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JP2013150079

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DESCRIPTION JP2013150079
Abstract: The present invention provides a reproduction apparatus capable of preventing the
deterioration of the quality of output sound, suppressing an increase in cost, and outputting
sound effects. SOLUTION: The television 10 of the present invention is connected to an AV
amplifier 20 via an HDMI cable 40 and an S / PDIF cable 45, and an ARC output for outputting
audio data of an MPEG2 stream via the HDMI cable 40 A circuit 111 and a digital audio
transmitter 114 for outputting sound effect data via the S / PDIF cable 45 are provided. [Selected
figure] Figure 1
Reproduction apparatus, audio output apparatus, control method, audio output method,
television receiver, audio reproduction system, program, and recording apparatus
[0001]
The present invention relates to a playback device that outputs audio and an audio output device.
[0002]
Conventionally, AAC (Advanced Audio Coding) and AC-3 (Audio Coding number) according to the
standard of S / PDIF (Sony Philips Digital Interface) between a television receiver (hereinafter
also referred to as a television) and an AV amplifier. It is a common practice to transmit and
receive compressed audio stream data compressed by a method such as 3).
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As a transmission means for transmitting a signal conforming to the S / PDIF standard, for
example, mention is made of an ARC (Audio Return Channel) conforming to the HDMI standard,
an optical digital cable (optical), a coaxial cable (coaxial), etc. Can.
[0003]
Further, when the television and the AV amplifier are connected by the HDMI cable, it is possible
to switch whether to output the audio from the speaker of the television or to output the audio
from the speaker of the AV amplifier using the CEC command.
[0004]
Furthermore, in recent years, data broadcast programs in which information content is
superimposed on broadcast programs are in widespread use, and when the data broadcast
program is received, the information content is displayed on the television together with the
video content.
When a data broadcast program is displayed, for example, the user can select an option by
operating the remote control to place the cursor on any of the options included in the
information content displayed on the television.
[0005]
In such a case, the user can recognize that the television has been accepted by the television by
sounding an effect sound when the cursor displayed on the television moves in response to the
user's remote control operation. . Further, by emitting a sound effect, it is possible to reduce the
stress felt by the user due to the delay of the reaction time until the remote control operation is
reflected on the screen of the television.
[0006]
Note that for playback of sound effects, the operation signal of the remote control (for example,
pressing of the cursor button and pressing of the color button, etc.) has an index for correctly
playing back the sound effects determined by the ARIB (Radio Industry Association) standard.
This is realized by reading out the sound effects that are included and recorded in advance in
association with the index in a television that receives an operation signal of the remote control.
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[0007]
In Japanese Patent Application Laid-Open No. 2008-101501, a video and audio recording
capable of outputting a desired sound effect by extracting sound from a recorded program and
generating sound effect data and setting the sound effect data for each operation of the user A
playback device is disclosed.
[0008]
Further, Patent Document 2 discloses a reproduction apparatus that mixes (superimposes) and
outputs digital audio converted by a linear PCM (Linear Pulse Code Modulation) method and
sound data (sound effect).
[0009]
Japanese Patent Application Publication No. 2007-266807 (released on October 11, 2007) WO
2006/080460 pamphlet (released on August 3, 2006)
[0010]
An outline of an audio output system for outputting audio and sound effects in the prior art will
be described with reference to FIG.
FIG. 7 is a diagram schematically showing an audio output system for outputting audio and
sound effects in the prior art.
[0011]
FIG. 7A shows a case where audio data is supplied from the television 80 to the AV amplifier 90
by compressed audio stream data, and FIG. 7B shows audio data converted by the PCM method
(PCM conversion in the following) (C) also refers to the case where it is performed by audio data
that is again encoded into compressed audio stream data after being decoded from the
compressed audio stream data to PCM converted data in the television 80 There is.
[0012]
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As shown in FIG. 7A, when the television 80 corresponding to transmission and reception of
compressed audio stream data and the AV amplifier 90 are connected by the HDMI cable and the
optical digital cable and the audio is output from the speaker 902 of the AV amplifier 90, Sound
effects can not be output from the speaker 902.
This is because the sound effects can not be superimposed on the compressed audio stream data
of the broadcast program received by the antenna 801 of the television 80.
[0013]
As described above, since the sound effects can not be superimposed on the compressed audio
stream data, in the technique described in Patent Document 1 as shown in FIG. 7A, the
compressed audio stream data in the decoder 901 of the AV amplifier 90 is When decoding
audio to output sound, there is a problem that sound effects can not be output.
[0014]
On the other hand, in the cited reference 2, as shown in FIG. 7 (b), the compressed sound stream
data is decoded by the decoder 802 of the television 80 and then converted into PCM converted
data, thereby superimposing the sound effect on the sound data. Therefore, sound effects can be
output from the AV amplifier.
[0015]
However, audio data converted by the PCM method can not maintain high sound quality as
compared with audio data supplied from a television to an AV amplifier as compressed audio
stream data.
This is because, when converting surround audio data corresponding to 5.1 ch supplied by
compressed audio stream data by the PCM method, ARC, optical digital cable, and coaxial cable
are limited to 5.1 ch due to the limitation on the band. This is because it is impossible to transmit
PCM conversion data corresponding to Y. It is necessary to downmix to correspond to 2ch.
[0016]
That is, in the technique described in reference document 2 as shown in FIG. 7B, there is a
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problem that the quality of the sound output from the AV amplifier is degraded, and it is not
possible to enjoy a powerful sound. The
[0017]
Further, as shown in FIG. 7C, when the television 80 is further provided with an encoder 803,
and audio data on which sound effects are superimposed is encoded into compressed audio
stream data, the quality of audio output from the speaker 902 is maintained. You can also output
sound effects.
[0018]
However, when the encoder 803 is provided, it is necessary to further provide a memory
necessary for processing in the encoder 803 and processing clock up, which causes a significant
increase in cost.
Also, depending on the type of encoding, royalty etc. may be required, which further increases
the cost.
[0019]
As described above, the configuration shown in FIG. 7C has a problem that the cost is increased.
[0020]
The present invention has been made to solve the above-mentioned problems, and its main object
is to prevent deterioration of the quality of the sound to be output, to suppress the increase in
cost, and to be able to output sound effects. It is in providing an apparatus.
[0021]
In order to solve the above problems, the reproducing apparatus according to the present
invention transmits a first transmission cable including a command transmission line
transmitting a command and a data transmission line transmitting audio data, and transmits a
digital signal. A first output unit connected to the audio output device via a second transmission
cable and outputting compressed audio stream data via the first transmission cable; and the
second output cable via the second transmission cable And second output means for outputting
audio data other than compressed audio stream data.
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[0022]
According to the above configuration, the reproduction device outputs the compressed audio
stream data and the other audio data to the audio output device via different transmission cables.
Thus, the audio output device can output the audio represented by the compressed audio stream
data and the audio represented by the other audio data without causing deterioration of the
audio represented by the compressed audio stream data.
[0023]
In addition, since the reproduction apparatus need not superimpose and transmit the compressed
audio stream data and the other audio data, an encoder (for example, an encoder which reencodes decoded information) for superimposing and transmitting the audio data. Etc.) is not
necessary.
In other words, the playback device just connects the playback device and the audio output
device via two different cables, without causing an increase in cost, the compressed audio stream
data and the other audio data are Both can be output to the voice output device.
