KR0151497B1 - Reproducing device for pal-plus video signal - Google Patents
Reproducing device for pal-plus video signal Download PDFInfo
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- KR0151497B1 KR0151497B1 KR1019950002492A KR19950002492A KR0151497B1 KR 0151497 B1 KR0151497 B1 KR 0151497B1 KR 1019950002492 A KR1019950002492 A KR 1019950002492A KR 19950002492 A KR19950002492 A KR 19950002492A KR 0151497 B1 KR0151497 B1 KR 0151497B1
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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
- H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/007—Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system
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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
- H04N9/80—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
- H04N9/83—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 recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
- H04N9/832—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 recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal using an increased bandwidth for the luminance or the chrominance signal
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Abstract
본 발명은 팔플러스방송신호가 녹화된 기록매체를 재생하기 위한 팔플러스영상신호 재생장치에 관한 것이다. 이러한 본 발명은 신호비트 감지부에서 휘도신호중 23번째 신호비트의 정보를 검출하여 재생된 신호가 팔플러스신호인지 팔신호인지를 감지한다. 상기 감지결과에 따라 제어부는 신호비트 재처리부와 스위칭부의 동작을 제어한다. 재생된 신호가 팔플러스신호일 경우 신호비트 재처리부는 복조된 휘도신호에서 헬퍼신호를 제거하고 변조부호를 기록하는 등의 처리를 한다. 또한 헬퍼신호 처리부는 휘도신호 중 헬퍼신호를 버스트신호와 색부반송파를 이용해 만든 소정위상의 색부반송파로 평형변조한다. 스위칭부는 복조된 색신호 또는 변조된 헬퍼신호를 선택하여 헬퍼신호가 실린 색신호를 출력한다. 따라서, 현재까지 녹화규격만이 정의된 팔플러스신호용 기록재생장치를 완전하게 구현할 수 있는 효과가 있다.The present invention relates to an apparatus for reproducing an arm plus video signal for reproducing a recording medium in which an arm plus broadcast signal is recorded. In the present invention, the signal bit detector detects information of the 23rd signal bit of the luminance signal to detect whether the reproduced signal is an arm plus signal or an arm signal. According to the detection result, the control unit controls the operation of the signal bit reprocessing unit and the switching unit. If the reproduced signal is the FalPlus signal, the signal bit reprocessing unit removes the helper signal from the demodulated luminance signal and records the modulation code. In addition, the helper signal processing unit equilibrates the helper signal among the luminance signals with a color phase carrier of a predetermined phase using a burst signal and a color carrier. The switching unit selects a demodulated color signal or a modulated helper signal and outputs a color signal carrying the helper signal. Therefore, there is an effect that the present invention can completely realize the recording / playback apparatus for the Arm Plus signal defined only by the recording standard.
Description
제1도는 본 발명의 팔플러스영상신호 재생장치를 나타낸 블럭구성도.1 is a block diagram showing an arm plus image signal reproducing apparatus of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 휘도신호 복조부 20 : 색신호 복조부10: luminance signal demodulator 20: color signal demodulator
30 : 신호비트 감지부 40 : 제어부30: signal bit detection unit 40: control unit
60 : 신호비트 재처리부 61 : 헬퍼신호 제거부60: signal bit reprocessing unit 61: helper signal removal unit
62 : 신호비트 재기록부 70 : 헬퍼신호 처리부62: signal bit rewrite unit 70: helper signal processing unit
71 : 버스트게이트부 72 : 자동위상제어기71: burst gate portion 72: automatic phase controller
73 : 헬퍼신호 변조부 80 : 스위칭부73: helper signal modulator 80: switching unit
본 발명은 팔플러스(PAL Plus) 방송신호가 녹화된 기록매체를 재생하기 위한 장치를 구현하여 현재까지 녹화규격만이 정의된 팔플러스신호용 기록재생장치를 완전하게 구현할 수 있도록 한 팔플러스영상신호 재생장치에 관한 것이다.The present invention implements an apparatus for reproducing a recording medium on which a PAL Plus broadcast signal is recorded, thereby reproducing an arm plus image signal capable of fully implementing a recording and reproducing apparatus for the arm plus signal, which has been defined only by the recording standards. Relates to a device.
