CN1340821A - 数据恢复装置和方法 - Google Patents
数据恢复装置和方法 Download PDFInfo
- Publication number
- CN1340821A CN1340821A CN01124762A CN01124762A CN1340821A CN 1340821 A CN1340821 A CN 1340821A CN 01124762 A CN01124762 A CN 01124762A CN 01124762 A CN01124762 A CN 01124762A CN 1340821 A CN1340821 A CN 1340821A
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- China
- Prior art keywords
- circuit
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- 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.)
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Classifications
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- 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
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
-
- 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
-
- 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
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
-
- 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
- G11B20/10305—Improvement or modification of read or write signals signal quality assessment
- G11B20/10398—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors
- G11B20/10425—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors by counting out-of-lock events of a PLL
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
-
- 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
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
- G11B2020/1457—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof wherein DC control is performed by calculating a digital sum value [DSV]
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP236599/2000 | 2000-08-04 | ||
JP2000236599A JP3584967B2 (ja) | 2000-08-04 | 2000-08-04 | データの再生装置及び再生方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1340821A true CN1340821A (zh) | 2002-03-20 |
CN1160727C CN1160727C (zh) | 2004-08-04 |
Family
ID=18728615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB011247622A Expired - Fee Related CN1160727C (zh) | 2000-08-04 | 2001-08-03 | 数据恢复装置和方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6847601B2 (zh) |
JP (1) | JP3584967B2 (zh) |
KR (1) | KR100492838B1 (zh) |
CN (1) | CN1160727C (zh) |
SG (1) | SG102632A1 (zh) |
TW (1) | TW523737B (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070224140A1 (en) * | 2006-03-21 | 2007-09-27 | L'oreal | Cosmetic or dermatologic compositions containing microspheres |
US7609094B2 (en) * | 2006-06-23 | 2009-10-27 | Mediatek Inc. | Input circuits and methods thereof |
US8782487B2 (en) * | 2012-04-18 | 2014-07-15 | Lsi Corporation | Systems and methods for locating and correcting decoder mis-corrections |
US8782488B2 (en) * | 2012-04-20 | 2014-07-15 | Lsi Corporation | Systems and methods for back step data decoding |
US9094046B2 (en) | 2013-09-03 | 2015-07-28 | Lsi Corporation | Systems and methods for variable sector count spreading and de-spreading |
US8976471B1 (en) | 2013-09-05 | 2015-03-10 | Lsi Corporation | Systems and methods for two stage tone reduction |
US9436550B2 (en) | 2013-10-31 | 2016-09-06 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Systems and methods for internal disk drive data compression |
CN104834476B (zh) | 2014-02-10 | 2016-10-19 | 安华高科技通用Ip(新加坡)公司 | 基于段结束标记的数据对准的系统和方法 |
US9184954B1 (en) | 2014-07-02 | 2015-11-10 | Seagate Technology Llc | Systems and methods for directed soft data perturbation in layered decoding |
US9384761B1 (en) | 2015-04-09 | 2016-07-05 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Systems and methods for flexible variable code rate support |
CN112259121A (zh) * | 2020-10-26 | 2021-01-22 | 西安讯飞超脑信息科技有限公司 | 削波语音信号处理方法、系统、电子设备及存储介质 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0687286B2 (ja) | 1986-08-12 | 1994-11-02 | 株式会社東芝 | デジタルデ−タ生成装置 |
