HK202896A - A data recovery method in a magnetic disk data storage device - Google Patents
A data recovery method in a magnetic disk data storage deviceInfo
- Publication number
- HK202896A HK202896A HK202896A HK202896A HK202896A HK 202896 A HK202896 A HK 202896A HK 202896 A HK202896 A HK 202896A HK 202896 A HK202896 A HK 202896A HK 202896 A HK202896 A HK 202896A
- Authority
- HK
- Hong Kong
- Prior art keywords
- storage device
- magnetic disk
- recovery method
- data storage
- data recovery
- Prior art date
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
- G11B27/36—Monitoring, i.e. supervising the progress 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
- 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
- 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
- G11B20/1879—Direct read-after-write methods
-
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic 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
- G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/0008—Magnetic conditionning of heads, e.g. biasing
-
- 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
- G11B2020/183—Testing wherein at least one additional attempt is made to read or write the data when a first attempt is unsuccessful
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Digital Magnetic Recording (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/494,047 US5189566A (en) | 1990-03-15 | 1990-03-15 | Method and apparatus for recovering data |
Publications (1)
Publication Number | Publication Date |
---|---|
HK202896A true HK202896A (en) | 1996-11-15 |
Family
ID=23962806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK202896A HK202896A (en) | 1990-03-15 | 1996-11-07 | A data recovery method in a magnetic disk data storage device |
Country Status (6)
Country | Link |
---|---|
US (1) | US5189566A (xx) |
EP (1) | EP0447246B1 (xx) |
JP (1) | JP2614368B2 (xx) |
DE (1) | DE69117550T2 (xx) |
HK (1) | HK202896A (xx) |
SG (1) | SG43730A1 (xx) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0572067B1 (en) * | 1992-05-26 | 1997-12-17 | Koninklijke Philips Electronics N.V. | System for recording and/or reproducing signals, and reset cassette suitable for use in the system |
US5424881A (en) | 1993-02-01 | 1995-06-13 | Cirrus Logic, Inc. | Synchronous read channel |
US5379162A (en) * | 1993-08-19 | 1995-01-03 | International Business Machines Corporation | Customized data recovery procedures selected responsive to readback errors and transducer head and disk parameters |
US5619384A (en) * | 1994-01-25 | 1997-04-08 | Storage Technology Corporation | System for providing transparent storage of data embedded within predefined recording formats |
JPH07287942A (ja) * | 1994-04-15 | 1995-10-31 | Fujitsu Ltd | ディスク装置、及びディスク装置のデータチェック再試行方法 |
US5661614A (en) * | 1994-05-31 | 1997-08-26 | International Business Machines Corporation | Method and apparatus for error recovery for unstable magnetorestrictive heads |
US6038679A (en) * | 1994-11-30 | 2000-03-14 | International Business Machines Corporation | Adaptive data recovery method and apparatus |
US5903411A (en) * | 1995-02-14 | 1999-05-11 | Fujitsu Limited | Method for reliably positioning a head in a disk drive to a guard band area |
JPH08255432A (ja) * | 1995-03-20 | 1996-10-01 | Fujitsu Ltd | 記録再生装置及び交代処理方法 |
KR100264631B1 (ko) * | 1995-06-29 | 2000-10-02 | 포만 제프리 엘 | 신호 기록 재생 장치 및 에러 회복 처리 실행 순서 변경 방법 |
JP2986083B2 (ja) * | 1995-09-21 | 1999-12-06 | 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 | デイスク装置およびデイスク装置における読み取り不良回復方法 |
JP3219988B2 (ja) * | 1995-12-25 | 2001-10-15 | 株式会社東芝 | セキュリティ機能を有するディスク装置及び同装置におけるパスワード管理方法 |
TW358949B (en) * | 1996-03-19 | 1999-05-21 | Hitachi Global Storage Tech | Magnetic disc device with dummy write function |
GB2329805B (en) * | 1996-05-15 | 2000-09-20 | Seagate Technology | Read error recovery utilizing ECC and read channel quality indicators |
US5721816A (en) * | 1996-07-29 | 1998-02-24 | Kusbel; Paul F. | Adaptive recovery of read and write errors in a disc drive |
JP3130258B2 (ja) | 1996-10-25 | 2001-01-31 | インターナショナル・ビジネス・マシーンズ・コーポレ−ション | ディスク装置及びデータ・リアサイン方法 |
KR100233401B1 (ko) * | 1996-12-31 | 1999-12-01 | 윤종용 | 박막헤드를 구비하는 디스크 구동 기록장치의 위글 노이즈 제거방법 |
JP3213272B2 (ja) | 1997-12-25 | 2001-10-02 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Gmrセンサを使用した情報記録再生装置のエラー回復方法および装置 |
US6314433B1 (en) * | 1998-06-12 | 2001-11-06 | Hewlett-Packard Company | Frame-based heroic data recovery |
US6324029B1 (en) * | 1998-06-29 | 2001-11-27 | International Business Machines Corporation | Method and system for GMR sensor reset pulse application |
US6401229B1 (en) * | 1998-09-21 | 2002-06-04 | Hewlett-Packard Company | System and method for data error recovery on optical media utilizing hierarchical recovery techniques |
