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JP2007228303

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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 JP2007228303
PROBLEM TO BE SOLVED: To provide a communication device which can be miniaturized while
using a plurality of microphones. SOLUTION: A speaker SP for outputting audio information
transmitted through an information line L2, microphones M1 and M2 for collecting audio and
outputting audio signals, and audio signals output from the microphones M1 and M2 A
microphone A1 is provided on the surface side of a diaphragm 74 of the speaker SP, and the
microphone M2 is a component of the speaker SP. It is disposed on the back side of the
diaphragm 74. [Selected figure] Figure 1
Intercom
[0001]
The present invention relates to a telephone set.
[0002]
Conventionally, there is a telephone set installed indoors by an intercom system etc., and a
speaker for outputting voice from the telephone set installed at another place, a microphone for
inputting voice to be transmitted to the other telephone set, etc. There is.
[0003]
And since howling occurs when the sound generated from the speaker gets into the microphone,
various measures against howling are taken.
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1
[0004]
For example, in a communication device A ′ provided with a speaker SP and a pair of
microphones M1 and M2 as shown in FIGS. 27 (a) and 27 (b), this corresponds to the difference
in distance between the two microphones M1 and M2 and the speaker SP. A delay circuit that
delays the output of the microphone M1 closer to the speaker SP by the delay time of the sound
wave, and level adjustment corresponding to the difference in distance between both the
microphones M1 and M2 and the speaker SP A level adjustment amplifier circuit for matching
the output levels of the microphones M1 and M2 and a differential amplification circuit having
both outputs of the microphones M1 and M2 passing through the delay circuit and the level
adjustment amplifier circuit are provided to perform differential amplification A communication
device has been proposed which uses the output of the circuit as a transmission signal.
[0005]
In this communication device A ', after both microphones M1 and M2 pick up the sound from the
speaker SP, delay and level adjustment are performed, and the sound component from the
speaker SP input to both microphones M1 and M2 is differentially amplified. It is trying to
prevent howling by eliminating only the sound component from the speaker SP (canceling
process) by canceling out.
(See, for example, Patent Document 1) Patent No. 2607257 (Page 2 left column, line 13 to right
column line 3, line 4 page right column, line 26 to line 49, FIG. 1, FIG. 5)
[0006]
However, in the communication device A 'of Patent Document 1, the speaker SP and the two
microphones M1 and M2 are disposed on the same plane of the front surface of the housing A1',
and the device itself becomes large. was there.
[0007]
The present invention has been made in view of the above-described problems, and an object
thereof is to provide a communication device which can be miniaturized while using a plurality of
microphones.
[0008]
According to a first aspect of the present invention, there is provided a speaker for outputting
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voice information transmitted through a wire, one or more first microphones for collecting voice
and outputting a voice signal, and one or more second microphones. The main body includes a
microphone and a signal processing unit that processes each audio signal output from the first
and second microphones and transmits the signal through a wire. The first microphone is a
vibration of the speaker. The second microphone may be disposed on the front side of the plate,
and the second microphone may be disposed on the rear side of the diaphragm of the speaker.
[0009]
According to the present invention, miniaturization can be achieved by opposing the first and
second microphones to the front and back of the diaphragm of the speaker, and further
miniaturization can be achieved by incorporating at least the second microphone into the
speaker. Can be
[0010]
According to a second aspect of the present invention, in the first aspect, the first microphone is
disposed with the high-sensitivity sound collecting surface facing the surface of the diaphragm of
the speaker, and the second microphone is a high-sensitivity collection. It is characterized in that
the sound surface is directed to the back surface of the diaphragm of the speaker.
[0011]
According to the present invention, the sound emitted by the speaker can be reliably collected.
[0012]
The invention of claim 3 relates to the method according to claim 1 or 2, wherein a distance
between a sound collecting surface of the first microphone and a surface of a diaphragm of the
speaker, a sound collecting surface of the second microphone and a vibration of the speaker It is
characterized in that the distance to the back surface of the plate is the same.
[0013]
According to the present invention, the outputs of the first and second microphones with respect
to the sound from the speaker SP can be matched at the same amplitude and in the opposite
phase of the period.
[0014]
According to a fourth aspect of the present invention, in the first or second aspect, the signal
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processing unit performs level adjustment corresponding to the difference between the distances
of the first and second microphones and the speaker to perform the processing on the sound
from the speaker. The audio signal is delayed according to the transmission time of the sound
wave corresponding to the difference between the distance between the first and second
microphones and the speaker, and the level adjustment means for matching the output levels of
the first and second microphones. Delay means for matching the periods of the voice signals of
the first and second microphones with respect to the voice from the speaker in reverse phase,
level adjusting means, and voice signals of the first and second microphones passing through the
delay means And adding means for outputting a sum.
[0015]
According to the present invention, the voice component from the speaker contained in the voice
signal to be transmitted is canceled out, and the voice component from the sound source outside
the apparatus remains with a sufficient amplitude maintained, so the voice from the sound
source to be left The relative difference between the component and the audio component from
the speaker to be reduced is large.
Therefore, the voice component from the speaker can be reduced without reducing the
transmission voice to be left as much as possible from the voice signal to be transmitted, and the
occurrence of howling can be reliably prevented.
[0016]
The invention according to claim 5 is characterized in that, in any one of claims 1 to 4, the
speaker comprises an external magnet type magnetic circuit.
[0017]
According to the present invention, the microphone can be easily assembled to the speaker.
[0018]
According to the invention of claim 6, according to any one of claims 1 to 5, the main body is
electrically connected to at least one system of wiring installed in a ceiling surface, a wall surface
and a floor surface indoors to transmit power and information signals. A second connection
portion for electrically connecting directly to the first connection portion to receive power supply
and exchanging information signals with the first connection portion; The audio information
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transmitted through the connection unit is output, and the microphone transmits the audio
information through the signal processing unit and the second connection unit, and stylization of
the arrangement and shape of the first connection unit Corresponding to the second connection
portion in a fixed form.
[0019]
According to the present invention, by electrically connecting the second connection portion to
the first connection portion, the communication apparatus can simultaneously secure the power
path and the information path, and there is no need to newly perform wiring work. It is possible
to obtain good installation.
[0020]
As described above, according to the present invention, in the communication device, there is an
effect that downsizing can be realized while using a plurality of microphones.
[0021]
Hereinafter, embodiments of the present invention will be described based on the drawings.
[0022]
(First Embodiment) A telephone apparatus A according to the present embodiment is shown in
FIGS. 1 to 3 and includes a speaker SP, a microphone M1 (first microphone), a microphone M2
(second microphone) in a housing (main body) A1. , A call switch SW1, a communication unit
35a, echo cancellation units 35b and 35c, an amplification unit 35d, and a signal processing unit
35e.
The audio signal transmitted from the communication device A installed in another room or the
like through the information line L2 is received by the communication unit 35a and amplified by
the amplification unit 35d through the echo cancellation unit 35b, and then the speaker Output
from SP.
