TW201137865A - Systems and methods for data recovery - Google Patents

Systems and methods for data recovery Download PDF

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Publication number
TW201137865A
TW201137865A TW099122006A TW99122006A TW201137865A TW 201137865 A TW201137865 A TW 201137865A TW 099122006 A TW099122006 A TW 099122006A TW 99122006 A TW99122006 A TW 99122006A TW 201137865 A TW201137865 A TW 201137865A
Authority
TW
Taiwan
Prior art keywords
data
circuit
location
storage medium
media defect
Prior art date
Application number
TW099122006A
Other languages
English (en)
Chinese (zh)
Inventor
George Mathew
shao-hua Yang
hai-tao Xia
Nenad Miladinovic
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 TW201137865A publication Critical patent/TW201137865A/zh

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
    • G11B20/18—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)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
TW099122006A 2010-02-24 2010-07-05 Systems and methods for data recovery TW201137865A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
TW201137865A true TW201137865A (en) 2011-11-01

Family

ID=42830660

Family Applications (1)

Application Number Title Priority Date Filing Date
TW099122006A TW201137865A (en) 2010-02-24 2010-07-05 Systems and methods for data recovery

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)

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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
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Also Published As

Publication number Publication date
KR20110097575A (ko) 2011-08-31
CN102163464A (zh) 2011-08-24
US20110205653A1 (en) 2011-08-25
JP2011175721A (ja) 2011-09-08
EP2360696A1 (en) 2011-08-24

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