KR970068557A - Automatic audio compensation device and control method thereof - Google Patents

Automatic audio compensation device and control method thereof Download PDF

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Publication number
KR970068557A
KR970068557A KR1019960007004A KR19960007004A KR970068557A KR 970068557 A KR970068557 A KR 970068557A KR 1019960007004 A KR1019960007004 A KR 1019960007004A KR 19960007004 A KR19960007004 A KR 19960007004A KR 970068557 A KR970068557 A KR 970068557A
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KR
South Korea
Prior art keywords
output
audio signal
audio
gain
value
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Application number
KR1019960007004A
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Korean (ko)
Inventor
이남수
Original Assignee
구자홍
엘지전자 주식회사
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Publication date
Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019960007004A priority Critical patent/KR970068557A/en
Publication of KR970068557A publication Critical patent/KR970068557A/en

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Abstract

본 발명은 오디오 자동보상장치는, 방송국별 송신출력의 크기와 수신지역의 채널별 주파수 수신상태에 따라서 티브이 및 비디오의 튜너에서 감지하는 오디오 레벨이 달리 채널변경시마다 볼륨을 조절할 필요가 없도록 채널변경시 전, 후 상태를 판단하여 볼륨을 항상 일정하게 자동조절함으로써 사용자가 편안하게 티브이나 비디오를 시청할 수 있는 효과가 있다.According to the present invention, the audio automatic compensation apparatus is configured such that the audio level detected by the tuner of the TV and the video is different according to the size of the transmission output of each broadcasting station and the frequency reception state of each channel of the receiving area, The user can comfortably watch a movie or a video by automatically and constantly adjusting the volume by judging the state before and after.

Description

오디오 자동 보상 장치 및 그의 제어방법Automatic audio compensation device and control method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명에 의한 오디오 자동보상장치의 구성을 도시한 것.FIG. 2 shows a configuration of an automatic audio compensating apparatus according to the present invention. FIG.

Claims (2)

안테나를 통해 수신된 방송국 전파로부터 방송채널을 선국하면 오디오 및 영상신호를 중간주파 증폭하기 위한 IF검파/증폭기의 출력에서 오디오 신호를 추출하기 위한 제1필터와, 상기 제1필터의 출력으로 부터 베이스밴드 오디오신호를 만들기 위한 FM검파기와, 상기 FM컴파기의 출력으로부터 현재 출력레벨을 검출하기 위한 레벨센싱버퍼와, 상기 레벨센싱버퍼의 출력을 디지탈 값으로 변환하여 음성신호인지 음악신호인지를 판별하기 위한 제2아날로그/디지탈 변환기와, 상기 레벨센싱버퍼의 출력을 실시간으로 적분기 위한 적분기와, 적분기의 출력을 디지탈값으로 변환하기 위한 제1아날로그/디지탈 변환기와, 상기 제1 및 제2 아날로그/디지탈 변환기의 출력으로부터 평균값을 산출하고, 초기 셋팅을 위한 입력키, 리모콘 수신기의 입력결과에 따라 이득값을 조절하도록 제어하기 위한 마이크로 컴퓨터와, 상기 마이크로 컴퓨터의 출력을 아날로그 변환시키기 위한 디지탈/아날로그 변환기와, 상기 FM검파기로부 출력된 메인 오디오신호의 레벨을 조절하기 위한 자동레벨 제어기와, 상기 디지탈/아날로그 변환기의 출력에 따라 상기 메인 오디오 신호의 이득을 제어하기 위한 이득제어증폭기와, 상기 마이크로, 컴퓨터와 연결되어 이득값을 저장하며, 이득값 변경이 가능하도록 구성된 이이피름을 포함하여 구성된 것을 특징으로 하는 오디오 자동 보상 장치.A first filter for extracting an audio signal from an output of an IF detector / amplifier for amplifying an intermediate frequency of an audio signal and a video signal when a broadcast channel is selected from a broadcast wave received through an antenna; A level detection buffer for detecting a current output level from the output of the FM combiner, and a controller for converting the output of the level sensing buffer into a digital value to discriminate whether it is a voice signal or a music signal An integrator for integrally integrating the output of the level sensing buffer in real time, a first analog / digital converter for converting the output of the integrator into a digital value, and a second analog / The average value is calculated from the output of the converter, and the input key for the initial setting and the input result of the remote control receiver An automatic level controller for adjusting a level of a main audio signal output by the FM detector, and a controller for controlling the level of the main audio signal output from the FM detector, A gain control amplifier for controlling a gain of the main audio signal in accordance with an output of a digital / analog converter, and a differential filter connected to the microcomputer and the computer for storing a gain value and configured to be able to change a gain value Features an automatic audio compensation device. 사용자의 선택에 따라 선국된 채널의 볼륨이 셋팅되면 선국된 채널이 음악방송인지 음성방송인지를 검출하는 과정과, 검출결과에 따라 음악방송과 음성방송에 따른 각각의 오디오 출력 이득값(K1, K2)을 저장하는 과정과, 일정시간 후 채널이 변경되었는지 검출하여 변경되었으면 에프앰 검파된 오디오신호의 평균값(m)을 산출하는 과정과, 변경된 채널이 음악 방송인지 음성방송인지를 검출하여 음악방송이면 오디오 출력 이득값(K1)과 사익 오디오 신호의 평균값(m)이 같아지도록 오디오 이득값을 제어하고, 음성방송이면 오디오 출력이득값(K2)아 상기 오디오 신호의 평균값(m)이 같아지도록 오디오 이득값을 제어하는 과정으로 이루어진 것을 특징으로 하는 오디오 자동 보상 장치의 제어방법.A step of detecting whether the selected channel is a music broadcast or a voice broadcast when a volume of the selected channel is set according to a user's selection; and a step of detecting the audio output gain values K1 and K2 Calculating a mean value (m) of the audio signal detected by the FEP if the channel is changed after a predetermined period of time; detecting whether the changed channel is a music broadcast or an audio broadcast; The audio gain value is controlled such that the audio output gain K1 and the average value m of the audio signal are equal to each other and the average value m of the audio signal is equal to the audio output gain K2, And controlling the value of the audio signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960007004A 1996-03-15 1996-03-15 Automatic audio compensation device and control method thereof KR970068557A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030090364A (en) * 2002-05-23 2003-11-28 엘지전자 주식회사 System and method of automatically compensating a audio signal of a television

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030090364A (en) * 2002-05-23 2003-11-28 엘지전자 주식회사 System and method of automatically compensating a audio signal of a television

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