In addition, by operating the call switch SW1, a call is made possible, and each audio signal input
from the microphones M1 and M2 is subjected to signal processing to be described later by the
signal processing unit 35e, and then passes through the echo cancellation unit 35c. It is
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transmitted from the communication unit 35a to the communication device A installed in another
room or the like via the information line L2.
That is, it functions as an interphone capable of interactive communication between rooms.
The power supply of the communication device A may be supplied from an outlet provided near
the installation site, or may be supplied through the information line L2.
[0023]
Hereinafter, the configuration of the speaker SP will be described.
As shown in FIGS. 1A and 1B, the speaker SP includes a cylindrical permanent magnet 70 (e.g.,
residual magnetic flux density 1.39T to 1.43T) formed of neodymium and one end face of the
permanent magnet 70. A circular magnetic body 71 formed of an iron-based material having a
thickness of about 0.8 mm, such as cold rolled steel plate (SPCC, SPCEN) or electromagnetic soft
iron (SUY) concentrically disposed on the upper side; Forms a rib 71 a facing the inner peripheral
surface of the permanent magnet 70.
Between the inner peripheral surface of the permanent magnet 70 and the rib 71a, a voice coil
72 formed by winding a polyurethane copper wire (for example, φ 0.05 mm) around a paper
pipe of kraft paper is disposed.
That is, the speaker SP is provided with an external magnet type magnetic circuit in which the
permanent magnet 70 is disposed on the outer peripheral side of the voice coil 72.
[0024]
The permanent magnet 70 and the magnetic body 71 are housed in a cylindrical case 73 made of
synthetic resin such as acetal resin, the outer peripheral surface of the permanent magnet 70 is
in contact with the inner peripheral surface of the case 73, and the outer peripheral surface of
the magnetic body 71 is And a notch 73a provided at one end of the inner peripheral surface of
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the case 73.
By forming the case 73 with a nonmagnetic material such as a synthetic resin, it is possible to
reduce the leakage magnetic flux from the outer peripheral surface of the permanent magnet 70
and the magnetic body 71 as compared to the case formed with a magnetic material.
[0025]
A notch 73 b is provided at the other end of the inner peripheral surface of the case 73, and an
edge on the outer peripheral side of the dome-shaped diaphragm 74 is fixed to an end surface of
the notch 73 b.
[0026]
The diaphragm 74 is formed of a thermoplastic plastic (for example, 12 μm to 35 μm thick)
such as PET (PolyEthylene Terephtalate) or PEI (Polyetherimide).
A cylindrical bobbin 75 is fixed to the back surface of the diaphragm 74, and a voice coil 72 is
provided at the rear end of the bobbin 75.
The bobbin 75 and the voice coil 72 are provided such that the voice coil 72 is located at the end
of the rib 71a, and freely move in the front-rear direction in the vicinity of the end of the rib 71a.
[0027]
When a voice signal is input to the polyurethane copper wire of the voice coil 72, an
electromagnetic force is generated in the voice coil 72 by the current of the voice signal and the
magnetic field of the permanent magnet 70. It is vibrated in the direction.
At this time, the diaphragm 74 emits a sound according to the audio signal.
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That is, an electrodynamic speaker SP is configured (for example, a diameter of about 20 to 25
mm and a thickness of about 4.5 mm).
[0028]
Here, in order to apply a strong excitation force to the diaphragm 74, the bobbin 75 may be
connected to a position (far from the center of the diaphragm 74) as far as possible from the
outer edge of the diaphragm 74 as a fulcrum.
In the present speaker SP, since the voice coil 72 is disposed on the inner surface side of the
permanent magnet 70, the bobbin 75 is connected to the center of the diaphragm 74 so that the
diaphragm 74 can be efficiently given an exciting force. .
[0029]
In addition, since an external magnet type magnetic circuit in which the permanent magnet 70 is
disposed on the outer peripheral side of the voice coil 72 is configured, the permanent magnet is
superior to the internal magnet type magnetic circuit in which the permanent magnet is disposed
on the inner peripheral side of the voice coil. As a result, the output efficiency of the speaker can
be improved, and in the case of the same output, the size can be reduced as compared with an
internal magnet type speaker.
[0030]
Further, the speaker SP has an exhaust hole 76 axially inserted on the inner peripheral side of
the rib 71a of the circular magnetic body 71, and communicates the back surface of the
diaphragm 74 to the outside.
A plurality of exhaust holes 76 are annularly formed around the center of the circular magnetic
body 71.
By exhausting the inside of the speaker SP when the diaphragm 74 vibrates through the exhaust
hole 76, it is possible to reduce the stress of the speaker SP due to the pressure change during
the vibration.
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[0031]
Further, a convex portion 71 b protruding toward the diaphragm 74 is formed at the center of
the circular magnetic body 71, and a concave portion 71 c is provided in the axial direction in
the convex portion 71 b.
The recess 71 c constitutes a microphone storage unit that stores the microphone M 2 opposite
to the back surface of the diaphragm 74.
[0032]
The speaker SP is attached to the inside of the front surface of the module main body 10A by
fastening with a screw or the like (see FIGS. 1A and 1B).
[0033]
Next, the microphones M1 and M2 have directivity higher in sensitivity in one direction than in
the other direction, and a configuration example of the microphones M1 and M2 having the
directivity is shown below.
[0034]
The microphones M1 and M2 are capacitor-type silicon microphones, and the acoustic signalelectric signal conversion unit has the configuration shown in FIGS. 4 (a) and 4 (b).
A lower electrode 51 made of a silicon substrate formed on a substrate 57, a vibrating portion
53c (sound collecting surface), and support portions 53b extended at four places on the outer
periphery of the vibrating portion 53c, and made of polysilicon film The upper electrode 53 is
formed, the cavity 54a formed between the lower electrode 51 and the upper electrode 53, and
the insulating layer 52 made of a SiN film disposed between the lower electrode 51 and the
upper electrode 53 It is done.
The insulating layer 52 covers almost the entire surface of the lower electrode 51 except that the
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insulating layer 52 has an opening substantially immediately below the vibrating portion 53 c of
the upper electrode 53 and a region for connecting a terminal to the lower electrode 51.
Further, a plurality of small holes 53a are formed in the vibrating portion 53c.
Further, a terminal 55 made of an Au / TiW film connected to the lower electrode 51 and a
terminal 55 made of an Au / TiW film connected to the upper electrode 53 are formed on the
supporting portion 53b in the periphery.
[0035]
Then, when vibration corresponding to the sound is applied from the outside, the upper electrode
53 which is a vibrating film vibrates, and the distance to the lower electrode 51 changes.
As a result, the electrostatic capacitances of both the electrodes 51 and 53 change, the charge
amount changes, and a current flows from the both electrodes 51 and 53 in accordance with the
change of the charge amount.
