KR980004445A - Optical Disc Player - Google Patents

Optical Disc Player Download PDF

Info

Publication number
KR980004445A
KR980004445A KR1019960021379A KR19960021379A KR980004445A KR 980004445 A KR980004445 A KR 980004445A KR 1019960021379 A KR1019960021379 A KR 1019960021379A KR 19960021379 A KR19960021379 A KR 19960021379A KR 980004445 A KR980004445 A KR 980004445A
Authority
KR
South Korea
Prior art keywords
light
voltage
actuator
detecting
disc
Prior art date
Application number
KR1019960021379A
Other languages
Korean (ko)
Other versions
KR100366408B1 (en
Inventor
김영중
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019960021379A priority Critical patent/KR100366408B1/en
Publication of KR980004445A publication Critical patent/KR980004445A/en
Application granted granted Critical
Publication of KR100366408B1 publication Critical patent/KR100366408B1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B2019/121—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark by photo-electric sensing

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 검출되는 광량이 최대치일때, 액츄에이터의 구동전압을 가지고 디스크를 판별하여 정확한 제어동작을 수행하기 위한 광디스크재생장치에 관한 것이다. 이 광디스크재생장치는, 광 초점을 조절하기 위한 전압을 인가받아 촛점렌즈의 위치를 가변시키는 엑츄에이터와, 상기 엑츄에이터에 의해 가변된 촛점렌즈의 위치로부터 입사되는 광량을 검출하는 광검출부와, 상기 엑츄에이터로 인가되는 촛점 조절 전압을 검출하는 전압검출부와; 상기 광검출부에서 출력되는 광량의 최대치를 검출하는 광량 최대치검출부와, 상기 광량 최대치검출부에서 최대치의 광량을 검출시, 상기 전압검출부의 출력 전압에 따라 디스크를 판단하는 디스크 판별부를 구비하는 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc reproducing apparatus for performing a precise control operation by determining a disc with a drive voltage of an actuator when the amount of light detected is maximum. The optical disc reproducing apparatus includes an actuator for varying the position of the focus lens by applying a voltage for adjusting the optical focus, a light detecting unit for detecting the amount of light incident from the position of the focus lens varied by the actuator, and the actuator. A voltage detector for detecting an applied focus control voltage; And a disc discrimination unit configured to determine a disc according to an output voltage of the voltage detector, when the light quantity maximum detector detects a maximum value of the light quantity output from the light detector. .

Description

광디스크재생장치Optical Disc Player

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

제2도는 본 발명에 따른 광디스크재생장치의 구성도.2 is a block diagram of an optical disc reproducing apparatus according to the present invention.

제3도는 본 발명에 따른 디스크판별회로의 상세 회로도.3 is a detailed circuit diagram of a disk discrimination circuit according to the present invention.

제4도는 본 발명에 따른 디스크 판별모드시의 재생장치 동작 상태도.4 is an operation state diagram of a playback device in disc discrimination mode according to the present invention;

Claims (2)

광 촛점을 조절하기 위한 전압을 인가받아 촛점렌즈의 위치를 가변시키는 엑츄에이터와, 상기 엑츄에이터에 의해 가변된 촛점렌즈의 위치로부터 입사되는 광량을 검출하는 광검출부와, 상기 엑츄에이터로 인가되는 촛점 조절 전압을 검출하는 전압검출부와; 상기 광검출부에서 출력되는 광량의 최대치를 검출하는 광량최대치검출부와; 상기 광량최대치검출부에서 최대치의 광량을 검출시, 상기 전압검출부의 출력 전압에 따라 디스크를 판단하는 디스크 판별부를 포함하여 구성됨을 특징으로 하는 광디스크재생장치.An actuator for varying the position of the focus lens by applying a voltage for adjusting the light focus, a light detector for detecting the amount of light incident from the position of the focus lens varied by the actuator, and a focus control voltage applied to the actuator A voltage detector for detecting; A light amount maximum value detection unit detecting a maximum value of the light amount output from the light detection unit; And a disc discrimination unit for determining a disc according to an output voltage of the voltage detection unit when the light quantity maximum value detecting unit detects a light amount having a maximum value. 제1항에 있어서, 상기 디스크판별부의 출력신호인 디스크 종류 판별결과에 따라 상기 엑츄에이터의 구동을 가변 제어하는 서보부를 포함하여 구성됨을 특징으로 하는 광디스크재생장치.The optical disc reproducing apparatus according to claim 1, further comprising a servo unit which variably controls driving of the actuator according to a disc type discrimination result which is an output signal of the disc discriminating unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960021379A 1996-06-14 1996-06-14 Apparatus for playing optical disk KR100366408B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960021379A KR100366408B1 (en) 1996-06-14 1996-06-14 Apparatus for playing optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960021379A KR100366408B1 (en) 1996-06-14 1996-06-14 Apparatus for playing optical disk

Publications (2)

Publication Number Publication Date
KR980004445A true KR980004445A (en) 1998-03-30
KR100366408B1 KR100366408B1 (en) 2003-03-15

Family

ID=37491114

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960021379A KR100366408B1 (en) 1996-06-14 1996-06-14 Apparatus for playing optical disk

Country Status (1)

Country Link
KR (1) KR100366408B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930008067B1 (en) * 1991-07-31 1993-08-25 삼성전자 주식회사 Disk sensing circuit used by tilt sensor
JPH0676328A (en) * 1992-08-28 1994-03-18 Sony Corp Focus servo control circuit
JP2880374B2 (en) * 1993-06-23 1999-04-05 シャープ株式会社 Focus control device for optical disk device
KR0181076B1 (en) * 1996-05-31 1999-04-15 배순훈 Apparatus for discriminating a kind of a disk in an optical disk player system

Also Published As

Publication number Publication date
KR100366408B1 (en) 2003-03-15

Similar Documents

Publication Publication Date Title
US4701603A (en) Focus control system for optical information recorder or player
KR970012532A (en) Disk drive apparatus and method for optical recording and reproduction
KR970060152A (en) Method and apparatus for disc discrimination in optical disc system
EP1610306A3 (en) Wobble signal detection circuit and optical disk device
US5901126A (en) Disk reproducing apparatus having a disk diameter determining function
KR970063172A (en) Discrimination method of optical discs having different thicknesses and optical devices using the same
KR980004445A (en) Optical Disc Player
US20030012096A1 (en) Disk drive device
KR910008668A (en) Focus input method of optical disk device
KR970011820B1 (en) Method of controlling focus position decision in opto-magnetic disc apparatus
JPS63244321A (en) Automatic focus draw-in adjusting device
KR960005481A (en) Focusing Servo Device for Optical Disc
KR970002925A (en) Recording Density Discrimination Device for Optical Discs
KR970050403A (en) Servo method of compact disc player
KR960042557A (en) Optical pickup device for compact disc player
JPH1049880A (en) Circuit and method for focus search of optical disk
KR970002926A (en) Focus Servo Movement Control
KR970017273A (en) Focus control device of optical disc player
KR970017237A (en) CD recording method and device
KR980004424A (en) CD / DVD combined optical pickup
KR970060155A (en) CDP's ESP automatic switching device and its method
KR960011877A (en) Focusing Servo Circuit of Disc Recording / Playback Device
JPS63300434A (en) Dew condensation detector for optical information recorder and reproducing device
JPS6273431A (en) Focusing position controller
KR19980065487A (en) Optical disc player for detecting and focusing disc tilt

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee