KR950004137A - Automatic gain control device of tracking error signal and its method - Google Patents
Automatic gain control device of tracking error signal and its method Download PDFInfo
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- KR950004137A KR950004137A KR1019930015009A KR930015009A KR950004137A KR 950004137 A KR950004137 A KR 950004137A KR 1019930015009 A KR1019930015009 A KR 1019930015009A KR 930015009 A KR930015009 A KR 930015009A KR 950004137 A KR950004137 A KR 950004137A
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- signal
- tracking error
- error signal
- tracking
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Abstract
본 발명은 광자기 디스크 드라이브(MODD)에 있어서 트래킹 에러신호의 자동이득조절장치 및 그 방법이 개시되어 있다.The present invention discloses an automatic gain control device for tracking error signals in a magneto-optical disk drive (MODD) and a method thereof.
본 발명의 장치는 광디스크로부터 반사되어 오는 광신호를 2채널로 픽업하는 2분할 포토다이오드, 2분할 포토다이오드로부터 2채널로 전송되는 픽업된 신호의 차신호를 검출하는 푸쉬-풀 발생회로, 2분할 포토다이오드로부터 2채널로 전송되는 신호의 합신호를 구하는 트랙 크로스 신호발생회로, 스펙이 다른 디스크의 특성에 적응하기 위하여 트래킹 에러신호의 이득을 조절할 수 있는 분주제어신호를 출력하는 마이크로프로세서, 푸쉬-풀 신호에 대해 트랙 크로스 신호와 분주제어신호의 합으로 분주하여 일정한 이득을 갖는 트래킹 에러신호를 출력하는 분주기, 분주기로부터 출력되는 트래킹 에러신호에 따라 트래킹을 보상하는 트래킹 보상기를 포함하여 레이저 빔의 스폿을 트랙의 중심에서 벗어나지 않도록 제어함으로써 디스크에서 데이타를 기록/재생시 에러율을 줄일 수 있는 효과가 있다.The apparatus of the present invention is a two-part photodiode for picking up an optical signal reflected from an optical disk in two channels, a push-pull generating circuit for detecting a difference signal of a picked-up signal transmitted in two channels from a two-part photodiode, and a two-part A track cross signal generation circuit that obtains the sum signal of the signals transmitted from the photodiode to two channels, a microprocessor that outputs a division control signal that can adjust the gain of the tracking error signal to adapt to the characteristics of the disc having different specifications, and push- The laser beam includes a divider for dividing a full signal into a sum of a track cross signal and a division control signal to output a tracking error signal having a constant gain, and a tracking compensator for compensating tracking according to the tracking error signal output from the divider. Control the spot of the track so that it does not deviate from the center of the track. City Rock / Play has the effect of reducing the error rate.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래의 트래킹 에러신호의 자동이득조절장치의 블럭도, 제2도는 제1도에 도시된 푸쉬-풀 발생회로의 출력파형도, 제3도는 종래의 다른 트래킹 에러신호의 자동이득조절장치의 블럭도, 제4도는 본 발명에 의한 트래킹 에러신호의 자동이득조절장치의 일실시예에 따른 블럭도.1 is a block diagram of a conventional automatic gain control device for tracking error signals, FIG. 2 is an output waveform diagram of a push-pull generating circuit shown in FIG. 1, and FIG. 3 is a conventional automatic gain control device for other tracking error signals. Figure 4 is a block diagram according to an embodiment of the automatic gain control device of the tracking error signal according to the present invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930015009A KR100280053B1 (en) | 1993-07-31 | 1993-07-31 | Automatic gain control device of tracking error signal and its method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930015009A KR100280053B1 (en) | 1993-07-31 | 1993-07-31 | Automatic gain control device of tracking error signal and its method |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950004137A true KR950004137A (en) | 1995-02-17 |
KR100280053B1 KR100280053B1 (en) | 2001-03-02 |
Family
ID=66817204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019930015009A KR100280053B1 (en) | 1993-07-31 | 1993-07-31 | Automatic gain control device of tracking error signal and its method |
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KR (1) | KR100280053B1 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58125241A (en) * | 1982-01-20 | 1983-07-26 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
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1993
- 1993-07-31 KR KR1019930015009A patent/KR100280053B1/en not_active IP Right Cessation
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KR100280053B1 (en) | 2001-03-02 |
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