KR970072649A - Volume control range expansion device of audio equipment - Google Patents

Volume control range expansion device of audio equipment Download PDF

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Publication number
KR970072649A
KR970072649A KR1019960012875A KR19960012875A KR970072649A KR 970072649 A KR970072649 A KR 970072649A KR 1019960012875 A KR1019960012875 A KR 1019960012875A KR 19960012875 A KR19960012875 A KR 19960012875A KR 970072649 A KR970072649 A KR 970072649A
Authority
KR
South Korea
Prior art keywords
volume
amplifiers
gain
range expansion
microprocessor
Prior art date
Application number
KR1019960012875A
Other languages
Korean (ko)
Inventor
조기영
Original Assignee
김광호
삼성전자 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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960012875A priority Critical patent/KR970072649A/en
Publication of KR970072649A publication Critical patent/KR970072649A/en

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Abstract

본 발명은 오디오 기기의 볼륨 조절 범위 확장장치에 관한 것으로서, 외부로부터 안테나를 통하여 수신되거나 내부에서 재생된 스테레오의 음성 신호는 두 증폭기의 비반전 입력단으로 입력되도록하고, 출력단에서 부귀환되는 상기 두 증폭기의 반전 입력단에서 다수의 스위치를 통하여 서로 연결하고, 상기 두 증폭기에서 중폭된 출력은 전자 볼륨 IC로 입력되도록 하고, 볼륨 업/ 다운 키이 등을 구비한 키이 입력부를 통한 볼륨의 선택 사양은 마이크로 프로세서로 입력되도록 하고, 상기의 마이크로 프로세서에서는 상기의 스위치를 선택적으로 온/오프시키면서 증폭기의 게인을 조절하도록 하고, 상기 마이크로 프로세서로부터 콘트롤 버스 라인을 통해 출력되는 볼륨조절에 따라 제어 신호를 입력받는 전자 볼륨 IC에서는 사용자가 원하는 볼륨으로 확대된 동작 범위 내에서 미세하게 증폭, 조절된 음성을 출력하도록 한 것이다.The present invention relates to an apparatus for expanding a volume control range of an audio apparatus, in which a stereo audio signal received through an antenna from outside or reproduced from the inside is input to a non-inverting input terminal of two amplifiers, The volume output from the two amplifiers is input to the electronic volume IC, and the volume specification through the key input section including the volume up / down keys is connected to the microprocessor And the microprocessor controls the gain of the amplifier while selectively turning on / off the switch, and receives the control signal according to the volume control output from the microprocessor through the control bus line. In the volume you want And outputs the voice amplified and adjusted finely within the enlarged operation range.

Description

오디오 기기의 보륨 조절 범위 확장장치Volume control range expansion device of audio equipment

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

제2도는 본 발명의 볼륨 조절 장치의 구성을 나타낸 회로도, 제3도는 본 발명의 볼륨 조절 장치의 동작을 나타낸 플로우 챠드.FIG. 2 is a circuit diagram showing a configuration of a volume control device of the present invention, and FIG. 3 is a flow chart showing an operation of the volume control device of the present invention.

Claims (2)

외부로부터 수신되거나 내부에서 재생된 스테레오의 음성 신호는 두 증폭기에서 증폭한 후 전자 볼륨 IC로 입력되도록하고, 볼륨의 선택 사양을 입력받은 마이크로 프로세서에서 전자 볼륨 IC로 제어신호를 출력하여 전자 볼륨 IC에서 증폭, 조절시킨 음성을 출력하도록 오디오 기기의 볼륨 조절 범위 확장장치에 있어서, 상기 두 증폭기의 반전 입력단에는 게인 조절부를 연결하여 게인의 값을 변화시키면서 전자 볼륨 IC의 조절 범위가 커지도록한 오디오 기기의 볼륨 조절 범위 확장장치.The stereo audio signal received from the outside or reproduced from the inside is amplified by two amplifiers and inputted to the electronic volume IC. Then, the microprocessor receiving the volume selection specification outputs the control signal to the electronic volume IC, And a gain control unit connected to the inverting input terminal of the two amplifiers to change the value of the gain so that the adjustment range of the electronic volume IC is increased. Volume adjustment range expansion unit. 제1항에 있어서, 상기의 게이 조절부(16)는 두 증폭기(14), (15)의 반전 입력단에 병렬로 연결된 저항(R1, R2), (R3, R4)과 스위칭(SW1, SW2)의 접속 상태에 따라 게인의 값이 변화하여 전자 볼륨 IC(17)로 입력 되도록하고, 마이크로 프로세서(19)에서 구동부를 통하여 게인 조절부의 스위치(SW1, SW2)의 접속 상태를 제어하도록 한 오디오 기기의 볼륨 조절 범위 확장장치.2. The amplifier according to claim 1, wherein the gain regulator (16) comprises resistors (R1, R2), (R3, R4) and switches (SW1, SW2) connected in parallel to the inverting input of the two amplifiers (14, The microcomputer 19 controls the connection state of the switches SW1 and SW2 of the gain control unit through the driving unit so that the value of the gain is changed according to the connection state of the audio device Volume adjustment range expansion unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960012875A 1996-04-25 1996-04-25 Volume control range expansion device of audio equipment KR970072649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960012875A KR970072649A (en) 1996-04-25 1996-04-25 Volume control range expansion device of audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960012875A KR970072649A (en) 1996-04-25 1996-04-25 Volume control range expansion device of audio equipment

Publications (1)

Publication Number Publication Date
KR970072649A true KR970072649A (en) 1997-11-07

Family

ID=66217287

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960012875A KR970072649A (en) 1996-04-25 1996-04-25 Volume control range expansion device of audio equipment

Country Status (1)

Country Link
KR (1) KR970072649A (en)

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