현재 유럽에서 시험방송되고 있는 팔플러스신호의 규격은 일반 팔(PAL) 신호와는 구별된다. 방송신호와 화면의 비율이 맞지 않을 경우, 즉 신호규격이 16:9인 팔플러스신호를 화면종횡비가 4:3인 일반 TV에서도 왜곡없이 시청할 수 있도록 하기 위해 팔플러스방송신호에는 헬퍼(Helper) 신호가 포함되어 있다.The specification of the FalPlus signal currently being tested in Europe is distinct from the PAL signal. When the ratio of the broadcast signal and the screen does not match, that is, the Helper signal is added to the palplus broadcast signal so that a general Plus 9 signal with a 16: 9 signal aspect ratio can be viewed without distortion on a general TV with a 4: 3 aspect ratio. Is included.
즉, 방송국에서 16:9의 팔플러스신호를 수직적으로 4:3의 TV에 맞추어 출력하면, 화면에는 전체 576라인중 432라인만이 보이게 되므로 팔플러스방송신호의 나머지부분을 헬퍼신호로서 처리하여 화면의 상측과 하측에 각각 72라인씩 위치하도록 하는 것이다. 그러면 일반 TV에서는 팔플러스방송신호를 왜곡없이 시청할 수 있고, 팔플러스신호용 TV에서는 이 헬퍼신호를 복조하여 화면왜곡없이 576라인을 모두 시청하게 된다.That is, when a broadcasting station outputs a 16: 9 PAL Plus signal vertically to a 4: 3 TV, only 432 lines of the total 576 lines are displayed on the screen, and the remaining portion of the PALPlus broadcasting signal is processed as a helper signal. 72 lines on the upper and lower sides of each. Then, the general TV can watch the FalPlus broadcast signal without distortion, and the FalPlus signal TV demodulates this helper signal to watch all 576 lines without distortion.
팔플러스영상신호의 포맷에 따르면, 팔플러스신호와 일반 팔신호와의 구별 및 TV복조시 정확한 복조를 하기 위하여 팔플러스영상신호의 23번째 라인에 펄스로 부호화된 정보를 실어준다. 이때 팔플러스영상신호의 특성(화면종횡비, 색처리상태등)과 헬퍼신호의 처리관계등을 부호화된 펄스신호로 실어준다.According to the format of the FalPlus video signal, pulse-coded information is loaded on the 23rd line of the FalPlus video signal in order to distinguish between the Falplus signal and the normal arm signal and to accurately demodulate the TV. At this time, the characteristics of the FalPlus video signal (screen aspect ratio, color processing state, etc.) and the processing relationship of the helper signal are loaded as encoded pulse signals.
팔플러스영상신호를 녹화할때는 변조된 헬퍼신호가 녹화 또는 재생동작시 소실되는 것을 방지하기 위하여 헬퍼신호를 원래의 휘도신호로 복조한 후 녹화한다. 그리고 헬퍼신호가 복조되었다는 것을 나타내기 위하여 팔플러스영상신호의 23번째 라인의 신호비트(Signal Bit)를 헬퍼신호가 복조된 부호로 변경한 후 녹화한다. 그러나 종래에는 상기와 같이 팔플러스신호용 VTR의 녹화장치는 규격화되어 있지만, 재생장치는 아직 그 규격이 확정되어 있지 않으므로 개발된 재생장치가 없다는 문제점이 있었다.When recording the Arm Plus video signal, the helper signal is demodulated to the original luminance signal in order to prevent the modulated helper signal from being lost during the recording or reproducing operation. In order to indicate that the helper signal has been demodulated, the signal bit of the 23rd line of the FalPlus video signal is changed to the demodulated code and recorded. However, in the related art, although the recording apparatus of the PAL plus signal VTR has been standardized as described above, the playback apparatus has not been determined yet.
본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 팔플러스영상신호가 녹화된 테이프를 재생하기 위한 장치를 구현하여 현재까지 녹화규격만이 정의된 팔플러스신호용 기록재생장치를 완전하게 구현할 수 있도록 한 팔플러스영상신호 재생장치를 제공하는데 있다.The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to implement a device for reproducing a tape recorded with a FalPlus video signal, so that only a recording standard is defined. An object of the present invention is to provide an arm plus video signal reproducing apparatus.
상기와 같은 목적을 달성하기 위한 본 발명의 팔플러스영상신호 재생장치는 복조된 휘도신호에서 23번째 신호비트의 정보를 검출하여 재생된 신호가 팔플러스신호인지 팔신호인지를 감지하는 신호비트 감지부를 구비한다. 신호비트 감지부의 출력신호에 따라 제어부에서 제어신호를 출력하여 신호비트 재처리부와 스위칭부의 동작을 제어한다.The arm plus video signal reproducing apparatus of the present invention for achieving the above object is a signal bit detecting unit for detecting whether the reproduced signal is the arm plus signal or the arm signal by detecting the information of the 23rd signal bit from the demodulated luminance signal Equipped. The control unit outputs a control signal according to the output signal of the signal bit detection unit to control the operation of the signal bit reprocessing unit and the switching unit.
신호비트 재처리부는 복조된 휘도신호를 그대로 출력하거나 또는 헬퍼 신호를 제거하고 변조부호를 기록하는 등의 처리를 하여 혼합부로 출력한다. 또한 헬퍼신호 처리부는 휘도신호 복조부에서 출력된 헬퍼신호를 색신호 복조부의 버스트신호와 색부반송파를 이용해 만든 소정위상의 색부반송파로 평형변조한다. 제어부의 출력단에 연결된 스위칭부는 제어신호에 따라 복조된 색신호 또는 헬퍼신호 처리부에서 출력된 헬퍼신호를 선택하여 헬퍼신호가 실린 색신호를 혼합부로 출력한다.The signal bit reprocessing unit outputs the demodulated luminance signal as it is, or removes the helper signal, records the modulation code, and outputs the mixed signal to the mixing unit. In addition, the helper signal processor balances the helper signal output from the luminance signal demodulator by a color phase carrier of a predetermined phase made using the burst signal of the color signal demodulator and the color carrier. The switching unit connected to the output terminal of the controller selects the demodulated color signal or the helper signal output from the helper signal processor and outputs the color signal carrying the helper signal to the mixing unit.
이하, 첨부된 제1도를 참조하여 본 발명의 실시예를 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached FIG. 1.
제1도는 본 발명의 팔플러스영상신호 재생장치를 나타낸 블럭구성도이다. 도시된 바와 같이, 본 발명의 재생장치는 영상헤드(1)에 의해 테이프로부터 픽업(Pick-up)된 영상신호를 각각 입력받아 원래의 휘도신호와 색신호로 복조하는 휘도신호 복조부(10)와 색신호 복조부(20)를 구비한다. 휘도 신호 복조부(10)에서 출력된 휘도신호를 신호비트 감지부(30)와 신호비트 재처리부(60)와 헬퍼신호 처리부(70)로 각각 인가된다.1 is a block diagram showing an arm plus image signal reproducing apparatus of the present invention. As shown, the playback apparatus of the present invention includes a luminance signal demodulator 10 for receiving a video signal picked up from a tape by an image head 1 and demodulating the original luminance signal and a color signal, respectively; A color signal demodulation unit 20 is provided. The luminance signal output from the luminance signal demodulator 10 is applied to the signal bit detector 30, the signal bit reprocessor 60, and the helper signal processor 70, respectively.
