KR19990047571A - TV system with automatic volume control - Google Patents

Abstract

The present invention relates to a TV system for automatically adjusting the volume of the TV to make a smooth call when a call is received. The volume of the output sound of the TV when a telephone is received while watching TV with a conventional TV receiver system is constant. If the level is higher than the other party's phone voice is not heard well, there was a problem that can not make the phone call smooth.

The present invention is a microphone unit 27 for receiving a call from the other party and the telephone ringing to the phone 26 so as to improve such a conventional problem, and the telephone ring sound signal received by the microphone unit 27 primarily A first amplifier 28 for amplifying the signal, a filter unit 29 for filtering only the frequency of the ring tone sound signal passed through the first amplifier 28, and amplifying the sound signal filtered by the filter unit 29 again. The second amplifier 30, the DC converter 31 for converting the AC component telephone ring tone signal amplified by the second amplifier 30 into a DC component, and the sound signal converted into the DC component is a telephone ring tone signal of a predetermined level or more. The microcomputer 33 which controls the TV voice volume controller 23 so that the comparator 32 outputs a predetermined output signal only and the output sound of the TV is output below a predetermined volume by receiving a predetermined output signal from the comparator 32. Including) And that is characterized.

Description

TV system with automatic volume control

The present invention relates to a TV system for automatically adjusting the volume of the TV to make a smooth call when a call is received, which is particularly controlled by the control of the TV micom when the phone rings while watching TV at a certain level or more. As the TV volume can be adjusted below a certain level, it is possible to solve the interruption caused by the TV output sound during the phone call.

In general, a TV receiver system receives various audio / video sources from outside and outputs them through a TV receiver. A typical form thereof is illustrated in FIG. 1.

In this case, the tuner 202 receives a regular broadcast signal from the antenna 201 and performs channel tuning. The filter 203 filters the tuner signal provided by the tuner 202, and the tuner 202. A prescaler and phase lock loop circuit 205 connected to perform automatic tuning tuning, a microcomputer 206 for controlling the prescaler and phase lock loop circuit 205, an OS 219, and the like, An audio processing circuit 213 which receives the signal provided from the remote control transmitter 208 and the audio processing circuit 213 which is connected to the output of the saw filter 203 and detects the audio signal and then provides the AV signal to the switch 212 side. And a P-F unit 213 or the like for intermediate-processing the video signal from the output of the saw filter 203 and providing the AV to the switch 212 side.

The system also includes a stereo audio output unit 214 connected to the switch 212 to output stereo audio to the speaker SP side, and a video signal processor 215 for providing a video signal to the CRT TV receiver. An external AV input terminal 210, an internal AV input terminal 211, a power supply unit 209, such as a matrix circuit 216, a vertical / horizontal output unit 217, 218, and AVSI connected to an input side of the switch 212. It consists of a configuration including the back.

In the system as described above, the microcomputer 206 receives various commands such as watching channel switching of various broadcasts and setting screen color / brightness / contrast through a key input unit including a remote controller transmitter 208, a remote controller receiver 207, and the like. Was doing.

However, there is a problem that the telephone voice of the other party can not be heard well when the telephone volume of the TV is over a certain level when the telephone is received while watching TV with the conventional TV receiver system.

It is an object of the present invention to improve the above problems, when the phone rings while watching TV at a certain level or more, the TV volume is automatically controlled by the control of the TV microcomputer so that the TV volume can be adjusted to a certain level or less during the TV call. The present invention provides a TV system having a volume automatic adjustment function to solve a call interruption.

The present invention particularly provides a microphone unit for receiving a ring when a telephone ringing from a telephone, a first amplifier for primarily amplifying a telephone ring tone signal received by the microphone unit, and a telephone ring tone passing through the first amplifier to implement the above object. A filter unit for filtering only the frequency of the signal, a DC converter for converting the AC component telephone ring tone signal filtered by the filter unit into a DC component telephone ring tone signal, and a predetermined signal only when the sound signal converted into DC component is a telephone ring tone signal of a predetermined level or more A comparator for outputting an output signal, and a microcomputer for controlling a TV voice volume controller to receive a predetermined output signal from the comparator so that the output sound of the TV is output below a predetermined volume.

Hereinafter, more specific features of the present invention will be understood by describing the same in detail with the accompanying drawings.

1 is a system circuit block diagram of a typical TV receiver;

2 is a system block diagram illustrating the present invention.

