KR840003509A - 디스크형 기록캐리어 판독장치 - Google Patents

디스크형 기록캐리어 판독장치 Download PDF

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Publication number
KR840003509A
KR840003509A KR1019830000168A KR830000168A KR840003509A KR 840003509 A KR840003509 A KR 840003509A KR 1019830000168 A KR1019830000168 A KR 1019830000168A KR 830000168 A KR830000168 A KR 830000168A KR 840003509 A KR840003509 A KR 840003509A
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South Korea
Prior art keywords
radiation
detectors
output signals
signal
signal forming
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KR1019830000168A
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English (en)
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KR880001174B1 (ko
Inventor
반 디직 아트
Original Assignee
디. 제이. 싹커스
엔. 브이. 필립스 글로아이람펜파브리켄
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Publication of KR840003509A publication Critical patent/KR840003509A/ko
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Publication of KR880001174B1 publication Critical patent/KR880001174B1/ko

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    • 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
    • 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
    • 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
    • G11B7/13—Optical detectors therefor

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음

Description

디스크형 기록캐리어 판독장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 판독장치의 실시예를 나타낸 개략도.
제2도는 기록캐리어상의 복사점의 위치를 도시한 도면.
제3도는 트랙방향과 교차하는 이동의 경우에 검출기의 출력신호의 변화를 나타낸 도면.
제4도는 복사 보조시스템의 주파수 특성의 예를 도시한 도면.
제5도는 본 발명에 따른 장치에 의하여 얻어진 제어신호의 변화를 나타낸 도면.
제6도는 본 발명에 따른 장치에 사용된 제어장치를 나타낸 블록선도.
제7도는 제어장치의 상세한 회로도.
제8도는 결과적인 제어신호 Vc의 변화를 나타낸 도면.

Claims (4)

  1. 세 복사빔을 발생하여 제1, 제2 및 제3 복사점으로서 기록캐리어상에 상기 복사빔을 투사하는 광학 시스템이 제2 및 제3 복사점이 트랙방향에 횡단방향으로 제1복사점의 반대측면상에 위치하며 제1복사점의 중심을 통하여 신장되며, 정보트랙에 평행한 각 중심과 축 사이의 거리는 적어도 정보트랙의 트랙과치의 1/4이 되며, 제1, 제2 및 제3 검출기가 각각 제1 제2 및 제3 복사점과 일치하는 복사빔내의 휘도에너지량을 검출하여 이러한 휘도에너지를 대응하는 전기출력신호로 변환하며, 트래킹시스템이 복사빔과 상호 협동하여 정보트랙에서 제1 복사점을 중심 설정하며, 제2 및 제3 검출기에 연결된 제어장치는 제2 및 제3 검출기의 출력신호 사이의 차에 좌우되는 트래킹시스템 제어신호를 발생하는 실질적 동심의 정보트랙을 갖는 디스크형 기록캐리어 판독장치에 있어서, 제어장치가 제1검출기와 연결되어 공식에 따라 제어신호 Vc를 공급하며 여기서 VC, VR1및 VR2는 각각 제1, 제2 및 제3검출기의 출력신호인 것을 특징으로 하는 디스크형 기록캐리어 판독장치.
  2. 제1항의 장치에 있어서, 제어장치가 제1차신호 형성단을 포함하여 제2 및 제3검출기의 출력신호의 차를 결정하며, 제2차신호 형성단을 포함하여 제2및 제3검출기의 출력신호의 합과 제1검출기의 출력신호사이의 차를 결정하며, 구동단을 포함하여 제1 및 제2차신호 형성단의 출력신호의 몫을 결정하여 거기에 일치하는 제어신호를 공급하는 것을 특징으로 하는 디스크형 기록캐리어 판독장치.
  3. 제2항의 장치에 있어서, 제2차신호 형성단 및 구동단 사이에 증폭기가 배치되어 상기 제2차신호 형성단의 출력신호가 모듈러스(moulus)동작을 하도록 하는 것을 특징으로 하는 디스크형 기록캐리어 판독장치.
  4. 제2항의 장치에 있어서, 제2차신호 형성단이 제1, 제2 및 제3검출기의 출력신호의 합에 비례하는 제1입력신호를 받아들이는 것을 특징으로 하는 디스크형 기록캐리어 판독장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019830000168A 1982-01-21 1983-01-18 디스크형 기록캐리어 판독장치 KR880001174B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL208 1982-01-21
NL8200208A NL8200208A (nl) 1982-01-21 1982-01-21 Inrichting voor het uitlezen van een schijfvormige registratiedrager.
NL8200208 1982-01-21

Publications (2)

Publication Number Publication Date
KR840003509A true KR840003509A (ko) 1984-09-08
KR880001174B1 KR880001174B1 (ko) 1988-07-02

Family

ID=19839113

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019830000168A KR880001174B1 (ko) 1982-01-21 1983-01-18 디스크형 기록캐리어 판독장치

Country Status (13)

Country Link
US (1) US4446545A (ko)
JP (1) JPS58125243A (ko)
KR (1) KR880001174B1 (ko)
AU (1) AU552691B2 (ko)
BE (1) BE895655A (ko)
CA (1) CA1194229A (ko)
DE (1) DE3301702A1 (ko)
ES (1) ES519100A0 (ko)
FR (1) FR2520145A1 (ko)
GB (1) GB2113872B (ko)
IT (1) IT1167553B (ko)
NL (1) NL8200208A (ko)
SG (1) SG97085G (ko)

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Also Published As

Publication number Publication date
US4446545A (en) 1984-05-01
GB2113872B (en) 1985-09-25
FR2520145A1 (fr) 1983-07-22
IT1167553B (it) 1987-05-13
KR880001174B1 (ko) 1988-07-02
NL8200208A (nl) 1983-08-16
IT8319161A0 (it) 1983-01-18
AU1063583A (en) 1983-07-28
ES8400833A1 (es) 1983-11-01
BE895655A (fr) 1983-07-19
DE3301702C2 (ko) 1991-05-08
SG97085G (en) 1986-07-25
GB8301154D0 (en) 1983-02-16
FR2520145B1 (ko) 1984-12-28
ES519100A0 (es) 1983-11-01
JPH0332143B2 (ko) 1991-05-10
AU552691B2 (en) 1986-06-12
JPS58125243A (ja) 1983-07-26
CA1194229A (en) 1985-09-24
DE3301702A1 (de) 1983-07-28
GB2113872A (en) 1983-08-10

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