KR960000837Y1 - Sound signal detecting device of multi-tv type - Google Patents
Sound signal detecting device of multi-tv type Download PDFInfo
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- KR960000837Y1 KR960000837Y1 KR2019890020238U KR890020238U KR960000837Y1 KR 960000837 Y1 KR960000837 Y1 KR 960000837Y1 KR 2019890020238 U KR2019890020238 U KR 2019890020238U KR 890020238 U KR890020238 U KR 890020238U KR 960000837 Y1 KR960000837 Y1 KR 960000837Y1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/036—Radio; TV
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Abstract
내용 없음.No content.
Description
제 1 도는 종래의 복합 텔레비젼 음성신호 검파장치의 회로도1 is a circuit diagram of a conventional composite television audio signal detection device.
제 2 도는 본 고안에 따른 복합 텔레비젼 음성신호 검파장치의 회로도2 is a circuit diagram of a composite television audio signal detection apparatus according to the present invention
제 3 도는 (a)(b)(c)는 본 고안에 따른 장치의 혼합부 압출력 신호도Figure 3 (a) (b) (c) is a signal signal of the mixing section extrusion force of the apparatus according to the present invention
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 텔레비젼 음성중간 주파수 신호 2 : NTSC"H" 신호1: TV audio intermediate frequency signal 2: NTSC "H" signal
3 : 혼합부 4 : 발진부3: mixing section 4: oscillation section
5 : FM 음성검파부 6 : 음성출력신호5: FM voice detector 6: voice output signal
R10-R16 : 저항 F10-F15 : 대역필터R10-R16: Resistor F10-F15: Band filter
X2, X3 : 발진소자X2, X3: oscillation element
본 고안은 다수의 텔레비젼 방식의 음성신호를 검파하는 장치에 관한 것으로, 특히 현재 세계적으로 각기 사용되고 있는 텔레비젼 방송신호가 음성신호 검파를 한개의 회로로 할 수 있도록 한 다수의 텔레비젼 방식의 음성신호 검파장치에 관한 것이다.The present invention relates to a device for detecting a plurality of television type audio signals, and in particular, a plurality of television type audio signal detection apparatuses for allowing a television broadcasting signal currently used in the world to perform audio signal detection as one circuit. It is about.
이러한 텔레비젼 음성신호 검파장치에 대하여 종래에는 여러가지 텔레비젼 방송신호와 수신을 모두 가능하도록 한 복합 텔레비젼 수신기 또는 VCR과 같은 신호수신매체에서 각기 다른 음성중간 주파수를 갖는 텔레비젼 방송신호에 대응하여 사용할 수 있도록 제 1 도와 같은 복합 TV음성신호 검파장치를 구성하여 사용하고 있다.The conventional apparatus for detecting a television audio signal includes a first apparatus that can be used in correspondence with a television broadcasting signal having a different audio intermediate frequency in a signal receiving medium such as a composite television receiver or a VCR, which enables both various television broadcasting signals and reception. A complex TV audio signal detector such as a tile is used.
이와 같은 종래의 구성은 도시하지는 않았으나, 종래에는 도시된 도면을 참조하면, 중간주파수 필터인 F1, F2, F3, F4의 4종류의 중간주파수에 대응한 음성신호 검파장치가 전자스위치(SW1)에 의해 절환되고 FM음성검파기(5)에서의 검파주파수를 스위치(SW2)에 의해 중간주파수 필터F6, F7를 절환하여 검파함으로써 음성신호 검파기의 특성을 최적인 상태로 구동시키지 못하므로 왜율의 증가등의 성능문제가 대두되었다.Although such a conventional configuration is not shown, in the related art, a voice signal detection device corresponding to four kinds of intermediate frequencies of F1, F2, F3, and F4, which are intermediate frequency filters, is an electronic switch SW 1 . And the detection frequency of the FM voice detector 5 is switched to detect the intermediate frequency filters F6 and F7 by the switch SW 2 so that the characteristics of the voice signal detector cannot be driven in an optimal state, so the distortion rate is increased. Performance problems such as these have emerged.
