CN1299265C - 摆动信号重放电路 - Google Patents
摆动信号重放电路 Download PDFInfo
- Publication number
- CN1299265C CN1299265C CNB2004100040912A CN200410004091A CN1299265C CN 1299265 C CN1299265 C CN 1299265C CN B2004100040912 A CNB2004100040912 A CN B2004100040912A CN 200410004091 A CN200410004091 A CN 200410004091A CN 1299265 C CN1299265 C CN 1299265C
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- agc
- wobble
- gain control
- 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
- 238000001514 detection method Methods 0.000 claims description 41
- 238000013341 scale-up Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 15
- 230000003287 optical effect Effects 0.000 description 11
- 230000007547 defect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
- G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam 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 only
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0948—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
Landscapes
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims (3)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP79288/2000 | 2000-03-16 | ||
JP2000079288A JP4422855B2 (ja) | 2000-03-16 | 2000-03-16 | ウォブル信号再生回路 |
JP79288/00 | 2000-03-16 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB01111729XA Division CN1193352C (zh) | 2000-03-16 | 2001-03-16 | 摆动信号重放电路 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1560836A CN1560836A (zh) | 2005-01-05 |
CN1299265C true CN1299265C (zh) | 2007-02-07 |
Family
ID=18596557
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004100040912A Expired - Fee Related CN1299265C (zh) | 2000-03-16 | 2001-03-16 | 摆动信号重放电路 |
CNB01111729XA Expired - Fee Related CN1193352C (zh) | 2000-03-16 | 2001-03-16 | 摆动信号重放电路 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB01111729XA Expired - Fee Related CN1193352C (zh) | 2000-03-16 | 2001-03-16 | 摆动信号重放电路 |
Country Status (5)
Country | Link |
---|---|
US (3) | US6785207B2 (zh) |
JP (1) | JP4422855B2 (zh) |
KR (1) | KR100424232B1 (zh) |
CN (2) | CN1299265C (zh) |
TW (1) | TW509927B (zh) |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4561022B2 (ja) * | 2000-10-05 | 2010-10-13 | 日本ビクター株式会社 | 記録及び/又は再生装置並びに方法 |
KR100382733B1 (ko) * | 2001-02-08 | 2003-05-09 | 삼성전자주식회사 | 광디스크 재생 시스템에 이용되는 피킹 방지 자동 이득조절기 및 피킹 방지방법 |
JP3690289B2 (ja) * | 2001-02-19 | 2005-08-31 | ティアック株式会社 | 光ディスク装置 |
JP2002279640A (ja) | 2001-03-21 | 2002-09-27 | Ricoh Co Ltd | ウォブル検出回路とその装置 |
DE10140326A1 (de) * | 2001-08-16 | 2003-02-27 | Thomson Brandt Gmbh | Verfahren zur Verminderung des Rauschens in einem Wobbelsignal |
JP3566690B2 (ja) | 2001-12-07 | 2004-09-15 | 株式会社リコー | ウォブル信号検出回路及び光ディスク装置 |
JP2003217127A (ja) * | 2002-01-16 | 2003-07-31 | Sony Corp | 光ピックアップ装置及び光ディスク装置 |
JP4079658B2 (ja) * | 2002-03-05 | 2008-04-23 | 株式会社リコー | 2値化ウォブル信号を生成する回路、ライトクロック生成回路、2値化ウォブル信号を生成する方法、ライトクロック生成方法及び光ディスク装置 |
US7474603B2 (en) * | 2002-09-04 | 2009-01-06 | Ricoh Company, Ltd. | Optical information recording method, apparatus, and medium, laser control circuit, wobble signal detection method, and servo signal detection method |
JP2004134002A (ja) * | 2002-10-10 | 2004-04-30 | Sony Corp | ディスクドライブ装置、プリピット検出方法 |
TWI332208B (en) * | 2003-01-28 | 2010-10-21 | Tian Holdings Llc | Method and apparatus for generating wobble signal |
JP2004246948A (ja) * | 2003-02-12 | 2004-09-02 | Sanyo Electric Co Ltd | データ記録制御装置 |
TWI261225B (en) * | 2003-04-10 | 2006-09-01 | Via Optical Solution Inc | Method and related apparatus for evaluating beta-parameter according to results of read data sliced with different slicing levels while performing optimal power control of optical disk drive |
