KR930014519A - High speed positioning servo system of optical disk device - Google Patents

High speed positioning servo system of optical disk device Download PDF

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Publication number
KR930014519A
KR930014519A KR1019910025753A KR910025753A KR930014519A KR 930014519 A KR930014519 A KR 930014519A KR 1019910025753 A KR1019910025753 A KR 1019910025753A KR 910025753 A KR910025753 A KR 910025753A KR 930014519 A KR930014519 A KR 930014519A
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South Korea
Prior art keywords
signal
track
generating
tracking error
circuit means
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KR1019910025753A
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Korean (ko)
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KR930008492B1 (en
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우경찬
이영우
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정몽헌
현대전자산업 주식회사
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/03—Driving or moving of heads for correcting time base error during transducing operation, by driving or moving the head in a direction more or less parallel to the direction of travel of the recording medium, e.g. tangential direction on a rotating disc

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

Abstract

내용 없음No content

Description

광 디스크장치의 고속위치설정 서보시스템High speed positioning servo system of optical disk device

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

제 1 도는 본 발명에 따른 트래킹 에러신호 발생회로.1 is a tracking error signal generation circuit according to the present invention.

제 2 도는 제 1 도의 출력파형도.2 is an output waveform diagram of FIG.

제 3 도는 본 발명에 따른 고속위치설정 서보시스템의 전체 블럭 다이어그램.3 is an overall block diagram of a high speed positioning servo system according to the present invention.

제 4 도는 디스크의 왜곡에 따른 트래킹 에러신호의 파형도.4 is a waveform diagram of a tracking error signal according to distortion of a disk.

제 5 도는 본 발명에 따른 트래킹 에러 기준신호 발생회로.5 is a tracking error reference signal generation circuit according to the present invention.

제 6 도는 제 5 도의 각 부 파형도.6 is a view of each sub waveform of FIG.

제 7 도는 본 발명에 따른 샘플링 신호 발생회로.7 is a sampling signal generating circuit according to the present invention.

제 8 도는 제 7 도의 각 부 파형도.8 is a view of each sub waveform of FIG.

제 9 도는 본 발명에 따른 1트랙 보상회로.9 is a 1 track compensation circuit according to the present invention.

제 10 도는 제 9 도의 각 부 파형도.FIG. 10 is a view of each sub waveform of FIG.

제 11 도는 본 발명에 따른 위치설정작동시의 속도타이밍차트.11 is a speed timing chart in the positioning operation according to the present invention.

Claims (6)