제 1 도에 도시된 바와 같은 종래의 복합 텔레비젼 음성신호 검파장치에 대하여 그 동작을 상세히 설명하면, 텔레비젼 영상검파부 또는 음성중간 주파수 검파부에서 텔레비젼 음성중간 주파수 신호(1)를 입력하고, 이 신호는 각각의 대역필터(F1-F4)에 인가되는데, 여기에 입력임피던스 결합저장(R1-R4)이 있고, 이 신호는 각각의 결합저항(F1-F4)으로 부터 대역필터(F1-F4)에 인가되고 대역필터(F1)의 출력은 출력 임피던스 결합 저항(R5)으로 분기되는 한편 스위치(SW)의 S12측 단자에 접속된다.The operation of the conventional composite television audio signal detection apparatus as shown in FIG. 1 will be described in detail. The television audio intermediate frequency signal 1 is inputted from the television video detection unit or the audio intermediate frequency detection unit. Is applied to each band filter (F 1 -F 4 ), which has input impedance combined storage (R 1 -R 4 ), and this signal is a band filter from each coupling resistor (F 1 -F 4 ) (F 1 -F 4 ) and the output of the band pass filter F1 is branched to the output impedance coupling resistor R5 while connected to the S 12 side terminal of the switch SW.
이때, 대역필터(F1)는 4.5MHz의 음성대역필터이다. 또한 대역필터(F2)는 6.0MHz의 대역필터이며 필터(F5)의 출력측과 접속되고, 출력임피던스 결합저항(R8)으로 분기 접지되어 스위치(SW1)의 S11측 단자에 접속된다.In this case, the band filter F 1 is a voice band filter of 4.5 MHz. The band filter F 2 is a 6.0 MHz band filter, connected to the output side of the filter F 5 , branched to an output impedance coupling resistor R 8 , and connected to the S11 terminal of the switch SW 1 .
대역필터(F3)와 (F4)는 각각 6.0MHz와 6.5MHz의 대역필터이며, 그 출력은 서로 접속되어 출력임피던스 결합저항(R6)으로 분기되고 혼합부(3)에 입력된다.The band filters F 3 and F 4 are band filters of 6.0 MHz and 6.5 MHz, respectively, and their outputs are connected to each other, branched to the output impedance coupling resistor R 6, and input to the mixing section 3.
발진부(4)는 발진소자(X1)와 결합되어 발전주파수 F2를 혼합부(3)에 입력한다.The oscillation unit 4 is coupled to the oscillation element X 1 and inputs the generation frequency F 2 to the mixing unit 3.
혼합부(3)는 대역필터(F3)(F4)출력신호 f1과 발진기 출력신호 f2를 혼합하여 주파수 f0를 출력하여 저항(R7)과 대역필터(F5)를 통하여 상술한 바와 같이 스위치(SW1)의 S11측 단자에 접속된다.The mixing unit 3 mixes the band filter F 3 (F 4 ) output signal f 1 and the oscillator output signal f 2 to output a frequency f 0 to be described in detail through the resistor R 7 and the band filter F 5 . As such, it is connected to the terminal of the S 11 side of the switch SW 1 .
스위치(SW1)의 가동단자 출력은 NTSC"H" 신호(2)에 의해 절환되며, 절환된 신호는 FM 음성검파기(5)에 입력된다.The output of the movable terminal of the switch SW 1 is switched by the NTSC " H " signal 2, and the switched signal is input to the FM voice detector 5.
FM 음성검파기(5)는 스위치(SW1)에 의해 절환된 각각의 음성중간 주파신호 4.5MHz와 6.0MHz의 신호를 스위치(SW2)에 의해 검파필터(F6, F7)를 선택 절환하여 검파하며, 음성출력신호(6)를 출력하게 된다.The FM voice detector 5 selects and switches the detection filters F 6 and F 7 of the respective voice intermediate frequency signals 4.5 MHz and 6.0 MHz switched by the switch SW 1 by the switch SW 2 . It detects and outputs the audio output signal 6.
스위치(SW2)는 스위치(SW1)와 같이 NTSC"H" 신호(2)에 의해 연동스위치로 동작하여 검파필터(F6, F7)를 입력신호 4.5MHz, 6.0MHz에 대응하도록 하는 것이다.The switch SW 2 acts as an interlocking switch by the NTSC " H " signal 2 like the switch SW 1 so that the detection filters F 6 and F 7 correspond to the input signals 4.5 MHz and 6.0 MHz. .