[0024]
Therefore, the reproduction apparatus can prevent the deterioration of the quality of the audio,
can suppress the increase of the cost, and can output the compressed audio stream data and the
other audio data.
[0025]
The reproduction apparatus according to the present embodiment further includes detection
means for detecting whether or not the second transmission cable is connected to the connection
terminal of the audio output device, and the second output means is It is preferable that the other
audio data be output when it is detected by the detection means that the second transmission
cable is connected to the connection terminal of the audio output device.
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[0026]
According to the above configuration, the second output unit detects that the second
transmission cable is not connected to the connection terminal of the audio reproduction device
by the detection unit. Do not output voice data of
Thus, the playback device can prevent the other audio data from being output when the second
transmission cable is not connected to the connection terminal of the audio playback device.
[0027]
Further, in the reproducing apparatus according to the present invention, the detection means is
provided with a confirmation instruction for confirming to which of the connection terminals of
the audio output device the second transmission cable is connected, the command transmission
line And to which of the connection terminals of the audio output device the second transmission
cable is connected, based on the connection information from the audio output device. Is
preferred.
[0028]
According to the above configuration, the detection means transmits the confirmation instruction
to the voice output device via the command transmission line included in the first transmission
cable, and the connection information from the voice output device get.
Thus, even if the detection means can not directly detect to which of the connection terminals of
the audio output device the second transmission cable is connected, the first transmission cable
can be used. It is possible to indirectly detect which of the connection terminals of the audio
output device is connected to.
[0029]
The reproducing apparatus according to the present invention further comprises an audio output
means for outputting an audio, wherein the audio output means is any of the connection
terminals of the audio output device in which the second transmission cable is connected by the
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detection means. It is preferable to output the voice represented by the other voice data when it
is detected that the connection is not made.
[0030]
According to the above configuration, when the second transmission cable is not connected to
the audio output device, the reproduction device can output the audio represented by the other
audio data from the audio output means. .
Thereby, the reproduction device can prevent the sound represented by the other sound data
from being not output when the second transmission cable is not connected to the sound output
device.
[0031]
Further, in the reproduction apparatus according to the present invention, it is preferable that
the sound represented by the other sound data is a sound effect stored in the reproduction
apparatus.
[0032]
In order to solve the above problems, the audio output device according to the present invention
transmits a first transmission cable including a command transmission line for transmitting a
command and a data transmission line for transmitting audio data, and transmits a digital signal.
A first acquisition unit connected to the reproduction apparatus via the second transmission
cable, and acquiring the compressed audio stream data input via the first transmission cable; A
second acquisition unit for acquiring other audio data other than the compressed audio stream
data input via the second input unit; audio represented by the other audio data acquired by the
second acquisition unit; And audio output means for superimposing and outputting the audio
represented by the compressed audio stream data acquired by the acquisition means.
[0033]
According to the above configuration, the compressed audio stream data and other audio data
are input to the audio output device via different transmission cables.
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Thus, the audio output apparatus can output the audio represented by the other audio data by
superimposing on the audio represented by the compressed audio stream data without causing
deterioration of the audio represented by the compressed audio stream data. it can.
[0034]
Further, since the playback apparatus does not need to superimpose and transmit compressed
audio stream data and audio data, it is not necessary to further include components necessary for
superimposing compressed audio stream data and audio data.
That is, the audio output device simply connects the audio output device and the reproduction
device via two different cables, and the compressed audio stream data and the audio data from
the reproduction device can be obtained without increasing the cost. Other voice data can be
acquired.
[0035]
Therefore, the audio output device can prevent deterioration of the audio quality in the
reproduction device, can suppress an increase in cost, and can output audio represented by the
compressed audio stream data and the other audio data.
[0036]
Further, the audio output device according to the present invention further comprises
confirmation means for confirming to which of the connection terminals of the own device the
second transmission cable is connected, and the audio output means is the confirmation The
compressed audio stream data acquired by the first acquiring unit, the audio represented by the
other audio data acquired through the connection terminal whose connection to the second
transmission cable is confirmed to be connected by the unit It is preferable to superimpose on
the voice represented by and output.
[0037]
According to the above configuration, the audio output device is configured to transmit the audio
represented by the data acquired through the connection terminal other than the connection
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terminal whose connection to the second transmission cable has been confirmed by the
confirmation unit. , Do not output superimposed on the audio represented by the compressed
audio stream data.
Therefore, even when a cable other than the first and second transmission cables is connected to
the audio output device, the audio output means inputs via the cables other than the first and
second transmission cables. It is possible to prevent the voice represented by the data being
outputted from being output.
[0038]
Further, in the voice output device according to the present invention, the confirmation means
confirms an instruction for confirming to which of the connection terminals of the second
apparatus the second transmission cable is connected via the command transmission line.
According to the above configuration, connection information is received from the playback
device, and connection information indicating which of the connection terminals of the device
itself the second transmission cable is connected to is sent to the playback device. The
confirmation means receives the confirmation instruction from the reproduction device via the
command transmission line included in the first transmission cable, and transmits the connection
information to the reproduction device.
Thereby, the confirmation means may be a cable which can not directly detect to which of the
connection terminals of the audio output device the second transmission cable is connected in
the reproduction device. The reproduction device can be notified of which of the connection
terminals of the audio output device is connected to via the one transmission cable.
[0039]
In the audio output device according to the present invention, it is preferable that the audio
represented by the other audio data is a sound effect stored in the playback device.
[0040]
The control method according to the present invention is, in order to solve the above problems, a
control method of a playback apparatus, the playback apparatus comprising a command
transmission line for transmitting a command and a data transmission line for transmitting audio
data. And a second transmission cable for transmitting a digital signal, the first transmission
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cable being connected to the audio output device, and the first transmission cable outputting
compressed audio stream data via the first transmission cable. It is characterized by including an
output step and a second output step of outputting other audio data other than the compressed
audio stream data via the second transmission cable.
[0041]
According to the above configuration, the reproduction device outputs the compressed audio
stream data and the other audio data to the audio output device via different transmission cables.
Thus, the audio output device can output the audio represented by the compressed audio stream
data and the audio represented by the other audio data without causing deterioration of the
audio represented by the compressed audio stream data.
[0042]
In addition, since the reproduction apparatus need not superimpose and transmit the compressed
audio stream data and the other audio data, there is no need to further include a component for
superimposing and transmitting.
In other words, the playback device just connects the playback device and the audio output
device via two different cables, without causing an increase in cost, the compressed audio stream
data and the other audio data are Both can be output to the voice output device.
[0043]
Therefore, the reproduction apparatus can prevent the deterioration of the quality of the audio,
can suppress the increase of the cost, and can output the compressed audio stream data and the
other audio data.
[0044]
An audio output method according to the present invention is an audio output method in an
audio output device to solve the above problems, and the audio output device includes a
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command transmission line for transmitting a command, and data for transmitting audio data.
Compressed audio stream data input via the first transmission cable, which is connected to the
reproduction apparatus via the first transmission cable including the transmission line and the
second transmission cable for transmitting the digital signal. A second acquisition step of
acquiring other audio data other than the compressed audio stream data input through the
second transmission cable, and a second acquisition step of acquiring A sound represented by
the acquired other audio data is a sound represented by the compressed audio stream data
acquired in the first acquisition step. It includes a sound output step of outputting superimposed
on, and characterized in that.
[0045]
According to the above configuration, the compressed audio stream data and other audio data
are input to the audio output device via different transmission cables.
