KR0162324B1 - Delay time compensation device of pal plus vcr - Google Patents

Delay time compensation device of pal plus vcr Download PDF

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Publication number
KR0162324B1
KR0162324B1 KR1019950000571A KR19950000571A KR0162324B1 KR 0162324 B1 KR0162324 B1 KR 0162324B1 KR 1019950000571 A KR1019950000571 A KR 1019950000571A KR 19950000571 A KR19950000571 A KR 19950000571A KR 0162324 B1 KR0162324 B1 KR 0162324B1
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South Korea
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signal
helper
luminance
output
color
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KR1019950000571A
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Korean (ko)
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KR960030208A (en
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장창근
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구자홍
엘지전자주식회사
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Priority to KR1019950000571A priority Critical patent/KR0162324B1/en
Priority to EP96400082A priority patent/EP0722254A3/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/89—Time-base error compensation
    • 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
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H04N11/167—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/825—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the luminance and chrominance signals being recorded in separate channels

Abstract

본 발명은 브이씨알에서 헬퍼신호의 시간보상 기술에 관한 것으로, 일반적인 브이씨알에 있어서는 PAL+신호인 헬퍼신호를 녹화하거나 재생할 때 지연시간을 고려하지 않아 다른 브이씨알에서 재생하거나 녹화할 때 신호가 불일치되어 호환성이 결여되는 문제점이 있었는 바, 본 발명은 이를 해결하기 위하여 녹화시 헬퍼신호를 색부반송파로 복조하여 휘도신호 경로에 기록하고, 헬퍼신호가 아닌 메인 휘도신호 및 색신호는 PAL 방식의 회로를 경유하여 기록하며, 재생시 그 헬퍼신호를 검출하여 휘도신호 영역에 출력하는 과정에서 휘도신호와 색신호의 출력 타이밍을 보상해 주도록 한 것이다.The present invention relates to a time compensation technique of a helper signal in a VC. In general, a delay is not considered when recording or playing a helper signal, which is a PAL + signal, in the case of a VC. In order to solve the problem, the present invention demodulates a helper signal as a color carrier to record the luminance signal path in the luminance signal path, and the main luminance signal and the color signal, not the helper signal, pass through a PAL circuit. In the process of detecting and outputting the helper signal to the luminance signal region during reproduction, the timing of outputting the luminance signal and the color signal is compensated for.

Description

팔플러스 브이씨알의 지연시간 보상장치PALPLUS V's delay compensation device

제1도는 본 발명의 녹화모드에서 휘도신호와 색신호의 시간보상 블록도.1 is a time compensation block diagram of a luminance signal and a color signal in a recording mode of the present invention.

제2도는 본 발명의 재생모드에서 휘도신호와 색신호의 시간보상 블록도.2 is a time compensation block diagram of a luminance signal and a color signal in a reproduction mode of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

101 : 대역필터1 102,206 : 복조기101: band filter 1 102,206: demodulator

103 : 저역필터1 104,202 : 휘도/색신호콤필터103: low pass filter 1 104,202: luminance / color signal comb filter

105 : 저역필터2 106,203 : 지연기1105: low pass filter 2 106,203: delay unit 1

107,204,209 : 스위치 108 : FM복조기107,204,209: Switch 108: FM demodulator

111 : 혼합기 112,201 : 헤드111: mixer 112,201: head

205 : 저역필터 207 : 나이퀴스트필터205: low pass filter 207: Nyquist filter

208 : 지연기2208: Delay 2

본 발명은 브이씨알에서 헬퍼신호의 시간보상 기술에 관한 것으로, 특히 녹화시 헬퍼신호를 색부반송파로 복조하여 휘도신호 경로에 기록하고, 헬퍼신호가 아닌 메인 휘도신호 및 색신호는 PAL 방식의 회로를 경유하여 기록하며, 재생시 그 헬퍼신호를 검출하여 휘도신호 영역에 출력하는 과정에서 휘도신호와 색신호의 출력 타이밍이 일치되지 않는 것을 감안하여 지연된 시간을 보상해주는데 적당하도록한 팔플러스(PAL+) 브이씨알의 지연시간 보상장치에 관한 것이다.The present invention relates to a time compensation technique of a helper signal in a VC. In particular, during recording, the helper signal is demodulated by a color carrier and recorded in the luminance signal path. PAL + VAL to detect the helper signal during playback and output it to the luminance signal area in order to compensate for the delayed time considering that the output timing of the luminance signal and the color signal do not match. It relates to a delay time compensation device of.

