close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2006325168

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2006325168
PROBLEM TO BE SOLVED: To connect a telephone and a handset regardless of polarity when
connecting a handset using a polarized microphone to a telephone. Also, the microphone itself is
nonpolar. SOLUTION: Between the microphone input T1 and T2 terminals of the telephone main
body 10 and the T3 and T4 terminals of the handset 40a are connected by connection cables 20
and 21, and the polar condenser microphone 31b mounted on the printed circuit board 41 and
the polarity matching circuit 41a is connected in the printed circuit board, and the terminals T3
and T4 are connected by the connection cables 22a and 23a between the INA and INB terminals
of the polarity matching circuit 42a. The polarity matching circuit 42a constitutes a diode bridge.
The terminals T1 and T2 of the telephone set 10 can be connected to the terminals INA and INB
of the polarity matching circuit 42a regardless of the polarity. [Selected figure] Figure 1
Voice input processing device and nonpolar microphone corresponding to polar microphone
[0001]
The present invention relates to an audio input processing device including an audio input unit to
which a microphone having a polarity such as a condenser microphone is applied and an audio
processing unit connected to the audio input unit by cable. Specifically, the present invention is
applicable to a telephone, an audio device, and the like.
[0002]
10-04-2019
1
Since the condenser microphone applies a DC bias voltage, the input terminal of the condenser
microphone has a polarity, and it is necessary to supply a bias voltage of the correct polarity to
the microphone unit (for example, see Patent Document 1). If you make a mistake, it will not
function properly as a handset. In order to prevent this polarity error, a polarity marking is
usually provided.
[0003]
FIG. 3 is a diagram showing the configuration of a conventional handset 30 in a telephone and
connection with the telephone main body 10. As shown in FIG. In order to clearly show the
microphone wires 20, 21, 22, 23, the receiver wires as handsets are omitted.
[0004]
In FIG. 3, the conventional handset 30 using the condenser microphone 31a connects the
positive terminal and the-terminal of the condenser microphone 31a from the microphone input
T1 and T2 terminals of the telephone body 10 through the T3 and T4 terminals of the handset
30. The connection cables 20, 21, 22, 23 need to be connected correctly. In the manufacturing
stage, in order to prevent this polarity error, the polarity is usually identified by color coding of
the connection cables 22 and 23, and the polarity confirmation operation is performed. Japanese
Patent Application Laid-Open No. 10-155234
[0005]
In the manufacturing process of the microphone having the conventional polarity, there is a
problem that the manufacturing cost becomes high because the polarity marking display is
required to prevent the polarity error.
[0006]
In addition, since the microphone has polarity, when connecting to an external device, it is
necessary to connect the polarity correctly. Since the polarity is identified by color coding of the
connecting cable and the polarity confirmation work is performed, there is a problem that the
working efficiency is poor .
10-04-2019
2
Further, even when the microphone is attached to a printed circuit board, it is necessary to carry
out a polarity confirmation operation.
[0007]
Next, taking a telephone having a handset as an example, the conventional handset using a
polarized microphone in the telephone has a problem that it can not be connected to the
telephone main body where the polarities of the wires of the microphones do not match. The
range of choices is narrow.
[0008]
In addition, when the handset is connected to a telephone set whose polarity does not match,
there is a problem that the handset does not function properly.
[0009]
In FIG. 3, in the manufacturing process of the conventional handset 30, when connecting the
connecting cables 22 and 23 connecting the + terminal and the-terminal of the condenser
microphone 31a from the T3 and T4 terminals of the handset 30, a polarity check occurs.
Therefore, there is a problem that the working efficiency is poor, and a manufacturing error of
the polarity error is likely to occur.
[0010]
Also, in order to prevent any manufacturing defects, the polarity is identified by color coding of
the connecting cables 22 and 23. However, there is a problem that the manufacturing cost of the
connecting cables 22 and 23 is increased by color coding.
[0011]
Similarly, in FIG. 3, when designing the telephone set main body 10 using the conventional
handset 30, the designer needs to design the telephone set main body 10 paying attention to the
polarity of the condenser microphone 31a, and the problem of poor work efficiency There is.
