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JPH10136485

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JPH10136485
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio output apparatus capable of changing the volume of an audio output terminal and a
speaker in a television receiver having an audio output terminal in addition to the speaker, for
example.
[0002]
2. Description of the Related Art Conventionally, in a television receiver having an audio output
device, the volume output from the audio output terminal is either variable or fixed.
[0003]
In the case where 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 can be varied.
Further, 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 irrespective of the volume
adjustment of the audio output device. As described above, it is desirable that the volume output
from the audio output terminal be either variable or fixed corresponding to the device connected
to the audio output device. Conventionally, in order to satisfy this, two or more systems of a
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1
volume variable terminal and a volume fixed terminal are required as an audio output terminal,
which increases the cost, and the remaining output terminals are wasted when only one system is
used. Had the task of becoming
[0004]
SUMMARY OF THE INVENTION In order to achieve the above object, according to the present
invention, a volume control circuit for controlling the volume to make the volume output from
the same audio output terminal be either fixed or variable. Further, when the audio output
switching button is depressed in the input operation unit, the volume output from the audio
output terminal can be fixed or variable.
[0005]
The invention according to claim 1 of the present invention has 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. An audio output device capable of changing the volume of
audio output from the audio output terminal to fixed or variable when the audio switching button
is pressed in the input operation unit.
[0006]
The invention according to claim 2 of the present invention is to make a sound volume control
circuit for controlling a sound volume, a volume control means for controlling the volume control
circuit, and to make the sound outputted from an audio output terminal fixed or variable. An
audio output device comprising an audio processing means and an audio display control means
for displaying and outputting the content processed by the audio processing means, and pressing
an audio switching button in the input operation unit The sound volume of the sound output
from the sound output terminal is fixedly or variably switched, and the contents processed by the
sound processing means are displayed and output by the sound display processing means.
[0007]
The invention according to claim 3 of the present invention is an audio output apparatus
according to claim 2, further comprising an audio display processing circuit for displaying the
content processed by the audio processing means on the screen of the cathode ray tube. When
the voice switching button is pressed in the input operation unit, the volume of the voice output
from the voice output terminal is fixed or variable through the voice processing means, and the
content processed by the voice processing means is displayed on the screen of the cathode ray
tube Has an action to be output.
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2
[0008]
The invention according to claim 4 of the present invention is a speaker output switch circuit for
switching on or off of a speaker output, a speaker output control means for controlling the
speaker output switch circuit, a volume control circuit for controlling volume, and the volume
The volume control means for controlling the control circuit, the volume control means and the
speaker output control means are interlocked to turn on or off the speaker output, and when the
speaker is off, the sound output from the audio output terminal is fixed or variable A voice output
device characterized by comprising voice processing means for enabling and voice display
control means for displaying and outputting the contents processed by the voice processing
means, and pressing the voice switching button on the input operation unit Fixed or variable on /
off of the speaker through the audio processing means and the volume of the audio output from
the audio output terminal Ri together with changing, has the effect of displaying output by voice
display output unit contents processed by the audio processing unit.
[0009]
The invention according to claim 5 of the present invention comprises an audio display control
circuit for displaying the content processed by the audio processing means on the screen of the
cathode ray tube. Yes, when the voice switching button is pressed in the input operation unit, the
speaker is turned on and off through the voice processing means, and the volume of the voice
output from the voice output terminal is switched fixed or variable, and the contents processed
by the voice processing means Is displayed on the screen of the cathode ray tube.
[0010]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An audio output apparatus
according to an embodiment of the present invention will be described below with reference to
the drawings.
[0011]
(Embodiment 1) FIG. 1 is a block diagram showing the main part of an apparatus provided with
an audio output device according to a first embodiment of the present invention.
[0012]
In FIG. 1, an audio signal is input from an audio input terminal 15, passes through a volume
control circuit 8, and is output from an audio output terminal 9.
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On the other hand, the input operation unit 12 includes an audio output switching button 12-A
and a volume control button 12-B.
[0013]
When the voice output switching button 12-A and the volume control button 12-B are 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. The volume information is sent to the audio
display processing circuit 13-E, and is displayed by the 7-segment LED via the audio display
processing circuit 13-E and the 7-segment LED display drive circuit 13-F.
[0014]
Next, the operation of the above configuration will be described.
First, an 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,
increase or decrease of the volume is transmitted to the volume control circuit 8 through the
sound switching means 13-D and the volume control means 13-A. The volume of the sound
output to the output terminal 9 is adjusted, and the information of 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 divided into seven segments. Output from the LED display drive
circuit 13-F, the current volume is displayed on the 7-segment LED.
[0015]
Further, when the voice switching button 12-B in the input operation unit 12 is pressed, the
volume is fixed to a certain value in the voice switching unit 13-D, and the volume fixed by the
voice switching unit 13-D is volume controlled. The information is transmitted to the volume
control circuit 8 through the means 13-A and output to the audio output terminal 9, and
information of the fixed volume is transmitted to the volume display processing circuit 13-E, and
the volume display processing circuit 13-E The processed data is output from the 7-segment LED
display drive circuit 13-F, and it is displayed that the volume is fixed to the 7-segment LED.
