SG64475A1 - Method and apparatus for encoding digital servo information in a servo burst - Google Patents

Method and apparatus for encoding digital servo information in a servo burst

Info

Publication number
SG64475A1
SG64475A1 SG1998000379A SG1998000379A SG64475A1 SG 64475 A1 SG64475 A1 SG 64475A1 SG 1998000379 A SG1998000379 A SG 1998000379A SG 1998000379 A SG1998000379 A SG 1998000379A SG 64475 A1 SG64475 A1 SG 64475A1
Authority
SG
Singapore
Prior art keywords
servo
encoding digital
burst
information
servo information
Prior art date
Application number
SG1998000379A
Other languages
English (en)
Inventor
Louis Joseph Serrano
Mantle Man-Hon Yu
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 SG64475A1 publication Critical patent/SG64475A1/en

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
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • 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
    • 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
    • G11B5/59655—Sector, sample or burst servo format
    • 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
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
    • 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
SG1998000379A 1997-03-07 1998-02-20 Method and apparatus for encoding digital servo information in a servo burst SG64475A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/813,775 US6049438A (en) 1997-03-07 1997-03-07 Method and apparatus for encoding digital servo information in a servo burst

Publications (1)

Publication Number Publication Date
SG64475A1 true SG64475A1 (en) 1999-04-27

Family

ID=25213351

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1998000379A SG64475A1 (en) 1997-03-07 1998-02-20 Method and apparatus for encoding digital servo information in a servo burst

Country Status (4)

Country Link
US (1) US6049438A (ja)
JP (1) JP3761703B2 (ja)
KR (1) KR100292293B1 (ja)
SG (1) SG64475A1 (ja)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60030653T2 (de) * 1999-04-20 2007-09-06 Koninklijke Philips Electronics N.V. Servoformat für platten, vorzugsweise festplatten
US6480984B1 (en) * 1999-06-23 2002-11-12 Agere Systems Inc. Rate (M/N) code encoder, detector, and decoder for control data
US6606728B1 (en) * 1999-06-23 2003-08-12 Agere Systems Inc. Rate (M/N) code encoder, detector, and decoder for control data
JP2001110027A (ja) * 1999-10-08 2001-04-20 Hitachi Ltd 磁気記憶装置
JP3683155B2 (ja) * 2000-03-08 2005-08-17 富士通株式会社 ディスク装置のヘッド位置決め制御方法及び装置
US6873483B2 (en) * 2002-02-07 2005-03-29 Hitachi Global Storage Technologies Netherlands B.V. Disk drive with servo synchronous recording
US7242546B2 (en) * 2003-10-13 2007-07-10 Seagate Technology Llc Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groups
JP2006147096A (ja) * 2004-11-22 2006-06-08 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク媒体、磁気ディスク装置、及び磁気ディスク媒体の回転位置検出方法
US7405893B2 (en) * 2005-09-21 2008-07-29 Seagate Technology Llc Data storage medium with optimized servo format
JP4327824B2 (ja) * 2006-06-30 2009-09-09 株式会社東芝 磁気ディスク装置、サーボ書込み方法及び検査方法
US7538969B2 (en) * 2006-08-23 2009-05-26 Imation Corp. Servo pattern with encoded data
US7715137B2 (en) * 2006-10-19 2010-05-11 Hitachi Global Storage Technologies Netherlands B.V. Servo patterns for patterned media
US7916415B1 (en) 2008-03-27 2011-03-29 Western Digital Technologies, Inc. Disk drive decoding binary sequence from phases of servo bursts
US7710676B1 (en) 2008-03-27 2010-05-04 Western Digital Technologies, Inc. Disk drive comprising gray code implemented with servo bursts
US8947809B2 (en) 2008-09-19 2015-02-03 Seagate Technology Llc Encoding scheme for bit patterned media
US8824079B2 (en) * 2008-09-15 2014-09-02 Seagate Technology Llc Servo patterns for bit patterned media with multiple dots per servo period
US7920354B2 (en) * 2008-09-15 2011-04-05 Seagate Technology Llc Phase servo patterns for bit patterned media
US20110051286A1 (en) * 2009-09-01 2011-03-03 Seagate Technology Llc Writing data on alternating magnetic and nonmagnetic stripes of a servo pattern
US7961424B2 (en) * 2009-10-30 2011-06-14 International Business Machines Corporation Multilevel pulse position modulation for efficient encoding of information into servo patterns
US9384779B2 (en) * 2009-12-18 2016-07-05 HGST Netherlands B.V. Information storage device with multiple-use fields in servo pattern
US8054568B2 (en) * 2010-02-24 2011-11-08 International Business Machines Corporation Synchronization of symmetric timing based servo bursts

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195320A (en) * 1978-05-15 1980-03-25 International Business Machines Corporation Record track identification and following
US4783705A (en) * 1986-02-27 1988-11-08 Quantum Corporation High capacity disk file with embedded sector servo and SCSI interface
US4669004A (en) * 1986-02-27 1987-05-26 Quantum Corporation High capacity disk file with embedded sector servo
JPH04302864A (ja) * 1991-03-29 1992-10-26 Toshiba Corp 磁気記録再生装置のサーボデータ記録方法
JP2625609B2 (ja) * 1991-07-10 1997-07-02 インターナショナル・ビジネス・マシーンズ・コーポレイション ディスク記憶装置
US5369535A (en) * 1992-03-25 1994-11-29 International Business Machines Corporation Fixed block architecture disk file with improved position identification and error handling
US5600499A (en) * 1993-04-09 1997-02-04 Western Digital Corporation Tri-bit encoding for disk drive servo track ID information
US5523903A (en) * 1993-12-23 1996-06-04 International Business Machines Corporation Sector architecture for fixed block disk drive
US5825579A (en) * 1996-04-04 1998-10-20 International Business Machines Corporation Disk drive servo sensing gain normalization and linearization

Also Published As

Publication number Publication date
KR19980079440A (ko) 1998-11-25
US6049438A (en) 2000-04-11
KR100292293B1 (ko) 2002-08-08
JP3761703B2 (ja) 2006-03-29
JPH10255417A (ja) 1998-09-25

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