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JP2004229221

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DESCRIPTION JP2004229221
The present invention provides a tone generation system capable of increasing the number of
speakers without increasing the number of wires. A DVD unit incorporates a DVD player, a
monitor, and a speaker. The air conditioner 2 is installed on a wall behind the viewer, and has
two speakers and a circuit for driving the speakers set inside. The DVD unit 1 transmits audio
data to the air conditioner 2 through the power supply line L in accordance with the Internet
protocol. The audio data is received by the Internet system in the air conditioner 2 and stored in
an internal storage device. Then, the data in the storage device is read out, converted into an
analog signal, and output to the speaker. In this case, synchronization between the image data of
the DVD player and the audio signal is taken using an infrared signal. [Selected figure] Figure 1
Tone generation system
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
tone generation system with a reduced amount of wiring. 2. Description of the Related Art In
recent years, DVD home theater systems are becoming widespread. In this home theater system,
it is necessary to install a 5.1 channel multi-speaker system, and two speakers must also be
installed behind the audience seat. Recently, in the living room of a general household, in
addition to the audio system, many home electric appliances such as a television, a personal
computer, a cooler and the like are installed, and a lot of wiring is laid on the floor. For this
reason, when installing the home theater system, it is difficult to arrange the speaker line to the
rear of the audience seat in a manner that looks beautiful, and it takes time and effort. In
particular, the living room is a place where families can relax and welcome visitors, so unsightly
situations should be avoided as much as possible. As conventional techniques related to the
present application, those described in Patent Documents 1 and 2 are known. [Patent Document
1] Japanese Patent Application Publication No. 2000-59404 Patent Document 2 Japanese Patent
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Publication No. 4-13606 Problem to be Solved by the Invention The present invention has been
made in consideration of the above circumstances. It is an object of the present invention to
provide a tone generation system which can add speakers without increasing the number of
wires. The present invention has been made to solve the above-mentioned problems, and the
invention according to claim 1 comprises a main body unit for outputting musical tone data, and
said musical tone data. In the tone generation system, the air conditioner comprises: an air
conditioner provided with a tone generation unit for generating a tone based on the tone
generator; the main body unit comprises transmitting means for transmitting the tone data to a
power supply line according to the Internet protocol; Receiving means for receiving, according to
the internet protocol, musical tone data transmitted from the main unit through the power
supply line, storage means for temporarily storing the musical tone data received by the
receiving means, and data in the storage means A tone signal generating means for generating a
tone signal, and the tone signal generating means A tone generation system characterized by
comprising a speaker for generating musical tones based on the made the tone signal. According
to a second aspect of the present invention, in the musical tone generation system according to
the first aspect, the main body unit further comprises infrared transmission means for converting
synchronization data into an infrared signal and transmitting the infrared signal to the air
conditioner. The air conditioner receives an infrared signal transmitted from the main body unit
and demodulates the synchronization data. The musical tone signal generation unit is based on
the synchronization data output from the infrared reception unit. And synchronizing means for
determining the timing of tone signal generation in the above.
[0008] The invention according to claim 3 is the tone generation system according to claim 1 or
2, wherein the air conditioner stores the cancellation data of the air conditioner operation noise,
and the cancellation data. And a cancellation sound generation unit that generates a cancellation
signal based on the generated signal and outputs the cancellation signal to the speaker. BEST
MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to the drawings. FIG. 1 is a diagram showing an entire
configuration of a DVD system to which a tone generation system according to an embodiment of
the present invention is applied. In the figure, reference numeral 1 is a DVD unit in which a DVD
player, a monitor and a speaker are incorporated, and is installed on the floor of the living room.