Thus, the audio output apparatus can output the audio represented by the other audio data by
superimposing on the audio represented by the compressed audio stream data without causing
deterioration of the audio represented by the compressed audio stream data. it can.
[0046]
Further, since the playback apparatus does not need to superimpose and transmit compressed
audio stream data and audio data, it is not necessary to further include components necessary for
superimposing compressed audio stream data and audio data.
That is, the audio output device simply connects the audio output device and the reproduction
device via two different cables, and the compressed audio stream data and the audio data from
the reproduction device can be obtained without increasing the cost. Other voice data can be
acquired.
[0047]
A television receiver including the above-described playback device and an audio playback
system including the above-described playback device and the above-described audio output
device also fall within the scope of the present invention.
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[0048]
A program for operating a computer as the reproducing apparatus according to the present
invention, the program causing the computer to function as each unit of the reproducing
apparatus, and a computer operating as the audio output apparatus according to the present
invention Program for causing a computer to function as each means of the voice output device,
and a computer readable recording medium recording those programs are also included in the
scope of the present invention. .
[0049]
As described above, the reproducing apparatus according to the present invention includes the
first transmission cable including the command transmission line transmitting the command and
the data transmission line transmitting the audio data, and the second transmission transmitting
the digital signal. A first output unit connected to the audio output device via a cable and
outputting the compressed audio stream data via the first transmission cable; and the
compressed audio stream data via the second transmission cable And second output means for
outputting other audio data than the above.
[0050]
Therefore, the reproduction apparatus can prevent the deterioration of the quality of the audio,
can suppress the increase of the cost, and can output the compressed audio stream data and the
other audio data.
[0051]
It is a block diagram showing an outline of composition of an audio reproduction system
concerning one embodiment of the present invention.
It is a flowchart which shows the flow of the connection confirmation process in the television
which concerns on one Embodiment of this invention.
It is a sequence diagram which shows the flow of the connection confirmation process which
confirms the connection of the television and AV amplifier which concerns on one Embodiment
of this invention.
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It is a flowchart which shows the flow of the sound-sound reproduction ¦ regeneration processing
in the television which concerns on one Embodiment of this invention.
It is a flowchart which shows the flow of the sound-sound reproduction ¦ regeneration processing
in AV amplifier which concerns on one Embodiment of this invention.
It is a block diagram showing an outline of composition of an audio reproduction system
concerning other embodiments of the present invention.
It is a figure which shows the outline of the audio ¦ voice output system which outputs an audio ¦
voice and a sound effect in a prior art.
[0052]
First Embodiment An audio reproduction system including a reproduction device and an audio
output device according to an embodiment of the present invention will be described below with
reference to FIGS. 1 to 6.
However, the configuration described in this embodiment is not intended to limit the scope of the
present invention to that alone, unless otherwise specifically described, and is merely an
illustrative example.
[0053]
[Audio Reproduction System] The configurations of the reproduction device and the audio output
device according to the present embodiment will be described below with reference to FIG.
In the present embodiment, the reproduction apparatus is realized by a television receiver, and
the audio output apparatus is realized by an AV amplifier. Therefore, the reproduction apparatus
is hereinafter referred to as a television and an AV amplifier, respectively.
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FIG. 1 is a block diagram showing an outline of a configuration of an audio reproduction system
1 according to the present embodiment.
[0054]
As shown in FIG. 1, the television 10 and the AV amplifier 20 constituting the audio reproduction
system 1 are an HDMI cable (first transmission cable) 40, and an S / PDIF cable (second
Transmission cable) 45 are connected by two cables.
[0055]
(Configuration of Television) First, the television 10 according to the present embodiment will be
described with reference to FIG.
As shown in FIG. 1, the television 10 includes a tuner 101, a decoder 102, a video processing
unit 103, a monitor 104, an audio processing unit 105, an amplifier 106, a speaker (audio output
means) 107, a memory 108, a remote control reception unit 109, Unit (detection means) 110,
ARC output circuit (first output means) 111, HDMI receiver 112, HDMI terminal 113, digital
audio transmitter (second output means) 114, and S / PDIF terminal 115 .
[0056]
The tuner 101 is a tuner for receiving a broadcast program.
Examples of the tuner 101 include a terrestrial digital broadcast tuner that receives a broadcast
program broadcast by terrestrial digital broadcast, and a satellite broadcast tuner that receives a
broadcast program broadcast by satellite broadcast.
[0057]
The decoder 102 is a means for demodulating the broadcast program received by the tuner 101
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and dividing it into a video part and an audio part.
The decoder 102, for example, an RF unit that converts a received signal of a received broadcast
program into an analog baseband signal, an ADC unit that converts an analog baseband signal
into a digital baseband signal, and demodulates an MPEG2 stream from the digital baseband
signal. A demodulator and an MPEG2 stream are also referred to as a video part (also referred to
as MPEG2 stream video data) (for example, MPEG2-Video etc.) and an audio part (also referred to
as MPEG2 stream audio data (compressed audio stream data)) (for example (MPEG2-ACC etc.)
and so on. The video data and audio data of the MPEG2 stream decoded by the decoder 102 are
supplied to the video processing unit 103 and the audio processing unit 105, respectively.
[0058]
The video processing unit 103 drives the monitor 104 to display a video represented by the
video data, based on the supplied video data of the MPEG2 stream. The video processing unit
103 drives, for example, a decoding unit that decodes video data of the supplied MPEG2 stream
into a video signal, a processing unit that performs processing for adjusting the image quality
and scaling for the video signal, and the monitor 104 Can be constituted by a driving unit or the
like.
[0059]
The audio processing unit 105 supplies an audio signal to the amplifier 106 so that the audio
represented by the audio data is output from the speaker 107 based on the supplied audio data
of the MPEG2 stream. The audio processing unit 105, for example, decodes the supplied audio
data of the MPEG2 stream into an audio signal (corresponding to the audio decoder 802 in FIG.
7), adjusts the sound quality to an audio signal, and adjusts the volume. It can comprise by the
process part etc. which perform a process etc.
[0060]
When the audio processing unit 105 outputs audio from the AV amplifier 20, the audio
processing unit 105 supplies the audio data of the supplied MPEG2 stream as it is to the ARC
output circuit 111 as it is.
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[0061]
Further, the sound processing unit 105 reads sound data (hereinafter also referred to as sound
effect data) indicating an effect sound from the memory 108 in accordance with an instruction
from the control unit 110.
Further, when the broadcast processing received by the tuner 101 includes information
instructing to output an alarm sound, the sound processing unit 105 receives sound effect data
from the memory 108 (specifically, the sound effect data will be described later). The alarm
sound data, which is voice data indicating an alarm sound to be output, is read out.
[0062]
The sound processing unit 105 supplies the read sound effect data to the amplifier 106 when
outputting the sound effect from the speaker 107, and outputs the sound effect from the AV
amplifier 20 when the sound effect data is output. An audio transmitter 114 is supplied.
[0063]
The amplifier 106 drives the speaker 107 based on the audio signal supplied from the audio
processing unit 105 so as to output the audio represented by the audio signal.
[0064]
The memory 108 stores sound effect data (other sound data).
The sound effects include, for example, an operation sound output when a remote control
operation (pressing of a cursor button or pressing of a color button, etc.) is received, a ringing
tone of a videophone system, and an alarm sound of an emergency earthquake alert. be able to.