일반적인 PAL+브이씨알에 있어서는 PAL+신호일 헬퍼신호(Helper signal)를 녹화하거나 재생할 때 지연시간을 고려하지 않아 다른 브이씨알에서 재생하거나 녹화할 때 신호가 불일치되어 호환성이 결여되는 문제점이 있었다.In general PAL + V-CAL, there is a problem in that the PAL + signal does not consider a delay time when recording or playing a helper signal, and thus the signal is inconsistent when playing or recording in another VC.

따라서, 본 발명의 목적은 헬퍼신호의 기록/재생시 메인휘도신호 및 색신호의 지연시간을 보상하는 팔플러스 브이씨알의 지연시간 보상장치를 제공함에 있다.Accordingly, an object of the present invention is to provide an apparatus for compensating for a delay time of a Palm Plus V-CAL to compensate the delay time of the main luminance signal and the color signal during the recording / reproducing of the helper signal.

상기의 목적을 달성하기 위한 팔플러스 브이씨알의 지연시간 보상장치 중에서 복합영상신호를 처리하여 기록할 때 적용되는 보상장치는 팔플러스 처리된 복합영상신호(CVBS)에서 휘도신호와 색신호를 분리하는 휘도/색신호 분리부와, 상기 분리된 색신호에서 헬퍼신호와 색신호를 분리하는 헬퍼신호 분리부와, 상기 분리된 헬퍼신호와 휘도신호를 각기 처리하는 헬퍼신호 처리부 및 휘도신호 처리부와, 상기 휘도신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연출력되는 휘도신호 지연보상부와, 상기 휘도신호 지연보상부의 출력과 헬퍼신호 처리부의 출력을 합하는 제1합산부와, 헬퍼신호가 제거된 색신호를 처리하는 색신호 처리부와, 상기 색신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연시키는 색신호 지연보상부와, 상기 색신호 지연보상부의 출력신호를 상기 제1합산부의 출력신호에 합하는 제2합산부와, 상기 제2합산부의 출력신호를 기록매체에 기록하는 기록부로 구성하였다.A compensation device applied to process and record a composite video signal among the PAL Plus V delay delay compensation devices for achieving the above object is a luminance that separates the luminance signal and the color signal from the Palm Plus processed video signal (CVBS). And a color signal separation unit, a helper signal separation unit for separating the helper signal and the color signal from the separated color signal, a helper signal processing unit and a luminance signal processing unit for processing the separated helper signal and the luminance signal, respectively, and the luminance signal processing unit A luminance signal delay compensation unit for delaying an output signal by a delay time according to the helper signal processing, a first summing unit for adding the output of the luminance signal delay compensation unit and the output of the helper signal processing unit, and a color signal from which the helper signal is removed; A color signal processing unit for processing and delaying an output signal of the color signal processing unit by a delay time according to the helper signal processing Formed the signal delay compensation unit, and an output signal the color signal delay compensation section to the second summing unit is joined to the first summing unit output signal, the recording section for recording an output signal of said second summer to the recording medium.