An air conditioner 2 is installed on a wall behind the viewer. Inside the air conditioner 2, two
speakers and a circuit for driving the speakers are set. Moreover, the code ¦ symbol L is a
commercial power supply line. FIG. 2 is a perspective view of the air conditioner 2. In this figure,
3 is an air intake, 4 is a blowout port, 5 and 6 are speakers, 7 is a microphone, 8 is an infrared
light receiving portion, and 9 is an outlet. FIG. 3 is a block diagram showing the electrical
configuration of the air conditioner 2. In this figure, 11 is an air-conditioning system, and a
motor, a fan, a heat exchange radiator, a temperature control circuit, an infrared remote control
receiver, etc. are provided. An audio system 12 is shown in detail in FIG. In FIG. 4, reference
numeral 15 denotes a data interface, which receives audio data via a bus line B1 and outputs
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control data. A DSP (Digital Signal Processor) 16 decodes MP3 compressed audio data and
detects air conditioner operation noise supplied from the microphone 7 through the amplifier 17,
and cancels out the detected air conditioner operation noise, and the waveform It is generated
based on the data in the ROM 18. Here, an operation noise waveform at the time of the operation
of the air conditioner is stored in advance in the waveform ROM 18. The DSP 16 reads the
operation noise waveform and inverts the phase to generate noise cancellation data. The DSP 16
also receives audio data from the data interface 15 and outputs the audio data to a DAC (digital /
analog converter) 19. The DAC 19 converts audio data or air conditioner operation noise
cancellation data output from the DSP 16 into an analog signal, and outputs the analog signal to
the speakers 5 and 6 through the amplifier 20.
In FIG. 3, reference numeral 24 denotes an internet system, which receives data supplied from
the DVD unit 1 of FIG. 1 via a power line according to the internet protocol and outputs it to a
bus line B1, and also via a bus line B1. The data supplied is output to the DVD unit 1 of FIG. 1
through the power line according to the Internet protocol. Various data downloaded via the
Internet line include on / off control data for remote control of the air conditioner system 11,
temperature control data, volume data for amplifier control of the audio system 12, MP3 audio
data to be audio-reproduced, and DVD There are surround sound data and the like output from
the player. A storage device 26 temporarily stores MP3 audio data and surround sound data
supplied via the Internet system 24. Reference numeral 28 denotes a CPU (central processing
unit) which controls each part of the air conditioner 2. A ROM (read only memory) 29 stores a
control program of the CPU 28. FIG. 5 is a block diagram showing the configuration of the DVD
unit 1 of FIG. In this figure, reference numeral 30 denotes a CPU which controls each part, 31
denotes a ROM storing a program of the CPU 30, and 32 denotes a DVD driver. The DVD driver
reads compressed audio data and compressed video data and time stamp data from a DVD disk,
outputs audio data and time stamp data to the audio decoder 34, and outputs video data and
time stamp data to the video data buffer 35. . Here, the time stamp data is time information for
synchronously reproducing audio data and video data, and is recorded as a signal format of a
DVD disc. The audio decoder 34 decodes the compressed audio data received from the DVD
driver 32 and outputs the time stamp data and the time stamp data to the power line DSL
MODEM 38 via the bus line B2. Power line DSL MODEM 38 outputs the audio data and time
stamp data received from audio decoder 34 to Internet system 24 of FIG. 3 of air conditioner 2 of
FIG. 1 via outlet 39 and the power supply line according to the Internet protocol. The audio data
and time stamp data are stored in the storage device 26 of FIG. 3 via the Internet system 24 of
FIG.
The video data buffer 35 temporarily stores compressed video data and time stamp data output
from the DVD driver 32. Then, in response to an instruction from the CPU 30, the compressed
video data is output to the video decoder 41 and the time stamp data is output to the infrared
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transmitter 40. The video decoder 41 decodes the compressed video data and outputs it to the
monitor 43. The infrared transmitter 40 converts the time stamp data into an infrared signal and
transmits it to the air conditioner 2. This infrared signal is converted into electrical data by the
infrared remote control receiver in the air conditioner system 11 of FIG. 3 of the air conditioner
2 of FIG. 1, and is output to the CPU 28. The CPU 28 reads audio data from the storage device 26
based on the time stamp data, and outputs the audio data to the audio system 12. Reference
numeral 44 denotes a power supply circuit, which generates various DC power supplies based on
the commercial power supplied via the outlet 39 and outputs the generated DC power to each
part. In such a configuration, when audio data is transferred to the Internet by the power line
DSL between the DVD unit 1 and the air conditioner 2 of FIG. 1, the audio data is transferred in
units of packets in accordance with the Internet protocol. Therefore, it is necessary to
synchronize the reproduction of video data and audio data of the DVD player. In order to
synchronously reproduce the video data and the audio data, the present embodiment operates in
the following procedure. In the DVD unit 1 shown in FIG. 5, audio data and time stamp data read
from the DVD driver 32 are input to the audio decoder 34, and video data and time stamp data
are temporarily stored in a video data buffer. Audio data and time stamp data are output to the
indoor power line Internet line via the power line DSL MODEM 38 and the power outlet 39.
