JP3210980

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DESCRIPTION JP3210980
Abstract: To provide a broadcast host device for performing signal transmission with a plurality
of receiving devices by a predetermined communication protocol. A broadcast host device scans
an input module 101 for receiving an input audio signal and a plurality of wireless signal
channels that can be transmitted, determines the signal strength of the plurality of wireless
signal channels, and determines a channel signal strength distribution. A channel signal strength
scan module 107 for providing a result, an available channel judgment module 108 for providing
a channel judgment signal from the channel signal strength distribution judgment result, a
channel judgment signal, and at least one of the channel judgment signals. A transmission
channel selection module 103 for selecting a radio signal channel as a transmission channel of
an output audio signal, and an antenna module 106 for transmitting an output audio signal in a
wireless format and receiving a notification signal. [Selected figure] Figure 2
Wireless broadcast speaker system and broadcast host device
[0001]
The present invention relates to a wireless broadcast speaker system, and more particularly to a
wireless broadcast speaker system having a plurality of receiving devices.
[0002]
Although the audio system has conventionally performed audio transmission in a wired system,
with the active development of wireless transmission technology, the audio system can transmit
excellent voice by a wireless system.
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However, the playback system combined with the current Bluetooth speaker and audio playback
host is limited to the limit of the pairing number of the communication method of Bluetooth
(registered trademark) and the size of the installation area, and the number of speakers is
increased in real time The problem is that it can not be done and the installation position is
limited.
[0003]
In addition to being able to limit the size of the installation area, it is clearly an important issue in
the industry how to provide an audio reproduction system capable of increasing the number of
speaker devices.
[0004]
Embodiments of the present invention provide a wireless broadcast speaker system comprising a
broadcast host device for receiving an input audio signal and converting the input audio signal to
a wireless output audio signal, and a plurality of receiving devices.
The broadcast host device includes an input module for receiving an input audio signal, an audio
signal processing module for processing various audio characteristics of the input audio signal
and performing optimization processing, and a plurality of wireless signal channels that can be
transmitted. Channel signal strength scan module for scanning, judging signal strengths of a
plurality of radio signal channels, and providing channel signal strength distribution judgment
results, and available channels providing channel judgment signals from channel signal strength
distribution judgment results A determination module, a transmission channel selection module
for receiving a channel determination signal and selecting at least one radio signal channel from
the channel determination signal as a transmission channel of a radio output audio signal, and
converting an input audio signal to a radio output audio signal Wireless for Comprising a
receiving module, an antenna module for and receives a notification signal or transmits a radio
output audio signal. The receiving device is optimized for an antenna module for receiving a
wireless output audio signal, a wireless transmission / reception module for converting the
wireless output audio signal into a receiving audio signal, and various audio characteristics of the
receiving audio signal. A signal processing module for performing programming, and a speaker
module for reproducing a reception side audio signal processed by the signal processing module.
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[0005]
In the wireless broadcast speaker system according to the embodiment of the present invention,
since the broadcast host device performs signal transmission with a plurality of wireless speaker
devices by the wireless communication method, the number of wireless speaker devices can be
continuously increased. Accordingly, the position of the wireless speaker device can be provided.
Therefore, not only the number but also the length of the wire, for example, the installation
method of the acoustic system in a large area such as a hypermarket or a stadium can be
installed more flexibly. According to this, the wireless broadcast speaker system of the
embodiment of the present invention does not have to be restricted to wire, space and speaker
power.
[0006]
FIG. 1 shows a schematic view of a wireless broadcast speaker system according to an
embodiment of the present invention. FIG. 1 shows a schematic view of a broadcast host
apparatus according to an embodiment of the present invention. FIG. 1 shows a schematic view
of a wireless speaker device according to an embodiment of the present invention.
[0007]
The above description of the present invention and the following embodiments are intended to
illustrate the principle of the present invention by way of example and to provide a further
explanation of the claims of the present invention. .
[0008]
Various exemplary embodiments will be described more fully hereinafter with reference to the
accompanying drawings, and the exemplary drawings show some exemplary embodiments.