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[0016]
As a display example, "FIX", "-" etc. can be considered.
At this time, the volume operated by the volume operation button 12-A becomes invalid.
[0017]
(Embodiment 2) FIG. 2 is a block diagram showing the main components of a television receiver
provided with an audio output device according to a second embodiment of the present
invention.
[0018]
In FIG. 2, the video signal of the television passes through the tuner 1, the video intermediate
frequency amplification circuit 2, the video detection circuit 3, the video amplification circuit 4
and the video signal display switching circuit 5, and is displayed on the CRT 6.
Further, 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.
[0019]
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 voice output switching button 12-A and the volume control button 12-B are 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. The volume information is sent to the voice
display processing circuit 13-E, and displayed on the screen of the CRT 6 on screen via the R / G
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/ B character drive circuits 13-R, 13-G, 13-B. Ru.
[0020]
Next, the operation of the above configuration will be described.
First, it is displayed on the CRT 6 through the tuner 1 input from the antenna, the video
intermediate frequency amplification circuit 2, the video detection circuit 3, the video
amplification circuit 4 and the video signal display switching circuit 5.
[0021]
Also, the audio signal of the television is input from the antenna as well as the video signal, then
passes through the tuner 1, the video intermediate frequency amplifier circuit 2 and the video
detection circuit 3, and is separated from the video signal by the video detection circuit 3 The
signal is output from the audio output terminal 9 through the processing circuit 7 and the
volume control circuit 8.
[0022]
Here, when the volume operation button 12-A in the input operation unit 12 is operated,
increase or decrease of the volume is transmitted to the volume control circuit 8 through the
sound switching means 13-D and the volume control means 13-A. The volume of the sound
output to the output terminal 9 is adjusted, and the information of the operated volume is
transmitted to the volume display processing circuit 13-E, and the processing of the volume
display processing circuit 13-E is processed as R /. The on-screen display is made on the screen
of the CRT 6 via the G / B character drive circuits 13 -R, 13 -G and 13 -B.
[0023]
Further, when the voice switching button 12-B in the input operation unit 12 is pressed, the
volume is fixed to a certain value in the voice switching unit 13-D, and the volume fixed by the
voice switching unit 13-D is volume controlled. The information is transmitted to the volume
control circuit 8 through the means 13-A and output to the audio output terminal 9, and
information of the fixed volume is transmitted to the volume display processing circuit 13-E, and
the volume display processing circuit 13-E The processed signals are displayed on screen that
the volume is fixed on the screen of the CRT 6 via the R / G / B character drive circuits 13-R, 13G, 13-B.
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6
[0024]
As a display example, “FIXED AUDIO, OUT” or the like can be considered.
At this time, the volume operated by the volume operation button 12 -A is not interlocked with
the volume output from the audio output terminal 9.
[0025]
(Embodiment 3) FIG. 3 is a block diagram showing the main part of an apparatus provided with a
speaker and an audio output device according to a third embodiment of the present invention.
[0026]
In FIG. 3, an audio signal is 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.
[0027]
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 voice output switching button 12-A and the volume control button 12-B are operated,
the voice switching unit 13-D, the volume control unit 13-A and the speaker switching control
unit 10 in the microcomputer 13 operate to control the volume control. While controlling the
circuit 8 and the speaker output switching circuit 11, volume information is sent to the audio
display processing circuit 13-E, and via the audio display processing circuit 13-E and the 7
segment LED display drive circuit 13-F. It is displayed by 7 segment LED.
[0028]
Next, the operation of the above configuration will be described.
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First, an 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.
[0029]
Here, when the volume operation button 12-A in the input operation unit 12 is operated,
increase or decrease of the volume is transmitted to the volume control circuit 8 through the
sound switching means 13-D and the volume control means 13-A. The volume of the sound
output to the output terminal 9 and the speaker 10 is adjusted.
[0030]
Also, every time the audio switching button 12-B in the input operation unit 12 is pressed once,
the speaker 10 is turned on in the audio switching means 13-D, and the audio output terminal 9
and the speaker 10 are operated with the volume operating button 12-A. When the value of the
volume operated at step is output, when the speaker 10 is turned off and the value of the volume
operated by 12-A is output by the sound volume operation button only, and when the speaker 10
is turned off The sound volume control means 13-A and the speaker output switching means are
sequentially selected in the case where the value of the sound volume output from the sound
output terminal 9 is fixed to a certain value regardless of the value operated by the volume
operation button 12-A. It is directed to 13-C.
[0031]
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 circuit 13-C
determines whether the speaker 10 is turned on or off by the speaker output switching circuit
The signal is transmitted to the voice output terminal 9 and the speaker 10.