또한, 상기의 목적을 달성하기 위한 팔플러스 브이씨알의 지연시간 보상장치 중에서 재생영상신호를 처리하열 복합영상신호로 출력할 때 적용되는 보상장치는 기록매체로부터 재생출력되는 영상신호에서 휘도신호와 색신호를 분리하는 휘도/색신호 분리부와, 상기 분리된 휘도신호에서 헬퍼신호와 휘도신호를 분리하는 헬퍼신호 분리부와, 상기 분리된 헬퍼신호와 색신호를 각기 처리하는 헬퍼신호 처리부 및 색신호 처리부와, 상기 색신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연출력하는 색신호 지연보상부와, 상기 색신호 지연보상부의 출력과 헬퍼신호 처리부의 출력을 합하는 제1합산부와, 헬퍼신호가 제거된 휘도신호를 처리하는 휘도신호 처리부와, 상기 휘도신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연시키는 휘도신호 지연보상부와, 상기 휘도신호 지연보상부의 출력신호를 상기 제1합산부의 출력신호에 합하여 복합영상신호(CVBS)로 출력하는 제2합산부로 구성하였다.In addition, among the PAL Plus V delay compensation devices for achieving the above object, a compensation device applied when outputting a reproduced video signal as a process-integrated composite video signal includes a luminance signal and a color signal in a video signal reproduced and output from a recording medium. A luminance / color signal separation unit for separating a; a helper signal separation unit for separating a helper signal and a luminance signal from the separated luminance signal; a helper signal processing unit and a color signal processing unit for processing the separated helper signal and a color signal, respectively; A color signal delay compensator for delaying and outputting the output signal of the color signal processor by a delay time according to the helper signal processing; a first summing unit for adding the output of the color signal delay compensator and the output of the helper signal processor; A luminance signal processor for processing a signal and an output signal of the luminance signal processor according to the helper signal processing A luminance signal delay compensator for delaying by the delay time and a second adder for outputting the output signal of the luminance signal delay compensator to the output signal of the first adder are output as a composite video signal (CVBS).

제1도는 본 발명의 녹화모드에서 휘도신호와 색신호의 시간보상을 보인 본 발명의 일실시 예시 블록도로서 이에 도시한 바와 같이, 복합영상신호(CVBS)를 대역필터링하여 헬퍼신호를 검출하는 대역필터1(101)과, 상기 대역필터1(101)의 출력신호를 색부반송파(fsc)로 복조처리하는 복조기(102)와, 상기의 복조과정에서 발생된 고주파성분을 제거하는 저역필터1(103)과, 복합영상신호(CVBS)를 콤필터링하여 휘도신호(Y)와 색신호(C)를 분리해내는 휘도/색신호콤필터(104)와, 상기 휘도/색신호콤필터(104)에서 출력되는 휘도신호(Y) 대역 이상에 존재하는 고주파성분을 제거하는 저역필터2(105)와, 상기 대역필터1(101), 저역필터1(103)에 의한 헬퍼신호의 지연시간과 저역필터2(105)를 통해 출력되는 메인휘도신호(Y)의 지연시간을 보상하는 지연기1(106)과, 상기 저역필터1(103)에서 출력되는 헬퍼신호를 상기 지연기1(106)에서 출력되는 메인휘도신호(Y)에 삽입하여 출력하는 스위치(107)와, 상기 스위치(107)의 출력신호를 FM복조처리하여 혼합기(111)의 일측입력으로 제공하는 FM복조기(108)와, 휘도/색신호콤필터(104)에서 분리출력되는 색신호(C)를 대역필터링하는 대역필터2(109)와, 상기 대역필터2(109)에서 출력되는 색신호의 출력 타이밍을 상기 혼합기(111)의 일측입력으로 공급되는 휘도신호의 출력 타이밍과 맞추기 위해 지연시간을 보상하는 지연기2(110)와, 상기 FM복조기(108)에서 출력되는 휘도신호와 상기 지연기2(110)에서 출력되는 색신호를 혼합하여 헤드(112)에 공급하는 혼합기(111)로 구성하였다.FIG. 1 is a block diagram of an exemplary embodiment of the present invention showing time compensation of a luminance signal and a color signal in a recording mode according to the present invention. As shown therein, a band filter for band-filtering a composite video signal CVBS to detect a helper signal 1 (101), a demodulator 102 for demodulating the output signal of the band filter 1 (101) with a color subcarrier (f sc ), and a low pass filter 1 (103) for removing high frequency components generated in the demodulation process. ) And a luminance / color signal comb filter 104 for comb-filtering the composite video signal CVBS to separate the luminance signal Y and the color signal C, and the luminance output from the luminance / color signal comb filter 104. Low pass filter 2 105 for removing high frequency components present in the signal Y band or more, and delay time of the helper signal by the band filter 1 101 and low pass filter 1 103 and the low pass filter 2 105. Delay 1 (106) and the low-pass filter 1 (103) for compensating for the delay time of the main luminance signal (Y) output through the A switch 107 for inserting and outputting a helper signal output from the delay unit 1 (106) into the main luminance signal (Y) and the FM signal for the output signal of the switch 107, and the mixer 111. The FM demodulator 108, which is provided as one side input of the band, and the band filter 2 109 for band filtering the color signal C separately outputted from the luminance / color signal comb filter 104, and the band filter 2 109 outputting the band filter 2 109. A delay unit 2 (110) for compensating for a delay time in order to match the output timing of the color signal to the output timing of the luminance signal supplied to one input of the mixer 111, and the luminance signal output from the FM demodulator 108; It consists of a mixer 111 for mixing the color signal output from the retarder 2 (110) to supply to the head (112).