[0036]
The current flowing from the both electrodes 51 and 53 is converted into a voltage by the circuit
shown in FIG. 5 and output to the signal processing unit 35e as an audio signal. In FIG. 5, the
acoustic signal-electric signal conversion units of the microphones M1 and M2 are indicated by
Cm1 and Cm2, respectively. The microphone M2 includes a constant voltage circuit K1 formed of
a chip IC that converts operating power + V (for example 5 V) to a constant voltage Vr (for
example 12 V), and in the microphone M1, resistance R11 and acoustic signal-electric signal
conversion A constant voltage Vr is applied to a series circuit with the portion Cm1, and a
connection midpoint between the resistor R11 and the acoustic signal-electric signal conversion
portion Cm1 is connected to the gate terminal of the junction type J-FET element S11 via a
capacitor C11. Ru. The drain terminal of the J-FET element S11 is connected to the operating
power supply + V, and the source terminal is connected to the ground via the resistor R12. Here,
the J-FET element S11 is for converting the electrical impedance, and the voltage at the source
terminal of the J-FET element S11 is output as an audio signal to the signal processing unit 35e.
04-05-2019
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[0037]
Similarly in the microphone M2, a constant voltage Vr is applied to a series circuit of a resistor
R21 and an acoustic signal-electric signal converter Cm2, and a connection midpoint between the
resistor R21 and the acoustic signal-electric signal converter Cm2 is a capacitor C21. Are
connected to the gate terminal of the junction-type J-FET device S21. The drain terminal of the JFET element S21 is connected to the operating power supply + V, and the source terminal is
connected to the ground via the resistor R22. Here, the J-FET element S21 is for converting the
electrical impedance, and the voltage of the source terminal of the J-FET element S21 is output as
an audio signal to the signal processing unit 35e.
[0038]
Then, as shown in FIG. 4B, the lower electrode 51 facing the approximate center of the vibrating
portion 53c and the insertion hole 56 are provided in the substrate 57, and the cavity 54a is
communicated with the outside. The acoustic signal (indirect sound) reaching from the rear) to
the front (upper electrode 53 side) and reaching the front of the vibrating portion 53c is an
acoustic signal (direct sound) from the rear via the insertion hole 56 to the rear surface of the
vibrating portion 53c It can be canceled by and can obtain the unidirectionality limited to the
front. At this time, an obstacle is formed in the insertion hole 56, and the speed of the direct
sound is delayed so as to arrive simultaneously with the indirect sound.
[0039]
Alternatively, attach an elongated tube whose slit is cut on the side to the tip of the microphone
unit, and have an interference tube type that acoustically narrows the directivity, and two
unidirectional microphone units of positive phase and negative phase, You may use the
secondary sound pressure gradient type etc. which electrically narrow directivity.
[0040]
By configuring the capacitor type silicon microphone as described above, the microphones M1
and M2 have directivity higher in sensitivity in one direction (the vibrating portion 53c side) than
in the other direction.
[0041]
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11
Then, as shown in FIGS. 1 (a) and 1 (b), the microphone M1 is provided with a rectangular framelike rib 15 provided opposite to the surface center of the diaphragm 74 of the speaker SP inside
the front surface of the housing A1. The vibrating portion 53c is positioned so as to face the
surface of the diaphragm 74 of the speaker SP.
[0042]
Further, the microphone M2 is disposed in the recess 71c provided at the center of the magnetic
body 71 so as to face the center of the back surface of the diaphragm 74 of the speaker SP so
that the vibrating portion 53c faces the back surface of the diaphragm 74 of the speaker SP. Is
positioned at
[0043]
Further, a plurality of sound holes B are formed in the front of the housing A1 facing the speaker
SP and the microphone M1.
[0044]
And in this embodiment, in order to prevent the howling which occurs when the microphones
M1 and M2 pick up the audio output of the speaker SP, the following configuration is provided.
[0045]
First, as shown in FIG. 6, the signal processing unit 35e converts the analog output of the
microphone M1 into a digital signal, and the audio band (300 to 4000 Hz) from the output of the
A / D conversion unit 350. A band pass filter 351 for removing noise of frequencies other than
the above, a level adjustment unit 352 for amplifying or attenuating the output of the band pass
filter 351, a delay circuit 353 for delaying the output of the level adjustment unit 352, and an
analog output of the microphone M2 A / D converter 354 for converting the digital signal into a
digital signal, a band pass filter 355 for removing noise of frequencies other than the voice band
from the output of the A / D converter 354, and an output of the band pass filter 355 of the
delay circuit 353. The adder circuit 356 for adding to the output and the output of the adder
circuit 356 are And a D / A conversion circuit 357 for converting the grayed signal.
[0046]
7 to 10 show audio signal waveforms of respective units of the signal processing unit 35e.
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Although each output of A / D conversion units 350 and 354, band pass filters 351 and 355,
level adjustment unit 352, delay circuit 353, and addition circuit 356 is a digital signal, each of
FIGS. The waveform is shown by an analog waveform.
[0047]
Hereinafter, the case where the distance X2 from the center of the surface of the speaker SP to
the center of the microphone M1 and the distance X2 from the center of the back of the speaker
SP to the center of the microphone M2 (see FIG. 1B), X1 <X2 will be described. .
[0048]
First, when the sound from the speaker SP is picked up by the microphones M1 and M2, the
amplitude Y2 of the microphone M2 is smaller than the amplitude Y11 of the microphone M1
due to the difference in distance between the two microphones M1 and M2 and the speaker SP.
Further, the microphone M1 is disposed opposite to the front surface of the diaphragm 74 of the
speaker SP, and the microphone M2 is disposed within the speaker SP opposite to the rear
surface of the diaphragm 74 of the speaker SP. The delay time of the sound wave [Td = (X2-X1) /
Vs] corresponding to the difference (X2-X1) of the distance between both the microphones M1
and M2 and the speaker SP as well as the phase opposite to the output Y21 of the microphone
M2. The phase of the output Y21 of the microphone M2 is delayed by Vs (sound speed) (see
FIGS. 7A and 7B).
[0049]
The audio signals collected by the microphones M1 and M2 as described above are converted to
digital form by the A / D conversion units 350 and 354 and then generated at the outputs Y12
and Y22 from which noise is removed by the band pass filters 351 and 355. (See FIG. 8 (a) (b)).
[0050]
Next, the level adjustment unit 352 attenuates the amplitude of the output Y12, performs level
adjustment corresponding to the difference (X2-X1) in the distance between the two
microphones M1 and M2 and the speaker SP, and The output levels of the microphones M1 and
M2 are matched (see FIGS. 9A and 9B).
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[0051]
Next, the delay circuit 353 is composed of a time delay element or a CR phase delay circuit, and
by delaying the output Y13 of the level adjustment unit 352 by the delay time Td, both
microphones M1, M1 for the sound from the speaker SP Match the periods of the output of M2
in antiphase.
(Refer to FIG. 10 (a) (b)).
[0052]
Then, the adder circuit 356 adds the outputs Y14 and Y23 in opposite phase to each other to
generate an output Ya in which the audio signal corresponding to the audio from the speaker SP
is canceled (see FIG. 10C). From the / A conversion circuit 357, an audio signal obtained by
analog-converting the output Ya is output.
