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JP2006109241

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DESCRIPTION JP2006109241
An apparatus capable of causing a plurality of viewers to view at an arbitrary viewing position is
provided. SOLUTION: Two types of television images are simultaneously displayed on a display
unit 19, and two types of television audio are associated with the respective television images,
left-image high directivity speakers 22L and 22R, right-image high directivity Are respectively
output from the speaker 23L and 23R. Then, by the drive operation of the drive units 27L, 27R,
28L and 28R, the direction of each high directivity speaker is changed so that the changed audio
output ranges do not overlap each other at the two viewing positions. [Selected figure] Figure 2
Audio output device, video display device
[0001]
The present invention relates to an audio output device that is used in a video display device or
the like that simultaneously displays a plurality of videos and that outputs different sounds to a
plurality of users.
[0002]
A device is known that has a plurality of high directivity speakers arranged side by side, displays
a plurality of images simultaneously on the screen, and outputs a plurality of sounds
corresponding to each of the plurality of images from the respective speakers. (Patent Document
1).
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1
With this device, when a plurality of users view different television programs simultaneously, the
respective users can view the programs without receiving audio interference with each other.
[0003]
JP 2000-152123 A
[0004]
In the device of Patent Document 1, the range in which the sound from each speaker is not
interfered with each other is limited, and the range is fixed with respect to the screen.
Therefore, each user has to watch a television program at a viewing position within a limited
fixed range, which causes a problem of inconvenient use. Therefore, there is a need for an
apparatus capable of causing a plurality of viewers to view at an arbitrary viewing position.
[0005]
The voice output device according to the invention of claim 1 outputs a plurality of voices, and
narrow range voice output means for outputting each voice to a different narrow output range,
and a plurality of voices output by the narrow range voice output means. And output direction
changing means for changing the output direction of each voice so as not to interfere with each
other at the viewing position. According to a second aspect of the present invention, in the audio
output device according to the first aspect, the narrow-range audio output means outputs each
audio from a plurality of adjacent speakers in different narrow output ranges. The invention
according to claim 3 is the audio output device according to claim 2, wherein the narrow-range
audio output means outputs a plurality of voices in a predetermined output range predetermined
based on its own direction, a plurality of high directivity points close to each other The audio
output control means for outputting different voices to the high directivity speakers, and the
output direction changing means performs drive operation for changing the direction of the high
directivity speakers; And controlling means for changing the output direction of each sound
outputted by each high directivity speaker so that the output range after the change does not
overlap each other at a plurality of viewing positions by controlling the driving operation of the
driving means. It is supposed to have. The invention according to claim 4 is the audio output
device according to any one of claims 1 to 3, further comprising viewing position detection
means for detecting a viewing position, and the output direction changing means is detected by
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the viewing position detection means. The output direction of each sound is changed based on
the viewing position. According to the invention of claim 5, in the audio output apparatus
according to claim 4, the viewing position detection means detects the direction in which the
wireless signal from the external remote control has been transmitted, and detects the viewing
position based on the direction. The According to the invention of claim 6, in the audio output
device according to any one of claims 1 to 5, the narrow-range audio output means outputs a
plurality of sounds having the same content but different volume. According to the invention of
claim 7, in the audio output device according to any one of claims 1 to 5, the narrow-range audio
output means outputs a plurality of audios having the same content but different tone
characteristics. According to an eighth aspect of the present invention, in the voice output device
according to any one of the first to fifth aspects, the narrow-range voice output means outputs a
plurality of voices which use different languages. The invention according to claim 9 is the audio
output device according to any one of claims 1 to 8, wherein wide-range audio output means for
outputting voice in an output range wider than the output range of each voice output by the
narrow-range audio output means And a voice output switching means for switching between the
narrow range voice output means and the wide range voice output means and outputting the
voice, and outputting the voice from the other.
The video display apparatus according to the invention of claim 10 comprises the audio output
apparatus according to any one of claims 1 to 9 and a video display means for displaying a video,
and is narrow in correspondence with the video displayed by the video display means. A plurality
of voices are output from the range voice output means. The invention according to claim 11 is
the video display apparatus according to claim 10, wherein the video display means
simultaneously displays a plurality of videos, and narrow range audio output means in
association with the plurality of videos simultaneously displayed by the video display means. A
plurality of voices are output.
[0006]
According to the present invention, the plurality of sounds are output in different narrow output
ranges, and the output directions of the respective sounds are changed so that the respective
sounds do not interfere with each other at the plurality of viewing positions. Since this is done, it
is possible to make a plurality of viewers view at an arbitrary viewing position.
[0007]
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3
A block diagram of a video display device according to an embodiment of the present invention is
shown in FIG. This video display device simultaneously displays two types of television video in
one screen, and also makes two types of television audio associated with each television video,
for two arbitrarily determined viewing positions. Output so as not to interfere with each other.
Thus, two viewers can simultaneously view different television programs. The image display
apparatus of FIG. 1 includes a main body unit 1 and two remote controls of a left screen remote
control 2 and a right screen remote control 3.
[0008]
The left screen remote control 2 is operated by a viewer (referred to as a viewer A) at the viewing
position on the left side of the main unit 1. The right screen remote controller 2 is operated by
the other viewer (referred to as a viewer B) at the viewing position on the right side of the main
unit 1. The left screen remote control 2 and the right screen remote control 3 are provided with
operation members such as various operation buttons and operation switches, and when the
operation members are operated by the viewer A or B, the main body 1 Sends an operation signal
to convey the operation content. When the operation signal is received by the remote control
reception unit 25 of the main body unit 1, various operations as described later are performed
based on the instruction content from the viewer.
[0009]
The main unit 1 is connected to a television antenna (not shown). The RF signal for television
received at the television antenna is input to the distributor 11 of the main unit 1. The distributor
11 divides the RF signal into two, and outputs the RF signal as an RF signal A and an RF signal B
to the left screen tuner unit 12 and the right screen tuner unit 13, respectively.
[0010]
The left screen tuner unit 12 selects a television channel designated by the viewer A by operating
the left screen remote controller 2, and extracts a video signal and an audio signal for the
television channel from the RF signal A. The extracted video signal (referred to as video signal A)
and the audio signal (referred to as audio signal A) are output to the left screen video processing
unit 14 and the left screen audio processing unit 15, respectively. Similarly, the right screen
tuner unit 13 selects a television channel designated by the viewer B by operating the right
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4
screen remote controller 3 and extracts a video signal and an audio signal for the television
channel from the RF signal B. The extracted video signal (referred to as video signal B) and audio
signal (referred to as audio signal B) are output to the right screen video processing unit 16 and
the right screen audio processing unit 17, respectively. At this time, the viewers A and B may
designate different television channels to the left screen tuner unit 12 and the right screen tuner
unit 13 or may designate the same television channel.
[0011]
The left screen video processing unit 14 outputs the video signal A output from the left screen
tuner unit 12 to the screen combining unit 18 after performing predetermined image adjustment
processing and the like. Similarly, the right screen video processing unit 16 outputs the video
signal B output from the right screen tuner unit 13 to the screen combining unit 18 after
performing predetermined image adjustment processing and the like. Based on the input video
signals A and B, the screen combining unit 18 performs a screen combining process for
simultaneously displaying a video of these video signals in one screen, and generates a combined
screen signal to display the display unit 19. Output to By displaying the composite screen signal
on the display unit 19, the video of the television channel selected by the viewer A is displayed
on the left side of the screen, and at the same time, the video of the television channel selected by
the viewer B is displayed on the right side of the screen . The display unit 19 can use various
types of display devices such as a liquid crystal display, a CRT, a plasma display, and a projector.
[0012]
The left screen audio processing unit 15 separates the audio signal A output from the left screen
tuner unit 12 into an audio signal for L channel of stereo audio and an audio signal for R
channel, and outputs it to the amplifier unit 20 Do. Similarly, the right screen audio processing
unit 17 also separates the audio signal B output from the right screen tuner unit 13 into an audio
signal for L channel and an audio signal for R channel, and outputs it to the amplifier 20. The
amplification unit 20 amplifies each of these audio signals, and outputs the amplified audio
signal to the audio output switching unit 21.
[0013]
The voice output switching unit 21 receives the instruction from the amplification unit 20 based
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on an instruction from the viewer A by the operation of the left screen remote controller 2 or an
instruction from the viewer B by the operation of the right screen remote controller 3. Switch the
output destination of each audio signal. One of the output destinations of each audio signal is the
left screen high directivity speakers 22L and 22R and the right screen high directivity speakers
23L and 23R. At this time, the L channel and R channel of the audio signal A are output to the
left screen high directivity speakers 22L and 22R, respectively, and the L channel and R channel
of the audio signal B are output in the right screen high directivity speakers 23L and 23R. Each is
output to Thus, the high directivity speakers 22L, 22R, 23L and 23R output different sounds
respectively.
[0014]
The other output destination of each audio signal is the speakers 24L and 24R. One L channel of
audio signal A or B is output to the speaker 24L, and one R channel of audio signal A or B is
output to the speaker 24R. Note that which of the audio signals A and B is to be output can be
switched by the viewer A or B operating the left screen remote control 2 or the right screen
remote control 3.
[0015]
The left screen high directivity speakers 22L and 22R are provided for outputting to the viewer A
audio signals corresponding to the video displayed on the screen on the left side of the display
unit 19, that is, audio signals A. High directivity speaker. The L channel of the audio signal A is
output to the left screen high directivity speaker 22L, and the R channel of the audio signal A is
output to the left screen high directivity speaker 22R. Similarly, the high-directivity speakers 23L
and 23R for the right screen output to the viewer B an audio signal corresponding to the video
displayed on the screen on the right side of the display unit 19, that is, an audio signal B. It is a
high directivity speaker. The L channel and the R channel of the audio signal B are respectively
output to the right screen high directivity speakers 23L and 23R.
[0016]
The left screen high directivity speakers 22L and 22R and the right screen high directivity
speakers 23L and 23R perform a swing operation by the drive operation of the drive units 27L,
27R, 28L and 28R. By this swinging operation, the orientations of the above-mentioned high
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directivity speakers are respectively changed in the left and right direction. This point will be
described in detail later.
[0017]
In addition, the high directivity speaker described above is a speaker which can output an audio |
voice, limiting to the predetermined | prescribed output range narrower than a normal speaker.
This output range is predetermined as the directivity of the speaker, and is represented by an
angular range based on the direction in which the speaker is facing. For example, in the case of a
high directivity speaker having a directivity of 20 °, it is possible to output sound limited within
an angle range of ± 10 ° centering on the direction. Audio can be heard only within this output
range, and no audio can be heard outside this range. Such a high directivity speaker is also called
a superdirective speaker, and a speaker disclosed in, for example, JP-A-2004-112212 is known.
[0018]
The speakers 24L and 24R are normal speakers different from the high directivity speakers
described above. Audio can be output to a wide output range around the installation position of
the main body 1 based on any one of the audio signals A and B selected by the speakers 24L and
24R.
[0019]
The remote control reception unit 25 receives the operation signal transmitted from the left
screen remote control 2 or the right screen remote control 3 as described above, and outputs the
operation signal to the control unit 26. Furthermore, it detects the receiving direction of the
operation signal and outputs the detection result to the control unit 26. The detection result of
the reception direction of the operation signal is used to output a speaker drive control signal in
the control unit 26 as described later. By detecting the reception direction of the operation signal
in this manner, the remote control reception unit 25 detects the viewing positions of the viewers
A and B.
[0020]
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7
Remote control receiver 25 can detect the reception direction of the operation signal, for
example, as follows. The left screen remote control 2 and the right screen remote control 3
transmit the operation signal as an infrared signal. The remote control receiver 25 is provided
with a lens and a CCD element, and forms an image of the operation signal inputted through the
lens on the CCD element. The receiving direction of the operation signal can be determined by
the image forming position on the CCD at this time. Note that the method described here is
merely an example, and other methods may be used. For example, a plurality of infrared light
receiving elements can be arranged side by side, and the reception direction can be calculated
using the difference in detection time in each. Various methods can be used other than those
described above.
[0021]
Control unit 26 determines the content of the instruction from viewers A and B based on the
operation signal output from remote control reception unit 25, and outputs various control
signals to each unit in main unit 1 according to the content of the instruction. Do. For example, a
control signal for selecting a designated television channel is output to the left screen tuner unit
12 or the right screen tuner unit 13. At this time, a control signal is output to the left screen
tuner unit 12 if it is an operation signal from the left screen remote controller 2, and a control
signal is sent to the right screen tuner unit 13 if it is an operation signal from the right screen
remote controller 3. Output. Similarly, in order to switch the audio output destination, a control
signal is output to the audio output switching unit 21 or a control signal is output to the
amplification unit 20 in order to change the audio volume.
[0022]
Here, by operating the left screen remote control 2, the viewer A instructs the left screen high
directivity speakers 22L and 22R to output voice toward the viewing position of the viewer A.
Can. At this time, the control unit 26 outputs a control signal for controlling the drive operation
of the drive units 27L and 27R based on the reception direction of the operation signal detected
by the remote control reception unit 25. By this control signal, the drive operation of the drive
units 27L and 27R is controlled such that the direction of the left screen high directivity speakers
22L and 22R coincides with the reception direction of the operation signal.
[0023]
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8
Similarly, when the viewer B operates the right screen remote control 3 and instructs the audio
from the right screen high directivity speakers 23L and 23R to be output toward the viewing
position of the viewer B, the control unit 26 Control signals are output to the drive units 28L and
28R. Then, the drive operation of the drive units 28L and 28R is controlled such that the
orientations of the right screen high directivity speakers 23L and 23R coincide with the
reception direction. The control signal output from the control unit 26 to the drive units 27L and
27R or 28L and 28R as described above is hereinafter referred to as a speaker drive control
signal. Drive units 27L, 27R, 28L and 28R are all realized using, for example, a rotary motor or
the like.
[0024]
As described above, the two television videos are simultaneously displayed side by side in the one
screen on the display unit 19. Furthermore, based on the reception direction of the operation
signal from the left screen remote control 2 and the right screen remote control 3, the left screen
high directivity speakers 22L and 22R and the right screen high directivity speakers 23L and
23R are respectively necked It shakes and its voice output range is changed.
[0025]
An external view of the main body 1 is shown in FIG. (A) shows a plan view and (b) shows a front
view. A left screen high directivity speaker 22L for outputting L channel sound and a right screen
high directivity speaker 23L are disposed on the left side of the display unit 19, and an R channel
sound is output on the right side. The left screen high directivity speaker 22R and the right
screen high directivity speaker 23R are disposed. As described above, the left screen high
directivity speaker 22L and the right screen high directivity speaker 23L, and the left screen high
directivity speaker 22R and the right screen high directivity speaker 23R are disposed in
proximity to each other. ing. Drive units 27L, 27R, 28L, and 28R are disposed under the high
directivity speakers, respectively, and these high directivity speakers perform a swinging
operation. The speakers 24L and 24R are arranged at the lower side of the display unit 19 side
by side.
[0026]
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9
A remote control reception unit 25 is disposed on the top of the display unit 19. In the screen of
the display unit 19, separate television images respectively indicated by reference numerals 30L
and 30R are displayed. Of the components shown in FIG. 1, components incorporated in the main
unit 1, such as the control unit 26, are not shown in FIG. 2. Moreover, since each structure
arrangement | positioning shown in FIG. 2 is an example, you may be arrangement | positionings
other than this.
[0027]
A state in which the voice output direction is changed by swinging the left screen high directivity
speakers 22L and 22R and the right screen high directivity speakers 23L and 23R is shown in
FIG. (A) shows the situation when the audio output direction of the left screen high directivity
speakers 22L and 22R is changed toward the viewing position of the viewer A. Arrows 32Lc and
32Rc indicated by solid lines respectively indicate centers of directions of the left screen high
directivity speakers 22L and 22R. The broken lines 32Ll and 32Lr respectively indicate the
output range of the sound output by the left screen high directivity speaker 22L, and the broken
lines 32Rl and 32Rr indicate the sound output range of the left screen high directivity speaker
22R. The output range is shown respectively. That is, the sound from the left screen high
directivity speaker 22L is output within the range between the dashed lines 32L1 and 32Lr
around the arrow 32Lc, and the voice is sandwiched between the dashed lines 32R1 and 32Rr
around the arrow 32Rc. The sound from the left screen high directivity speaker 22R is output
within the range.
[0028]
When the viewer A instructs the main unit 1 to output voice toward the viewing position using
the left screen remote control 2, as shown by arrows 32Lc and 32Rc in (a), for the left screen The
high directivity speakers 22L and 22R are directed toward the viewer A. As a result, the output
direction is changed so that the audio output ranges from the left screen high directivity
speakers 22L and 22R come around the viewing position of the viewer A, and the range between
the dashed lines 32Ll and 32Lr and the dashed line 32Rl The sound of the sound signal A is
output in the range sandwiched by and 32Rr.
[0029]
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10
FIG. 3B shows a state in which the audio output range of the right screen high directivity
speakers 23L and 23R is changed toward the viewing position of the viewer B. FIG. Similarly to
(a), arrows 33Lc and 33Rc indicated by solid lines indicate the directions of the high directivity
speakers 23L and 23R, respectively. Further, broken lines 33Ll and 33Lr respectively indicate
the output range of the sound outputted by the right screen high directivity speaker 23L, and the
broken lines 33Rl and 33Rr indicate the output range of the sound outputted by the right screen
high directivity speaker 23R Respectively. That is, the sound from the right screen high
directivity speaker 23L is output within the range between the broken lines 33L1 and 33Lr
centered on the arrow 33Lc, and is sandwiched between the dashed lines 33R1 and 33Rr
centered on the arrow 33Rc. The sound from the right screen high directivity speaker 23R is
output within the range.
[0030]
When the viewer B instructs the main unit 1 to output voice toward the viewing position using
the right screen remote controller 3, in the same manner as described in (a), high directivity for
the right screen The audio output directions from the dynamic speakers 23L and 23R are
changed. That is, as shown by arrows 33Lc and 33Rc in (b), the right screen high directivity
speakers 23L and 23R are directed to the viewer B. As a result, the output direction is changed
so that the audio output ranges from the right screen high directivity speakers 23L and 23R
come around the viewing position of the viewer B, and the range between the broken lines 33L1
and 33Lr and the broken line The sound by the sound signal B is output in the range between
33R1 and 33Rr.
[0031]
When the voice output direction is changed as described above, it is preferable that the voices do
not interfere with each other at the respective viewing positions. Specifically, the audio output
range after change by the audio signal A from the left screen high directivity speakers 22L and
22R shown in FIG. 3A and the right screen high directivity speaker shown in FIG. 3B The audio
output range after the change by the audio signal B from 23L and 23R does not overlap each
other in the viewing position of the viewer A and the viewing position of the viewer B. When the
positions of the viewer A and the viewer B are separated to some extent, even if the audio output
range is changed as described above, they do not overlap each other.
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[0032]
However, when the viewer A and the viewer B are located close to each other, changing the audio
output direction as described above, the audio output range after the change by the audio signal
A and the change by the audio signal B And the audio output range of may overlap each other. In
such a case, control is performed so that the voice output direction is changed within the range
not overlapping. For example, the orientation of the left screen high directivity speaker 22L
(arrow 32Lc) or the orientation of the left screen high directivity speaker 22R (arrow 32Rc) and
the orientation of the right screen high directivity speaker 23L (arrow 33Lc) or the right screen
Control is performed so that the angle between the high directivity speaker 23R and the direction
(arrow 33Rc) does not fall below a predetermined lower limit value. By doing this, the sounds can
be prevented from interfering with each other at the viewing position of the viewer A and the
viewing position of the viewer B.
[0033]
Alternatively, when the angle between the arrow 32Lc or the arrow 32Rc and the arrow 33Lc or
the arrow 33Rc is smaller than a predetermined lower limit value, by stopping one of the audio
output, the respective audios do not interfere with each other. You may An appropriate value can
be determined for the lower limit value based on a preset viewing distance. Alternatively, the
lower limit value may be changed according to the detected distance by detecting the distances
from the main unit 1 to the viewer A and the viewer B, respectively.
[0034]
As described above, two types of television video are simultaneously displayed in one screen, and
the two types of television audio associated with each television video are mutually selected at
two arbitrarily determined viewing positions. It can be output so as not to interfere. Thus, viewer
A is comfortable without being disturbed by the television video displayed on the left side of the
screen and its television audio, and viewer B in the television video displayed on the right side of
the screen and its television audio. You can watch it. By using such a video display device, when a
plurality of persons want to view two television programs simultaneously in one room, it
becomes possible to view each video including not only video but also audio. . In addition, since
the direction of the high directivity speaker is automatically controlled to change the audio
output range regardless of where the viewer is in the room, the restriction on the viewing
position can be reduced.
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[0035]
In the above-described video display device, one television program can be viewed by one viewer.
In that case, a television picture can be displayed on the display unit 19 and the television sound
can be output over a wide range from the speakers 24L and 24R, so that it can be used like a
normal television receiver. Alternatively, by using the left screen high directivity speakers 22L
and 22R, or the right screen high directivity speakers 23L and 23R, or a combination of both, it
is possible to use television audio in a narrow output range toward the viewing position. May be
output. In this way, as in the case of using earphones or headphones, it is possible to obtain the
effect that it is not necessary for people around the audience to hear the television sound.
[0036]
Furthermore, by using the left screen high directivity speakers 22L and 22R and the right screen
high directivity speakers 23L and 23R to output different voices for each viewer, one television
program can be viewed by two people. It may be made to watch to a person. For example, audio
of the same content is output at different volume and different tone characteristics according to
each viewer's preference. Alternatively, in a bilingual broadcast program or the like, two types of
sounds, such as Japanese voice and foreign language voice, which use different languages may
be output to each viewer. By doing this, the viewer can specify the audio content according to his
or her preference and view the television program.
[0037]
According to the embodiment described above, the following effects can be obtained. (1) Output
the audio by the audio signal A and the audio by the audio signal B in different narrow output
ranges so that the respective audios do not interfere with each other at the viewing position of
the viewer A and the viewing position of the viewer B We decided to change the output direction
of each voice. Since this is done, the viewer A and the viewer B can view each at any viewing
position.
[0038]
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As described above, when outputting the audio based on the audio signal A and the audio based
on the audio signal B, each audio is output from a plurality of adjacent speakers in different
narrow output ranges. Specifically, the audio output switching unit 21 causes the left screen high
directivity speakers 22L and 22R to output the audio signal A, and causes the right screen high
directivity speakers 23L and 23R to output the audio signal B. As a result, different sounds are
output to the left screen high directivity speaker 22L and the right screen high directivity
speaker 23L which are close to each other, and the left screen high directivity speaker 22R and
the right screen high directivity which are close to each other. Different voices are also output to
the gender speaker 23R. Then, the control unit 26 controls the drive operation of the drive units
27L, 27R, 28L, and 28R so that the changed audio output ranges do not overlap each other at
the viewing position of the viewer A and the viewing position of the viewer B. Change the
direction of the high directivity speaker.
[0039]
(2) The viewing positions of the viewers A and B are detected, and the directions of the high
directivity speakers 22L and 22R for the left screen and the high directivity speakers 23L and
23R for the right screen are changed based on the detected viewing positions. Thus, the output
directions of the audio by the audio signal A and the audio by the audio signal B are respectively
changed. Since this is done, it is possible to automatically change the voice output direction
according to the viewing position and allow the viewer A and the viewer B to view each other.
