SG71034A1 - Improvements in self-servowriting timing pattern generation - Google Patents

Improvements in self-servowriting timing pattern generation

Info

Publication number
SG71034A1
SG71034A1 SG1997002589A SG1997002589A SG71034A1 SG 71034 A1 SG71034 A1 SG 71034A1 SG 1997002589 A SG1997002589 A SG 1997002589A SG 1997002589 A SG1997002589 A SG 1997002589A SG 71034 A1 SG71034 A1 SG 71034A1
Authority
SG
Singapore
Prior art keywords
servowriting
self
pattern generation
timing pattern
timing
Prior art date
Application number
SG1997002589A
Other languages
English (en)
Inventor
Timothy Joseph Chainer
Anthony Paul Praino
Mark Delorman Schultz
Bucknell Chapman Webb
Edward John Yarmchuk
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SG71034A1 publication Critical patent/SG71034A1/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • 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
    • G11B21/106—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 disks
    • 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
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5565—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for compensation of variations of physical parameters, e.g. temperature
    • 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
    • G11B5/596—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 disks
    • G11B5/59633—Servo formatting
SG1997002589A 1994-12-01 1995-11-10 Improvements in self-servowriting timing pattern generation SG71034A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34877394A 1994-12-01 1994-12-01

Publications (1)

Publication Number Publication Date
SG71034A1 true SG71034A1 (en) 2000-03-21

Family

ID=23369476

Family Applications (3)

Application Number Title Priority Date Filing Date
SG1995001806A SG34300A1 (en) 1994-12-01 1995-11-10 Improvements in self-servowriting timing pattern generation
SG1997002589A SG71034A1 (en) 1994-12-01 1995-11-10 Improvements in self-servowriting timing pattern generation
SG1997002591A SG67406A1 (en) 1994-12-01 1995-11-10 Improvements in self-servo writing timing pattern generation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SG1995001806A SG34300A1 (en) 1994-12-01 1995-11-10 Improvements in self-servowriting timing pattern generation

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG1997002591A SG67406A1 (en) 1994-12-01 1995-11-10 Improvements in self-servo writing timing pattern generation

Country Status (10)

Country Link
US (2) US5901003A (zh)
EP (1) EP0721184B1 (zh)
JP (2) JP3238057B2 (zh)
KR (1) KR0160001B1 (zh)
CN (9) CN1235194C (zh)
CA (1) CA2163053C (zh)
DE (1) DE69525323T2 (zh)
MY (1) MY115186A (zh)
SG (3) SG34300A1 (zh)
TW (1) TW280906B (zh)

