JPH10136485A - Sound output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain cost down by providing sound output terminals just for one system by switching the volume of sounds to be outputted from the sound output terminals to fixed or variable when a sound switch button is depressed at an input operation part. SOLUTION: When a sound switch button 12-A in an input operation part 12 is operated, the increase of decrease of volume is transmitted through a sound switch means 13-D and a volume control means 13-A to a volume control circuit 8 and the volume of sounds to be outputted to a sound output terminal 9 is adjusted. At the same time, the information of operated volume is reported to a volume display processing circuit 13-E, the result of processing at the volume display processing circuit 13-E is outputted from a 7-segment LED display driving circuit 13-F, and the current volume is displayed on a 7-segment LED. Besides, when a sound switch button 12-B in the input operation part 12 is depressed, the volume is fixed at a certain value by the sound switch means 13-D. Then, the fixture of volume is displayed on the 7-segment LED.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio output device capable of varying the volume of an audio output terminal and a speaker in a television receiver having an audio output terminal in addition to a speaker, for example.

[0002]

2. Description of the Related Art Conventionally, in a television receiver having an audio output device, the volume output from an audio output terminal is either variable or fixed.

[0003]

When another device is connected to the audio output terminal and the volume is adjusted from the audio output device, it is desirable that the volume from the audio output terminal be variable. When the volume is adjusted by another device connected to the audio output device, it is desirable that the volume from the audio output terminal be fixed independently of the volume adjustment of the audio output device.
As described above, it is desirable that the volume output from the audio output terminal is either variable or fixed in accordance with the device connected to the audio output device. Conventionally, in order to satisfy this, two or more terminals of a sound volume variable terminal and a fixed volume terminal are required as audio output terminals, resulting in an increase in cost and a waste of output terminals when only one system is used. Had the problem of becoming

[0004]

According to the present invention, there is provided a volume control circuit for controlling a volume in order to make the volume output from the same audio output terminal either fixed or variable. And a volume control means for fixing or changing the volume output from the audio output terminal when the audio output switching button is pressed in the input operation section.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a speaker output and an audio output terminal, and when the speaker output is off, the volume output from the same audio output terminal is fixed or variable. The audio output device has a function of switching the volume of the audio output from the audio output terminal to be fixed or variable when the audio switching button is pressed in the input operation unit.

According to a second aspect of the present invention, a volume control circuit for controlling a volume, a volume control means for controlling the volume control circuit, and a voice output from a voice output terminal can be fixed or variable. And a voice display control means for displaying and outputting the content processed by the voice processing means. The voice output device comprises: It has the function of switching the volume of the sound output from the sound output terminal through the processing means to fixed or variable, and displaying and outputting the contents processed by the sound processing means by the sound display processing means.

According to a third aspect of the present invention, there is provided an audio display processing circuit for displaying the content processed by the audio processing means on a screen of a cathode ray tube. An output device, wherein when an audio switching button is pressed in the input operation section, the volume of audio output from the audio output terminal is fixed or variably switched through the audio processing means, and the content processed by the audio processing means is displayed on the screen of the cathode ray tube. It has the effect of being displayed and output above.

According to a fourth aspect of the present invention, there is provided a speaker output switch circuit for turning on or off a speaker output, speaker output control means for controlling the speaker output switch circuit, and a volume control circuit for controlling the volume. Volume control means for controlling the volume control circuit, and the volume control means and the speaker output control means are linked to turn on or off a speaker output, and when the speaker is off, a sound output from a voice output terminal is fixed. An audio output device, comprising: an audio processing unit for making it possible to change or change; and an audio display control unit for displaying and outputting the content processed by the audio processing unit. Press to fix the speaker on and off through the audio processing means and the volume of the audio output from the audio output terminal Along with other switches variable,
It has the effect of displaying and outputting the content processed by the audio processing means on the audio display output means.

According to a fifth aspect of the present invention, there is provided an audio display control circuit for displaying the content processed by the audio processing means on a screen of a cathode ray tube. An output device. When an audio switching button is pressed in the input operation unit, the speaker is turned on and off through an audio processing unit, and the volume of audio output from an audio output terminal is fixed or variably switched. The displayed contents are displayed and output on the screen of the cathode ray tube.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an audio output device according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram of a main part of a device having an audio output device according to a first embodiment of the present invention.

