KR950020506A - Objective lens positioning device for optical pickup - Google Patents

Objective lens positioning device for optical pickup Download PDF

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Publication number
KR950020506A
KR950020506A KR1019930029896A KR930029896A KR950020506A KR 950020506 A KR950020506 A KR 950020506A KR 1019930029896 A KR1019930029896 A KR 1019930029896A KR 930029896 A KR930029896 A KR 930029896A KR 950020506 A KR950020506 A KR 950020506A
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KR
South Korea
Prior art keywords
motor driving
voltage
converting
slide motor
slide
Prior art date
Application number
KR1019930029896A
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Korean (ko)
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KR960013490B1 (en
Inventor
유형준
Original Assignee
이헌조
엘지전자 주식회사
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Application filed by 이헌조, 엘지전자 주식회사 filed Critical 이헌조
Priority to KR1019930029896A priority Critical patent/KR960013490B1/en
Publication of KR950020506A publication Critical patent/KR950020506A/en
Application granted granted Critical
Publication of KR960013490B1 publication Critical patent/KR960013490B1/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
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은 광 디스크 재생장치에 관한 것으로, 특히 슬라이드 서보계의 부하에 의해서 발생되는 슬라이드 모터의 데드존(dead zone)을 제거하여 픽업의 대물렌즈를 항상 중심에 위치시켜 슬라이드 서보계의 동작특성을 향상시키고자 한 광픽업의 대물렌즈 위치 보정장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk reproducing apparatus. In particular, the dead zone of the slide motor generated by the load of the slide servo system is eliminated so that the objective characteristic of the pickup is always centered so that the operating characteristics of the slide servo system can be improved. The present invention relates to an objective lens position correction device for optical pickup to be improved.

이러한 본 발명의 목적은 피이드백되는 전압에 따라 슬라이드 모터 구동전압을 증폭시켜 출력하는 슬라이드 모터구동수단과, 상기 슬라이드 모터 구동수단으로 부터 출력되는 모터 구동전압을 저역필터링하여 출력하는 저역필터링 수단과, 상기 저역 필터링 수단으로부터 출력된 전압의 레벨을 변환하여 상기 슬라이드 모터 구동수단에 피이드백시켜 모터 구동전압을 상승하도록 하는 전압 레벨변환수단을 구비함으로써 달성되어진다.An object of the present invention is a slide motor driving means for amplifying and outputting a slide motor driving voltage according to the feedback voltage, low-pass filtering means for low-pass filtering the motor driving voltage output from the slide motor driving means; And a voltage level converting means for converting the level of the voltage output from the low pass filtering means to feed back to the slide motor driving means to raise the motor driving voltage.

Description

광픽업의 대물렌즈 위치 보정장치Objective lens position correction device for optical pickup

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

제8도는 본 발명 광픽업의 대물렌즈 위치 보정장치 구성도.8 is a block diagram of the objective lens position correction device of the optical pickup according to the present invention.

제9도는 제8도의 상세회로도.9 is a detailed circuit diagram of FIG.

제11도는 본 발명에 따른 트랙킹전압, 슬라이드 귀환전압, 슬라이드 모터 구동전압과의 관계도.11 is a relationship diagram between a tracking voltage, a slide feedback voltage, and a slide motor driving voltage according to the present invention.

Claims (4)

피이드백되는 전압에 따라 슬라이드 모터 구동전압을 증폭시켜 출력하는 슬라이드 모터구동수단과, 상기 슬라이드 모터 구동수단으로 부터 출력되는 모터 구동전압을 저역필터링하여 출력하는 필터링수단과, 상기 필터링수단으로부터 출력된 저압의 레벨을 변환하여 상기 슬라이드 모터 구동수단에 피이드백시켜 상기 슬라이드 모터 구동전압을 조절하도록 하는 전압 레벨변환수단을 포함하여 된 것을 특징으로 한 광픽업의 대물렌즈 위치 보정장치.A slide motor driving means for amplifying and outputting a slide motor driving voltage according to a fed back voltage, filtering means for low-pass filtering the motor driving voltage output from the slide motor driving means, and a low pressure output from the filtering means. And a voltage level converting means for converting a level of the feed back to the slide motor driving means to adjust the slide motor driving voltage. 제1항에 있어서, 저역필터링 수단은 저항, 콘덴서로 이루어진 저역필터가 적어도 하나이상 구비된 것을 특징으로 한 광픽업의 대물렌즈 위치 보정장치.2. The objective lens position correction apparatus of claim 1, wherein the low pass filtering means comprises at least one low pass filter comprising a resistor and a capacitor. 제1항에 있어서, 전압레벨 변환수단은 상기 저역필터링수단으로부터 얻어진 전압을 반전증폭시켜 레벨을 변환하는 연산증폭기로 이루어짐을 특징으로 한 광픽업의 대물렌즈 위치 보정장치.The objective lens position correction apparatus of claim 1, wherein the voltage level converting means comprises an operational amplifier converting the level by inverting and amplifying the voltage obtained from the low pass filtering means. 피이드백되는 전압에 따라 슬라이드 모터구동전압을 증폭시켜 출력하는 슬라이드 모터구동수단과, 상기 슬라이드 모터구동수단으로부터 출력되는 모터구동전압을 그에 상응하는 디지탈 전압값으로 변환하는 아날로그/디지탈 변환수단과, 상기 아날로그/디지탈 변환수단으로부터 출력된 디지탈 전압값으로부터 최저값을 검출하여 출력하는 최저값 검출수단과, 상기 최저값 검출수단으로부터 출력된 최저값을 그에 대응하는 디지탈 전압값으로 변환하는 전압레벨 변환수단과, 상기 전압 레벨변환수단으로부터 출력된 디지탈 전압레벨 값을 그에 상응하는 아날로그 전압값으로 변환하여 상기 슬라이드 모터구동수단에 피이드백시키는 디지탈/아날로그 변환수단을 포함하여 된 것을 특징으로 한 광픽업의 대물렌즈 위치 보정장치.A slide motor driving means for amplifying and outputting a slide motor driving voltage according to a fed back voltage, an analog / digital converting means for converting a motor driving voltage output from the slide motor driving means into a corresponding digital voltage value, and A minimum value detecting means for detecting and outputting a minimum value from the digital voltage value output from the analog / digital converting means, a voltage level converting means for converting the lowest value output from the minimum value detecting means into a corresponding digital voltage value, and the voltage level And digital / analog converting means for converting the digital voltage level value output from the converting means into a corresponding analog voltage value to feed back to the slide motor driving means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029896A 1993-12-27 1993-12-27 Object lens position alignment apparatus of optical pick-up KR960013490B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029896A KR960013490B1 (en) 1993-12-27 1993-12-27 Object lens position alignment apparatus of optical pick-up

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029896A KR960013490B1 (en) 1993-12-27 1993-12-27 Object lens position alignment apparatus of optical pick-up

Publications (2)

Publication Number Publication Date
KR950020506A true KR950020506A (en) 1995-07-24
KR960013490B1 KR960013490B1 (en) 1996-10-05

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Application Number Title Priority Date Filing Date
KR1019930029896A KR960013490B1 (en) 1993-12-27 1993-12-27 Object lens position alignment apparatus of optical pick-up

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KR960013490B1 (en) 1996-10-05

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