제 3 도는 본 고안의 다수의 텔레비젼 방식의 음성신호 검파장치의 혼합부 입출력 신호도로써, 상기 혼합부의 동작을 설명하면 다음과 같다.3 is a mixed part input / output signal diagram of a plurality of television-type audio signal detection apparatus of the present invention.
먼저, 혼합부(3)의 입력신호를 f1이라 하고 이것은 제 3 도(b)와 같이 표시되며 발진부(4)의 출력신호 f2는 제 3 도 (a)에 도시된다.First, the input signal of the mixing section 3 is referred to as f 1 , which is represented as shown in FIG. 3 (b) and the output signal f 2 of the oscillator 4 is shown in FIG. 3 (a).
혼합부(3)의 동작은 입력신호 f1과 출력신호 f2를 혼합하는 것으로 혼합부(3)의 출력 f0는 f1과 f2의 각각의 합(f1+f2)과 차(f1-f2) 및 입력신호 f1과 발진신호 f2가 얻어지게 된다.The operation of the mixing section 3 is to mix the input signal f 1 and the output signal f 2 so that the output f 0 of the mixing section 3 is equal to the sum (f 1 + f 2 ) of f 1 and f 2 , respectively ( f 1 -f 2 ), the input signal f 1 and the oscillation signal f 2 are obtained.
이때, 입력신호 f1은 f1+f2,f1-f2에 각각 포함되어 있으므로 이렇게 주파수가 편이된 신호를 대역필터(F5)를 통하여 출력하면 아래와 같이 대역필터(F5)는 6.0MHz 한 종류만의 사용이 가능하다.At this time, since the input signal f 1 is included in f 1 + f 2 and f 1 -f 2 , the frequency shifted signal is output through the band filter F 5 , and the band filter F 5 is 6.0 MHz as shown below. Only one type can be used.
즉, 제 3 도(c)에서와 같이 출력주파수 중에는 합 또는 차 신호를 선택하여 단일주파수 6.0MHz를 얻어냄으로써, 복수의 음성중간 주파수 4.5MHz, 5.5MHz, 6.0MHz, 6.5MHz를 4.5MHz와 6.0MHz로 종류를 2원화하여 음성신호를 검파한다.That is, as shown in (c) of FIG. 3, a single frequency 6.0 MHz is obtained by selecting a sum or difference signal among the output frequencies, so that a plurality of voice intermediate frequencies 4.5 MHz, 5.5 MHz, 6.0 MHz, and 6.5 MHz are 4.5 MHz and 6.0. It detects the audio signal by binarizing the kind at MHz.
이와 같이, 종래의 검파장치는 FM 음성검파기(5)에서 검파필터(F6, F7)의 선택회로 또는 절환회로를 항상 구비하여야 다수 텔레비젼 방식의 음성신호 검파가 가능하므로 검파필터의 특성열화나 변경이 발생하기 쉬웠고 음성출력신호의 왜율이 증가되는 단점이 있었다.As described above, the conventional detection apparatus must always have a selection circuit or switching circuit of the detection filters F 6 and F 7 in the FM voice detector 5, so that it is possible to detect the voice signals of many television systems. The change was easy to occur and the distortion of the voice output signal was increased.
따라서, 본 고안은 상기 종래의 제반 문제점을 해결하기 위해 안출된 것으로, 본 고안의 목적은 텔레비젼 방송신호의 음성신호 검파를 하나의 회로로 간략화 함으로써, 최적의 검파 특성을 갖도록 하여 성능이 우수한 음성신호 출력을 얻을 수 있도록 한 다수의 텔레비젼 방식의 음성신호 검파장치를 제공함에 있다.Therefore, the present invention has been devised to solve the above-mentioned general problems, and an object of the present invention is to simplify the detection of the audio signal of a television broadcast signal into a single circuit, so that it has an optimal detection characteristic and has an excellent performance. The present invention provides a plurality of television sound signal detectors capable of obtaining an output.
상기한 목적을 달성하기 위한 본 고안에 따른 다수의 텔레비젼 방식의 음성신호 검파장치의 특징은, 입력되는 음성중간 주파신호를 해당 방송 방식에 따른 일정 주파수로 필터링하는 필터부와 ; 시준신호 레벨에 따라 스위칭 되어 소정의 발진 주파수를 출력하는 발진부와 ; 상기 기준신호레벨에 따라 상기 필터부위 소정 대역신호와 상기 발진부의 소정 대역신호를 혼합하는 혼합부와 ; 상기 혼합부로 부터 출력되는 신호를 검파하여 음성신호로 출력하는 FM 음성 검파부를 포함하여 구성한 점에 있다.Features of a plurality of television type audio signal detection device according to the present invention for achieving the above object, the filter unit for filtering the input voice intermediate frequency signal to a predetermined frequency according to the corresponding broadcast method; An oscillator which is switched according to the collimation signal level and outputs a predetermined oscillation frequency; A mixing unit for mixing the predetermined band signal at the filter unit and the predetermined band signal at the oscillator unit according to the reference signal level; And an FM voice detector for detecting a signal output from the mixing section and outputting the signal as a voice signal.
이하, 본 고안에 따른 다수의 텔레비젼 방식의 음성신호 검파장치의 바람직한 일 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a plurality of television sound signal detection apparatus according to the present invention will be described in detail.
제 2 도를 참조하면, 텔레비젼 음성중간 주파수신호(1)는 저항(R10, R11, R12, R13)을 거쳐 각각의 대역필터(F10-F13)에 입력되고, 대역필터(F10)의 출력은 검파필터(F14)의 출력과 공통으로 입력되며, 저항(R16)에 의해 분기되어 접지로 흐르고, FM 음성 검파기(5)에 입력된다.Referring to FIG. 2, the television audio intermediate frequency signal 1 is input to each band filter F 10 -F 13 through a resistor R 10 , R 11 , R 12 , R 13 , and a band filter ( The output of F 10 ) is commonly input to the output of detection filter F 14 , branched by resistor R 16 to flow to ground, and input to FM voice detector 5.
또한 대역필터(F11-F13)의 출력은 서로 공통 접속되고 출력임피던스 결합저항(R14)에 의해 분배되어 혼합부(3)에 입력된다.In addition, the outputs of the band filters F 11 -F 13 are commonly connected to each other and distributed by the output impedance coupling resistor R 14 and input to the mixing section 3.
상술한 대역필터(F10-F13)는 각각 6.0MHz, 4.5MHz, 5.5MHz, 6.5MHz의 대역필터로 구성되며, 혼합부(3)의 입력측으로 4.5MHz, 5.5MHz, 6.5MHz의 3종류의 신호가 입력된다.The above-described band filters F 10 -F 13 are composed of 6.0 MHz, 4.5 MHz, 5.5 MHz, and 6.5 MHz band filters, respectively, and three types of 4.5 MHz, 5.5 MHz, and 6.5 MHz are input to the mixing section 3. Signal is input.
또한 발진부(4)는 발진소자(X2, X3)와 스위치(SW3)의 선택에 의해 각각 1.5MHz, 0.5MHz를 발진주파수로 출력하며 이 신호는 혼합부(3)로 인가된다.In addition, the oscillator 4 outputs 1.5 MHz and 0.5 MHz at the oscillation frequency, respectively, by selecting the oscillation elements X 2 , X 3 and the switch SW 3 , and this signal is applied to the mixing unit 3.
이때, 스위치(SW3)의 제어단으로 NTSC "H"가 인가됨에 따라 가동단자가 S31측 단자에 연결되면, 발진소자(X2)는 1.5MHz를 발진하여 함에 따라 NTSC 수신상태로 되며 대역필터(F11)의 4.5MHz 입력신호에 대한 혼합부(3)의 출력신호는 4.5MHz+1.5MHz와 4.5MHz-1.5MHz의 두 종류가 되며, 이 혼합기 출력신호는 저항(R15)을 경유하고, 6.0MHz 대역필터(F14)를 통해서 4.5MHz+1.5MHz의 합신호를 얻어내고 FM 음성검파기(5)에 입력된다.At this time, when the operating terminal is connected to the terminal of S 31 as NTSC "H" is applied to the control terminal of the switch (SW 3 ), the oscillation element (X 2 ) oscillates 1.5MHz, the NTSC reception state and the band The output signal of the mixer section 3 to the 4.5 MHz input signal of the filter F 11 is of two types: 4.5 MHz + 1.5 MHz and 4.5 MHz- 1.5 MHz, and the mixer output signal is passed through the resistor R 15 . Then, the sum signal of 4.5 MHz + 1.5 MHz is obtained through the 6.0 MHz band filter F 14 and input to the FM voice detector 5.