In FIG. 1, an audio signal is supplied to an audio input terminal 1.
5 through the volume control circuit 8 and the audio output terminal 9
Output. On the other hand, the input operation unit 12 includes an audio output switching button 12-A and a volume control button 12-B.

When the audio output switching button 12-A and the volume control button 12-B are operated, the microcomputer 1
The voice switching means 13-D and the volume control means 13-A in 3 operate the volume control circuit 8, and the information on the volume is sent to the voice display processing circuit 13-E. E, 7-segment LED display drive circuit 13
Displayed on a 7-segment LED via -F.

Next, the operation of the above configuration will be described. First, the audio signal input from the audio input terminal 15 passes through the volume control circuit 8 and is output from the audio output terminal 9. Here, when the volume operation button 12-A in the input operation unit 12 is operated, the sound switching unit 13-D, the volume control unit 1
The volume control circuit 8 increases or decreases the volume through 3-A.
And the volume of the audio output to the audio output terminal 9 is adjusted, and information on the operated volume is transmitted to the volume display processing circuit 13-E, and the volume display processing circuit 13-E is operated.
The signal processed at -E is output from the 7-segment LED display drive circuit 13-F, and the current volume is displayed on the 7-segment LED.

A voice switch button 12 in the input operation unit 12
When -B is pressed, the sound volume is fixed to a certain value in the sound switching means 13-D, and the sound volume fixed by the sound switching means 13-D is transmitted to the sound volume control circuit 8 through the sound volume control means 13-A. Is output to the audio output terminal 9 and the information of the fixed volume is output to the volume display processing circuit 13-E.
Is output from the 7-segment LED display drive circuit 13-F to indicate that the volume is fixed to the 7-segment LED.

As display examples, "FIX", "-", etc. can be considered. At this time, the volume operated by the volume operation button 12-A becomes invalid.

(Embodiment 2) FIG. 2 is a block diagram showing a main part of a television receiver having an audio output device according to a second embodiment of the present invention.

In FIG. 2, a television video signal passes through a tuner 1, a video intermediate frequency amplification circuit 2, a video detection circuit 3, a video amplification circuit 4, and a video signal display switching circuit 5, and
It is projected on RT6. The audio signal of the television is separated from the video signal by the video detection circuit 3, passes through the audio signal processing circuit 7 and the volume control circuit 8, and is output from the audio output terminal 9.

On the other hand, the input operation section 12 comprises an audio output switching button 12-A and a volume control button 12-B. The audio output switching button 12-A and the volume control button 12
When -B is operated, the voice switching means 13-D and the volume control means 13-A in the microcomputer 13 operate to control the volume control circuit 8, and the volume information is transmitted to the voice display processing circuit 13-E. Sent to the CRT 6 via the R / G / B character drive circuits 13-R, 13-G, and 13-B.
Will be displayed on the screen.

Next, the operation of the above configuration will be described. First, a tuner 1, a video intermediate frequency amplification circuit 2, a video detection circuit 3, a video amplification circuit 4,
The image is displayed on the CRT 6 through the video signal display switching circuit 5.

The audio signal of the television is input from the antenna similarly to the video signal, passes through a tuner 1, a video intermediate frequency amplification circuit 2, and a video detection circuit 3, and is separated from the video signal by the video detection circuit 3. The signal passes through the audio signal processing circuit 7 and the volume control circuit 8 and is output from the audio output terminal 9.

Here, the volume operation button 1 in the input operation section 12
When 2-A is operated, the increase or decrease of the volume is transmitted to the volume control circuit 8 through the voice switching means 13-D and the volume control means 13-A, and the volume of the voice output to the voice output terminal 9 is adjusted. At the same time, information on the operated volume is transmitted to the volume display processing circuit 13-E, and the data processed by the volume display processing circuit 13-E is processed by the R / G / B character drive circuits 13-R and 13-R. -C, via G, 13-B
6 is displayed on the screen.

The voice switch button 12 in the input operation unit 12
When -B is pressed, the sound volume is fixed to a certain value in the sound switching means 13-D, and the sound volume fixed by the sound switching means 13-D is transmitted to the sound volume control circuit 8 through the sound volume control means 13-A. Is output to the audio output terminal 9 and the information of the fixed volume is output to the volume display processing circuit 13-E.
Are processed by the volume display processing circuit 13-E, and are converted into R / G / B character driving circuits 13-R and 13-R.
Via G, 13-B, the fact that the volume is fixed is displayed on the screen of the CRT 6 on-screen.