신호비트 감지부(30)는 복조된 휘도신호에서 23번째 신호비트의 정보를 검출하여 테이프에서 재생된 신호가 팔플러스영상신호인지 팔영상신호인지를 판단한다. 신호비트 감지부(30)의 출력단에 연결된 제어부(40)는 상기 판단결과에 따라 제어신호를 출력하여 표시부(50) 및 신호비트 재처리부(60)와 스위칭부(80)의 동작을 제어한다. 제어부(40)의 출력단에는 표시부(50)가 연결되고, 이 표시부(50)는 상기 제어신호에 따라 동작하여 재생된 신호가 팔플러스영상신호임을 표시하게 된다.The signal bit detector 30 detects information of the 23rd signal bit from the demodulated luminance signal to determine whether the signal reproduced from the tape is an arm plus image signal or an arm image signal. The control unit 40 connected to the output terminal of the signal bit detection unit 30 outputs a control signal according to the determination result to control the operation of the display unit 50, the signal bit reprocessing unit 60, and the switching unit 80. A display unit 50 is connected to an output terminal of the controller 40, and the display unit 50 operates according to the control signal to display that the reproduced signal is a Fal plus image signal.
또한 신호비트 재처리부(60)는 헬퍼신호 제거부(61)와 신호비트 재기록(Rewrite)부(62)로 구성되어, 제어부(40)의 출력신호에 따라 복조된 휘도신호를 그대로 출력하거나 또는 헬퍼신호를 제거하고 변조부호를 기록하는 등의 처리를 하여 출력한다. 휘도신호 복조부(10)의 출력단에 연결된 헬퍼신호 제거부(61)는 제어부(40)의 제어신호에 따라 동작하여 입력된 휘도신호로부터 헬퍼신호를 제거한다. 마찬가지로 제어부(40)의 제어신호에 따라 동작하는 신호비트 재기록부(62)는 헬퍼신호 제거부(61)의 출력신호를 입력받아 신호비트의 소정위치에 헬퍼신호가 변조되었음을 알리는 부호를 재기록한다.In addition, the signal bit reprocessing unit 60 is composed of a helper signal removing unit 61 and a signal bit rewrite unit 62 to output the demodulated luminance signal according to the output signal of the control unit 40 as it is or helper. The signal is output after processing such as removing the signal and recording the modulation code. The helper signal removing unit 61 connected to the output terminal of the luminance signal demodulator 10 operates according to the control signal of the controller 40 to remove the helper signal from the input luminance signal. Similarly, the signal bit rewriting unit 62 operating according to the control signal of the control unit 40 receives the output signal of the helper signal removing unit 61 and rewrites a code indicating that the helper signal has been modulated at a predetermined position of the signal bit.
신호비트 재기록부(62)에서 출력된 휘도신호는 혼합부(90)와 휘도신호 출력단자(Yout)로 각각 인가된다. 한편, 휘도 및 색신호 복조부(10)(20)의 출력단에는 헬퍼신호 처리부(70)가 연결되어, 휘도신호 복조부(10)에서 출력된 헬퍼신호를 색신호 복조부(20)의 버스트(Burst)신호와 색부반송파(Color Sub Carrier, fSC)를 이용해 만든 소정위상의 색부반송파(fSC(u))로 평형변조한다.The luminance signal output from the signal bit rewrite unit 62 is applied to the mixing unit 90 and the luminance signal output terminal Yout, respectively. On the other hand, the helper signal processing unit 70 is connected to the output terminal of the luminance and color signal demodulator 10 and 20, the burst of the helper signal output from the luminance signal demodulator 10 burst (Burst) the balanced-modulated by a color subcarrier signal (color sub Carrier, f SC) color sub-carrier (f SC (u)) of a predetermined phase made with.
