JP2011175721A - データ回復のためのシステムおよび方法 - Google Patents

データ回復のためのシステムおよび方法 Download PDF

Info

Publication number
JP2011175721A
JP2011175721A JP2010257420A JP2010257420A JP2011175721A JP 2011175721 A JP2011175721 A JP 2011175721A JP 2010257420 A JP2010257420 A JP 2010257420A JP 2010257420 A JP2010257420 A JP 2010257420A JP 2011175721 A JP2011175721 A JP 2011175721A
Authority
JP
Japan
Prior art keywords
data
circuit
storage medium
location
forced
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.)
Pending
Application number
JP2010257420A
Other languages
English (en)
Japanese (ja)
Other versions
JP2011175721A5 (enExample
Inventor
George Mathew
マシュー ジョージ
Shaohau Yang
ヤング シャオフア
Haiteo Xia
ハイタオ，シア
Nenad Miladinovic
ミラディノヴィック ネナド
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.)
LSI Corp
Original Assignee
LSI 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 LSI Corp filed Critical LSI Corp
Publication of JP2011175721A publication Critical patent/JP2011175721A/ja
Publication of JP2011175721A5 publication Critical patent/JP2011175721A5/ja
Pending legal-status Critical Current

Links

Images

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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • 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
    • G11B5/59605—Circuits
    • G11B5/59616—Synchronisation; Clocking
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/33—Synchronisation based on error coding or decoding
    • 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
    • G11B20/14—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
    • G11B2020/1476—Synchronisation patterns; Coping with defects 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • G11B2020/185—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information using an low density parity check [LDPC] code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP2010257420A 2010-02-24 2010-11-18 データ回復のためのシステムおよび方法 Pending JP2011175721A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/712,136 2010-02-24
US12/712,136 US20110205653A1 (en) 2010-02-24 2010-02-24 Systems and Methods for Data Recovery

Publications (2)

Publication Number Publication Date
JP2011175721A true JP2011175721A (ja) 2011-09-08
JP2011175721A5 JP2011175721A5 (enExample) 2013-11-07

Family

ID=42830660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010257420A Pending JP2011175721A (ja) 2010-02-24 2010-11-18 データ回復のためのシステムおよび方法

Country Status (6)

Country Link
US (1) US20110205653A1 (enExample)
EP (1) EP2360696A1 (enExample)
JP (1) JP2011175721A (enExample)
KR (1) KR20110097575A (enExample)
CN (1) CN102163464A (enExample)
TW (1) TW201137865A (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8949701B2 (en) 2008-09-23 2015-02-03 Agere Systems Inc. Systems and methods for low latency media defect detection
US8631300B2 (en) * 2011-12-12 2014-01-14 Lsi Corporation Systems and methods for scalable data processing shut down
US9129653B2 (en) 2012-04-20 2015-09-08 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for calibration coasting in a data processing system
US8819521B2 (en) 2012-04-30 2014-08-26 Lsi Corporation Systems and methods for short media defect detection using non-binary coded information
US8675297B2 (en) 2012-06-15 2014-03-18 Lsi Corporation Media defect classification
US9076492B2 (en) 2012-07-12 2015-07-07 Lsi Corporation Systems and methods for rapid erasure retry decoding
US8826110B2 (en) 2012-07-17 2014-09-02 Lsi Corporation Systems and methods for defect scanning
US8732562B2 (en) 2012-07-25 2014-05-20 Lsi Corporation Systems and methods for improved short media defect detection
US8972800B2 (en) * 2012-07-30 2015-03-03 Lsi Corporation Systems and methods for enhanced media defect detection
US9245586B2 (en) 2012-10-18 2016-01-26 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for short media defect detection using multi-iteration soft data feedback
US8996970B2 (en) 2012-10-24 2015-03-31 Lsi Corporation Systems and methods for positive feedback short media defect detection
US8687301B1 (en) * 2013-01-08 2014-04-01 Lsi Corporation Parallel no-sync-mark retry
US9244752B2 (en) 2013-05-02 2016-01-26 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for detecting media flaws
US8917468B1 (en) 2013-06-06 2014-12-23 Lsi Corporation Systems and methods for media defect detection with pattern qualification
US9804919B2 (en) 2015-07-20 2017-10-31 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for correlation based data alignment
JP2018160302A (ja) 2017-03-23 2018-10-11 株式会社東芝 ストレージ装置及びコントローラ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192076A (ja) * 1989-01-19 1990-07-27 Nec Corp 位相引込み制御回路
JP2000123308A (ja) * 1998-10-16 2000-04-28 Fujitsu Ltd 磁気ディスク装置とそれで使われるデータ読出方法
WO2004053873A1 (ja) * 2002-12-10 2004-06-24 Fujitsu Limited データ記録再生システム
US20080262643A1 (en) * 2007-04-17 2008-10-23 Broadcom Corporation, A California Corporation Defect detector for hard disk drive and methods for use therewith
JP2011018401A (ja) * 2009-07-09 2011-01-27 Toshiba Corp ディスク記憶装置及びデータ検出方法

