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JP2002359894

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2002359894
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
wireless microphone device, and more particularly, to a wireless microphone device which
controls from outside externally in a contactless manner.
[0002]
2. Description of the Related Art A conventional wireless microphone device 109 shown in FIG. 9
amplifies a sound signal output from a microphone 11 (sound signal input means) which
converts an acoustic signal by an acoustic wave and converts it into an electrical signal. Sound
signal amplification means 12, modulation means 13 for generating a high frequency carrier
wave signal at a desired frequency and modulating the carrier wave signal with the sound signal
outputted from the sound signal amplification means 12, and outputted from the modulation
means 13 The frequency of the carrier wave signal generated by the radio wave signal
amplification means 14 for amplifying the signal, the antenna 15 for transmitting the signal
output from the radio wave signal amplification means 14 by radio wave, and the modulation
means 13 becomes the frequency corresponding to the desired channel And a channel setting
switch 27 for presetting the radio channel. The frequency control means 16 as a radio wave of
the channel is a channel that has been previously set to a channel setting switch for sending a
control unit 18 for instructing the frequency.
[0003]
In the wireless microphone device 109 configured as described above, when changing the
channel of the transmission radio wave, the user opens the cover of the wireless microphone
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device 109 and changes the setting of the channel setting switch 27 with a cutting edge of a
flathead driver or the like. Afterward, the open cover was supposed to be closed again.
[0004]
However, in such a conventional wireless microphone device 109, when changing the channel of
the transmission radio wave, the user opens the cover of the wireless microphone device 109
and uses a cutting edge of a flathead driver or the like. After changing the setting of the channel
setting switch 27, the opened cover has to be closed again, which is inconvenient.
Also, since there is no way to easily set the channel of the transmission radio wave for each room
where the wireless microphone device 109 is used, channel setting for each room is not
performed, and erroneous use when using the wireless microphone device 109 simultaneously in
close rooms Problem of using the same channel.
[0005]
The present invention has been made to solve such a problem, and provides a wireless
microphone device and a control method thereof that can easily set information or change the
status without contact.
[0006]
SUMMARY OF THE INVENTION A wireless microphone device according to the present invention
comprises an acoustic signal input means for inputting an acoustic signal as a sound wave, and a
control signal for detecting a control signal indicating a change in setting or state of information
from the acoustic signal. It comprises a detection means and a control means for controlling the
setting of information or the change of state according to the control signal.
With this configuration, it is possible to easily set information or change the state without
contact.
[0007]
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2
Further, in the wireless microphone device of the present invention, the control means changes
the channel of the transmission radio wave in accordance with the control signal detected from
the sound signal.
With this configuration, the channel of the transmission radio wave can be easily changed
without contact.
[0008]
Further, in the wireless microphone device of the present invention, the control means changes
the sensitivity of the microphone in accordance with the control signal detected from the sound
signal. With this configuration, the sensitivity of the microphone can be easily changed without
contact.
[0009]
The wireless microphone device of the present invention has a configuration in which the control
means turns on or off the transmission radio wave in accordance with the control signal detected
from the acoustic signal. According to this configuration, it is possible to easily perform on / off
of the transmission radio wave without contact.
[0010]
The wireless microphone device of the present invention has a configuration in which the control
means mutes or unmutes the acoustic signal in accordance with the control signal detected from
the acoustic signal. According to this configuration, the mute or the mute release of the sound
signal can be easily performed without contact.
[0011]
In the wireless microphone device of the present invention, the control means changes the level
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of the transmitted radio wave in accordance with the control signal detected from the sound
signal. With this configuration, the level of the transmitted radio wave can be easily changed
without contact.
[0012]
The wireless microphone device of the present invention has a configuration in which the control
means turns on or off at least a power source used for radio wave transmission according to the
control signal detected from the acoustic signal. With this configuration, the power can be easily
turned on or off without contact.
[0013]
The wireless microphone device of the present invention has a configuration in which the control
means changes the characteristics of the acoustic signal in accordance with the control signal
detected from the acoustic signal. With this configuration, the characteristics of the acoustic
signal can be easily changed without contact.
[0014]
The wireless microphone device of the present invention has a configuration in which the control
means performs time setting of alarm notification and control of alarm notification according to
the control signal detected from the sound signal. According to this configuration, it is possible to
transmit an alarm notification sound from the wireless microphone device as a radio wave, and to
easily set the time of alarm notification without contact.
