KR970031248A - Audio input signal automatic discrimination circuit - Google Patents
Audio input signal automatic discrimination circuit Download PDFInfo
- Publication number
- KR970031248A KR970031248A KR1019950040112A KR19950040112A KR970031248A KR 970031248 A KR970031248 A KR 970031248A KR 1019950040112 A KR1019950040112 A KR 1019950040112A KR 19950040112 A KR19950040112 A KR 19950040112A KR 970031248 A KR970031248 A KR 970031248A
- Authority
- KR
- South Korea
- Prior art keywords
- audio
- input
- circuit
- input signal
- signal
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 claims abstract 8
- 230000003321 amplification Effects 0.000 abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
본 발명은 PC사운드 카드의 라인 출력단자 및 스피커 출력단자에서 출력되는 오디오 신호가 모니터에 내장된 오디오 증폭회로에 입력될때 오디오 입력 신호레벨에 의해 상기 입력된 오디오 신호를 오디오 증폭부에서 필요로하는 입력신호 레벨만큼 리미트되게 조절하여 고입력신호에 의한 오디오 증폭부의 손상 및 버언아웃(Burn-Out) 현상에 의한 오디오 회로동작을 조절할 수 있도록 한 오디오 입력신호 자동 판별회로에 관한 것으로 종래에는 일반사용자가 오디오 증폭회로가 내장된 모니터에 스피커 출력단자를 연결하여 사용할 경우 상기 오디오 증폭기의 최대입력 오디오 레벨은 2VP-P이므로 11VP-P∼18VP-P레벨이 입력될 경우 오디오 증폭기가 손상되고, 버언아웃되는 현상에 의해 화재가 발생하여 오디오 회로가 동작되지 않는 문제점이 있다.According to the present invention, when an audio signal outputted from a line output terminal and a speaker output terminal of a PC sound card is input to an audio amplifying circuit built in a monitor, an input for requiring the input audio signal by an audio amplifying unit by an audio input signal level is provided. The present invention relates to an automatic audio input signal discrimination circuit that can control audio circuit operation due to burn-out and damage to the audio amplification unit due to a high level of input signal. When the speaker output terminal is connected to a monitor with a built-in amplifier circuit, the maximum audio level of the audio amplifier is 2V PP. Therefore, if the 11V PP to 18V PP level is input, the audio amplifier is damaged and burned out. Occurs and there is a problem that the audio circuit is not operated.
본 발명은 이와같은 종래 문제점을 해결하기 위하여 오디오 증폭회로가 내장된 모니터에 PC사운드 카드의 라인 출력단자 또는 스피커 출력단자를 연결사용시 입력된 오디오신호를 비교 판단후 고입력 신호일 경우 오디오 증폭기가 필요로 하는 입력신호 레벨만큼 리미트되게 조절하므로서 오디오 증폭기의 손상을 방지하고 버언아웃 현상을 방지하여 오디오 회로를 안전하게 사용할 수 있도록 한 것으로 모니터 오디오 회로에 적용한다.The present invention requires an audio amplifier when a high input signal is determined after comparing the input audio signal when using the line output terminal or the speaker output terminal of a PC sound card to a monitor with an audio amplification circuit in order to solve such a conventional problem. By limiting the input signal level to the limit, it prevents the damage of the audio amplifier and prevents the burr out phenomenon so that the audio circuit can be used safely and is applied to the monitor audio circuit.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명 오디오 입력신호 자동판별 회로도.3 is a circuit diagram for automatically determining audio input signal according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950040112A KR0168760B1 (en) | 1995-11-07 | 1995-11-07 | Automatically discriminating circuit of audio input signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950040112A KR0168760B1 (en) | 1995-11-07 | 1995-11-07 | Automatically discriminating circuit of audio input signal |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970031248A true KR970031248A (en) | 1997-06-26 |
KR0168760B1 KR0168760B1 (en) | 1999-03-20 |
Family
ID=19433266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950040112A KR0168760B1 (en) | 1995-11-07 | 1995-11-07 | Automatically discriminating circuit of audio input signal |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0168760B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100511440B1 (en) * | 2002-12-13 | 2005-08-31 | 티제이미디어 주식회사 | Control system and its method of karaoke player's amp using analog form |
KR100529530B1 (en) * | 2002-12-13 | 2005-11-17 | 티제이미디어 주식회사 | Control system and its method of karaoke player's amp using digital form |
-
1995
- 1995-11-07 KR KR1019950040112A patent/KR0168760B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100511440B1 (en) * | 2002-12-13 | 2005-08-31 | 티제이미디어 주식회사 | Control system and its method of karaoke player's amp using analog form |
KR100529530B1 (en) * | 2002-12-13 | 2005-11-17 | 티제이미디어 주식회사 | Control system and its method of karaoke player's amp using digital form |
Also Published As
Publication number | Publication date |
---|---|
KR0168760B1 (en) | 1999-03-20 |
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