이 헬퍼신호 처리부(70)는 버스트 게이트(Burst Gate)부(71)와 자동위상제어기(APC;72)와 헬퍼신호 변조부(73)로 구성되고, 버스트게이즈부(71)는 색신호 복조부(20)에서 출력된 색신호중 버스트신호만을 통과시킨다. 버스트게이트부(71)의 출력단에 연결된 자동위상제어기(72)는 상기 버스트신호와 색신호 복조부(20)에서 출력된 색부반송파(fsc)를 입력받아 색차신호(B-Y)의 위상과 동일한 색부반송파((fSC(u))를 출력한다. 자동위상제어기(72)의 출력단에는 헬퍼신호 변조부(73)가 연결되어, 휘도신호 복조부(10)로부터 입력된 헬퍼신호를 상기 색부반송파(fSC(u))로 평형변조하고, 변조된 헬퍼신호를 스위칭부(80)로 입력된다.The helper signal processor 70 includes a burst gate section 71, an automatic phase controller (APC) 72, and a helper signal modulator 73, and the burst gaze section 71 includes a color signal demodulation section. Only the burst signal of the color signals output from (20) is passed. The automatic phase controller 72 connected to the output terminal of the burst gate unit 71 receives the color signal carrier fsc output from the burst signal and the color signal demodulator 20, and has a color carrier similar to the phase of the color difference signal BY. (f SC (u)) A helper signal modulator 73 is connected to an output terminal of the auto phase controller 72, and the helper signal inputted from the luminance signal demodulator 10 is transmitted to the color carrier (f SC). (u)), and the modulated helper signal is input to the switching unit 80.
스위칭부(80)는 제어부(40)의 제어신호에 따라 색신호 복조부(20)에서 출력된 색신호나 헬퍼신호 변조부(73)에서 출력된 헬퍼신호를 선택적으로 출력한다. 스위칭부(80)의 출력신호는 혼합부(90)와 색신호출력단자(Cout)로 각각 인가되고, 혼합부(90)는 상기 신호비트 재기록부(60)에서 출력된 휘도 신호와 스위칭부(80)에서 출력된 색신호를 혼합하여 복합영상신호를 라인출력단자(Lout)로 출력한다.The switching unit 80 selectively outputs the color signal output from the color signal demodulation unit 20 or the helper signal output from the helper signal modulator 73 according to the control signal of the control unit 40. The output signal of the switching unit 80 is applied to the mixing unit 90 and the color signal output terminal Cout, respectively, and the mixing unit 90 outputs the luminance signal and the switching unit 80 outputted from the signal bit rewriting unit 60. ) And outputs the composite video signal to the line output terminal (Lout) by mixing the color signal output from the.
상기와 같이 구성된 팔플러스영상신호 재생장치의 동작을 설명하면 다음과 같다.The operation of the PALplus video signal reproducing apparatus configured as described above is as follows.
영상헤드(1)에 의해 테이프로부터 읽혀진 영상신호는 휘도신호 복조부(10)와 색신호 복조부(20)에서 휘도신호 및 색신호로 나뉘어 복조된다. 신호비트 감지부(30)는 복조된 휘도신호중 23번째 신호비트를 검출하여 현재 재생된 신호가 팔플러스신호인지 일반 팔신호인지를 감지한다. 현재의 신호가 일반 팔신호일 경우 제어부(40)는 신호비트 재처리부(60)로 제어신호를 출력하여 헬퍼신호 제거부(61)와 신호비트 재기록부(62)가 동작되지 않도록 한다. 그러면 휘도신호 복조부(10)에서 출력된 휘도신호가 그대로 헬퍼신호 제거부(61)와 신호비트 재기록부(62)를 통과하여 출력된다.The video signal read from the tape by the video head 1 is demodulated in the luminance signal demodulator 10 and the color signal demodulator 20 into luminance signals and color signals. The signal bit detector 30 detects the 23rd signal bit of the demodulated luminance signal and detects whether the currently reproduced signal is an arm plus signal or a general arm signal. When the current signal is a normal arm signal, the control unit 40 outputs a control signal to the signal bit reprocessing unit 60 so that the helper signal removing unit 61 and the signal bit rewriting unit 62 are not operated. Then, the luminance signal output from the luminance signal demodulator 10 is passed through the helper signal removing unit 61 and the signal bit rewriting unit 62 as it is.
