KR960038786A - Method and apparatus for detecting position of optical pickup - Google Patents

Method and apparatus for detecting position of optical pickup Download PDF

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Publication number
KR960038786A
KR960038786A KR1019950009627A KR19950009627A KR960038786A KR 960038786 A KR960038786 A KR 960038786A KR 1019950009627 A KR1019950009627 A KR 1019950009627A KR 19950009627 A KR19950009627 A KR 19950009627A KR 960038786 A KR960038786 A KR 960038786A
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KR
South Korea
Prior art keywords
pulse signal
optical pickup
counting
slad
converting
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KR1019950009627A
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Korean (ko)
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KR100188931B1 (en
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곽남수
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김광호
삼성전자 주식회사
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Priority to KR1019950009627A priority Critical patent/KR100188931B1/en
Publication of KR960038786A publication Critical patent/KR960038786A/en
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Publication of KR100188931B1 publication Critical patent/KR100188931B1/en

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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
    • 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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • 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)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은 CD-ROM 드라이브(Compact Disk Only Memory drive)에 있어서 광 픽업의 위치 검출방법 및 장치에 관한 것으로서, 슬래드 전동기의 회전시 전압을 유가시키는 호올 센서; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 비교기; 그리고 상기 펄스 신호를 계수하여 광 픽업의 위치를 추정하는 마이크로컴퓨터; 를 포함한 것을 특징으로 하여, 광 픽업의 빠른 이동시에도 정확한 위치를 검출할 수 있을 뿐만 아니라 재현성(Resolution)을 증진시킬 수 있다.The present invention relates to a method and apparatus for detecting a position of an optical pickup in a CD-ROM drive (Compact Disk Only Memory drive), comprising: a hool sensor for supplying a voltage during rotation of a slad electric motor; A comparator for converting the induced voltage into the form of a pulse signal; And a microcomputer for counting the pulse signal to estimate the position of the optical pickup; Characterized in that it can be, as well as detect the exact position even during the rapid movement of the optical pickup can improve the reproducibility (Resolution).

Description

광 픽업의 위치 검출방법 및 장치Method and apparatus for detecting position of optical pickup

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 광 픽업의 위치 검출방법을 나타낸 흐름도이다, 제2도는 제1도에 의거한 광 픽업의 위치 검출장치를 나타낸 블럭도이다, 제3도는 제2도에 의거한 광 픽업의 위치 검출 회로도이다.1 is a flowchart showing a position detection method of an optical pickup according to the present invention. FIG. 2 is a block diagram showing a position detection apparatus of an optical pickup according to FIG. 1, and FIG. 3 is an optical pickup based on FIG. Is a position detection circuit diagram.

Claims (9)