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5416760A (en) * 1991-12-16 1995-05-16 Advanced Micro Devices, Inc. Recovery of data from optical data disk sectors having missing or defective synchronization information
US5802069A (en) * 1995-11-13 1998-09-01 Intel Corporation Implementing mass storage device functions using host processor memory
JP3310185B2 (ja) * 1996-11-21 2002-07-29 松下電器産業株式会社 誤り訂正装置
KR100258332B1 (ko) * 1997-12-26 2000-06-01 윤종용 싱크검출장치와 그에 따른 광 디스크 재생장치
US6557113B1 (en) * 1999-10-26 2003-04-29 Iomega Corporation Synchronization recovery technique for storage media
US6301679B1 (en) * 1999-10-28 2001-10-09 Seagate Technology Llc Sync byte padding
JP3869365B2 (ja) * 2000-07-21 2007-01-17 富士通株式会社 ディスク記録装置、および記録ディスクのセクタ交替方法
US6738948B2 (en) * 2001-04-09 2004-05-18 Motorola, Inc. Iteration terminating using quality index criteria of turbo codes
US6691263B2 (en) * 2001-05-03 2004-02-10 Agere Systems Inc. Interative decoding based on dominant error events
JP4198904B2 (ja) * 2001-06-11 2008-12-17 富士通株式会社 記録再生装置、信号復号回路、エラー訂正方法、及び反復型復号器
US7440208B1 (en) * 2001-09-21 2008-10-21 Maxtor Corporation Flexible partial response targets for data detectors
WO2003030168A1 (en) * 2001-10-02 2003-04-10 Seagate Technology Llc Method and apparatus for detecting media defects
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
US7154936B2 (en) * 2001-12-03 2006-12-26 Qualcomm, Incorporated Iterative detection and decoding for a MIMO-OFDM system
JP4017883B2 (ja) * 2002-02-20 2007-12-05 株式会社日立グローバルストレージテクノロジーズ 欠陥検出方法および欠陥検出装置ならびに情報記録再生装置および磁気ディスク装置
US7359313B2 (en) * 2002-06-24 2008-04-15 Agere Systems Inc. Space-time bit-interleaved coded modulation for wideband transmission
US7254192B2 (en) * 2002-07-12 2007-08-07 Texas Instruments Incorporated Iterative detection in MIMO systems
JP3749889B2 (ja) * 2002-10-17 2006-03-01 株式会社東芝 Ｐｒｍｌ検出を適用する信号処理デバイス、同デバイスを備えたディスク記憶装置、及び同装置におけるフィードバック制御のための信号処理方法
US7277368B2 (en) * 2002-11-11 2007-10-02 Matsushita Electric Industrial Co., Ltd. Playback method, playback control circuit and playback apparatus for a recording medium
JP4499372B2 (ja) * 2003-04-30 2010-07-07 株式会社リコー 情報記録方法と情報再生方法と情報記録装置と情報再生装置とコンピュータ読み取り可能な記録媒体
EP1619673A4 (en) * 2003-04-30 2008-10-08 Ricoh Kk METHOD AND DEVICE FOR RECORDING INFORMATION, METHOD AND DEVICE FOR PLAYING INFORMATION AND RECORDING MEDIA
JP4095504B2 (ja) * 2003-07-31 2008-06-04 株式会社東芝 ディスク記憶装置及びシンクマーク書込み方法
US7168030B2 (en) * 2003-10-17 2007-01-23 Telefonaktiebolaget Lm Ericsson (Publ) Turbo code decoder with parity information update
EP1605597A1 (en) * 2004-06-03 2005-12-14 STMicroelectronics N.V. Method and system for blindly detecting a shared channel out of a plurality of shared channels received in parallel
KR20070025145A (ko) * 2005-08-31 2007-03-08 삼성전자주식회사 소프트 복호화 방법 및 장치, 에러 정정 방법 및 장치,소프트 출력 방법 및 장치
US7441174B2 (en) * 2005-09-07 2008-10-21 The University Of Hong Kong Embedded state metric storage for MAP decoder of turbo codes
US7752523B1 (en) * 2006-02-13 2010-07-06 Marvell International Ltd. Reduced-complexity decoding of parity check codes
FR2909499B1 (fr) * 2006-12-01 2009-01-16 Commissariat Energie Atomique Procede et dispositif de decodage pour codes ldpc, et appareil de communication comprenant un tel dispositif
US7702973B2 (en) * 2007-01-05 2010-04-20 Broadcom Corporation Modified defect scan over sync mark/preamble field
US8359522B2 (en) * 2007-05-01 2013-01-22 Texas A&M University System Low density parity check decoder for regular LDPC codes
EP2168246A4 (en) * 2007-10-01 2013-06-05 Agere Systems Inc ARRANGEMENTS AND METHOD FOR DETECTING ERRORS OF MEDIA
US8161357B2 (en) * 2008-03-17 2012-04-17 Agere Systems Inc. Systems and methods for using intrinsic data for regenerating data from a defective medium
US8095855B2 (en) * 2008-03-17 2012-01-10 Agere Systems Inc. Systems and methods for regenerating data from a defective medium
US7849385B2 (en) * 2008-04-29 2010-12-07 Agere Systems Inc. Systems and methods for media defect detection utilizing correlated DFIR and LLR data
US8121224B2 (en) * 2008-04-29 2012-02-21 Agere Systems Inc. Systems and methods for filter based media defect detection
US8149527B2 (en) * 2008-04-29 2012-04-03 Agere Systems Inc. Systems and methods for reducing attenuation of information derived from a defective medium
US8139457B2 (en) * 2008-09-23 2012-03-20 Agere Systems Inc. Systems and methods for low latency media defect detection
US8190831B2 (en) * 2008-10-31 2012-05-29 Lsi Corporation Methods and apparatus for detecting a syncMark in a hard disk drive
US7952824B2 (en) * 2009-03-06 2011-05-31 Agere Systems Inc. Systems and methods for defective media region identification
US8411537B2 (en) * 2009-03-06 2013-04-02 Agere Systems Inc. Systems and methods for recovering information from a defective medium
US8219892B2 (en) * 2009-03-06 2012-07-10 Agere Systems Inc. Systems and methods for enhanced media defect detection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192076A (ja) * 1989-01-19 1990-07-27 Nec Corp 位相引込み制御回路
JP2000123308A (ja) * 1998-10-16 2000-04-28 Fujitsu Ltd 磁気ディスク装置とそれで使われるデータ読出方法
WO2004053873A1 (ja) * 2002-12-10 2004-06-24 Fujitsu Limited データ記録再生システム
US20080262643A1 (en) * 2007-04-17 2008-10-23 Broadcom Corporation, A California Corporation Defect detector for hard disk drive and methods for use therewith
JP2011018401A (ja) * 2009-07-09 2011-01-27 Toshiba Corp ディスク記憶装置及びデータ検出方法

Also Published As

Publication number Publication date
CN102163464A (zh) 2011-08-24
US20110205653A1 (en) 2011-08-25
TW201137865A (en) 2011-11-01
EP2360696A1 (en) 2011-08-24
KR20110097575A (ko) 2011-08-31

Similar Documents

Publication Publication Date Title
JP2011175721A (ja) データ回復のためのシステムおよび方法
US8345369B2 (en) Systems and methods for data recovery using enhanced sync mark location
TWI455117B (zh) 在硬碟機中偵測同步標記之方法及裝置
US7733591B2 (en) Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversion
US20110043938A1 (en) Systems and Methods for Fly-Height Control Using Servo Data
US7032127B1 (en) Method and apparatus for identifying defective areas on a disk surface of a disk drive based on defect density
TWI529705B (zh) 資料解碼器電路、資料編碼器電路及資料處理電路
US10297281B1 (en) Servo sector detection
US20040168102A1 (en) Apparatus and method for verifying erasure correction function
JP5764814B2 (ja) 極値距離メトリックの位置に基づく同期マーク検出のための方法および装置
US20080165444A1 (en) Baseline popping noise detection circuit
US7733590B2 (en) Optimal synchronization mark/address mark construction
US8908307B1 (en) Systems and methods for hard disk drive region based data encoding
JP2005122884A (ja) 記録媒体に対する欠陥の操作
CN104834476B (zh) 基于段结束标记的数据对准的系统和方法
US20020023248A1 (en) Medium defect detection method and data storage apparatus
US9804919B2 (en) Systems and methods for correlation based data alignment
US9076492B2 (en) Systems and methods for rapid erasure retry decoding
US6574756B1 (en) Method and apparatus for identifying the start of a data field using a fault tolerant sync word
US8386827B2 (en) Systems and methods for signal delay and alignment
US8917468B1 (en) Systems and methods for media defect detection with pattern qualification
US8874410B2 (en) Systems and methods for pattern detection
US8995072B1 (en) Servo system with signal to noise ratio marginalization
US20140168810A1 (en) Systems and Methods for Adaptive Threshold Pattern Detection
US8861107B2 (en) Systems and methods for burst demodulation

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20120710

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130918

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130918

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20140529

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140603

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20140717

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20140718

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140815

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140909

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20150106