KR950010537A - High Frequency Signal Modulator - Google Patents

High Frequency Signal Modulator Download PDF

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Publication number
KR950010537A
KR950010537A KR1019930019449A KR930019449A KR950010537A KR 950010537 A KR950010537 A KR 950010537A KR 1019930019449 A KR1019930019449 A KR 1019930019449A KR 930019449 A KR930019449 A KR 930019449A KR 950010537 A KR950010537 A KR 950010537A
Authority
KR
South Korea
Prior art keywords
signal
level
high frequency
audio signal
audio
Prior art date
Application number
KR1019930019449A
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Korean (ko)
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KR970006559B1 (en
Inventor
류우태
Original Assignee
배순훈
대우전자 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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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930019449A priority Critical patent/KR970006559B1/en
Publication of KR950010537A publication Critical patent/KR950010537A/en
Application granted granted Critical
Publication of KR970006559B1 publication Critical patent/KR970006559B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40—Modulation circuits

Abstract

본 발명은 입력되는 음성신호의 레벨업 현상으로 인해 음성신호가 영상신호에 미치는 간섭을 방지할 수 있도록 한 고주파신호 변조장치에 관한 것으로, 입력되는 음성신호에 대해 특정주파수 대역을 강조하기에 앞서 그 레벨을 설정된 소정레벨, 즉 허용 입력레벨로 자동 조절하기 위한 자동 레벨제어수단을 구비함으로써, 음성신호가 영상신호에 미치는 간섭이 배제되어 화질열화가 방지되도록 한 것이다.The present invention relates to a high frequency signal modulation device that can prevent the interference of the audio signal to the video signal due to the level-up phenomenon of the input audio signal, prior to emphasizing a specific frequency band for the input audio signal. By providing automatic level control means for automatically adjusting the level to a predetermined predetermined level, that is, an allowable input level, interference of the audio signal to the video signal is eliminated to prevent deterioration of image quality.

Description

고주파신호 변조장치High Frequency Signal Modulator

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

제2도는 본 발명에 따른 고주파신호 변조장치의 블럭 구성도.2 is a block diagram of a high frequency signal modulation device according to the present invention.

Claims (2)

특정 주파수대역을 미리 강조하는 프리엠퍼시스부와, 음성신호의 주파수변조를 위한 FM 변조부와, 음성중간 방송주파수를 생성하는 중간 반송주파수 생성부와, 영상신호의 진폭변조를 위한 AM 변조부와, 영상 및 음성 채널주파수를 생성하는 반송주파수 생성부와, 음성 고주파신호와 영상반송파를 혼합하기 위한 음성 RF 신호 믹서부를 구비한 텔레비젼 방송시스템의 고주파신호 변조장치에 있어서, 상기 프리엠퍼시스부의 전단에 접속되고, 상기 음성신호를 설정된 소정레벨로 자동 조절하는 자동 레벨제어부(70)를 더욱 포함하여 이루어진 것을 특징으로 하는 고주파신호 변조장치.A pre-emphasis unit for emphasizing a specific frequency band in advance, an FM modulator for frequency modulation of an audio signal, an intermediate carrier frequency generator for generating an intermediate voice frequency, an AM modulator for amplitude modulation of a video signal, and A high frequency signal modulation apparatus of a television broadcasting system, comprising: a carrier frequency generator for generating video and audio channel frequencies; and an audio RF signal mixer for mixing audio high frequency signals and video carriers. And an automatic level control unit (70) which is connected and automatically adjusts the audio signal to a predetermined predetermined level. 제1항에 있어서, 상기 설정된 소정레벨은 음성신호의 허용 입력레벨과 동일 레벨인 것을 특징으로 하는 고주파신호 변조장치.The high frequency signal modulating device according to claim 1, wherein the set predetermined level is the same level as an allowable input level of the audio signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930019449A 1993-09-23 1993-09-23 Modulator of high frequency signal KR970006559B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930019449A KR970006559B1 (en) 1993-09-23 1993-09-23 Modulator of high frequency signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930019449A KR970006559B1 (en) 1993-09-23 1993-09-23 Modulator of high frequency signal

Publications (2)

Publication Number Publication Date
KR950010537A true KR950010537A (en) 1995-04-28
KR970006559B1 KR970006559B1 (en) 1997-04-29

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ID=19364364

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930019449A KR970006559B1 (en) 1993-09-23 1993-09-23 Modulator of high frequency signal

Country Status (1)

Country Link
KR (1) KR970006559B1 (en)

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Publication number Publication date
KR970006559B1 (en) 1997-04-29

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