KR20050019622A (ko) * | 2003-08-20 | 2005-03-03 | 삼성전자주식회사 | 랜드 프리 피트 데이터 검출 장치 및 방법 |
WO2005024800A1 (ja) | 2003-09-02 | 2005-03-17 | Ricoh Company Ltd. | プッシュプル信号生成装置及び光ディスク装置 |
US20050201230A1 (en) * | 2003-09-19 | 2005-09-15 | Shinichi Kurobe | Wobble signal demodulating method, wobble signal demodulating circuit and optical disk apparatus |
US7317667B2 (en) | 2003-10-31 | 2008-01-08 | Matsushita Electric Industrial Co., Ltd. | Wobble signal extraction circuit and optical disk device |
JP2005166151A (ja) * | 2003-12-01 | 2005-06-23 | Sanyo Electric Co Ltd | コンパクトディスク再生装置用rf回路 |
JP2005196846A (ja) * | 2004-01-06 | 2005-07-21 | Matsushita Electric Ind Co Ltd | ウォブル信号抽出回路および光ディスク装置 |
KR100530237B1 (ko) * | 2004-01-19 | 2005-11-22 | 삼성전자주식회사 | 워블 신호 재생 장치 |
JP3853806B2 (ja) * | 2004-06-24 | 2006-12-06 | シャープ株式会社 | 光ディスク装置 |
JP4237111B2 (ja) * | 2004-07-07 | 2009-03-11 | 株式会社リコー | クロック信号生成回路、及びそれを用いた光ディスク装置 |
JP4244907B2 (ja) * | 2004-10-25 | 2009-03-25 | ソニー株式会社 | 光ディスク装置 |
JP2006228286A (ja) * | 2005-02-15 | 2006-08-31 | Toshiba Corp | 光ディスク記録再生装置 |
US7525604B2 (en) * | 2005-03-15 | 2009-04-28 | Naxellent, Llc | Windows with electrically controllable transmission and reflection |
CN100389460C (zh) * | 2005-06-01 | 2008-05-21 | 上海乐金广电电子有限公司 | 光记录媒介的抖动地址纠错装置 |
US7729214B1 (en) | 2005-08-09 | 2010-06-01 | Mediatek Inc. | Method and apparatus applied in optical disc drive for obtaining push-pull signal via adjusting amplifying gain according to fluctuating signals generated from photo detector of pick-up head |
US20070064566A1 (en) * | 2005-09-21 | 2007-03-22 | Wei-Hsin Hsu | Signal process device and method for obtaining wobble signal |
US7613093B2 (en) * | 2005-09-28 | 2009-11-03 | Mediatek Inc. | Duty ratio control apparatus for pre-pit detection or header detection of an optical storage medium |
US7596193B2 (en) * | 2005-11-09 | 2009-09-29 | Via Telecom, Inc. | Variable bandwidth automatic gain control |
TWI338295B (en) * | 2006-06-05 | 2011-03-01 | Mediatek Inc | Wobble detection circuit amd method for processing a wobble signal |
JP2007328831A (ja) | 2006-06-06 | 2007-12-20 | Hitachi-Lg Data Storage Inc | 情報再生装置及び情報再生方法 |
EP2040258B1 (en) | 2006-07-10 | 2010-09-15 | Panasonic Corporation | Optical disc device |
US7768693B2 (en) * | 2007-01-24 | 2010-08-03 | Ravenbrick Llc | Thermally switched optical downconverting filter |
US7973998B2 (en) * | 2007-05-18 | 2011-07-05 | Serious Materials, Inc. | Temperature activated optical films |
WO2009009770A1 (en) | 2007-07-11 | 2009-01-15 | Ravenbrick, Llc | Thermally switched reflective optical shutter |
WO2009039423A1 (en) | 2007-09-19 | 2009-03-26 | Ravenbrick, Llc | Low-emissivity window films and coatings incoporating nanoscale wire grids |
JP4525746B2 (ja) * | 2007-12-13 | 2010-08-18 | ソニー株式会社 | ウォブル信号抽出回路及び光ディスク装置 |
US8169685B2 (en) | 2007-12-20 | 2012-05-01 | Ravenbrick, Llc | Thermally switched absorptive window shutter |
WO2009099161A1 (ja) * | 2008-02-06 | 2009-08-13 | Nec Corporation | ウォブル有無判定装置、媒体判別装置、ウォブル有無判定方法および媒体判別方法 |
US8270266B2 (en) * | 2008-04-17 | 2012-09-18 | Mediatek Inc. | Methods and devices for detecting wobbles on an optical disc |
AU2009282812B2 (en) | 2008-08-20 | 2013-02-21 | Ravenbrick, Llc | Methods for fabricating thermochromic filters |
JP4674643B2 (ja) * | 2009-02-17 | 2011-04-20 | ソニー株式会社 | 光ディスク再生装置および光ディスク記録再生装置 |
US8643795B2 (en) | 2009-04-10 | 2014-02-04 | Ravenbrick Llc | Thermally switched optical filter incorporating a refractive optical structure |
US8284336B2 (en) | 2009-04-10 | 2012-10-09 | Ravenbrick Llc | Thermally switched optical filter incorporating a guest-host architecture |
