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DESCRIPTION JP2002044776

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DESCRIPTION JP2002044776
[0001]
TECHNICAL FIELD The present invention wirelessly transmits a music source of a personal
computer without adding a special interface to a conventional personal computer or audio
equipment, and receives and outputs the music source by the audio equipment. Relates to a
possible sound radio transmission system.
[0002]
2. Description of the Related Art Currently, music sources of personal computers are generally
heard by being output from a speaker built into the personal computer or an external speaker of
an optional device of the personal computer. If you want to enjoy those sounds with high-quality
audio devices in your home, you need to have a sound board with specific interface support built
into your computer, and connect the interface cable from the computer to the audio device.
Alternatively, it is necessary to provide an interface capable of linking to a personal computer on
the audio device side and connect a cable ("Dell Digital Audio Receiver"). For example, Japanese
Patent Application Laid-Open No. 11-27776 is known as a related known document.
[0003]
[0003] Therefore, the problem of the present invention is to transmit the music source of the
personal computer by radio, receive by the audio device and output it, the sound board of the
specific interface support is built in the personal computer It is possible to eliminate the need for
cable routing and cable routing, and to enable the music source of the personal computer to be
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listened to with high-quality audio equipment.
[0004]
Another object of the present invention is to make an audio device in this system a system which
does not require any additional function.
Further, it is possible to control a personal computer including an audio-related part necessary
for music source transmission, and the personal computer control can be wirelessly controlled by
remote control of any interface or control of an audio device side. In addition, wireless
transmission of the sound source corresponds to a plurality of frequencies to enable switching of
the transmission frequency, to simultaneously transmit the same source to a plurality of audio
devices, to a plurality of audio devices (a plurality of channels) Simultaneous transmission of
different sources, setting of frequency settings for a plurality of audio devices (multiple channels)
individually rather than individually, and channels for multiple audio devices individually Rather
than being able to be set collectively, its frequency setting / change is to be wirelessly
controllable by remote control of any interface or control of the audio device side.
[0005]
[Means for Solving the Problems] By wirelessly transmitting the music source of the personal
computer and receiving and outputting it by the audio device, the necessity of built-in sound
board of specific interface support and cable routing is eliminated. Listening to the music source
of the personal computer with high-quality audio equipment, making the audio equipment in
such a system that there is no need to add functions, and controlling the personal computer
including audio related parts necessary for music source transmission in that system. In order to
make it possible, the present invention is an interface unit that receives a music source from a
personal computer and is capable of controlling the personal computer including audio-related
parts, and is an interface unit supporting one standard interface of the personal computer. And
the music source from the interface unit A converter that converts audio data generally
supported by an audio device, a transmitter that transmits data received from the converter as a
wireless signal, a controller that controls functions of a personal computer including audiorelated parts, and the like It is comprised from the transmission system control part which
controls a conversion part, a control part, and a transmission part.
[0006]
The interface unit is a bus interface control unit that controls data transmission / reception of a
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plurality of functions such as implementation of the system as a device, music source
transmission, audio control unit control, etc., music source transmission of function identifier of
the system. It consists of a trusted endpoint and an audio control unit control endpoint.
[0007]
The conversion unit comprises a channel / frequency control unit for controlling the channel and
frequency of the radio to be transmitted, a converter unit for performing DA conversion with
respect to one standard interface of the personal computer, and a modulation unit for radio data.
[0008]
The control unit is composed of several task control units such as an audio output switching
control unit, a volume control unit, and a music source selection / output control unit.
The transmission system control unit includes a conversion unit, a transmission unit, a
conversion unit control unit that controls the control unit, a transmission unit control unit, a
control unit control unit, and a trigger input control unit that controls a trigger input to the
system.
[0009]
According to the present invention, the music source of the personal computer is transmitted to
the music source transmission end point by the interface unit and the bus interface control unit
of the present system by one standard interface of the personal computer.
The music source data sent to the music source endpoint is channel component control, channel
setting and frequency setting as required by the channel / frequency control unit, and then sent
to the converter unit to support one standard interface of the personal computer. Converted data
to an analog signal.