A display example is "FIXEDAUDIO,
OUT "etc. At this time, the volume operation button 12-A
Does not interlock with the volume output from the audio output terminal 9.

(Embodiment 3) FIG. 3 is a block diagram of a main part of a device having a speaker and an audio output device according to a third embodiment of the present invention.

In FIG. 3, an audio signal is input to an audio input terminal 1.
5, passes through the volume control circuit 8, and is output from the audio output terminal 9 and the speaker 10.

On the other hand, the input operation section 12 comprises an audio output switching button 12-A and a volume control button 12-B. The audio output switching button 12-A and the volume control button 12
When -B is operated, the voice switching means 13-D, the volume control means 13-A, and the speaker switching control means 10 in the microcomputer 13 operate to control the volume control circuit 8 and the speaker output switching circuit 11, and The information on the volume is sent to the audio display processing circuit 13-E, and the audio display processing circuit 13-E and the 7-segment LED display driving circuit 13-E
Displayed on the 7-segment LED via F.

Next, the operation of the above configuration will be described. First, the audio signal input from the audio input terminal 15 passes through the volume control circuit 8 and is output from the audio output terminal 9 and the speaker 10.

Here, the volume operation button 1 in the input operation section 12
When 2-A is operated, the increase or decrease of the volume is transmitted to the volume control circuit 8 through the voice switching means 13-D and the volume control means 13-A, and the voice output terminal 9 and the speaker 1 are transmitted.
The volume of the sound output to 0 is adjusted.

The voice switch button 12 in the input operation unit 12
The case where the voice switching means 13-D turns on the speaker 10 to output the value of the volume operated by the volume control button 12-A to the voice output terminal 9 and the speaker 10 each time -B is pressed once; When the speaker 10 is turned off and only the audio output terminal 9 outputs the volume value operated by the volume operation button 12-A, and when the speaker 10 is turned off, the volume value output from the audio output terminal 9 is changed. Volume control button 12
A case where the value is fixed to a certain value irrespective of the value operated at -A is selected in order, and is instructed to the volume control means 13-A and the speaker output switching means 13-C.

The value of the volume commanded to the volume control means 13-A is transmitted to the volume control circuit 8 to control the volume, and the speaker output switching means 13-C determines whether the speaker 10 is to be turned on or off. Output switching circuit 11
To the audio output terminal 9 and the speaker 10.

At the same time, information indicating whether the volume is variable or fixed and whether the speaker 10 is on or off is transmitted to the volume display processing circuit 13-E. Is output from the 7-segment LED display drive circuit 13-F, and the information of the speaker on or off and the volume information when the volume is variable are fixed to the 7-segment LED. Indicates that the volume is fixed.

(Embodiment 4) FIG. 4 is a block diagram of a main part of a television receiver having an audio output device according to a fourth embodiment of the present invention.

In FIG. 4, a video signal of a television passes through a tuner 1, a video intermediate frequency amplification circuit 2, a video detection circuit 3, a video amplification circuit 4, and a video signal display switching circuit 5, and the C
It is projected on RT6. The audio signal of the television is separated from the video signal by the video detection circuit 3, passes through the audio signal processing circuit 7 and the volume control circuit 8, and is output from the audio output terminal 9.

On the other hand, the input operation section 12 comprises an audio output switching button 12-A and a volume control button 12-B. The audio output switching button 12-A and the volume control button 12
When -B is operated, the voice switching means 13-D and the volume control means 13-A in the microcomputer 13 operate to control the volume control circuit 8, and the volume information is transmitted to the voice display processing circuit 13-E. Sent to the CRT 6 via the R / G / B character drive circuits 13-R, 13-G, and 13-B.
Will be displayed on the screen.

Next, the operation of the above configuration will be described. First, a tuner 1, a video intermediate frequency amplification circuit 2, a video detection circuit 3, a video amplification circuit 4,
The image is displayed on the CRT 6 through the video signal display switching circuit 5.

A television audio signal is input from an antenna in the same manner as a video signal, passes through a tuner 1, a video intermediate frequency amplification circuit 2, and a video detection circuit 3, and is separated from the video signal by the video detection circuit 3. The audio signal is output from an audio output terminal 9 and a speaker 10 through an audio signal processing circuit 7 and a volume control circuit 8.