WO2011053853A2 (en) * | 2009-10-30 | 2011-05-05 | Ravenbrick Llc | Thermochromic filters and stopband filters for use with same |
US8014246B2 (en) * | 2009-12-16 | 2011-09-06 | Oracle America, Inc. | Data storage system and method for calibrating same |
KR101476899B1 (ko) | 2010-03-29 | 2014-12-26 | 라벤브릭 엘엘씨 | 폴리머-안정화 열방성 액정 장치 |
CN103080443B (zh) | 2010-06-01 | 2015-11-25 | 雷文布里克有限责任公司 | 多功能建筑构件 |
CA2847185A1 (en) | 2011-09-01 | 2013-03-07 | Ravenbrick, Llc | Thermotropic optical shutter incorporating coatable polarizers |
US8958167B1 (en) * | 2013-12-23 | 2015-02-17 | Western Digital Technologies, Inc. | Detection of disk surface irregularities in data storage devices |
CN110962046B (zh) * | 2019-11-25 | 2021-05-25 | 佛山缔乐视觉科技有限公司 | 五金件的缺陷识别方法、系统及存储介质 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5138601A (en) * | 1989-12-04 | 1992-08-11 | Sony Corporation | Digital information signal reproducing apparatus |
JPH1125486A (ja) * | 1997-07-02 | 1999-01-29 | Lg Electron Inc | 光ディスク・ドライブ装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2516577B2 (ja) * | 1990-01-12 | 1996-07-24 | 松下電器産業株式会社 | 光デェスク信号再生装置 |
JP3461017B2 (ja) * | 1993-10-29 | 2003-10-27 | 株式会社ケンウッド | 光ディスク装置のスピンドル制御回路 |
JPH07320270A (ja) * | 1994-05-23 | 1995-12-08 | Olympus Optical Co Ltd | 光学式情報記録再生装置 |
JPH08185664A (ja) * | 1994-12-28 | 1996-07-16 | Kenwood Corp | 光ディスク装置のワブル検出回路 |
JP3458502B2 (ja) | 1995-01-11 | 2003-10-20 | ソニー株式会社 | 光ディスク装置 |
JP3889457B2 (ja) * | 1996-03-13 | 2007-03-07 | パイオニア株式会社 | 回転制御装置及び回転制御方法 |
JP3787015B2 (ja) * | 1997-04-14 | 2006-06-21 | 三菱電機株式会社 | ディスク回転制御装置 |
JP2999982B2 (ja) * | 1997-06-05 | 2000-01-17 | 三洋電機株式会社 | ディスク再生装置、及び再生回路 |
JP3330059B2 (ja) * | 1997-06-20 | 2002-09-30 | 株式会社日立製作所 | 情報記録再生方法及びそれを用いた情報記録再生装置 |
JP3699813B2 (ja) | 1997-09-25 | 2005-09-28 | 株式会社リコー | 光ディスク装置 |
JP3834418B2 (ja) | 1997-11-17 | 2006-10-18 | 株式会社日立製作所 | 光ディスク装置、ウォブル信号抽出方法 |
JP3732650B2 (ja) | 1998-03-26 | 2006-01-05 | パイオニア株式会社 | プリピット検出装置 |
JP4102483B2 (ja) * | 1998-06-02 | 2008-06-18 | パイオニア株式会社 | 情報記録装置 |
JP2000076684A (ja) * | 1998-09-01 | 2000-03-14 | Pioneer Electronic Corp | 情報記録装置 |
JP3872235B2 (ja) * | 1998-10-21 | 2007-01-24 | パイオニア株式会社 | プリピット検出装置 |
-
2000
- 2000-03-16 JP JP2000079288A patent/JP4422855B2/ja not_active Expired - Lifetime
-
2001
- 2001-02-28 US US09/794,393 patent/US6785207B2/en not_active Expired - Lifetime
- 2001-03-15 KR KR10-2001-0013338A patent/KR100424232B1/ko not_active IP Right Cessation
- 2001-03-15 TW TW090106109A patent/TW509927B/zh not_active IP Right Cessation
- 2001-03-16 CN CNB2004100040912A patent/CN1299265C/zh not_active Expired - Fee Related
- 2001-03-16 CN CNB01111729XA patent/CN1193352C/zh not_active Expired - Fee Related
-
2004
- 2004-05-03 US US10/836,213 patent/US7133335B2/en not_active Expired - Fee Related
-
2006
- 2006-10-12 US US11/546,289 patent/US7295499B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5138601A (en) * | 1989-12-04 | 1992-08-11 | Sony Corporation | Digital information signal reproducing apparatus |
JPH1125486A (ja) * | 1997-07-02 | 1999-01-29 | Lg Electron Inc | 光ディスク・ドライブ装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1316729A (zh) | 2001-10-10 |
JP4422855B2 (ja) | 2010-02-24 |
US20070030769A1 (en) | 2007-02-08 |
CN1560836A (zh) | 2005-01-05 |
US20040202092A1 (en) | 2004-10-14 |
US7295499B2 (en) | 2007-11-13 |
US7133335B2 (en) | 2006-11-07 |
US6785207B2 (en) | 2004-08-31 |
US20010026512A1 (en) | 2001-10-04 |
TW509927B (en) | 2002-11-11 |
KR100424232B1 (ko) | 2004-03-24 |
JP2001266486A (ja) | 2001-09-28 |
CN1193352C (zh) | 2005-03-16 |
KR20010092354A (ko) | 2001-10-24 |
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