KR970009853A - Method and device for correction of sled motor driving voltage during optical disc recording and playback - Google Patents

Method and device for correction of sled motor driving voltage during optical disc recording and playback Download PDF

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Publication number
KR970009853A
KR970009853A KR1019950024114A KR19950024114A KR970009853A KR 970009853 A KR970009853 A KR 970009853A KR 1019950024114 A KR1019950024114 A KR 1019950024114A KR 19950024114 A KR19950024114 A KR 19950024114A KR 970009853 A KR970009853 A KR 970009853A
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KR
South Korea
Prior art keywords
voltage
sled motor
drive voltage
sled
signal
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Application number
KR1019950024114A
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Korean (ko)
Inventor
이종명
Original Assignee
구자홍
Lg 전자 주식회사
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Priority to KR1019950024114A priority Critical patent/KR970009853A/en
Publication of KR970009853A publication Critical patent/KR970009853A/en

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Abstract

본 발명은 광디스크 기록재생시 슬레드 모터 구동전압 보정방법 및 장치에 관한 것으로, 종래에는 슬레드 모터를 구동하는 구동전압은 모터나 기어등의 영향을 충분히 고려하지 않고 설정되어 있어서 각 세트마다 액세스 타임이 조금씩 다르고, 또 세트내에서도 포워드시나 백워드시에도 다른 액세스 시간차이를 갖게 되는 문제점이 있다. 따라서, 본 발명은 초기 파워-온시 일정 구동전압을 슬레드 모터에 가한 후 트랙수를 카운트하여 이송 거리를 판별하고 이 판별된 이송 거리에 따른 슬레드 모터 구동전압을 구하여 공급함으로써 마찰에 따른 광학 픽업의 이송 속도의 저하를 보상해주게 되어 포워드 액세스시와 백워드액세스 타임의 차를 줄일 수 있어 전체적으로 평균 액세스 타임을 줄일 수 있도록 한다.The present invention relates to a method and a device for correcting a sled motor driving voltage during recording and reproducing of an optical disc. Conventionally, a driving voltage for driving a sled motor is set without sufficiently considering the influence of a motor or a gear. This is slightly different, and there is a problem that there is a difference in access time between forward and backward in the set. Therefore, the present invention applies a constant drive voltage to the sled motor at initial power-on, counts the number of tracks to determine the transport distance, and obtains and supplies the sled motor drive voltage according to the determined transport distance, thereby providing optical pickup due to friction. Compensation for the lowering of the feed rate can reduce the difference between forward access and backward access time, thereby reducing the overall average access time.

Description

광디스크 기록재생시 슬레드 모터 구동전압 보정방법 및 장치Method and device for correction of sled motor driving voltage during optical disc recording and playback

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

제 1 도는 종래 광디스크 기록재생시 슬레드 모터 구동장치 구성도,1 is a configuration diagram of a sled motor driving device in recording and reproducing conventional optical discs;

제 2 도는 제 1 도에서, 구동 시간에 대한 이송거리를 보여주는 특성도,2 is a characteristic diagram showing a travel distance with respect to a driving time in FIG.

제 3 도는 슬레드 모터 구동전압과 트랙 카운트 신호파형도.3 is a waveform diagram of a sled motor driving voltage and a track count signal.

Claims (5)