또한, 스위치(SW3)의 가동단자는 S32측 단자로 선택되면 (NTSC"L" 상태), 발진소자(X3)에 의해 0.5MHz를 발진하고, 대역필터(F12)와 대역필터(F13)는 각각 0.5MHz 및 6.5MHz의 입력신호에 의해 혼합부(3)를 동작시킨다.In addition, when the movable terminal of the switch SW 3 is selected as the S 32 terminal (NTSC "L" state), the oscillation element X 3 oscillates 0.5 MHz, and the band filter F 12 and the band filter ( F 13 ) operates the mixing section 3 by input signals of 0.5 MHz and 6.5 MHz, respectively.
또한, 4.5MHz 성분은 NTSC "H" 일때만 입력되므로 대역필터(F11)의 출력이 없어 무시된다. 이때, 5.5MHz 및 6.5MHz의 텔레비젼 음성중간 주파신호도 동시에 입력되는 경우는 없으므로, 각기 대역필터(F12)와 대역필터(F13)의 출력신호에 대한 혼합부(3)의 출력신호는 각각에 대하여 (5.5MHz+0.5MHz), (5.5MHz-0.5MHz), (6.5MHz+0.5MHz), (6.5MHz-0.5MHz)가 되며, 이러한 신호는 저항(R15)을 거쳐 대역필터(F14)에 의해 6.0MHz의 대역신호만 통과되어서 FM 음성검파기(5)로 입력된다.In addition, since the 4.5MHz component is input only when NTSC "H", there is no output of the band filter F 11 and is ignored. In this case, since 5.5 MHz and 6.5 MHz television audio intermediate frequency signals are not input at the same time, the output signals of the mixing section 3 with respect to the output signals of the band filter F 12 and the band filter F 13 are respectively output. For (5.5MHz + 0.5MHz), (5.5MHz-0.5MHz), (6.5MHz + 0.5MHz), (6.5MHz-0.5MHz), and these signals pass through the resistor (R 15 ) 14 ) only the 6.0 MHz band signal is passed through and input to the FM voice detector 5.
이와 같이 FM 음성검파기(5)의 입력신호는 항상 6.0MHz의 한 종류의 신호가 되므로 검파필터(F15)는 6.0MHz의 한개로써 결정되고 선택할 필요가 없게 된다.In this way, since the input signal of the FM voice detector 5 is always one kind of signal of 6.0 MHz, the detection filter F 15 is determined as one of 6.0 MHz and there is no need to select it.
따라서 본 고안에 따른 다수의 텔레비젼 방식의 음성신호 검파장치는, FM 음성검파기의 검파필터부가 간단해지고 최적의 검파특성을 갖도록 함으로써, 성능이 우수한 음성신호 출력(6)을 얻을 수 있다.Therefore, in the many television system audio signal detection apparatus according to the present invention, the audio signal output 6 having excellent performance can be obtained by making the detection filter portion of the FM audio detector simple and having the optimum detection characteristics.
또한 FM 음성검파기의 입력신호를 절환 선택하는 스위치(SW1)의 구성이 삭제되므로 전자스위치로 구성된 스위치(SW1)에 의한 신호의 손실도 본 고안에서는 없어지는 등 여러가지 장점이 있는 것이다.In addition, since the configuration of the switch SW 1 for switching the input signal of the FM voice detector is deleted, the signal loss caused by the switch SW 1 composed of the electronic switch is also eliminated in the present invention.
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KR2019890020238U KR960000837Y1 (en) | 1989-12-28 | 1989-12-28 | Sound signal detecting device of multi-tv type |
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KR2019890020238U KR960000837Y1 (en) | 1989-12-28 | 1989-12-28 | Sound signal detecting device of multi-tv type |
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