KR950022286A - Howling prevention device for mobile wireless telephone - Google Patents

Howling prevention device for mobile wireless telephone Download PDF

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Publication number
KR950022286A
KR950022286A KR1019930030457A KR930030457A KR950022286A KR 950022286 A KR950022286 A KR 950022286A KR 1019930030457 A KR1019930030457 A KR 1019930030457A KR 930030457 A KR930030457 A KR 930030457A KR 950022286 A KR950022286 A KR 950022286A
Authority
KR
South Korea
Prior art keywords
specific tone
mobile wireless
microphone
speaker
prevention device
Prior art date
Application number
KR1019930030457A
Other languages
Korean (ko)
Inventor
강성모
Original Assignee
백중영
금성통신 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 백중영, 금성통신 주식회사 filed Critical 백중영
Priority to KR1019930030457A priority Critical patent/KR950022286A/en
Publication of KR950022286A publication Critical patent/KR950022286A/en

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Abstract

본 발명은 이동무선 전환기에 관한 것으로, 특히 특정통을 수신신호에 합성시켜 스피커로 송출하고, 그 송출된 신호를 마이크, 마이크 앰프를 통해 귀환시켜 특정톤의 양을 검출하여 스피커의 출력볼륨을 제어함으로써 스피커를 통해 송출된 수신음성이 마이크를 통해송신부로 귀환되어 발생하는 하울링 현상을 방지하고자 한 이동무선전화기의 하울링 방지장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile wireless switcher, and in particular, synthesizes a particular barrel into a received signal and sends it to a speaker, and sends the transmitted signal through a microphone or a microphone amplifier to detect a specific tone to control the output volume of the speaker. The present invention relates to a howling prevention device for a mobile wireless telephone intended to prevent a howling phenomenon caused by a received voice transmitted through a speaker to a transmitter through a microphone.

Description

이동무선 전화기의 하울링 방지장치Howling prevention device for mobile wireless telephone

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

제2도는 본 발명 이동무선 전화기의 하울링 방지장치 구성도.2 is a block diagram of the anti-howling device of the present invention.

Claims (1)

가청주파수 이외의 주파수를 발생하는 특정톤 발생수단과, 상기 발생된 특정톤을 마이크, 마이크 앰프를 순차 통해 입력받아 필터링하여 특정톤만을 출력시키는 특정톤 검출수단과, 상기 특정톤 검출수단으로부터 검출된 특정톤의 레벨에 따라 하울링 발생여부를 판단하고, 하울링 발생가능시 스피커의 불륨제어신호를 출력시켜 하울링을 방지하는 중앙처리장치를 포함하여 된 것을 특징으로 한 이동무선 전화기의 하울링 방지장치.A specific tone generating means for generating a frequency other than an audible frequency, a specific tone detecting means for sequentially filtering the generated specific tone through a microphone and a microphone amplifier, and outputting only a specific tone, and detected by the specific tone detecting means And a central processing unit for determining howling is generated according to a specific tone level, and outputting a volume control signal of the speaker to prevent howling. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930030457A 1993-12-28 1993-12-28 Howling prevention device for mobile wireless telephone KR950022286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930030457A KR950022286A (en) 1993-12-28 1993-12-28 Howling prevention device for mobile wireless telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930030457A KR950022286A (en) 1993-12-28 1993-12-28 Howling prevention device for mobile wireless telephone

Publications (1)

Publication Number Publication Date
KR950022286A true KR950022286A (en) 1995-07-28

Family

ID=66853227

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930030457A KR950022286A (en) 1993-12-28 1993-12-28 Howling prevention device for mobile wireless telephone

Country Status (1)

Country Link
KR (1) KR950022286A (en)

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E902 Notification of reason for refusal
E601 Decision to refuse application