CN102201265A - 利用软判决检测硬盘缺陷区域 - Google Patents
利用软判决检测硬盘缺陷区域 Download PDFInfo
- Publication number
- CN102201265A CN102201265A CN2011100693001A CN201110069300A CN102201265A CN 102201265 A CN102201265 A CN 102201265A CN 2011100693001 A CN2011100693001 A CN 2011100693001A CN 201110069300 A CN201110069300 A CN 201110069300A CN 102201265 A CN102201265 A CN 102201265A
- Authority
- CN
- China
- Prior art keywords
- value
- signal value
- decision
- soft
- machine
- 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.)
- Granted
Links
- 230000007547 defect Effects 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims description 17
- 238000005070 sampling Methods 0.000 description 21
- 230000007774 longterm Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
-
- 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
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Digital Magnetic Recording (AREA)
- Error Detection And Correction (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/731,381 | 2010-03-25 | ||
US12/731,381 US8089713B2 (en) | 2010-03-25 | 2010-03-25 | Detection of hard-disc defect regions using soft decisions |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102201265A true CN102201265A (zh) | 2011-09-28 |
CN102201265B CN102201265B (zh) | 2013-11-06 |
Family
ID=43821985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011100693001A Active CN102201265B (zh) | 2010-03-25 | 2011-03-22 | 利用软判决检测硬盘缺陷区域 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8089713B2 (zh) |
EP (1) | EP2372714A3 (zh) |
JP (1) | JP5134105B2 (zh) |
KR (1) | KR101292031B1 (zh) |
CN (1) | CN102201265B (zh) |
TW (1) | TWI433139B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102801444A (zh) * | 2012-07-06 | 2012-11-28 | 华为技术有限公司 | 一种模拟均衡装置及方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11658671B2 (en) * | 2021-09-22 | 2023-05-23 | Apple Inc. | Latency reduction in analog-to-digital converter-based receiver circuits |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1580750A (zh) * | 2003-08-08 | 2005-02-16 | 松下电器产业株式会社 | 缺陷检测装置 |
WO2009045203A1 (en) * | 2007-10-01 | 2009-04-09 | Agere Systems Inc. | Systems and methods for media defect detection |
US20090271670A1 (en) * | 2008-04-29 | 2009-10-29 | Agere Systems Inc. | Systems and Methods for Media Defect Detection Utilizing Correlated DFIR and LLR Data |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5751510A (en) | 1996-01-02 | 1998-05-12 | International Business Machines Corporation | Method and apparatus for restoring a thermal response signal of a magnetoresistive head |
KR100527238B1 (ko) * | 1997-07-26 | 2006-02-08 | 삼성전자주식회사 | 소프트 디펙 검출을 통한 데이타섹터 재할당방법 |
JP3545579B2 (ja) * | 1997-09-30 | 2004-07-21 | 株式会社日立製作所 | 再生信号処理方法および再生信号処理回路ならびに磁気記憶装置 |
JP3349934B2 (ja) * | 1997-12-01 | 2002-11-25 | 富士通株式会社 | 磁気ディスク装置及びこの装置に使用するリードチャネルic |
US6446236B1 (en) * | 1999-10-13 | 2002-09-03 | Maxtor Corporation | Reading encoded information subject to random and transient errors |
US6791778B2 (en) * | 2000-09-14 | 2004-09-14 | Samsung Electronics Co., Inc. | Method and apparatus to detect and manage servo sectors with defect on servo pattern area in hard disk drives |
US6414806B1 (en) * | 2000-10-02 | 2002-07-02 | International Business Machines Corporation | Method for thermal asperity detection and compensation in disk drive channels |
JP3753951B2 (ja) * | 2001-05-31 | 2006-03-08 | 富士通株式会社 | データ再生装置における欠陥検出装置及びそのデータ再生装置 |
US6665134B2 (en) * | 2001-06-01 | 2003-12-16 | International Business Machines Corporation | Methods and apparatus for detection and analysis of an envelope of a frequency modulated readback signal in a magnetic storage system |
US6671111B2 (en) * | 2001-06-01 | 2003-12-30 | International Business Machines Corporation | Readback signal detection and analysis in a magnetic data storage system |
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 |
US7595948B1 (en) * | 2003-10-24 | 2009-09-29 | Marvell International Ltd. | Thermal asperity detection for perpendicular magnetic recording |
US7646556B1 (en) * | 2005-07-08 | 2010-01-12 | Seagate Technology Llc | Systems and methods for detecting flaws on a storage disk |
KR20070025145A (ko) * | 2005-08-31 | 2007-03-08 | 삼성전자주식회사 | 소프트 복호화 방법 및 장치, 에러 정정 방법 및 장치,소프트 출력 방법 및 장치 |
