KR940007845A - Optical disc defect compensation method and device - Google Patents
Optical disc defect compensation method and device Download PDFInfo
- Publication number
- KR940007845A KR940007845A KR1019920016298A KR920016298A KR940007845A KR 940007845 A KR940007845 A KR 940007845A KR 1019920016298 A KR1019920016298 A KR 1019920016298A KR 920016298 A KR920016298 A KR 920016298A KR 940007845 A KR940007845 A KR 940007845A
- Authority
- KR
- South Korea
- Prior art keywords
- disk surface
- signal
- amplifying
- unit
- defect
- Prior art date
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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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
본 발명은 광디스크 시스템에 있어서 디스크면의 불량을 검출하여 디스크면의 불량을 보상하기 위한 것이다. 이를 위하여 디스크면의 불량상태를 검출하기 위한 디스크면 불량검출부와, 포커싱 제어신호를 증폭시키기 위한 포커싱 제어신호 증폭부와, 주변환경변화에 대하여 안정되고 동일한 레이저 파워를 출력하도록 제어하기 위한 레이저 파워 제어부와, 레이저 다이오드를 구동하기 위한 레이저 다이오드 구동부를 구비한 광디스크 시스템의 광디스크면 불량보상장치에 있어서, 디스크면 불량검출부에서 출력되는 신호를 소정의 증폭값을 갖도록 증폭하기 위한 증폭수단과, 증폭수단에서 출력되는 신호와 포커싱 제어신호 증폭부에서 증폭되는 신호를 선택적으로 스위칭하기 위한 스위칭수단과, 스위칭수단으로 선택적으로 출력되는 신호를 레이저 파워 제어부에서 출력되는 신호에 가산하여 레이저 다이오드 구동부로 인가하기 위한 가산부를 포함하도록 구성된다.The present invention is to compensate for the defect of the disk surface by detecting the defect of the disk surface in the optical disk system. To this end, a disk surface defect detection unit for detecting a defective state of the disk surface, a focusing control signal amplification unit for amplifying a focusing control signal, and a laser power control unit for controlling to output stable and identical laser power against changes in the surrounding environment. And an optical disk surface defect compensator of an optical disk system having a laser diode driver for driving a laser diode, the apparatus comprising: amplifying means for amplifying a signal output from the disk surface defect detector to have a predetermined amplification value; Switching means for selectively switching the output signal and the signal amplified by the focusing control signal amplifying unit, and an addition for applying to the signal output from the laser power control unit to the signal output from the laser power control unit to apply to the laser diode driver Including wealth It is configured.
따라서 디스크면의 불량정도에 따라서 레이저 파워를 증감시켜 출력함으로써 디스크면의 불량을 보상할 수 있다.Therefore, the failure of the disk surface can be compensated by increasing and decreasing the laser power according to the degree of defect of the disk surface.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 의한 광디스크면 불량보상장치의 블럭도,1 is a block diagram of an optical disk surface defect compensation apparatus according to the present invention;
제2도는 본 발명에 의한 광디스크면 불량보상장치의 상세 회로도,2 is a detailed circuit diagram of an optical disk surface defect compensation apparatus according to the present invention;
제3A~3E도는 제2도에 도시된 회로도의 각 부에 대한 동작파형도.3A to 3E are operating waveform diagrams for each part of the circuit diagram shown in FIG.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920016298A KR0141123B1 (en) | 1992-09-07 | 1992-09-07 | Optical disc surface imperfection compensation method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920016298A KR0141123B1 (en) | 1992-09-07 | 1992-09-07 | Optical disc surface imperfection compensation method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940007845A true KR940007845A (en) | 1994-04-28 |
| KR0141123B1 KR0141123B1 (en) | 1998-07-15 |
Family
ID=19339214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920016298A KR0141123B1 (en) | 1992-09-07 | 1992-09-07 | Optical disc surface imperfection compensation method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0141123B1 (en) |
-
1992
- 1992-09-07 KR KR1019920016298A patent/KR0141123B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR0141123B1 (en) | 1998-07-15 |
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Legal Events
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| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20050228 Year of fee payment: 8 |
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| LAPS | Lapse due to unpaid annual fee |