KR980007314A - Apparatus and method for automatic speaker output control using FM noise level - Google Patents

Apparatus and method for automatic speaker output control using FM noise level Download PDF

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Publication number
KR980007314A
KR980007314A KR1019960022974A KR19960022974A KR980007314A KR 980007314 A KR980007314 A KR 980007314A KR 1019960022974 A KR1019960022974 A KR 1019960022974A KR 19960022974 A KR19960022974 A KR 19960022974A KR 980007314 A KR980007314 A KR 980007314A
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South Korea
Prior art keywords
noise
output
level
unit
signal
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KR1019960022974A
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Korean (ko)
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KR100189250B1 (en
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조택만
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김광호
삼성전자 주식회사
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Priority to KR1019960022974A priority Critical patent/KR100189250B1/en
Publication of KR980007314A publication Critical patent/KR980007314A/en
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Publication of KR100189250B1 publication Critical patent/KR100189250B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야 : 무선전화기의 휴대장치에 관한 것으로, 특히 무선 전화기의 휴대장치를 통해 통화를 수행할 시 스피커출력단에 출력되는 노이즈를 이용하여 출력레벨을 조절하는 장치 및 방법에 관한 것이다.1. Technical field to which the invention as described in the claims pertains, which relates to a portable device of a wireless telephone, in particular an apparatus for adjusting an output level by using noise output to a speaker output when making a call through the portable device of a wireless telephone. It is about a method.

2. 발명이 해결하려고 하는 기술적 과제 : 종래 휴대장치의 수신기는 송신기와의 거리가 멀어지거나 안테나의 특성에 따른 팬딩(panding)현상 즉, 반사파의 위상관계에 의한 감쇄현상에 의한 복조부의 출력노이즈가 수신신호가 있을 때의 오디오레벨 보다 상당히 큰 신호로 출력되어 사용자의 청각에 장애를 줄 수 있었던 문제점을 해결한다.2. Technical problem to be solved by the present invention: In the receiver of a conventional portable device, the output noise of the demodulator is reduced due to a distance from the transmitter or a phenomenon due to a panning according to the characteristics of the antenna, that is, attenuation due to the phase relationship of the reflected wave. It solves the problem that the user's hearing could be impaired by outputting a signal that is significantly larger than the audio level when there is a received signal.

3. 발명의 해결방법의 요지 : 무선전화기의 휴대장치를 통해 통화를 수행할 시 휴대장치 스피커 출력단에 출력되는 노이즈를 이용하여 출력레벨을 조절하는 방법 및 장치를 제공한다.3. Summary of the Invention The present invention provides a method and apparatus for adjusting an output level by using noise output to a speaker output terminal of a portable device when performing a call through a portable device of a wireless telephone.

4. 발명의 중요한 용도 : FM노이즈 레벨을 이용한 스피커 출력 자동제어 장치 및 방법.4. Significant use of the invention: Apparatus and method for automatic speaker output control using FM noise level.

Description

FM노이즈 레벨을 이용한 스피커 출력 자동제어 장치 및 방법Apparatus and method for automatic speaker output control using FM noise level

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 실시예에 따른 FM통신방식에 의한 수신장치의 블럭구성도.2 is a block diagram of a receiver according to the FM communication method according to an embodiment of the present invention.

제3도는 본 발명의 실시예에 따른 FM노이즈 레벨을 이용한 스피커 출력 자동제어 장치의 블럭구성도.3 is a block diagram of an automatic speaker output control apparatus using the FM noise level according to an embodiment of the present invention.

