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KR970003299A - High frequency modulator with frequency division circuit - Google Patents

High frequency modulator with frequency division circuit Download PDF

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Publication number
KR970003299A
KR970003299A KR1019950014963A KR19950014963A KR970003299A KR 970003299 A KR970003299 A KR 970003299A KR 1019950014963 A KR1019950014963 A KR 1019950014963A KR 19950014963 A KR19950014963 A KR 19950014963A KR 970003299 A KR970003299 A KR 970003299A
Authority
KR
South Korea
Prior art keywords
modulator
signal
frequency
carrier
audio
Prior art date
Application number
KR1019950014963A
Other languages
Korean (ko)
Inventor
이종진
Original Assignee
이형도
삼성전기 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.)
Filing date
Publication date
Application filed by 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950014963A priority Critical patent/KR970003299A/en
Publication of KR970003299A publication Critical patent/KR970003299A/en

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  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

본 발명은 입력된 영상신호와 음성신호를 RF 신호로 변조시키는 고주파 변조기에 관한 것으로, 특히 음성반송파 발진기의 반송주파수를 분주하여 테스트 신호를 발생시키는 분주회로를 내장하여 고주파 변조기 회로의 집적화가 가능하도록 하고, 정확한 테스트 신호를발생시키도록 한 고주파 변조기에 관한 것이다.The present invention relates to a high frequency modulator for modulating an input video signal and an audio signal into an RF signal, and in particular, by integrating a frequency divider circuit for generating a test signal by dividing a carrier frequency of an audio carrier oscillator. And a high frequency modulator for generating an accurate test signal.

본 발명의 기술적인 구성은 영상입력신호(Vin)를 변조하는 AM변조기(12)와 음성입력 신호(Ain)를 변조하는 FM 변조기(14)와, AM 변조기(12)에 영상반송파를 입력시키는 영상반송파 발전기(17)와 FM 변조기(14)에 음성반송파를 입력시키는 음성반송파 발전기(16)와 변조된 음성신호를 영상반송 주파수로 변환하는 주파수 변환기(15)와 변조된 영상신호와 음성신호를 혼합하는 혼합기(13)로 구비된 고주파 변조기에 음성반송파 발전기(16)의 반송주파수를 입력받아 테스트 신호를 AM 변조기(12)에 출력하는 분주회로를 구비함에 의한다.The technical configuration of the present invention is an AM modulator 12 for modulating a video input signal Vin, an FM modulator 14 for modulating an audio input signal Ain, and an image carrier for inputting an image carrier to the AM modulator 12. The carrier generator 17 and the FM modulator 14 mix a voice carrier generator 16 for inputting a voice carrier, a frequency converter 15 for converting a modulated voice signal to a video carrier frequency, and a modulated video signal and a voice signal. By the high frequency modulator provided with the mixer 13 to receive the carrier frequency of the voice carrier generator 16 is provided with a frequency divider circuit for outputting a test signal to the AM modulator 12.

Description

주파수 분주회로를 내장한 고주파 변조기High frequency modulator with frequency division circuit

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

제2도는 본 발명에 따른 고주파 변조기의 블럭 구성도이다.2 is a block diagram of a high frequency modulator according to the present invention.

Claims (1)

영상입력신호(Vin)를 변조하는 AM 변조기(12)와, 음성 입력신호(Ain)를 변조하는 FM 변조기(14)와, AM 변조기(12)에 영상반송 주파수를 발진시키는 영상반송파 발진기(17)와 FM 변조기(14)에 음성 반송 주파수를 발진시키는 음성반송파 발진기(16)와, FM 변조기(14)에서 변조된 음성신호를 영상반송 주파수로 변환하는 주파수 변환기(15)와 변조된 영상신호와 음성신호를 가산하는 가산기로 구비된 고주파 변조기에 있어서, 음성반송파 발진기의 반송주파수를 분주하여 발생한 테스트 신호를 AM 변조기(12)에 입력하는 주파수 분주회로를 내장하는 것을 특징으로 하는 고주파 변조기.AM modulator 12 for modulating the video input signal Vin, FM modulator 14 for modulating the audio input signal Ain, and image carrier oscillator 17 for oscillating the image carrier frequency on the AM modulator 12 And an audio carrier oscillator 16 for oscillating an audio carrier frequency to the FM modulator 14, a frequency converter 15 for converting an audio signal modulated by the FM modulator 14 to an image carrier frequency, and a modulated video signal and audio. A high frequency modulator provided with an adder for adding a signal, said high frequency modulator comprising a frequency divider circuit for inputting a test signal generated by dividing a carrier frequency of an audio carrier oscillator into an AM modulator (12). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950014963A 1995-06-07 1995-06-07 High frequency modulator with frequency division circuit KR970003299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950014963A KR970003299A (en) 1995-06-07 1995-06-07 High frequency modulator with frequency division circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950014963A KR970003299A (en) 1995-06-07 1995-06-07 High frequency modulator with frequency division circuit

Publications (1)

Publication Number Publication Date
KR970003299A true KR970003299A (en) 1997-01-28

Family

ID=66525469

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950014963A KR970003299A (en) 1995-06-07 1995-06-07 High frequency modulator with frequency division circuit

Country Status (1)

Country Link
KR (1) KR970003299A (en)

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