KR970023199A - Position error control device and method of magneto-optical disk device - Google Patents

Position error control device and method of magneto-optical disk device Download PDF

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Publication number
KR970023199A
KR970023199A KR1019950036147A KR19950036147A KR970023199A KR 970023199 A KR970023199 A KR 970023199A KR 1019950036147 A KR1019950036147 A KR 1019950036147A KR 19950036147 A KR19950036147 A KR 19950036147A KR 970023199 A KR970023199 A KR 970023199A
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KR
South Korea
Prior art keywords
area
signal
pickup
moving
magneto
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Application number
KR1019950036147A
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Korean (ko)
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KR100197593B1 (en
Inventor
이동진
Original Assignee
김광호
삼성전자 주식회사
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Priority to KR1019950036147A priority Critical patent/KR100197593B1/en
Publication of KR970023199A publication Critical patent/KR970023199A/en
Application granted granted Critical
Publication of KR100197593B1 publication Critical patent/KR100197593B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 광자기디스크장치에 관한 것으로, 특히 외주(MO)영역에서 재생중 내주(PIT)영역으로 이동되었을때, 이를 판단하는 방법 및 장치에 관한 것이다. 본 발명은 제어부의 소정 메모리에 기준이 되는 영역판단레벨 값을 기저장하여 정상재생도중 시스템에러등과 같은 상황에 의해서 픽업이 내주(PIT)영역으로 진입하여 에러를 발생할 경우에 기설정된 영역판단레벨에 따라 외주(MO)영역으로 다시 진입하도록하여 정확성과 서치속도를 높이는 잇점을 제공한다. 또한, 시스템에러로 인한 불필요한 동작의 감소로 휴대용 기기에서의 배터리 소모를 줄일 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical disk device, and more particularly, to a method and apparatus for determining the same when moving from an outer (MO) area to an inner (PIT) area during playback. According to the present invention, a predetermined area judgment level is stored when a pickup enters a PIT area due to a situation such as a system error during normal playback and an error occurs. By reentering the outer periphery (MO) area, it provides the advantage of increasing accuracy and search speed. In addition, it is possible to reduce battery consumption in portable devices by reducing unnecessary operations due to system errors.

Description

광자기디스크장치의 위치에러제어장치 및 방법Position error control device and method of magneto-optical disk device

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

제3도는 본 발명의 바람직한 일 실시예에 따른 광자기디스크시스템의 위치에러제어장치를 설명하기 위한 구성도,3 is a configuration diagram for explaining a position error control apparatus of a magneto-optical disk system according to an embodiment of the present invention;

제4도는 제어부(17)의 소정 메모리에 기저장된 A/D변환레벨데이타를 설명하기 위한 개념도,4 is a conceptual diagram for explaining A / D conversion level data previously stored in a predetermined memory of the controller 17;

제5도는 MO영역 및 PIT영역에 대한 RFO신호의 출력파형도.5 is an output waveform diagram of an RFO signal for an MO region and a PIT region.

Claims (4)

서로 다른 재생영역이 공존하는 광디스크의 제1영역에 기록된 신호를 재생하는 방법에 있어서, 상기 광디스크의 제1영역에 기록된 신호를 픽업하는 픽업단계; 상기 픽업된 신호의 전압레벨에 따라 상기 픽업된 신호가 제1영역에 기록된 신호인지 판단하는 영역판단단계; 상기 영역판단단계에서 판단된 결과에 따라 상기 픽업된 신호가 제1영역에 기록된 신호가 아닐 경우에만 상기 제1영역으로 픽업수단을 이동하는 픽업이동단계를 포함하는 광자기디스크장치의 위치에러제어방법.A method of reproducing a signal recorded in a first area of an optical disc in which different reproduction areas coexist, comprising: a pickup step of picking up a signal recorded in a first area of the optical disc; An area determining step of determining whether the picked-up signal is a signal recorded in a first area according to the voltage level of the picked-up signal; Position error control of the magneto-optical disk device comprising a pickup moving step of moving the pickup means to the first area only when the picked-up signal is not a signal recorded in the first area according to the result determined in the area determining step. Way. 제1항에 있어서, 상기 픽업신호가 검출되지 않으면 재포커싱을하여 상기 제1영역으로 픽업수단을 이동하여 재생하는 단계를 더 포함하는 것을 특징으로 하는 광자기디스크장치의 위치에러제어방법.2. The method of claim 1, further comprising refocusing the moving means and reproducing the pickup means when the pickup signal is not detected. 제1항에 있어서, 상기 영역판단단계는 상기 픽업된 신호의 전압레벨을 A/D변환한 디지탈값과 기저장된 레벨데이타값을 비교하여 재생영역을 판단하는 것을 특징으로 하는 광자기디스크장치의 위치에러제어방법.2. The position of the magneto-optical disk device according to claim 1, wherein the area determining step determines a reproduction area by comparing a digital value obtained by A / D conversion of the voltage level of the picked-up signal with a previously stored level data value. Error control method. 두가지의 서로 다른 재생영역이 공존하는 광디스크의 제1영역에 기록된 신호를 재생하는 장치에 있어서, 상기 광디스크의 제1영역에 기록된 신호를 픽업하여 증폭하는 픽업수단; 상기 픽업수단으로부터 인가되는 픽업 신호를 디지탈로 변환하여 출력하는 A/D변환수단; 기준이 되는 레벨데이타를 기저장하고 있으며, 기저장된 레벨데이타를 이용하여 상기 A/D변환수단으로부터 인가되는 상기 픽업신호의 레벨에 따라 재생영역을 결정하고, 상기 픽업수단이 제2영역에 존재하면, 상기 제1영역으로 픽업수단을 이동하기 위한 제어신호를 출력하는 제어부; 상기 제어부의 제어하에 상기 픽업수단을 해당 재생영역으로 이동시키는 서보부를 포함하는 광자기디스크장치의 위치에러제어장치.An apparatus for reproducing a signal recorded in a first area of an optical disc, wherein two different reproduction areas coexist, comprising: pickup means for picking up and amplifying a signal recorded in the first area of the optical disc; A / D conversion means for converting the pickup signal applied from the pickup means to digital; If the level data as a reference is stored in advance, the reproduction area is determined according to the level of the pickup signal applied from the A / D conversion means by using the stored level data, and if the pickup means exists in the second area. A control unit for outputting a control signal for moving the pickup means to the first area; And a servo unit for moving the pickup means to a corresponding reproduction area under the control of the control unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950036147A 1995-10-19 1995-10-19 Device and method for position error control in magneto optic disc equipment KR100197593B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950036147A KR100197593B1 (en) 1995-10-19 1995-10-19 Device and method for position error control in magneto optic disc equipment

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Application Number Priority Date Filing Date Title
KR1019950036147A KR100197593B1 (en) 1995-10-19 1995-10-19 Device and method for position error control in magneto optic disc equipment

Publications (2)

Publication Number Publication Date
KR970023199A true KR970023199A (en) 1997-05-30
KR100197593B1 KR100197593B1 (en) 1999-06-15

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KR1019950036147A KR100197593B1 (en) 1995-10-19 1995-10-19 Device and method for position error control in magneto optic disc equipment

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