The analog signal converted by the converter unit is modulated by the modulation unit into a
radio signal generally supported by the audio device based on frequency information from the
channel / frequency control unit and sent to the transmission unit, and the radio signal is
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transmitted from the transmission unit Are sent to the audio device and output from the speaker
of the audio device.
[0010]
Further, according to the present invention, the control of the personal computer including the
audio related portion necessary for music source transmission is performed by inputting the
trigger of the personal computer control to the trigger input control unit of the transmission
system control unit. Control to each control unit corresponding to each function. The control unit
of each function uses the audio control unit control endpoint and issues a control command to
the personal computer with one standard interface of the personal computer.
[0011]
In order to enable personal computer control to be wirelessly controlled by remote control of any
interface or audio equipment side control, the present invention uses the remote control code or
radio signal to the trigger input control unit of the transmission system control unit. It has a
receivable function. According to the present invention, the remote control / radio signal
transmitted by pressing the remote control button corresponding to each control of the personal
computer or controlling the audio device side is received by the trigger input control unit and
trigger input is performed to control the personal computer carry out.
[0012]
Wireless transmission of sound source corresponds to a plurality of frequencies to enable
switching of the transmission frequency, to simultaneously transmit the same source to a
plurality of audio devices, to a plurality of audio devices (a plurality of channels) The
simultaneous transmission of different sources, the simultaneous setting of the frequency
settings for a plurality of audio devices (multiple channels) instead of the individual setting, and
the setting of channel settings for a plurality of audio devices individually According to the
present invention, the channel / frequency control unit of the conversion unit controls division
generation of channel components to enable collective setting instead of the channel component
control unit, and the conversion unit control unit of the transmission system control unit. It has a
channel setting unit that receives an input and performs channel setting, and a frequency setting
unit that performs frequency setting.
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[0013]
The channel component control unit comprises a channel component division unit for dividing a
channel component, and a channel component generation unit for adding additional information
from the channel setting unit to generate a channel component.
[0014]
The channel setting unit comprises a channel control unit which receives an input from the
conversion unit control unit and which controls a channel setting table, a channel setting table
which sets a use channel, and a channel selection unit which selects a use channel.
[0015]
The frequency setting unit comprises a frequency control unit which receives an input from the
conversion unit control unit and controls the frequency setting table, a frequency setting table
which sets the use frequency, and a frequency selection unit which selects the use frequency.
The frequency setting table is provided with a shift register capable of batch setting change of
the used frequency.
[0016]
According to the present invention, the frequency control unit of the frequency setting unit sets
the use frequency in the frequency setting table, receives the input from the transmission system
control unit and the conversion unit control unit, and selects the use frequency by the frequency
selection unit, By setting / changing the use frequency with respect to the modulation unit, it is
possible to switch the frequency corresponding to a plurality of transmission frequencies.
[0017]
Also, according to the present invention, the channel component control unit, the channel setting
unit, and the frequency setting unit are controlled to simultaneously transmit the music source of
the same component to a plurality of objects, thereby the same component for a plurality of
audio devices. Enable simultaneous transmission of music sources.
[0018]
Further, according to the present invention, the channel component control unit, the channel
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setting unit and the frequency setting unit are controlled, and the channel setting unit
distinguishes different additional information on different music sources into which components
are divided, The different music sources are modulated to different frequencies by the frequency
setting unit and simultaneously transmitted to a plurality of objects, thereby enabling
simultaneous transmission of different music sources to a plurality of audio devices.
[0019]
Further, according to the present invention, the frequency control unit performs setting of the
use frequency to the frequency setting table and shift register control of the frequency setting
table, and transmits a frequency setting / change command to a plurality of audio devices (a
plurality of channels). By doing this, different frequency batch settings can be made to a plurality
of audio devices (a plurality of channels) (a frequency setting / change command receiving
module is provided on the audio device side).