슬래드 전동기의 구동시 전압을 유기시키는 단계; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 단계; 상기 펄스 신호를 계수하는 단계; 그리고 상기 계수값으로써 광픽업의 위치를 추정하는 단계;를 포함하는 것을 특징으로 하는 광 픽업의 위치 검출방법.Inducing a voltage when driving the slad electric motor; Converting the induced voltage into the form of a pulse signal; Counting the pulse signal; And estimating the position of the optical pickup based on the count value. 슬래드 전동기의 회전시 전압을 유기시키는 호을 센서; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 비교기; 그리고 상기 펄스 신호를 계수하여 광 픽업의 위치를 추정하는 마이크로컴퓨터;를 포함한 것을 그 특징으로 하는 광 픽업의 위치 검출장치.An arc sensor for inducing a voltage during rotation of the slad motor; A comparator for converting the induced voltage into the form of a pulse signal; And a microcomputer for counting the pulse signal to estimate the position of the optical pickup. 슬래드 전동기의 회전시 전압을 유기시키는 호올 센서; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 비교기; 상기 펄스 신호의 파형을 정형화(formation)시키는 슈미트 트리거부; 그리고 상기 펄스 신호를 계수하여 광 픽업의 위치를 추정하는 마이크로컴퓨터;를 포함한 것을 그 특징으로 하는 광 픽업의 위치 검출장치.A hool sensor for inducing a voltage during rotation of the slad electric motor; A comparator for converting the induced voltage into the form of a pulse signal; A Schmitt trigger unit for shaping the waveform of the pulse signal; And a microcomputer for counting the pulse signal to estimate the position of the optical pickup. 슬래드 전동기의 회전시 전압을 유기시키는 호올 센서; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 비교기; 상기 펄스 신호의 상승 시점(Rising time)과 하강 시점(Falling time)에서 각각 펄스가 발생되는 엣지 검출부; 그리고 상기 펄스 신호를 계수하여 광 픽업의 위치를 추정하는 마이크로컴퓨터;를 포함한 것을 그 특징으로 하는 광 픽업의 위치 검출장치.A hool sensor for inducing a voltage during rotation of the slad electric motor; A comparator for converting the induced voltage into the form of a pulse signal; An edge detector for generating a pulse at each of a rising time and a falling time of the pulse signal; And a microcomputer for counting the pulse signal to estimate the position of the optical pickup. 제4항에 있어서, 상기 엣지 검출부는, 콘덴서의 충방전 특성 및 배타적 OR게이트(Exclusive-OR Gate)의 기능을 조합시킨 것을 그 특징으로 하는 광 픽업의 위치 검출장치.The optical pickup position detecting apparatus according to claim 4, wherein the edge detector combines the charge and discharge characteristics of the capacitor and the function of an exclusive OR gate. 슬래드 전동기의 회전시 전압을 유기시키는 호올 센서; 상기 유기 전압을 펄스 신호의 형태로 변환시키는 비교기; 상기 펄스 신호의 파형을 정형화(formation)시키는 슈미트 트리거부; 상기 정형화된 펄스 신호의 상승 시점(Rising time)과 하강 시점(Falling time)에서 각각 펄스가 발생되는 엣지 검출부; 그리고 상기 펄스 신호를 계수하여 광 픽업의 위치를 추정하는 마이크로컴퓨터; 를 포함한 것을 그 특징으로 하는 광 픽업의 위치 검출 장치.A hool sensor for inducing a voltage during rotation of the slad electric motor; A comparator for converting the induced voltage into the form of a pulse signal; A Schmitt trigger unit for shaping the waveform of the pulse signal; An edge detector configured to generate a pulse at a rising time and a falling time of the shaped pulse signal, respectively; And a microcomputer for counting the pulse signal to estimate the position of the optical pickup; Optical pickup position detection device comprising a. 제6항에 있어서, 상기 엣지 검출부는, 콘덴서의 충방전 특성 및 배타적 OR 게이트(Exclusive-OR Gate)의 기능을 조합시긴 것을 그 특징으로 하는 광 픽업의 위치 검출장치.The optical pickup position detecting apparatus according to claim 6, wherein the edge detector combines the charge and discharge characteristics of the capacitor and the function of an exclusive-OR gate. 슬래드 전동기의 회전시 소정의 위상차로써 전압을 유지시키는 복수 개의 호올 센서들; 상기 호올 센서들의 출력을 각각 펄스 신호의 형태를 변환시키는 복수 개의 비교기들; 상기 펄스 신호들의 상승 시점(Rising time)과 하강 시점(Falling time)에서 각각 소정의 펄스 신호를 발생시키는 복수 개의 엣지 검출부들; 상기 엣지 검출부들의 출력 신호들을 OR 결합시키는 OR 게이트; 그리고 상기 OR 게이트의 출력 신호를 계수하여 광픽업의 위치를 추정하는 마이크로컴퓨터;를 포함한 것을 그 특징으로 하는 광 픽업의 위치 검출장치.A plurality of hool sensors for maintaining a voltage with a predetermined phase difference when the slad motor rotates; A plurality of comparators for converting the output of the hool sensors into the shape of a pulse signal, respectively; A plurality of edge detectors generating a predetermined pulse signal at each of a rising time and a falling time of the pulse signals; An OR gate for OR combining the output signals of the edge detectors; And a microcomputer for counting the output signal of the OR gate to estimate the position of the optical pickup. 제8항에 있어서, 상기 엣지 검출부들은, 콘덴서의 충방전 특성 및 배타적 OR 게이트(Exclusive-OR Gate)의 기능을 조합시킨 것을 그 특징으로 하는 광 픽업의 위치 검출장치.10. The apparatus of claim 8, wherein the edge detectors combine a charge / discharge characteristic of a capacitor and a function of an exclusive-OR gate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950009627A 1995-04-24 1995-04-24 Position detection method and apparatus KR100188931B1 (en)

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KR1019950009627A KR100188931B1 (en) 1995-04-24 1995-04-24 Position detection method and apparatus

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Application Number Priority Date Filing Date Title
KR1019950009627A KR100188931B1 (en) 1995-04-24 1995-04-24 Position detection method and apparatus

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KR960038786A true KR960038786A (en) 1996-11-21
KR100188931B1 KR100188931B1 (en) 1999-06-01

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KR100475571B1 (en) 2002-11-29 2005-03-10 삼성전자주식회사 Coma Aberration Correcting Apparatus in Optical Pickup

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