[0040]
(3) The remote control receiver 25 detects the direction in which the operation signal from the
left screen remote controller 2 and the right screen remote controller 3 has been transmitted,
that is, the reception direction of the operation signal, and viewers A and B We decided to detect
the viewing position of. Since this is done, the viewing positions of the viewers A and B can be
detected easily and reliably.
[0041]
(4) A plurality of voices having the same content but different volumes, or a plurality of voices
having the same content but different tone characteristics, from the high directivity speakers 22L
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and 22R for the left screen and the high directivity speakers 23L and 23R for the right screen
Also, it is possible to output a plurality of voices that use different languages. In this way, the
viewer can specify the audio content and view it according to his / her preference.
[0042]
(5) In the audio output switching unit 21, audio is switched by switching to any one of the left
high-directivity speakers 22L and 22R for the left screen and the high-directivity speakers 23L
and 23R for the right screen or the speakers 24L and 24R, I decided not to output sound from
the other side. Since this is done, the width of the audio output range can be switched according
to the purpose of use and the type of use.
[0043]
(6) Two types of television images are simultaneously displayed on the display unit 19, and two
types of television audio are associated with the respective television images, the left screen high
directivity speakers 22L and 22R, and the right screen high directivity It was decided to output
from the speakers 23L and 23R respectively. Since this is done, the viewer A and the viewer B
can view different television programs simultaneously.
[0044]
In the above embodiment, the video display apparatus which receives the RF signal for television,
simultaneously displays two types of television images in one screen, and simultaneously outputs
two types of television sound has been described. . However, the present embodiment is not
limited to this content, and can be applied to any device as long as video display and audio
output are performed. For example, for a device that performs video display and audio output
based on a video video signal or video audio signal input from the outside, data recorded in
various recording media such as a DVD or a hard disk, data input from the outside, etc. The
present invention can also be applied to a device that performs video display and audio output
based on the above. That is, according to the present invention, various audio-added videos can
be simultaneously viewed by a plurality of viewers.
[0045]
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Furthermore, the present invention can be applied to any apparatus that outputs only audio
without displaying video, such as a radio receiver, as long as it simultaneously outputs a plurality
of audio. That is, in the video display apparatus described in the above embodiment, except for
the part related to screen display, only the part related to audio output is used to interfere with
each other with respect to a plurality of viewing positions arbitrarily determined for a plurality of
sounds. It can be output so as not to Thus, a plurality of viewers can simultaneously hear
different contents of audio.
[0046]
In the above embodiment, an example was described in which two types of video and audio are
simultaneously output to two viewing positions, but three or more types of video and audio are
simultaneously output to three or more viewing positions. It may be output. In that case, the
number of high directivity speakers is determined according to the number of types of voices to
be output simultaneously. At that time, the number of displays and the number of remote
controls may be changed. That is, the present invention can be applied as in the above
embodiment as long as a plurality of video and audio are output.
[0047]
The contents described in the above embodiment are merely examples, and the present invention
is not limited to the contents. Other embodiments considered within the scope of the technical
idea of the present invention are also included within the scope of the present invention.
[0048]
1 is a block diagram of a video display device according to an embodiment of the present
invention. It is an outline view of a main part. It is a figure which shows a mode that an audio |
voice output range is changed by swinging operation | movement of a high directivity speaker.
Explanation of sign
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[0049]
1: Main body 2: Left screen remote control 3: Right screen remote control 11: Distributor 12: Left
screen tuner unit 13: Right screen tuner unit 14: Left screen video processing unit 15: Left
screen audio processing unit 16: right screen video processing unit 17: right screen voice
processing unit 18: screen combining unit 19: display unit 20: amplification unit 21: voice output
switching unit 22L, 22R: high directivity speaker for left screen 23L, 23R: High directivity
speaker 24L for right screen 24L, 24R: Speaker 25: remote control receiver 26: control unit 27L,
27R, 28L, 28R: drive unit
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