KR970057814A - Noise canceling device and method for on-demand video subscriber equipment - Google Patents

Noise canceling device and method for on-demand video subscriber equipment Download PDF

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Publication number
KR970057814A
KR970057814A KR1019950051234A KR19950051234A KR970057814A KR 970057814 A KR970057814 A KR 970057814A KR 1019950051234 A KR1019950051234 A KR 1019950051234A KR 19950051234 A KR19950051234 A KR 19950051234A KR 970057814 A KR970057814 A KR 970057814A
Authority
KR
South Korea
Prior art keywords
mute
power
signal
turned
circuit unit
Prior art date
Application number
KR1019950051234A
Other languages
Korean (ko)
Inventor
이화준
Original Assignee
김주용
현대전자산업 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 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019950051234A priority Critical patent/KR970057814A/en
Publication of KR970057814A publication Critical patent/KR970057814A/en

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Abstract

본 발명은 주문형 비디오(VOD : VIDEO ON DEMAND)의 시스템 정보 이용을 위한 가입자 댁내 장치(STB: SET TOP BOX)에 오디오 디지털/아날로그 변환기에 뮤트회로를 연결 노이즈를 제거하는 방법에 관한 것으로, 중앙처리 장치와 사용자 인터페이스의 뮤트단자의 신호를 OR게이트로 조합한 뮤트제어신호를 뮤트회로에 인가하여 노이즈를 제거하는 방법과 전원 인가후 상태가 변한 중앙 처리 장치의 뮤트단자를 이용하여 음량을 조절하는 것을 특징으로 사용자에게 듣기에 거부감이 없는 향상된 음향을 제공할 수 있어 매우 유용하다.The present invention relates to a method for removing noise by connecting a mute circuit to an audio-to-digital-to-analog converter to a set-top box (STB) for using system information of video on demand (VOD). A method of removing noise by applying a mute control signal combining a signal of a mute terminal of a device and a user interface with an OR gate to a mute circuit, and adjusting the volume using a mute terminal of a central processing unit whose state is changed after power is applied. This feature is very useful because it can provide the user with an improved sound with no rejection.

Description

주문형 비디오 가입자 댁내 장치의 노이즈 제거장치 및 방법Noise canceling device and method for on-demand video subscriber equipment

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

제2도는 본 발명의 제어 순서도이다.2 is a control flowchart of the present invention.

Claims (2)

가입자 댁내 장치에 있어서, 오디오 신호를 아날로그로 변환하여 출력하는 오디오 디지털/아날로그 변환기(1)와; 상기 아날로그로 변환된 신호를 인가받아 뮤트단자의 신호 조합의 뮤트 제어신호로 노이즈를 제거하는 뮤트회로부(2)를 포함하여 이루어져 전원 온/오프시 발생하는 노이즈를 제거함을 특징으로 하느 노이즈 제거 방법.A subscriber premises device comprising: an audio digital to analog converter (1) for converting an audio signal into an analog signal and outputting the analog signal; And a mute circuit unit (2) which receives the analog-converted signal and mutes the mute control signal of the signal combination of the mute terminal to remove the noise generated when the power is turned on or off. 뮤트회로부를 동작, 제어하는데 있어서, 전원을 온 시켰을 경우 각 뮤트단자들이 "L" 상태로 변환되어 뮤트회로부(2)를 동작시켜 노이즈를 제거하고 전원이 온되는 제1단계(S1)와 전원 인가후 "H" 상태로 변한 중앙처리 장치(3)의 S-MUTE가 음량을 조절하는 제2단계(S2)와 전원 오프시 다시 "L" 상태로 변환된 뮤트단자가 뮤트회로부(2)를 동작 노이즈를 제거한 뒤 전원이 오프되는 제3단계(S3)로 이루어져 순차 동작함을 특징으로 하는 노이즈 제거방법.In the operation and control of the mute circuit unit, when the power is turned on, each mute terminal is converted to the "L" state, and the mute circuit unit 2 is operated to remove noise and turn on the power. After the second step (S2) that the S-MUTE of the central processing unit (3) changed to the "H" state to adjust the volume and the mute terminal is converted back to the "L" state when the power is turned off to operate the mute circuit unit 2 Noise removal method characterized in that the step of the power is turned off after removing the noise (S3) to operate sequentially. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950051234A 1995-12-18 1995-12-18 Noise canceling device and method for on-demand video subscriber equipment KR970057814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950051234A KR970057814A (en) 1995-12-18 1995-12-18 Noise canceling device and method for on-demand video subscriber equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950051234A KR970057814A (en) 1995-12-18 1995-12-18 Noise canceling device and method for on-demand video subscriber equipment

Publications (1)

Publication Number Publication Date
KR970057814A true KR970057814A (en) 1997-07-31

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Application Number Title Priority Date Filing Date
KR1019950051234A KR970057814A (en) 1995-12-18 1995-12-18 Noise canceling device and method for on-demand video subscriber equipment

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KR (1) KR970057814A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469568B1 (en) * 2001-12-18 2005-02-02 한국전자통신연구원 Method and apparatus for controlling audio noise based on buffer monitoring

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420694A (en) * 1980-07-28 1983-12-13 Sony Corporation Muting circuit
KR940004488Y1 (en) * 1990-04-03 1994-07-04 대우전자 주식회사 Fuse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420694A (en) * 1980-07-28 1983-12-13 Sony Corporation Muting circuit
KR940004488Y1 (en) * 1990-04-03 1994-07-04 대우전자 주식회사 Fuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100469568B1 (en) * 2001-12-18 2005-02-02 한국전자통신연구원 Method and apparatus for controlling audio noise based on buffer monitoring

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E601 Decision to refuse application