JP3737293B2 (ja) * | 1998-10-14 | 2006-01-18 | アルプス電気株式会社 | ディスク装置 |
US6249394B1 (en) * | 1999-02-12 | 2001-06-19 | International Business Machines Corporation | Method and apparatus for providing amplitude instability data recovery for AMR/GMR heads |
US6757118B1 (en) * | 1999-03-26 | 2004-06-29 | Seagate Technology Llc | Apparatus and method for wiggle recovery in a disc drive having an embedded servo |
US6332204B1 (en) | 1999-03-31 | 2001-12-18 | International Business Machines Corporation | Recovering and relocating unreliable disk sectors when encountering disk drive read errors |
US6247152B1 (en) | 1999-03-31 | 2001-06-12 | International Business Machines Corporation | Relocating unreliable disk sectors when encountering disk drive read errors with notification to user when data is bad |
US6426928B1 (en) | 1999-03-31 | 2002-07-30 | International Business Machines Corporation | Ability to distinguish true disk write errors |
US6606210B1 (en) | 1999-04-21 | 2003-08-12 | Seagate Technology Llc | Intelligent sector recovery algorithm |
US6556933B1 (en) | 1999-10-28 | 2003-04-29 | Seagate Technology Llc | Transducer instability detection in a digital channel |
US6993251B1 (en) | 2000-03-31 | 2006-01-31 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for concealing disk soft errors in recorded digital television signals |
US6836453B2 (en) | 2002-01-16 | 2004-12-28 | International Business Machines Corporation | Re-read of data read prior to read inhibit for data recovery and validation in a sampled position data storage device |
US6777929B2 (en) | 2002-08-27 | 2004-08-17 | International Business Machines Corporation | Cross talk bit error rate testing of a magnetic head |
US7490261B2 (en) * | 2003-12-18 | 2009-02-10 | Seagate Technology Llc | Background media scan for recovery of data errors |
US20060242450A1 (en) * | 2005-04-11 | 2006-10-26 | Li-Lien Lin | Methods and apparatuses for selectively rebuffering and decoding a portion of a data block read from an optical storage medium |
JP2008010113A (ja) * | 2006-06-30 | 2008-01-17 | Fujitsu Ltd | 磁気ディスク制御装置、磁気ディスク装置および読取り障害修復方法 |
US8769380B1 (en) * | 2010-11-02 | 2014-07-01 | Marvell International Ltd. | Methods and apparatus for error recovery in memory systems employing iterative codes |
CN104657088B (zh) * | 2015-02-06 | 2018-01-23 | 深圳市锐明技术股份有限公司 | 一种硬盘坏块信息的获取方法及装置 |
US9997176B1 (en) | 2016-10-25 | 2018-06-12 | Seagate Technology Llc | Activating a magnetic writer to recover from read errors due to reader instability |
US9978403B1 (en) | 2017-02-17 | 2018-05-22 | Seagate Technology Llc | Changing write coil current in response to reader instability |
US11790949B2 (en) | 2022-03-02 | 2023-10-17 | Western Digital Technologies, Inc. | Data storage device integrating wedge repeatable runout (WRRO) learning into data recovery procedure (DRP) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2309012A1 (fr) * | 1975-04-21 | 1976-11-19 | Ibm | Memoire a disque magnetique flexible |
US4516165A (en) * | 1982-12-27 | 1985-05-07 | International Business Machines Corporation | Error recovery procedure using selective erasure |
JPS62137772A (ja) * | 1985-12-11 | 1987-06-20 | Hitachi Ltd | 磁気記憶サブシステムの読出しエラ−回復方法 |
US4821125A (en) * | 1986-06-11 | 1989-04-11 | International Business Machines Corporation | Compensation of write current adn delta-V for recording component and radial position |
JPS63155473A (ja) * | 1986-12-19 | 1988-06-28 | Nec Corp | 磁気デイスク制御装置 |
JP2557941B2 (ja) * | 1988-04-04 | 1996-11-27 | 株式会社日立製作所 | リードエラー回復機能を有する磁気記録装置 |
JPH01263903A (ja) * | 1988-04-14 | 1989-10-20 | Hitachi Ltd | 磁気ディスク装置及びその制御方法 |
EP0339874B1 (en) * | 1988-04-29 | 1995-07-12 | Quantum Corporation | Thin film head read recovery |
JPH0227572A (ja) * | 1988-07-15 | 1990-01-30 | Nec Corp | 光ディスク装置の交替処理方式 |
US4970621A (en) * | 1988-09-09 | 1990-11-13 | Hewlett-Packard Company | Demagnetization of thin film magnetic recording transducers utilizing a decreasing AC current |
-
1990
- 1990-03-15 US US07/494,047 patent/US5189566A/en not_active Expired - Lifetime
-
1991
- 1991-02-15 JP JP3042185A patent/JP2614368B2/ja not_active Expired - Fee Related
- 1991-03-14 DE DE69117550T patent/DE69117550T2/de not_active Expired - Fee Related
- 1991-03-14 EP EP91302190A patent/EP0447246B1/en not_active Expired - Lifetime
- 1991-03-14 SG SG1996000273A patent/SG43730A1/en unknown
-
1996
- 1996-11-07 HK HK202896A patent/HK202896A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0447246A3 (en) | 1991-12-27 |
DE69117550D1 (de) | 1996-04-11 |
DE69117550T2 (de) | 1996-09-19 |
EP0447246B1 (en) | 1996-03-06 |
US5189566A (en) | 1993-02-23 |
SG43730A1 (en) | 1997-11-14 |
JPH04219677A (ja) | 1992-08-10 |
JP2614368B2 (ja) | 1997-05-28 |
EP0447246A2 (en) | 1991-09-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20100314 |