[0015]
The wireless microphone device of the present invention is provided with storage means for
storing user identification information in advance, and in accordance with the control signal
detected from the acoustic signal, the control means presets user identification information in the
storage means. When user identification information is newly detected by the control signal, the
user identification information stored in the storage means is collated with the newly detected
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user identification information. With this configuration, when the user identification information
does not match, the control by the DTMF signal is invalidated even if the DTMF signal is detected
until the DTMF signal indicating the permitted user identification information is newly detected.
As a result, it is possible to prevent the setting of information or the change of the state by
mistake.
[0016]
The wireless microphone device of the present invention is provided with storage means for
storing group identification information common to a plurality of users in advance, and the
control means stores group identification information according to the control signal detected
from the acoustic signal. When group identification information is newly detected by the control
signal, the group identification information stored in the storage unit is collated with the newly
detected group identification information. With this configuration, when the group identification
information does not match, the DTMF signal is detected and the control by the DTMF signal is
invalidated until the DTMF signal indicating the permitted group identification information is
newly detected. It will be possible to prevent erroneous setting or change of information.
[0017]
In the wireless microphone device setting method of the present invention, the control signal is
transmitted as an acoustic signal from the mobile phone to the wireless microphone device, and
the wireless microphone device performs setting or change of information according to the
control signal. have. With this configuration, it is possible to easily set information or change the
state without contact.
[0018]
The setting method of the wireless microphone device of the present invention has a
configuration in which the sound signal is a DTMF (DialTone Multi Frequency) sound. According
to this configuration, by pressing the key of the mobile phone, the setting of information or the
change of the state can be easily performed without contact.
[0019]
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The setting method of the wireless microphone device of the present invention has a
configuration in which the sound signal has a scale. According to this configuration, it is possible
to change the setting or the state of the information without giving much stress to the third party
by playing the melody having the scale.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to the drawings.
[0021]
First Embodiment FIG. 1 is a block diagram showing a first embodiment of a wireless microphone
device according to the present invention.
As shown in FIG. 1, the wireless microphone device 101 according to the present embodiment
amplifies a sound signal output from the microphone 11 (sound signal input means), which
inputs an sound signal as a sound wave and converts the sound signal into an electric signal.
Sound signal amplification means 12, modulation means 13 for generating a high frequency
carrier wave signal at a desired frequency and modulating the carrier wave signal with the sound
signal outputted from the sound signal amplification means 12, and outputted from the
modulation means 13 The frequency of the carrier wave signal generated by the radio wave
signal amplification means 14 for amplifying the signal, the antenna 15 for transmitting the
signal output from the radio wave signal amplification means 14 by radio wave, and the
modulation means 13 becomes the frequency corresponding to the desired channel Control
contents from the sound signal output from the frequency control means 16 for controlling the
sound signal and the sound signal amplification means 12 Control signal detecting means 17 for
detecting a control signal, control means 18 for performing channel switching control by
instructing frequency control means 16 in accordance with the control signal detected by control
signal detecting means 17, channel of radio wave The storage unit 19 stores the correspondence
with the frequency of the radio wave, and the clock unit 20 counts the time after the main power
supply (not shown) of the wireless microphone device 101 is turned on.
[0022]
In this embodiment, the modulation unit 13 is a VCO (Voltage Control Oscillator) circuit, the
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frequency control unit 16 is a PLL (Phase Locked Loop) circuit, and the control signal detection
unit 17 is a DTMF (Dial Tone) as a control signal from an acoustic signal. The control means 18
uses a CPU (microcomputer), and the storage means 19 uses a non-volatile memory.
[0023]
The operation of the wireless microphone device 101 of the present embodiment configured as
described above will be described.
