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DESCRIPTION JP2017092906

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DESCRIPTION JP2017092906
Abstract: To provide a bone conduction communication device in which howling does not easily
occur. A bone conduction communication device includes a transmitting unit that converts bone
vibration into an electrical signal and outputs the same, a receiving unit that outputs a vibration
based on the received electrical signal, and one of the transmitting unit and the receiving unit. A
first state in which the other output function of the transmitter and the receiver is invalid, and
the output function of one of the transmitter and the receiver is ineffective; And a control unit
that switches between the second state in which the other output function of the receiving unit is
valid. [Selected figure] Figure 2
Bone conduction communication machine
[0001]
The present invention relates to a bone conduction communication device using bone
conduction.
[0002]
There is known a bone conduction communication device capable of bi-directional
communication using bone conduction.
The bone conduction communication device of Patent Document 1 which is an example thereof
converts a vibration of a bone conduction speaker that outputs a sound transmitted to the
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auditory organ as a bone conduction sound and a vocal cord collected as a bone conduction
sound into an electric signal. Including a bone conduction microphone that outputs the The
sound output from the bone conduction speaker and the sound collected by the bone conduction
microphone are less susceptible to external noise. Therefore, according to the communication
using the bone conduction communication device, clear voice can be obtained.
[0003]
Japanese Patent Application Laid-Open No. 11-215581
[0004]
Howling may occur during communication using the bone conduction communication device,
which may cause the user to feel uncomfortable.
However, Patent Document 1 does not particularly consider howling that occurs during
communication. Therefore, there is room for improvement in terms of enabling comfortable
communication.
[0005]
An object of the present invention is to provide a bone conduction communication device in
which howling does not easily occur.
[0006]
[1] One embodiment of a bone conduction communication device according to the present
invention includes a transmitter configured to convert bone vibration into an electrical signal and
output the same, a receiver configured to output vibration based on the received electrical signal,
the transmitter, and A first state in which one output function of the reception unit is valid and
the other output function of the transmission unit and the reception unit is invalid, and one
output function of the transmission unit and the reception unit is invalid And a control unit that
switches between the second state in which the other output function of the transmission unit
and the reception unit is valid.
[0007]
[2] According to an example of the bone conduction communication device, the bone conduction
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communication device further includes a vibration detection unit that detects a vibration of a
bone, and the control unit determines the first state and the first state based on a detection result
of the vibration detection unit. Switch to the second state.
[0008]
[3] According to an example of the bone conduction communication device, the controller detects
the vibration in the first state in which the output function of the receiver is valid and the output
function of the transmitter is invalid. The state of the transmission unit and the reception unit is
switched from the first state to the second state based on the detection of vibration by the unit.
[0009]
[4] According to an example of the bone conduction communication device, the control unit
detects the vibration in the second state in which the output function of the transmission unit is
valid and the output function of the reception unit is invalid. The unit switches the state of the
transmitting unit and the receiving unit from the second state to the first state based on the fact
that no vibration is detected by the unit and an electric signal is input to the receiving unit.
[0010]
[5] According to an example of the bone conduction communication device, the bone conduction
communication device further includes a storage unit for storing the electric signal received by
the receiving unit, and the control unit is effective in the output function of the transmitting unit.
In the second state in which the output function of the unit is invalid, the storage unit stores the
electric signal received by the receiving unit, and the state of the transmitting unit and the
receiving unit is changed to the receiving unit from the second state. After switching to the first
state in which the output function of the transmission unit is effective and the output function of
the transmission unit is ineffective, vibration is output to the reception unit based on the
electrical signal stored in the storage unit.
[0011]
[6] One embodiment of a bone conduction communication device according to the present
invention comprises a transmitting unit for converting bone vibration into an electrical signal and
outputting it, a receiving unit for outputting vibration based on the received electrical signal, the
transmitting unit, Control of the transmission unit, control of the reception unit, and transmission
such that in the third state in which both output functions of the reception unit are effective, the
occurrence of resonance in the transmission unit and the reception unit is suppressed. And a
control unit that executes a resonance suppression process including at least one of filtering of
the electric signal output from the unit and filtering of the electric signal received by the
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receiving unit.
[0012]
[7] According to an example of the bone conduction communication device, the control unit
limits the magnitude of the vibration output from the receiving unit in the resonance suppression
process.
[8] According to an example of the bone conduction communication device, the control unit
controls the vibration output from the receiving unit so that a frequency component having an
amplitude equal to or greater than a predetermined amplitude is not included in the resonance
suppression processing. Restrict.
[0013]
[9] According to an example of the bone conduction communication device, the bone conduction
communication device further includes a storage unit that stores the electric signal received by
the receiving unit, and the control unit causes the transmission unit to transmit the electric signal
in the resonance suppression process. The electric signal received by the receiving unit during
the output is stored in the storage unit, and the receiving unit is based on the electric signal
stored in the storage unit after the output of the vibration by the transmitting unit is ended.
Output vibration.
[0014]
[10] According to an example of the bone conduction communication device, in the control unit,
one output function of the transmission unit and the reception unit is valid, and the other output
function of the transmission unit and the reception unit is invalid The first state and the third
state can be switched.
[0015]
[11] According to an example of the bone conduction communication device, the bone
conduction communication device further includes a vibration detection unit that detects a
vibration of a bone, and the control unit determines the first state and the first state based on
detection results of the vibration detection unit Switch to the third state.
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[0016]
[12] According to an example of the bone conduction communication device, the controller
detects the vibration in the first state in which the output function of the receiver is valid and the
output function of the transmitter is invalid. The state of the transmission unit and the reception
unit is switched from the first state to the third state based on the detection of vibration by the
unit.
[0017]
[13] According to an example of the bone conduction communication device, the control unit
detects the vibration in the first state in which the output function of the transmission unit is
valid and the output function of the reception unit is invalid. The unit switches the state of the
transmission unit and the reception unit from the first state to the third state based on the fact
that no vibration is detected by the unit and an electric signal is input to the reception unit.
