CN103455282A - 用于把数据写到磁带的方法及带驱动器系统 - Google Patents
用于把数据写到磁带的方法及带驱动器系统 Download PDFInfo
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- CN103455282A CN103455282A CN2013102039139A CN201310203913A CN103455282A CN 103455282 A CN103455282 A CN 103455282A CN 2013102039139 A CN2013102039139 A CN 2013102039139A CN 201310203913 A CN201310203913 A CN 201310203913A CN 103455282 A CN103455282 A CN 103455282A
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- 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
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
-
- 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
-
- 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
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
-
- 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
- H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2906—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes
-
- 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
- G11B2020/1836—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information using a Reed Solomon [RS] code
-
- 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
-
- 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
- G11B2020/1853—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information using a product code which has inner and outer parity symbols
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
-
- 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
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
-
- 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
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/13—Linear codes
- H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
- H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
- H03M13/1515—Reed-Solomon codes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
- H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
- H03M5/145—Conversion to or from block codes or representations thereof
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- 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)
- Error Detection And Correction (AREA)
Abstract
Description
字节位置 | 字节中的长度 | 字段的名称 |
0 | 4 | CW-4标识符 |
4 | 4 | 写通 |
8 | 2 | 头奇偶 |
Claims (18)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/483,004 US9190076B2 (en) | 2012-05-29 | 2012-05-29 | Data format using an efficient reverse concatenated modulation code for magnetic tape recording |
US13/483,004 | 2012-05-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103455282A true CN103455282A (zh) | 2013-12-18 |
CN103455282B CN103455282B (zh) | 2016-04-13 |
Family
ID=49671831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310203913.9A Active CN103455282B (zh) | 2012-05-29 | 2013-05-29 | 用于把数据写到磁带的方法及带驱动器系统 |
Country Status (2)
Country | Link |
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US (2) | US9190076B2 (zh) |
CN (1) | CN103455282B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106020716A (zh) * | 2015-03-31 | 2016-10-12 | 国际商业机器公司 | 利用可变长度报头写入数据的系统和方法 |
WO2024045879A1 (zh) * | 2022-08-30 | 2024-03-07 | 华为云计算技术有限公司 | 一种数据访问方法和系统 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2526943B (en) | 2011-12-20 | 2016-04-27 | Imagination Tech Ltd | Method and apparatus for compressing and decompressing data |
US8854759B2 (en) | 2012-04-24 | 2014-10-07 | International Business Machines Corporation | Combined soft detection/soft decoding in tape drive storage channels |
US9178534B2 (en) | 2012-05-29 | 2015-11-03 | International Business Machines Corporation | Methods for partial reverse concatenation for data storage devices using composite codes |
US9558782B2 (en) | 2012-05-29 | 2017-01-31 | International Business Machines Corporation | Partial reverse concatenation for data storage devices using composite codes |
US9190076B2 (en) | 2012-05-29 | 2015-11-17 | International Business Machines Corporation | Data format using an efficient reverse concatenated modulation code for magnetic tape recording |
US9373357B1 (en) | 2015-03-31 | 2016-06-21 | International Business Machines Corporation | Error protection of data stored using variable-length headers |
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US6539514B1 (en) * | 1998-05-12 | 2003-03-25 | Hewlett-Packard Company | Read while write method in data storage device |
US20070168834A1 (en) * | 2002-07-03 | 2007-07-19 | Mustafa Eroz | Method and system for routing in low density parity check (LDPC) decoders |
WO2008116725A1 (en) * | 2007-03-23 | 2008-10-02 | International Business Machines Corporation | Reverse concatenation for product codes |
US20110258509A1 (en) * | 2006-03-31 | 2011-10-20 | Aditya Ramamoorthy | Multi-Level Signal Memory with LDPC and Interleaving |
CN102272841A (zh) * | 2009-01-09 | 2011-12-07 | 国际商业机器公司 | 磁带上多磁道记录的重写高效ecc/交错 |
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US4888775A (en) | 1988-03-18 | 1989-12-19 | International Business Machines Corporation | Trellis codes for partial response channels |
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US6112324A (en) | 1996-02-02 | 2000-08-29 | The Arizona Board Of Regents Acting On Behalf Of The University Of Arizona | Direct access compact disc, writing and reading method and device for same |
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US7000167B2 (en) | 2001-08-01 | 2006-02-14 | International Business Machines Corporation | Decoding low density parity check codes |
ATE321301T1 (de) | 2001-10-24 | 2006-04-15 | Koninkl Philips Electronics Nv | Sicherheitseinrichtung für eine massenspeicherung |
US6757122B1 (en) | 2002-01-29 | 2004-06-29 | Seagate Technology Llc | Method and decoding apparatus using linear code with parity check matrices composed from circulants |
US7246294B2 (en) | 2002-04-01 | 2007-07-17 | Intel Corporation | Method for iterative hard-decision forward error correction decoding |
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2012
- 2012-05-29 US US13/483,004 patent/US9190076B2/en not_active Expired - Fee Related
-
2013
- 2013-02-04 US US13/758,752 patent/US9183852B2/en not_active Expired - Fee Related
- 2013-05-29 CN CN201310203913.9A patent/CN103455282B/zh active Active
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US6539514B1 (en) * | 1998-05-12 | 2003-03-25 | Hewlett-Packard Company | Read while write method in data storage device |
US20070168834A1 (en) * | 2002-07-03 | 2007-07-19 | Mustafa Eroz | Method and system for routing in low density parity check (LDPC) decoders |
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CN102272841A (zh) * | 2009-01-09 | 2011-12-07 | 国际商业机器公司 | 磁带上多磁道记录的重写高效ecc/交错 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106020716A (zh) * | 2015-03-31 | 2016-10-12 | 国际商业机器公司 | 利用可变长度报头写入数据的系统和方法 |
CN106020716B (zh) * | 2015-03-31 | 2019-01-22 | 国际商业机器公司 | 利用可变长度报头写入数据的系统和方法 |
WO2024045879A1 (zh) * | 2022-08-30 | 2024-03-07 | 华为云计算技术有限公司 | 一种数据访问方法和系统 |
Also Published As
Publication number | Publication date |
---|---|
CN103455282B (zh) | 2016-04-13 |
US9183852B2 (en) | 2015-11-10 |
US9190076B2 (en) | 2015-11-17 |
US20130326311A1 (en) | 2013-12-05 |
US20130326305A1 (en) | 2013-12-05 |
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