JP2002542567A - ハードディスク用サーボフォーマット、好適にはハードディスク - Google Patents

ハードディスク用サーボフォーマット、好適にはハードディスク

Info

Publication number
JP2002542567A
JP2002542567A JP2000612947A JP2000612947A JP2002542567A JP 2002542567 A JP2002542567 A JP 2002542567A JP 2000612947 A JP2000612947 A JP 2000612947A JP 2000612947 A JP2000612947 A JP 2000612947A JP 2002542567 A JP2002542567 A JP 2002542567A
Authority
JP
Japan
Prior art keywords
bit sequence
agc
phase
disk device
field
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.)
Withdrawn
Application number
JP2000612947A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002542567A5 (https=
Inventor
ヨハネス ダブリュー エム ベルグマンス
コフィ エー エー マキンワ
ヨハネス オー フォールマン
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Publication of JP2002542567A publication Critical patent/JP2002542567A/ja
Publication of JP2002542567A5 publication Critical patent/JP2002542567A5/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • 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
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1232—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc sector, i.e. the minimal addressable physical data unit
    • 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
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
    • 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
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1281—Servo information
    • 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
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1281—Servo information
    • G11B2020/1282—Servo information in embedded servo fields
    • 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
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1287—Synchronisation pattern, e.g. VCO fields
    • 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
    • G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
    • G11B2020/1298—Enhancement of the signal quality
    • 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
    • G11B2220/2516—Hard disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Digital Magnetic Recording (AREA)
JP2000612947A 1999-04-20 2000-04-14 ハードディスク用サーボフォーマット、好適にはハードディスク Withdrawn JP2002542567A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99201246 1999-04-20
EP99201246.8 1999-04-20
PCT/EP2000/003411 WO2000063904A1 (en) 1999-04-20 2000-04-14 A servo format for disks, preferably hard disks

Publications (2)

Publication Number Publication Date
JP2002542567A true JP2002542567A (ja) 2002-12-10
JP2002542567A5 JP2002542567A5 (https=) 2007-06-21

Family

ID=8240126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000612947A Withdrawn JP2002542567A (ja) 1999-04-20 2000-04-14 ハードディスク用サーボフォーマット、好適にはハードディスク

Country Status (7)

Country Link
US (1) US6515812B1 (https=)
EP (1) EP1090393B1 (https=)
JP (1) JP2002542567A (https=)
KR (1) KR100639525B1 (https=)
DE (1) DE60030653T2 (https=)
TW (1) TW476933B (https=)
WO (1) WO2000063904A1 (https=)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6833972B2 (en) * 2001-10-26 2004-12-21 Matsushita Electric Industrial Co., Ltd. Method for reproducing phase information signals in an information recording device
EP1496512A1 (en) * 2003-07-09 2005-01-12 Deutsche Thomson-Brandt Gmbh Method for adaptive bit recovery
US7342734B1 (en) * 2004-09-02 2008-03-11 Maxtor Corporation Disk drives with radially aligned servo burst patterns that generate orthogonal contributions to a read signal and related demodulators and methods
US7206146B2 (en) 2004-10-27 2007-04-17 Hitachi Global Storage Technologies Netherlands B.V. Biphase magnetic pattern detector using multiple matched filters for hard disk drive
US7502193B2 (en) * 2005-02-28 2009-03-10 Hitachi Global Storage Technologies Netherlands B.V. Positioning of a magnetic head in a magnetic data recording device using a multiple sensor array
US7349167B2 (en) * 2005-07-27 2008-03-25 Seagate Technology Llc Utilizing track identification fields for timing recovery
US7660077B2 (en) * 2006-01-10 2010-02-09 Hitachi Global Storage Technologies Netherlands B.V. Method and system for reduction of off-track write errors in disk drives
US7333290B1 (en) 2006-08-03 2008-02-19 Western Digital Technologies, Inc. Magnetic disk in a disk drive and method having improved null servo burst phasing
US7643235B2 (en) 2006-09-28 2010-01-05 Seagate Technology Llc Synchronization for data communication
US8922923B2 (en) 2011-03-01 2014-12-30 Seagate Technology Llc Interleaved automatic gain control for asymmetric data signals
US9019641B2 (en) * 2012-12-13 2015-04-28 Lsi Corporation Systems and methods for adaptive threshold pattern detection
RU2656609C2 (ru) * 2013-11-01 2018-06-06 Хуавэй Текнолоджиз Ко., Лтд. Передающее устройство, приемное устройство и способ для формирования сигналов синхронизации
US9105289B1 (en) 2014-10-15 2015-08-11 Seagate Technology Llc Integrated servo field for memory device
US12183376B1 (en) * 2023-06-16 2024-12-31 Western Digital Technologies, Inc. Data read synchronization from phase modulated synchronization fields in a data storage device
US20260066919A1 (en) * 2024-09-04 2026-03-05 Nxp B.V. High-Speed Continuous-Time Delta-Sigma Modulator Including an Amplifier with Limited Gain

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024593A1 (de) 1990-08-02 1992-03-05 Sgs Thomson Microelectronics Verfahren und vorrichtung zur demodulation eines biphasenmodulierten signals
US5384671A (en) * 1993-12-23 1995-01-24 Quantum Corporation PRML sampled data channel synchronous servo detector
US5661760A (en) * 1995-10-23 1997-08-26 Quantum Corporation Wide biphase digital servo information detection, and estimation for disk drive using servo Viterbi detector
US5862005A (en) * 1994-10-11 1999-01-19 Quantum Corporation Synchronous detection of wide bi-phase coded servo information for disk drive
SG55370A1 (en) * 1996-09-09 1998-12-21 Texas Instruments Inc Servo demodulator and method for synchronous servo demodulation
US6049438A (en) * 1997-03-07 2000-04-11 International Business Machines Corporation Method and apparatus for encoding digital servo information in a servo burst
WO1999009546A2 (en) * 1997-08-15 1999-02-25 Seagate Technology, Inc. Constant density servo information in a disc drive

Also Published As

Publication number Publication date
US6515812B1 (en) 2003-02-04
TW476933B (en) 2002-02-21
KR20010053053A (ko) 2001-06-25
DE60030653D1 (de) 2006-10-26
WO2000063904A1 (en) 2000-10-26
EP1090393A1 (en) 2001-04-11
EP1090393B1 (en) 2006-09-13
KR100639525B1 (ko) 2006-10-31
DE60030653T2 (de) 2007-09-06

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