제2도는 본 발명의 재생모드에서 휘도신호와 색신호의 시간보상을 보인 본 발명의 일실시 예시 블록도로서 이에 도시한 바와 같이 헤드(201)를 통해 재생되는 복합영상신호에서 휘도/색신호 분리하는 휘도/색신호콤필터(202)와, 상기 휘도/색신호콤필터(202)에서 출력되는 휘도신호의 출력타이밍을 색신호출력 타이밍에 동기시키기 위해 지연시간을 보상하는 지연기1(203)과, 상기 지연기1(203)에서 출력되는 휘도신호 중에서 헬퍼구간을 제외시켜 출력하는 스위치(204)와, 상기 휘도/색신호콤필터(202)에서 출력되는 휘도신호를 저역필터링하여 헬퍼신호를 분리해내는 저역필터(205)와, 상기 저역필터(205)에서 출력되는 헬퍼신호를 색부반송파(fSC)로 복조하는 복조기(206)와, 상기 복조기(206)에서 출력되는 헬퍼신호를 나이퀴스트 필터링하여 스위치(209)의 일측입력으로 공급하는 나이퀴스트필터(207)와, 상기 휘도/색신호콤필터(202)에서 출력되는 색신호(C)의 출력타이밍을 상기 스위치(209)의 일측입력으로 공급되는 헬퍼신호의 출력타이밍과 동기시키기 위해 지연시간을 보상하는 지연기2(208)와, 상기 나이퀴스트필터(207)에서 출력되는 헬퍼신호를 상기 지연기2(208)에서 출력되는 색신호영역에 삽입하여 출력하는 스위치(209)로 구성한 것으로, 이와 같이 구성한 본 발명의 작용 및 효과를 상세히 설명하면 다음과 같다.FIG. 2 is a block diagram of an exemplary embodiment of the present invention showing temporal compensation of a luminance signal and a color signal in a reproduction mode according to the present invention. As shown in FIG. And a delay unit 1 (203) for compensating a delay time for synchronizing the output timing of the luminance signal output from the luminance / color signal comb filter 202 with the color signal output timing. A low pass filter for separating the helper signal by low pass filtering the luminance signal output from the luminance / color signal comb filter 202 and the switch 204 for excluding the helper section from the luminance signal output from 1 (203). 205, a demodulator 206 for demodulating the helper signal output from the low pass filter 205 to a color subcarrier f SC , and Nyquist filtering the helper signal output from the demodulator 206 to switch 209. One side of) Output timing of the Nyquist filter 207 to be supplied to the power supply and the color signal C output from the luminance / color signal comb filter 202 to the one-side input of the switch 209; A delayer 2 208 that compensates for the delay time for synchronization, and a switch 209 that inserts and outputs a helper signal output from the Nyquist filter 207 into a color signal region output from the delayer 2 208. In the following description, the operation and effects of the present invention configured as described above are described in detail.

먼저, 제1도를 참조하여 복합영상신호의 기록시 지연시간 보상과정을 설명하면 다음과 같다.First, referring to FIG. 1, a delay time compensation process in recording a composite video signal is described below.

입력되는 복합영상신호(CVBS)에는 헬퍼신호가 삽입되어 있는데, 그 복합영상신호(CVBS)는 대역필터1(101)을 통해 헬퍼신호의 주파수대역이 필터링된 후 복조기(102)에서 색부반송파(fSC: Color Subcarrier)로 복조처리되고, 이렇게 복조처리되어 출력되는 헬퍼신호는 저역필터1(103)을 통해 상기의 복조과정에서 발생된 고주파성분이 제거되어 스위칠(107)의 일측 고정단자(a)에 공급된다.A helper signal is inserted into the input composite video signal CVBS, and the frequency band of the helper signal is filtered through the band filter 1 101, and then the color subcarrier f is demodulated by the demodulator 102. SC : demodulated by Color Subcarrier, and the demodulated helper signal is removed through the low pass filter 1 (103) to remove the high frequency components generated in the demodulation process, so that the fixed terminal (a) of the switch 107 (a) Is supplied.

