KR920700446A - Optical scanning device circuit of optical record and / or reproduction set - Google Patents

Optical scanning device circuit of optical record and / or reproduction set

Info

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
Application number
KR1019900702587A
Other languages
Korean (ko)
Inventor
프리트헬름 쭈커
크리스챤 뷔흘러
Original Assignee
롤프-디이터 베르거
도이체 톰손-브란트 게엠베하
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
Priority claimed from PCT/EP1989/000360 external-priority patent/WO1989009674A1/en
Priority claimed from DE3911525A external-priority patent/DE3911525A1/en
Application filed by 롤프-디이터 베르거, 도이체 톰손-브란트 게엠베하 filed Critical 롤프-디이터 베르거
Publication of KR920700446A publication Critical patent/KR920700446A/en

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

Abstract

내용 없음No content

Description

광 기록 및/또는 재생 세트의 광주사 장치회로Optical scanning device circuit of optical record and / or reproduction set

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)

광 기록 매체상에 도랑 형태인 음각부분(G) 또는 양각부분(L)으로서 광학적으로 기억되고, 데이타를 추적하는 광기록 및/또는 재생 세트의 광주사 장치회로에 있어서, 음각부분(G) 또는 양각부분(L) 사이의 자동절환을 위하여, 트랙추적제어회로(Ur)가 반전 증폭기(13)의 두개 입력에 공급되고, 그 출력(14)은 절환된 제어신호를 전달하고 피드백 통로(R2)를 통하여 반전 입력에 연결되며 그의 비반전 입력은 조절된 양(Us)에 의하여 제어된 스위치(15)를 통하여 접지되는 것을 특징으로 하는 광 기록 및/또는 재생세트의 광주사 장치회로.In the optical scanning device circuit of an optical recording and / or reproduction set optically stored as a recessed portion G or an embossed portion L in the form of a groove on an optical recording medium, the recessed portion G or For automatic switching between the embossed portions L, a track tracking control circuit Ur is supplied to the two inputs of the inverting amplifier 13, the output 14 of which transmits the switched control signal and the feedback passage R2. And a non-inverting input thereof is grounded through a switch (15) controlled by an adjusted amount (Us). 제1항에 있어서, 광 비임이 먼저 음각부분(G)과 양각부분(L)에 각각 향아여져 유용 신호(HF)가 존재하는지 조사되고, 유용 신호(HF)가 없을때 스위치(15)는 조절된 양(Us)을 절환시켜 광 비임이 이제는 양각부분(L)과 음각부분(G)을 주사하는 것을 특징으로 하는 광기록 및/또는 재생세트의 광주사 장치회로.2. The light beam of claim 1, wherein the light beam is first directed to the intaglio portion (G) and the relief portion (L), respectively, to check whether there is a useful signal (HF), and when there is no useful signal (HF), the switch (15) is adjusted. The optical scanning device circuit of the optical recording and / or reproducing set, characterized in that the light beam is now scanning the embossed portion (L) and the engraved portion (G) by switching the used amount (Us). 제1항 또는 제2항에 있어서, 피드백 통로가 저항기(R2)로 구성되는 것을 특징으로 하는 광기록 및/또는 재생세트의 광주사 장치회로.The optical scanning device circuit of claim 1 or 2, wherein the feedback passage is composed of a resistor (R2). 제1항, 제2항 또는 제3항에 있어서, 스위치가 전계효과 트랜지스터(15)에 의하여 실현되는 것을 특징으로 하는 광기록 및/또는 재생세트의 광주사 장치회로.4. The optical scanning device circuit of claim 1, 2 or 3, wherein the switch is realized by a field effect transistor (15). 제4항에 있어서, 트랜지스터(15)가 저항기(R4)에 의해서 바이패스되는 것을 특징으로 하는 광기록 및/또는 재생세트의 광주사 장치회로.5. The optical scanning device circuit of claim 4, wherein the transistor (15) is bypassed by a resistor (R4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900702587A 1989-04-03 1990-03-03 Optical scanning device circuit of optical record and / or reproduction set KR920700446A (en)

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
DEP39115259 1989-04-08
DE3911525A DE3911525A1 (en) 1988-11-17 1989-04-08 Circuit for detecting the type of an optical recording carrier

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
AU5175590A (en) 1990-11-05
CN1046239A (en) 1990-10-17
WO1990012394A1 (en) 1990-10-18

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Legal Events

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WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid