KR890008299Y1 - Second audio signal detecting device for multi-sound television - Google Patents
Second audio signal detecting device for multi-sound television Download PDFInfo
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- KR890008299Y1 KR890008299Y1 KR2019860004256U KR860004256U KR890008299Y1 KR 890008299 Y1 KR890008299 Y1 KR 890008299Y1 KR 2019860004256 U KR2019860004256 U KR 2019860004256U KR 860004256 U KR860004256 U KR 860004256U KR 890008299 Y1 KR890008299 Y1 KR 890008299Y1
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- transistor
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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
- H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.
본 고안은 구미 및 미주지역에서 방송되고 있는 음성 다중 텔레비젼 신호 수신용 텔레비젼(TV)에 관한 것으로써, 특히 제2음성 신호 겸출 장치에 관한 것이다.The present invention relates to a television (TV) for receiving audio multi-TV signals broadcasted in Europe and the Americas, and more particularly, to a second audio signal combining apparatus.
종래의 제2음성출 장치는 제2음성 신호를 검출할때 해당채널이 방송중이 아니면 즉 텔레비젼 신호가 없는 채널인 경우에 잡음 신호에 의하여 제2음성 신호가 있는 것처럼 검출회로가 오작동하고, 제2음성 신호 검출장치가 이러한 무신호 채널에서 오작동을 방지하기 위하여 별도의 제어 장치가 제안된 바 있으나 그 구성소자가 집적회로등 다수개의 구성소자를 필요로 할뿐 아니라 조정개소가 많으며, 회로가 복잡하여, 제조원가의 상승요인이 됨과 동시에 조립 작업율이 떨어진다는 단점이 있다.In the conventional second voice output device, when the second voice signal is detected, the detection circuit malfunctions as if the second voice signal is caused by the noise signal when the corresponding channel is not on the air, i.e., the channel does not have a television signal. Although a separate control device has been proposed to prevent a malfunction of a voice signal detection device in such a non-signal channel, the component requires many components such as an integrated circuit, and there are many adjustment points. In addition, there is a disadvantage in that the assembly work rate is lowered as well as an increase in manufacturing cost.
본 고안은 이러한 종래의 단점을 해결하도록 공진회로를 결합시켜 잡음주파수대의 존재유무로서 제2음성 신호검출장치를 안전히 작동시키도록 하므로써 구성이 간단하면서도 무신호 채널에서의 오동작이 방지되며, 제조원가를 낮춤과 동시에 조립작업율이 향상되는 음성다중 텔레빈젼용 제2음성 신호 검출장치를 제공하는 것을 목적으로 하며 이하 첨부된 도면을 참조하면서 본 고안의 장치의 구성, 작용 효과를 설명하면 다음과 같다.The present invention combines a resonant circuit to solve the above-mentioned drawbacks, thereby safely operating the second voice signal detection device in the presence or absence of a noise frequency band, thereby preventing malfunction in a non-signal channel and reducing manufacturing costs. In addition, the object of the present invention is to provide a second voice signal detection device for voice multi-television that improves the assembly operation rate.
제1도를 참조하며 본 고안 장치의 구성은 제2음성 신호 입력단자(1)를 저항(R1),콘덴서(C1), 바이어스 저항(R2~R6), 코일(L1)콘덴서(C2)로된 공진기(2), 콘덴서(C3)저항 (R7)로 된 적분기(3)및 트랜지스터(Q1,Q2)를 포함하는 공진회로(가)를 통하여 에미터 접지된 출력트랜지스터(Q3)의 베이스에 연결하며, 제2음성 신호 반송파 입력(4)을 다이오드(D1,D2)및 콘덴서(C4,C5)로 구성된 검파기(5)와 저항(R9)및 콘덴서(C6)로 구성된 적분기(6)를 통하여 에미터 접지된 트랜지스터(Q4)의 베이스에 연결하고, 트랜지스터(Q4)의 콜렉터를 다이오드(D3)를 통하여 출력 트랜지스터(Q3)의 베이스에 연결하여된 것으로써 이러한 본 고안 장치의 작용효과를 각각의 경우에 비추어 설명하자면 무신호 채널이 선택되어 제2음성 신호 입력단자(1)에 잡음이 인가될때에는 잡음이 트랜지스터(Q1)에 의하여 증폭됨과 동시에 공진기(2)에서 공진되어 (대략 1.5fH)의 최대 출력이 발생되므로 트랜지스터(Q2)가 도통되고 이때의 잡음신호가 적분기(3)에서 적분되어 출력트랜지스터 (Q3)가 온되므로 출력단자(7)는 접지전위가 되어 출력이 없게 된다.Referring to FIG. 1, the device of the present invention includes a second audio signal input terminal 1 having a resistor R 1 , a capacitor C 1 , a bias resistor R 2 to R 6 , and a coil L 1 . Emitter grounded through a resonator circuit comprising a resonator 2 of (C 2 ), an integrator (3) of capacitor (C 3 ) resistor (R 7 ) and transistors (Q 1 , Q 2 ) The second audio signal carrier input 4 is connected to the base of the output transistor Q 3 , and the detector 5 and resistor R 9 comprising a diode D 1 , D 2 and a capacitor C 4 , C 5 . ) and capacitor (C 6), an output transistor (Q 3 to the collector of through the integrator 6, an emitter connected to the base of the grounding transistor (Q 4) and a transistor (Q 4) consisting of a via a diode (D 3) In this case, when the noiseless channel is selected and the noise is applied to the second audio signal input terminal 1, the effect of the device of the present invention is explained in each case. Soon as the noise is amplified by the transistor (Q 1) is at the same time the resonance in the resonator (2) since the maximum output of the (approximately 1.5fH) occurs, the transistor (Q 2) is conductive for the noise signal of this case is integrated in the integrator (3) Since the output transistor Q 3 is turned on, the output terminal 7 becomes the ground potential and there is no output.
