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DESCRIPTION JP2008177893

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DESCRIPTION JP2008177893
To listen to audio with headphones without being bothered by audio heard from a speaker
during two-screen display. In a main screen sound attenuation signal generation unit, a phase
control unit 305 generates a signal obtained by inverting the phase of a main screen sound
signal 300 by 180 degrees. The amount of delay of the main screen audio signal is derived based
on the audio system system delay information 302 including the audio transmission system
delay information and the distance information 301 between the television main body 1 and the
remote control device 20, and the position of the remote control device 20. That is, an audio
signal of a phase at which the main screen audio is canceled at the listening position is
generated. Further, the gain control unit 306 performs gain control based on the volume
information 304 of the main screen sound detected by the remote control device 20 described
above, and generates a main screen sound attenuation signal 307. [Selected figure] Figure 5
Multi-screen display television receiver, remote control device and headphone device
[0001]
The present invention relates to a large screen display television receiver having a multi-screen
display function, a remote control device thereof, and a headphone device thereof.
[0002]
In recent years, thin display television receivers such as liquid crystal display television receivers
and plasma display television receivers have become widespread, and further, with the progress
of display panel manufacturing technology, it is possible to increase the screen size, and thin
display television receivers. Increasing the screen size of receivers is in progress.
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[0003]
In addition, multiple television tuners and multiple input terminals are installed in one television
receiver, and multiscreen split display such as two screens (hereinafter represented by two
screens) is also used to take advantage of the features of the large screen display. It is being
provided as a basic function.
The two-screen display function enables one television screen to simultaneously view different
contents.
[0004]
However, when the main image and the sub image are displayed in two screens, usually, only the
sound of the main screen is output from the speaker mounted on the television receiver, and the
sound of the sub screen is output. Can not listen to at the same time.
If it is assumed that the audio of each of the two screens is output from the two-channel speakers
mounted for stereo, the different audios interfere with each other, which is not practical because
it is very difficult to hear.
[0005]
In the techniques described in Patent Documents 1 and 2 below, in order to solve this problem,
the audio signal of the sub screen at the time of split screen display is transmitted wirelessly
from the television main body, and the audio signal receiving device mounted on the remote
control It is possible to receive and output the sound of the sub screen independently of the
sound of the main screen. A headphone terminal is mounted on the audio signal receiving unit,
and the influence of the sound on the main screen is reduced to listen to the audio at the
headphone terminal.
[0006]
JP 2004-187276 JP 2002-158888 JP
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2
[0007]
However, according to the techniques of Patent Documents 1 and 2, although it becomes
possible to hear the sound of the sub screen with the headphones connected to the sound signal
receiving unit, the sound of the main screen is from the speaker mounted on the television main
body Since the audio is output, the sound of the main screen leaks through the headphones and
there is a problem that the sound of the sub screen may be difficult to hear.
[0008]
An object of the present invention is to provide a technology capable of listening to audio with
headphones while being displayed on two screens without being bothered by the audio heard
from the speaker.
[0009]
The present invention is a television receiver capable of two-screen display, and can transmit
voice of one screen side not outputted from a speaker in two-screen display to a remote control
for remotely operating the television receiver, In the two-screen display television receiver with
remote control capable of receiving the audio signal and outputting the audio signal to the
headphone terminal, the speaker when listening to audio for a screen where audio is not output
from the speaker using the headphone Function to reduce voice leakage from
[0010]
In order to reduce leakage of sound from the speaker when listening to the sound for a screen in
which sound is not output from the speaker using headphones, the remote control includes
information for measuring the distance to the television receiver. It has a function of generating
and transmitting a signal combining information obtained by measuring the volume from the
speaker of the television receiver.
[0011]
The headphones have a function of generating and transmitting a signal combining information
for measuring the distance to the television receiver and information obtained by measuring the
volume from the speaker of the television receiver.
[0012]
The television receiver has a function of receiving a signal obtained by combining information for
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measuring the distance and information obtained by measuring the volume from the speaker
from the remote control signal transmitted from the remote control or the headphone; And a
function of generating a signal for attenuating an audio signal from the speaker based on the
received information, mixing it with an audio signal different from the audio output from the
speaker, and transmitting it to a remote control.
[0013]
Further, the remote controller may have an adjustment operation unit for generating the sound
attenuation signal, and may have a function of adjusting the attenuation amount manually.
[0014]
According to the present invention, there is provided a television receiver capable of dual screen
display, wherein audio of one screen side not outputted from a speaker in dual screen display is
transmitted to a remote control for remotely operating the television receiver. In a two-screen
display television receiver with remote control capable of receiving the audio signal and
outputting the audio signal to the headphone terminal, the audio for a screen where audio is not
output from the speaker can be listened using the headphone Sometimes, sound leakage from the
speakers can be reduced.
