KR900018939A - Head position detection device and method of optical disk driver - Google Patents

Head position detection device and method of optical disk driver Download PDF

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Publication number
KR900018939A
KR900018939A KR1019890006205A KR890006205A KR900018939A KR 900018939 A KR900018939 A KR 900018939A KR 1019890006205 A KR1019890006205 A KR 1019890006205A KR 890006205 A KR890006205 A KR 890006205A KR 900018939 A KR900018939 A KR 900018939A
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KR
South Korea
Prior art keywords
data
generating
signal
lens offset
state
Prior art date
Application number
KR1019890006205A
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Korean (ko)
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KR910007448B1 (en
Inventor
정정주
Original Assignee
강진구
삼성전자 주식회사
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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Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019890006205A priority Critical patent/KR910007448B1/en
Publication of KR900018939A publication Critical patent/KR900018939A/en
Application granted granted Critical
Publication of KR910007448B1 publication Critical patent/KR910007448B1/en

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    • 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
    • G11B7/085Disposition 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

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

Abstract

내용 없음No content

Description

광 디스크 드라이버의 헤드위치 검출장치 및 방법Head position detection device and method of optical disk driver

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

제3도는 본 발명의 헤드위치 검출회로도.3 is a head position detection circuit diagram of the present invention.

제4도는 본 발명의 헤드위치 검출흐름도.4 is a head position detection flow chart of the present invention.

Claims (2)

렌지의 위치에 따른 액츄에이터 구동전류를 발생하는 헤드와, 트랙시크 및 렌즈 오프셋에 따른 데이타를 발생하며, 소정 디지탈 데이타를 수신하여 상기 렌지 오프셋 값을 조정하는 마이컴과, 상기 마이컴에서 발생하는 트랙시크 또는 렌즈 오프셋에 따른 데이타를 D/A변환하는 D/A변환기와, 액츄에이터 코일, 저항 및 캐패시터로 구성되어 상기 액츄에이터 구동전류를 현재 헤드위치에 따른 고정기준 전압으로 변환하는 수단과, 연산증폭기, 저항으로 구성되어 상기 D/A변환기의 가변 렌즈 오프셋신호를 비교전압으로 변환하는 수단과, 연산증폭기 및 저항으로 구성되어 상기 기준전압 및 비교전압의 상태에 따른 비교신호를 발생하는 수단과, 다이오드 및 인버터로 구성되어 상기 비교신호를 TTL레벨이 디지탈 데이타로 변환하여 상기 마이컴으로 출력하는 수단으로 구성됨을 특징으로 하는 광디스크 드라이버의 헤드위치 검출회로.A head for generating an actuator driving current according to the position of a stove; a micom for generating data according to track seek and lens offset; and receiving a predetermined digital data to adjust the range of the stove offset; A D / A converter for D / A conversion of data according to lens offset, an actuator coil, a resistor, and a capacitor. Means for converting the variable lens offset signal of the D / A converter into a comparison voltage, an operational amplifier and a resistor, means for generating a comparison signal according to the state of the reference voltage and the comparison voltage, a diode and an inverter. And converting the comparison signal into digital data having a TTL level and outputting the digital signal to the microcomputer. Of the optical disc driver, characterized by means adapted to the head position detecting circuit. 소정 비교신호에 따른 렌즈 오프셋값을 발생하는 마이컴과, 상기 마이컴의 출력을 D/A변환하여 렌즈 오프셋에 따른 가변신호를 발생하는 수단과, 현 헤드의 위치에 따른 고정 기준신호를 발생하는 수단과, 상기 기준신호 및 가변신호의 상태에 따른 비교신호를 발생하는 수단을 구비한 광디스크 드라이버의 헤드위치 검출방법에 있어서, 최초 렌즈 오프셋을 위한 제1데이타를 초기화하고 D/A변환할 가변 데이타인 제2데이타를 소정값으로 세트하는 제1과정과, 상기 제1 및 제2데이타를 가산하여 D/A변환 출력한후 상기 고정 기준신호와 비교된 신호를 수신하는 제2과정과, 상기 비교신호의 상태 변화가 없을시 상태 변화시까지 제2데이타를 감소하는 제3과정과, 상기 제3과정에서 비교상태 변화시 현재의 제1 및 제2데이타를 가산하여 제1데이타로 한후 제2데이타가 제로가 될때까지 감소하는 제4과정과, 상기 제2데이타가 제로가 될시의 제1데이타값을 렌즈 오프셋값을 선택하는 제5과정으로 이루어짐을 특징으로 하는 광디스크 드라이버의 헤드위치 검출방법.A microcomputer for generating a lens offset value according to a predetermined comparison signal, means for generating a variable signal according to a lens offset by D / A converting the output of the microcomputer, means for generating a fixed reference signal according to the position of the current head; A head position detection method of an optical disk driver having a means for generating a comparison signal according to the state of the reference signal and the variable signal, the method comprising: a variable data for initializing first data for an initial lens offset and performing D / A conversion; A first process of setting two data to a predetermined value, a second process of adding the first and second data to output a D / A conversion, and receiving a signal compared with the fixed reference signal; The third process of reducing the second data until the state change when there is no change of state, and adding the current first and second data to the first data after changing the comparative state in the third process, Fourth step and the second first optical disk driver, the head position detecting method in which a data value characterized constituted by any fifth step of selecting a lens offset value when data is to be equal to zero to decrease until the rudder zero. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890006205A 1989-05-10 1989-05-10 Detecting apparatus of the position of optical head unit KR910007448B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890006205A KR910007448B1 (en) 1989-05-10 1989-05-10 Detecting apparatus of the position of optical head unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890006205A KR910007448B1 (en) 1989-05-10 1989-05-10 Detecting apparatus of the position of optical head unit

Publications (2)

Publication Number Publication Date
KR900018939A true KR900018939A (en) 1990-12-22
KR910007448B1 KR910007448B1 (en) 1991-09-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890006205A KR910007448B1 (en) 1989-05-10 1989-05-10 Detecting apparatus of the position of optical head unit

Country Status (1)

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KR (1) KR910007448B1 (en)

Also Published As

Publication number Publication date
KR910007448B1 (en) 1991-09-26

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