For example, an operation device (not shown) for generating DTMF sound is placed in a
classroom, and when the operation device is operated by a lecturer, DTMF sound corresponding
to the channel of the radio wave transmitted from the wireless microphone device 101 is
generated. In the wireless microphone device 101, the microphone 11 inputs, together with the
ambient sound, the DTMF sound from the operating device as an audio signal, and the audio
signal amplifying means 12 amplifies and controls the audio signal in which the ambient sound
and the DTMF sound are mixed. The signal detection means 17 detects the DTMF sound from the
acoustic signal mixed with the ambient sound and the DTMF sound, and the control means 18
switches the channel of the radio wave to the channel corresponding to the detected DTMF
sound. Specifically, the control unit 18 refers to the storage unit 19 in which the correspondence
between the channel of the transmission radio wave and the frequency of the transmission radio
wave is stored in advance, and acquires and acquires the frequency corresponding to the
detected DTMF sound. The frequency is set to the frequency control means 16. The frequency
control means 16 controls the modulation means 13 so that a carrier signal of the frequency set
by the control means 18 is generated. Thereafter, the modulation means 13 modulates the
carrier wave signal with the acoustic signal outputted from the acoustic signal amplification
means 12, the radio wave signal amplification means 14 amplifies the modulated signal, and the
antenna 15 has a channel corresponding to the DTMF sound. Send radio waves at a frequency of
[0024]
Further, the time counting means 20 counts the time from the main power supply ON, and the
control means 18 prohibits the channel switching control when a predetermined time has
elapsed. Specifically, the control means 18 validates the DTMF signal received within a
predetermined time from the main power ON, and invalidates the DTMF signal received after the
predetermined time elapses from the main power ON. There is.
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[0025]
As described above, the wireless microphone device 101 according to the present embodiment
receives DTMF sound indicating the channel of the transmission radio wave as sound signal as
sound signal together with ambient sound, and detects DTMF sound indicating the transmission
radio channel from the input acoustic signal And since the channel of the transmission radio
wave is changed according to the detected DTMF sound, the channel can be easily made
contactless without performing the operation such as opening the cover of the wireless
microphone device and setting the channel. It can be changed.
[0026]
Also, since the wireless microphone device 101 according to the present embodiment does not
switch the channel when a predetermined time has elapsed since the main power was turned on,
the channel erroneously occurs due to an ambient sound after the effective period has elapsed.
Can be prevented from switching.
[0027]
In the present embodiment, the operating device for generating DTMF sound may use, for
example, a device equipped with only one switch for easy operation, but a portable phone
capable of generating DTMF sound corresponding to the pressed key. A telephone may be used.
For example, when the '1' key of the mobile phone is pressed, the mobile phone generates a
DTMF tone corresponding to the '1' key, and the wireless microphone device 101 sets the
channel to '1' according to the DTMF tone. May be
[0028]
Further, although the control signal detection means 17 detects a DTMF signal as a control
signal, the present invention is not limited to this, and the control signal is an acoustic signal
having a scale, and the control signal detection means 17 However, it may be configured to
detect the transition of the scale from the acoustic signal including the ambient sound.
According to such a wireless microphone device, for example, information can be set or changed
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in the wireless microphone device by playing a melody having a scale, and information can be
given without much stress on the third party. You can change the setting or status of
[0029]
Second Embodiment FIG. 2 is a block diagram showing a second embodiment of a wireless
microphone device according to the present invention. Unlike the wireless microphone device
101 of the first embodiment, in the wireless microphone device 102 of the present embodiment,
the control signal detection unit 17 detects a DTMF signal indicating the input sensitivity of the
sound signal from the input sound signal, and controls 18. On the basis of the DTMF signal
detected by the control signal detecting means 17, the input sensitivity of the acoustic signal is
changed. Specifically, the control unit 18 instructs the sound signal amplification unit 12 to
correspond to the value indicated by the DTMF signal, by using the volume coefficient value
integrated with the sound signal input by the microphone 11 to the sound signal amplification
unit 12. Adjust the level of the sound signal output from The other configuration requirements
are the same as those of the wireless microphone device 101 of the first embodiment, and the
description will be omitted.
[0030]
As described above, the wireless microphone device 102 according to the present embodiment
inputs DTMF sound indicating the input sensitivity of the acoustic signal as sound signal together
with the ambient sound as the acoustic signal, and DTMF sound indicating the input sensitivity of
the acoustic signal from the input acoustic signal Since the input sensitivity of the audio signal is
changed according to the detected DTMF sound, the cover of the wireless microphone device is
opened and the input sensitivity of the audio signal is set without performing troublesome
operations. The input sensitivity of the acoustic signal can be easily changed without contact.
[0031]
Third Embodiment FIG. 3 is a block diagram showing a third embodiment of the wireless
microphone device according to the present invention.
Unlike the wireless microphone device 101 of the first embodiment, in the wireless microphone
device 103 of the present embodiment, the control signal detection unit 17 detects a DTMF
signal indicating ON or OFF of the transmission radio wave from the input acoustic signal, and
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controls In accordance with the DTMF signal detected by the control signal detection means 17,
the radio signal 18 is turned on or off. Specifically, the control means 18 instructs the radio wave
signal amplification means 14 according to the DTMF signal whether or not the signal amplified
by the radio wave signal amplification means 14 is to be output to the antenna 15, and the radio
wave signal amplification means 14 It is switched whether to output the amplified signal to the
antenna 15 or not.
[0032]
As described above, the wireless microphone device 103 according to the present embodiment
receives DTMF sound indicating on or off of the transmission radio wave as sound signal as
sound signal together with ambient sound, and indicates on or off transmission radio wave from
the input acoustic signal. Since the DTMF sound is detected and the transmission radio wave is
turned on or off according to the detected DTMF sound, the transmission radio wave can be
easily turned on or off without contact.
[0033]
Fourth Embodiment FIG. 4 is a block diagram showing a fourth embodiment of the wireless
microphone device according to the present invention.
In the wireless microphone device 104 of this embodiment, unlike the wireless microphone
device 101 of the first embodiment, the control signal detection unit 17 detects a DTMF signal
indicating whether to mute the audio signal from the input audio signal, Based on the DTMF
signal detected by the control signal detection unit 17, the control unit 18 switches whether to
mute the sound signal. Specifically, the control means 18 instructs the sound signal muting
means 21 according to the DTMF signal whether to mute the sound signal inputted by the
microphone 11, and the sound signal muting means 21 inputs the sound by the microphone 11
Toggle whether to mute the signal. The other configuration requirements are the same as those
of the wireless microphone device 101 of the first embodiment, and the description will be
omitted.
[0034]
As described above, the wireless microphone device 104 according to the present embodiment
inputs DTMF sound indicating mute or mute release of the acoustic signal as acoustic signal
together with ambient sound as acoustic signal, and mutes or cancels mute of the acoustic signal
from the input acoustic signal. Since the DTMF sound indicating “t” is detected and the sound
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signal is muted or unmuted according to the detected DTMF sound, the sound signal can be
easily muted or unmuted without contact.
[0035]
Fifth Embodiment FIG. 5 is a block diagram showing a fifth embodiment of the wireless
microphone device according to the present invention.
Unlike the wireless microphone device 101 of the first embodiment, in the wireless microphone
device 105 of the present embodiment, the control signal detection unit 17 detects a DTMF
signal indicating the level of the transmitted radio wave from the input acoustic signal, and the
control unit 18 On the basis of the DTMF signal detected by the control signal detection means
17, the level of the transmitted radio wave is changed. Specifically, the control means 18 is sent
out from the antenna 15 by instructing the radio wave signal amplification means 14 to make the
coefficient value integrated with the signal output from the modulation means 13 be the value
indicated by the DTMF signal. Adjust the level of the transmitted radio wave. The other
configuration requirements are the same as those of the wireless microphone device 101 of the
first embodiment, and the description will be omitted.
[0036]
As described above, the wireless microphone device 105 according to the present embodiment
receives DTMF sound indicating the level of the transmitted radio wave as a sound signal as a
sound signal together with the ambient sound, and detects DTMF sound indicating the level of
the transmitted radio wave from the input acoustic signal. Since the level of the transmission
radio wave is changed according to the detected DTMF sound, transmission is performed without
contact, without the need to open the cover of the wireless microphone device and set the level
of the transmission radio wave. It is possible to easily change the level of radio waves.
[0037]
Sixth Embodiment FIG. 6 is a block diagram showing a sixth embodiment of the wireless
microphone device according to the present invention.
The wireless microphone device 106 of this embodiment differs from the wireless microphone
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device 101 of the first embodiment in that the control signal detection unit 17 detects a DTMF
signal indicating power on or off from the input acoustic signal, and controls 18 On the basis of
the DTMF signal detected by the control signal detection means 17, the main power supply 22 is
turned on or off. Specifically, the control means 18 instructs the main power supply 22 to turn
on or off the power according to the DTMF signal, and the main power supply 22 turns off the
power supplied to the modulation means 13 or the radio wave signal amplification means 14 or
the like. The other configuration requirements are the same as those of the wireless microphone
device 101 of the first embodiment, and the description will be omitted.
