KR940010548A - Radio Frequency Transmitter of Radio - Google Patents

Radio Frequency Transmitter of Radio Download PDF

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Publication number
KR940010548A
KR940010548A KR1019920020159A KR920020159A KR940010548A KR 940010548 A KR940010548 A KR 940010548A KR 1019920020159 A KR1019920020159 A KR 1019920020159A KR 920020159 A KR920020159 A KR 920020159A KR 940010548 A KR940010548 A KR 940010548A
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KR
South Korea
Prior art keywords
signal
voice
comparator
output
voice signal
Prior art date
Application number
KR1019920020159A
Other languages
Korean (ko)
Inventor
최성민
Original Assignee
백중영
금성통신 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 백중영, 금성통신 주식회사 filed Critical 백중영
Priority to KR1019920020159A priority Critical patent/KR940010548A/en
Publication of KR940010548A publication Critical patent/KR940010548A/en

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Abstract

본 발명은 무전기의 송신주파수 송출장치에 관한 것으로서, 특히 통화동작시 음성감지회로와 스위치회로에 의한 자동적인 음성신호 송출동작을 가능하게 하여 PTT스위치를 일일이 누르는 번거로움을 없애도록 하는 무전기의 자동송신 주파수 송출장치에 관한 것이다.The present invention relates to a transmission frequency transmission apparatus of a radio, and in particular, the automatic transmission of the radio to eliminate the hassle of pressing the PTT switch by enabling the automatic voice signal transmission operation by the voice detection circuit and the switch circuit during the call operation. The present invention relates to a frequency transmitter.

본 발명은 마이크로부터 입력되는 음성신호를 기준신호와 비교출력하는 비교기와, 상기 비교기에 의해 비교출력된 디지탈음성출력 신호를 기준신호와 비교하여 음성신호가 입력되면 로우레벨신호를 출력하는 비교기를 갖추어 상기 마이크로부터 입력되는 음성신호를 감지하는 음성감지회로와, 상기 음성신호감지회로의 비교기를 통해 출력된 레벨신호를 반전시키는 인버터와, 상기 인버터에서 출력되는 레벨신호에 따라 온/오프제어되는 NPN트랜지스터를 갖추어 음성감지회로에서 통과되는 신호의 상태에 따라 온/오프되어 PTT스위치를 제어하는 스위치회로부를 구비한다.The present invention includes a comparator for comparing and outputting a voice signal input from a microphone with a reference signal, and a comparator for outputting a low level signal when a voice signal is input by comparing the digital voice output signal compared and output by the comparator with a reference signal. A voice sensing circuit for sensing a voice signal input from the microphone, an inverter for inverting a level signal output through a comparator of the voice signal sensing circuit, and an NPN transistor controlled on / off according to the level signal output from the inverter In accordance with the state of the signal passing through the voice sensing circuit is provided with a switch circuit for controlling the PTT switch.

Description

무전기의 자동송신주파수 송출장치Radio Frequency Transmitter of Radio

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 자동송신주파수 송출장치를 채용한 무전기를 도시한 블록구성도,2 is a block diagram showing a radio employing the automatic transmission frequency transmission device of the present invention,

제3도는 본 발명의 자동송신주파수 송출장치를 도시한 회로도이다.3 is a circuit diagram showing an automatic transmission frequency transmitting device of the present invention.

Claims (3)

무전기에 있어서, 송신음성신호를 입력하는 마이크(15), 상기 입력된 송신음성신호를 증폭시키는 음성신호 증폭부(16), 무전주파수를 발생하는 크리스탈신호발생부(17), 상기 음성신호 증폭부(16)에서 증폭된 음성신호와 상기 크리스탈신호발생부(17)에서 발생하는 무전주파수를 혼잡하여 변조시키는 변조부(18), 변조부(18)에서 변조된 송신신호를 증폭시켜주는 송신신호 증폭부(19), 송신신호 증폭부(19)를 온/오프제어하는 PTT스위치(PTT11), 마이크(15)로부터 입력되는 음성신호를 감지하는 음성감지회로(20)와, 음성감지회로(20)에서 통과되는 신호의 상태에 따라 온/오프되어 상기 PTT스위치(PTT11)를 제어하는 스위치회로부(21)를 구비하는 것을 특징으로 하는 무전기의 자동송신주파수 송출장치.In the radio, a microphone 15 for inputting a transmission voice signal, a voice signal amplifier 16 for amplifying the input voice signal, a crystal signal generator 17 for generating a radio frequency, and the voice signal amplifier A modulator 18 for congesting and modulating the voice signal amplified at 16 and the radio frequency generated by the crystal signal generator 17, and amplifying a transmit signal for amplifying the transmitted signal modulated by the modulator 18; 19, a PTT switch (PTT11) for controlling the transmission signal amplification unit 19 on / off, a voice sensing circuit 20 for detecting a voice signal input from the microphone 15, and a voice sensing circuit 20 And a switch circuit unit (21) for controlling the PTT switch (PTT11) on / off according to the state of a signal passing through. 제1항에 있어서, 상기 음성감지회로(20)는 마이크(15)를 통해 입력되는 음성신호를 기준신호(Vref1)와 비교출력하는 비교기(Comp1)와, 비교기(Comp1)에 의해 비교출력된 음성출력 신호를 기준신호(Vref2)와 비교 출력하는 비교기(Comp2)를 구비하는 것을 특징으로 하는 무전기의 자동송신주파수 송출장치.According to claim 1, The voice detection circuit 20 is a comparator Comp1 for comparing and outputting the voice signal input through the microphone 15 and the reference signal (Vref 1 ), and is compared and output by the comparator (Comp1) And a comparator (Comp2) for comparing and outputting a voice output signal with a reference signal (Vref 2 ). 제1항에 있어서, 상기 스위치회로부(21)는 상기 음성신호감지회로(20)의 비교기(Comp2)를 통해 출력된 레벨 신호를 반전시키는 인버터(NOT1)와, 인버터(NOT1)에서 출력되는 레벨신호에 따라 온/오프제어되는 NPN트랜지스터(TR1)를 구비하는 것을 특징으로 하는 무전기의 자동송신주파수 송출장치.The inverter circuit of claim 1, wherein the switch circuit unit 21 includes an inverter NOT1 for inverting the level signal output through the comparator Comp2 of the voice signal detection circuit 20, and a level signal output from the inverter NOT1. And an NPN transistor (TR1) on / off controlled according to the apparatus. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020159A 1992-10-30 1992-10-30 Radio Frequency Transmitter of Radio KR940010548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020159A KR940010548A (en) 1992-10-30 1992-10-30 Radio Frequency Transmitter of Radio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020159A KR940010548A (en) 1992-10-30 1992-10-30 Radio Frequency Transmitter of Radio

Publications (1)

Publication Number Publication Date
KR940010548A true KR940010548A (en) 1994-05-26

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ID=67210525

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020159A KR940010548A (en) 1992-10-30 1992-10-30 Radio Frequency Transmitter of Radio

Country Status (1)

Country Link
KR (1) KR940010548A (en)

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