[0053]
On the other hand, the outputs Y11 and Y21 of the microphones M1 and M2 have substantially
the same phase with respect to the voice emitted by the speaker H in front of the microphones
M1 and M2, and even if the addition processing is performed by the adding circuit 356 A signal
corresponding to the speech emitted by the speaker H remains.
Since the signal from the microphone M2 is subjected to the delay processing by the delay circuit
353, the voice emitted by the speaker H deviates by the delay time Td between the signal of the
microphone M1 and the signal of the microphone M2, but the delay time Td is The deviation is
on the order of μsec, and the person on the other end of the call can not identify this deviation
on the order of μsec.
That is, there is no problem as an audio signal transmitted to the human ear.
[0054]
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14
As described above, at the output Ya of the addition circuit 356, the voice component from the
speaker SP is reduced, and the voice component emitted from the speaker H ahead of the
communication device A toward the microphones M1 and M2 remains, and the output Ya Then,
the relative difference between the voice component from the speaker H who wants to leave and
the voice component from the speaker SP that wants to reduce becomes large.
That is, even when the voice from the speaker H and the voice from the speaker SP are
simultaneously generated, only the voice component from the speaker SP is reduced while
maintaining sufficient amplitude for the voice component from the speaker H. Therefore, it is
possible to prevent the howling caused by the microphones M1 and M2 picking up the audio
output of the speaker SP.
[0055]
When the distance X2 from the center of the surface of the speaker SP to the center of the
microphone M1 and the distance X2 from the center of the back of the speaker SP to the center
of the microphone M2 are X1> X2, the level adjustment unit 352 and the delay circuit 353 are
provided. May be provided at the output of the microphone M2, and the same processing as
described above may be performed.
[0056]
Next, the audio signal output from the D / A conversion circuit 357 is output to the echo
cancellation unit 35c, and the echo cancellation units 35b and 35c (see FIG. 3) perform the
following processing to further prevent howling. .
[0057]
First, the echo cancellation unit 35c takes in the output of the echo cancellation unit 35b as a
reference signal and performs an operation on the output of the signal processing unit 35e to
further process the audio signal that has entered the microphones M1 and M2 from the speaker
SP. Cancel.
On the other hand, the echo cancellation unit 35b also takes in the output of the echo
cancellation unit 35c as a reference signal, and performs an operation on the output of the
communication unit 35a, whereby the voice signal from the speaker to the microphone at the
04-05-2019
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other end of the communication destination Cancel the
[0058]
Specifically, the echo cancellation units 35b and 35c are configured by: speaker SP-microphone
M1, M2-signal processing unit 35e-echo cancellation unit 35c-communication unit 35a-echo
cancellation unit 35b-amplification unit 35d-speaker SP By adjusting the amount of loss in
variable loss means (not shown) provided in the loop circuit, howling is prevented by making the
loop gain 1 or less.
Here, it is considered that the smaller one of the transmission signal and the reception signal is
not important, and the transmission loss of the variable loss circuit inserted in the transmission
path of the smaller signal level is increased.
[0059]
The number of microphones M1 and M2 is not limited to one each, and a plurality of
microphones according to the situation may be arranged to perform the same processing as
described above.
[0060]
Second Embodiment In the first embodiment, the distance X2 from the center of the surface of
the speaker SP to the center of the microphone M1 and the distance X2 from the center of the
back of the speaker SP to the center of the microphone M2 are X1 / X2. In the embodiment, the
microphones M1 and M2 are disposed on the front surface side and the rear surface side of the
speaker SP so that X1 = X2.
[0061]
Then, the delay time [Td = (X2-X1) / Vs] (Vs is the velocity of sound) of the sound wave
corresponding to the difference (X2-X1) of the distance between both the microphones M1 and
M2 and the speaker SP is (X2-X1) Becomes 0, the delay time Td becomes 0, and the sound from
the speaker SP reaches the microphones M1 and M2 simultaneously.
04-05-2019
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Therefore, in the outputs Y11 and Y21 of the microphones M1 and M2, the periods of the
outputs to the sound from the speaker SP coincide with each other in reverse phase.
Furthermore, the amplitudes of the outputs Y11 and Y21 for the sound from the speaker SP are
also the same.
[0062]
Therefore, the level adjustment unit 352 and the delay circuit 353 of the signal processing unit
35e of the first embodiment can be omitted, and the circuit can be simplified.
[0063]
Furthermore, by arranging the microphones M1 and M2 so that the distances X1 and X2 from
the center of the speaker SP are equal to each other, the arrival time at which the sound emitted
from the speaker SP reaches the microphones M1 and M2 has a wide frequency band The sound
components from the speaker SP are canceled over a wide frequency band by addition
processing in the addition circuit 356.
Therefore, the sound component from the speaker SP included in the output Ya is further
reduced, and the howling prevention effect is further improved.
[0064]
The other configuration is the same as that of the first embodiment, and the description is
omitted.
[0065]
Third Embodiment In the first and second embodiments, the microphones M1 and M2 are
separately provided. However, as shown in FIG. 11, an integral microphone M0 provided with
vibrating portions 58 (sound collecting surfaces) at both ends is provided. By using each of the
vibrating portions 58, the microphones M1 and M2 may be configured.
[0066]
In this case, the microphone M0 is disposed through the hole formed at the center of the
04-05-2019
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diaphragm 74 of the speaker SP, but includes the external magnetic type magnetic circuit as
shown in FIGS. 1 (a) and 1 (b). In the case of the speaker SP, since there is no permanent magnet
on the inner peripheral side of the voice coil 72, the microphone M0 can be easily incorporated
at the center of the speaker SP.
[0067]
Embodiment 4 An example of a wiring system using the telephone apparatus of the present
invention will be described below.
[0068]
First, as shown in FIG. 12, one or more switch boxes 2 embedded in a suitable place in a building
are provided, and a power line L1 and an information line L2 preceded in the wall between the
switch boxes 2 are provided. In addition to feed and wiring, a power line L1 drawn into the room
via the master breaker MB and the branch breaker BB in the wiring board 1 is introduced to the
switch box 2 at the starting end, and a gateway to the external Internet network NT. An
information line L2 connected via a GW (router, built-in hub) is introduced.
Here, the switch box 2 is provided at a high position HP such as a ceiling surface in a room, the
one provided at a height position (middle position MP) recommended by a wall switch or the like,
and the vicinity of a foot (low position LP) And the ones provided in
[0069]
These switch boxes 2 are, for example, standards corresponding to a series of mounting frames 4
(see FIG. 13) to which three embedding type wiring fixtures of one rectangular module size
standardized by JIS can be attached. The power line L1 and the information line L2 sent from the
wiring board 1 or the other switch box 2 from the top as shown in FIG. 21 are introduced, and
the other switch box 2 is A power line L1 and an information line L2 for leading and wiring are
derived.
The body of the gate device 3 to which the basic function module 8 is connected is attached to
each switch box 2 by means of the mounting frame 4 respectively.
04-05-2019
18
[0070]
As shown in FIG. 13, the mounting frame 4 is provided with a window 4a for mounting a device
at the center, and the front of the device body to be mounted is fitted from the back to the
window 4a. The apparatus main body is fixed by making the engagement parts provided on both
sides of the apparatus main body engage with the locking means provided on the side of the
apparatus.