[0065]
The remote control reception unit 109 receives a remote control signal transmitted by the user
operating a remote controller (hereinafter also referred to as a remote control).
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The remote control reception unit 109 supplies the received remote control signal to the control
unit 110.
[0066]
Control part 110 controls each part with which television 10 is provided. Further, the control
unit 110 controls each unit provided in the television 10 according to the remote control signal
received by the remote control reception unit 109. As control according to the remote control
signal, for example, control to switch the reception channel of the tuner 101 according to the
remote control signal may be mentioned.
[0067]
In addition, when receiving the remote control signal, the control unit 110 notifies the voice
processing unit 105 to read an operation sound corresponding to the content of the remote
control operation indicated by the remote control signal from the memory 108.
[0068]
Furthermore, the control unit 110 transmits and receives a vendor command of CEC to and from
the AV amplifier 20 via the CEC line (command transmission line) of the HDMI cable 40
connected to the HDMI terminal 113, thereby Check the connection of
The CEC line is a transmission line that transmits a CEC command. The connection confirmation
in the control unit 110 includes a confirmation as to whether or not an audio device is
connected, and a confirmation as to whether or not the S / PDIF cable 45 is connected.
[0069]
The ARC output circuit 111 transmits the audio data of the MPEG2 stream supplied from the
audio processing unit 105 using an ARC (data transmission line) of the HDMI cable 40 connected
to the HDMI terminal 113.
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[0070]
The HDMI receiver 112 receives video data, audio data, and clock data supplied from the AV
amplifier 20 via a Transition Minimized Differential Signaling (TMDS) line of the HDMI cable 40
connected to the HDMI terminal 113.
[0071]
The digital audio transmitter 114 transmits the sound effect data supplied from the audio
processing unit 105 via the S / PDIF cable 45 connected to the S / PDIF terminal 115.
[0072]
(Configuration of AV Amplifier) Next, the AV amplifier 20 according to the present embodiment
will be described with reference to FIG.
As shown in FIG. 1, the AV amplifier 20 includes an HDMI transmitter (first acquisition unit) 201,
an HDMI terminal 202, a control unit (confirmation unit) 203, a digital audio receiver (second
acquisition unit) 204, and an S / PDIF. A terminal (connection terminal) 205, an audio processing
unit 206, an amplifier 207, and a speaker (audio output means) 208 are provided.
[0073]
The HDMI transmitter 201 transmits video data, audio data, and clock data via the TMDS line of
the HDMI cable 40 connected to the HDMI terminal 202.
Also, the HDMI transmitter 201 receives audio data of the MPEG2 stream supplied from the
television 10 using the ARC of the HDMI cable 40 connected to the HDMI terminal 113.
The HDMI transmitter 201 supplies the received audio data of the MPEG2 stream to the audio
processing unit 206.
[0074]
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The control unit 203 controls each unit included in the AV amplifier 20. The control unit 203
also performs connection confirmation by transmitting and receiving a vendor command to and
from the television 10 via the CEC line connected to the HDMI terminal 202.
[0075]
The digital audio receiver 204 receives sound effect data supplied from the television 10 via the
S / PDIF cable 45 connected to the S / PDIF terminal 205. The digital audio receiver 204 supplies
the received sound effect data to the audio processing unit 206.
[0076]
The AV amplifier 20 includes one or more S / PDIF terminals 205, and in the present
embodiment, three S / PDIF terminals 205 (S / PDIF terminals (connection terminals) 205a to
205c). The case will be described as an example. Further, in the present embodiment, the S /
PDIF cable 45 is connected to the S / PDIF terminal 205 b.
[0077]
The audio processing unit 206 superimposes the sound effect data on the supplied audio data of
the MPEG2 stream. The audio processing unit 206 is, for example, a decoding unit
(corresponding to the audio decoder 901 in FIG. 7) that decodes audio data of the supplied
MPEG2 stream into an audio signal, a sound effect decoding unit that decodes sound effect data
into a sound effect signal, And it can comprise by the superimposition part etc. which
superimpose a sound effect signal on an audio ¦ voice signal.
[0078]
The audio processing unit 206 supplies the audio signal to the amplifier 207 so that the audio
represented by the audio signal and the sound effect represented by the sound effect signal are
output from the speaker 208.
[0079]
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The amplifier 207 drives the speaker 107 based on the audio signal and the sound effect signal
supplied from the audio processing unit 206 so as to output the sound and the sound effect
represented by the audio signal.
[0080]
[Connection Confirmation Process] Next, a connection confirmation process for confirming the
connection with the AV amplifier 20 in the television 10 will be described with reference to FIG.
FIG. 2 is a flowchart showing a flow of connection confirmation processing in the television 10
according to the present embodiment.
[0081]
When the power of the television 10 and the AV amplifier 20 transitions to the ON state, the
control unit 110 of the television 10 determines whether an audio device (in the present
embodiment, the AV amplifier 20) is connected via the HDMI cable 40 Is determined (step S101).
The determination of the AV amplifier 20 in the control unit 110 may be performed, for example,
by using a CEC command to confirm whether there is a device acquiring an audio logical address.
[0082]
When it is determined that the AV amplifier 20 is not connected via the HDMI cable 40 (NO in
step S101), the control unit 110 sets the audio device flag to "0" (step S102). The audio device
flag is a flag representing the state of the AV amplifier 20. When the audio device flag is "0", it
indicates that the AV amplifier 20 is not connected via the HDMI cable 40.
[0083]
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21
When it is determined that the AV amplifier 20 is connected via the HDMI cable 40 (YES in step
S101), the control unit 110 determines whether the AV amplifier 20 supports reproduction of a
sound via the CEC line. It is determined (step S103). The determination process (sound effect
correspondence determination process) as to whether or not the AV amplifier 20 corresponds to
the reproduction of the sound effect may be performed using, for example, a vendor command of
CEC. The details of the sound effect correspondence determination process will be described later
by changing the drawing.
[0084]
When it is determined that the playback of the sound effect is supported (YES in step S103), the
control unit 110 determines whether the AV amplifier 20 is connected via the S / PDIF cable 45
(step S104). . The determination process (S / PDIF connection determination process) as to
whether or not the AV amplifier 20 is connected via the S / PDIF cable 45 may be performed
using, for example, a vendor command of CEC. The details of the S / PDIF connection
determination process will be described later by changing the drawings.
[0085]
When it is determined that the AV amplifier 20 does not support reproduction of sound effects
(NO in step S103), or when it is determined that the AV amplifier 20 is not connected via the S /
PDIF cable 45 (NO in step S104), The unit 110 sets the audio device flag to "1" (step S105).
When the audio device flag is "1", it indicates that the AV amplifier 20 is not connected via the S
/ PDIF cable 45.
[0086]
If it is determined that the AV amplifier 20 is connected via the S / PDIF cable 45 (NO in step
S104), the control unit 110 sets the audio device flag to "2" (step S106). When the audio device
flag is "2", it indicates that the AV amplifier 20 is connected via both the HDMI cable 40 and the
S / PDIF cable 45.
[0087]
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22
When the audio device flag is set to 0 , 1 or 2 , control unit 110 stores the set audio
device flag in memory 108 (step S107), and ends the connection confirmation process.
[0088]
(Sound Effect Correspondence Determination Processing, S / PDIF Connection Determination
Processing) Next, the sound effect correspondence judgment processing in the control unit 110
of the television 10 and the S / PDIF connection judgment processing will be described with
reference to FIG.
FIG. 3 is a sequence diagram showing the sound effect correspondence determination process
and the S / PDIF connection determination process in the control unit 110 according to the
present embodiment.
[0089]
In this embodiment, a command for extending a CEC command defined in the HDMI standard,
and a sound effect correspondence determination process and an S / PDIF connection
determination process are performed by a vendor command that can include arbitrary
information. . The vendor commands described below may be transmitted and received via the
CEC line.
[0090]
First, the sound effect correspondence determination process (step S103 in FIG. 2) will be
described. As shown in FIG. 3, the control unit 110 outputs, to the AV amplifier 20, a command
(sound effect correspondence inquiry command) inquiring as to whether or not the AV amplifier
20 supports reproduction of a sound effect.
[0091]
When the sound effect correspondence inquiry command is received, the control unit 203 of the
AV amplifier 20 outputs, to the control unit 110, a reply command (sound effect correspondence
reply command) indicating whether or not the reproduction of the sound effect is supported.
09-05-2019
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[0092]
The control unit 110 determines whether the AV amplifier 20 uses the sound effect according to
whether the received sound effect correspondence reply command is a command indicating that
the sound effect is supported or not. It is determined whether it corresponds to the reproduction
of.
When the sound effect corresponding reply command is not transmitted from the AV amplifier
20, the control unit 110 determines that the AV amplifier 20 does not correspond to the
reproduction of the sound effect.
[0093]
Next, the S / PDIF connection determination process (step S104 in FIG. 2) will be described. The S
/ PDIF terminals 115 and 205 are terminals such as the HDMI terminals 113 and 202 which can
not be confirmed in connection.
[0094]
Further, in the present embodiment, the AV amplifier 20 is provided with three S / PDIF
terminals 205a to 205c. Here, the case where it is determined to which of the S / PDIF terminals
205a to 205c of the AV amplifier 20 the S / PDIF terminal 115 of the television 10 is connected
via the S / PDIF cable 45 will be described as an example.
[0095]
The determination of the connection between the television 10 and the AV amplifier 20 via the S
/ PDIF cable 45 may be made, for example, by determining whether digital data input to the S /
PDIF terminal 205 can be received. Good. Hereinafter, in the AV amplifier 20, a state in which
digital data input to the S / PDIF terminal 205 can be received is referred to as a locked state,
and a state in which digital data can not be received is also referred to as an unlocked state.
09-05-2019
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[0096]
As shown in FIG. 3, in a state where data is not output via the S / PDIF cable 45, the control unit
110 first confirms the lock state of the S / PDIF terminal 205 <SPDIF lock confirmation>
command, Output to the AV amplifier 20.
[0097]
When the control unit 203 included in the AV amplifier 20 acquires the <SPDIF lock
confirmation> command, the control unit 203 notifies the confirmation result of the lock state of
one of the S / PDIF terminals 205 (for example, the S / PDIF terminal 205a) <SPDIF Lock
confirmation result response> The command is output to the television 10.
When the S / PDIF terminal 205a is in the locked state, the control unit 203 outputs a <SPDIF
lock confirmation result response / lock> command indicating the locked state to the television
10.
[0098]
In the case where the S / PDIF terminal 205a is in the locked state (that is, data is received) even
though the television 10 does not output data via the S / PDIF cable 45, the control unit 110 It is
determined that another device is connected to the S / PDIF terminal 205a.
[0099]
When acquiring the <SPDIF lock confirmation result response / lock> command, the control unit
110 transmits a <SPDIF terminal switch request> command indicating a switch request of the
terminal for confirming the lock state.
[0100]
When acquiring the <SPDIF terminal switching request> command, the control unit 203 switches
the terminal for confirming the lock state (SPDIF confirmation terminal switching in FIG. 3).
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Further, the control unit 203 outputs a <SPDIF terminal switching response> command
indicating that the terminal for confirming the lock state has been switched.
[0101]
When the control unit 110 acquires the <SPDIF terminal switching response> command, the
control unit 110 outputs the <SPDIF lock confirmation> command to the AV amplifier 20 again.
[0102]
When acquiring the <SPDIF lock confirmation> command, the control unit 203 next notifies the
confirmation result of the lock state of any terminal (for example, the S / PDIF terminal 205b)
except the S / PDIF terminal 205a <SPDIF lock Confirmation result response> The command is
output to the television 10.
When the S / PDIF terminal 205 b is in the unlocked state, the control unit 203 outputs a <SPDIF
lock confirmation result response / unlock> command indicating the unlocked state to the
television 10.
[0103]
When the control unit 110 does not output data via the S / PDIF cable 45 and the S / PDIF
terminal 205 b is in the unlocked state (that is, no data is received), S / It is determined that the
television 10 may be connected to the PDIF terminal 205b.
[0104]
The control unit 110 transmits a <SPDIF connection terminal candidate> command indicating
that the terminal (S / PDIF terminal 205b) currently performing connection confirmation is
further connected to the television 10.
[0105]
Further, the control unit 110 transmits test data to the AV amplifier 20 via the S / PDIF cable 45
(SPDIF test data output in FIG. 3).
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26
The AV amplifier 20 receiving the test data is locked at the S / PDIF terminal 205 b receiving the
test data.
[0106]
The control unit 110 outputs a <SPDIF lock confirmation> command to the AV amplifier 20 in a
state where the test data is output via the S / PDIF cable 45.
[0107]
When the control unit 203 acquires the <SPDIF lock confirmation> command, the control unit
203 confirms that the S / PDIF terminal 205b is in the lock state, and indicates that the <SPDIF
lock confirmation result response / lock> command is in the lock state. Output to
[0108]
When the control unit 110 transitions from a state where test data is not transmitted via the S /
PDIF cable 45 to a state where it is transmitting, the S / PDIF terminal 205 b has transitioned
from the unlocked state to the locked state Thus, it is determined that the possibility that the
television 10 is connected to the S / PDIF terminal 205b is high.
[0109]
The control unit 110 further transitions from a state in which test data is transmitted via the S /
PDIF cable 45 to a state in which test data is not transmitted.
Along with this, the S / PDIF terminal 205b to which the S / PDIF cable 45 is connected
transitions from the locked state to the unlocked state.
[0110]
The control unit 110 outputs a <SPDIF lock confirmation> command to the AV amplifier 20 in a
state where data is not output via the S / PDIF cable 45.
[0111]
When the control unit 203 acquires the <SPDIF lock confirmation> command, the control unit
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203 confirms that the S / PDIF terminal 205b is in the unlocked state, and indicates <SPDIF lock
confirmation result response / unlock> command indicating that the S / PDIF terminal 205b is in
the locked state. It outputs to the television 10.
[0112]
When the control unit 110 transitions from a state where test data is not transmitted through the
S / PDIF cable 45 to a state where test data is not transmitted, and further transitions to a state
where it is not transmitting, the S / PDIF terminal 205 b is By transitioning from the unlocked
state to the locked state and further to the unlocked state, it is determined that the television 10
is connected to the S / PDIF terminal 205b.
[0113]
The control unit 110 outputs a <SPDIF connection terminal determination> command indicating
that the terminal (S / PDIF terminal 205b) currently performing connection confirmation is
determined as the terminal to which the television 10 is connected.
[0114]
If it is determined that the television 10 is connected to the S / PDIF terminal 205 b of the AV
amplifier 20, the control unit 110 sets the audio device flag to 2 as the state of the AV
amplifier 20 and stores it in the memory 108. .
[0115]
In addition, the control unit 203 stores SPDIF connection terminal information indicating that the
S / PDIF terminal 205 b is connected to the television 10 in a memory (not shown) included in
the AV amplifier 20.
Thus, when the sound amplifier data is input from the television 10 via the S / PDIF cable 45
connected to the S / PDIF terminal 205b, the AV amplifier 20 receives the MPEG2 input using
the ARC of the HDMI cable 40. It is possible to superimpose an effect sound on the audio
indicated by the audio data of the stream and output it.
[0116]
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28
According to the above-described configuration, the control unit 110 transmits a confirmation
instruction to the AV amplifier 20 via the CEC line included in the HDMI cable 40, and acquires
connection information from the AV amplifier 20.
Thus, the control unit 110 can not directly detect whether the S / PDIF cable 45 is connected to
any one of the S / PDIF terminals 205a to 205c included in the AV amplifier 20. It is possible to
indirectly detect which of the S / PDIF terminals 205a to 205c is connected to.
[0117]
In the present embodiment, the confirmation instruction is configured to include a plurality of
confirmation commands for performing connection confirmation, which are output from the
control unit 110 of the television 10 to the control unit 203 of the AV amplifier 20.
Further, the connection information is configured to include a plurality of response commands
for responding to the confirmation command, which are output from the control unit 203 to the
control unit 110, and the S / PDIF terminals 205a to 205c are each provided with the S / PDIF. It
is information indicating whether or not the cable 45 is connected.
[0118]
[Sound Effect Reproduction Processing in Television] Next, reproduction processing of sound
effects in the television 10 will be described with reference to FIG.
FIG. 4 is a flow chart showing a flow of sound effect reproduction processing in the television 10
according to the present embodiment.
Here, the case where the sound effect is an operation sound output (reproduced) when the user
operates the remote control will be described as an example.
Further, in the present embodiment, a case where sound is set to be output only from the AV
09-05-2019
29
amplifier 20 will be described as an example, but of course the present invention is not limited to
this, and the sound is a television The present invention can also be applied to the case where the
signal is output from both of 10 and the AV amplifier 20.
[0119]
As shown in FIG. 4, first, the remote control signal receiver 109 receives a remote control signal
(step S201).
The remote control reception unit 109 supplies the received remote control signal to the control
unit 110.
[0120]
The control unit 110 specifies the type (content) of the remote control operation indicated by the
supplied remote control signal (step S202), and determines whether to reproduce the operation
sound according to the specified remote control operation (step S203).
In addition, the determination method of whether to reproduce the operation sound in the
control part 110 can mention the method of determining whether the content of the specified
remote control operation is the operation content which should reproduce the operation sound.
However, it is not limited to this.
[0121]
If it is determined that the operation sound corresponding to the specified remote control
operation is to be reproduced (YES in step S203), the control unit 110 determines the type of
operation sound to be reproduced and the reproduction time (step S204).
The type of operation sound to be reproduced may be determined by reading from the memory
108 the operation sound associated with remote control operation (for example, depression of a
cursor button, depression of a color button, etc.). Further, the reproduction time may be
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determined according to the operation time when the user operates the remote control, or may
be determined by adopting the reproduction time preset for the type of operation sound.
[0122]
After determining the type of operation sound and the playback time, the control unit 110
determines the value of the audio device flag stored in the memory 108 (step S205).
[0123]
If it is determined that the value of the audio device flag is "2" (2 in step S205), the control unit
110 outputs the determined operation sound from the AV amplifier 20 for the determined
reproduction time to the audio processing unit 105. In this way, the AV amplifier 20 is notified of
an instruction to output operation sound data.
[0124]
When the notification from the control unit 110 is acquired, the audio processing unit 105 reads
the operation sound data from the memory 108 and supplies the read operation sound data to
the digital audio transmitter 114.
The digital audio transmitter 114 outputs the signal to the AV amplifier 20 via the S / PDIF cable
45 connected to the S / PDIF terminal 115 (step S206).
[0125]
Also, when the reproduction time notified from the control unit 110 has elapsed, the sound
processing unit 105 stops the supply of the sound effect data to the digital audio transmitter 114
(step S207).
[0126]
When the supply of the sound effect data from the sound processing unit 105 is stopped, the
digital audio transmitter 114 stops the output of the sound effect data to the AV amplifier 20
(step S208).
[0127]
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31
If it is determined that the value of the audio device flag is 1 (1 in step S205), the control
unit 110 cancels the mute setting set in the television 10 (step S209).
The control unit 110 also instructs the audio processing unit 105 to supply the operation sound
data to the amplifier 106 so that the operation sound determined in step S 204 is output from
the speaker 107 for the determined reproduction time. .
Note that the mute setting is, for example, a setting in which no sound is output from the
television 10 or a setting in which the volume of the sound to be output is zero.
[0128]
When the notification from the control unit 110 is acquired, the audio processing unit 105 reads
the operation sound data from the memory 108 and supplies the read operation sound data to
the amplifier 106.
The amplifier 106 drives the speaker 107 such that the operation sound indicated by the
supplied operation sound data is output (step S210).
[0129]
Further, when the reproduction time notified from the control unit 110 elapses, the sound
processing unit 105 stops the supply of the sound effect data to the amplifier 106. When the
supply of the operation sound data from the audio processing unit 105 is stopped, the amplifier
106 stops the driving of the speaker 107 and stops the output of the operation sound (step
S211).
[0130]
When the output of the sound effect is stopped, the control unit 110 sets again the mute setting
that has been canceled (step S212).
09-05-2019
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[0131]
When it is determined that the value of the audio device flag is 0 ( 0 in step S205),
control unit 110 causes sound processing unit 105 to superimpose an effect sound on the sound
output from speaker 107. Send an instruction to output.
When the value of the audio device flag is 0 , the AV amplifier 20 is not connected via the
HDMI cable 40, so the audio (TV audio) indicated by the audio signal is output from the speaker
107 of the television 10 It is done.
[0132]
When the notification from the control unit 110 is acquired, the audio processing unit 105 reads
the operation sound data from the memory 108, and the sound (TV sound) indicated by the
sound signal is output so that the operation sound indicated by the supplied operation sound
data is output. To the amplifier 106 (step S213).
[0133]
Further, when the reproduction time notified from the control unit 110 has elapsed, the audio
processing unit 105 stops the superposition of the operation sound (step S214).
[0134]
When it is determined that the operation sound corresponding to the remote control operation is
not to be reproduced (NO in step S203), the control unit 110 does not output the sound effect,
and ends the sound effect reproduction process.
[0135]
According to the above-described configuration, the television 10 outputs the audio data of the
MPEG2 stream and the sound effect data to the AV amplifier 20 via different transmission cables.
As a result, the audio represented by the audio data of the MPEG2 stream and the audio
09-05-2019
33
represented by the sound effect data can be output from the AV amplifier 20 without causing
deterioration of the audio represented by the audio data of the MPEG2 stream.
[0136]
Moreover, since the television 10 does not need to superimpose and transmit the audio data and
the sound effect data of the MPEG2 stream, it is not necessary to further include a component for
the superimposing and transmission.
That is, only by connecting the television 10 and the AV amplifier 20 via two different cables, the
television 10 can use both the audio data and the sound effect data of the MPEG2 stream to the
AV amplifier 20 without increasing the cost. It can be output.
[0137]
Therefore, the television 10 can prevent the deterioration of the sound quality, suppress the
increase in cost, and can output the audio data and the sound effect data of the MPEG2 stream.
[0138]
Further, according to the above configuration, when the S / PDIF cable 45 is not connected to the
AV amplifier 20, the television 10 can output the sound represented by the operation sound data
from the speaker 107.
Thus, the television 10 can prevent the sound represented by the sound effect data from being
not output when the S / PDIF cable 45 is not connected to the AV amplifier 20.
[0139]
[Sound Effect Reproduction Processing in AV Amplifier] Next, reproduction processing of sound
effects in the AV amplifier 20 will be described with reference to FIG.
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34
FIG. 5 is a flow chart showing a flow of sound effect reproduction processing in the AV amplifier
20 according to the present embodiment.
[0140]
As shown in FIG. 5, the AV amplifier 20 determines whether it is in a state of viewing an
apparatus compatible with the reproduction of sound effects (step S301). In addition, as a
determination method to determine whether or not a device supporting playback of sound effects
is in a state of viewing, for example, a device in Active is inquired using a CEC command, and the
reply command is received. By doing this, it is possible to identify the device being viewed, and
further, to make a determination method by confirming whether there is a history of reception of
the sound effect correspondence inquiry command from the device.
[0141]
When it is determined that the television 10 supports reproduction of sound effects (YES in step
S301), the control unit 203 refers to the SPDIF connection terminal information stored in the
memory, and the lock state of the S / PDIF terminal 205b Is detected (step S302). In the present
embodiment, as described above, the SPDIF connection terminal information indicates that the S
/ PDIF terminal 205 b is connected to the television 10.
[0142]
In addition, the control unit 203 determines whether the S / PDIF terminal 205b is in a locked
state (that is, whether or not sound effect data is input from the television 10) (step S303).
[0143]
If it is determined that the S / PDIF input is not locked (NO in step S303), the control unit 203
detects the locked state of the S / PDIF input again.
That is, the control unit 203 repeats the processing of steps S302 to S303 until it is determined
that the S / PDIF input is locked.
09-05-2019
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[0144]
When it is determined that the S / PDIF input is locked (YES in step S303), control unit 203
receives an operation sound indicated by operation sound data input from television 10 using
ARC of HDMI cable 40. The audio processing unit 206 is instructed to superimpose the audio
data indicated by the audio data of the MPEG2 stream and output the superimposed audio.
[0145]
The audio processing unit 206 superimposes the operation sound signal obtained by decoding
the operation sound data on the sound signal obtained by decoding the audio data of the MPEG2
stream according to the notification from the control unit 203, and supplies the superimposed
signal to the amplifier 207.
The amplifier 207 drives the speaker 208 so as to output the audio and the operation sound
indicated by the supplied audio signal and the operation sound signal (step S304).
[0146]
According to the above-described configuration, the AV amplifier 20 can prevent deterioration of
the quality of sound in the television 10, can suppress an increase in cost, and can output sound
represented by sound data and sound effect data of the MPEG2 stream.
[0147]
Further, according to the above-described configuration, the AV amplifier 20 is input through the
S / PDIF terminal 205 other than the S / PDIF terminal 205 b whose control unit 203 confirms
that the S / PDIF cable 45 is connected. The audio represented by the data is not superimposed
on the audio represented by the audio data of the MPEG2 stream and is not output.
Therefore, even when cables other than the HDMI cable 40 and the S / PDIF cable 45 are
connected to the AV amplifier 20, the AV amplifier 20 is input via the cables other than the
HDMI cable 40 and the S / PDIF cable 45. It is possible to prevent the voice represented by the
data from being output.
09-05-2019
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[0148]
Second Embodiment Another embodiment of the present invention will be described below with
reference to FIG. Note that, for convenience of explanation, components having the same
functions as the components according to the first embodiment are assigned the same reference
numerals and descriptions thereof will be omitted. In the present embodiment, differences from
the first embodiment will be mainly described.
[0149]
In the present embodiment, the playback device is realized by a recorder, and the audio output
device is realized by an AV amplifier, and hence the recorder and the AV amplifier are hereinafter
referred to, respectively.
[0150]
[Audio Reproduction System] FIG. 6 is a block diagram showing an outline of the configuration of
the audio reproduction system 2 according to the present embodiment.
As shown in FIG. 6, the television 11 and the AV amplifier 21 constituting the audio reproduction
system 2 according to the present embodiment are connected by an HDMI cable 41. The AV
amplifier 21 and the recorder 31 are connected by an HDMI cable (first transmission cable) 42
and an S / PDIF cable (second transmission cable) 46.
[0151]
Hereinafter, the configuration of each of the television 11, the AV amplifier 21, and the recorder
31 will be described with reference to FIG.
[0152]
Configuration of Television The television 11 according to the present embodiment has the same
configuration as the television 10 according to the first embodiment, and thus the description
thereof is omitted here.
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37
Note that FIG. 6 shows the control unit 110, the HDMI receiver 112, and the HDMI terminal 113
for convenience in order to show the connection with the AV amplifier 21, but the television 11
is a television 10 according to the first embodiment. The same components as the other
components provided in
[0153]
(Configuration of AV Amplifier) First, the configuration of the AV amplifier 21 according to the
present embodiment will be described with reference to FIG. The AV amplifier 20 according to
the first embodiment except that the AV amplifier 21 includes an HDMI transmitter 211, an
HDMI terminal 212, an HDMI receiver (first acquisition unit) 213, an HDMI terminal 214, and an
audio processing unit 216. The same configuration as
[0154]
The HDMI receiver 213 receives video data, audio data, and clock data input from the recorder
31 via the TMDS line of the HDMI cable 42 connected to the HDMI terminal 214.
[0155]
The HDMI transmitter 211 transmits video data, audio data, and clock data via the TMDS line of
the HDMI cable 41 connected to the HDMI terminal 212.
[0156]
The video data and audio data input to the HDMI receiver 213 and the video data and audio data
output from the HDMI transmitter 211 are, for example, video data of an MPEG2 stream
demodulated by the video processing unit 303 and the audio processing unit 304, and It may be
voice data.
[0157]
The audio processing unit 216 superimposes the sound effect data on the audio data of the
MPEG2 stream supplied from the HDMI transmitter 211.
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38
The audio processing unit 216, for example, decodes the supplied audio data of the MPEG2
stream into an audio signal, the sound effect decoding unit decodes sound effect data into a
sound effect signal, and superimposes the sound effect signal on the sound signal Can be
configured by an overlapping unit or the like.
[0158]
The audio processing unit 206 supplies the audio signal to the amplifier 207 so that the audio
and the sound represented by the audio signal and the sound effect are output from the speaker
208.
[0159]
Configuration of Recorder Next, the configuration of the recorder 31 according to the present
embodiment will be described with reference to FIG.
As shown in FIG. 6, the recorder 31 includes a tuner 301, a decoder 302, a video processing unit
303, an audio processing unit 304, a memory 305, a remote control reception unit 306, a control
unit (detection means) 307, and a digital audio transmitter (second Output means) 308, S / PDIF
terminal 309, HDMI transmitter (first output means), and HDMI terminal 311 are provided.
[0160]
The tuner 301 is a tuner for receiving a broadcast program.
Examples of the tuner 301 can include a terrestrial digital broadcast tuner that receives a
broadcast program broadcast by terrestrial digital broadcast, and a satellite broadcast tuner that
receives a broadcast program broadcast by satellite broadcast.