US7679853B2 (en) * | 2005-12-28 | 2010-03-16 | Agere Systems Inc. | Detection of signal disturbance in a partial response channel |
JP4652310B2 (ja) * | 2006-10-31 | 2011-03-16 | 富士通株式会社 | 復号器及び再生装置 |
US20080262643A1 (en) * | 2007-04-17 | 2008-10-23 | Broadcom Corporation, A California Corporation | Defect detector for hard disk drive and methods for use therewith |
JP2009217682A (ja) * | 2008-03-12 | 2009-09-24 | Yazaki Corp | 車両用表示装置 |
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 |
US8121224B2 (en) * | 2008-04-29 | 2012-02-21 | Agere Systems Inc. | Systems and methods for filter based media defect detection |
US8219892B2 (en) * | 2009-03-06 | 2012-07-10 | Agere Systems Inc. | Systems and methods for enhanced media defect detection |
-
2010
- 2010-03-25 US US12/731,381 patent/US8089713B2/en active Active
-
2011
- 2011-02-19 EP EP11001387.7A patent/EP2372714A3/en not_active Ceased
- 2011-03-07 TW TW100107608A patent/TWI433139B/zh not_active IP Right Cessation
- 2011-03-22 KR KR1020110025165A patent/KR101292031B1/ko not_active IP Right Cessation
- 2011-03-22 CN CN2011100693001A patent/CN102201265B/zh active Active
- 2011-03-25 JP JP2011066866A patent/JP5134105B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1580750A (zh) * | 2003-08-08 | 2005-02-16 | 松下电器产业株式会社 | 缺陷检测装置 |
WO2009045203A1 (en) * | 2007-10-01 | 2009-04-09 | Agere Systems Inc. | Systems and methods for media defect detection |
US20090271670A1 (en) * | 2008-04-29 | 2009-10-29 | Agere Systems Inc. | Systems and Methods for Media Defect Detection Utilizing Correlated DFIR and LLR Data |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102801444A (zh) * | 2012-07-06 | 2012-11-28 | 华为技术有限公司 | 一种模拟均衡装置及方法 |
CN102801444B (zh) * | 2012-07-06 | 2015-01-21 | 华为技术有限公司 | 一种模拟均衡装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2372714A3 (en) | 2015-04-15 |
EP2372714A2 (en) | 2011-10-05 |
KR101292031B1 (ko) | 2013-08-01 |
JP5134105B2 (ja) | 2013-01-30 |
CN102201265B (zh) | 2013-11-06 |
US20110235204A1 (en) | 2011-09-29 |
TW201142834A (en) | 2011-12-01 |
KR20110107751A (ko) | 2011-10-04 |
JP2011204348A (ja) | 2011-10-13 |
TWI433139B (zh) | 2014-04-01 |
US8089713B2 (en) | 2012-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8843813B2 (en) | Systems and methods for media defect detection | |
US6292912B1 (en) | Disk drive having built-in self-test system for characterizing performance of the drive | |
US8441753B2 (en) | Systems and methods for reducing low frequency loss in a magnetic storage device | |
KR101304187B1 (ko) | 하드―디스크 결함 영역들의 검출 및 분류를 위한 주파수―기반의 기계 구현 방법 및 장치 | |
US20100074078A1 (en) | Systems and Methods for Low Latency Media Defect Detection | |
CN102201264B (zh) | 基于量值的检测并对硬盘缺陷区域进行分类的方法 | |
US6175460B1 (en) | Magnetic recording and reproduction apparatus | |
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 | |
CN102201265B (zh) | 利用软判决检测硬盘缺陷区域 | |
US8386827B2 (en) | Systems and methods for signal delay and alignment | |
US8949701B2 (en) | Systems and methods for low latency media defect detection | |
Choi et al. | The Front-End LSI with a 5-Tap PRML for 2< cd0215f. gif> Reading and Writing of BD-R/RW/ROM |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) CORPORAT Free format text: FORMER OWNER: INFINEON TECHNOLOGIES CORP. Effective date: 20150806 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20150806 Address after: Singapore Singapore Patentee after: Avago Technologies General IP (Singapore) Pte. Ltd. Address before: California, USA Patentee before: LSI Corp. |
|
TR01 | Transfer of patent right |
Effective date of registration: 20181019 Address after: Singapore Singapore Patentee after: Avago Technologies General IP (Singapore) Pte. Ltd. Address before: Singapore Singapore Patentee before: Avago Technologies General IP (Singapore) Pte. Ltd. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201023 Address after: Singapore Singapore Patentee after: Broadcom International Pte. Ltd. Address before: Singapore Singapore Patentee before: Avago Technologies General IP (Singapore) Pte. Ltd. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230424 Address after: Singapore, Singapore Patentee after: Avago Technologies General IP (Singapore) Pte. Ltd. Address before: Singapore, Singapore Patentee before: Broadcom International Pte. Ltd. |
|
TR01 | Transfer of patent right |