그리고 정상채널이 선택되어 제2음성 신호 입력단자(1)에 제2음성 신호가 인가되면 제2음성 신호는 가청 주파수인 1.0fH이하의 신호가 되므로 트랜지스터(Q1)에서 일단 증폭이 되나 공진기(2)에서의 공진주파수(1.6H)보다 낮으므로 트랜지스터(Q2)를 도통시키지 못하고 출력트랜지스터(Q3)도 도통시키지 못한다.And when the normal channel is selected, a second audio signal is applied to the second audio signal input terminal 1, a second audio signal is a signal of less than the audio frequency 1.0fH once amplified by the transistor (Q 1), but the resonator ( Since it is lower than the resonant frequency (1.6H) in 2), the transistor Q 2 is not conductive and the output transistor Q 3 is also not conductive.
그러므로 출력단자(7)에는 전원(B+)이 공급된다.Therefore, the power supply B + is supplied to the output terminal 7.
또한 무신호 채널의 선택시에는 제2음성신호 반송파 입력(4)에는 잡음신호가 인가되어 잡음신호는 검파기(5)에서 검파되고 적분기(6)에서 적분되므로 트랜지스터(Q4)가 도통되어 저항(R10)과 다이오드(D3)를 통하여 전원(B＋)전압이 출력트랜지스터(Q3)의 베이스가 인가되지 못한다.In addition, when the non-signal channel is selected, a noise signal is applied to the second voice signal carrier input 4 so that the noise signal is detected by the detector 5 and integrated by the integrator 6, so that the transistor Q 4 is conducted so that the resistance ( The base of the output transistor Q 3 is not applied to the power supply B + voltage through R 10 ) and the diode D 3 .
그리고 제2음성신호가 제2음성신호 입력단자(1)에 인가될때에는 동시에 제2음성 반송파 신호가 입력(4)에 인가되어 잡음신호의 입력시와 마찬가지로 트랜지스터(Q4)를 도통시켜 출력트랜지스터(Q3)가 오프 상태로 유지되어 출력단자(7)에는 전원(B+)이 저항(R8)을 통하여 공급되는 것이다.When the second voice signal is applied to the second voice signal input terminal 1, the second voice carrier signal is simultaneously applied to the input 4 to conduct the transistor Q 4 as in the input of the noise signal. (Q 3 ) remains off, so that power B + is supplied to the output terminal 7 through the resistor R 8 .
음성신호주 채널 수신시에는 입력(1)에는 입력신호가 공급되지 않음과 동시에 제2음성신호 반송파 입력(4)에도 신호가 공급되지 않아 출력 트랜지스터(Q3)는 도통되어 출력단자(7)는 접지 전위가 나타난다.When the audio signal main channel is received, the input signal is not supplied to the input 1 and the signal is not supplied to the second audio signal carrier input 4, so that the output transistor Q 3 is turned on so that the output terminal 7 Ground potential appears.
이상에서 설명된 바와 같이 본 고안 장치에 의하면 제2음성 신호를 정확하게 검출할 수 있을뿐 아니라 무신호 채널을 수신하는 경우에도 공진회로가 잡음이 제2음성 시노 반송파로 오작동 하지 않고 그 구성이 간단하여 제조원가를 낮출수 있음과 동시에 조립작업율이 향상된다.As described above, the device of the present invention can not only accurately detect the second audio signal but also the resonance circuit does not malfunction as the second voice sino carrier even when receiving a no-signal channel. The manufacturing cost can be lowered and the assembly rate is improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860004256U KR890008299Y1 (en) | 1986-04-03 | 1986-04-03 | Second audio signal detecting device for multi-sound television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860004256U KR890008299Y1 (en) | 1986-04-03 | 1986-04-03 | Second audio signal detecting device for multi-sound television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870017552U KR870017552U (en) | 1987-11-30 |
| KR890008299Y1 true KR890008299Y1 (en) | 1989-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860004256U KR890008299Y1 (en) | 1986-04-03 | 1986-04-03 | Second audio signal detecting device for multi-sound television |
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| Country | Link |
|---|---|
| KR (1) | KR890008299Y1 (en) |
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1986
- 1986-04-03 KR KR2019860004256U patent/KR890008299Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR870017552U (en) | 1987-11-30 |
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