[0018]
[14] According to an example of the bone conduction communication device, an attachment
portion for attaching at least one of the transmission unit and the reception unit to a user's body,
a user's clothes, a user's accessories or a bicycle Further comprising
[0019]
[15] According to an example of the bone conduction communication device, the control unit
further includes an operation unit, and the control unit controls the transmission unit and the
reception unit based on an operation of the operation unit.
[16] According to an example of the bone conduction communication device, the bone
conduction communication device further includes a main body including the transmitting unit
and the receiving unit, and the operation unit is configured separately from the main body.
[0020]
[17] According to an example of the bone conduction communication device, the operation unit
includes a mounting portion for attaching to a user's body, a user's clothes, a user's accessories
or a bicycle.
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[18] According to an example of the bone conduction communication device, the control unit is
configured to transmit the transmitting unit and the receiving unit based on at least one of a
traveling state of a bicycle, a traveling environment of the bicycle, and a state of a user. Control
at least one of the
[0021]
[19] According to an example of the bone conduction communication device, the traveling state
of the bicycle includes at least one of a vehicle speed, a vibration, and a manual driving force of
the bicycle.
[20] According to an example of the bone conduction communication device, a traveling
environment of the bicycle includes at least one of a road surface slope, a road surface altitude,
wind power, weather, and a noise level.
[0022]
[21] According to one example of the bone conduction communication device, the condition of
the user includes at least one of a heart beat and a consumed calorie.
[22] According to an example of the bone conduction communication device, the control unit can
communicate with an external device.
[0023]
[23] According to an example of the bone conduction communication device, the control unit sets
the state of at least one of the transmission unit and the reception unit based on a signal received
from the external device.
[24] According to an example of the bone conduction communication device, the control unit sets
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an output level of at least one of the transmission unit and the reception unit based on a signal
received from the external device.
[0024]
[25] According to one example of the bone conduction communication device, the external device
includes a mounting portion for mounting on a bicycle.
[0025]
According to the bone conduction communication device, howling does not easily occur.
[0026]
The side view which shows an example of use condition of the bone conduction communication
apparatus of 1st Embodiment.
FIG. 2 is a block diagram of the bone conduction communication device of FIG. 1;
The block diagram of the bone conduction communication apparatus of 2nd Embodiment.
The block diagram of the bone conduction communication apparatus of 3rd Embodiment.
The block diagram of the bone conduction communication apparatus of 4th Embodiment.
The block diagram of the bone conduction communication apparatus of a modification.
The block diagram of the bone conduction communication apparatus of a modification.
[0027]
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(First Embodiment) FIG. 1 shows an example of a usage state of the bone conduction
communication device 10 which can be attached to the side of the face of the user H. As shown
in FIG.
An example of the form of the bone conduction communication device 10 is a headset.
[0028]
The bone conduction communication device 10 includes a transmission unit 12, a reception unit
14, and a control unit 16.
In one example, the bone conduction communication device 10 further includes a main body 18,
a power supply unit 20 (see FIG. 2), and an operation unit 22 (see FIG. 2).
The transmission unit 12, the reception unit 14, and the control unit 16 are included in the main
body 18. The power supply unit 20 includes a rechargeable battery. The power supply unit 20 is
electrically connected to the transmission unit 12, the reception unit 14, and the control unit 16.
The operation unit 22 is a controller that can be worn on the clothes or the like of the user H.
The main body 18 and the operation unit 22 are individually configured. The bone conduction
communication device 10 may have a form not including the main body 18. Also in this
embodiment, the bone conduction communication device 10 includes the transmission unit 12,
the reception unit 14, and the control unit 16.
[0029]
The function of the transmission unit 12 is to convert bone vibration into an electrical signal and
output it. The function of the receiving unit 14 is to output a vibration based on the received
electrical signal. The transmitter 12 and the receiver 14 are electrically connected to the
controller 16.
[0030]
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The main body 18 further includes a connection portion 24 and an attachment portion 26. An
example of the form of the attachment portion 26 is a hook that can be hooked to the ear. The
attachment portion 26 extends from, for example, the receiving portion 14. The transmitter 12
and the receiver 14 are attached to the body of the user H by the attachment 26 being hooked to
the ear. The transmission unit 12 is attached to a cheek, for example. The receiver 14 is inserted
into, for example, a hole in the ear. An example of the form of the connecting unit 24 is a frame
connecting the transmitting unit 12 and the receiving unit 14.
[0031]
The control unit 16 is provided inside the main body 18. An example of the inside of the main
body 18 is the inside of the mounting portion 26. The function of the control unit 16 is to control
various elements constituting the bone conduction communication device 10. The control unit 16
controls the transmission unit 12 and the reception unit 14 based on the operation of the
operation unit 22.
[0032]
The operation unit 22 includes a wireless communication unit (not shown) and an attachment
unit 28 (see FIG. 2). The wireless communication unit wirelessly communicates with the main
body 18. An example of the form of the attachment portion 28 is a hook that can be attached to
the clothes (not shown) of the user H. The operation unit 22 includes a plurality of functions. In
one example, the plurality of functions include a first function and a second function. The first
function is a function to adjust the sound pressure, the volume, etc. of the sound transmitted to
the user H. The second function is a function of switching the states of the transmission unit 12
and the reception unit 14. In addition, the operation part 22 can take a form which does not
include the attaching part 28.
[0033]
FIG. 2 is a block diagram of the main elements that make up the bone conduction communication
device 10. The bone conduction communication device 10 further includes a vibration detection
unit 30. In one example, the vibration detection unit 30 is included in the transmission unit 12.
The bone conduction communication device 10 may take a form in which the vibration detection
unit 30 is not included in the transmission unit 12.