[0161]
The decoder 302 is means for demodulating a broadcast program received by the tuner 301 and
09-05-2019
39
dividing it into a video part and an audio part.
The decoder 302, for example, an RF unit that converts a received signal of a received broadcast
program into an analog baseband signal, an ADC unit that converts an analog baseband signal
into a digital baseband signal, and demodulates an MPEG2 stream from the digital baseband
signal. A demodulation unit, and a division unit that divides the MPEG2 stream into a video part
(video data of the MPEG2 stream) and an audio part (audio data of the MPEG2 stream
(compressed audio stream data)) can be configured. The video data and audio data of the MPEG2
stream decoded by the decoder 302 are supplied to the video processing unit 303 and the audio
processing unit 304, respectively.
[0162]
The video processing unit 303 supplies the video signal obtained by decoding the supplied video
data of the MPEG2 stream to the HDMI transmitter 310.
[0163]
The video processing unit 303 includes, for example, a decoding unit that decodes the video data
of the supplied MPEG2 stream into a video signal, and a processing unit that performs
processing of adjusting the image quality and scaling of the video signal. Can.
[0164]
The audio processing unit 304 supplies the supplied audio data of the MPEG2 stream to the
HDMI transmitter 310.
The audio processing unit 304 may supply the audio data of the supplied MPEG2 stream as it is
to the HDMI transmitter 310, or may supply the audio signal obtained by decoding the audio
data of the MPEG2 stream to the HDMI transmitter 310.
[0165]
The audio processing unit 304 includes, for example, a decoding unit that decodes audio data of
the supplied MPEG2 stream into an audio signal, and a processing unit that performs processing
of adjusting the sound quality of the audio signal and processing of adjusting the volume. be able
to.
09-05-2019
40
[0166]
The sound processing unit 304 reads the sound effect data from the memory 305 in accordance
with an instruction from the control unit 307.
Further, when the broadcast program received by the tuner 301 includes information instructing
to output an alarm sound, the audio processing unit 304 reads the alarm sound data from the
memory 305.
[0167]
The memory 305 stores sound effect data (other sound data).
The sound effects may include, for example, an operation sound that is output when a remote
control operation is received, a ringing tone of a videophone system, and an alarm sound of an
emergency earthquake alert.
[0168]
The remote control reception unit 306 receives a remote control signal transmitted by the user
operating the remote control. The remote control reception unit 306 supplies the received
remote control signal to the control unit 110.
[0169]
The control unit 307 controls each unit included in the recorder 31. Further, the control unit 307
controls each unit provided in the recorder 31 in accordance with the remote control signal
received by the remote control reception unit 306. Also, when receiving the remote control
signal, the control unit 307 notifies the audio processing unit 304 to read out from the memory
305 an operation sound corresponding to the content of the remote control operation indicated
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41
by the remote control signal.
[0170]
Further, the control unit 307 performs connection confirmation with the AV amplifier 21 by
transmitting and receiving a vendor command to and from the AV amplifier 21 via the CEC line
of the HDMI cable 42 connected to the HDMI terminal 311.
[0171]
The HDMI transmitter 310 outputs video data, audio data, and clock data of an MPEG2 stream
through the TMDS line of the HDMI cable 42 connected to the HDMI terminal 311.
[0172]
In the present embodiment, although the case where the recorder 31 is connected to the AV
amplifier 21 has been described as an example, the present invention is not limited to this, and
for example, a set top box (STB for cable television) ) May be adopted.
[0173]
The connection confirmation process and the sound effect reproduction process according to the
present embodiment are the same as the connection confirmation process and the sound effect
reproduction process according to the first embodiment, and thus the description thereof is
omitted here.
[0174]
[Program and Recording Medium] Each block of the television 10, the AV amplifier 20, and the
recorder 31 may be realized as hardware by a logic circuit formed on an integrated circuit (IC
chip), or a CPU (Central Processing Unit). May be realized in software.
[0175]
In the latter case, the television 10, the AV amplifier 20, and the recorder 31 are a CPU that
executes instructions of a program that implements each function, a ROM (Read Only Memory)
that stores the program, and a RAM (Random Access Memory) that expands the program. And a
storage device (recording medium) such as a memory for storing the program and various data.
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Then, the object of the present invention is to make it possible for a computer to read program
codes (execution format program, intermediate code program, source program) of control
programs of the television 10, the AV amplifier 20 and the recorder 31 which are software for
realizing the functions This can also be achieved by supplying the recorded recording medium to
each of the television 10, the AV amplifier 20 and the recorder 31, and reading out and
executing the program code recorded on the recording medium by the computer (or CPU or
MPU). is there.
[0176]
Examples of the recording medium include tapes such as magnetic tapes and cassette tapes,
magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including
optical disks such as CD-ROM / MO / MD / DVD / CD-R. , IC cards (including memory cards) /
cards such as optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM /
flash ROM, or PLD (programmable logic device) or FPGA (field programmable gate array) Logic
circuits and the like can be used.
[0177]
Further, the program code may be supplied to the television 10 via a communication network.
This communication network is not particularly limited as long as the program code can be
transmitted.
For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network,
Virtual Private Network, telephone network, mobile communication network, satellite
communication network, etc. can be used.
Also, the transmission medium that constitutes this communication network may be any medium
that can transmit the program code, and is not limited to a specific configuration or type.
For example, even if wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone
line, ADSL (Asymmetric Digital Subscriber Line) line, infrared such as IrDA or remote control,
Bluetooth (registered trademark), IEEE 80211 wireless, HDR (High Data) It is also possible to use
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radio such as Rate), Near Field Communication (NFC), Digital Living Network Alliance (DLNA),
mobile phone network, satellite link, terrestrial digital network and the like.
[0178]
It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect.
The scope of the present invention is indicated not by the above description but by the claims,
and is intended to include all modifications within the meaning and scope equivalent to the
claims.
[0179]
The present invention can be suitably applied to content reproduction devices such as televisions,
displays, monitors and the like.
[0180]
10 TV (playback apparatus) 11 TV 20, 21 AV amplifier (audio output apparatus) 31 Recorder
(playback apparatus) 40, 42 HDMI cable (first transmission cable) 41 HDMI cable 45, 46 S /
PDIF cable (second Transmission cable) 101 tuner 102 decoder 103 video processing unit 104
monitor 105 audio processing unit 106 amplifier 107 speaker (audio output means) 108
memory 109 remote control receiver 110 control unit (detection means) 111 ARC output circuit
(first output means) 112 HDMI receiver 113 HDMI terminal 114 digital audio transmitter
(second output means) 115 S / PDIF terminal 201 HDMI transmitter (first acquisition means)
202, 212, 214 HDMI terminal 203 control unit (certainly Acknowledgment means) 204 digital
audio receiver (second acquisition means) 205 S / PDIF terminals (connection terminals) 205a,
205b, 205c S / PDIF terminals (connection terminals) 206, 216 audio processing unit 207
amplifier 208 speaker (audio output means ) 211 HDMI transmitter 213 HDMI receiver (first
acquisition means) 301 tuner 302 decoder 303 video processing unit 304 audio processing unit
305 memory 306 remote control reception unit 307 control unit (detection means) 308 digital
audio transmitter (second output means) 309 S / PDIF terminal 310 HDMI transmitter (first
acquisition means) 311 HDMI terminal
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