The instrument body is attached to the switch box 2 together with the mounting holes 4b
provided in the upper and lower frame pieces by fastening mounting screws (not shown) to the
screw holes (not shown) of the switch box 2.
In addition, when the switch box 2 is not used, when attaching to a wall panel having an opening,
the wall panel can be held by so-called clamps and attached, or can be attached using wood
screws.
[0071]
As shown in FIG. 14, the gate device 3 is provided with the connection terminals 5a and 5b of the
quick connection terminal structure and the connection terminals 5a 'and 5b' for feed wiring on
the back of the body, and the corresponding power lines L1 and information lines It is designed
to connect L2.
Further, a power path connection port 6A having a contact portion electrically connected to the
power line L1 sent to the front of the body, and an information path electrically connected to the
information line L2 sent. A modularized connection port 6 having a connection port 6B is
provided as shown in FIG.
[0072]
The connection ports 6A and 6B are standardized as a system, such as the distance between the
two and the arrangement of the internal contacts, the shape of the opening, etc. The front surface
of the switch box 2 is covered so as to cover the body front surface of the gate device 3. The
parts to be connected 7A and 7B of the connector 7 provided on the back of the basic functional
04-05-2019
19
module 8 shown in FIG. 15 attached to the opening side are detachably coupled to the
connection ports 6A and 6B.
[0073]
The basic function module 8 constitutes a functional device together with the extended function
module 10 described later, and is a flat module main body made of synthetic resin
(noncrystalline general-purpose plastic such as ABS) shown in FIGS. 15 and 16A. The circuit
shown in FIG. 18 is built in 8A, and by connecting the connected parts 7A and 7B of the
connector 7 on the back to the connection ports 6A and 6B of the gate device 3, the front
opening of the switch box 2 is obtained. Cover and a flange on the periphery is superimposed on
the wall surface around the front opening of the switch box 2. In this state, a mounting screw
(not shown) is attached to the mounting hole 80 drilled in the center of the upper and lower
portions. The switch box 2 is attached to the switch box 2 via the mounting frame 4 by inserting
and inserting into the screw holes 4 c provided in the upper and lower frames of the mounting
frame 4.
[0074]
In the front surface portion of the module main body 8A, a wide groove 81a and a narrow width
are formed in the width direction of the module main body 8A at positions above or below the
opening positions of the upper and lower mounting holes 80 as shown in FIG. A connecting
groove portion 81 formed of a groove 81b is formed to be divided into right and left by a
partition wall 82 at the center.
[0075]
The one side half of the connecting member 100 made of synthetic resin shown in FIG. 16 (b) is
inserted into the connecting groove 81 on the left side or the right side of the dividing wall 82 to
a position abutted against the dividing wall 82. The basic function module 8 and the extended
function module 10 can be mechanically coupled by being fitted into the connecting groove 81
similarly provided on the extended function module 10 side as shown in FIG.
The coupling body 100 is provided with a groove 100a on the back surface in which the wide
groove 81a and the partition wall 81c for dividing the narrow groove 81b are fitted, and inserted
so as to straddle both the grooves 81a and 81b.
04-05-2019
20
Then, in the basic function module 8, the cosmetic cover 8B is detachably attached from the front
surface side, and in the extended function module 10, the cover 83 is closed to fit over the
connection groove 81 of the both. It holds so that a certain connection object 100 may not drop
out, and maintains a connection state.
Thus, the connector 100 and the connecting groove 81 constitute a connecting means between
the basic function module 8 and the extended function module 10.
[0076]
In the wiring system of the present embodiment, a plurality of types of basic function modules 8
are prepared according to functions, and as shown in FIG. 18, the commercial power AC supplied
from the connected portion 7A as shown in FIG. , An AC / DC converter 21 for converting the
power supply to + V of the internal circuit composed of a stable DC voltage, and a communication
for transmitting and receiving an information signal transmitted bidirectionally through the
information line L2 connected via the connected portion 7B. Transmission unit 22, power
connectors 9A and 9A 'connected to commercial power AC via connected unit 7A,
communication connector connected to information line L2 via communication unit 22 and
connected unit 7B 9B and 9B 'and data is received from the information signal received by the
communication transmission unit 22 to perform processing, and the basic function module 8 to
another basic function module 8 or Transfer of data between the processing unit 23 that
performs data generation processing when sending data via the extended function module 10 or
via the information line L2, and the processing unit 23 via the I / O interface 24 The functional
unit 25 is operated and operated, and these units are supplied with operating power + V from the
AC / DC converter 21.
The configuration of this function unit 25 differs depending on the basic function module 8.
[0077]
A male power connector 9A and an information connector 9B are provided on one side of the
module main body 8A of the basic function module 8 while a female power connector 9A 'and an
information connector 9B' are provided on the other side. There is.
04-05-2019
21
Then, by connecting the contact pieces of the connected portion 7A internally to the contact
pieces of the power supply connectors 9A and 9A ′, the commercial power supply AC can be
supplied even if the extended function module 10 is connected in either left or right direction. To
be able to
Furthermore, by connecting the input and output of the communication transmission unit 22 to
the contact pieces of the information connectors 9B and 9B ′, the information signal can be
transmitted and received regardless of whether the extended function module 10 is connected in
either left or right direction. .
The power supply connectors 9A and 9A 'are offset to one end on both side surfaces of the
module body 8A, and the information connectors 9B and 9B' are offset to the other end on both
side surfaces of the module body 8A. Will be placed.
[0078]
In these power supply connectors 9A, 9A 'and information connectors 9B, 9B', the arrangement
of the contact portions inside, the shape of the opening portion, etc. are standardized as a system,
and further, the power connectors and information arranged on the same plane The spacing with
the connector is also standardized as a system, and power connectors 11A and 11A 'and
information connectors 11B and 11B' of the extended function module 10, which will be
described later, are detachably coupled.
[0079]
Next, in the wiring system according to the present embodiment, a plurality of types of extended
function modules 10 are prepared by the function of receiving power supply and operating, and
as shown in FIG. , 11A ′, the information connector 11B, 11B ′, and the power connector 11A,
11A ′, the commercial power supply AC is converted to the operating power supply + V of the
internal circuit composed of a stable DC voltage. AC / DC converter 31, communication
transmission unit 32 transmitting / receiving an information signal bidirectionally transmitted
via information connectors 11B and 11B ', and processing by taking data from the information
signal received by communication transmission unit 32 And from the extended function module
10 to the basic function module 8 or another extended function module 10, or information The
operation processing unit 33 performs data generation processing in the case of sending data via
L2 and the function unit 35 that operates by exchanging data with the operation processing unit
33 via the I / O interface 34. These units are supplied with operating power + V from the AC / DC
04-05-2019
22
converter 31.
The configuration of the functional unit 35 differs depending on the extended function module
10.
[0080]
The extended function module 10 is basically standardized in the height dimension of the module
body 10A to the same height dimension as the basic function module 8 as shown in FIG. Is
standardized to an integral multiple of unit module dimensions.