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[0034]
The transmission unit 12 includes a vibration detection unit 30, a first amplifier 32, and a
transmitter. The vibration detection unit 30 includes a vibration sensor capable of detecting the
vibration of the bone accompanying the vocalization, converting the detected vibration into an
electric signal and outputting the electric signal. The vibration detection unit 30 outputs an
electrical signal in which the detection result is reflected to the first amplifier 32 and the control
unit 16. The function of the first amplifier 32 is to amplify the electrical signal received from the
vibration detection unit 30. The function of the transmitter 34 is to output the electrical signal
amplified by the first amplifier 32 to an external communication device (not shown). The external
communication device is a communication device different from the bone conduction
communication device 10, and can communicate using bone vibration or air vibration.
[0035]
The receiving unit 14 includes a receiver 36, a second amplifier 38, and a vibrator 40. The
function of the receiver 36 is to receive an electrical signal output from an external
communication device. The receiver 36 outputs the received electrical signal to the second
amplifier 38 and the control unit 16. The function of the second amplifier 38 is to amplify the
electrical signal received from the receiver 36. The function of the vibrator 40 is to vibrate based
on the electrical signal amplified by the second amplifier 38.
[0036]
The control unit 16 includes a switch control unit 42, an amplifier control unit 44, a first switch
46, and a second switch 48. The function of the switch control unit 42 is to control the switches
46 and 48 so that the states of the transmission unit 12 and the reception unit 14 can be
switched. The function of the amplifier control unit 44 is to adjust the gain of the first amplifier
32 and the gain of the second amplifier 38. The function of the first switch 46 is to switch the
connection between the first amplifier 32 and the transmitter 34. The function of the second
switch 48 is to switch the connection between the second amplifier 38 and the vibrator 40.
[0037]
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The amplifier control unit 44 adjusts the gain of the first amplifier 32 by adjusting at least one of
the current and the voltage output to the first amplifier 32, and the current and voltage output to
the second amplifier 38. The gain of the second amplifier 38 is adjusted by adjusting at least one
of the two. The magnitude of the vibration of the vibrator 40 is adjusted in accordance with at
least one of the current and the voltage output to the second amplifier 38. The sound pressure,
the volume, and the like of the sound transmitted to the user H are adjusted according to the
magnitude of the vibration of the vibrator 40.
[0038]
The states of the transmitter 12 and the receiver 14 include a first state and a second state. In
the first state, one output function of the transmitter 12 and the receiver 14 is valid, and the
other output function of the transmitter 12 and the receiver 14 is invalid. In the second state, one
output function of the transmission unit 12 and the reception unit 14 is invalid, and the other
output function of the transmission unit 12 and the reception unit 14 is effective. In one
example, in the first state, the output function of the receiver 14 is valid, and the output function
of the transmitter 12 is invalid. In the second state, the output function of the receiver 14 is
invalid, and the output function of the transmitter 12 is effective. The state of the transmission
unit 12 and the reception unit 14 shown in FIG. 2 is the first state.
[0039]
The switch control unit 42 switches between the first state and the second state based on the
detection result of the vibration detection unit 30 or the operation of the operation unit 22. In
one example, the switch control unit 42 switches the state of the transmission unit 12 and the
reception unit 14 from the first state to the second state based on the fact that the vibration is
detected by the vibration detection unit 30 in the first state. Control each switch 46, 48 so that In
the second state, the switch control unit 42 detects that no vibration is detected by the vibration
detection unit 30 and the state of the transmission unit 12 and the reception unit 14 is changed
based on the fact that an electrical signal is input to the receiver 36. The switches 46 and 48 are
controlled so as to be switched from the 2 state to the first state.
[0040]
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The output function of the transmitting unit 12 is effective when the first amplifier 32 and the
transmitter 34 are connected, and is invalid when the first amplifier 32 and the transmitter 34
are not connected. When the state of the first switch 46 is on, the first amplifier 32 and the
transmitter 34 are connected via the first switch 46, and the output function of the transmitter
12 is enabled. When the state of the first switch 46 is off, the first amplifier 32 and the
transmitter 34 are not connected, and a state in which the output function of the transmission
unit 12 is invalid is formed. When the output function of the transmitter 12 is effective, an
electrical signal related to the vibration detected by the vibration detector 30 is output to the
transmitter 34, and the electrical signal is output from the transmitter 34 to an external
communication device. When the output function of the transmission unit 12 is invalid, the
electrical signal related to the vibration detected by the vibration detection unit 30 is not output
to the transmitter 34.
[0041]
The output function of the reception unit 14 is effective when the second amplifier 38 and the
vibrator 40 are connected, and is invalid when the second amplifier 38 and the vibrator 40 are
not connected. When the state of the second switch 48 is on, the second amplifier 38 and the
vibrator 40 are connected via the second switch 48, and a state in which the output function of
the receiving unit 14 is valid is formed. When the state of the second switch 48 is off, the second
amplifier 38 and the vibrator 40 are not connected, and a state in which the output function of
the receiving unit 14 is invalid is formed. When the output function of the receiving unit 14 is
effective, the electrical signal received by the receiving unit 14 is output to the vibrator 40, and
the vibrator 40 vibrates based on the electrical signal. When the output function of the receiving
unit 14 is invalid, the electrical signal received by the receiving unit is not output to the vibrator
40.
[0042]
When the user H and the communication partner shown in FIG. 1 communicate with each other,
the bone conduction communication device 10 operates as follows. The transmission unit 12, the
reception unit 14, the control unit 16, and the like are driven by setting the state of the power
supply unit 20 to ON.
[0043]
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The communication device of the communication partner detects, for example, the vibration of
the bone caused by the utterance of the communication partner, and outputs an electrical signal
in which the detection result is reflected to the bone conduction communication device 10. When
the receiver 36 receives an electric signal from the communication device at the other end of the
communication when the state of the transmitter 12 and the receiver 14 is set to the first state,
the receiver 36 vibrators the received electric signal. Output to 40. The vibrator 40 vibrates
based on the electrical signal received from the receiver 36. The vibration of the vibrator 40 is
transmitted to the auditory organ via the bone of the user H, and the voice of the communication
partner is transmitted to the user H. In the first state, when the receiver 36 does not receive an
electric signal from the communication device of the communication partner and the vibration
detection unit 30 detects a vibration caused by the user's voice, the switch control unit 42 12
and the state of the receiving unit 14 are switched from the first state to the second state.