또한, 상기 복합영상신호(CVBS)는 휘도/색신호콤필터(104)에 공급되어 휘도신호(Y)와 색신호(C)가 분리되고, 그 분리된 휘도신호(Y)가 저역필터2(105)를 통해 휘도신호(Y) 대역 이상에 존재하는 고주파성분이 제거된 후 지연기1(106)을 통해 상기 스위치(107)의 타측 고정단자(b)에 공급되는데, 그 지연기1(106)에서는 상기 헬퍼신호가 대역필터1(101)을 통해 α1시간만큼 지연되고, 저역필터1(103)을 통해 α2만큼 지연되어 스위치(107)에 공급되는 것을 감안하여 그 지연시간(α1+α2)에서 상기 저역필터2(105)에 의한 메인휘도신호(Y)의 지연시간(β)을 감산한 만큼의 지연시간 즉, D = (α1+α2)-β만큼의 지연시간을 갖도록 하였다.In addition, the composite image signal CVBS is supplied to the luminance / color signal comb filter 104 so that the luminance signal Y and the color signal C are separated, and the separated luminance signal Y is converted into the low pass filter 2 105. After the high frequency component existing in the luminance signal (Y) band or more is removed, the delay terminal 1 (106) is supplied to the other fixed terminal (b) of the switch (107). Considering that the helper signal is delayed by α 1 hour through the band filter 1 101 and delayed by α 2 through the low pass filter 1 103 and supplied to the switch 107, the delay time (α 1 + α 2). ), The delay time by subtracting the delay time β of the main luminance signal Y by the low pass filter 2 105, that is, the delay time by D = (α 1 + α 2 ) -β. .

상기 스위치(107)는 외부로부터 입력되는 스위칭제어신호(SC)에 의해 스위칭되어 상기 지연기1(106)에서 출력되는 메인휘도신호에 상기 저역필터1(103)에서 출력되는 헬퍼신호가 삽입되어 출력되는데, 이 스위칭제어신호(SC)는 헬퍼신호가 실린 구간만 제어하는 신호이다. 그리고, 상기 스위치(107)에서 출력되는 휘도신호가 FM복조기(108)를 통해 복조처리된 후 혼합기(111)의 일측입력으로 제공된다.The switch 107 is switched by a switching control signal (SC) input from the outside and the helper signal output from the low pass filter 1 (103) is inserted into the main luminance signal output from the delay unit 1 (106) and output. The switching control signal SC is a signal for controlling only a section in which a helper signal is carried. Then, the luminance signal output from the switch 107 is demodulated through the FM demodulator 108 and then provided to one side input of the mixer 111.

또한, 상기 휘도/색신호콤필터(104)에서 분리출력되는 색신호(C)는 대역필터2(109)를 통해 콤필터과정에서 발생된 고주파성분이 제거되어 지연기2(110)에 공급되는데, 여기서는 상기 혼합기(111)의 일측입력신호로 공급되는 휘도신호와 타이밍을 맞추기 위해 상기 지연시간(D)에서 상기 대역필터2(109)의 지연시간을 감산한만큼의 지연시간(D-γ)을 갖고 그 혼합기(111)의 타측입력으로 공급되도록 하여 그 휘도신호와 혼합된 다음 기록용 헤드(112)를 통해 기록매체에 기록된다.In addition, the color signal C separated and output from the luminance / color signal comb filter 104 is removed through the band filter 2 109, and the high frequency component generated in the comb filter process is removed to be supplied to the retarder 2 110. In order to match the timing with the luminance signal supplied to one input signal of the mixer 111, the delay time D is equal to the delay time D-γ subtracted from the delay time of the band filter 2 109. It is supplied to the other input of the mixer 111, mixed with the luminance signal, and then recorded on the recording medium through the recording head 112.

