KR950006817A - Data playback device - Google Patents

Data playback device Download PDF

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Publication number
KR950006817A
KR950006817A KR1019930015903A KR930015903A KR950006817A KR 950006817 A KR950006817 A KR 950006817A KR 1019930015903 A KR1019930015903 A KR 1019930015903A KR 930015903 A KR930015903 A KR 930015903A KR 950006817 A KR950006817 A KR 950006817A
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South Korea
Prior art keywords
inverted
inputting
amplifier
signal generated
comparator
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KR1019930015903A
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Korean (ko)
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KR0165276B1 (en
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김병수
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김광호
삼성전자 주식회사
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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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

디지탈 비데오테이프 레코더의 픽업장치를 통하여 발생된 재생신호로부터 디지탈데이타를 재생하는 데이타재생장치가 개시된다.A data reproducing apparatus for reproducing digital data from a reproducing signal generated through a pickup device of a digital video tape recorder is disclosed.

본 발명에 따른 데이타재생장치는 변조신호를 입력하는 미분기; 미분기에서 발생된 미분된 재생신호를 입력하는 반전/비반전증폭기; 반전/비반전증폭기에서 발생된 반전증폭된 신호와 비반전증폭된 신호를 입력하는 비교기; 비교기의 비교출력을 입력하는 래치; 및 변조신호를 입력하고, 그의 피크구간에서 래치를 활성화하는 게이트 신호를 발생하는 게이트펄스 발생부를 포함함을 특징으로 한다.A data reproducing apparatus according to the present invention comprises: a differentiator for inputting a modulated signal; An inverting / non-inverting amplifier for inputting a differential reproduction signal generated in the differentiator; A comparator for inputting an inverted and non-inverted signal generated by the inverted / non-inverted amplifier; A latch for inputting a comparison output of the comparator; And a gate pulse generator for inputting a modulation signal and generating a gate signal for activating the latch in its peak section.

본 발명에 따른 데이타재생장치는 미분된 재생신호를 반전/비반전증폭하고, 반전증폭된 신호와 비반전증폭된 신호를 비교함에 의해 데이타를 재생함으로써 재생신호의 레벨변동에 영향되지 않고 데이타를 정확히 재생할 수 있는 효과를 갖는다.The data reproducing apparatus according to the present invention inverts / non-inverts amplified derivative signals and reproduces the data by comparing the inverted-amplified signals with the non-inverted amplified signals, thereby accurately correcting the data without being affected by the level fluctuation of the reproduced signals. It has an effect that can be played back.

Description

데이타재생장치Data playback device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명에 의한 데이타재생장치의 일실시예를 보이는 블럭도이다.3 is a block diagram showing an embodiment of a data reproducing apparatus according to the present invention.

제4도는 제3도의 동작을 보이는 파형도이다.4 is a waveform diagram showing the operation of FIG.

제5도는 본 발명에 의한 데이타재생장치의 다른 실시예를 보이는 블럭도이다.5 is a block diagram showing another embodiment of the data reproducing apparatus according to the present invention.

제6도는 제5도에 도시된 장치의 동작을 보이는 타이밍도이다.6 is a timing diagram showing the operation of the apparatus shown in FIG.

Claims (6)

