CN1251226C - 信息录放装置及信号处理方法 - Google Patents
信息录放装置及信号处理方法 Download PDFInfo
- Publication number
- CN1251226C CN1251226C CNB021420122A CN02142012A CN1251226C CN 1251226 C CN1251226 C CN 1251226C CN B021420122 A CNB021420122 A CN B021420122A CN 02142012 A CN02142012 A CN 02142012A CN 1251226 C CN1251226 C CN 1251226C
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- CN
- China
- Prior art keywords
- signal
- frequency
- modulation
- information
- phase
- 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.)
- Expired - Fee Related
Links
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Images
Classifications
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Digital Magnetic Recording (AREA)
Abstract
Description
Claims (18)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001312119 | 2001-10-10 | ||
JP2001-312119 | 2001-10-10 | ||
JP2001312119A JP2003123391A (ja) | 2001-10-10 | 2001-10-10 | 情報記録再生装置用信号処理装置及び信号処理方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1410994A CN1410994A (zh) | 2003-04-16 |
CN1251226C true CN1251226C (zh) | 2006-04-12 |
Family
ID=19130830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB021420122A Expired - Fee Related CN1251226C (zh) | 2001-10-10 | 2002-08-20 | 信息录放装置及信号处理方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6731441B2 (zh) |
EP (1) | EP1304694A3 (zh) |
JP (1) | JP2003123391A (zh) |
KR (1) | KR100462131B1 (zh) |
CN (1) | CN1251226C (zh) |
TW (1) | TW594687B (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040096009A1 (en) * | 2002-11-14 | 2004-05-20 | Unb Technologies, Inc. | Communications methods including narrow band modulation |
US20040096010A1 (en) * | 2002-11-14 | 2004-05-20 | Unb Technologies Inc. | Communications system including a narrow band modulator |
JP4142079B2 (ja) | 2004-09-30 | 2008-08-27 | シャープ株式会社 | 記録再生装置 |
US20080049571A1 (en) | 2006-08-25 | 2008-02-28 | Mediatek, Inc. | Method and apparatus for compensating periodic signal |
US20110090779A1 (en) * | 2009-10-16 | 2011-04-21 | Mediatek Inc. | Apparatus for generating viterbi-processed data |
JP6629160B2 (ja) * | 2016-09-26 | 2020-01-15 | 株式会社東芝 | 磁気記録再生装置および磁気記録再生装置の制御方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3689746T2 (de) * | 1985-06-21 | 1994-09-22 | Hitachi Ltd | Aufnahme- und Wiedergabevorrichtung unter Verwendung eines Modulators/Demodulators mit verschobener quaternärer Phasendifferenzumtastung. |
JPH0191304A (ja) * | 1987-10-01 | 1989-04-11 | Matsushita Electric Ind Co Ltd | 磁気記録再生装置 |
JPH0743804B2 (ja) * | 1988-03-23 | 1995-05-15 | 日本ビクター株式会社 | 磁気記録装置及び磁気記録再生装置 |
JPH01303603A (ja) * | 1988-05-31 | 1989-12-07 | Victor Co Of Japan Ltd | 磁気記録再生装置 |
NL8803082A (nl) * | 1988-12-16 | 1990-07-16 | Philips Nv | Inrichting voor het opnemen van een audio- en een videosignaal. |
US5663844A (en) * | 1990-11-19 | 1997-09-02 | Canon Kabushiki Kaisha | Signal reproducing apparatus having waveform equalizing function |
KR0165277B1 (ko) * | 1993-02-27 | 1999-03-20 | 김광호 | 디지탈신호 자기 기록 재생장치 |
JP3085819B2 (ja) * | 1993-05-20 | 2000-09-11 | 株式会社日立製作所 | 記録システムおよび再生システム |
JPH08256185A (ja) * | 1995-03-16 | 1996-10-01 | Hitachi Denshi Ltd | 変調器 |
FR2745139A1 (fr) * | 1996-02-21 | 1997-08-22 | Philips Electronics Nv | Systeme de transmissions numeriques a modulation a phase continue |
JPH1055610A (ja) * | 1996-08-09 | 1998-02-24 | Toshiba Corp | ディスクデータ再生装置 |
JP3998427B2 (ja) * | 2001-03-15 | 2007-10-24 | 株式会社東芝 | 回転制御回路及びこれを用いた記録可能な光ディスクドライブ装置並びに回転制御方法 |
-
2001
- 2001-10-10 JP JP2001312119A patent/JP2003123391A/ja active Pending
-
2002
- 2002-07-31 TW TW091117195A patent/TW594687B/zh not_active IP Right Cessation
- 2002-08-09 US US10/214,599 patent/US6731441B2/en not_active Expired - Fee Related
- 2002-08-19 KR KR10-2002-0048809A patent/KR100462131B1/ko not_active IP Right Cessation
- 2002-08-19 EP EP02018181A patent/EP1304694A3/en not_active Withdrawn
- 2002-08-20 CN CNB021420122A patent/CN1251226C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1304694A3 (en) | 2007-06-20 |
US20030067696A1 (en) | 2003-04-10 |
JP2003123391A (ja) | 2003-04-25 |
US6731441B2 (en) | 2004-05-04 |
KR20030030847A (ko) | 2003-04-18 |
CN1410994A (zh) | 2003-04-16 |
KR100462131B1 (ko) | 2004-12-17 |
TW594687B (en) | 2004-06-21 |
EP1304694A2 (en) | 2003-04-23 |
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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: HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN LTD.; L Free format text: FORMER OWNER: HITACHI CO., LTD.; LEGAL PERSON TOYOTA SCHOOL Effective date: 20060331 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20060331 Address after: Kanagawa Co-patentee after: Toyota School Foundation Patentee after: Hitachi Global Scinece Technology Jappan Co., Ltd. Address before: Tokyo, Japan Co-patentee before: Toyota School Foundation Patentee before: Hitachi Ltd. |
|
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |