KR940010548A - Radio Frequency Transmitter of Radio - Google Patents
Radio Frequency Transmitter of Radio Download PDFInfo
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- voice
- comparator
- output
- voice signal
- Prior art date
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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
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)
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 |
Family
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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1992
- 1992-10-30 KR KR1019920020159A patent/KR940010548A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
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WITN | Withdrawal due to no request for examination |