한편, 제2도를 참조하여 복합영상신호의 재생시 지연시간 보상과정을 설명하면 다음과 같다.Meanwhile, referring to FIG. 2, a delay time compensation process for reproducing a composite video signal is described below.

헤드(201)를 통해 기록매체에 기록된 복합영상신호(CVBS)가 재생되고, 이는 휘도/색신호콤필터(202)에 의해 메인휘도신호(Y)와 색신호(C)가 분리되고, 저역필터(205)에 의해 메인휘도신호(Y)가 저역필터링되어 그 메인휘도신호(Y)에 삽입된 헬퍼신호가 검출되고, 이는 복조기(206)에 의해 색부반송파(fSC)로 변조된 후 다시 나이퀴스트필터(207)에 의해 나이퀴스트 필터링되어 스위치(209)의 일측고정단자(a)에 공급된다.The composite video signal CVBS recorded on the recording medium through the head 201 is reproduced, and the main luminance signal Y and the color signal C are separated by the luminance / color signal comb filter 202, and the low pass filter ( The main luminance signal Y is low-pass filtered by the 205 to detect a helper signal inserted into the main luminance signal Y, which is modulated by the demodulator 206 into the color subcarrier f SC and then squeezed again. Nyquist filtered by the streak filter 207 is supplied to one fixed terminal (a) of the switch 209.

또한, 상기 메인휘도신호(Y)는 지연기1(203) 및 스위치(204)를 통해 헬퍼구간을 제외한 전구간의 신호가 휘도출력단자(Yout)에 공급되는데, 이때, 상기 저역필터(205)를 통해 y1만큼 지연되고, 나이퀴스트필터(207)를 통해 y2만큼 지연되는 것을 감안하여 그 지연기1(203)에서 지연시간 X = y1+ y2만큼 지연시간을 갖도록 하였다.In addition, the main luminance signal Y is supplied to the luminance output terminal Y out through the delay unit 1 203 and the switch 204, and the signal between all the regions except the helper interval is supplied to the low pass filter 205. In consideration of the delay by y 1 and the delay by y 2 through the Nyquist filter 207, the delay time 1 203 has a delay time X = y 1 + y 2 .

그리고, 색신호(C) 경로에서도 상기와 마찬가진로 지연기2(208)에 의해 상기 지연시간(x)만큼의 지연시간을 갖은 후 스위칭제어신호(SC)에 의해 스위칭되는 스위치(209)의 타측 고정단자(b)에 공급되고, 상기 나이퀴스트필터(207)에서 출력되는 헬퍼신호가 그 색신호에 삽입되어 색신호출력단자(Cout)에 출력된다.The other side of the switch 209 which is switched by the switching control signal SC after having the delay time equal to the delay time x by the path delayer 2 208 in the color signal C path as described above. The helper signal supplied to the fixed terminal b and output from the Nyquist filter 207 is inserted into the color signal and output to the color signal output terminal C out .

이상에서 상세히 설명한 바와 같이 본 발명은 녹화시 헬퍼신호를 색부반송파로 복조하여 휘도신호 경로에 기록하고, 헬퍼신호가 아닌 메인 휘도신호 및 색신호는 PAL 방식의 회로를 경유하여 기록하며, 재생시 그 헬퍼신호를 검출하여 휘도신호 영역에 출력하는 과정에서 휘도신호와 색신호의 출력 타이밍을 보상해줌으로써 브이씨알에서 재생하거나 녹화할 때 신호의 타이밍이 불일치되어 호환성이 결여되는 것을 방지할 수 있는 효과가 있다.As described in detail above, the present invention demodulates a helper signal as a color carrier to record the luminance signal path in the luminance signal path, and records the main luminance signal and the color signal, not the helper signal, via a PAL-type circuit. By compensating the output timing of the luminance signal and the color signal in the process of detecting the signal and outputting it to the luminance signal region, the timing of the signal is inconsistent when playing or recording in the VRC, thereby preventing the lack of compatibility.

