KR920700446A - Optical scanning device circuit of optical record and / or reproduction set - Google Patents
Optical scanning device circuit of optical record and / or reproduction setInfo
- Publication number
- KR920700446A KR920700446A KR1019900702587A KR900702587A KR920700446A KR 920700446 A KR920700446 A KR 920700446A KR 1019900702587 A KR1019900702587 A KR 1019900702587A KR 900702587 A KR900702587 A KR 900702587A KR 920700446 A KR920700446 A KR 920700446A
- Authority
- KR
- South Korea
- Prior art keywords
- scanning device
- device circuit
- optical scanning
- optical
- light beam
- Prior art date
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
- G11B7/08—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
- G11B7/0945—Methods for initialising servos, start-up sequences
-
- 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
- G11B7/085—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
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 따른 제어 전압의 절환 기능을 갖는 광 기록 플레이어의 블럭 다이어드램이며,1 is a block diagram of an optical recording player having a switching function of a control voltage according to the present invention,
제2도는 제어 전압과 트랙 사이의 상호관계를 보여주며,2 shows the correlation between the control voltage and the track,
제3도는 본 발명에 따른 회로의 상세한 다이어그램이다.3 is a detailed diagram of a circuit according to the invention.
Claims (5)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1989/000360 WO1989009674A1 (en) | 1988-04-07 | 1989-04-03 | Device for producing amorphous ceramic products or metal alloys |
DE3911525A DE3911525A1 (en) | 1988-11-17 | 1989-04-08 | Circuit for detecting the type of an optical recording carrier |
DEP39115259 | 1989-04-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR920700446A true KR920700446A (en) | 1992-02-19 |
Family
ID=6378223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900702587A KR920700446A (en) | 1989-04-03 | 1990-03-03 | Optical scanning device circuit of optical record and / or reproduction set |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR920700446A (en) |
CN (1) | CN1046239A (en) |
AU (1) | AU5175590A (en) |
WO (1) | WO1990012394A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5255262A (en) * | 1991-06-04 | 1993-10-19 | International Business Machines Corporation | Multiple data surface optical data storage system with transmissive data surfaces |
US5452284A (en) * | 1992-09-14 | 1995-09-19 | Matsushita Electric Industrial Co., Ltd. | Optical recording/reproducing medium and apparatus using land and groove encoded information signals and identification signals including position information |
-
1990
- 1990-03-03 KR KR1019900702587A patent/KR920700446A/en not_active Application Discontinuation
- 1990-03-03 AU AU51755/90A patent/AU5175590A/en not_active Abandoned
- 1990-03-03 WO PCT/EP1990/000360 patent/WO1990012394A1/en unknown
- 1990-04-07 CN CN90101993A patent/CN1046239A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1046239A (en) | 1990-10-17 |
WO1990012394A1 (en) | 1990-10-18 |
AU5175590A (en) | 1990-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR840006721A (en) | Servo control circuit of information reproducing apparatus | |
JPS5750330A (en) | Optical recording and reproducing device | |
MY131532A (en) | Recording medium having track formed of land portion and groove portion, and reproducing apparatus therefor | |
ES2039526T3 (en) | PROCEDURE FOR AN OPTICAL SCAN DEVICE. | |
KR870009348A (en) | Optical recorder | |
KR950034131A (en) | Optics | |
KR840003511A (en) | Disc player | |
KR910018999A (en) | Drive on optical disc | |
KR920700446A (en) | Optical scanning device circuit of optical record and / or reproduction set | |
KR890002842A (en) | Optical beam controller | |
KR890016523A (en) | Magneto-optical recorder | |
KR950020488A (en) | Optical recorder | |
KR910013104A (en) | Optical disk unit | |
KR880011748A (en) | Optical disc recorder | |
KR880014533A (en) | Optical Wavelength Multiple Recorder | |
KR940024714A (en) | Optical pickup | |
KR920702529A (en) | Magneto-optical recording and playback equipment | |
CA2067654A1 (en) | Optical information recording and reproduction apparatus | |
KR890001034A (en) | Optical wavelength multiple recorder | |
KR880003295A (en) | Focus servo gain adjustment circuit of optical disc player | |
KR840005586A (en) | Focus servos for information readers | |
KR970050336A (en) | Optical pickup device | |
KR900002266A (en) | External magnetic field device of magneto-optical information recording and reproducing apparatus | |
KR890005680A (en) | Tracking error signal compensation circuit | |
KR890005684A (en) | Data player |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |