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JP2011061475

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2011061475
The present invention provides a TV receiver capable of adjusting the volume output from a
headphone and a speaker even when headphones are connected, thereby improving usability. A
TV receiver is connectable to headphones, and includes a speaker and a control unit. When the
headphones are connected, the control unit displays the volume adjustment screen V2 and
adjusts the volume output from the speaker and updates the second volume adjustment screen
V2b according to the operation of the volume adjustment button. Then, when the volume output
from the speaker is adjusted to zero, the volume adjustment target is automatically switched
from the speaker to the headphone. Then, in response to the operation of the volume adjustment
button, the control unit adjusts the volume of the sound output from the headphones and
updates the first volume adjustment screen V2a. When the volume output from the headphones
is adjusted to zero, the volume adjustment target is automatically switched from the headphones
to the speaker. [Selected figure] Figure 6
Display device
[0001]
The present invention relates to a display device capable of outputting sound to a speaker or a
headphone.
[0002]
BACKGROUND ART Conventionally, a television (hereinafter referred to as a TV) receiver
provided with a headphone jack for connecting headphones and a speaker is known.
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1
This type of TV receiver generally outputs audio only from the speaker when the headphone jack
of the headphone is not connected to the headphone jack, and outputs audio only from the
headphone when the headphone jack is connected to the headphone jack . Therefore, the user
needs to release the connection between the headphone terminal and the headphone jack when
outputting the sound from the speaker, which is not convenient. In addition, when the headphone
jack is provided on the back of the TV receiver casing, it takes much time to remove the
headphone terminal from the headphone jack, which is more inconvenient for the user.
[0003]
On the other hand, according to Patent Document 1, even when the headphone terminal and the
headphone jack are connected, the control unit operates the audio output selection button to
output the audio to the speaker or the headphone. Discloses a TV receiver which can be
selectively switched to any of the above. However, in this type of TV receiver, when the user
switches the audio output destination and wants to adjust the volume of the audio to be output,
the user operates the audio output selection button and then operates the volume adjustment
button. It is inconvenient to use.
[0004]
Further, Patent Document 2 includes a parent screen and a child screen, and when the "parent
screen sound mode" of the headphone sound selection screen is selected, the sound of the parent
screen is always output to the headphones regardless of the display of the child screen. A TV
receiver is disclosed. However, even this type of TV receiver can not solve the above problem.
[0005]
JP-A-2007-295383 JP-A-6-268940
[0006]
The present invention has been made to solve the above-mentioned problems, and it is possible
to adjust the volume of the sound output from the headphone and the speaker even when the
headphone terminal is connected to the headphone jack. It is an object of the present invention
to provide a television receiver which improves user-friendliness.
09-05-2019
2
[0007]
In order to achieve the above object, the invention according to claim 1 comprises display means
for displaying an image based on a video signal of content, a speaker for outputting an audio
based on an audio signal of content, and an audio based on an audio signal of content An audio
signal output terminal for outputting an audio signal to the headphone, and a volume control
button operated by a user for adjusting the volume of audio output from the speaker and the
headphone And control means for controlling each part of the apparatus, and a display for
outputting an audio from either the speaker or the headphone when the headphone terminal of
the headphone is connected to the audio signal output terminal In the device, the control means
may be configured such that the headphone terminal is the voice. When the volume adjustment
button is operated when it is not connected to the No. output terminal, only the volume of the
sound output from the speaker is adjusted according to the operation of the volume adjustment
button, and the headphone terminal serves as the audio signal. When the sound volume
adjustment button is operated when connected to an output terminal, the sound volume output
from any one of the speaker and the headphone is adjusted according to the operation of the
sound volume adjustment button, and When the volume of the sound output from any one of the
headphones is adjusted to zero, the adjustment target of the volume by the operation of the
volume adjustment button is automatically from the speaker to the headphone or the headphone
to the speaker Switching to
[0008]
The invention according to claim 2 is the display device according to claim 1, wherein the control
means controls the volume of the sound output from the speaker when the headphone terminal
is not connected to the audio signal output terminal. A second volume adjustment indicating the
volume of the sound output from the speaker and the headphone when the first volume
adjustment screen shown is displayed on the display means and the headphone terminal is
connected to the audio signal output terminal The screen is displayed on the display means.
[0009]
According to the invention of claim 1, when the volume adjustment button is operated when the
headphone terminal is connected to the audio signal output terminal, output is made from either
one of the speaker and the headphone according to the operation of the volume adjustment
button. Volume is adjusted.
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Then, when the volume of the sound output from any one of the speaker and the headphone is
adjusted to zero, the adjustment target of the volume by the operation of the volume adjustment
button is automatically switched from the speaker to the headphone or from the headphone to
the speaker .