[0038]
As described above, the wireless microphone device 106 according to the present embodiment
receives DTMF sound indicating turning on or off of the power used for radio wave transmission
and the like as acoustic signals together with ambient sound as sound signals, and turns on or off
Since the DTMF tone indicating the off is detected and the power is turned on or off according to
the detected DTMF tone, the power can be easily switched on or off contactlessly.
[0039]
Seventh Embodiment FIG. 7 is a block diagram showing a seventh embodiment of the wireless
microphone device according to the present invention.
The wireless microphone device 107 of this embodiment differs from the wireless microphone
device 101 of the first embodiment in that the control signal detection unit 17 detects a DTMF
signal indicating the characteristics of the acoustic signal, and the control unit 18 controls the
control signal detection unit. According to the control signal detected by 17, the characteristic of
the acoustic signal is changed. Specifically, the control means 18 instructs the sound signal
amplification means 12 according to the DTMF signal to the property of the sound signal, and
the sound signal amplification means 12 changes the property of the sound signal input by the
microphone 11. Here, the change of the characteristic of the sound signal is, for example,
switching of speech characteristic control or vocal characteristic control, switching of Hi cut filter
control or Low cut filter control. The other configuration requirements are the same as those of
the wireless microphone device 101 of the first embodiment, and the description will be omitted.
[0040]
As described above, the wireless microphone device 107 according to the present embodiment
receives DTMF sound indicating the characteristics of the acoustic signal as a sound signal
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together with the ambient sound as a sound signal and detects DTMF sound indicating the
characteristics of the sound signal from the input sound signal. Since the characteristic of the
acoustic signal is changed according to the detected DTMF sound, the characteristic of the
acoustic signal can be easily changed without contact.
[0041]
Eighth Embodiment FIG. 8 is a block diagram showing an eighth embodiment of the wireless
microphone device according to the present invention.
The wireless microphone device 108 of this embodiment differs from the wireless microphone
device 101 of the first embodiment in that the control signal detection unit 17 detects a DTMF
signal indicating the time of alarm notification, and the control unit 18 controls the control signal
detection unit. According to the DTMF signal detected by 17, the time setting of the alarm
notification and the control of the alarm notification are performed. Specifically, the control
means 18 sets the alarm notification time in the storage means 19 in accordance with the DTMF
signal, the clock means 20 measures the time, and the time measured by the clock means 20 is
set in the memory means 19 When the time has come, the control means 18 inputs an alarm
sound signal to the acoustic signal amplification means 12. The other configuration requirements
are the same as those of the wireless microphone device 101 of the first embodiment, and the
description will be omitted.
[0042]
As described above, the wireless microphone device 108 according to the present embodiment
receives DTMF sound indicating the time of alarm notification as a sound signal as sound signal
together with ambient sound and detects DTMF sound indicating the time of alarm notification
from the input sound signal. Since the time setting of the alarm notification and the control of the
alarm notification are performed according to the detected DTMF sound, the wireless
microphone device can be made to perform alarm notification control in a noncontact manner.
[0043]
In the first to eighth embodiments described above, the control signal detection means 17 is a
DTMF signal indicating either or both of the user ID (user identification information) and the
group ID (group identification information). Is detected, and the control means 18 collates the
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user according to the DTMF signal detected by the control signal detection means 17 and sets
the information and changes the state only when the user is a permitted user. You may
Specifically, an ID to be permitted is set in the storage unit 19 by DTMF tone indicating an ID in
advance, and when an ID is newly detected by the DTMF signal, the control unit 18 determines
the ID stored in the storage unit 19 and The newly detected ID is compared, and only when
matched, control by the DTMF signal (setting of information or change of state) is validated. If
the IDs do not match, the control is invalidated by the DTMF signal even if the DTMF signal is
detected until the DTMF signal indicating the newly granted ID is detected. As described above,
when the IDs do not match, the control is invalidated by the DTMF signal even if the DTMF signal
is detected until the DTMF signal indicating the newly permitted ID is detected. It is possible to
prevent making a change.
[0044]
Further, the acoustic signal and the control signal are not limited to the audible sound (about 20
Hz to about 20 kHz) signals, and may be signals of ultra low frequency sound (about 20 Hz or
less) or ultrasonic waves (about 20 kHz or more) .
[0045]
According to the present invention, it is possible to provide a wireless microphone device and a
control method thereof, which has the excellent effect that information setting or status change
can be easily performed without contact.
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