KR890008794A - High-speed search device of compact disc (CD) player - Google Patents

High-speed search device of compact disc (CD) player Download PDF

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Publication number
KR890008794A
KR890008794A KR870013595A KR870013595A KR890008794A KR 890008794 A KR890008794 A KR 890008794A KR 870013595 A KR870013595 A KR 870013595A KR 870013595 A KR870013595 A KR 870013595A KR 890008794 A KR890008794 A KR 890008794A
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KR
South Korea
Prior art keywords
signal
point
speed search
output
integrator
Prior art date
Application number
KR870013595A
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Korean (ko)
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KR900008084B1 (en
Inventor
김성한
Original Assignee
최근선
주식회사 금성사
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.)
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Priority to KR1019870013595A priority Critical patent/KR900008084B1/en
Publication of KR890008794A publication Critical patent/KR890008794A/en
Application granted granted Critical
Publication of KR900008084B1 publication Critical patent/KR900008084B1/en

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, 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
    • G11B19/20Driving; Starting; Stopping; Control thereof
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

내용 없음No content

Description

콤팩트 디스크(CD) 플레이어의 고속 써치장치High-speed search device of compact disc (CD) player

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

제6도는 본 발명의 고속 써치장치의 블럭도.6 is a block diagram of a high-speed search device of the present invention.

제7도는 제6도의 슬라이드 구도회로와, 센서 코일의 출력을 이용하는 1/2지점 신호발생장치(적분기, 전압비교기, DAC)를 상세하게 도시한 회로도.FIG. 7 is a circuit diagram showing the slide composition circuit of FIG. 6 and the 1/2 point signal generator (integrator, voltage comparator, DAC) using the output of the sensor coil in detail.

제8도는 센서 코일과 선형 DC모터(LDM) 구동 코일 및 광학픽업.8 is a sensor coil and a linear DC motor (LDM) drive coil and optical pickup.

Claims (2)

광학 픽업의 광검출기의 출력을 입력받는 RF증폭기, 광검출기의 E-F신호를 증폭하는 E-F증폭기, 이E-F신호를 이용하는 트랙써보회로 및 트랙 구동회로를 포함하는 CD응용 제품의 고속 써치장치에 있어서, 슬라이더 모터로서 사용된 선형 DC모터, 이 모터에 연결되어 RF신호와 무관한 출력신호 전압을 발생시키는 센서코일, 브랙 구동회로의 DC값을 이용하는 슬라이드 구동회로부 및 센서 코일의 출력을 이용하는 적분기, 전압비교기 및 디지탈 아날로그 변환기로 이루어진 1/2지점 신호 발생장치로 구성되어, 센서 코일의 출력으로부터 픽업이 이동한 거리에 비례하는 신호를 추출하고 ROM베이블 안에 실험적으로 얻은 데이타를 넣어 그 값을 디지탈 아날로그 변환기에 입력시키고, 출력되는 아날로그 전압과 적분기의 출력을 비교하여, 써치하고자 하는 트랙 지점의 1/2지점에 픽업이 지나갈때 1/2지점신호가 발생하도록 하여 이 1/2지점 신호를 이용함으로써 고속 써치를 가능하게 하는 것을 특징으로 하는 콤팩트 디스크(CD) 플레이어의 고속 써치장치.A slider for a high-speed search apparatus for CD applications, including an RF amplifier receiving an output of an optical pickup of an optical pickup, an EF amplifier for amplifying the EF signal of the optical detector, a track servo circuit and a track driving circuit using the EF signal. Linear DC motor used as motor, sensor coil connected to this motor to generate output signal voltage independent of RF signal, slide drive circuit part using DC value of Brack driving circuit, integrator using output of sensor coil, voltage comparator and It consists of a 1/2 point signal generator consisting of a digital analog converter, extracting a signal proportional to the distance traveled by the pickup from the output of the sensor coil, and inserting the experimentally obtained data into the ROM cable to transfer the value to the digital analog converter. The track to input and compare the analog voltage and the output of the integrator Compact disk (CD) device, high-speed search is the player, characterized in that which enables high-speed search is by using a 1/2 signal to the pick-up to 1/2 of a point to a 1/2 point of signal generation when passing. 제1항에 있어서, ROM내에는 현재의 시간에서 트랙수를 계산하고 써치하고자 하는 지점의 시간으로 트랙수를 계산하여 점프해야할 트랙수를 계산하여 ROM내에 기억된 레이블을 이용하여 1/2지점의 거리에 해당하는 디지탈 아날로그 콘버터(63)값을 출력하며, 적분기를 온하는 제1단계와, 스위치(SS1),를 온하여 순방향 이동을 행한 다음1/2지점신호가 '하이'래벨인가를 검사하는 재2단계와, 1/2지점신호가 하이레벨이 아니면 제2단계로 되돌아가고 1/2지점신호가 하이레벨이면 디지탈 아날로그 변환기(63)의 디지탈 입력값을 2배로 하여 출력하는 제3단계와 스위치(SS2)를 온하여 역방향 브레이크를 작동 한 후 1/2지점신호가 있는가를 검사하는 제4단계와, 1/2지점신호가 없으면 제3단계로 되돌아 가고 1/2지점신호가 있으면 적분기(61)를 오프시켜 모든 작동을 종료하는 제5단계로 된 프로그램을 기억시켜서된 콤팩트 디스크(CD) 플래이어의 고속 써치장치.The ROM of claim 1, wherein the number of tracks is calculated at the current time in the ROM, the number of tracks is calculated at the time of the point to be searched, and the number of tracks to be jumped is calculated by using the label stored in the ROM. Outputs the value of the digital analog converter 63 corresponding to the distance, performs the first step of turning on the integrator, forwards the switch (SS 1 ), and then determines whether the 1/2 point signal is a 'high' label. A second step of inspection and a third step of returning to the second step if the 1/2 point signal is not at the high level and doubling the digital input value of the digital analog converter 63 if the 1/2 point signal is at the high level. The fourth step of checking whether there is a 1/2 point signal after turning on the step and the switch (SS 2 ) and if there is no 1/2 point signal, the process returns to step 3 and if there is a 1/2 point signal Turn off the integrator 61 to end all operations. A compact disk (CD) device, high-speed search is the flayers by storing the program in a fifth step of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870013595A 1987-11-30 1987-11-30 High-speed searching apparatus for cdp KR900008084B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870013595A KR900008084B1 (en) 1987-11-30 1987-11-30 High-speed searching apparatus for cdp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870013595A KR900008084B1 (en) 1987-11-30 1987-11-30 High-speed searching apparatus for cdp

Publications (2)

Publication Number Publication Date
KR890008794A true KR890008794A (en) 1989-07-12
KR900008084B1 KR900008084B1 (en) 1990-10-31

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Application Number Title Priority Date Filing Date
KR1019870013595A KR900008084B1 (en) 1987-11-30 1987-11-30 High-speed searching apparatus for cdp

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KR900008084B1 (en) 1990-10-31

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