Claims (4)

안테나로부터 수신된 신호를 복조하는 복조부와, 상기 복조기로부터 출력된 오디오신호를 오디오 증폭하여 최종스피커로 출력하는 오디오증폭부를 가진 수신장치에 있어서, 상기 복조부로부터 오디오증폭부로 출력되는 오디오신호에 포함된 전파의 팬딩현상에 의한 노이즈나 전계강도가 약한상태에서 발생하는 노이즈를 입력받아 증폭하는 노이즈증폭부와, 상기 노이즈증폭부의 이득을 조절하는 이득조절부를 구비함을 특징으로 하는 FM노이즈 레벨을 이용한 스피커 출력 자동제어장치.A receiver having a demodulator for demodulating a signal received from an antenna and an audio amplifier for amplifying an audio signal output from the demodulator and outputting the audio signal to a final speaker, the receiver being included in an audio signal output from the demodulator to an audio amplifier. FM noise level, characterized in that it comprises a noise amplification unit for receiving and amplifying the noise caused by the phenomenon of the phenomena of the propagation of the radio wave is weak and the electric field strength is weak, and a gain control unit for adjusting the gain of the noise amplification unit Speaker output automatic control device. 제1항에 있어서, 상기 이득조절부는, 상기 노이즈 증폭부로부터 출력되는 교류성분의 노이즈를 정류하는 정류부와, 상기 증류부로부터 출력된 노이즈신호의 크기레벨에 따라 비교출력하는 레벨비교부로 구성됨을 특징으로 하는 FM노이즈 레벨을 이용한 스피커 출력 자동제어 장치.The method of claim 1, wherein the gain control unit comprises a rectifying unit for rectifying the noise of the AC component output from the noise amplifying unit, and a level comparison unit for comparative output according to the magnitude level of the noise signal output from the distillation unit. Automatic speaker output control using FM noise level. 제2항에 있어서, 상기 레벨비교부는, 상기 정류부로부터 출력되는 직류레벨의 노이즈신호에 따라 턴-온 동작되는 다수의 트랜지스터와, 상기 다수의 트랜지스터들의 컬렉터에 각각 연결되어 상기 오디오증폭부에 입력되는 오디오 신호레벨의 전압을 분배하는 다수의 바이어스 저항으로 구성함을 특징으로 하는 FM노이즈 레벨을 이용한 스피커 출력 자동제어 장치.3. The audio amplifier of claim 2, wherein the level comparison unit is connected to a plurality of transistors that are turned on in response to a noise signal of a DC level output from the rectifying unit and a collector of the plurality of transistors, respectively. Speaker output automatic control device using the FM noise level, characterized in that composed of a plurality of bias resistors for distributing the voltage of the audio signal level. FM노이즈 레벨을 이용한 스피커 출력 자동제어 방법에 있어서, 안테나로부터 수신된 신호를 복조하여 출력하는 과정과, 상기 복조부로부터 복조 출력되는 신호에 포함된 전파의 팬딩현상에 의한 노이즈나 전계강도가 약한상태에서 발생하는 노이즈를 입력받아 노이즈 증폭하는 과정과, 상기 노이즈 증폭되어 출력된 노이즈신호의 세기를 판단하고 레벨 비교하여 상기 복조 출력된 오디오신호의 이득을 자동으로 조절하는 과정을 수행함을 특징으로 하는 FM노이즈 레벨을 이용한 스피커 출력 자동제어 방법.In the automatic speaker output control method using the FM noise level, demodulating and outputting a signal received from the antenna, and a state of weak noise or electric field strength due to the phenomenon of the wave of the radio wave included in the signal demodulated from the demodulator FM, characterized in that the step of receiving the noise generated by the noise amplification, and the process of automatically adjusting the gain of the demodulated output audio signal by determining the level of the noise amplified output noise signal and comparing the level Automatic speaker output control using noise level.
KR1019960022974A 1996-06-21 1996-06-21 Auto speaker level controlling apparatus KR100189250B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960022974A KR100189250B1 (en) 1996-06-21 1996-06-21 Auto speaker level controlling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960022974A KR100189250B1 (en) 1996-06-21 1996-06-21 Auto speaker level controlling apparatus

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KR980007314A true KR980007314A (en) 1998-03-30
KR100189250B1 KR100189250B1 (en) 1999-06-01

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* Cited by examiner, † Cited by third party
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KR100602777B1 (en) 2005-03-21 2006-07-20 (주) 케텍 Wireless speaker system

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