KR910002838Y1 - Sap broadcasting indication circuit - Google Patents

Sap broadcasting indication circuit Download PDF

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Publication number
KR910002838Y1
KR910002838Y1 KR2019850007925U KR850007925U KR910002838Y1 KR 910002838 Y1 KR910002838 Y1 KR 910002838Y1 KR 2019850007925 U KR2019850007925 U KR 2019850007925U KR 850007925 U KR850007925 U KR 850007925U KR 910002838 Y1 KR910002838 Y1 KR 910002838Y1
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KR
South Korea
Prior art keywords
sap
input terminal
gate
resistor
light emitting
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KR2019850007925U
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Korean (ko)
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KR870001337U (en
Inventor
김남호
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주식회사 금성사
허신구
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Priority to KR2019850007925U priority Critical patent/KR910002838Y1/en
Publication of KR870001337U publication Critical patent/KR870001337U/en
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Publication of KR910002838Y1 publication Critical patent/KR910002838Y1/en

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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
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
    • G06F11/324—Display of status information
    • G06F11/325—Display of status information by lamps or LED's
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

내용 없음.No content.

Description

SAP 방송 표시회로SAP Broadcast Display Circuit

제1도는 본 고안의 표시 회로도.1 is a display circuit diagram of the present invention.

제2도는 제1도 각 부의 파형도.2 is a waveform diagram of each part of FIG.

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

1 : SAP 검파용 톱니파 발생회로 NOR1, NOR2: 노아게이트1: Saw tooth generating circuit for SAP detection NOR 1 , NOR 2 : Noah gate

I1, I2: 인버터 LED1: 발광 다이오드I 1 , I 2 : Inverter LED 1 : Light Emitting Diode

C1: 콘덴서 D1, D2: 다이오드C 1 : condenser D 1 , D 2 : diode

R1-R3: 저항 A : SAP캐리어 신호 입력단자R 1 -R 3 : Resistor A: SAP carrier signal input terminal

본 고안은 방송국에서 SAP(Second Audio Program)방송을 하면 발광다이오드가 점등되어 이를 표시하게 한 성다중방송 텔레비젼 수상기의 SAP방송 표시회로에 관한 것이다.The present invention relates to an SAP broadcast display circuit of a sex multicast television receiver that emits a light emitting diode when it is broadcasted by a broadcast station (SAP).

종래에도 여러 가지의 SAP방송 표시회로가 있으나 그들의 대부분 회로구성이 매우 복잡하고, 또한 동작이 원활하지 못한 결함이 있었다.Although there are various SAP broadcast display circuits in the past, most of them have defects in which the circuit configuration is very complicated and the operation is not smooth.

본 고안은 이와 같은 종래의 결함을 감안하여, 동작이 원활하면서 그 구성이 간단한 회로를 안출한 것으로, 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.The present invention in view of the conventional defects, such as a smooth operation and devised a simple circuit configuration, which will be described in detail by the accompanying drawings as follows.

제1도에 도시한 바와같이 SAP 캐리어신호 입력단자(A) 및 SAP검파용 톱니파 발생회로(1)의 출력단자를 노아게이트(NOR1)의 입력단자에 접속함과 동시에 인버터(I1)(I2)를 각기 통해 노아게이트(NOR2)의 입력단자에 접속하여 그 노아게이트(NOR1)(NOR2)의 출력측을 다이오드(D1)(D2)를 통해 콘덴서(C1)에서 접속하고, 그 접속점을 저항(R1)을 통해 저항(R2) 및 콜렉터가 발광다이오드(LED1), 저항(R3)을 통해 콘덴서(C1)에 접속하고, 그 접속점을 저항(R1)을 통해 저항(R2) 및 콜렉터가 발광다이오드(LED1), 저항(R3)을 통해 전원(Vcc)에 접속된 트랜지스터(TR1)의 베이스에 접속하여 구성한 것으로, 상기에서 저항(R1)(R2)의 값을 노아게이트(NOR1)(NOR2)에서 모두 펄스호가 출력되어 콘덴서(C1)에 충전될 경우에만 트랜지스터(TR1)의 베이스에 바이어스 전압이 인가되게 설정한다.As shown in FIG. 1, the SAP carrier signal input terminal A and the output terminal of the SAP detection sawtooth generator circuit 1 are connected to the input terminal of the NOA gate NOR 1 and the inverter I 1 ( I 2) of each via to connect to the input terminal of the NOR gate (NOR 2) connected in the NOR gate (NOR 1) (the diode of the output side of the NOR 2) (D 1) (condenser through D 2) (C 1) The connection point is connected via the resistor R 1 to the resistor R 2 and the collector through the light emitting diode LED 1 and the resistor R 3 to the capacitor C 1 , and the connection point is connected to the resistor R 1. The resistor R 2 and the collector are connected to the base of the transistor TR 1 connected to the power supply Vcc through the light emitting diode LED 1 and the resistor R 3 . 1) (R 2) value of the NOR gate (NOR 1) (NOR 2) is an output pulse arc in both the capacitor (C 1) the bias to the base of the transistor (TR 1) only when the charge in the former The sets to be applied.