The channel control unit sets the use channel in the channel setting table, and transmits a
channel change / setting command to a plurality of audio devices, thereby enabling batch
channel setting to a plurality of audio devices (see FIG. The audio apparatus side has a frequency
setting / change command receiving module.
The present invention uses the remote control code or the wireless signal to the trigger input
control unit of the transmission system control unit so that frequency setting / change can be
wirelessly controlled by remote control of any interface or control of the audio device side. It has
a receivable function.
[0020]
According to the present invention, the remote control / radio signal transmitted by pressing the
remote control button according to the frequency change / setting, or controlling the audio
device side is received by the reception unit of the trigger input control unit and trigger input is
performed. Can control the frequency setting / change by radio.
[0021]
DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be
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described below with reference to the drawings.
FIG. 1 is a sound radio transmission system block diagram showing an embodiment of a sound
radio transmission system according to the present invention.
This sound radio transmission system 2 receives one music source from the interface unit 3 and
the interface unit 3 which can be easily connected to the personal computer with the standard
interface of the personal computer 1, and wireless data (generally supported by audio
equipment) A converter 4 for converting to FM as a wireless compatible standard, a transmitter 5
for transmitting data received from the converter 4 as a wireless signal, and a controller 6 for
controlling audio related parts of a personal computer The transmission system control unit 7
controls the conversion unit 4, the transmission unit 5, and the control unit 6.
Although in the present embodiment the sound radio transmission system is described as a
separate case from the personal computer, it is also possible to provide the FM transmission
function in the personal computer itself by providing it inside the case of the personal computer
body.
[0022]
The interface unit 3 is a standard interface of a personal computer, and is USB (or IEEE 1394 or
the like) in order to support multi-functions capable of controlling the personal computer such as
music source transmission from the personal computer and audio control.
FIG. 2 is a detailed block diagram of the sound radio transmission system showing one
embodiment of the sound radio transmission system according to the present invention. As
shown in FIG. 2, the interface unit 3 controls the data transmission / reception of a plurality of
functions such as implementation of the sound radio transmission system 2 as a device, music
source transmission, audio control unit control, etc. It comprises a music source transmission end
point 9 used at the time of music source transmission from the personal computer by a function
identifier possessed by the system, and an audio control unit control end point 10 used at the
control of the personal computer such as audio control. The bus interface control unit 8 performs
bus interface control to the music source communication endpoint 9 and the audio control unit
control endpoint 10 of these two functions.
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[0023]
As shown in FIG. 2, the conversion unit 3 comprises a channel / frequency control unit 11,
several USB-DA converter units 12a, 12b, 12c, and FM modulation units 13a, 13b, 13c. The
channel / frequency control unit 11 performs channel control on the music source data
transmitted from the music source transmission endpoint 9 of the interface unit 3 as necessary,
and adds channel control information to the music source data. The USB-DA converters 12a, 12b,
12c convert the data corresponding to the standard interface of the personal computer sent from
the channel / frequency controller 11 into analog signals and transmit them to the FM
modulators 13a, 13b, 13c. The FM modulators 13 a, 13 b and 13 c FM-modulate the analog
signal and transmit it to the transmitter 5. The transmitter 5 transmits the FM-modulated signal
by FM.
[0024]
As shown in FIG. 2, the control unit 6 comprises several task control units such as an audio
output switching control unit 14, a volume control unit 15, and a music source selection / output
control unit 16. Also, the transmission system control unit 7 controls the conversion unit 4, the
transmission unit 5, the conversion unit control unit 17 that controls the control unit 6, the
transmission unit control unit 18, the control unit control unit 19, and a trigger input that
controls a trigger input to the system. The control unit 20 is configured. The trigger input control
unit 20 of the transmission system control unit 7 notifies the control unit control unit when task
control triggers for several personal computers such as audio output switching control, volume
control, music source selection / output control, etc. are input. . The control unit control unit
distinguishes the trigger for each function, and transmits it together with accompanying
information to several task control units such as the audio output switching control unit 14, the
volume control unit 15, the music source selection / output control unit 16 and the like. Some
task control units such as the audio output switching control unit 14, the volume control unit 15,
the music source selection / output control unit 16, and the like each have an interface unit 3
with commands and data for executing tasks according to each task control unit. The control
point for controlling the personal computer is issued by the standard interface of the personal
computer using the audio control unit control endpoint 10 of FIG. The task control trigger input
to the trigger input control unit 20 of the transmission system control unit 7 may be input by
providing a control button connected to the trigger input control unit 20, or the trigger input
control unit 20 to the remote control or audio device A receiver capable of receiving a wireless
signal of the above may be provided and input may be performed wirelessly.
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[0025]
FIG. 3 is a block diagram of a channel / frequency controller showing one embodiment of a
sound radio transmission system according to the present invention. As shown in FIG. 3, the
channel / frequency control unit 11 controls the channel component division generation of the
channel component, and the channel setting unit 22 receives the input from the conversion unit
control unit of the transmission system control unit. , Frequency setting unit 23 for setting the
frequency. FIG. 4 is a detailed block diagram of a channel / frequency controller showing one
embodiment of a sound radio transmission system according to the present invention. As shown
in FIG. 4, the channel component control unit generates a channel component by adding a
channel component division unit 24 that divides the channel component of data transmitted from
the music source transmission endpoint and additional information from the channel setting unit.
And a channel component generation unit 25. The channel setting unit 22 has a channel control
unit 26 that controls the channel setting table 27 upon receiving an input from the conversion
unit control unit 17, a channel setting table 27 that sets a use channel, and a channel selection
unit 28 that selects a use channel.
[0026]
The frequency setting unit 23 receives the input from the conversion unit control unit 17 and
controls the frequency setting unit 30 for controlling the frequency setting table 30, the
frequency setting table 30 for setting the use frequency, and the frequency selection unit 31 for
selecting the use frequency. Have. The frequency setting table 30 is provided with a shift register
32 capable of batch setting change of the used frequency. The frequency control unit 29 of the
frequency setting unit 23 receives inputs from the transmission system control unit 7 and the
conversion unit control unit 17 and sets the frequency used in the frequency setting table 30.
The frequency selection unit 31 selects and notifies the frequency set in the frequency setting
table 30 to each of the FM modulation units 13a, 13b, and 13c. Each of the FM modulation units
13a, 13b, and 13c performs FM modulation on the frequency notified by the frequency selection
unit 31, and transmits the analog signal transmitted from the USB-DA converter units 12a, 12b,
and 12c to the transmission unit 5. It supports multiple transmission frequencies and enables
switching of the frequency.
[0027]
The same music source data divided by the channel component division unit 24 of the channel
component control unit 21 or the component division is not performed by the channel
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component division unit 24 and transmitted from the music source transmission endpoint 9 The
music source data of the same component is transmitted to each of the USB-DA converter units
12a, 12b and 12c, and the music source of the same component is simultaneously transmitted to
a plurality of targets, thereby simultaneously transmitting the music source of the same
component to a plurality of audio devices. Enable transmission.
[0028]
The channel setting unit 26 distinguishes different pieces of additional information on different
music source data divided by the channel component dividing unit 24 of the channel component
control unit 21 or modulates them to different frequencies by the frequency setting unit. By
simultaneously transmitting to a plurality of targets, it is possible to simultaneously transmit
different music sources to a plurality of audio devices (a plurality of channels).
[0029]
Further, the frequency control unit 29 controls the use frequency setting to the frequency setting
table 30 and controls the shift register 32 of the frequency setting table, and transmits a
frequency setting / change command to a plurality of audio devices (a plurality of channels).
Thus, it is possible to set different frequencies collectively to a plurality of audio devices (a
plurality of channels) (a frequency setting / change command receiving module is provided on
the audio device side).
) The frequency setting / change trigger input to the trigger input control unit 20 of the
transmission system control unit 7 may be input by providing a frequency setting / change
button connected to the trigger input control unit 20, or the trigger input control unit 20. A
receiver capable of receiving remote control signals and wireless data from an audio device may
be provided for wireless input.