또한 제어부(40)는 스위칭부(80)로 제어신호를 출력하여 색신호 복조부(20)에서 출력된 색신호가 그대로 스위칭부(80)를 통해 출력되도록 한다. 이때 헬퍼신호 처리부(70)는 동작하지 않으므로 제1도의 재생장치는 일반 VTR과 동일하게 동작한다. 신호비트 재기록부(60)와 스위칭부(80)에서 출력된 휘도 및 색신호는 출력단자(Yout)(Cout)를 통해 각각 출력됨과 아울러, 혼합부(90)에서 혼합되어 복합영상신호가 라인출력단자(Lout)로 출력된다.In addition, the control unit 40 outputs a control signal to the switching unit 80 so that the color signal output from the color signal demodulation unit 20 is output through the switching unit 80 as it is. In this case, since the helper signal processing unit 70 does not operate, the reproducing apparatus of FIG. 1 operates in the same manner as the general VTR. The luminance and color signals output from the signal bit rewrite unit 60 and the switching unit 80 are respectively output through the output terminal Yout, and are mixed in the mixing unit 90 so that the composite image signal is line output terminal. Is output as (Lout).
현재의 신호가 팔플러스신호일 경우 제어부(40)는 표시부(50)로 제어신호를 출력하여 현재의 재생신호가 팔플러스신호임을 나타낸다. 다음에, 헬퍼신호 제거부(61)를 제어하여 휘도신호에 포함된 복조된 헬퍼신호를 제거하고, 신호비트 재기록부(62)를 제어하여 헬퍼신호 제거부(61)로부터 입력된 23번째 신호비트에 헬퍼신호가 변조되어 실려있다는 것을 펄스부호로 표시한다. 신호비트 재처리부(60)에서 상기 과정을 거친 휘도신호는 혼합부(90)와 출력단자(Yout)로 출력된다.If the current signal is an arm plus signal, the controller 40 outputs a control signal to the display unit 50 to indicate that the current playback signal is an arm plus signal. Next, the helper signal removing unit 61 is controlled to remove the demodulated helper signal included in the luminance signal, and the signal bit rewrite unit 62 is controlled to control the 23rd signal bit input from the helper signal removing unit 61. Indicates that the helper signal is modulated and loaded with a pulse code. In the signal bit reprocessing unit 60, the luminance signal passed through the above process is output to the mixing unit 90 and the output terminal Yout.
한편, 복조된 색신호는 스위칭부(80)로 입력되고, 색신호중 버스트신호는 버스트게이트부(71)를 통과하여, 색부반송파(fSC)는 직접 자동위상제어기(72)로 입력된다. 자동위상제어기(72)는 색의 u신호(버스트대비 ±/35°위치), 즉 색차신호(B-Y)의 위상과 동일한 색부반송파(fSC(u))를 만들어 헬퍼신호 변조부(73)로 출력하고, 여기서 휘도신호에 포함된 헬퍼신호는 상기 색부반송파(fSC(u))에 의해 평형변조되어 스위칭부(80)로 입력된다. 여기서, 헬퍼 신호 변조부(73)를 독립발진단을 사용하여 구성할 수도 있다.On the other hand, the demodulated color signal is input to the switching unit 80, the burst signal of the color signal passes through the burst gate unit 71, the color carrier carrier (f SC ) is directly input to the automatic phase controller 72. The automatic phase controller 72 generates a color u-carrier (f SC (u)) having the same color as the u-signal (± / 35 ° of the burst), that is, the phase of the color difference signal BY, to the helper signal modulator 73. The helper signal included in the luminance signal is balanced by the color carrier f SC (u) and input to the switching unit 80. Here, the helper signal modulator 73 may be configured using an independent oscillator.
