS59185019A (en) * 1983-04-04 1984-10-20 Nec Corp Special reproducer
US5321570A (en) 1989-10-02 1994-06-14 Behr Michael I Systems using superimposed, orthogonal buried servo signals
US5325370A (en) 1991-11-12 1994-06-28 Storage Technology Corporation Method and apparatus for recording data on magnetic tape media
US5369641A (en) 1991-11-12 1994-11-29 Storage Technology Corporation Method and apparatus for detecting and correcting errors in data on magnetic tape media
US5566032A (en) 1991-11-12 1996-10-15 Storage Technology Corporation Method for utilizing a longitudinal track on a helical scan tape data storage system to provide a fast search capability
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
US5478021A (en) 1993-10-05 1995-12-26 Storage Technology Corporation Apparatus and method for optimized threading of a tape along a curvilinear tape path
US5969898A (en) * 1997-10-01 1999-10-19 Storage Technology Corporation Method and system for reading data that is unreadable by a tape drive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550351A (en) * 1982-03-31 1985-10-29 Rca Corporation Adaptive automatic scan tracking system
EP0508827A2 (en) * 1991-04-11 1992-10-14 Sony Corporation Tracking control device
US5274515A (en) * 1991-04-11 1993-12-28 Sony Corporation Tracking control device for a video tape recorder

Also Published As

Publication number Publication date
EP1166261A2 (en) 2002-01-02
DE60000453D1 (en) 2002-10-17
US6366422B1 (en) 2002-04-02
WO2000060581A2 (en) 2000-10-12
JP2002541605A (en) 2002-12-03
DE60000453T2 (en) 2003-11-20
AU4190800A (en) 2000-10-23
EP1166261B1 (en) 2002-09-11

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