[0044]
When the vibration detection unit 30 detects the vibration of the bone caused by the user H's
speech when the transmission unit 12 and the reception unit 14 are set to the second state, the
vibration detection unit 30 detects The reflected electrical signal is output to the transmitter 34.
The transmitter 34 outputs the received electrical signal to the communication device of the
communication partner. The communication device at the other end of the communication
outputs the vibration based on the received electric signal. Thereby, the voice of the user H is
transmitted to the communication partner. In the second state, when the vibration is not detected
by the vibration detection unit 30 and the receiver 36 receives the electric signal output from the
communication device of the communication partner, the switch control unit 42 transmits the
transmission unit 12 and the reception unit 14. Switches from the second state to the first state.
[0045]
The vibration of the bone accompanied by the utterance of the user H and the vibration
transmitted from the vibrator 40 to the bone of the user H are less susceptible to the external
noise. Therefore, according to the bone conduction communication device 10, clear voice
communication is possible.
[0046]
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Further, even if the user H utters while receiving an electrical signal from the communication
device of the other party in the first state, the electrical signal corresponding to the utterance is
not output to the transmitter 34. Therefore, the occurrence of resonance in the transmission unit
12 and the reception unit 14 is suppressed, and howling does not easily occur.
[0047]
Further, even if the receiver 36 receives an electrical signal from the communication device at
the other end of the communication while the user H is speaking in the second state, the
electrical signal is not output to the vibrator 40. Therefore, the occurrence of resonance in the
transmission unit 12 and the reception unit 14 is suppressed, and howling does not easily occur.
[0048]
According to the first embodiment, the following effects can be obtained. (1) According to the
bone conduction communication device 10, the state of the transmission unit 12 and the
reception unit 14 is switched from the first state to the second state based on the detection of the
vibration by the vibration detection unit 30. For this reason, the voice of the user H is smoothly
transmitted to the communication partner.
[0049]
(2) According to the bone conduction communication device 10, based on the fact that the
vibration is not detected by the vibration detection unit 30 and the electric signal is input to the
receiver 36, the states of the transmission unit 12 and the reception unit 14 are The second state
is switched to the first state. Therefore, when the user H does not speak, the utterance of the
communication partner is smoothly transmitted to the user H.
[0050]
(3) According to the bone conduction communication device 10, the main body 18 and the
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operation unit 22 are individually configured. According to this configuration, since the main
body 18 is reduced in weight, the possibility that the user H may feel discomfort due to wearing
on the face is reduced.
[0051]
Second Embodiment The bone conduction communication device 10 according to the second
embodiment differs from the bone conduction communication device 10 according to the first
embodiment in the points described below, and in the other points in the first embodiment. The
bone conduction communication device 10 has substantially the same configuration as that of
the bone conduction communication device 10. In the description of the bone conduction
communication device 10 of the second embodiment, the same reference numerals as in the
bone conduction communication device 10 of the first embodiment denote the same parts, and a
part or all of the description of the structure will be described. I omit it.
[0052]
The states of the transmitter 12 and the receiver 14 include a third state. In the third state, the
output functions of both the transmitter 12 and the receiver 14 are valid. The switch control unit
42 controls the switches 46 and 48 so that, for example, the states of the transmission unit 12
and the reception unit 14 maintain the third state. The control unit 16 may take a form not
including at least one of the switch control unit 42, the first switch 46, and the second switch 48.
[0053]
The control unit 16 executes the resonance suppression process so that the occurrence of
resonance in the transmission unit 12 and the reception unit 14 is suppressed in the third state.
The resonance suppression processing includes, for example, control of the transmission unit 12,
control of the reception unit 14, filter processing of the electrical signal output from the
transmission unit 12, and filter processing of the electrical signal received by the reception unit
14. The control unit 16 is one of the control of the transmission unit 12, the control of the
reception unit 14, the filter processing of the electric signal output from the transmission unit
12, and the filter processing of the electric signal received by the reception unit 14. It is possible
to take the form of performing the resonance suppression process omitting two, three or three.
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[0054]
FIG. 3 is a block diagram of the main elements that make up the bone conduction communication
device 10. Control unit 16 further includes a first filter 50 and a second filter 52. An example of
the first filter 50 is an active filter. The function of the first filter 50 is to execute, as resonance
suppression processing, filtering processing of the electrical signal output from the transmission
unit 12 so as not to include frequency components having an amplitude greater than or equal to
a predetermined amplitude. The first filter 50 is provided, for example, between the first
amplifier 32 and the first switch 46. For this reason, the electric signal in which the detection
result of the vibration detection unit 30 is reflected is input to the first filter 50 via the first
amplifier 32, and the electric signal filtered as it passes through the first filter 50. Is output to the
transmitter 34 via the first switch 46.
[0055]
An example of the second filter 52 is an active filter. The function of the second filter 52 is to
execute, as resonance suppression processing, filtering processing of the electrical signal output
from the receiving unit 14 so as not to include frequency components having an amplitude
greater than or equal to a predetermined amplitude. The second filter 52 is provided, for
example, between the second amplifier 38 and the second switch 48. Therefore, the electrical
signal received by the receiver 36 is input to the second filter 52 through the second amplifier
38, and the electrical signal filtered as it passes through the second filter 52 is the second switch.
The signal is output to the vibrator 40 through 48. For this reason, the vibration by the vibrator
40 is limited.
[0056]
The amplifier control unit 44 controls the transmission unit 12 so that the gain of the first
amplifier 32 is limited as the resonance suppression process. In one example, the amplifier
control unit 44 limits the gain of the first amplifier 32 based on the detection of the vibration by
the vibration detection unit 30. For this reason, the sound pressure transmitted to the
communication partner by the external communication device is reduced.