However, the concepts of the present invention may be embodied in many different forms and
are not limited to the exemplary embodiments described herein. Rather, by providing these
exemplary embodiments, the present invention will be detailed and complete and will fully
convey the scope of the inventive concept to those skilled in the art. In the drawings, the size and
relative sizes of layers and sections may be exaggerated for clarity. Similar digital always refers
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to similar elements.
[0009]
In the present specification, various elements may be described in terms of first, second, third
and the like, but these elements should not be limited to these terms. These terms are to
distinguish one element from another. Therefore, the first element described later can be said to
be the second element and does not deviate from the teaching of the concept of the present
invention. As used herein, the term "and / or" includes any and all combinations of one or more
of the associated listed items.
[0010]
The wireless broadcast speaker system is described below by means of at least one embodiment
and with reference to the drawings, but the following embodiments are not intended to limit the
present disclosure. [Example of wireless broadcast speaker system of the present invention]
[0011]
Please refer to FIG. FIG. 1 is a schematic view of a wireless broadcast speaker system according
to an embodiment of the present invention.
[0012]
In the present embodiment, the wireless broadcast speaker system 1 includes the broadcast host
device 10 and a plurality of receiving devices. In the present embodiment, the wireless broadcast
speaker system 1 includes a first wireless speaker device 21, a second wireless speaker device
22, a third wireless speaker device 23, a fourth wireless speaker device 24, and a fifth And the
wireless speaker device 25 of FIG. That is, one broadcast host device 10 transmits the wireless
output audio signal to the first wireless speaker device 21, the second wireless speaker device
22, the third wireless speaker device 23, the fourth wireless speaker device 24 and the fifth. To
the wireless speaker device 25 of FIG. The first wireless speaker device 21, the second wireless
speaker device 22, the third wireless speaker device 23, the fourth wireless speaker device 24
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and the fifth wireless speaker device 25 are wirelessly transmitted from the broadcast host
device 10. After receiving the output audio signal, the wireless output audio signal is converted
into a receiving audio signal, audio signal processing is performed, and then the audio signal
processed audio signal is reproduced.
[0013]
Please refer to FIG. 2 and FIG. FIG. 2 is a schematic view of a broadcast host apparatus according
to an embodiment of the present invention. FIG. 3 is a schematic view of a wireless speaker
apparatus according to an embodiment of the present invention.
[0014]
In this embodiment, the broadcast host device 10 includes an input module 101, an audio signal
processing module 102, a transmission channel selection module 103, a transmission power
adjustment module 104, a wireless transmission and reception module 105, an antenna module
106, and a channel signal. An intensity scan module 107 and an available channel determination
module 108 are provided.
[0015]
In the present embodiment, the input module 101 is connected to the audio signal processing
module 102.
Audio signal processing module 102 is connected to transmission channel selection module 103.
The transmission channel selection module 103 is connected to the transmission power
adjustment module 104 and the available channel determination module 108. The transmission
power adjustment module 104 is connected to the wireless transmission / reception module 105.
The wireless transmission and reception module 105 is connected to the antenna module 106
and the channel signal strength scan module 107. The channel signal strength scan module 107
is connected to the available channel determination module 108.
[0016]
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The input module 101 is for receiving an input audio signal Sin transmitted from the outside. In
the present embodiment, the input module 101 can receive a microphone audio signal and a
music signal. The audio signal processing module 102 is for processing analysis and optimization
of various audio characteristics of the input audio signal Sin. The transmission channel selection
module 103 is for selecting one radio signal channel suitable for the broadcast host device 10 to
transmit a signal on a plurality of radio signal channels capable of transmitting an audio signal.
In the present embodiment, at least two or more radio signal channels capable of transmitting an
audio signal may be selected. The transmission power adjustment module 104 determines the
magnitude of power when transmitting an audio signal from the cleanness of the signal of the
wireless signal channel selected by the transmission channel selection module 103. That is, from
the degree of signal interference of the radio signal channel selected by the transmission channel
selection module 103, the transmission power adjustment module 104 determines the
magnitude of power when transmitting an audio signal. The wireless transmission and reception
module 105 is for converting the signal format of the input audio signal Sin into a wireless signal
transmission format. In the present embodiment, the wireless transmission / reception module
105 is a wireless communication module (Wireless Communication module). In this embodiment,
the wireless transmission / reception module 105 may allow the designer to define the
transmission signal format or the wireless communication module of the communication
protocol. The signal format or communication protocol of the wireless transmission and
reception module 105 is not limited in the present invention. The antenna module 106 is for
transmitting or receiving a wireless signal. In the present embodiment, the antenna module 106
is for transmitting the wireless output audio signal Sout and for receiving the notification signal.
[0017]
The channel signal strength scan module 107 is for scanning the signal strength in a plurality of
radio signal channels capable of transmitting audio signals, and providing channel signal
strength distribution judgment results to the available channel judgment module 108. The
available channel determination module 108 determines which radio signal channel is used from
the channel signal strength distribution determination result provided by the channel signal
strength scan module 107 and provides a channel determination signal to the transmission
channel selection module 103. . The transmission channel selection module 103 selects at least
one radio signal channel from the channel determination signal.
[0018]
In the present embodiment, after receiving the input audio signal Sin, the input module 101
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transmits the input audio signal Sin to the audio signal processing module 102, and performs an
audio characteristic processing program. The input audio signal Sin subjected to the audio
characteristic processing program of the audio signal processing module 102 is transmitted via
the wireless transmission / reception module 105 and the antenna module 106 via the wireless
signal channel selected by the transmission channel selection module 103. Do.
[0019]
In the present embodiment, the channel signal strength scan module 107 first performs signal
scan on a plurality of wireless signal channels that can currently transmit wireless audio signals.
That is, wireless communication signals of a plurality of wireless signal channels in the current
environment are received through the wireless transmission / reception module 105 and the
antenna module 106. As the current environment is flooded with radio signals, the interference
to radio transmissions is also relatively much improved. Accordingly, the channel signal strength
scan module 107 first performs signal scan on a plurality of wireless signal channels capable of
transmitting the wireless audio signal at present, determines the current wireless signal strength
distribution of the plurality of wireless signal channels, The strength distribution determination
results are provided to the available channel determination module 108. The available channel
determination module 108 provides a channel determination signal to the transmission channel
selection module 103 from the channel signal strength distribution determination result. That is,
the available channel determination module 108 selects at least one available wireless signal
channel from the channel signal strength distribution determination result and transmits it to the
transmission channel selection module 103. The available channel determination module 108
may also provide the transmission channel selection module 103 with a rank table of available
wireless signal channels. The transmission channel selection module 103 can transmit a wireless
audio signal in this time period using the radio signal channels in the order table of available
radio signal channels in order according to the order table of available radio signal channels. . In
the present embodiment, the channel signal strength scan module 107 performs signal scan on a
plurality of wireless signal channels in the current environment at predetermined time intervals,
regularly updates channel signal strength distribution judgment results, and transmits channels.
It allows the selection module 103 to always transmit the radio output audio signal Sout on a
radio signal channel with low interference.
[0020]
In the present embodiment, the first wireless speaker device 21, the second wireless speaker
device 22, the third wireless speaker device 23, the fourth wireless speaker device 24 and the
fifth wireless speaker device 25 have structures and functions. All are the same, so only the first
wireless speaker device 21 will be described below as an example, but the structure and function
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of the other wireless speaker devices will be omitted here.
[0021]
The first wireless speaker device 21 includes an antenna module 211, a wireless transmission /
reception module 212, a data analysis module 213, a signal processing module 214, a digitalanalog conversion module 215, an amplification module 216, and a speaker module 217. And a
reception channel switching module 218.
[0022]
The antenna module 211 of the first wireless speaker device 21 is for receiving the wireless
output audio signal Sout.
The wireless transmission and reception module 212 converts the received wireless output audio
signal Sout from the wireless signal transmission format to the receiving audio signal.
That is, the wireless transmission / reception module 212 converts the received wireless output
audio signal Sout from the wireless signal transmission format into an audio signal of digital
format capable of performing an audio processing program. The data analysis module 213 is for
determining whether or not there is data loss in the reception side audio signal (audio signal in
digital format). If the data analysis module 213 determines that there is a data loss in the
received audio signal on the receiving side, the data analysis module 213 mutes a reproduction
time interval in which part of the audio signal is missing. That is, the first wireless speaker device
21 does not reproduce any audio signal. Then, a channel switching signal is transmitted to the
broadcast host device 10 via the wireless transmission / reception module 212 and the antenna
module 211, and the broadcast host device 10 is notified that there is currently a data loss
phenomenon, and power improvement or wireless signal channel switching is performed. Be
careful to do that.
[0023]
The signal processing module 214 optimizes the audio characteristics through the reception side
audio signal confirmed by the data analysis module 213. That is, an optimization program is
performed on the receiving audio signal. Further, the optimized signal processing module 214 is
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provided to the digital-to-analog conversion module 215. The digital-to-analog conversion
module 215 converts the reception side audio signal from the digital format to the reception side
audio signal in the analog format, amplifies the audio signal through the amplification module
216, and reproduces the audio signal through the speaker module 217.
[0024]
In the present embodiment, the reception channel switching module 218 switches radio signal
channels from the reception channel information analyzed by the data analysis module 213. That
is, after the broadcast host device 10 scans a plurality of wireless signal channels, the reception
channel switching module 218 may cause that the signal interference of the wireless signal
channels currently transmitting wireless audio signals is not large, that is, the cleanness is not
sufficient. Having discovered, another radio signal channel with small signal interference is
selected as a transmission channel. At the same time, the broadcast host device notifies each
wireless speaker device of the wireless signal channel to be used next, before switching the
wireless signal channel. For example, the data analysis module 213 of the first wireless speaker
device 21 analyzes the wireless signal channel to be used next from the wireless output audio
signal or the converted receiving audio signal, and notifies the receiving channel switching
module The radio signal channel that needs to be used is switched, and the radio output audio
signal Sout transmitted from the broadcast host device is received.
[0025]
In the present embodiment, the broadcast host device 10 and the wireless speaker devices 21 to
25 can transmit signals by wireless communication (Wireless) to each other, and can increase the
number of wireless speaker devices without an upper limit. Therefore, the number of wireless
speaker devices is not limited in the present invention. However, in the present embodiment,
since the broadcast host device 10 and the wireless speaker devices 21 to 25 transmit signals to
each other wirelessly (wirelessly), the communication protocol of each other is a predetermined
communication protocol. Possible effects of the embodiment
[0026]
As described above, in the wireless broadcast speaker system according to the embodiment of
the present invention, since the broadcast host device performs signal transmission with the
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plurality of wireless speaker devices by the wireless communication method, the number of
wireless speaker devices can be continuously increased. The position of the wireless speaker
device can be provided according to the actual requirements. Therefore, not only the number but
also the length of the wire, for example, the installation method of the acoustic system in a large
area such as a hypermarket or a stadium can be installed more flexibly. According to this, the
wireless broadcast speaker system of the embodiment of the present invention does not have to
be restricted to wire, space and speaker power.
[0027]
The above description is only an embodiment of the present invention, and is not intended to
limit the scope of claims of the present invention.
[0028]
1 wireless broadcast speaker system 10 broadcast host device 21, 22, 23, 24, 25 wireless
speaker device 101 input module 102 audio signal processing module 103 transmission channel
selection module 104 transmission power adjustment module 105, 212 wireless transmission /
reception module 106, 211 antenna module 107 channel signal strength scan module 108
available channel determination module 213 data analysis module 214 signal processing module
215 digital to analog conversion module 216 amplification module 217 speaker module 218
reception channel switching module Sin input audio signal Sout wireless output audio signal
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