[0030]
FIG. 5 is a music source radio transmission flowchart illustrating one embodiment of a sound
radio transmission system according to the present invention.
First, music source data is sent from the personal computer to the music source transmitting end
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point 9 through the standard interface USB of the personal computer. Then, the music source
transmission end point 9 transmits the music source data to the channel / frequency control unit
11. The channel / frequency control unit 11 performs channel control on the music source data
transmitted from the music source transmission endpoint 9 as necessary, and adds channel
information to the music source data, thereby the USB-DA converter unit 12a. , 12b, 12c. The
USB-DA converters 12a, 12b, 12c convert the data sent from the channel / frequency controller
11 into analog signals and transmit them to the FM modulators 13a, 13b, 13c. The FM
modulators 13a, 13b, and 13c FM-modulate the analog signal based on the frequency
information from the channel / frequency controller 11, and transmit it to the transmitter 5. The
transmitter 5 transmits the FM-modulated signal to the audio device by FM and outputs the
signal from the speaker of the audio device.
[0031]
FIG. 6 is a personal computer control flowchart including an audio related portion showing one
embodiment of the sound radio transmission system according to the present invention. First,
task control triggers for several personal computers such as audio output switching control,
volume control, music source selection / output control, etc. are input to the trigger input control
unit 20. For trigger input, the trigger input control unit 20 is provided with a control button, and
a receiver capable of receiving a wireless signal from a remote controller or an audio device is
input. Then, the trigger input control unit 20 notifies the control unit control unit of the trigger
input. The control unit control unit distinguishes the trigger for each task, and sends it along with
accompanying information to several task control units such as the audio output switching
control unit 14, the volume control unit 15, and the music source selection / output control unit
16. Some task control units such as the audio output switching control unit 14, the volume
control unit 15, and the music source selection / output control unit 16 control commands and
data for executing tasks according to each task control unit. To the endpoint 10. The audio
control unit control endpoint 10 transmits commands and data to the personal computer under
the control of the bus interface control unit 8 to control the personal computer.
[0032]
FIG. 7 is a frequency switching flowchart showing one embodiment of the sound radio
transmission system according to the present invention. First, a trigger for frequency change is
input to the trigger input control unit 20. For trigger input, a control button connected to the
trigger input control unit 20, a reception unit capable of receiving a remote control signal and
wireless data from an audio device are provided in the trigger input control unit 20, and wireless
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input is performed. Then, the trigger input control unit 20 notifies the conversion unit control
unit 17 of the trigger input. The converter control unit 17 transmits the trigger and the
accompanying information to the frequency control unit 29 of the frequency setting unit 23. The
frequency control unit 29 sets the use frequency in the frequency setting table 30 according to
the trigger and the accompanying information. The frequency selection unit 31 selects and
notifies each of the frequencies set in the frequency setting table 30 to each of the FM
modulation units 13a, 13b, and 13c. The FM modulators 13a, 13b, and 13c FM-modulate the
analog signals transmitted from the USB-DA converters 12a, 12b, and 12c to the frequency
notified by the frequency selector 31, and transmit the signals to the transmitter 5.
[0033]
FIG. 8 is a flow chart of simultaneous transmission of the same music source to a plurality of
audio devices and a flow chart of simultaneous transmission of different music sources to a
plurality of audio devices showing one embodiment of a sound radio transmission system
according to the present invention. For simultaneous transmission of the same music source,
first, music source data is sent from the PC to the music source transmission endpoint 9 through
the standard interface USB of the PC. The music source transmission endpoint 9 transfers the
music source data to the channel component division unit 24. Music source data is divided into
components as necessary. Then, the channel component division unit 24 transmits the same
music source data, which may or may not be divided into components, to the channel component
generation unit 25. The channel component generation unit 25 associates the channel
information received from the channel selection unit 28 with the music source data, and then
transmits the same data to each of the USB-DA converters 12a, 12b, and 12c.