JPH02137128A (ja) | 1988-11-18 | 1990-05-25 | Asahi Chem Ind Co Ltd | 再生信号処理装置 |
US5321703A (en) * | 1992-03-13 | 1994-06-14 | Digital Equipment Corporation | Data recovery after error correction failure |
JP2899477B2 (ja) | 1992-05-29 | 1999-06-02 | 富士通株式会社 | 光ディスク装置 |
JPH05343988A (ja) | 1992-06-09 | 1993-12-24 | Sony Corp | 位相比較回路 |
JPH07169059A (ja) | 1993-12-15 | 1995-07-04 | Sony Corp | 光ディスク再生装置 |
US5490149A (en) * | 1993-12-28 | 1996-02-06 | International Business Machines Corporation | Tactical read error recovery strategy based on dynamic feedback |
JPH07264057A (ja) * | 1994-03-18 | 1995-10-13 | Hitachi Ltd | 位相同期回路および記録再生装置 |
US6002538A (en) * | 1994-03-18 | 1999-12-14 | Fujitsu, Ltd. | PRML regenerating apparatus having adjusted slice levels |
US5559840A (en) * | 1994-09-27 | 1996-09-24 | Inernational Business Machines Corporation | Digital timing recovery method and apparatus for a coded data channel |
JP3809965B2 (ja) | 1995-02-21 | 2006-08-16 | 松下電器産業株式会社 | データ検出装置 |
WO1997043835A1 (en) * | 1996-05-15 | 1997-11-20 | Seagate Technology, Inc. | Read error recovery utilizing ecc and read channel quality indicators |
JPH118656A (ja) | 1997-06-19 | 1999-01-12 | Hitachi Ltd | スライスレベル評価方法、2値化方法、それを用いた回路及びそれを用いた装置 |
JPH1173733A (ja) | 1997-08-28 | 1999-03-16 | Nec Corp | 情報記録再生装置 |
US6028727A (en) * | 1997-09-05 | 2000-02-22 | Cirrus Logic, Inc. | Method and system to improve single synthesizer setting times for small frequency steps in read channel circuits |
JP3788684B2 (ja) | 1998-03-06 | 2006-06-21 | パイオニア株式会社 | 波形等化器及びこれを用いたデータ再生装置 |
WO1999049467A1 (en) * | 1998-03-26 | 1999-09-30 | Qlogic Corporation | Controller for a disk drive and method for writing onto and reading from a disk |
JP3017167B2 (ja) * | 1998-05-20 | 2000-03-06 | 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 | デ一タ記憶媒体からのリ一ド信号の2値化方法および装置 |
JP2000113606A (ja) * | 1998-10-05 | 2000-04-21 | Internatl Business Mach Corp <Ibm> | データ記憶媒体からのリード・データ・エラーの訂正方法および装置 |
KR100354175B1 (ko) * | 1998-11-20 | 2002-09-28 | 엘지전자 주식회사 | 데이터 변/복조방법과 이를 이용한 변/복조 장치 및 그 기록매체 |
US6754025B1 (en) * | 2000-01-12 | 2004-06-22 | Maxtor Corporation | Disk drive spindle motor speed and timing control |
-
2000
- 2000-08-04 JP JP2000236599A patent/JP3584967B2/ja not_active Expired - Lifetime
-
2001
- 2001-07-31 TW TW090118645A patent/TW523737B/zh not_active IP Right Cessation
- 2001-07-31 KR KR10-2001-0046296A patent/KR100492838B1/ko active IP Right Grant
- 2001-07-31 SG SG200104624A patent/SG102632A1/en unknown
- 2001-08-03 US US09/921,837 patent/US6847601B2/en not_active Expired - Fee Related
- 2001-08-03 CN CNB011247622A patent/CN1160727C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20020021645A1 (en) | 2002-02-21 |
US6847601B2 (en) | 2005-01-25 |
KR100492838B1 (ko) | 2005-06-07 |
CN1160727C (zh) | 2004-08-04 |
KR20020011882A (ko) | 2002-02-09 |
JP3584967B2 (ja) | 2004-11-04 |
TW523737B (en) | 2003-03-11 |
SG102632A1 (en) | 2004-03-26 |
JP2002057584A (ja) | 2002-02-22 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: MEDIATEK INC. Free format text: FORMER OWNER: INTERNATIONAL BUSINESS MACHINE CORP. Effective date: 20060224 |
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Effective date of registration: 20060224 Address after: Hsinchu Science Industrial Park, Taiwan Patentee after: MediaTek.Inc Address before: American New York Patentee before: International Business Machines Corp. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040804 Termination date: 20160803 |
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CF01 | Termination of patent right due to non-payment of annual fee |