[0081]
Also, one side of the both sides of the flat module main body 10A made of synthetic resin (noncrystalline general purpose plastic such as ABS) has a male power connector 11A and an
information connector 11B on the other side, and a female power connector on the other side. A
connector 11A 'and an information connector 11B' are provided.
The power supply connectors 11A and 11A 'are disposed to be biased to one end on both side
surfaces of the module body 10A, and the information connectors 11B and 11B' are biased to the
other end on both side surfaces of the module body 10A. Be placed. The power supply
connectors 11A and 11A 'and the information connectors 11B and 11B' are, like the power
supply connectors 9A and 9A 'and the information connectors 9B and 9B' of the basic function
module 8, an array of contact portions inside and an opening The shape of the part is
standardized as a system, and the space between the power connector and the information
connector arranged on the same plane is also standardized as a system. The power connectors
9A and 9A 'of the basic function module 8 are standardized. The power connectors 11A and 11A
'and the information connectors 11B and 11B' of the information connectors 9B and 9B 'or other
extended function modules 10 are detachably coupled.
[0082]
Specifically, the male power connector 11A and the information connector 11B are female type
of the power connector 9A 'of the basic function module 8, the connector 9B' of the information
connector, or the female type of the other extended function module 10. The power connector
11A 'and the information connector 11B' are connected, and the female power connector 11A
'and the information connector 11B' are the male power connector 9A of the basic function
04-05-2019
23
module 8, the information connector 9B, or The male power supply connector 11A and the
information connector 11B of another extended function module 10 are connected.
[0083]
Then, the contact pieces of the power connectors 11A and 11A 'are connected to each other in
the module body 10A, and the power connector of one side is engaged with the power connector
of the basic function module 8 or the extended function module 10 adjacent to each other. When
the power supply side (power receiving port) is selected, the other power supply connector is the
power supply side (power supply port).
[0084]
Furthermore, by connecting the input and output of the communication transmission unit 32 to
the contact pieces of the information connectors (information transfer ports) 11B and 11B ', the
basic function module 8 and other extended function modules 10 are connected in either left or
right direction. Even if the information signal is exchanged, the information signal can be
exchanged with the basic function module 8 or the extended function module 10 adjacent to
both sides.
[0085]
Further, the shape of the module main body 10A of the extended function module 10 is formed
so that the back surface is flat as shown in FIGS. 20 (b) and 20 (c) so as to be along the wall
surface.
At the upper and lower positions, a connecting groove 81 including a wide groove 81a and a
narrow groove 81b for inserting the connecting body 100 as in the basic functional module 8 is
provided, and a lid for opening and closing the connecting groove 81 The lid 83 is opened when
attaching or detaching the connector 100, and is closed as described above when holding the
connector 100 in the attached state (FIG. 20 (c (c)). )reference).
[0086]
Next, the communication device 10a of the present embodiment, which is one form of the
extended function module 10, will be described.
04-05-2019
24
As shown in FIG. 22 and FIG. 23, like the extended function module 10, the communication
device 10a includes AC / DC converter 31, communication transmission unit 32, operation
processing unit 33, I / O interface 34, and function unit 35 as modules. The power supply
connector 11A and the information connector 11B are housed on one side of the both sides of
the module body 10A, and the female power connector 11A 'and the information connector 11B'
on the other side. It is provided.
[0087]
A plurality of sound holes 10B are formed in the front of the module main body 10A, and the call
switch SW1 and the alarm release switch SW2 are exposed on the front.
[0088]
In the module main body 10A, as shown in FIG. 23, the speaker SP, the microphone M1 (first
microphone), the microphone M2 (second microphone), the call switch SW1, the alarm
cancellation switch SW2, and the communication unit 35a, echo cancellation units 35b and 35c,
amplification unit 35d, and signal processing unit 35e, which have the same functions as the
communication device A of the first embodiment, and the arrangement of the speakers SP and
microphones M1 and M2 are also the same as the first embodiment. This prevents howling
caused by the microphones M1 and M2 picking up the audio output of the speaker SP.
[0089]
Also, when an alarm signal is transmitted from the basic function module 8 or extended function
module 10 having a sensor function installed in the room in which the call apparatus 10a is
disposed, or from another room via the information line L2, Although an alarm sound is emitted
from the speaker SP, the alarm sound output can be canceled by operating the alarm release
switch SW2.
[0090]
Then, for example, as shown in FIG. 21, the basic function module 8b constituting the wall switch
for turning on / off the lighting apparatus is connected to the gate device 3 by exposing the
operation part of the operation switch SW3 on the front surface of the cosmetic cover 8B. In the
right side of the basic function module 8b, the time display unit 35g is exposed on the front
surface of the module main body 10A to connect the extended function module 10b having a
04-05-2019
25
clock function, and in the right side of the extended function module 10b By connecting, the
intercom function can be added to various functional devices such as a wall switch function and a
clock function.
Alternatively, a new extended function module 10b can be connected to the call device 10a
installed in advance.
[0091]
In this case, the power supply connector 11A 'and the information connector 11B' of the
extended function module 10b are installed on the ceiling surface, wall surface and floor surface
indoors and electrically connected to at least one system of wiring for transmitting power and
information signals. The power supply connector 11A and the information connector 11B of the
communication apparatus 10a correspond to the connected first connection section, receive
power supply from the first connection section, and transmit an information signal to the first
connection section. It corresponds to a second connection for delivering and receiving.
Furthermore, when an extended function module (not shown) having a predetermined function is
connected to the right side of the handset 10a, the power connector 11A 'and the information
connector 11B' of the handset 10a supply power to the extended function module, It corresponds
to a third connection unit for exchanging information signals with the extended function module.
[0092]
Therefore, the communication device 10a is connected to the power line L1 and the information
line L2 wired in advance in the same manner through the gate device 3, the basic function
module 8 and the other extended function module 10, thereby connecting the power path and
the information path. At the same time, there is no need to carry out wiring work anew and the
construction is excellent.
In addition, by using the same information line L2 as the basic function module 8 and the other
extended function modules 10, interlock control between the communication device 10a and the
basic function module 8 and the other extended function modules 10 can be easily performed.
And it is excellent in extensibility.
04-05-2019
26
[0093]
Next, the communication device 8a of the present embodiment, which is one form of the basic
function module 8, will be described.
As the functional unit 25 of the basic function module 8, as shown in FIGS. 24 and 25, a speaker
SP, a microphone M1 (first microphone), a microphone M2 (second microphone), a call switch
SW1, an alarm release switch SW2, If the communication unit 35a, the echo cancellation units
35b and 35c, the amplification unit 35d, and the signal processing unit 35e are provided, the
communication device 8a having the same function as the above-described communication
device 10a is configured.
[0094]
A plurality of sound holes 8C are formed in the front of the module main body 8A, and the call
switch SW1 and the alarm release switch SW2 are exposed on the front.
[0095]
Then, the communication device 8a can be used alone as a basic function module, and further, if
necessary, the expansion function module 10 is connected to the side through the power
connectors 9A and 9A 'and the information connectors 9B and 9B'. do it.
