KR950013222A - Audio output control method and circuit of television receiver - Google Patents

Audio output control method and circuit of television receiver Download PDF

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Publication number
KR950013222A
KR950013222A KR1019930022802A KR930022802A KR950013222A KR 950013222 A KR950013222 A KR 950013222A KR 1019930022802 A KR1019930022802 A KR 1019930022802A KR 930022802 A KR930022802 A KR 930022802A KR 950013222 A KR950013222 A KR 950013222A
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KR
South Korea
Prior art keywords
input
signal
voice
level
value
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Application number
KR1019930022802A
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Korean (ko)
Inventor
백운길
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이헌조
주식회사 엘지전자
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Priority to KR1019930022802A priority Critical patent/KR950013222A/en
Publication of KR950013222A publication Critical patent/KR950013222A/en

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  • Television Receiver Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

본 발명은 텔레비젼 수상기에서 음성신호의 출력레벨을 조정하는 기술에 관한 것으로, 종래의 텔레비젼 수상기에 있어서는 마이크로컴퓨터에서 출력되는 볼륨값에 따라 음성처리부의 증폭률이 조정되게 되어 있어 동일한 볼륨값에서도 티브이/비디오절환시 또는 입력음성신호의 변조도에 따라 음성출력 레벨이 갑자기 커지거나 작아지는 등의 결함이 있었다. 본 발명은 이를 해결하기 위하여 음성기준레벨 설정키이신호가 입력될때 음성레벨 검출부(15) 및 A/D 변환기 (16)를 통해 입력되는 음성신호의 레벨값을 메모리(19)에 저장한 후 파워온 또는 모드절환키이신호가 입력되는 것을 확인하여 상기 기준값과 현재 입력되는 음성신호의 레벨값을 비교하고, 상기의 비교결과 현재 입력되는 오디오신호의 레벨값이 메모리(19)에 저장된 기준값보다 작거나 크면 그 차에 해당하는 레벨만큼 음성처리부(13)측으로 공급하는 볼륨값을 보상하여 출력하도록 하였다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for adjusting the output level of an audio signal in a television receiver. In the conventional television receiver, the amplification ratio of the audio processing unit is adjusted according to the volume value output from the microcomputer. There was a defect that the audio output level suddenly increased or decreased depending on the switching or the modulation degree of the input audio signal. In order to solve the problem, the present invention stores the level value of the voice signal input through the voice level detector 15 and the A / D converter 16 when the voice reference level setting key signal is input, and then powers on the memory 19. Or confirming that a mode switching key signal is input, and comparing the reference value with the level value of the currently input voice signal, and if the level value of the currently input audio signal is smaller or larger than the reference value stored in the memory 19, The volume value supplied to the audio processor 13 side is compensated for and output as much as the level corresponding to the difference.

Description

텔레비젼 수상기의 음성출력제어 방법 및 회로Audio output control method and circuit of television receiver

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

제1도는 일반적인 텔레비젼 수상기의 블록도,1 is a block diagram of a typical television receiver,

제2도는 본 발명 텔레비젼 수상기의 음성출력제어 블록도,2 is an audio output control block diagram of a television receiver according to the present invention;

제3도는 본 발명의 음성출력제어 방법에 대한 신호 흐름도.3 is a signal flow diagram for the voice output control method of the present invention.

Claims (2)