The user can listen to the sound with the headphone without being bothered by the sound heard
from the speaker during the two-screen display.
[0015]
In addition, since the remote control is provided with an adjustment operation unit for generating
the sound attenuation signal, and has a function of enabling adjustment of the attenuation
amount by manual operation, when the positions of the headphone and the remote control do
not match, If the volume detection result due to noise other than voice is not correct, the function
to reduce the voice from the speaker may not work properly, but the user can adjust the
attenuation amount by manual operation during dual screen display. You can listen to the audio
with headphones without being bothered by the audio you hear from the speakers.
[0016]
Furthermore, since the headphones have a function of generating and transmitting a signal
combining information for measuring the distance to the television receiver and information
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obtained by measuring the volume from the speaker of the television receiver, It becomes
possible to measure at the actual listening position of the user, and it is possible to raise the
accuracy of signal generation for attenuating the main screen audio signal from the speaker
leaking into the headphones.
[0017]
In the present specification, the expression “television receiver capable of two-screen display”
means that at least two-screen display is possible, and may be three or more screens, including
the case of such multi-screen display. It is
In the case of three or more screens, for example, the first sub-display and the second subdisplay are performed in addition to the main display, but the leakage from the speaker
corresponds to the main display, and any of the sub-displays If decided, it relates to the sub
display and the main display, and can be handled in the same manner as the two-screen display.
[0018]
Hereinafter, a television receiving system according to an embodiment of the present invention
will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an example of the overall configuration of a system including the
television receiver and the remote control according to the present embodiment.
FIG. 2 is a functional block diagram showing an example of configuration in the television
receiver according to the present embodiment.
FIG. 3 is a functional block diagram showing a configuration example of the remote control
device according to the present embodiment.
FIG. 4 is a functional block diagram showing one configuration example of the headphone device
according to the present embodiment.
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FIG. 5 is a functional block diagram showing one configuration example of the main screen sound
attenuation signal generating unit according to the present embodiment.
FIG. 6 is a flowchart showing the flow of processing of the remote control device.
FIG. 7 is a flowchart showing the flow of processing of the television receiver.
FIG. 8 is a flowchart showing the flow of processing of the main screen sound attenuation signal
generation unit.
[0019]
As shown in FIG. 1, the system according to the present embodiment includes the television
receiver 1, a remote control device 20 for remotely controlling the television receiver 1, and
headphones 31 capable of listening to sub audio. ing. The television main unit 1 combines
television broadcasting and input sources from an external device connection, etc., and the main
display 3 and sub display 4 divided into two screens on the display unit 2 are possible. Only the
sound on the screen 3 side is output from the speakers 5 and 6 of the audio output unit. The
television body 1 is provided with a remote control signal receiving unit 7 for receiving a remote
control signal and an audio signal transmitting unit 8 for transmitting an audio signal. The
remote control main body 20 includes an operation unit 21, a remote control signal transmission
unit 22, an audio signal reception unit 23, a headphone terminal 24, a sound collection
microphone 25 (sound detection unit), and an operation for main screen sound attenuation
control. And a unit 26. The headphone 31 according to the present embodiment includes a sound
collecting microphone 32 and a remote control signal transmitting unit 33 as an additional
function in addition to the headband 31a and the ear pad 31b.
[0020]
That is, the system according to the present embodiment has an audio separation function of the
first audio output via the speaker based on the main display and the second audio output via the
headphone based on the sub display. ing.
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[0021]
Hereinafter, the voice separation function related to listening to the sub-screen voice in the case
of displaying on two screens will be described in detail with reference to a functional block
diagram and a flowchart.
[0022]
First, the flow of processing in the remote control device will be described.
Remote control device 20 and television main body generated in the television operation mode
(related to whether 1 screen or 2 screens etc.) setting information (step S1) set by the operation
unit 21 of the remote control device 20, distance information generation unit 204 in the remote
control device 20 The volume information of the main screen sound (9, 10) is detected by the
sound volume detection unit 203 in the remote control device 20 with the distance information
on the distance to 1 (step S2) and the sound from the sound collection microphone 25 mounted
on the remote control device 20 The remote control signal control unit 205 generates the remote
control signal control unit 205 as the remote control signal (step S4), and the remote control
transmission unit 22 transmits the volume information (step S3) to the television main body 1
(step S5).
Further, the sub-screen audio signal is received by the audio signal receiving unit 23 (step S6),
processed by the audio signal processing unit 206, and output from the headphone terminal 24
(step S7), and the processing is ended (step S8). The headphones 31 listen to this sub-screen
sound.
[0023]
On the other hand, processing in the television main body 1 will be described. The video signal
input from the video / audio input unit 100 (step S11) controls the video signal processing unit
101 by the control unit 109 according to the setting of the television operation mode received by
the remote control reception unit 8 and The image is output to the display unit 2 and displayed
(in this case, a two-screen display). ステップS12)。
[0024]
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On the other hand, the audio signal on the main screen side is processed by the main screen
audio signal processing unit 104 and output from the audio output unit, usually from the
speakers 5 and 6, and to the main screen audio attenuation signal generating unit 110. It is
output (step S14). The audio signal on the sub screen side is processed by the sub screen audio
signal processing unit 103 and sent to the audio mixer unit (mix: 111) (step S16). Information
received by the remote control reception unit 7 of the television main body is the television
operation mode setting information set by the operation unit 21 of the remote control, the
distance between the remote control device 20 generated by the distance information generation
unit 204 in the remote control and the television main body 1 The distance information for
measuring and the sound from the sound collection microphone 25 equipped with a remote
control are volume information in which the volume detection unit 203 in the remote control
detects the volume of the main screen sound 9 · 10. The distance information of the received
remote control control signal detects the distance between the television main body 1 and the
remote control device 20 in the distance information processing unit 107, the volume
information is extracted in the volume information processing unit 108, and the main screen
sound attenuation signal generating unit It is input to 110. The main screen sound attenuation
signal generation unit 110 generates a signal for attenuating the main screen sound when
listening to the sub screen sound with the headphones 31 (step S15), and mixes it with the sub
screen sound in the sound mixer 111 ( Step S17): The voice signal is transmitted from the voice
signal transmitting unit 8 (step S18).
[0025]
Next, in the main screen sound attenuation signal generation unit 110, the phase control unit
305 generates a signal obtained by inverting the phase of the main screen sound signal 300 by
180 degrees (step S21). The delay amount of the main screen audio signal is derived based on
the audio system delay information 302 including the system delay information and the audio
transmission system delay information, and the distance information 301 between the television
main body 1 and the remote control device 20 described above (step S22) An audio signal of a
phase at which the main screen audio is canceled at the position of the remote control device 20,
ie, the listening position, is generated (step S23). Further, the gain control unit 306 performs gain
control based on the volume information 304 of the main screen sound detected by the remote
control device 20 described above, and generates a main screen sound attenuation signal 307
(step S24). As described above, by transmitting distance information between the television main
body 1 and the remote control device 20 and volume information of the main screen sound to
the audio processing system of the television main body 1, the main from the speakers leaking
into the headphones 31 A signal can be generated to attenuate the screen audio signal.
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Therefore, it is possible to automatically attenuate the leakage of the main screen audio into the
sub screen audio that the user listens to with the headphones 31.
[0026]
Alternatively, using the main screen sound attenuation control operation unit 26 mounted on the
remote control device 20, the user may manually adjust the main screen sound to be leaked
while listening to the sub screen sound through the headphone 31. It is possible. The main
screen sound attenuation control operation unit 26 equipped with a remote control handles
information enabling adjustment of the phase control unit 305 and gain control unit 306 in the
main screen sound attenuation signal generation unit 110, and performs remote control control
in the remote control device main unit. The unit 205 generates a remote control signal and
transmits it to the television main body 1. In the television main unit 1, the received remote
control control signal is extracted as adjustment information 303 by the remote control
reception unit 7, and the phase control unit 306 and the gain control unit 307 in the main screen
sound attenuation signal generation unit 110 are adjusted. The main screen sound that leaks
while listening to the sub screen sound through can be attenuated.
[0027]
Furthermore, in order to prevent an error from occurring with the actual listening position of the
user, it is possible to adopt a configuration in which the headphone 31 has a function mounted
on the remote control device 20. When the headphone 31 has the function installed in the
remote control device 20, the remote control control signal 214 of only remote control operation
part information is sent out from the headphone terminal 24 to the headphone 13 side without
using the function installed in the remote control device 20 side. Do. The additional function of
the headphone according to the present embodiment will be described according to the block
configuration example of the headphone of FIG. 4. The headphone 31 includes a remote control
control signal 214 from the remote control device 20 via the headphone terminal 24, distance
information for measuring the distance between the headphone 31 generated by the distance
information generation unit 213 in the headphone 31 and the television main body 1, The
remote control signal generation unit 215 generates, as a remote control signal, volume
information when the volume detection unit 212 in the headphone 31 detects the volume of the
main screen sound (9 · 10) from the sound collection microphone 32 and transmits the remote
control It is transmitted from the section 33 to the television receiver 1.
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[0028]
By providing the headphone 31 with the above-described function installed in the remote control
device 20, it becomes possible to measure the distance information with the television main body
1 and the volume information of the main screen sound as the actual listening position of the
user. It is possible to increase the accuracy of signal generation for attenuating the main screen
audio signal from the coming speakers 5 and 6.
[0029]
As described above, the system according to the present embodiment is a television receiver
capable of two-screen display, and remotely operates the television receiver with the audio of one
screen side not output from the speaker during two-screen display. It is possible to transmit to a
remote control device, and in this remote control device, in a two-screen display television
receiver with a remote control capable of receiving an audio signal and outputting it to a
headphone terminal, a screen where audio is not output from a speaker In order to reduce audio
leakage from the speakers when listening to audio using headphones, the remote control,
information for measuring the distance to the television receiver, and information from the
speakers of the television receiver A function is provided to generate and transmit a signal
combining information obtained by measuring the volume.
The television receiver has a function of receiving, from the remote control signal transmitted
from the remote control device, a signal combining information for measuring distance and
information obtained by measuring the volume from the speaker, and a speaker based on the
received information. And a function to generate a signal for attenuating the audio signal from
the speaker, to be mixed with an audio signal different from the audio output from the speaker,
and to transmit it to the remote control.
[0030]
This has the advantage that the user can listen to the sound with the headphones without being
bothered by the sound heard from the speaker during the two-screen display. In addition, the
remote control device may be provided with an adjustment operation unit for generating an
audio attenuation signal, and may be provided with a function capable of adjusting the
attenuation amount by manual operation. In this case, if the positions of the headphones and the
remote control device do not match, and the volume detection result due to noise other than the
sound from the speaker is not correct, the function to reduce the sound from the speaker does
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not operate correctly Is also possible. Therefore, the user can listen to the sound with the
headphones without being bothered by the sound heard from the speaker by adjusting the
attenuation amount by manual operation during the two-screen display.
[0031]
Furthermore, the headphone has a function of generating and transmitting a signal combining
information for measuring the distance to the television receiver and information obtained by
measuring the volume from the speaker of the television receiver. There is an advantage that
measurement becomes possible at an actual listening position, and it becomes possible to
increase the accuracy of signal generation for attenuating the main screen audio signal from the
speaker leaking into the headphones.
[0032]
The present invention is applicable to a television receiver system capable of multi-screen
display.
[0033]
BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the example of a structure of
the whole system containing the apparatus of the television receiver by one embodiment of this
invention, and a remote control.
It is a functional block diagram showing an example of 1 composition in a television receiver by
this embodiment.
It is a functional block diagram showing an example of 1 composition of a remote control device
by this embodiment. It is a functional block diagram showing an example of 1 composition of a
headphone device by this embodiment. It is a functional block diagram showing an example of 1
composition of a main screen sound attenuation signal generation part by this embodiment. It is
a flowchart figure which shows the flow of a process of a remote control device. It is a flowchart
figure which shows the flow of a process of a television receiver. It is a flowchart figure which
shows the flow of a process of a main screen sound attenuation signal production | generation
part.
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Explanation of sign
[0034]
1:TV main unit 2: Display section 3: Main screen with split screen for 2 screens 4: Subscreen
for split display with 2 screens 5, 6: Speaker 7: Remote control receiver 8: Audio signal
transmitter 9, 10: Main screen audio 11, 34 : Remote control signal 12: audio signal carrier 20:
remote control main body 21: remote control operation unit 22, 33: remote control transmission
unit 23: audio receiving unit 24: headphone terminal 25, 32: sound collection microphone 26:
operation for main screen sound attenuation control Unit 31: Headphones 100: Video and audio
signal input unit 101: Video signal processing unit 103: Sub-screen audio signal processing unit
104: Main screen audio signal processing unit 107: Distance information processing unit 108:
Volume information processing unit 109: Television reception Machine control unit 110: Main
screen sound attenuation signal generation unit 111: Sub-screen sound mixer 203: Volume
detection unit 204: Distance information generation unit 205: Remote control signal control unit
206: Audio signal processing unit 212: Volume detection unit 213: Distance information
Generate Unit 214: remote control control signal 215: remote control signal generation unit 300:
main screen audio signal processing unit output main screen audio signal 301: distance
information processing unit output television / remote control distance information 302: audio
system delay information 303: from remote control Main screen voice attenuation signal
adjustment information 304: volume information processing unit output volume information
305: main screen voice attenuation signal phase control unit 306: main screen voice attenuation
signal gain control unit 307: main screen voice attenuation signal
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