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[0057]
The amplifier control unit 44 controls the reception unit 14 so that the gain of the second
amplifier 38 is limited as the resonance suppression process. In one example, the amplifier
control unit 44 limits the gain of the second amplifier 38 based on the input of the electrical
signal to the receiver 36. For this reason, the magnitude | size of the vibration output from the
receiving part 14 is restrict | limited.
[0058]
When the user H (see FIG. 1) communicates with the communication partner, the bone
conduction communication device 10 shown in FIG. 3 operates as follows. The transmission unit
12, the reception unit 14, the control unit 16, and the like are driven by setting the state of the
power supply unit 20 to ON.
[0059]
The communication device of the communication partner detects, for example, the vibration of
the bone caused by the utterance of the communication partner, and outputs an electrical signal
in which the detection result is reflected to the bone conduction communication device 10. When
the receiver 36 receives an electrical signal from the communication device with which the
receiver is communicating, the amplifier control unit 44 limits the gain of the second amplifier
38. The electrical signal received by the receiver 36 is output to the vibrator 40 through the
second amplifier 38 and the second filter 52. The vibrator 40 vibrates based on the electrical
signal input from the receiver 36. The vibration of the vibrator 40 is transmitted to the auditory
organ via the bone of the user H, and the voice of the communication partner is transmitted to
the user H.
[0060]
When the vibration detection unit 30 detects the vibration of the bone caused by the utterance of
the user H, the amplifier control unit 44 limits the gain of the first amplifier 32. The electrical
signal in which the detection result of the vibration detection unit 30 is reflected passes through
the first amplifier 32 and the first filter 50 and is output to the transmitter 34. The transmitter
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34 outputs the electric signal input from the vibration detection unit 30 to the communication
device of the communication partner. The communication device at the other end of the
communication outputs the vibration based on the received electric signal. Thereby, the voice of
the user H is transmitted to the communication partner.
[0061]
Since the bone conduction communication device 10 can perform two-way communication with
the communication device of the communication partner, it is easy to use. Also, since the
resonance suppression processing is executed so that the occurrence of resonance in the
transmission unit 12 and the reception unit 14 is suppressed in the third state, howling occurs
even if the user H and the communication partner simultaneously utter It is difficult to do.
[0062]
According to the second embodiment, the following effects can be further obtained. (4) The
amplifier control unit 44 reduces the gain of the first amplifier 32 when the vibration detection
unit 30 detects a vibration. According to this configuration, the sound pressure transmitted to the
other party of communication by the external communication device is reduced, so that even if
the user H and the other party of speech simultaneously utter, the vibration by the user H's
utterance and the utterance of the other party And vibration caused by vibration are less likely to
resonate, and howling is less likely to occur.
[0063]
(5) The amplifier control unit 44 reduces the gain of the second amplifier 38 when the receiver
36 receives an electrical signal from an external communication device. According to this
configuration, since the magnitude of the vibration by the vibrator 40 is limited, even if the user
H and the communication partner speak at the same time, the vibration due to the user H's
speech and the vibration due to the communication partner's vocal It is difficult to resonate and
howling does not easily occur.
[0064]
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(6) The transmitter 34 outputs the electrical signal that has passed through the first filter 50 to
the communication device of the communication partner. According to this configuration, since
the electric signal input to the communication device of the communication partner does not
include a frequency component having an amplitude equal to or greater than the predetermined
amplitude, the user H and the communication partner simultaneously speak even when the user
speaks It is difficult for the vibration due to the voice of H and the vibration due to the voice of
the other party to resonate, and howling does not easily occur.
[0065]
(7) The vibrator 40 vibrates based on the electrical signal that has passed through the second
filter 52. According to this configuration, since the vibration by the vibrator 40 is limited, even if
the user H and the communication partner speak at the same time, the vibration due to the user
H's speech and the vibration due to the communication partner's speech do not easily resonate. ,
Howling does not occur easily. According to the second embodiment, the same effect as the effect
(3) obtained by the first embodiment can be obtained.
[0066]
Third Embodiment The bone conduction communication device 10 according to the third
embodiment differs from the bone conduction communication device 10 according to the second
embodiment in the points described below, and in the other points in the second embodiment.
The apparatus has substantially the same configuration as the bone conduction communication
device 10 of In the description of the bone conduction communication device 10 of the third
embodiment, the same reference numerals as in the bone conduction communication device 10
of the second embodiment denote the same parts, and a part or all of the description of the
structure will be described. I omit it.
[0067]
FIG. 4 is a block diagram of the main elements that make up the bone conduction communication
device 10. The states of the transmitter 12 and the receiver 14 include a first state and a third
state. In the first state, one output function of the transmitter 12 and the receiver 14 is valid, and
the other output function of the transmitter 12 and the receiver 14 is invalid. In one example, in
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the first state, the output function of the receiver 14 is valid, and the output function of the
transmitter 12 is invalid. The state of the transmitter 12 and the receiver 14 shown in FIG. 4 is
the first state.
[0068]
The switch control unit 42 switches between the first state and the third state based on the
detection result of the vibration detection unit 30 or the operation of the operation unit 22. In
one example, the switch control unit 42 switches the state of the transmission unit 12 and the
reception unit 14 from the first state to the third state based on the fact that the vibration is
detected by the vibration detection unit 30 in the first state. Control each switch 46, 48 so that
The switch control unit 42 transmits the transmission unit 12 based on an operation of the
operation unit 22 or when a predetermined time has elapsed since the states of the transmission
unit 12 and the reception unit 14 were switched to the third state. And each switch 46, 48 is
controlled so that the state of the receiving part 14 may be switched from a 3rd state to a 1st
state.
[0069]
When the user H and the communication partner communicate, the bone conduction
communication device 10 shown in FIG. 4 operates as follows. The transmission unit 12, the
reception unit 14, the control unit 16, and the like are driven by setting the state of the power
supply unit 20 to ON.