요철형의 트랙구조를 가진 디스크상에 정보를 기록하거나 기록된 정보를 재생하는 광 디스크장치에 있어서, 이동트랙정보를 인가받아 그에 따른 각 수단의 제어를 행하는 처리수단(3)과 ; 이동될 트랙에 따른 에러를 검출하기 위한 가, 감속전압데이터, 샘플링시간에 대한 데이터 및 트래킹에러 기준전압 데이터 등을 저장하고 있는 저장수단(4)과 ; 상기 처리수단(3)의 제어에 따라 상기 저장수단(4)에 저장된 데이터를 읽어들여 초기 가속시와 감속종결시의 트래킹에러 기준전압을 발생하도록 하기 위한 트래킹에러 기준전압 발생수단(5)과 ; 상기 처리수단(3)의 제어에 따라 상기 저장수단(4)에 저장된 데이터를 읽어들여 액츄에이터의 가속후의 트래킹에러를 샘플링하도록 하기 위한 샘플링신호를 발생하는 샘플링신호발생수단(6)과 ; 상기 처리수단(3)의 제어에 따라 상기 저장수단(4)에 저장된 데이터를 읽어들여 이동트랙수에 따른 가, 감속신호를 발생하기 위한 액츄에이터 구동신호 발생수단(7)과 ; 트래킹 에러신호와 상기 트래킹에러 기준전압 발생수단(5)으로부터의 트래킹에러 기준신호와의 가산을 행하기 위한 제 1 가산기 수단(8)과 ; 상기 샘플링 신호발생수단(6)으로부터의 출력신호를 인가받아 상기 제1가산기수단(8)으로부터의 출력신호를 샘플링한후 소정 시간동안 유지하기 위한 S ＆ H 회로수단(9)과 ; 상기 S＆H 회로수단(9)으로부터의 출력신호를 소정위상으로 보상하기 위한 위상보상회로수단(10)과 ; 1트랙 이동시마다의 오차발생여부를 비교감지하여 오차가 발생하였을시 그에 따른 보상전압을 발생시키기 위한 1트랙 보상회로수단(11)과 ; 상기 액츄에이터 구동신호 발생수단(7)으로부터의 이동트랙수에 따른 가, 감속신호를 인가받아 그 신호의 입력대상개소를 선정하기 위한 스위칭 회로수단(12)과 ; 상기 액츄에이터 구동신호 발생수단(7), 위상보상회로수단(10) 및 1트랙 보상회로수단(11)의 각 출력측에 연결되어 이들로부터의 각 출력 신호를 가산하여 미세구동용 액츄에이터를 구동시키기 위한 제 2 가산기 수단(13)과 ; 상기 스위칭 회로수단(12)과 연결되어 상기 액츄에이터 구동신호 발생수단(7)으로부터의 출력신호를 인가받아 거친 구동용 액츄에이터를 구동시키기 위한 제 3 가산기 수단(14)을 구비하여서 된 것을 특징으로 하는 광 디스크장치의 고속 위치설정 서보시스템.An optical disc apparatus for recording information on a disc having an uneven track structure or reproducing the recorded information, comprising: processing means (3) for receiving movement track information and controlling each means accordingly; Storage means (4) for storing an acceleration, deceleration voltage data, data for a sampling time, a tracking error reference voltage data, and the like for detecting an error according to a track to be moved; Tracking error reference voltage generating means (5) for reading data stored in said storage means (4) to generate a tracking error reference voltage at the time of initial acceleration and deceleration termination under the control of said processing means (3); Sampling signal generating means (6) for generating a sampling signal for reading data stored in said storage means (4) and sampling a tracking error after acceleration of the actuator under the control of said processing means (3); An actuator drive signal generation means (7) for reading data stored in said storage means (4) under the control of said processing means (3) and generating acceleration and deceleration signals according to the number of moving tracks; First adder means (8) for adding a tracking error signal and a tracking error reference signal from said tracking error reference voltage generating means (5); S & H circuit means (9) for receiving the output signal from the sampling signal generating means (6) and for holding for a predetermined time after sampling the output signal from the first adder means (8); Phase compensation circuit means (10) for compensating the output signal from said S & H circuit means (9) to a predetermined phase; One track compensation circuit means (11) for comparing and detecting whether an error occurs every one track movement, and for generating a compensation voltage when an error occurs; Switching circuit means (12) for receiving an acceleration / deceleration signal corresponding to the number of movement tracks from the actuator drive signal generation means (7) and for selecting an input target point of the signal; Connected to each output side of the actuator driving signal generating means 7, the phase compensating circuit means 10, and the one track compensating circuit means 11, and adding each output signal therefrom to drive the actuator for fine driving; Two adder means 13; And a third adder means (14) connected to the switching circuit means (12) for receiving the output signal from the actuator drive signal generating means (7) to drive the coarse drive actuator. High speed positioning servo system of disk device. 