Therefore, even in the state where the headphone terminal is connected to the audio signal
output terminal, the user only operates the volume adjustment button without operating the
button or the like for switching the audio output destination to either the speaker or the
headphone. The audio output destination can be automatically switched to either the speaker or
the headphone, and the volume of the audio output from the speaker or the headphone can be
adjusted, which is convenient for the user.
[0010]
According to the invention of claim 2, when the headphone terminal is not connected to the
audio signal output terminal, the first volume adjustment screen is displayed on the display
means, and when the headphone terminal is connected to the audio signal output terminal, 2
Display the volume adjustment screen on the display means.
Therefore, the user can visually recognize the volume of the output voice, which is convenient for
the user.
[0011]
BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the television
receiver which concerns on one Embodiment of this invention, and the headphone connected to
this television receiver.
The block diagram which shows the internal structure of the said television receiver. Explanatory
drawing which shows schematic structure of the circuit relevant to the audio | voice output
process of the said television receiver. The flowchart which shows the procedure of the audio |
voice output process of the said television receiver. Explanatory drawing which shows an
example of the sound volume adjustment screen displayed on the display of the said television
receiver. Explanatory drawing which shows another example of the sound volume adjustment
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screen displayed on the display of the said television receiver. Explanatory drawing which shows
another example of the sound volume adjustment screen displayed on the display of the said
television receiver. The flowchart which shows the procedure of the volume adjustment process
in the said audio | voice output process.
[0012]
Hereinafter, a television receiver (display device) according to an embodiment of the present
invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 shows the appearance of a
television (hereinafter referred to as “TV”) receiver 1 to which headphones 3 can be
connected, and FIG. 2 shows the internal configuration of the TV receiver 1.
[0013]
The TV receiver 1 has a housing 10 for storing each part of the device, a display (display means)
11 for displaying an image based on a video signal of content such as a TV program, and a
speaker for amplifying an audio signal of content such as a TV program. An amplifier 12, a
speaker 13 for outputting sound, a headphone jack (audio signal output terminal) 14, and a tuner
unit 15 for receiving a TV program based on a broadcast signal distributed from a broadcast
station.
[0014]
The TV receiver 1 also stores a remote control signal receiving unit 16 for receiving an operation
signal transmitted from the remote control device (operation means) 2, a control unit (control
means) 17 for controlling each part of the device, and a program. And a memory 18.
[0015]
The remote control device 2 is operated by the user, and a volume up button (volume adjustment
button) 21 and a volume down button (volume adjustment button) 22 for adjusting the volume of
sound output from the speaker 13 and the headphone 3 It has a plurality of operation buttons
(not shown) for performing operation instructions.
Further, remote control device 2 further includes a remote control signal transmission unit 23
for transmitting an operation signal according to an operation by the user to TV receiver 1.
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[0016]
The headphones 3 have a headphone terminal 31 for attaching to the headphone jack 14, and
are connected to the TV receiver 1 by attaching the headphone terminal 31 to the headphone
jack 14.
[0017]
The speaker 13 is incorporated in the housing 10 and outputs sound based on the sound signal
amplified by the speaker amplifier 12.
The headphone jack 14 is provided to be exposed to the outside of the housing 10 and outputs
an audio signal to the connected headphones 3.
[0018]
The control unit 17 has a CPU 17a that executes a program and the like, and an AUDIO-LSI 17b
that extracts an audio signal from content data such as a TV program.
When the headphone terminal 31 of the headphone 3 is connected to the headphone jack 14, the
control unit 17 controls so that one of the speaker 13 and the headphone 3 outputs an audio. In
addition, the control unit 17 causes the display 11 to display an on-screen display (OSD) on a
volume adjustment screen that visually indicates the volume according to the output destination
of the sound and the volume to be output.
[0019]
The CPU 17a performs processing of detecting presence / absence of connection between the
headphone terminal 31 of the headphone 3 and the headphone jack 14, and transmission
processing of a control signal for instructing the output destination of the audio signal to the
AUDIO-LSI 17b. The AUDIO-LSI 17 b outputs an audio signal to the headphone jack 14 or the
speaker amplifier 12 according to the control signal transmitted from the CPU 17 a.
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[0020]
Next, with reference to FIG. 3, a circuit configuration relating to processing for detecting
connection between the headphone terminal 31 of the headphone 3 and the headphone jack 14
by the CPU 17a and audio output processing for outputting an audio signal to the headphone 3
or the speaker 13 will be described. Explain. C1 to C6 shown in FIG. 3 indicate DC cut capacitors,
R1 to R3 indicate resistances, L1 and L2 indicate buses for transmitting control signals, VCC
indicates a power supply, and A1 and A2 indicate spring members. Indicated, B1 and B2 indicate
contacts. Further, L3 and L4 each indicate a line connected to the ground (hereinafter referred to
as a ground line). FIG. 3 shows the state before the headphone terminal 31 is connected to the
headphone jack 14.