[0070]
The communicator at the other end of the communication detects the vibration of the bone
caused by the utterance of the other end of communication, and outputs an electrical signal in
which the detection result is reflected to the bone conduction communicator 10. When the
receiver 36 receives an electric signal from the communication device at the other end of the
communication when the state of the transmitter 12 and the receiver 14 is set to the first state,
the receiver 36 vibrators the received electric signal. Output to 40. The vibrator 40 vibrates
based on the signal received from the receiver 36. The vibration of the vibrator 40 is transmitted
to the auditory organ via the bone of the user H, and the voice of the communication partner is
transmitted to the user H. When the vibration detection unit 30 detects a vibration caused by the
17-04-2019
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user H's utterance in the first state, the switch control unit 42 changes the state of the
transmission unit 12 and the reception unit 14 from the first state to the third state. Switch.
[0071]
When the state of the transmission unit 12 and the reception unit 14 is set to the third state, the
bone conduction communication device 10 operates in substantially the same manner as the
bone conduction communication device 10 of the second embodiment. In the third state, when
the operation unit 22 is operated by the user H, or when a predetermined time has elapsed, the
switch control unit 42 changes the state of the transmission unit 12 and the reception unit 14
from the third state. Switch to the first state.
[0072]
Even if the user H utters while receiving an electrical signal from the communicator at the other
end of the communication in the first state, the bone conduction communicator 10 does not
output the electrical signal corresponding to the utterance to the transmitter 34 . Therefore, the
occurrence of resonance in the transmission unit 12 and the reception unit 14 is suppressed, and
howling does not easily occur. Also, since the resonance suppression processing is executed so
that the occurrence of resonance in the transmission unit 12 and the reception unit 14 is
suppressed in the third state, howling occurs even if the user H and the communication partner
simultaneously utter It is difficult to do. According to the third embodiment, substantially the
same effects as the effects (3) to (7) obtained by the second embodiment can be obtained.
[0073]
(Fourth Embodiment) The bone conduction communication device 10 according to the fourth
embodiment differs from the bone conduction communication device 10 according to the first
embodiment in the points described below, and in the other points in the first embodiment. The
bone conduction communication device 10 has substantially the same configuration as that of
the bone conduction communication device 10. In the description of the bone conduction
communication device 10 of the fourth embodiment, the same reference numerals as in the bone
conduction communication device 10 of the first embodiment denote the same parts, and a part
or all of the description of the structure will be described. I omit it.
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[0074]
FIG. 5 is a block diagram of the main elements that make up the bone conduction communication
device 10. The control unit 16 controls the receiving unit 14 based on, for example, the traveling
state of the bicycle 100. The traveling state of the bicycle 100 includes the vehicle speed of the
bicycle 100. The vehicle speed of the bicycle 100 is detected by, for example, a magnetic sensor
(not shown) provided on the front fork of the bicycle 100 and a magnet (not shown) provided on
the front wheel.
[0075]
The amplifier control unit 44 adjusts at least one of the current and the voltage output to the
second amplifier 38 based on the traveling state of the bicycle 100 to control the magnitude of
the vibration by the vibrator 40. In one example, the amplifier control unit 44 increases at least
one of the current and the voltage output to the second amplifier 38 when the vehicle speed of
the bicycle 100 is higher than a predetermined vehicle speed. Thereby, the sound pressure, the
volume, and the like of the sound transmitted to the user H (see FIG. 1) become large. The
amplifier control unit 44 lowers at least one of the current and voltage output to the second
amplifier 38 when the vehicle speed of the bicycle 100 is lower than a predetermined vehicle
speed. As a result, the sound pressure and the volume of the sound transmitted to the user H are
reduced.
[0076]
The control unit 16 can communicate with the external device 102. The external device 102
includes an attachment portion 104. The attachment portion 104 can be attached to the bicycle
100, for example. That is, the external device 102 is attached to the bicycle 100. The external
device 102 includes, for example, a function of displaying information, and a function of
operating information related to the bone conduction communication device 10. The external
device 102 may take a form not including the attachment portion 104.
[0077]
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The control unit 16 sets the states of the transmission unit 12 and the reception unit 14 based
on the signal received from the external device 102. In one example, the switch control unit 42
controls the switches 46 and 48 based on the signal received from the external device 102 so
that the first state and the second state are switched. That is, the states of the transmission unit
12 and the reception unit 14 are set. The external device 102 may not include at least one of the
function of setting the state of the transmission unit 12 and the function of setting the state of
the reception unit 14.
[0078]
The control unit 16 sets the output levels of the transmission unit 12 and the reception unit 14
based on the signal received from the external device 102. In one example, the amplifier control
unit 44 controls at least one of the current and the voltage output to the first amplifier 32 and
the second amplifier 38 based on the signal received from the external device 102. By controlling
at least one of the current and the voltage output to the first amplifier 32, the sound pressure,
the volume, and the like of the sound transmitted to the communication partner are adjusted.
That is, the output level of the transmission unit 12 includes the sound pressure, the sound
volume, and the like of the sound transmitted to the communication partner. In addition, by
controlling at least one of the current and the voltage output to the second amplifier 38, the
sound pressure, the volume, and the like of the sound transmitted to the user H are adjusted.
That is, the output level of the receiving unit 14 includes the sound pressure, the sound volume,
and the like of the sound transmitted to the user H. The external device 102 may not include at
least one of the function of setting the output level of the transmission unit 12 and the function
of setting the output level of the reception unit 14.
[0079]
According to the fourth embodiment, the following actions and effects can be obtained. (8) When
using the bone conduction communication device 10 while driving the bicycle 100, depending on
the speed of the bicycle 100, the user H may not be able to easily hear the voice of the other
party due to wind noise and the like. On the other hand, in the bone conduction communication
device 10, at least one of the current and the voltage output to the second amplifier 38 is
adjusted based on the speed of the bicycle 100. That is, the output level of the receiver 14 is
controlled. Therefore, it becomes easy for the user H to hear the voice of the communication
partner.
