KR940012345A

KR940012345A - Digital record data playback device

Info

Publication number: KR940012345A
Application number: KR1019920022407A
Authority: KR
Inventors: 김병수
Original assignee: 윤종용; 삼성전자 주식회사
Priority date: 1992-11-26
Filing date: 1992-11-26
Publication date: 1994-06-23

Abstract

이진정보를 기록한 기록매체를 독출하여 형성되는 픽업신호로부터 원래의 이진정보를 재생하는 디지탈 기록데이타 재생장치가 개시된다.Disclosed is a digital recording data reproducing apparatus for reproducing original binary information from a pickup signal formed by reading a recording medium recording binary information.

본 발명에 의한 장치는 픽업장치로부터의 재생신호를 입력하여 그의 미분된 파형을 출력하는 미분기와; 미분기에서의 미분된 파형을 입력하여 그의 위상이 반전된 신호를 출력하는 위상반전기와; 그리고 미분된 파형과 위상 반전된 파형을 입력하여 두 파형의 전압치의 대소를 판단한 비교기를 포함함을 특징으로 한다.The apparatus according to the present invention comprises: a differentiator for inputting a reproduction signal from a pickup device and outputting a differentiated waveform thereof; A phase inverter for inputting the differential waveform in the differentiator and outputting a signal whose phase is inverted; And inputting the differential waveform and the phase inverted waveform to determine the magnitude of the voltage values of the two waveforms.

본 발명에 의한 디지탈 기록데이타 재생장치는 재생신호의 변곡점 혹은 지연된 신호와의 교차점에 의하여 원래의 디지탈 신호를 재생하게 함으로써 재생신호의 레벨변동에 상관없이 충실한 재생을 달성할 수 있는 장점을 갖는다.The digital recording data reproducing apparatus according to the present invention has the advantage that faithful reproduction can be achieved regardless of the level fluctuation of the reproduction signal by allowing the original digital signal to be reproduced by the inflection point of the reproduction signal or the intersection with the delayed signal.

Description

Digital record data playback device

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

제5도는 본 발명의 일실시예를 보이는 도면이다.5 is a view showing an embodiment of the present invention.

제6도는 제5도의 각부파형을 보이는 파형도이다.FIG. 6 is a waveform diagram showing angle waveforms of FIG.

제7도는 본발명의 다른 실시예를 보이는 도면이다.7 is a view showing another embodiment of the present invention.

Claims

An apparatus for reproducing digital information recorded on a recording medium, comprising: a differentiator (51) for inputting a reproduction signal from a pickup device and outputting a differentiated waveform thereof; A phase inverter (53) for inputting the differential waveform in the differentiator and outputting a signal whose phase is inverted; And a comparator (56) for inputting the differentiated waveform and the phase inverted waveform to determine the magnitude of the voltage values of the two waveforms.

The operational amplifier of claim 1, wherein the comparator 56 inputs the differentiated waveform to its non-inverting input terminal and inputs the phase-inverted signal to its inverting input terminal to determine the magnitude of voltage values of two waveforms. 54); And a second phase inverter (55) for inverting the phase of the signal output from the operational amplifier.

An apparatus for reproducing digital information recorded on a recording medium, comprising: a delay unit (71) for inputting a reproduction signal from a pickup device and outputting a time delayed signal thereof; And a comparator (74) for inputting the reproduction signal and the delayed signal to determine the magnitude of the voltage difference between the two waveforms.

4. The operational amplifier 72 according to claim 3, wherein the comparator 74 inputs the reproduction signal to its non-inverting input terminal and inputs the delayed signal to its inverting input terminal to determine the magnitude of the voltage values of the two waveforms. ; And a phase inverter (73) for inverting the phase of the signal output from the operational amplifier.

4. The apparatus according to claim 3, wherein the delay characteristic T of the delay unit (71) has a relationship of T < T _B with respect to the bit period (T _B ) of the digitally coded information.

※ Note: The disclosure is based on the initial application.