[0021]
The AUDIO-LSI 17 b has terminals SP-R and SP-L for outputting an audio signal to the speaker
amplifier 12 and terminals HP-R and HP-L for outputting an audio signal to the headphone jack
14.
[0022]
When the headphone terminal 31 is not connected to the connection port 14a of the headphone
jack 14, the contact B1 and the contact B2 are in contact with the ground lines L3 and L4,
respectively. Input to port.
The CPU 17a determines that the headphone terminal 31 of the headphone 3 is not connected to
the connection port 14a of the headphone jack 14 when a low level signal is input.
[0023]
Then, at that time, the CPU 17a transmits a control signal instructing to output an audio signal to
the speaker amplifier 12 to the AUDIO-LSI 17b via the buses L1 and L2. The AUDIO-LSI 17b
having received the control signal outputs an audio signal to the speaker amplifier 12, and the
audio signal received by the speaker amplifier 12 is amplified and output to the speaker 13,
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whereby the audio is output from the speaker 13.
[0024]
When the headphone terminal 31 is connected to the connection port 14a of the headphone jack
14, the spring member A1 and the spring member A2 are respectively pressed by the headphone
terminal 31, and the contact B1 and the contact B2 each have ground lines L3 and L4 circuits.
Since the current does not flow in the line L6 by leaving, a high level signal having the same
potential as the power supply VCC is input to the GPIO port of the CPU 17a. The CPU 17a
determines that the headphone terminal 31 of the headphone 3 is connected to the connection
port 14a of the headphone jack 14 when a high level signal is input.
[0025]
Then, at that time, the CPU 17a transmits a control signal instructing to output an audio signal to
the headphone 3 or the speaker 13 according to the operation instruction by the user to the
AUDIO-LSI 17b via the buses L1 and L2. The AUDIO-LSI 17b having received this control signal
outputs an audio signal to the speaker amplifier 12 or the headphone jack 14, and the audio
signal received by the speaker amplifier 12 is output to the speaker 13, or the headphone 3 is
output from the headphone jack 14. Output voice based on voice signal.
[0026]
Next, audio output processing by the control unit 17 will be described with reference to FIGS. 4
to 7. FIG. 4 shows the procedure of the audio output process, and FIGS. 5 to 7 show an example
of the volume adjustment screen which is OSD-displayed on the display 11 and visually shows
the volume.
[0027]
First, the control unit 17 determines whether or not the headphone terminal 31 of the
headphone 3 is connected to the headphone jack 14 (S1), and when it is not connected (NO in
S2), the volume adjustment screen shown in FIG. (First sound volume adjustment screen) V1 is
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8
displayed on the display 11 (S3). The volume adjustment screen V1 indicates the volume of the
sound output from the speaker 13. The volume adjustment screen V1 shown in FIG. 5 shows the
case where the volume is "60" as an example.
[0028]
Then, the control unit 17 adjusts the volume of the sound output from the speaker 13 and
adjusts the volume displayed on the display 11 in accordance with the operation of the volume
up button 21 and the volume down button 22 of the remote control device 2 by the user. The
display of the screen V1 is updated (S4).
[0029]
On the other hand, when the headphone terminal 31 of the headphone 3 is connected to the
headphone jack 14 (YES in S2), the control unit 17 displays the volume adjustment screen
(second volume adjustment screen) V2 shown in FIG. (S5).
The volume adjustment screen V2 includes a first volume adjustment screen V2a indicating the
volume of the sound output from the headphones 3 and a second volume adjustment screen V2b
indicating the volume of the sound output from the speaker 13. In the example shown in FIG. 6,
the first volume adjustment screen V2a indicates that the volume output from the headphones 3
is "60", and the second volume adjustment screen V2b indicates that the volume output from the
speaker 13 is "0". Indicates a case.
[0030]
Then, in response to the user's operation of the volume up button 21 and the volume down
button 22 of the remote control device 2, the control unit 17 adjusts the volume of the sound
output from the speaker 13 or the headphone 3 and adjusts the volume of the volume
adjustment screen V 2. A volume adjustment process for updating the display is performed (S6).