In this case, at least one system of wiring which is installed on the ceiling surface, wall surface
and floor surface indoors and which transmits power and information signals, the connection
port 6 including the power path connection port 6A of the gate device 3 and the information
path connection port 6B. The connector 7 corresponding to the first connection portion
electrically connected to the connector 7 and including the connected portion 7A of the
communication apparatus 8a and the connected portion 7B receives power supply from the first
connection portion, and the first connection is established. It corresponds to a second connection
unit for exchanging information signals with the unit. Furthermore, if an extended function
module (not shown) having a predetermined function is connected to the right side or left side of
the handset 8a, the power connectors 9A, 9A 'and the information connectors 9B, 9B' of the
handset 8a have extended functions. It corresponds to a third connection for supplying power to
04-05-2019
27
the module and exchanging information signals with the extended function module.
[0096]
Therefore, by connecting the telephone set 8a to the power line L1 and the information line L2
wired in advance through the gate device 3, the power path and the information path can be
secured simultaneously, and wiring work needs to be newly performed. There is no, it is excellent
in construction. Further, by using the same information line L2 as the other basic function
module 8 and the extended function module 10, interlock control between the communication
device 8a and the other basic function module 8 and the extended function module 10 can be
easily performed. And it is excellent in extensibility.
[0097]
As the basic function module 8, there are one having an outlet function, one having a monitor
function, one having only a speaker function, and the like other than the above.
[0098]
In addition to the above, the extended function module 10 includes an air conditioner operation
controller, an air conditioner temperature setting device, an electric razor using an electric power
supply, an electric toothbrush, a charger such as a portable audio player, a lighting fixture and an
air conditioner. There are those with remote control infrared rays, etc.
In addition to audio information, there are also interphone masters and handsets of intercoms
that have the function of transmitting video captured by a surveillance camera or the like, and
the function of monitoring video.
[0099]
In addition, as a transmission method of the information signal of the wiring system using the
functional device of the present invention, any of baseband transmission or broadband
transmission may be adopted, and any protocol may be used, but an interphone using voice,
video, etc. Audio and video are mutually transmitted based on the H.-H. 232 packet between the
04-05-2019
28
master and slave units of the unit, and in the control system, one or more pairs can be operated
by operation data from the operation side. A routing control protocol corresponding to unicast or
broadcast which can correspond to 1 or 1 to N may be adopted, and the description is omitted
because it is not particularly limited. Also, the protocol used between the gate devices 3 and the
protocol used by the functional modules 8 and 10 connected to the gate device 3 may be made
different, and for example, the gate device 3 may perform protocol conversion.
[0100]
In order to use the basic functional module 8 constituting the functional device, first, the gate
device 3 is attached to the switch box 2 embedded in advance in the wall of the appropriate place
of the building via the mounting frame 4 and wired in advance. The power line L1 and the
information line L2 are connected. Thereafter, the corresponding connection portions 7A and 7B
of the connector 7 of the basic function module 8 are connected to the electric wire connection
ports 6A and 6B provided on the front surface of the gate device 3, and the basic function
module 8 is gated It is attached to the mounting frame 4 so as to cover the front face of 3. In this
mounted state, the basic function module 8 has a front surface projecting beyond the wall
surface, and both side surfaces are exposed to the indoor side.
[0101]
Then, the extended function module 10 causes one side to be interviewed and connected to one
of the exposed both side surfaces of the basic function module 8, and in this state the extended
function module 10 and the basic function module 8 are connected using the connector 100.
Mechanically connect. As a result, a functional device is configured by the basic function module
8 and the extended function module 10. At this time, the back surface of the extended function
module 10 is along the side wall of the switch box 2. For example, when the wall is attached to
the wall, the position of the back surface of the extended function module 10 is slightly shifted. It
can be disposed in a state in which the back surface is in close contact with the wall, and even if
an operating force or the like is applied from the front surface of the extended function module
10, the load applied to the connection portion can be reduced.
[0102]
Furthermore, when another extended function module 10 is connected to the extended function
04-05-2019
29
module 10 connected earlier, the opposite sides are interviewed and mechanically connected to
each other by the connecting body 100 in a state of being connected by a connector. Thus, as
shown in FIG. 21, the extended function modules 10 (10a, 10b. ) Can be connected sideways.
[0103]
In addition, since the basic function module 8 can connect the extended function modules 10 on
both sides, the extended function modules 10 may be connected in both directions of the basic
function module 8. Thus, after connecting the extended function module 10, the end cover 101 is
detachably attached to the side of the connection part of the extended function module 10 or the
basic function module 8 located at both ends, thereby the extended function module 10
Connection construction of will be completed. The end cover 101 is attached to both sides of the
basic function module 8 when the extended function module 9 is not connected to the basic
function module 8, that is, when it is left unused.
[0104]
And, the frame composed of the cover 83 provided on the upper side and the lower side of the
cosmetic cover 8B of the basic function module 8, the upper side and the lower side of the
extended function module 10 (including the call apparatus 10a) and the end cover 101 The
switch has a substantially similar shape to the standardized wide handle type switch plate (JIS
8316), and a sense of unity with the already installed wide handle type switch and the like can be
obtained. The shape of the frame is not limited to the shape of the wide handle type switch plate,
and if it is substantially the same shape as the plate used for the wiring connector for a square
continuous wire standardized by JIS, the existing outlet It is possible to obtain a sense of unity
with the embedded wiring device such as
[0105]
In addition, the dimensions of the basic function module 8 and the extended function module 10
in the width direction and height direction are the plates used in the wiring apparatus for large
square connection standardized in JIS, with the end cover 101 attached on both sides. Since they
are formed to have the same dimensions, and the thickness dimensions of the basic function
module 8 and the extension function module 10 are respectively formed to the same dimensions,
another basic function module 8 and the extension function module 10 may be installed after
installation. It can be easily replaced.
04-05-2019
30
[0106]
Further, the number of extension function modules 10 that can be connected to the basic
function module 8 is limited by the magnitude of the load applied to the connection site, and is
also limited by the power supply capacity of the basic function module 8.
[0107]
Here, for example, as shown in FIG. 12, a gate device of the switch box 2 provided at a high
position HP such as a ceiling surface of a room among the one or more switch boxes 2 embedded
in an appropriate place in the building. A basic function module 8 having a hooking blade
connection portion 60 is connected to 3, and the basic function module 8 is connected to an
extended function module 9 provided with a human sensor 61 or the like, or the gate device 3 A
basic functional module 8c having only the speaker SP and having a function for BGM, etc. is
connected.
[0108]
A basic function module 8b constituting a wall switch for turning on / off a lighting fixture on the
gate device 3 of the switch box 2 provided at a height position (middle position MP) such as a
wall surface of a room recommended for a wall switch etc. , An extension function module 10b
having a clock function, and a calling device 10a are connected.
Alternatively, a basic functional module 8 provided with a monitoring device 64 is connected to
the gate device 3 of the switch box 2 at the middle position MP.