이와 같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effect of the present invention configured in this way in detail as follows.

방송국에서 SAP방송을 하면, SAP캐리어 신호 입력단자 (A)에 제2도의 (가)에 도시한 바와같이 SAP캐리어 신호가 입력되어 노아게이트(NOR1)의 일측입력단자에 인가됨과 동시에 인버터(I1)를 통해 반전되어 노아게이트(NOR2)의 타측입력단자에 인가되고, 이때 SAP검파용 톱니파 발생회로(1)의 출력단자에는 제2도의(나)에 도시한 바와같이 톱니파 신호가 출력되어 노아게이트(NOR1)의 타측입력단자에 인가됨과 동시에 인버터(I2)를 통해 반전되어 노아게이트(NOR2)의 일측입력단자에 인가되므로 노아게이트(NOR1) 및 (NOR2)의 출력측에는 제2도의 (다) 및 (라)에 도시한 바와같이 펄스신호가 출력되고 그 출력된 펄스신호는 다이오드(D1)(D2)를 통해 제2도의 (마)에 도시한 바와같이 서로 합쳐진후 콘덴서(C1)에 충전된다.When the broadcast station performs SAP broadcast, the SAP carrier signal is input to the SAP carrier signal input terminal (A) as shown in FIG. 2A, is applied to one input terminal of the NOA gate NOR 1 , and the inverter I 1 ) is inverted and applied to the other input terminal of the NOA gate (NOR 2 ), and at this time, the sawtooth wave signal is output to the output terminal of the SAP detection sawtooth generating circuit 1 as shown in FIG. soon as applied to the other input terminal of the NOR gate (NOR 1) at the same time be inverted via an inverter (I 2) NOR gate (NOR 2) so applied to one side input terminal of the NOR gate (NOR 1) and (NOR 2) output side of As shown in (C) and (D) of FIG. 2, a pulse signal is output, and the output pulse signals are combined with each other as shown in (E) of FIG. 2 through diodes D 1 and D 2 . The capacitor C 1 is then charged.

따라서, 콘덴서(C1)의 양단 전압은 제2도의(바)에 도시한 바와같이 일정크기를 갖는 직류 전압이되고, 그 직류전압은 저항(R1)(R2)로 분할되어 트랜지스터(TR1)의 베이스에 바이어스 전압을 인가하게 되므로 트랜지스터(TR1)는 온되어 전원(Vcc)이 저항(R3) 및 발광다이오드(LED1) 트랜지스터(TR1)를 통해 접지로 흐르게 되고, 이에 따라 발광다이오드(LED1)가 점등되어 방송국에서 SAP방송을 하고 있음을 표시하게 된다.Accordingly, the voltage across the capacitor C 1 becomes a direct current voltage having a constant magnitude as shown in FIG. 2 (bar), and the direct current voltage is divided by the resistors R 1 (R 2 ) and the transistor TR Since the bias voltage is applied to the base of the transistor 1 ), the transistor TR 1 is turned on so that the power supply Vcc flows to the ground through the resistor R 3 and the light emitting diode LED 1 transistor TR 1 . The LED (LED 1 ) is turned on to indicate that the broadcasting station is broadcasting SAP.

그리고, 방송국에서 SAP 방송을 하지 않으면 SAP캐리어신호 입력단자(A)에는 아무 신호도 입력되지 않아 노아게이트(NOR1)의 일측입력단자에 저전위가 인가되고, 또한 그 저전위는 인버터(I1)를 통해 고전위로 반전되어 노아게이트(NOR2)의 타측입력단자에 인가되므로 노아게이트(NOR1)의 출력측에는 그의 타측입력단자에 인가되는 제2도의 (나)에 도시한 톱니파 신호에 의해 제2도의 (다)에 도시한 바와 KRX이 펄스신호가 출력되나 노아게이트(NOR2)의 출력측에는 저전위가 출력된다.If no SAP broadcast is made by the broadcasting station, no signal is input to the SAP carrier signal input terminal A, and a low potential is applied to one input terminal of the NOA gate NOR 1 , and the low potential is applied to the inverter I 1. ) it is inverted to the high potential via a second by a saw tooth signal shown in NOR gate (NOR 2), the second degree (B) is applied so applied to the other input terminal of the output side of the NOR gate (NOR 1) on its other input terminal of the As shown in Fig. 2C, the KRX outputs a pulse signal, but the low potential is output to the output side of the NOA gate NOR 2 .

따라서, 노아게이트(NOR1)에서 출력된 펄스 전압이 다이오드(D1)를 통해 콘덴서(C1)에 충전되나 그 충전된 전압이 낮아 저항(R1)(R2)으로 분할된 전압이 트랜지스터(TR1)의 베이스에 충분한 바이어스 전압을 인가하지 못하므로 트랜지스터(TR1)는 오프되어 발광다이오드(LED1)가 점등되지 않게 된다.Therefore, the pulse voltage output from the NOR gate NOR 1 is charged to the capacitor C 1 through the diode D 1 , but the voltage divided by the resistor R 1 (R 2 ) is low because the charged voltage is low. Since a sufficient bias voltage is not applied to the base of TR 1 , the transistor TR 1 is turned off so that the light emitting diode LED 1 is not turned on.

이상에서 설명한 바와같이 본고안은 방송국에서 SAP방송을 하면 발광다이오드(LED1)가 점등되어 이를 표시하는 회로로 그 동작이 매우 원활하고, 또한 회로구성이 간단하여 쉽게 구성할 수 있는 이점이 있다.As described above, the present invention is a circuit for displaying a light emitting diode (LED 1 ) is turned on when the SAP broadcasting in the broadcast station, the operation is very smooth, and the circuit configuration has an advantage that can be easily configured.

Claims (1)

SAP방송시 발광다이오드(LED1)를 점등시켜 이를 표시하는 SAP방송 표시회로에 있어서, SAP캐리어신호 입력단자(A) 및 SAP검파용 톱니파 발생회로(1)의 출력단자를 노아게이트(NOR1)의 입력단자에 접속함과 동시에 인버터(I1)(I2)를 통해 노아게이트(NOR2)의 입력단자에 접속하여, 그 노아게이트(NOR1)(NOR2)의 출력측을 다이오드(D1)(D2) 및 접지 콘덴서(C1), 저항(R1)을 통해 저항(R2) 및 콜렉터에 발광다이오드(LED1)이 접속된 트랜지스터(TR1)의 베이스에 접속하여 구성함을 특징으로 하는 SAP 방송 표시회로.In an SAP broadcast display circuit which lights up and displays a light emitting diode (LED 1 ) during SAP broadcast, the SAP carrier signal input terminal (A) and the output terminal of the SAP detection sawtooth generator circuit (1) are noar gates (NOR 1 ). Is connected to the input terminal of the NOR gate NOR 2 through the inverter I 1 (I 2 ) and the output side of the NOR 1 NOR 2 is connected to the diode D 1. (D 2 ) and ground capacitor (C 1 ) and resistor (R 1 ) to connect to the base of transistor (TR 1 ) with light emitting diode (LED 1 ) connected to resistor (R 2 ) and collector. SAP broadcast display circuit characterized in that.
KR2019850007925U 1985-06-28 1985-06-28 Sap broadcasting indication circuit KR910002838Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850007925U KR910002838Y1 (en) 1985-06-28 1985-06-28 Sap broadcasting indication circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850007925U KR910002838Y1 (en) 1985-06-28 1985-06-28 Sap broadcasting indication circuit

Publications (2)

Publication Number Publication Date
KR870001337U KR870001337U (en) 1987-02-20
KR910002838Y1 true KR910002838Y1 (en) 1991-05-02

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Application Number Title Priority Date Filing Date
KR2019850007925U KR910002838Y1 (en) 1985-06-28 1985-06-28 Sap broadcasting indication circuit

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KR870001337U (en) 1987-02-20

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