Then, it is stored in the storage device 26 via the Internet system 24 of FIG. 3 of the air
conditioner 2 of FIG. When all audio data and time stamp data are written to the storage device
26, the CPU 28 sends a video start signal to the DVD unit 1 via the Internet system 24 and the
indoor power line Internet circuit. The video start signal is input to the CPU 30 via the outlet 39
in FIG. 5 of the DVD unit 1 in FIG. 1 and the power line DSL MODEM 38.
The CPU 30 receives the video start signal and outputs a control signal to the video data buffer
35. The video data buffer 35 receives this control signal and outputs video data and time stamp
data. The output video data is decoded by the video decoder 41 and output to the monitor 43.
The time stamp data is converted into an infrared signal by the infrared transmitter 40 and
transmitted to the air conditioner 2 of FIG. The infrared signal is received by an infrared remote
control receiver in the air conditioner system 11 of FIG. 3, converted into time stamp data by an
electric signal, and input to the CPU 28. The CPU 28 compares the time stamp data with the time
stamp data stored in the storage device 26 to read out the audio data matching the time stamp
data from the storage device 26 and outputs the read audio data to the audio system 12. This
audio data is input to the DAC 19 through the data interface 15 and the DSP 16 of the audio
system 12 shown in FIG. 4, where it is converted into an analog signal and supplied to the
speakers 5 and 6 through the amplifier 20. As a result, musical tones synchronized with the
video data are generated from the speakers 5 and 6. As described above, according to the above
embodiment, in order to synchronize the reproduction of the video data in the DVD unit 1 of FIG.
1 and the reproduction of the audio data in the air conditioner 2, the time stamp data from the
DVD unit 1 to the air conditioner 2 It is the feature that it is transferred by. As described above,
according to the present invention, the air conditioner is provided with the speaker and the
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circuit for driving the speaker, and audio data is transmitted to the air conditioner via the power
line Internet to drive the speaker. Because of this, it is possible to add speakers without
increasing the wiring. As a result, for example, by transmitting surround data of the DVD home
theater system to the air conditioner via the power line Internet and reproducing the surround
data with the speakers, the installation of rear speakers and the cable wiring required in the
conventional DVD home theater system become unnecessary. In addition, music data downloaded
via the power line internet can be reproduced when the air conditioner is not used, and BGM can
be streamed to the living room. Also, it becomes possible to remotely control the air conditioner
from outside the house via the Internet.
For example, when you go out, you can use the mobile phone to connect to the Internet, and you
can turn on / off the air conditioner and control the temperature. Further, according to the
invention of claim 3, the noise of the operation noise of the air conditioner can be generated to
make the air conditioner quiet. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram
showing an overall configuration of a tone generation system according to an embodiment of the
present invention. 2 is a perspective view of the air conditioner 2 in FIG. 3 is a block diagram
showing an electrical configuration of the air conditioner 2 in FIG. 4 is a block diagram showing
the configuration of the audio system 12 in FIG. 3; 5 is a block diagram showing a configuration
of a DVD unit 1 in FIG. [Description of the code] 1 DVD unit 2 air conditioner 5 6 6 speaker 7
microphone 8 infrared receiver, 9 outlet 11 air conditioner system 12 audio system 16 DSP 18
Waveform ROM 24 Internet system 26 Storage device 28 CPU 29 ROM 30 CPU 31 31 ROM 32
DVD driver 34 Audio decoder 35 Video data buffer 38 Power line DSL MODEM , 40 ... infrared
transmitter, 41 ... video decoder.
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