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US6708161B2 (en) * 2000-09-26 2004-03-16 I2 Technologies Us, Inc. System and method for selective database indexing
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US7263515B1 (en) 2001-06-18 2007-08-28 I2 Technologies Us, Inc. Content enhancement in an electronic marketplace
US6754030B2 (en) 2001-06-27 2004-06-22 Seagate Technology Llc Optimal reader-to-writer offset measurement of a head in a disc drive for reduced track misregistration
US7346560B1 (en) 2001-06-29 2008-03-18 I2 Technologies Us, Inc. Protecting content from unauthorized reproduction
US7162453B1 (en) 2001-06-29 2007-01-09 I2 Technologies Us, Inc. Protecting content from unauthorized reproduction
JP3759711B2 (ja) * 2001-11-09 2006-03-29 富士通株式会社 磁気ディスクシステム
US7412424B1 (en) 2002-03-19 2008-08-12 I2 Technologies Us, Inc. Third party certification of content in electronic commerce transactions
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US7567403B2 (en) * 2002-04-18 2009-07-28 Seagate Technology Llc Bi-directional servo track writing to minimize sidewall writing at high skew angles
US7019926B2 (en) * 2002-06-27 2006-03-28 Hitachi Global Storage Technologies Netherlands B.V. Self-servo-writing multi-slot timing pattern
US6873488B2 (en) * 2002-10-24 2005-03-29 Seagate Technology Llc Enhanced MR offset with dynamic tuning range
US6924960B1 (en) * 2003-07-31 2005-08-02 Western Digital Technologies, Inc. Timing compensation in a self-servowriting system
US7061704B2 (en) * 2003-08-26 2006-06-13 Hitachi Global Storage Technologies Netherlands B.V. Techniques for detecting polarity reversals of a disk drive read/write head
JP2005078786A (ja) 2003-09-04 2005-03-24 Hitachi Global Storage Technologies Inc 磁気ディスク装置及びそのためのサーボパターン記録方法
US7347370B2 (en) * 2003-11-18 2008-03-25 Magtek, Inc. Self-aligning magnetic read head incorporating lift-up detection
US7265921B2 (en) * 2004-02-10 2007-09-04 Hitachi Global Storage Technologies Netherlands B.V. Method to increase the amount of customer data on a hard disk drive
US7193797B1 (en) * 2004-04-08 2007-03-20 Maxtor Corporation Method and apparatus for detecting and monitoring a bi-state head when self-servowriting a disk drive using spiral servo information
US7215514B1 (en) 2004-10-22 2007-05-08 Western Digital Technologies, Inc. Method of operating a disk drive including rotating a perpendicular write head to reduce a difference between skew and taper angles, and a disk drive
US7016140B1 (en) * 2004-11-16 2006-03-21 Hitachi Global Storage Technologies Netherlands B.V. Timing mark position error correction in self-servo write
US7489464B1 (en) 2005-02-02 2009-02-10 Western Digital Technologies, Inc. Servo writing a disk drive using a secondary actuator to control skew angle
CN100460823C (zh) * 2005-04-22 2009-02-11 阿尔卑斯电气株式会社 绝对角检测装置
US7365654B2 (en) * 2005-04-22 2008-04-29 Alps Electric Co., Ltd Absolute angle detection apparatus
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CA2730890C (en) 2008-07-17 2018-05-15 Critical Outcome Technologies Inc. Thiosemicarbazone inhibitor compounds and cancer treatment methods
CN101664909B (zh) * 2008-09-05 2012-01-04 胡厚飞 具角度定位功能的万向旋转扳手
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Also Published As

Publication number Publication date
JP3706543B2 (ja) 2005-10-12
CN1086830C (zh) 2002-06-26
KR960025626A (ko) 1996-07-20
CN1131798A (zh) 1996-09-25
CN1399249A (zh) 2003-02-26
EP0721184A2 (en) 1996-07-10
CN1399251A (zh) 2003-02-26
DE69525323D1 (de) 2002-03-21
CN1213405C (zh) 2005-08-03
CN1207703C (zh) 2005-06-22
CA2163053A1 (en) 1996-06-02
CN1399252A (zh) 2003-02-26
CN1235194C (zh) 2006-01-04
CN1207704C (zh) 2005-06-22
CN1397930A (zh) 2003-02-19
US5991115A (en) 1999-11-23
JP3238057B2 (ja) 2001-12-10
SG34300A1 (en) 1996-12-06
JPH08212527A (ja) 1996-08-20
CN1399254A (zh) 2003-02-26
CN1224005C (zh) 2005-10-19
EP0721184B1 (en) 2002-02-06
KR0160001B1 (ko) 1999-01-15
CN1213406C (zh) 2005-08-03
CN1397931A (zh) 2003-02-19
TW280906B (zh) 1996-07-11
JP2001243734A (ja) 2001-09-07
US5901003A (en) 1999-05-04
MY115186A (en) 2003-04-30
DE69525323T2 (de) 2002-10-02
CA2163053C (en) 2002-05-07
EP0721184A3 (zh) 1996-07-24
CN1399253A (zh) 2003-02-26
CN1399250A (zh) 2003-02-26
CN1201292C (zh) 2005-05-11
SG67406A1 (en) 1999-09-21

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