초기에 파워-온시 포커스 서보 온, 트랙킹 및 CLV 서보를 오프명령을 내려 포커스 서보만 걸려있게 한 후 미리 설정된 기준전압을 기준시간만큼 가하여 슬레드 모터를 구동하는 단계와, 상기 단계에서 기준시간동안 트랙수를 카운트하는 단계와, 상기 단계에서 카운트된 트랙수와 기준 트랙수를 비교하는 단계와, 상기 단계에서 비교결과 카운트된 트랙수와 기준 트랙수가 같으면 미리 설정된 기준전압을 구동전압으로 그대로 적용하고, 카운트된 트랙수가 많으면 구동전압을 기준전압보다 작도록 하고 적으면 기준전압보다 큰 구동전압을 취하도록 하는 단계로 이루어진 것을 특징으로 하는 광디스크 기록재생시 슬레드 모터 구동전압 보정방법.Initially, focus servo on, tracking, and CLV servos are turned off at power-on to make only the focus servo engaged, and then the sled motor is driven by applying a preset reference voltage for a reference time, and the track for the reference time in the step. Counting the number, comparing the track count and the reference track count counted in the step; if the track count and the reference track count counted as a result of the comparison in the step are applied, the preset reference voltage is applied as the driving voltage, And a drive voltage that is smaller than the reference voltage when the number of tracks counted is large and a drive voltage that is larger than the reference voltage when the number of tracks is counted. 디스크상에서 읽어낸 데이터에 대한 광신호를 광학 픽업에서 전기적신호로 변환하여 출력하면 그 신호를 일정 레벨의 전기적 신호로 높이기 위한 고주파 증폭수단과; 상기 디스크상의 원하는 위치의 데이타를 찾기 위한 슬레드 모터를 구동하기 위한 제어신호를 출력하는 마이크로 컴퓨터와; 상기 마이크로 컴퓨터의 제어출력에 따라 일정한 구동 전압을 발생시키기 위한 구동전압 발생수단과; 상기 고주파 증폭수단의 출력신호를 받아 정상 동작시 서보신호를 출력하기 위한 슬레드 서보신호 발생수단과; 상기 마이크로 컴퓨터의 제어 출력에 따라 상기 구동전압 발생수단 또는 슬레드 서보신호 발생수단의 출력중 하나를 선택하여 모터 구동수단을 통해 슬레이드 모터로 공급하도록 하는 스위칭 수단으로 구성된 것을 특징으로 하는 광디스크 기록재생시 슬레드 모터 구동전압 보정장치.High frequency amplifying means for converting an optical signal for data read from the disk into an electrical signal in an optical pickup and for outputting the signal to a predetermined level of electrical signal; A microcomputer for outputting a control signal for driving a sled motor for finding data of a desired position on the disk; Drive voltage generation means for generating a constant drive voltage in accordance with the control output of said microcomputer; A sled servo signal generating means for receiving the output signal of the high frequency amplifying means and outputting a servo signal in a normal operation; And switching means for selecting one of the output of the driving voltage generating means or the sled servo signal generating means and supplying it to the slave motor through the motor driving means according to the control output of the microcomputer. Sled motor drive voltage compensation device. 제 2항에 있어서, 구동전압 발생수단을 로스패스필터인 것을 특징으로 하는 광디스크 기록재생시 슬레드 모터 구동전압 보정장치.3. The sled motor drive voltage correction device according to claim 2, wherein the drive voltage generating means is a loss pass filter. 제 2항에 있어서, 구동전압 발생수단은 일정한 구동전압을 스위칭수단의 한쪽 고정단자에 인가하는 전원단자(Vd)와, 상기 스위칭수단의 출력을 전달받아 마이크로 컴퓨터의 제어에 의한 이득을 조정하여 출력하는 전압제어용 증폭수단을 포함하는 것을 특징으로 하는 광디스크 기록재생시 슬레드 모터 구동전압 보정장치.3. The driving voltage generating means according to claim 2, wherein the driving voltage generating means receives a power supply terminal Vd for applying a constant driving voltage to one fixed terminal of the switching means, and receives the output of the switching means to adjust the gain under the control of the microcomputer. Sled motor drive voltage correction apparatus for recording and reproducing an optical disc, characterized in that it comprises a voltage control amplifying means. 제 4항에 있어서, 전압제어용 증폭수단은 마이크로 컴퓨터의 디지털/아날로그 출력단자로부터 출력되는 트랙 카운트수의 차에 의해 결정하는 것을 특징으로 하는 광디스크 기록재생시 슬레드 모터 구동전압 보정장치.5. The sled motor drive voltage correction device according to claim 4, wherein the voltage control amplifying means is determined by a difference in the number of track counts output from the digital / analog output terminal of the microcomputer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950024114A 1995-08-04 1995-08-04 Method and device for correction of sled motor driving voltage during optical disc recording and playback KR970009853A (en)

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KR1019950024114A KR970009853A (en) 1995-08-04 1995-08-04 Method and device for correction of sled motor driving voltage during optical disc recording and playback

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KR1019950024114A KR970009853A (en) 1995-08-04 1995-08-04 Method and device for correction of sled motor driving voltage during optical disc recording and playback

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606700B1 (en) * 1999-03-19 2006-07-31 엘지전자 주식회사 method for drive controlling sled motor and actuator and disc searching using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606700B1 (en) * 1999-03-19 2006-07-31 엘지전자 주식회사 method for drive controlling sled motor and actuator and disc searching using the same

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