DE69939301D1 - Optisches wiedergabe-/aufzeichnungsgerät - Google Patents
Optisches wiedergabe-/aufzeichnungsgerätInfo
- Publication number
- DE69939301D1 DE69939301D1 DE69939301T DE69939301T DE69939301D1 DE 69939301 D1 DE69939301 D1 DE 69939301D1 DE 69939301 T DE69939301 T DE 69939301T DE 69939301 T DE69939301 T DE 69939301T DE 69939301 D1 DE69939301 D1 DE 69939301D1
- Authority
- DE
- Germany
- Prior art keywords
- recording device
- play
- optical
- optical play
- recording
- 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 - Lifetime
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
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
-
- 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
- G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters 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
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10305—Improvement or modification of read or write signals signal quality assessment
- G11B20/10351—Improvement or modification of read or write signals signal quality assessment baseline shift, DC content, bias
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1362—Mirrors
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Amplifiers (AREA)
- Optical Recording Or Reproduction (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98200748 | 1998-03-09 | ||
| PCT/IB1999/000289 WO1999046766A2 (en) | 1998-03-09 | 1999-02-18 | Optical read/write apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE69939301D1 true DE69939301D1 (de) | 2008-09-25 |
Family
ID=8233456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69939301T Expired - Lifetime DE69939301D1 (de) | 1998-03-09 | 1999-02-18 | Optisches wiedergabe-/aufzeichnungsgerät |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6219310B1 (de) |
| EP (1) | EP0981819B1 (de) |
| JP (1) | JP4212658B2 (de) |
| KR (1) | KR100601909B1 (de) |
| DE (1) | DE69939301D1 (de) |
| MY (1) | MY125914A (de) |
| TW (1) | TW412738B (de) |
| WO (1) | WO1999046766A2 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60246108A (ja) * | 1984-05-22 | 1985-12-05 | Nec Corp | 中間周波増幅器 |
| NL8500059A (nl) | 1985-01-11 | 1986-08-01 | Philips Nv | Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager. |
| JPH063648B2 (ja) | 1986-01-16 | 1994-01-12 | 松下電器産業株式会社 | 光学的情報再生装置 |
| NL8700655A (nl) | 1986-10-06 | 1988-05-02 | Philips Nv | Optisch uitleesbare registratiedrager voor het optekenen van informatie, een werkwijze en een inrichting voor het vervaardigen van een dergelijke registratiedrager, een inrichting voor het optekenen van informatie op een dergelijke registratiedrager, alsmede een inrichting voor het uitlezen van op een dergelijke registratiedrager opgetekende informatie. |
| JPS63142533A (ja) * | 1986-12-03 | 1988-06-14 | Fujitsu Ltd | 光学的記録再生装置 |
| JPH01279428A (ja) * | 1988-04-30 | 1989-11-09 | Toshiba Corp | 電流電圧変換回路 |
| US5099205A (en) * | 1990-11-29 | 1992-03-24 | Brooktree Corporation | Balanced cascode current mirror |
| EP0508522A3 (en) * | 1991-04-08 | 1993-03-03 | N.V. Philips' Gloeilampenfabrieken | Optical recording and/or reading apparatus |
| US5475210A (en) * | 1991-09-09 | 1995-12-12 | Kabushiki Kaisha Toshiba | Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device |
| GB9300155D0 (en) * | 1993-01-06 | 1993-03-03 | Philips Electronics Uk Ltd | Electrical circuit arrangement |
| JPH07153093A (ja) * | 1993-11-25 | 1995-06-16 | Sony Corp | 光再生信号処理回路 |
| DE4424527A1 (de) * | 1994-07-12 | 1996-01-18 | Philips Patentverwaltung | Schaltungsanordnung zur Kapazitätsverstärkung |
-
1998
- 1998-10-22 TW TW087117488A patent/TW412738B/zh active
-
1999
- 1999-02-18 EP EP99902750A patent/EP0981819B1/de not_active Expired - Lifetime
- 1999-02-18 DE DE69939301T patent/DE69939301D1/de not_active Expired - Lifetime
- 1999-02-18 JP JP54553199A patent/JP4212658B2/ja not_active Expired - Fee Related
- 1999-02-18 WO PCT/IB1999/000289 patent/WO1999046766A2/en active IP Right Grant
- 1999-02-18 KR KR1019997010290A patent/KR100601909B1/ko not_active IP Right Cessation
- 1999-03-08 MY MYPI99000845A patent/MY125914A/en unknown
- 1999-03-09 US US09/264,910 patent/US6219310B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6219310B1 (en) | 2001-04-17 |
| WO1999046766A3 (en) | 1999-11-04 |
| MY125914A (en) | 2006-08-30 |
| TW412738B (en) | 2000-11-21 |
| JP2001525102A (ja) | 2001-12-04 |
| KR20010012338A (ko) | 2001-02-15 |
| EP0981819B1 (de) | 2008-08-13 |
| WO1999046766A2 (en) | 1999-09-16 |
| JP4212658B2 (ja) | 2009-01-21 |
| EP0981819A2 (de) | 2000-03-01 |
| KR100601909B1 (ko) | 2006-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| R082 | Change of representative |
Ref document number: 981819 Country of ref document: EP Representative=s name: MUELLER-BORE & PARTNER PATENTANWAELTE, EUROPEA, DE |