[0034]
The USB-DA converters 12a, 12b and 12c convert the data into analog signals and transmit them
to the FM modulators 13a, 13b and 13c. The FM modulators 13a, 13b, and 13c FM-modulate the
analog signal and transmit it to the transmitter 5, and the transmitter 5 simultaneously transmits
an FM modulation signal including a music source of the same component to a plurality of audio
devices. For simultaneous transmission of different music sources, music source data is first sent
from the personal computer 1 to the music source transmission endpoint 9 from the personal
computer 1 using the standard interface USB of the personal computer. The music source
transmission endpoint 9 transmits the music source data to the channel component division unit
24. Music source data is divided into components here.
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[0035]
The channel component division unit 24 transmits the different music source data divided into
components to the channel component generation unit 25. The channel component generation
unit 25 associates the music source data with the channel information received from the channel
selection unit 28, and then transmits the channel information to the respective USB-DA
converters 12a, 12b and 12c. The USB-DA converters 12a, 12b, 12c convert the data into analog
signals, and transmit the analog signals to the FM modulators 13a, 13b, 13c. The FM modulation
units 13a, 13b, and 13c associate the frequency information received from the frequency
selection unit 31, FM modulate and transmit to the transmission unit 5, and the transmission unit
5 corresponds to each channel and frequency for a plurality of audio devices by FM. At the same
time, it sends music sources of different components simultaneously.
[0036]
Further, for simultaneous transmission of different music sources, different music sources are
sent from the personal computer 1 and the frequency information is made correspond to the
respective music sources by the FM modulators 13a, 13b and 13c, and each of the plurality of
audio devices is It is also possible to simultaneously transmit different music sources by
frequency.
[0037]
FIG. 9 is a transition diagram of different music source simultaneous transmission data to a
plurality of audio devices showing one embodiment of the sound radio transmission system
according to the present invention.
The USB data sent from the music source transmission end point 9 is divided by the channel
component division unit 24 into channel component 134, channel component 235 and channel
component 36 for outputting to L, R, M speakers. Ru. The channel component 134, the channel
component 235, and the channel component 336 are sent to the channel component generation
unit 25, where the channel 1 information 37, the channel 2 information 38, and the channel 3
information 39 received from the channel selection unit as necessary. Correspond and add.
[0038]
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The channel information added here is information for discriminating data transmission of L, R,
and M speakers, and may be a specific ID. The channel component generation unit 25 transmits
each combination data of channel information and channel component, channel 1 information 37
and channel component 134, channel 2 information 38 and channel component 235, channel 3
information 39 and channel component 36 It transmits to the DA converter units 12a, 12b and
12c. Each USB-DA converter unit 12a, 12b, 12c is a combination of channel information and
channel component, channel 1 information 37 and channel component 134, channel 2
information 38 and channel component 235, channel 3 information 39 and channel component
3 36 are converted into an analog signal 140, an analog signal 241, and an analog signal 342.
[0039]
For a system not converted to wireless, these analog signal 140, analog signal 241, and analog
signal 342 are simultaneously transmitted to each L, R, M speaker, and each speaker outputs a
music source as a lake. It is good. In this system for converting wirelessly, these respective
analog signals 140, analog signals 241 and analog signals 342 are sent to the FM modulators
13a, 13b and 13c and correspond to the frequency information received from the frequency
selector 31. And are each FM-modulated at different frequencies. The FM modulated signals, the
FM modulated signal 143, the FM modulated signal 244, and the FM modulated signal 345 are
sent to the transmitter 5 and transmitted to the L, R, and M speakers. In this case, each speaker is
set to correspond to each frequency.
[0040]
FIG. 10 is a flow chart of different frequency collective setting / changing to plural audio devices
(plural channels) showing one embodiment of the sound radio transmission system according to
the present invention. The trigger input control unit 20 notifies the conversion unit control unit
17 of the input frequency setting / change trigger. The converter control unit 17 transmits the
trigger and the accompanying information to the frequency control unit 29. The frequency
control unit 29 sets the use frequency to the frequency setting table 30, transmits a frequency
setting command to a plurality of audio devices (a plurality of channels), and enables different
frequency collective setting to a plurality of audio devices (audio device side Has a frequency
setting command receiving module. The frequency control unit 29 sets shift frequency
information in the shift register 32 of the frequency setting table 30, transmits a frequency
change command to a plurality of audio devices (a plurality of channels), and simultaneously
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changes different frequencies to a plurality of audio devices. Enable (Having a frequency change
command receiving module on the audio device side) FIG. 11 is a flow chart of different channel
collective setting to a plurality of audio devices showing one embodiment of the sound radio
transmission system according to the present invention. The frequency control unit 29 sets the
channel to be used to the channel setting table 27, transmits a channel setting command to the
audio device, and enables different channel collective setting to a plurality of audio devices
(channel setting command on the audio device side) It has a receiving module. The task control
trigger input to the trigger input control unit 20 may be input by providing a control button
connected to the trigger input control unit 20, or the remote control signal or the wireless data
from the audio device to the trigger input control unit 20 A receivable reception unit may be
provided and input may be performed wirelessly.
[0041]
As described above, according to the present invention, when it is desired to enjoy the music
source of a personal computer with high-quality audio equipment at home, a sound board for
specific interface support is not necessary, and an interface cable is provided. It is possible to
listen to the music source of the personal computer with the high-quality audio equipment
without having to lead and connect the audio equipment from the personal computer.
[0042]
Brief description of the drawings
[0043]
1 is a block diagram showing an embodiment of the sound radio transmission system of the
present invention.
[0044]
2 is a detailed block diagram of an embodiment of the sound radio transmission system of the
present invention.
[0045]
FIG. 3 is a block diagram of a channel / frequency control unit according to an embodiment of
the present invention.
[0046]
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4 is a detailed block diagram of the channel / frequency control unit of one embodiment of the
present invention.
[0047]
5 is a flowchart showing the music source radio transmission of the present invention.
[0048]
6 is a flowchart showing the control of the audio-related portion of the personal computer
according to an embodiment of the present invention.
[0049]
7 is a flowchart showing frequency switching according to an embodiment of the present
invention.
[0050]
8 is a flowchart of simultaneous transmission of the same music source to a plurality of audio
devices according to an embodiment of the present invention and a flowchart of simultaneous
transmission of different music sources to a plurality of audio devices.
[0051]
FIG. 9 is a transition diagram of different music source simultaneous transmission data to a
plurality of audio devices according to an embodiment of the present invention.
[0052]
<Figure 10> Different frequency collective setting / change flowchart to plural audio equipment
of one execution example of this invention.
[0053]
<Figure 11> Different channel collective setting flowchart to the plural audio equipment of one
execution example of this invention.
[0054]
Explanation of sign
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[0055]
DESCRIPTION OF SYMBOLS 1 ... PC 2 ... Sound radio transmission system 3 ... Interface part 4 ...
Conversion part 5 ... Transmission part 6 ... Control part 7 ... Transmission system control part 8
... Bus Interface control unit 9: music source transmission end point 10: audio control unit control
end point 11: channel / frequency control unit 12a, 12b, 12c: USB-DA converter unit 13a, 13b,
13c: FM modulation unit 14: Audio output switching control unit 15: Volume control unit 16:
Music source selection output control unit 17: Conversion unit control unit 18: Transmission unit
control unit 19 ... control unit control unit 20 ... trigger input control unit 21 ... channel
component control unit 22 ... channel setting unit 23 ... circumference Number setting unit 24
Channel component division unit 25 Channel component generation unit 26 Channel control unit
27 Channel setting table 28 Channel selection unit 29 Frequency control unit 30 Frequency
setting table 31 Frequency selection unit 32 Shift register 33 USB data 34 Channel component 1
35 Channel component 2 36 Channel component 337 Channel 1 information 38 Channel 2
information 39 Channel 3 information 40 Analog signal 1 41 Analog signal 2 42 Analog signal
343 FM signal 1 44 FM signal 2 45 · · FM signal 346 · · · FM radio wave
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