Here, the volume operation button 1 in the input operation section 12
When 2-A is operated, the increase or decrease of the volume is transmitted to the volume control circuit 8 through the voice switching means 13-D and the volume control means 13-A, and the voice output terminal 9 and the speaker 1 are transmitted.
The volume of the sound output to 0 is adjusted.

The voice switch button 12 in the input operation unit 12
The case where the voice switching means 13-D turns on the speaker 10 to output the value of the volume operated by the volume control button 12-A to the voice output terminal 9 and the speaker 10 each time -B is pressed once; When the speaker 10 is turned off and only the audio output terminal 9 outputs the volume value operated by the volume operation button 12-A, and when the speaker 10 is turned off, the volume value output from the audio output terminal 9 is changed. Volume control button 12
A case where the value is fixed to a certain value irrespective of the value operated at -A is selected in order, and is instructed to the volume control means 13-A and the speaker output switching means 13-C. Volume control means 1
3-A is transmitted to the volume control circuit 8 to control the volume, and the speaker output switching means 13-C
The speaker output switching circuit 11 informs the speaker output switching circuit 11 of whether the speaker 10 is to be turned on or off, and is output to the audio output terminal 9 and the speaker 10.

At the same time, information indicating whether the volume is variable or fixed and whether the speaker 10 is on or off is transmitted to the volume display processing circuit 13-E. R / G / B
Via the character drive circuits 13-R, 13-G, 13-B, the information on the speaker on or off and the information on the volume when the volume is variable are fixed on the screen of the CRT 6. If the volume is fixed, it is displayed on-screen.

[0041]

As described above, the present invention provides a speaker output switch circuit for switching on or off a speaker output, speaker output control means for controlling the speaker output switch circuit, a volume control circuit for controlling volume, and Volume control means for controlling a volume control circuit, and the volume control means and the speaker output control means are linked to turn on or off a speaker output, and to fix a sound output from a sound output terminal when the speaker is off. In the case of a television receiver provided with an audio processing means for making it variable and an audio display control circuit for displaying and outputting the content processed by the audio processing means, audio is output in accordance with an external device connected to an audio output terminal. By fixing or changing the volume output from the output terminal, the audio output terminal that previously required two or more Because you have to useless, it is possible to realize a low cost.

Also, conventionally, the volume control and the speaker output control have been operated separately. However, by providing audio processing means for interlocking the volume control means and the speaker output control means, only one operation is required, and cost reduction is achieved. The operability can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of an audio output device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a main part of a television receiver according to a second embodiment of the present invention.

FIG. 3 is a block diagram of a main part of an audio output device according to a third embodiment of the present invention.

FIG. 4 is a block diagram of a main part of a television receiver according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuner 2 Video intermediate frequency amplifier circuit 3 Video detection circuit 4 Video amplifier circuit 5 Video signal display switching circuit 6 CRT 7 Audio signal processing circuit 8 Volume control circuit 9 Audio output terminal 10 Speaker 11 Speaker output control circuit 12 Input operation unit 12- A audio switching button 13 microcomputer 13-A volume control means 13-C speaker output switching means 13-D audio processing means 13-E audio display processing circuit 13-RR display drive circuit for R character 13-G display drive for G character Circuit 13-B Display drive circuit for B characters 13-F 7-segment LED display drive circuit 14 7-segment LED display 15 Audio input terminal

Claims (5)

[Claims] 1. An audio output device comprising a speaker output and an audio output terminal, wherein when the speaker output is off, the volume output from the audio output terminal is either fixed or variable. 2. A sound volume control circuit for controlling a sound volume, a sound volume control means for controlling the sound volume control circuit, and a sound processing means for fixing sound output from a sound output terminal to one of fixed and variable. A sound display control means for displaying and outputting the content processed by the sound processing means. 3. The audio output device according to claim 2, further comprising an audio display processing circuit for displaying the content processed by the audio processing means on a screen of the cathode ray tube. 4. A speaker output switch circuit for turning on or off a speaker output, speaker output control means for controlling the speaker output switch circuit, a volume control circuit for controlling the volume, and a volume control for controlling the volume control circuit. Means, interlocking the volume control means and the speaker output control means to turn on or off the speaker output,
When the speaker is off, there is provided audio processing means for fixing the audio output from the audio output terminal to either fixed or variable, and audio display control means for displaying and outputting the content processed by the audio processing means. An audio output device characterized by the following. 5. An audio output device according to claim 4, further comprising an audio display control circuit for displaying the content processed by the audio processing means on a screen of the cathode ray tube.