** Explanation of symbols on the main parts of the drawing **

20: antenna 21: tuner

22: audio signal processing circuit 23: voice volume controller

24: power amplifier section 25: speaker section

26: telephone 27: microphone

28: first amplifier 29: filter unit

30: second amplifier 31: DC converter

32: Comparator 33: TV Micom

That is, Figure 2 is a block diagram showing a TV system having an automatic volume control function according to the present invention.

In other words, the system receives the regular broadcast signal from the antenna 20 and performs the channel tuning, and the audio signal of the channel tuned by the tuner 21 is detected and then the intermediate frequency audio is processed. A signal processing circuit 22, a voice volume controller 23 for adjusting the volume of the voice signal processed by the audio signal processing circuit 22, and a power for amplifying the voice signal output from the voice volume controller 23 In a TV system having an amplifier unit 24, a speaker unit 25, etc., the microphone unit 27 for receiving a call from the other party and ringing the telephone 26 to the microphone unit 27, and the microphone unit 27 A first amplifier 28 that primarily amplifies the received ring tone signal, a filter unit 29 that filters only the frequency of the ring tone signal that has passed through the first amplifier 28, and the filter unit 29 filters Second to amplify the sound signal again The amplifier 30, the DC converter 31 for converting the AC component telephone ring sound signal amplified by the second amplifier 30 into a DC component, and the predetermined sound signal only when the sound signal converted into the DC component is a telephone ring sound signal of a predetermined level or more. A comparator 32 for outputting an output signal, and a microcomputer 33 for controlling the TV voice volume controller 23 to receive a predetermined output signal from the comparator 32 so that the output sound of the TV is output below a predetermined volume. And the like.

The present invention configured as described above will be described in more detail as follows.

When a call is received while watching TV in everyday life, the voice of the other party is difficult to hear because of the TV output sound coming from the TV.

That is, when a call is received from the other party and the telephone ringing on the phone 26, the microphone unit 27 provided on the TV set side receives the call.

When the telephone ring sound signal is received by the microphone unit 27, it is primarily amplified through the first amplifier 28 and then applied to the filter unit 29. At this time, care should be taken to match the resonant frequency of the filter unit 29 with the telephone ring frequency.

In addition, the sound signal filtered by the filter unit 29 is amplified again by the second amplifier 30 and then passed through the DC converter 31. At this time, the DC converter 31 amplifies the second amplifier 30. The AC component telephone ring sound signal is converted into the DC component.

Subsequently, the sound signal converted into the DC component is applied to the comparator 32, where the comparator 32 only applies when a ringing sound signal of a predetermined level or more, excluding other similar sound signals, is applied so that the volume of the TV is lowered only when the phone rings. Outputs 'High' or 'Low' signal.

The TV microcomputer 33 receiving the 'High' or 'Low' signal from the comparator 32 controls the TV voice volume controller 23 so that the audio output sound of the TV is output below a predetermined volume.

Therefore, the audio signal amplified through the power amplifier unit 24 is output through the speaker unit 25 at a volume below a predetermined level.

The present invention solves the interruption of the call caused by the TV output sound during the telephone call by allowing the TV volume to be automatically adjusted to a predetermined level or less by the control of the TV microcomputer 33 when the phone rings while watching TV at a volume of a predetermined level or more. can do.

Claims (1)

Fully tuned tuner 21 for receiving channel information from the antenna 20 and performing channel tuning, and audio signal processing circuit 22 for detecting an audio signal of a channel tuned by the tuner 21 and then processing an intermediate frequency. ), A voice volume controller 23 for adjusting the volume of the voice signal processed by the audio signal processing circuit 22, and a power amplifier unit 24 for amplifying the voice signal output from the voice volume controller 23. In the TV system having a speaker unit 25, the microphone unit 27 for receiving a call from the other party and ringing the phone 26, and the ring tone signal received by the microphone unit 27 The first amplifier 28 to amplify the first, the filter unit 29 for filtering only the frequency of the ring tone sound signal passed through the first amplifier 28, and the sound signal filtered by the filter unit 29 again A second amplifier 30 to amplify, and The DC converter 31 converts the AC component telephone ring sound signal amplified by the second amplifier 30 into a DC component, and the comparator 32 outputs a predetermined output signal only when the sound signal converted into the DC component is a telephone ring sound signal of a predetermined level or higher. And a microcomputer 33 for controlling the TV voice volume controller 23 to receive a predetermined output signal from the comparator 32 so that the output sound of the TV is output below a predetermined volume. TV system with automatic volume control.