KR920022221A - Optical disc recording and playback device - Google Patents

Optical disc recording and playback device Download PDF

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Publication number
KR920022221A
KR920022221A KR1019910008500A KR910008500A KR920022221A KR 920022221 A KR920022221 A KR 920022221A KR 1019910008500 A KR1019910008500 A KR 1019910008500A KR 910008500 A KR910008500 A KR 910008500A KR 920022221 A KR920022221 A KR 920022221A
Authority
KR
South Korea
Prior art keywords
laser
signal output
output
level
waveform shaping
Prior art date
Application number
KR1019910008500A
Other languages
Korean (ko)
Other versions
KR0120530B1 (en
Inventor
하태용
Original Assignee
강진구
삼성전자 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910008500A priority Critical patent/KR0120530B1/en
Publication of KR920022221A publication Critical patent/KR920022221A/en
Application granted granted Critical
Publication of KR0120530B1 publication Critical patent/KR0120530B1/en

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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

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  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음No content

Description

광 디스크의 기록 및 재생 장치Optical disc recording and playback device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 광디스크의 기록 및 재생장치의 구성블럭도.1 is a block diagram showing the configuration of an optical disc recording and reproducing apparatus according to the present invention.

제2도는 제1도에 채용된 레이저 발광출력 제어부 및 픽업수단의 상세회로도.FIG. 2 is a detailed circuit diagram of the laser emission output control section and the pickup means employed in FIG.

제3도는 제2도에 따른 기록 및 재생시 레이저 발광출력을 설명하기 위한 도면.3 is a view for explaining the laser light output in the recording and playback according to FIG.

Claims (3)

용융점이 서로 다른 두층의 매질이 적층된 디스크를 구비한 광디스크 시스템에 있어서, 유입된 음향정보를 3진 데이타로 인코딩하기 위한 변조수단과, 상기 변조수단으로부터 출력되는 신호의 레벨에 따라 레이저량을 달리 투사하여 디스크의 매질의 용융정도를 제어하기 위한 레이저 발광출력제어수단과, 상기 발사된 레이저의 반사량을 픽업하는 픽업수단과, 상기 픽업수단으로부터 출력되는 고주파신호를 구형파신호로 변환하기 위한 파형정형수단과, 상기 파형정형수단으로부터 출력되는 신호를 디코딩하는 복조수단을 포함함을 특징으로 하는 광디스크의 기록 및 재생시스템.In an optical disc system having a disc in which two layers of media having different melting points are stacked, modulation means for encoding incoming acoustic information into ternary data, and laser amounts vary depending on the level of a signal output from the modulation means. Laser emission output control means for projecting and controlling the degree of melting of the medium of the disk, pickup means for picking up the amount of reflection of the emitted laser, and waveform shaping means for converting a high frequency signal output from the pickup means into a square wave signal; And demodulation means for decoding the signal output from the waveform shaping means. 제1항에 있어서, 상기 레이저 발광출력제어수단은 상기 변조수단의 데이타를 아날로그전압레벨로 변환시키기 위한 D/A변환기와, 상기 D/A변환기로부터 출력되는 전압레벨을 서밍하여 픽업수단의 레이저의 발광출력을 제어하는 전류용제한수단을 포함함을 특징으로 하는 광디스크의 기록 및 재생장치.The laser light output control means of claim 1, wherein the laser emission output control means includes a D / A converter for converting data of the modulation means into an analog voltage level, and a voltage level output from the D / A converter to sum the laser of the pickup means. And a current limiting means for controlling the luminous output. 제1항에 있어서, 상기 파형정형수단은 상기 픽업수단으로부터 출력되는 고주파신호의 레벨과 기준레벨을 비교하기 위한 제1 및 제2비교기를 포함함을 특징으로 하는 광디스크의 기록 및 재생장치.The recording and reproducing apparatus according to claim 1, wherein the waveform shaping means includes first and second comparators for comparing the level of the high frequency signal output from the pickup means with a reference level. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910008500A 1991-05-24 1991-05-24 Recording and reproducing apparatus of optical disk KR0120530B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910008500A KR0120530B1 (en) 1991-05-24 1991-05-24 Recording and reproducing apparatus of optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910008500A KR0120530B1 (en) 1991-05-24 1991-05-24 Recording and reproducing apparatus of optical disk

Publications (2)

Publication Number Publication Date
KR920022221A true KR920022221A (en) 1992-12-19
KR0120530B1 KR0120530B1 (en) 1997-10-27

Family

ID=19314897

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910008500A KR0120530B1 (en) 1991-05-24 1991-05-24 Recording and reproducing apparatus of optical disk

Country Status (1)

Country Link
KR (1) KR0120530B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100708105B1 (en) * 2000-11-01 2007-04-16 삼성전자주식회사 Data recoding and reproducing method on a storing medium with ternary pit structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100708105B1 (en) * 2000-11-01 2007-04-16 삼성전자주식회사 Data recoding and reproducing method on a storing medium with ternary pit structure

Also Published As

Publication number Publication date
KR0120530B1 (en) 1997-10-27

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