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[0080]
(9) According to the bone conduction communication device 10, the control unit 16
communicates with the external device 102. The external device 102 is attached to the bicycle
100. Therefore, when the user H uses the bone conduction communication device 10 while
driving the bicycle 100, the usability of the external device 102 is good. According to the fourth
embodiment, the same effects as the effects (1) to (3) obtained by the first embodiment can be
obtained.
[0081]
(Modification) The description of the above-described embodiments is an exemplification of
possible forms of the bone conduction communication device according to the present invention,
and is not intended to limit the forms. The bone conduction communication device according to
the present invention may take a form in which, for example, the modifications of the
embodiments shown below, and at least two modifications not inconsistent with each other, are
combined in addition to the above-described embodiments.
[0082]
The mounting target of the external device 102 according to the fourth embodiment can be
arbitrarily changed. In one example, the external device 102 includes an attachment for
attachment to the clothes of the user H or the accessories of the user H. An example of user H's
jewellery is a helmet.
[0083]
The control mode of the transmission unit 12 and the reception unit 14 by the control unit 16 of
the fourth embodiment can be arbitrarily changed. In the first example, the control unit 16
individually sets the states of the transmission unit 12 and the reception unit 14 based on the
signal received from the external device 102. In the second example, the control unit 16 sets the
state of only one of the transmission unit 12 and the reception unit 14 based on the signal
received from the external device 102.
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[0084]
In the third state in which the output functions of both the transmitting unit 12 and the receiving
unit 14 are valid, the control unit 16 of these modified examples outputs, for example, the
control of the transmitting unit 12, the control of the receiving unit 14, and the transmitting unit
12 Filtering processing of at least one of the electric signals and the filtering process of the
electric signals received by the receiving unit 14. When the control unit 16 executes either the
filter processing of the electric signal output from the transmission unit 12 or the filter
processing of the electric signal received by the reception unit 14 as the resonance suppression
processing, the bone conduction communication device 10 Have corresponding filters 50, 52.
[0085]
The relationship between the control unit 16 of the fourth embodiment and the external device
102 can be arbitrarily changed. In one example, the control unit 16 can not communicate with
the external device 102. The control form of the control unit 16 based on the traveling state of
the bicycle 100 according to the fourth embodiment can be arbitrarily changed. In the first
example, the control unit 16 controls the transmission unit 12 based on the traveling state of the
bicycle 100. That is, the amplifier control unit 44 adjusts at least one of the current and the
voltage to be output to the first amplifier 32 based on the traveling state of the bicycle 100. In
the second example, the control unit 16 controls both the transmission unit 12 and the reception
unit 14 based on the traveling state of the bicycle 100.
[0086]
In the third example, instead of or in addition to the traveling state of the bicycle 100, the control
unit 16 sets at least one of the transmitting unit 12 and the receiving unit 14 based on at least
one of the traveling environment of the bicycle 100 and the state of the user H. Control one side.
When controlling at least one of the transmitting unit 12 and the receiving unit 14 based on
information having individual differences, the control unit 16 can correct the level for controlling
the transmitting unit 12 and the receiving unit 14 based on past data or the like. .
[0087]
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The travel environment of the bicycle 100 includes at least one of road surface slope, road
surface altitude, wind power, weather, and noise level. The slope of the road surface is detected
by an angle sensor provided on the bicycle 100, for example. The height of the road surface is
detected by an air pressure sensor provided on the bicycle 100, for example. Wind power is
detected by a wind sensor provided on the bicycle 100, for example. The weather is input in
advance by the operation of the operation unit 22 or the external device 102, for example. The
noise level is detected by, for example, clothes of the user H, accessories of the user H, or a
vibration sensor provided on the bicycle 100.
[0088]
The state of the user H includes at least one of a heart beat and a consumed calorie. The
heartbeat is detected by, for example, a pulse wave sensor provided on the body of the user H or
the handle of the bicycle 100. The consumed calories are calculated from, for example, the
traveling distance of the bicycle 100 and the manual driving force.
[0089]
The contents included in the traveling state of the bicycle 100 according to the fourth
embodiment can be arbitrarily changed. In one example, the traveling state of the bicycle 100
includes at least one of the vibration of the bicycle 100 and the manual driving force instead of
or in addition to the vehicle speed of the bicycle 100. The vibration of the bicycle 100 is detected
by a vibration sensor provided on the bicycle 100, for example. The human driving force is
detected by, for example, a pressure sensor provided on a pedal of the bicycle 100.
[0090]
The contents of the first state included in the states of the transmission unit 12 and the reception
unit 14 of the third embodiment can be arbitrarily changed. In one example, in the first state, the
output function of the transmission unit 12 is valid, and the output function of the reception unit
14 is invalid. In the first state, the switch control unit 42 detects that no vibration is detected by
the vibration detection unit 30 and the state of the transmission unit 12 and the reception unit
14 is changed based on the fact that an electrical signal is input to the receiver 36. The switches
46 and 48 are controlled to switch from the 1 state to the third state.
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[0091]
The control mode of the transmission unit 12 executed by the control unit 16 according to the
second embodiment can be arbitrarily changed. In one example, based on the fact that the
vibration is detected by the vibration detection unit 30, the amplifier control unit 44 controls the
transmission unit 12 so that the sound pressure, the volume, and the like of the sound
transmitted to the communication partner are limited. Do. That is, the amplifier control unit 44
controls at least one of the current and the voltage output to the first amplifier 32.
[0092]
The control mode of the receiving unit 14 executed by the control unit 16 according to the
second embodiment can be arbitrarily changed. In one example, the amplifier control unit 44
controls the reception unit 14 so that the sound pressure, the volume, and the like of the sound
transmitted to the user H are limited based on the fact that the electrical signal is input to the
receiver 36. Run. That is, the amplifier control unit 44 controls at least one of the current and the
voltage output to the second amplifier 38.
