KR970007883A - Optical disk apparatus for data recording and reproduction - Google Patents

Optical disk apparatus for data recording and reproduction Download PDF

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Publication number
KR970007883A
KR970007883A KR1019960027432A KR19960027432A KR970007883A KR 970007883 A KR970007883 A KR 970007883A KR 1019960027432 A KR1019960027432 A KR 1019960027432A KR 19960027432 A KR19960027432 A KR 19960027432A KR 970007883 A KR970007883 A KR 970007883A
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KR
South Korea
Prior art keywords
signal
recording
generating
optical
track
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Application number
KR1019960027432A
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Korean (ko)
Other versions
KR100237333B1 (en
Inventor
야스히토 소마
마사유키 시바노
Original Assignee
모리시다 요이찌
마쓰시타 덴키 산교 가부시키가이샤
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Publication of KR970007883A publication Critical patent/KR970007883A/en
Application granted granted Critical
Publication of KR100237333B1 publication Critical patent/KR100237333B1/en

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Classifications

    • 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
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • 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
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • 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
    • G11B7/0901—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 for track following only

Landscapes

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

Abstract

본원은 데이타를 피트에 의해 트랙에 따라 기록하는 피트 영역과 데이터를 기록하기 위해 트랙을 따라 홈을 형성하고 있는 홈 영역을 갖는 광디스크에 데이타를 기록 및 재생하는 광디스크 장치이다. 광 디스크 장치는 광빔을 과학 디스크상에 투사하는 광학 헤드(104)와 반사된 광을 수신하는 광검출기 어래이(119)를 포함한다. 전치증포기(107)는 트랙킹 에러신호 및 피트를 나타내는 RF 신호를 발생시키는 광검출기 어래이에 연결된다. 트랙킹 에러 신호가 플립-플롭(204,205)에서 클럭 신호로서 사용되고 RF 신호는 초기 세팅신호로서 사용되어 플립-플롭(205)은 광학 헤드가 피트 영역에 있는 것을 표시하는 신호를 발생시킨다.The present invention relates to an optical disc apparatus for recording and reproducing data on and from an optical disc having a pit area for recording data on a track by a pit and a groove area for forming a groove along the track for recording data. The optical disk apparatus includes an optical head 104 for projecting a light beam onto a scientific disk and a photodetector array 119 for receiving the reflected light. The pre-amplifier 107 is coupled to a photodetector array that generates a tracking error signal and an RF signal indicative of the pit. A tracking error signal is used as the clock signal in the flip-flops 204 and 205 and the RF signal is used as the initial setting signal so that the flip-flop 205 generates a signal indicating that the optical head is in the pit area.

Description

데이타 기록 및 재생용 광학 디스크 장치Optical disk apparatus for data recording and reproduction

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 제1실시예에 따른 광학 디스크 장치의 블럭도, 제2도는 제1도에 도시된 전치증폭기 및 피트(pit) 영역검출회로를 상세화 시킨 블럭도.FIG. 1 is a block diagram of an optical disc apparatus according to a first embodiment of the present invention, and FIG. 2 is a block diagram in detail of a preamplifier and pit region detection circuit shown in FIG.

Claims (7)