제 1 항에 있어서, 샘플링 신호발생수단(6)은 트래킹 에러신호의 주파수가 높아짐에 따라 그에 상응하는 클럭신호를 발생하기 위한 클럭신호 발생수단(6a), 상기 클럭신호 발생수단(6a)으로부터 클럭신호를 분주하기 위한 분주수단(6b), 상기 분주수단(6b)에 의해 분주된 클럭신호중 하나만을 택일하여 송출하도록 하기 위한 스위칭 회로수단(6c) 및 상기 분주수단(6b)으로부터의 택일된 클럭신호를 카운트하기 위한 카운터수단(68)을 포함하는 것을 특징으로 하는 광 디스크장치의 고속위치설정 서보시스템.2. The clock signal generating means (6) according to claim 1, characterized in that the sampling signal generating means (6) is clocked from the clock signal generating means (6a) and the clock signal generating means (6a) for generating a clock signal corresponding to the frequency of the tracking error signal. A divider means 6b for dividing a signal, a switching circuit means 6c for selectively transmitting only one of the clock signals divided by the divider 6b, and an alternative clock signal from the divider 6b A high speed positioning servo system of an optical disc apparatus, comprising: a counter means (68) for counting. 제 1 항 또는 제 2 항에 있어서, 저장수단(4)에 저장된 카운트값에 대한 테이터는 광 비임의 트랙의 랜드부 또는 홈부를 지나가는 시간간격으로 되어 이를 샘플링신호 발생수단(6)의 카운터수단(68)에 인가하도록 되어진 것을 특징으로 하는 광 디스크장치의 고속위치설정 서보시스템.3. The data according to claim 1 or 2, wherein the data for the count value stored in the storage means 4 is a time interval passing by the land portion or groove portion of the track of the optical beam, and the counter means of the sampling signal generating means 6 68. A high speed positioning servo system for an optical disc apparatus, characterized in that it is adapted to apply. 제 2 항에 있어서, 카운터수단(6g)에서의 카운터가 종결되고, 난 후, 뒤이어 카운트할 데이터의 로드를 요구하는 데이터 요구신호를 상기 카운터수단(6g)으로부터 처리수단(3)으로 송출토록 되어진 것을 특징으로 하는 광 디스크장치의 고속위치설정 서보시스템.The method according to claim 2, wherein after the counter in the counter means 6g is terminated, a data request signal for requesting the loading of data to be counted is subsequently sent from the counter means 6g to the processing means 3. A high speed positioning servo system for an optical disk device, characterized in that. 제 2 항에 있어서, 액츄에이터가 소정속도이상으로 가속되었을시 스위칭 회로수단(6c)을 인에이블하기 위한 인에이블신호가 상기 스위칭 회로수단(6c)으로 인가되도록 한 것을 특징으로 하는 광 디스크장치의 고속위치설정 서보시스템.3. The high speed of the optical disc apparatus according to claim 2, wherein an enable signal for enabling the switching circuit means 6c is applied to the switching circuit means 6c when the actuator is accelerated to a predetermined speed or more. Positioning servo system. 제 1 항에 있어서, 1트랙 보상회로수단(11)은 트래킹 에러신호를 입력으로 하여 1트랙이동시마다의 펄스신호를 발생하도록 하는 제로크로싱 감지회로수단(11a), 샘플링된 트래킹 에러신호를 소정시간만큼 지연시키기 위한 지연수단(11b), 상기 제로크로싱 감지회로수단(11a) 및 지연수단(11b)의 각 출력측에 연결되어 1트랙만큼 적게 이동했는지의 여부를 비교하기 위한 제 1 비교수단(11c), 상기 제로크로싱 감지회로수단(11a) 및 지연수단(11b)의 각 출력측에 연결되어 1트랙만큼 많이 이동했는지의 여부를 비교하기 위한 제 2 비교수단(11d), 상기 제 1 비교수단(11c)의 출력측에 연결되어 1트랙만큼 적게 이동했을시의 보상전압을 발생시키기 위한 제 1 기준시간 설정수단(11e) 및 제 1 기준전압 발생수단(11f), 그리고 상기 제 2 비교수단(11d)의 출력측에 연결되어 1트랙만큼 많이 이동했을시의 보상전압을 발생시키기 위한 제 2 기준시간 설정수단(11g) 및 제 2 기준전압 발생수단(11h)을 포함하는 것을 특징으로 하는 광 디스크장치의 고속위치설정 서보시스템.2. The zero-crossing detection circuit means (11a) according to claim 1, wherein the one-track compensation circuit means (11) inputs a tracking error signal to generate a pulse signal for each track movement. A first comparison means 11c connected to each output side of the delay means 11b, the zero crossing sensing circuit means 11a, and the delay means 11b for delaying by as much as one track. Second comparing means (11d) and the first comparing means (11c), which are connected to each output side of the zero crossing sensing circuit means (11a) and the delay means (11b) to compare whether or not they have moved as much as one track. The first reference time setting means 11e and the first reference voltage generating means 11f for generating a compensation voltage when it is moved by one track less than the output side of the second track, and the output side of the second comparing means 11d. Connected to 1 track Than the second reference high-speed positioning servo system of the optical disk device comprises a time setting means (11g) and a second reference voltage generating means (11h) for generating a compensation voltage at the time when a lot of movement. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910025753A 1991-12-31 1991-12-31 Positioning servosystem for cdp KR930008492B1 (en)

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KR1019910025753A KR930008492B1 (en) 1991-12-31 1991-12-31 Positioning servosystem for cdp

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100477114B1 (en) * 2002-07-15 2005-03-17 삼성전자주식회사 Fan motor control apparatus and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100477114B1 (en) * 2002-07-15 2005-03-17 삼성전자주식회사 Fan motor control apparatus and method thereof

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