KR970060051A - Positive / Negative Error Detection Device and Error Correction Device in Playback of Digital Medium - Google Patents
Positive / Negative Error Detection Device and Error Correction Device in Playback of Digital Medium Download PDFInfo
- Publication number
- KR970060051A KR970060051A KR1019960000308A KR19960000308A KR970060051A KR 970060051 A KR970060051 A KR 970060051A KR 1019960000308 A KR1019960000308 A KR 1019960000308A KR 19960000308 A KR19960000308 A KR 19960000308A KR 970060051 A KR970060051 A KR 970060051A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- error
- detecting
- error detection
- reproduction
- Prior art date
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Classifications
-
- 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
- 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
Abstract
본 발명은 광디스크를 이용하여 디지탈 정보를 기록하고 재생하는 장치의 재생계에 관한 것으로서, 재생신호를 소정의 시간동안 지연시키는 지연 수단, 재생 신호로부터 포지티브 에러를 검출하는 포지티브 에러검출부, 재생 신호로부터 네가티브 에러를 검출하는 네가티브 에러 검출부, 포지티브 에러 검출부에서 에러 검출 신호 발생시에 포지티브 에러 검출 신호를 입력받아 제1기준전압인 스레쉬홀드 전압을 상승시키고, 네가티브 에러 검출 장치에서 에러 검출 신호 발생시에 네가티브 에러 검출 신호를 입력받아 제1기준전압인 스레쉬홀드 전압을 하강시키는 제어 신호를 발생시키는 에러 정정 제어부 및 에러 정정 제어부의 제어 신호에 따라서, 입력되는 지연부의 출력에서 디지탈 신호를 제1기준전압인 스레쉬홀드 전압에 의해 검출하는 검출부를 포함하여 재생 신호의 왜곡에 의해 발생되는 다지탈 신호 검출시의 에러 발생을 사전에 방지시켜 주는 것을 특징으로 한다.The present invention relates to a reproducing system for an apparatus for recording and reproducing digital information using an optical disc, the apparatus comprising: delay means for delaying a reproduction signal for a predetermined period of time; a positive error detection section for detecting a positive error from the reproduction signal; A positive error detection unit for receiving a positive error detection signal when an error detection signal is generated in the positive error detection unit, for raising a threshold voltage, which is a first reference voltage; and a negative error detection And an error correction control unit for generating a control signal for lowering a threshold voltage, which is a first reference voltage, by receiving a signal and a control signal of an error correction control unit, Detection detected by the hold voltage And it is characterized in that that to prevent the error occurrence at the time of de-Dodge detection signal generated by the distortion of the playback signal prior to include.
본 발명에 의하면 디지탈 신호의 재생시에 광학계 및 디스크 특성등으로 인한 디지탈 재생 신호의 왜곡에 의해 디지탈 신호 검출시 에러가 발생하는 경우에 이를 포지티브 에러와 네가티브 에러로 분리시켜 검출함으로써, 사용자가 재생시 에러가 발생하였음을 알 수 있을 뿐만 아니라, 위의 검출 신호를 이용하여 발생한 에러를 정정할 수 있게 할 수 있는 효과가 있다.According to the present invention, when an error occurs in detecting a digital signal due to distortion of a digital reproduction signal due to an optical system and disc characteristics at the time of reproducing a digital signal, the digital signal is separated into a positive error and a negative error, And it is also possible to correct an error generated by using the above detection signal.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제3도는 본 발명에 의한 디지탈 매체의 재생시 에러 보정 장치.FIG. 3 is an apparatus for correcting an error during reproduction of a digital medium according to the present invention. FIG.
제4도는 본 발명에 의한 포지티부 에러(POSITIVE ERROR) 검출 장치.FIG. 4 is a perspective view of a POSITIVE ERROR detecting apparatus according to the present invention; FIG.
제5도는 본 발명에 의한 네가티부 에러(NEGATIVE ERROR) 검 출장치.FIG. 5 is a NEGATIVE ERROR detecting apparatus according to the present invention. FIG.
제6a~6i도는 본 발명에 의한 포지티브 에러 발생시의 신호 검출 파형도.6A to 6I are diagrams showing signal detection waveforms when a positive error occurs according to the present invention.
제7a~7j도는 본 발명에 의한 네거티브 에러 발생식의 신호 검출 파형도.7A to 7J are diagrams of signal detection waveforms of the negative error generating equation according to the present invention.
제8도는 본 발명의 구성도에서의 2비트 카운터의 진리치 표.FIG. 8 is a truth table of a 2-bit counter in the configuration of the present invention; FIG.
제9도는 제4,5도의 피크 검출부의 일실시예.FIG. 9 is an embodiment of the peak detector of FIGS.
제10a~10b도는 제10도의 피크 검출부의 각부의 파형.Figs. 10a to 10b show the waveforms of the respective portions of the peak detecting portion in Fig. 10; Fig.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960000308A KR100189897B1 (en) | 1996-01-09 | 1996-01-09 | Positive/negative error detection device and error correction device for reproducing digital media |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960000308A KR100189897B1 (en) | 1996-01-09 | 1996-01-09 | Positive/negative error detection device and error correction device for reproducing digital media |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970060051A true KR970060051A (en) | 1997-08-12 |
KR100189897B1 KR100189897B1 (en) | 1999-06-01 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019960000308A KR100189897B1 (en) | 1996-01-09 | 1996-01-09 | Positive/negative error detection device and error correction device for reproducing digital media |
Country Status (1)
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KR (1) | KR100189897B1 (en) |
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1996
- 1996-01-09 KR KR1019960000308A patent/KR100189897B1/en not_active IP Right Cessation
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KR100189897B1 (en) | 1999-06-01 |
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