[0093]
-The element which comprises the bone conduction communication device 10 of 1st Embodiment
can be changed arbitrarily. In one example, the bone conduction communication device 10
further includes a storage unit 54 as shown in FIG. The function of the storage unit 54 is to store
the electrical signal received by the receiving unit 14. The storage unit 54 stores the electrical
signal amplified by the second amplifier 38. Control unit 16 further includes a storage control
unit 56. The function of the storage control unit 56 causes the storage unit 54 to store the
electrical signal received by the receiving unit 14 in the second state, and switches the state of
the transmitting unit 12 and the receiving unit 14 from the second state to the first state. After
that, vibration is output to the receiving unit 14 based on the electrical signal stored in the
storage unit 54. The state of the transmitter 12 and the receiver 14 shown in FIG. 6 is the second
state.
[0094]
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In one example, the storage control unit 56 detects the electric signal received by the receiver 36
when, for example, the vibration is detected by the vibration detection unit 30 in the second state
and an electric signal is input to the receiver 36. The signal is output to the storage unit 54
through the second amplifier 38. Then, the storage control unit 56 reads the electrical signal
stored in the storage unit 54 after the switch control unit 42 switches the state of the
transmission unit 12 and the reception unit 14 from the second state to the first state, The
electrical signal is output to the vibrator 40 via the second switch 48. According to this
modification, it is difficult to miss the voice of the communication partner. The timing at which
the receiving unit 14 outputs the vibration based on the electric signal stored in the storage unit
54 can be arbitrarily selected by the operation of the operation unit 22.
[0095]
-The element which comprises the bone conduction communication apparatus 10 of 2nd
Embodiment can be changed arbitrarily. In one example, the bone conduction communication
device 10 further comprises a storage unit 58 as shown in FIG. The function of the storage unit
58 is to store the electrical signal received by the receiving unit 14. The storage unit 58 stores
the electrical signal amplified by the second amplifier 38. Control unit 16 further includes a
storage control unit 60. The function of the storage control unit 60 stores the electrical signal
received by the receiving unit 14 in the storage unit 58 while the transmitting unit 12 is
outputting the electrical signal in the resonance suppression process in the third state, and the
transmitting unit After the end of the output of the vibration by 12, the vibration is output to the
receiving unit 14 based on the electrical signal stored in the storage unit 58.
[0096]
In one example, when the vibration is detected by the vibration detection unit 30, the storage
control unit 60 causes the storage unit 58 to output the electrical signal received by the receiver
36 via the second amplifier 38. Then, when no vibration is detected by the vibration detection
unit 30, the storage control unit 60 reads the electric signal stored in the storage unit 58, and
outputs the electric signal to the vibrator 40 through the second switch 48. Do. The timing at
which the receiving unit 14 outputs the vibration based on the electric signal stored in the
storage unit 58 can be arbitrarily selected by the operation of the operation unit 22.
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[0097]
According to this modification, even if the user H and the communication partner speak at the
same time, it is difficult for the vibration due to the user H's voice and the vibration due to the
communication partner's voice to resonate easily, and howling does not easily occur. In addition,
since the voice of the communication partner can be heard when the user H is not speaking, it is
difficult to miss the voice of the communication partner. Note that the control unit 16 of this
modification includes the control of the transmission unit 12, the control of the reception unit
14, the filter processing of the electric signal output from the transmission unit 12, and the filter
processing of the electric signal received by the reception unit 14. It is possible to take a form of
performing a resonance suppression process in which at least one of them is omitted.
[0098]
The mounting target of the operation unit 22 can be arbitrarily changed. In one example, the
operation unit 22 includes the body of the user H, the accessory of the user H, or a mounting
portion for attaching to the bicycle 100. The relationship between the main body 18 and the
operation unit 22 can be arbitrarily changed. In one example, the operation unit 22 is configured
integrally with the main body 18.
[0099]
-The bone conduction communication apparatus 10 of a modification can take the form which
abbreviate | omitted the operation part 22 and the attaching part 28. FIG. The relationship
between the transmitter 12 and the receiver 14 can be arbitrarily changed. In one example, the
transmitter 12 and the receiver 14 are individually configured to enable wireless communication.
The bone conduction communication device 10 of this modified example can take a form in
which the connecting portion 24 is omitted.
[0100]
The mounting target of the receiving unit 14 can be arbitrarily changed. In the first example, the
bone conduction communication device 10 includes a mounting portion for mounting the
receiving unit 14 at a site different from the hole of the ear of the user H's body. In the second
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example, the bone conduction communication device 10 includes the clothes of the user H, the
accessories of the user H, or the attachment portion for attaching the receiver 14 to the bicycle
100. According to this second example, the receiving unit 14 is attached to a helmet, eyewear,
the neck of clothes, a saddle, an insole or the like. The bone conduction communication device 10
may have an attachment portion for attaching the transmission portion 12 separately from the
attachment portion for attaching the reception portion 14.
[0101]
The attachment target of the transmission unit 12 can be arbitrarily changed. In the first
example, the bone conduction communication device 10 includes an attachment for attaching the
transmitter 12 to a site different from the cheek of the user H's body. In the second example, the
bone conduction communication device 10 includes the clothes of the user H, the accessories of
the user H, or the attachment portion for attaching the transmission unit 12 to the bicycle 100.
According to this second example, the transmission unit 12 is attached to a helmet, eyewear, the
neck of clothes, a saddle, an insole or the like. The bone conduction communication device 10
may have an attachment portion for attaching the receiving portion 14 separately from the
attachment portion for attaching the transmission portion 12.
[0102]
The control form of the switch control unit 42 of the first embodiment can be arbitrarily
changed. In one example, the switch control unit 42 sets the states of the transmission unit 12
and the reception unit 14 based only on the operation of the operation unit 22. The same
modification holds true for the third and fourth embodiments.
[0103]
DESCRIPTION OF SYMBOLS 10 bone conduction communication device, 12 ... transmission part,
14 ... reception part, 16 ... control part, 18 ... main body, 22 ... operation part, 26, 28, 104 ...
attachment part, 30 ... vibration detection part, 54, 58 ... Storage unit, 100: bicycle, 102: external
device, H: user.
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