KR970010941B1 - 레이저어레이를 갖춘 광픽업장치 - Google Patents
레이저어레이를 갖춘 광픽업장치 Download PDFInfo
- Publication number
- KR970010941B1 KR970010941B1 KR1019940009415A KR19940009415A KR970010941B1 KR 970010941 B1 KR970010941 B1 KR 970010941B1 KR 1019940009415 A KR1019940009415 A KR 1019940009415A KR 19940009415 A KR19940009415 A KR 19940009415A KR 970010941 B1 KR970010941 B1 KR 970010941B1
- Authority
- KR
- South Korea
- Prior art keywords
- laser
- recording medium
- information recording
- light
- reflected
- 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
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
-
- 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
- G11B7/0903—Multi-beam tracking systems
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (2)
- 정보기록매체(D)의 표면에 조사되는 레이저비임의 트랙킹방향의 변위를 위해 1차원 어레이형태로 배열되어 선택적으로 동작하는 복수의 레이저발광소자(30a,…,30n)으로 이루어진 레이저광원(30)과 ; 상기 레이저광원(30)의 선택적으로 작동하는 레이저발광소자에서 방사되는 레이저비임이 상기 정보기록매체(D)의 표면에 조사되고 그 정보기록매체(D)의 표면으로부터 반사되는 반사광의 분광 및 그 분광된 반사광의 경로를 형성하는 광학계(32,34,36,38,42,44,46) ; 상기 정보기록매체(D)로부터 상기 광학계를 통해 제공되는 분광된 반사광의 일부를 수광하여 포커싱에러를 검출하는 수광소자(44) ; 및, 상기 반사광의 다른 부분을 수광하여 트랙킹에러를 검출하여 상기 복수의 레이저발광소자(30a,…,30n)에 대한 스위칭선택신호를 출력하는 수광소자(46)를 포함하여 구성된 것을 특징으로 하는 레이저어레이를 갖춘 광픽업장치.
- 제 1 항에 있어서, 상기 각 수광소자(44,46)는 상기 레이저광원(30)으로부터 변위적으로 발생되어 상기정보기록매체(D)로부터 반사되는 반사광을 수광하기 위해 장방형상으로 형성된 것을 특징으로 하는 레이저어레이를 갖춘 광픽업장치.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940009415A KR970010941B1 (ko) | 1994-04-30 | 1994-04-30 | 레이저어레이를 갖춘 광픽업장치 |
| JP7081251A JPH07302429A (ja) | 1994-04-30 | 1995-04-06 | トラッキング制御装置及びそれを含む光ピックアップ装置 |
| CN95104240A CN1079971C (zh) | 1994-04-30 | 1995-04-26 | 跟踪控制装置和具有相同装置的光检拾器 |
| US08/429,632 US5559771A (en) | 1994-04-30 | 1995-04-27 | Tracking control apparatus and optical pickup having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940009415A KR970010941B1 (ko) | 1994-04-30 | 1994-04-30 | 레이저어레이를 갖춘 광픽업장치 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950030067A KR950030067A (ko) | 1995-11-24 |
| KR970010941B1 true KR970010941B1 (ko) | 1997-07-02 |
Family
ID=19382185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940009415A Expired - Fee Related KR970010941B1 (ko) | 1994-04-30 | 1994-04-30 | 레이저어레이를 갖춘 광픽업장치 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5559771A (ko) |
| JP (1) | JPH07302429A (ko) |
| KR (1) | KR970010941B1 (ko) |
| CN (1) | CN1079971C (ko) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9200397B2 (en) | 1998-08-17 | 2015-12-01 | Cimpress Schweiz Gmbh | Automatically generating embroidery designs |
| US6836695B1 (en) * | 1998-08-17 | 2004-12-28 | Soft Sight Inc. | Automatically generating embroidery designs from a scanned image |
| JP2000234999A (ja) * | 1999-02-16 | 2000-08-29 | Sony Disc Technology:Kk | 光ディスクの検査測定装置 |
| JP3815340B2 (ja) * | 2002-02-04 | 2006-08-30 | 日本電気株式会社 | 光ディスク装置および光ディスク装置のチルト補償方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0614409B2 (ja) * | 1985-03-23 | 1994-02-23 | オリンパス光学工業株式会社 | 光学的情報記録再生装置 |
| JP2931042B2 (ja) * | 1990-05-28 | 1999-08-09 | パイオニア株式会社 | 光ディスク再生装置 |
| JPH04265530A (ja) * | 1991-02-19 | 1992-09-21 | Oki Electric Ind Co Ltd | 光ディスク装置 |
| JPH05101431A (ja) * | 1991-10-07 | 1993-04-23 | Sony Corp | 光デイスク再生装置 |
-
1994
- 1994-04-30 KR KR1019940009415A patent/KR970010941B1/ko not_active Expired - Fee Related
-
1995
- 1995-04-06 JP JP7081251A patent/JPH07302429A/ja active Pending
- 1995-04-26 CN CN95104240A patent/CN1079971C/zh not_active Expired - Fee Related
- 1995-04-27 US US08/429,632 patent/US5559771A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5559771A (en) | 1996-09-24 |
| CN1125884A (zh) | 1996-07-03 |
| KR950030067A (ko) | 1995-11-24 |
| JPH07302429A (ja) | 1995-11-14 |
| CN1079971C (zh) | 2002-02-27 |
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