[0032]
At the same time, information as to 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 and
processed by the volume display processing circuit 13-E. 7 segment LED display drive circuit 13F to output the information of the speaker on or off in the 7 segment LED, the volume
information when the volume is changed, the volume information when fixed, It is displayed that
it is fixed.
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8
[0033]
(Embodiment 4) FIG. 4 is a block diagram showing the main components of a television receiver
provided with an audio output device according to a fourth embodiment of the present invention.
[0034]
In FIG. 4, the video signal of the television passes through the tuner 1, the video intermediate
frequency amplifier circuit 2, the video detection circuit 3, the video amplifier circuit 4, and the
video signal display switching circuit 5 and is displayed on the CRT 6.
Further, 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.
[0035]
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 voice output switching button 12-A and the volume control button 12-B are 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. The volume information is sent to the voice
display processing circuit 13-E, and displayed on the screen of the CRT 6 on screen via the R / G
/ B character drive circuits 13-R, 13-G, 13-B. Ru.
[0036]
Next, the operation of the above configuration will be described.
First, it is displayed on the CRT 6 through the tuner 1 input from the antenna, the video
intermediate frequency amplification circuit 2, the video detection circuit 3, the video
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amplification circuit 4 and the video signal display switching circuit 5.
[0037]
Also, the audio signal of the television is input from the antenna as well as the video signal, then
passes through the tuner 1, the video intermediate frequency amplifier circuit 2 and the video
detection circuit 3, and is separated from the video signal by the video detection circuit 3 The
signal is output from the audio output terminal 9 and the speaker 10 through the processing
circuit 7 and the volume control circuit 8.
[0038]
Here, when the volume operation button 12-A in the input operation unit 12 is operated,
increase or decrease of the volume is transmitted to the volume control circuit 8 through the
sound switching means 13-D and the volume control means 13-A. The volume of the sound
output to the output terminal 9 and the speaker 10 is adjusted.
[0039]
Also, every time the audio switching button 12-B in the input operation unit 12 is pressed once,
the speaker 10 is turned on in the audio switching means 13-D, and the audio output terminal 9
and the speaker 10 are operated with the volume operating button 12-A. When the value of the
volume operated at step is output, when the speaker 10 is turned off and the value of the volume
operated by 12-A is output by the sound volume operation button only, and when the speaker 10
is turned off The sound volume control means 13-A and the speaker output switching means are
sequentially selected in the case where the value of the sound volume output from the sound
output terminal 9 is fixed to a certain value regardless of the value operated by the volume
operation button 12-A. It is directed to 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 circuit 13-C
determines whether the speaker 10 is turned on or off by the speaker output switching circuit
The signal is transmitted to the voice output terminal 9 and the speaker 10.
[0040]
At the same time, information as to 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 and
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processed by the volume display processing circuit 13-E. The speaker on / off information and
the volume if the volume is varied on the screen of the CRT 6 via the R / G / B character drive
circuit 13-R, 13-G, 13-B. The information is displayed on-screen that the volume is fixed if it is
fixed.
[0041]
As described above, according to the present invention, the speaker output switch circuit for
switching the speaker output on or off, the speaker output control means for controlling the
speaker output switch circuit, the volume control circuit for controlling the volume, Volume
control means for controlling the volume control circuit, the volume control means and the
speaker output control means are interlocked to turn on or off the speaker output, and when the
speaker is off, the sound output from the audio output terminal is fixed or In the case of a
television receiver provided with audio processing means capable of being made variable and an
audio display control circuit for displaying and outputting the contents processed by the audio
processing means Audio according to the external device connected to the audio output terminal
By making the volume output from the output terminal fixed or variable, one audio output
terminal, which conventionally required two or more, Because you have to useless, it is possible
to realize a low cost.
[0042]
Also, although the conventional volume control and the speaker output control have been
separately operated, providing a sound processing means for interlocking the volume control
means and the speaker output control means enables only one operation, cost reduction and
operability. An improvement can be realized.
[0043]
Brief description of the drawings
[0044]
1 is a block diagram of the main part of the audio output device in the first embodiment of the
present invention
[0045]
2 is a block diagram of an essential part of a television receiver according to a second
embodiment of the present invention.
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[0046]
3 is a block diagram of the main part of the audio output device in the third embodiment of the
present invention
[0047]
FIG. 4 is a block diagram of the main part of a television receiver according to a fourth
embodiment of the present invention.
[0048]
Explanation of sign
[0049]
Reference Signs List 1 tuner 2 video intermediate frequency amplification circuit 3 video
detection circuit 4 video amplification 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 Voice switching button 13
microcomputer 13-A volume control means 13-C speaker output switching means 13-D voice
processing means 13-E voice display processing circuit 13-R R character display drive circuit 13G character display drive circuit 13-B B character display drive circuit 13-F 7 segment LED
display drive circuit 14 7 segment LED display 15 voice input terminal
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