음성기준레벨 설정키이신호가 입력될때 음성레벨 검출부(15) 및 A/D변환기 (16)를 통해 입력되는 음성신호의 레벨값을 메모리(19)에 저장하는 기준값 저장과정(S, S2)과, 파워온 또는 모드절환키이신호가 입력되는 것을 확인하여 상기 기준값과 현재 입력되는 음성신호의 레벨값을 비교하는 입력 음성신호 비교과정(S3, S4, S5)과, 상기의 비교결과 현재 입력되는 오디오신호의 레벨값이 메모리(19)에 저장된 기준값보다 작거나 크면 그 차에 해당하는 레벨만큼 음성처리부(13)측으로 공급하는 볼륨값을 보상하여 출력하는 보상과정(S6), (S8)으로 이루어지는 것을 특징으로 하는 텔레비젼 수상기의 음성출력제어 방법.A reference value storing process (S, S 2 ) for storing the level value of the voice signal input through the voice level detector 15 and the A / D converter 16 in the memory 19 when the voice reference level setting key signal is input; The input voice signal comparing process (S 3 , S 4 , S 5 ) comparing the reference value with the level value of the currently input voice signal by confirming that the power-on or mode switching key signal is input, and the comparison result compensation process of the input is less than the reference level value of the audio signal is stored in the memory 19 or greater compensation to output the volume value to supply toward the sound processor 13 as the level corresponding to the difference that (S 6), (S 8 ) a sound output control method for a television receiver. 중간주파수 신호(iF)를 공급받아 비디오신호(VI1)와 오디오신호(AU1)를 분리하는 중간주파수 처리부(11)와, 마이크로컴퓨터(18)의 제어를 받아 상기 중간주파수 처리부(11)에서 출력되는 오디오신호(AU1) 및 비디오신호(VI1)나 외부의 다른 경로를 통해 입력되는 오디오신호(AU2) 및 비디오 신호(VI2)를 선택하여 음성처리부 (13)및 영상처리부(20)로 전달하는 스위칭부(12)와, 마이크로컴퓨터(18)로 부터 입력되는 볼륨값에 따른 증폭율로 상기 스위칭부(12)를 통해 입력되는 오디오신호 (AU)를 증폭하여 이를 스피커(14)에 출력하는 음성처리부(13)와, 상기 스위칭부 (12)에서 음성처리부(13)측으로 입력되는 음성신호의 레벨을 검출하여 그에따른 전압을 출력하는 음성레벨 검출부(15)와, 상기 음성레벨 검출부(15)에서 출력되는 아날로그 신호를 디지탈신호로 변환하는 A/D 변환기(16)와, 키이매트릭스(17)를 통해 입력되는 티브이/비디오절환키이를 스캔하여 상기 스위칭부(12)에 스위칭 제어신호를 출력함과 아울러 상기 A/D 변환기(16)로 부터 입력되는 디지탈값과 메모리(19)로 부터 읽어온 기준데이타값의 비교결과에 따라 볼륨값을 보상하여 이를 상기 음성처리부(13)에 출력하는 마이크로컴퓨터(18)와, 상기 마이크로 컴퓨터(18)의 제어를 받아 상기 스위칭부(12)를 통해 입력되는 비디오신호(VI)를 처리하여 이를 씨피티(21)에 출력하는 영상처리부(20)로 구성한 것을 특징으로 하는 텔레비젼 수상기의 음성출력 제어회로.The intermediate frequency processor 11 receives the intermediate frequency signal iF and separates the video signal VI 1 and the audio signal AU 1 , and the intermediate frequency processor 11 under the control of the microcomputer 18. The audio processing unit 13 and the image processing unit 20 are selected by selecting the audio signal AU 1 and the video signal VI 1 outputted or the audio signal AU 2 and the video signal VI 2 input through another external path. Amplifying an audio signal (AU) input through the switching unit 12 at an amplification rate according to the volume value input from the microcomputer 18 and the speaker 14 to be transmitted to A voice level detector 15 for detecting the level of the voice signal input from the switching unit 12 to the voice processor 13 and outputting a voltage corresponding thereto, and the voice level detector Convert analog signal output from (15) to digital signal The A / D converter 16 scans a TV / video switching key input through the key matrix 17 and outputs a switching control signal to the switching unit 12, and the A / D converter 16. The microcomputer 18 and the microcomputer 18 which compensate the volume value according to the comparison result of the digital value input from the reference value and the reference data value read from the memory 19 and output it to the voice processor 13. Audio output control circuit of a television receiver characterized in that it comprises a video processing unit 20 for processing the video signal (VI) input through the switching unit 12 and outputs it to the Citi 21 under the control of . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930022802A 1993-10-29 1993-10-29 Audio output control method and circuit of television receiver KR950013222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930022802A KR950013222A (en) 1993-10-29 1993-10-29 Audio output control method and circuit of television receiver

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Application Number Priority Date Filing Date Title
KR1019930022802A KR950013222A (en) 1993-10-29 1993-10-29 Audio output control method and circuit of television receiver

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KR950013222A true KR950013222A (en) 1995-05-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100420138B1 (en) * 1998-11-30 2005-09-30 주식회사 대우일렉트로닉스 Method for controlling audio level in composite broadcasting receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100420138B1 (en) * 1998-11-30 2005-09-30 주식회사 대우일렉트로닉스 Method for controlling audio level in composite broadcasting receiver

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