Claims (2)

팔플러스 처리된 복합영상신호(CVBS)에서 휘도신호와 색신호를 분리하는 휘도/색신호 분리부와, 상기 분리된 색신호에서 헬퍼신호와 색신호를 분리하는 헬퍼신호 분리부와, 상기 분리된 헬퍼신호와 휘도신호를 각기 처리하는 헬퍼신호 처리부 및 휘도신호 처리부와, 상기 휘도신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연출력하는 휘도신호 지연보상부와, 상기 휘도신호 지연보상부의 출력과 헬퍼신호 처리부의 출력을 합하는 제1합산부와, 헬퍼신호가 제거된 색신호를 처리하는 색신호 처리부와, 상기 색신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연시키는 색신호 지연보상부와, 상기 색신호 지연보상부의 출력신호를 상기 제1합산부의 출력신호에 합하는 제2합산부와, 상기 제2합산부의 출력신호를 기록매체에 기록하는 기록부로 구성한 것을 특징으로 하는 팔플러스 브이씨알의 지연시간 보상장치.A luminance / color signal separator for separating the luminance signal and the color signal from the arm plus processed composite video signal (CVBS), a helper signal separator for separating the helper signal and the color signal from the separated color signal, and the separated helper signal and the luminance A helper signal processing unit and a luminance signal processing unit for processing signals respectively, a luminance signal delay compensator for delaying and outputting the output signal of the brightness signal processing unit by a delay time according to the helper signal processing, and an output and helper of the brightness signal delay compensating unit A first summing unit for adding the outputs of the signal processing unit, a color signal processing unit for processing the color signal from which the helper signal has been removed, a color signal delay compensating unit for delaying the output signal of the color signal processing unit by a delay time according to the helper signal processing, and A second adder which adds the output signal of the color signal delay compensator to the output signal of the first adder, and an output signal of the second adder; The arm plus V delay compensators of CR, characterized in that a recording unit configured to record on the recording medium. 기록매체로부터 재생출력되는 영상신호에서 휘도신호와 색신호를 분리하는 휘도/색신호 분리부와, 상기 분리된 휘도신호에서 헬퍼신호와 휘도신호를 분리하는 헬퍼신호 분리부와, 상기 분리된 헬퍼신호와 색신호를 각기 처리하는 헬퍼신호 처리부 및 색신호 처리부와, 상기 색신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연출력하는 색신호 지연보상부와, 상기 색신호 지연보상부의 출력과 헬퍼신호 처리부의 출력을 합하는 제1합산부와, 헬퍼신호가 제거된 휘도신호를 처리하는 휘도신호 처리부와, 상기 휘도신호 처리부의 출력신호를 상기 헬퍼신호 처리에 따른 지연시간만큼 지연시키는 휘도신호 지연보상부와, 상기 휘도신호 지연보상부의 출력신호를 상기 제1합산부의 출력신호에 합하여 복합영상신호(CVBS)로 출력하는 제2합산부로 구성한 것을 특징으로 하는 팔플러스 브이씨알의 지연시간 보상장치.A luminance / color signal separator for separating the luminance signal and the color signal from the video signal reproduced and output from the recording medium, a helper signal separator for separating the helper signal and the luminance signal from the separated luminance signal, and the separated helper signal and the color signal A helper signal processing unit and a color signal processing unit for respectively processing a color signal delay compensation unit for delaying the output signal of the color signal processing unit by a delay time according to the helper signal processing, an output of the color signal delay compensation unit and an output of the helper signal processing unit. A summation first summation unit, a luminance signal processing unit for processing the luminance signal from which the helper signal has been removed, a luminance signal delay compensation unit for delaying the output signal of the luminance signal processing unit by a delay time according to the helper signal processing, and the luminance The output signal of the signal delay compensator is added to the output signal of the first adder and output as a composite video signal (CVBS). Palplus V-Cal delay time compensation device comprising a second summing unit.
KR1019950000571A 1995-01-14 1995-01-14 Delay time compensation device of pal plus vcr KR0162324B1 (en)

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KR1019950000571A KR0162324B1 (en) 1995-01-14 1995-01-14 Delay time compensation device of pal plus vcr
EP96400082A EP0722254A3 (en) 1995-01-14 1996-01-12 Delay time compensating apparatus for PAL plus video cassette tape recorder

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KR1019950000571A KR0162324B1 (en) 1995-01-14 1995-01-14 Delay time compensation device of pal plus vcr

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KR0162324B1 true KR0162324B1 (en) 1998-12-15

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