데이타를 피트에 의해 트랙에 따라 기록하는 피트 영역과 데이타를 기록하기 위해 트랙을 따라 홈을 형성하고 있는 홈 영역을 갖는 광 디스크에 데이타를 기록 및 재생하는 광학 디스크 장치에 있어서: 광빔을 상기 광학 디스크 상에서 투사하고 반사광을 토대로 한 전기신호를 광학 디스크로부터 발생시키는 광학 헤드 수단(104)과; 상기 전기 신호를 토대로 하며 상기 피트를 나타내는 RF 신호를 발생시키는 제1발생수단(107a)과; 각 파동이 상기 트랙의 횡단을 나타내고, 상기 전기 신호를 토대로 한 파동 신호를 발생시키는 제2발생수단과(107b)과; 상기 파동 신호를 사용해서 클럭 신호를 발생시키는 클럭 발생수단(202,203)과; 상기 RF 신호를 검출하고 상기 RF 신호의 존재를 표시하는 RF 검출 신호를 발생시키는 검출수단(201)과; 상기 클럭신호 및 상기 RF 신호를 수신하고, 상기 광학 헤드 수단(104)이 기 결정된 수의 틀랙을 횡단할 때, 피트 영역 검출 신호를 발생하는 영역 검출수단(204,205)를 구비하는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.1. An optical disk apparatus for recording and reproducing data on and from an optical disk having a pit area for recording data along a track by a pit and a groove area for forming a groove along the track for recording data, Optical head means 104 for generating an electrical signal based on the reflected light from the optical disk; First generating means (107a) for generating an RF signal based on the electrical signal and representing the pit; Second generating means (107b) for generating a wave signal based on the electric signal, each wave representing a traverse of the track; Clock generating means (202,203) for generating a clock signal using the wave signal; Detecting means (201) for detecting the RF signal and generating an RF detection signal indicative of the presence of the RF signal; Area detecting means (204, 205) for receiving the clock signal and the RF signal, and generating a pit area detection signal when the optical head means (104) traverses a predetermined number of frames, An optical disk apparatus for recording and reproducing. 제1항에 있어서, 상기 광학 헤드가 광빔원을 방사 방향으로 이동시키는 트랙킹 작동기(117)를 구비하는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.The optical disk apparatus for data recording and reproducing according to claim 1, characterized in that the optical head has a tracking actuator (117) for moving the light beam source in the radial direction. 제2항에 있어서, 상기 파동 신호를 상기 트랙킹 에러 신호로서 수신하고 상기 트랙킹 작동기를 작동하기 위해 작동 신호를 발생시키는 루프 필터(110)를 더 구비함으로써 상기 광빔이 상기 트랙상에서 유지되는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.3. The apparatus of claim 2, further comprising a loop filter (110) that receives the wave signal as the tracking error signal and generates an actuation signal to operate the tracking actuator, whereby the light beam is held on the track An optical disk device for recording and reproducing data. 제3항에 있어서, 상기 피트 영역 검출 신호가 상기 피트 영역이 트랙킹 에러 신호 및 상기 흠 영역의 트랙킹 에러 신호간의 상기 트랙킹 에러 신호의 극성을 변화시키기 위해 사용되는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.The optical recording and reproducing apparatus according to claim 3, characterized in that the pit area detection signal is used for changing the polarity of the tracking error signal between the tracking error signal and the tracking error signal of the flaw area, Disk device. 제2항에 있어서, 상기 광빔이 트랙을 횡단할 때, 상기 트랙킹 작동기(117)를 상기 루프 필터(110)로부터 차단시키는 차단수단(116)을 더 구비하는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.The optical recording and reproducing apparatus according to claim 2, further comprising blocking means (116) for blocking the tracking actuator (117) from the loop filter (110) when the light beam traverses a track Disk device. 제2항에 있어서, 트랙을 횡단시키기 위해 상기 광빔을 강제적으로 만드는 상기 트랙킹 작동기(117)에 강제 신호를 발생시키는 강제 트랙킹 구동수단(501)을 더 구비하는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.3. The optical recording and reproducing apparatus according to claim 2, further comprising forced tracking driving means (501) for generating a forced signal to said tracking actuator (117) for forcibly making said light beam to traverse a track Disk device. 제1항에 있어서, 상기 기결정된 트랙수가 광학 디스크의 편심량에 의해 커버된 트랙수 보다 크게 되는 것을 특징으로 하는 데이타 기록 및 재생용 광학 디스크 장치.The optical disc apparatus for data recording and reproducing according to claim 1, wherein the predetermined number of tracks is larger than the number of tracks covered by the eccentricity of the optical disc. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960027432A 1995-07-07 1996-07-08 Optical disk apparatus with the identification circuit for groove/pit region KR100237333B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP95-171843 1995-07-07
JP17184395 1995-07-07

Publications (2)

Publication Number Publication Date
KR970007883A true KR970007883A (en) 1997-02-21
KR100237333B1 KR100237333B1 (en) 2000-01-15

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KR101534670B1 (en) * 2013-12-19 2015-07-07 최우석 Apparatus for discriminating on track of optical pickup device and method thereof

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