통상 헬퍼신호는 휘도신호의 상측과 하측에 각각 72라인씩 실려 있으므로 이 부분에서 제어부(40)는 변조된 헬퍼신호가 출력되도록 스위칭부(80)를 제어하고, 나머지 경우에는 복조된 색신호가 출력되도록 제어한다. 그러면 스위칭부(80)에서는 변조된 헬퍼신호가 실린 색신호가 출력되고, 이 색신호는 출력단자(Cout)를 통해 출력됨과 아울러, 혼합부(90)에서 휘도신호와 혼합되어 복합영상신호가 된다. 이렇게 분리 및 혼합된 신호들은 팔플러스 신호규격을 완전히 만족시키는 팔플러스영상신호가 된다.In general, since the helper signal has 72 lines on the upper side and the lower side of the luminance signal, the control unit 40 controls the switching unit 80 to output the modulated helper signal, and in this case, the demodulated color signal. To control. Then, the switching unit 80 outputs a color signal carrying the modulated helper signal, and the color signal is output through the output terminal Cout and mixed with the luminance signal by the mixing unit 90 to form a composite image signal. These separated and mixed signals become a FalPlus video signal that fully satisfies the FalPlus signal specification.
이상에서와 같이 본 발명에 의하면 팔플러스영상신호가 녹화된 테이프를 재생하는 장치를 구현할 수 있으므로 현재까지 녹화규격만이 정의된 팔플러스신호용 기록재생장치를 완전하게 구현할 수 있는 효과가 있다. 특히, 본 발명을 VHS, S-VHS, 8㎜, 방송용 VTR등의 모든 VTR시스템에 적용하여 최적의 재생장치를 구현할 수도 있다.As described above, according to the present invention, a device for reproducing a tape on which a FalPlus video signal is recorded can be implemented. Thus, a recording and reproducing device for a Falplus signal in which only a recording standard is defined up to now can be completely implemented. In particular, the present invention can be applied to all VTR systems such as VHS, S-VHS, 8 mm, broadcast VTR, and the like to realize an optimum playback apparatus.
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950002492A KR0151497B1 (en) | 1995-02-10 | 1995-02-10 | Reproducing device for pal-plus video signal |
| DE19604757A DE19604757C2 (en) | 1995-02-10 | 1996-02-09 | PALplus video recorder |
| GB9602828A GB2297879B (en) | 1995-02-10 | 1996-02-12 | Reproduction apparatus of a PAL plus video signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950002492A KR0151497B1 (en) | 1995-02-10 | 1995-02-10 | Reproducing device for pal-plus video signal |
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| Publication Number | Publication Date |
|---|---|
| KR960032408A KR960032408A (en) | 1996-09-17 |
| KR0151497B1 true KR0151497B1 (en) | 1998-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950002492A KR0151497B1 (en) | 1995-02-10 | 1995-02-10 | Reproducing device for pal-plus video signal |
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| Country | Link |
|---|---|
| KR (1) | KR0151497B1 (en) |
| DE (1) | DE19604757C2 (en) |
| GB (1) | GB2297879B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07212719A (en) * | 1994-01-14 | 1995-08-11 | Victor Co Of Japan Ltd | Video signal recording and reproducing system and device, video signal modem |
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1995
- 1995-02-10 KR KR1019950002492A patent/KR0151497B1/en not_active IP Right Cessation
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1996
- 1996-02-09 DE DE19604757A patent/DE19604757C2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| KR960032408A (en) | 1996-09-17 |
| DE19604757A1 (en) | 1996-08-22 |
| DE19604757C2 (en) | 1998-07-30 |
| GB9602828D0 (en) | 1996-04-10 |
| GB2297879B (en) | 1997-01-15 |
| GB2297879A (en) | 1996-08-14 |
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