디지탈데이타의 기립/하강엣지마다 피크치를 갖도록 형성된 변조신호로부터 상기 디지탈데이타를 재생하는 장치에 있어서, 상기 변조신호를 입력하는 미분기; 상기 미분기에서 발생된 미분된 재생신호를 입력하는 반전/비반전증폭기; 상기 반전/비반전증폭기에서 발생된 반전증폭된 신호와 비반전증폭된 신호를 입력하는 비교기; 상기 비교기의 비교출력을 입력하는 래치; 및 상기 변조신호를 입력하고, 그의 피크구간에서 상기래치를 활성화하는 게이트신호를 발생하는 수단을 포함하는 데이타재생장치.An apparatus for reproducing the digital data from a modulated signal formed to have a peak value at each standing / falling edge of the digital data, the apparatus comprising: a differentiator for inputting the modulated signal; An inverting / non-inverting amplifier for inputting the differentiated reproduction signal generated in the differentiator; A comparator for inputting an inverted and non-inverted signal generated by the inverted / non-inverted amplifier; A latch for inputting a comparison output of the comparator; And means for inputting the modulated signal and generating a gate signal for activating the latch in its peak section. 제1항에 있어서, 상기 게이트펄스 발생수단은 상기 변조신호를 입력하는 반전/비반전증폭기; 상기 반전/비반전증폭기에서 검출된 비반전증폭된 변조신호를 입력하는 제1반파정류기; 상기 제1반파정류기에서 발생된 정의 맥류를 입력하는 제1저역여파기; 상기 반전/비반전증폭기에서 발생된 비반전증폭된 변조신호와 상기 제1저역여파기에서 발생된 저역여파된 신호를 입력하는 제1비교기; 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호를 입력하는 제2반파정류기; 상기 제2반파정류기에서 검출된 부의 맥류를 입력하는 제2저역여파기; 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호와 상기 제2저역여파기에서 발생된 저역여파된 신호를 입력하는 제2비교기; 및 상기 제1비교기와 제2비교기에서 발생된 비교출력을 입력하고, 그의 출력을 상기 래치의 래치신호로 제공하는 오아게이트를 구비함을 특징으로 하는 데이타재생장치.2. The apparatus of claim 1, wherein the gate pulse generating means comprises: an inverting / non-inverting amplifier for inputting the modulation signal; A first half-wave rectifier for inputting a non-inverted amplified modulated signal detected by the inverted / non-inverted amplifier; A first low-pass filter for inputting a positive pulse wave generated in the first half-wave rectifier; A first comparator configured to input a non-inverted amplified signal generated by the inverted / non-inverted amplifier and a low-pass filtered signal generated by the first low pass filter; A second half-wave rectifier for inputting an inverted-amplified modulated signal generated by the inverted / non-inverted amplifier; A second low pass filter for inputting negative pulses detected by the second half-wave rectifier; A second comparator for inputting an inverted modulated signal generated by the inverted / non-inverted amplifier and a low pass filtered signal generated by the second low pass filter; And an orifice for inputting a comparison output generated by the first comparator and the second comparator and providing the output as a latch signal of the latch. 제2항에 있어서, 상기 게이트펄스 발생수단은 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호와 비반전증폭된 변조신호를 각각 소정의 시간만큼 지연하는 제1지연기와 제2지연기를 더 구비함을 특징으로 하는 데이타재생장치.3. The gate delay generator of claim 2, wherein the gate pulse generator further comprises a first delay unit and a second delay unit delaying the inverted and non-inverted modulated signals generated by the inverted / non-inverted amplifier by a predetermined time, respectively. A data reproducing apparatus, characterized in that provided. 디지탈데이타의 기립/하강엣지마다 피크치를 갖도록 형성된 변조신호로부터 상기 디지탈데이타를 재생하는 장치에 있어서, 상기 변조신호를 입력하는 미분기; 상기 미분기에서 발생된 미분된 재생신호를 입력하는 제로크로싱검출기; 상기 제로크로싱검출기에서 검출된 제로크로싱펄스를 입력하는 래치; 및 상기 변조신호를 입력하고, 그의 피크구간에서 상기 래치를 활성화하는 게이트신호를 발생하는 수단을 포함하는 데이타재생장치.An apparatus for reproducing the digital data from a modulated signal formed to have a peak value at each standing / falling edge of the digital data, the apparatus comprising: a differentiator for inputting the modulated signal; A zero crossing detector for inputting the differentiated reproduction signal generated in the differentiator; A latch for inputting a zero crossing pulse detected by the zero crossing detector; And means for inputting the modulation signal and generating a gate signal for activating the latch in its peak section. 제4항에 있어서, 상기 게이트펄스 발생수단은 상기 변조신호를 입력하는 반전/비 증폭기; 상기 반전/비반전증폭기에서 검출된 비반전증폭된 변조신호를 입력하는 제1반파정류기; 상기 제1반 류기에서 발생된 정의 맥류를 입력하는 제1저역여파기; 상기 반전/비반전증폭기에서 발생된 비반전증폭된 변조신호와 상기 제1저역여파기에서 발생된 저역여파된 신호를 입력하는 제1비교기; 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호를 입력하는 제2반파정류기; 상기 제2반파정류기에서 검출된 부의 맥류를 입력하는 제2저역여파기; 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호와 상기 제2저역여파기에서 발생된 저역여파된 신호를 입력하는 제2비교기; 및 상기 제1비교기와 제2비교기에서 발생된 비교출력을 입력하고, 그의 출력을 상기 래치의 래치신호로 제공하는 오아게이트를 구비함을 특징으로 하는 데이타재생장치.5. The apparatus of claim 4, wherein the gate pulse generating means comprises: an inverting / non amplifier for inputting the modulation signal; A first half-wave rectifier for inputting a non-inverted amplified modulated signal detected by the inverted / non-inverted amplifier; A first low pass filter for inputting a positive pulse generated in the first half current transformer; A first comparator configured to input a non-inverted amplified signal generated by the inverted / non-inverted amplifier and a low-pass filtered signal generated by the first low pass filter; A second half-wave rectifier for inputting an inverted-amplified modulated signal generated by the inverted / non-inverted amplifier; A second low pass filter for inputting negative pulses detected by the second half-wave rectifier; A second comparator for inputting an inverted modulated signal generated by the inverted / non-inverted amplifier and a low pass filtered signal generated by the second low pass filter; And an orifice for inputting a comparison output generated by the first comparator and the second comparator and providing the output as a latch signal of the latch. 제5항에 있어서, 상기 게이트펄스 발생수단은 상기 반전/비반전증폭기에서 발생된 반전증폭된 변조신호와 비반전증포된 변조신호를 각각 소정의 시간만큼 지연하는 제1지연기와 제2지연기를 더 구비함을 특징으로 하는 데이타재생장치.The method of claim 5, wherein the gate pulse generating means further comprises a first delay and a second delay delaying the inverted-amplified and non-inverted modulated signal generated by the inverted / non-inverted amplifier by a predetermined time, respectively. A data reproducing apparatus, characterized in that provided. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930015903A 1993-08-17 1993-08-17 Equipment for data reproduction KR0165276B1 (en)

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KR1019930015903A KR0165276B1 (en) 1993-08-17 1993-08-17 Equipment for data reproduction

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Application Number Priority Date Filing Date Title
KR1019930015903A KR0165276B1 (en) 1993-08-17 1993-08-17 Equipment for data reproduction

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KR950006817A true KR950006817A (en) 1995-03-21
KR0165276B1 KR0165276B1 (en) 1999-03-20

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