The control unit 17 may display the volume adjustment screen V3 illustrated in FIG. 7 on the
display 11 instead of the volume adjustment screen V2 illustrated in FIG. The volume adjustment
screen V3 includes a first volume adjustment screen V3a indicating the volume of the sound
output from the headphones 3 and a second volume adjustment screen V3b indicating the
volume of the sound output from the speaker 13. In the example shown in FIG. 7, the first
volume adjustment screen V3a shows the case where the volume output from the headphones 3
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is "60", and the second volume adjustment screen V3b shows the volume output from the
speaker 13 "0". Indicates the case of
[0031]
Next, the details of the volume adjustment processing will be described with reference to the
flowchart shown in FIG. Here, it is assumed that in the state where the volume adjustment screen
V2 is displayed on the display 11, the volume of the sound output from the speaker 13 is first
adjusted by the operation of the remote control device 2 by the user.
[0032]
First, the control unit 17 adjusts the volume of the sound output from the speaker 13 in
accordance with the user's operation of the volume up button 21 and the volume down button
22 of the remote control device 2, and displays the second volume adjustment screen V2b. Is
updated (S11). Then, when the volume output from the speaker 13 is adjusted to zero by the user
operating the volume up button 21 and the volume down button 22 of the remote control device
2 (YES in S12), the control unit 17 selects the volume adjustment target Are automatically
switched from the speaker 13 to the headphones 3 (S13). Specifically, the CPU 17a of the control
unit 17 transmits a control signal to the AUDIO-LSI 17b, whereby the AUDIO-LSI 17b switches
the output destination of the audio signal from the speaker amplifier 12 to the headphone jack
14.
[0033]
Then, in response to the user's operation of the volume up button 21 and the volume down
button 22 of the remote control device 2, the control unit 17 adjusts the volume of the sound
output from the headphones 3 and displays the first displayed on the display 11. The display of
the volume adjustment screen V2a is updated (S14). In this state, when the volume output from
the headphone 3 is adjusted to zero by the user's operation of the volume up button 21 and the
volume down button 22 of the remote control device 2 (YES in S15), the control unit 17 The
adjustment target is automatically switched from the headphone 3 to the speaker 13 (S16).
Specifically, the CPU 17a of the control unit 17 transmits a control signal to the AUDIO-LSI 17b,
whereby the AUDIO-LSI 17b switches the output destination of the audio signal from the
headphone jack 14 to the speaker amplifier 12. In this process, it is assumed that the volume of
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10
the sound output from the speaker 13 is first adjusted by the user's operation of the remote
control device 2 in advance, but it is output by the user from the headphones 3 in advance. If it is
set to adjust the sound volume, the process starts from S14 shown in FIG.
[0034]
As described above, according to the TV receiver 1 according to this embodiment, the control
unit 17 operates the volume up button 21 or the volume down button 22 of the remote control
device 2 when the headphone terminal 31 is connected. Then, according to this operation, the
volume output from any one of the speaker 13 and the headphones 3 is adjusted. Then, when the
volume of the sound output from any one of the speaker 13 and the headphones 3 is adjusted to
zero, the adjustment target of the volume by the operation of the volume up button 21 or the
volume down button 22 is displayed from the speaker 13 to the headphones 3. , Or automatically
switch from the headphone 3 to the speaker 13. Therefore, even when the headphone terminal
31 is connected to the headphone jack 14, the volume up button 21 and the volume are selected
without the user operating a button or the like for switching the audio output destination to
either the speaker 13 or the headphone 3. The audio output destination can be automatically
switched to either the speaker 13 or the headphone 3 simply by operating the down button 22,
and the volume of the sound output from the speaker 13 or the headphone 3 can be adjusted. ,
User-friendly.
[0035]
Further, when the headphone terminal 31 of the headphone 3 is not connected to the headphone
jack 14, the volume adjustment screen V1 is displayed on the display 11, and when the
headphone terminal 31 of the headphone 3 is connected to the headphone jack 14, the volume
adjustment screen V2 is displayed on the display 11. Therefore, the user can visually recognize
the volume of the output voice, which is convenient for the user.
[0036]
In addition, since the volume when the output destination of the sound is switched from the
speaker 13 to the headphone 3 or the headphone 3 is zero, so-called "pop noise" uncomfortable
for the user when switching the output destination of the sound. Can be prevented from being
output.
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[0037]
The present invention is not limited to the configuration of the above embodiment, and various
modifications can be made without departing from the scope of the invention.
For example, in the above embodiment, an example in which the display device in the claims is a
TV receiver is shown, but the present invention may be applied to a monitor device without a TV
program reception function.
[0038]
1 TV receiver (display device) 2 remote control device (operation means) 3 headphones 11
display (display means) 13 speaker 14 headphone jack (audio signal output terminal) 17 control
section (control means) 21 volume up button (volume adjustment button) 22 Volume down
button (volume adjustment button) V1 Volume adjustment screen (first volume adjustment
screen) V2 volume adjustment screen (second volume adjustment screen)
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