[0109]
Further, a basic functional module 8 having a power outlet 62 is connected to the gate device 3
of the switch box 2 provided near the foot including the floor (low position LP), and an extended
functional module constituting the foot lamp 63 10 are connected, or a basic functional module
8c having only the speaker SP and having a function for BGM etc. is connected to the gate
apparatus 3.
[0110]
As described above, after the installation and construction are completed and the system is
completed, information signals are exchanged between the corresponding basic function module
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31
8 and the extended function module 10, and in the case of the communication devices 8a and
10a, other rooms The interphone system is configured between the telephone set 8a and 10a to
enable communication between the two and to perform alarm notification and the like.
[0111]
Further, in the present embodiment, no special construction is required for addition or deletion
of the extended function module 10 or the basic function module 8, and therefore, simply by
connecting the extended function module 10 to the basic function module 8 according to the
general user's preference, Scalability is secured.
[0112]
Although the gate device 3 used in the present embodiment is attached to the switch box 2 by
the attachment frame 4, it may be directly attached to the back wall of the switch box 2 and the
basic function module 8 may be attached to the switch box 2.
[0113]
(Fifth Embodiment) In the fourth embodiment, the power path and the information path by
connector connection among the gate device 3, the basic function module 8 (including the
communication device 8a), and the extended function module 10 (including the communication
device 10a). Is being built.
[0114]
However, in the present embodiment, instead of the connector connection, power is supplied
contactlessly by magnetic coupling to configure a power path.
Specifically, each of the gate device 3, the basic function module 8, and the extension function
module 10 has a configuration in which a coil is wound around a core instead of a connector, and
the cores are magnetically coupled to each other to cause low voltage to the opposing coil. AC
power supply voltage is induced to supply power.
Here, by applying an AC power supply having a frequency higher than that of the commercial
frequency to the coil, it is possible to miniaturize the transformer configuration by the
electromagnetic coupling unit.
04-05-2019
32
[0115]
Furthermore, in the gate device 3, the basic function module 8, and the extended function
module 10, the information signal is sent out through E / O conversion, and the information
signal is taken in through O / E conversion, whereby the information signal composed of the light
signal is emitted By using the light receiving element, an information path can be established
which can be transmitted in both directions without contact.
[0116]
(Sixth Embodiment) In the fourth and fifth embodiments, sending of power (power) and delivery
of information signal are performed in separate systems, but in the present embodiment, the
transmission method of information signal of the whole system is a power line carrier. By doing
this, sharing of the power path and the information path is achieved.
[0117]
In other words, the preceding wiring in each switch box 2 is only the power line L1, and
correspondingly the connection port of the gate device 3 is only the power path connection port
6A of the connection port shown in FIG. The connector 7 (including the communication device
8a) also has only the connection port 7A corresponding to the power path connection port 6A,
and the information connectors 9B and 9B 'are also omitted.
Further, the information connectors 11B and 11B 'are also omitted in the extended function
module 10 (including the call apparatus 10a).
[0118]
Then, as shown in FIG. 26, in the communication device 10a, a PLC modem unit 36 for receiving
an information signal by power line carrier and transmitting an information signal, and an
information signal received via the PLC modem unit 36. Provided between the functional unit 35,
the functional unit 35, and the arithmetic processing unit 33, which performs data processing of
the above and generates data of an information signal to be transmitted by power line
conveyance via the PLC modem unit 36. An I / O interface 34 is provided.
04-05-2019
33
The arithmetic processing unit 33, the I / O interface 34, and the function unit 35 have the same
functions as those in the fourth and fifth embodiments.
[0119]
Furthermore, the same configuration as that of the PLC modem unit 36 is also provided to the
gate device 3, the basic function module 8, and the extended function module 10.
[0120]
The modulation method of power line carrier employed in the present embodiment may be any
of various methods such as a wide band spread spectrum method, a multicarrier method, and an
OFDM method, and therefore, will not be particularly described here.
[0121]
In the present embodiment, since the power path and the information path are common, the
connection port of the gate device 3 is only the power path connection port 6A, and the
connector 7 of the basic function module 8 also has one connected portion 7A. Since the
connector 11 of the extended function module 10 is also only one connected portion 11A, the
space of the configuration around the connection is reduced.
In addition, the internal circuits of the basic function module 8 and the extended function module
10 do not require the configuration of the communication transmission unit and the information
connector, so that the arrangement space in the thin module bodies 8A and 10A can be spared.
[0122]
In addition, by incorporating the PLC modem unit in the lighting fixtures and air conditioning
equipment, direct information signals can be sent to the lighting fixtures and air conditioning
equipment, so it is necessary to provide a functional module with an infrared remote control
signal transmission function for remote control. There is no
[0123]
04-05-2019
34
(A) and (b) It is sectional drawing which shows the attachment state of the speaker of the
communication apparatus of Embodiment 1, and a microphone.
FIG.
It is a circuit block diagram same as the above.
(A) (b) It is a block diagram of the acoustic signal-electric signal conversion part of the
microphone same as the above.
It is a circuit block diagram of the microphone same as the above.
It is a circuit block diagram of the signal processing part same as the above.
(A) (b) It is a signal waveform diagram of a signal processing part same as the above.
(A) (b) It is a signal waveform diagram of a signal processing part same as the above. (A) (b) It is a
signal waveform diagram of a signal processing part same as the above. (A) (b) (c) It is a signal
waveform diagram of the signal processing part same as the above. FIG. 7 is a configuration
diagram of a microphone of Embodiment 3; FIG. 14 is a configuration diagram of a wiring system
using the communication device of the fourth embodiment. It is a front view of the state which
attached the same gate apparatus to the attachment frame. It is a perspective view which shows
the wiring form to the gate apparatus same as the above. It is a perspective view of the state
which removed the basic function module same as the above from the switch box. (A) is a
perspective view of the state which removed the cosmetic cover of the basic functional module
same as the above, (b) is a perspective view of a connection body. It is explanatory drawing of the
connection structure of the basic function module same as the above and an extension module. It
is a circuit block diagram of the basic functional module same as the above. It is a circuit block
diagram of the extended function module same as the above. The extended function module
same as the above is shown, (a) is a front view, (b) is a side view, (c) is a side view in a state in
which the cover is opened and the coupling body is removed. It is the partially broken
perspective view which shows the installation state of the wiring system using the telephone
apparatus (extended function module) same as the above. It is a perspective view which shows a
telephone apparatus (extended function module) same as the above. It is a circuit block diagram
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of the communication apparatus same as the above (extended function module). It is a circuit
block diagram of the function part of the telephone apparatus (basic function module) same as
the above. It is a perspective view which shows the installation state of the wiring system using
the telephone apparatus (basic function module) same as the above. FIG. 16 is a circuit
configuration diagram of the communication device of the sixth embodiment. (A) (b) It is the
schematic of the conventional communication apparatus.
Explanation of sign
[0124]
A Intercom A1 Casing SP Speaker M1, M2 Microphone 35e Signal processing unit 53c Vibration
part 74 Diaphragm
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36
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