[0012]
The present invention has been made in view of the above-mentioned circumstances, and an
object of the present invention is to provide a more economical means for preventing polarity
errors.
10-04-2019
3
[0013]
In order to solve the above problems, the present invention comprises an audio input unit
including a polarized microphone having a polarity, and an audio processing unit connected to
the audio input unit by a cable and processing an audio signal from the polarized microphone. A
voice input processing apparatus, wherein a polarity matching circuit is inserted between the
connection terminal of the polarized microphone and the cable, or between the cable and the
voice input.
[0014]
Further, it is a polar microphone comprising an acoustic-electric conversion processor having a
polarity and a connection terminal connected to the acoustic-electric conversion processor and
connecting to an external device, wherein the acousto-electric converter and the connection
terminal And a polarity matching circuit is inserted between them.
[0015]
Further, in the voice input processing device and nonpolar microphone corresponding to the
polar microphone, the polarity matching circuit is a diode bridge, and a bypass capacitor for
passing a voice signal is provided at a predetermined portion of the diode bridge. I assume.
[0016]
In the voice input processing device and nonpolar microphone corresponding to the polar
microphone, the polarity matching circuit is a diode bridge, and a plurality of diodes are
connected in parallel to each diode of the diode bridge to attenuate the voice signal. Are provided
with means for reducing
[0017]
Although the conventional handset can not be connected to the telephone main body in which
the polarity of the microphone wiring between the handset and the telephone main body does
not match, the handset equipped with the polarity matching circuit of the present invention and
the polarity matching circuit are provided. In handsets that use a microphone, it is possible to
connect and eliminate polarity errors.
[0018]
This makes it possible to widen the selection of connectable telephone sets.
10-04-2019
4
[0019]
In the manufacturing process of the microphone provided with the polarity matching circuit, the
manufacturing cost can be reduced because there is no need for the polarity indication marking.
[0020]
FIG. 1 is a diagram showing the construction of a handset equipped with a polarity matching
circuit and the connection with a telephone set.
[0021]
In FIG. 1, in the manufacturing process of the handset 40a provided with the polarity matching
circuit 42a, the connection cables 22a and 23a connecting the INA and INB terminals of the
polarity matching circuit 42a from the T3 and T4 terminals of the handset 40a are manually
soldered. At the time of installation, there is no need to perform polarity confirmation work, and
the work efficiency is improved.
[0022]
In addition, since manufacturing defects due to polarity errors due to manual soldering are
eliminated, the need for color coding of the connecting cables 22a and 23a is eliminated, and
cable manufacturing costs can be reduced.
[0023]
Similarly, in FIG. 1, in the design process of the telephone main body 10 using the handset 40a
having the polarity matching circuit 42a, the designer can design the telephone main body 10
without having to pay attention to the polarity of the microphone wiring. There is no need to
worry about defects and work efficiency is improved.
[0024]
Similarly, in FIG. 1, in the handset 40a having the polarity matching circuit 42a, the capacitor
microphone 31b and the polarity matching circuit 42a are automatically mounted by mounting
the capacitor microphone 31b and the polarity matching circuit 42a on the printed circuit board
41 by the electronic component mounting apparatus. In addition, since the connecting cables 20,
21, 22a, 23a can be connected neglecting the polarity, the polarity error of the entire telephone
main body 10 using the handset 40a can be reduced. , Increase the manufacturing work
efficiency and design work efficiency.
10-04-2019
5
[0025]
FIG. 2 is a diagram showing the construction of a handset using a condenser microphone
provided with a polarity matching circuit and the connection with a telephone set.
[0026]
In FIG. 2, the handset 40b using the condenser microphone 50 provided with the polarity
matching circuit 51 can obtain the same effect as the case of FIG.
When the condenser microphone 50 is connected to an external voice input processor, the cables
20, 21, 22a, and 23a are not used, and even if they are directly attached to a printed circuit
board, they can be attached without checking the polarity.
[0027]
FIG. 4 is a view showing connection when connection cables 20 and 21 used in FIGS. 1 and 2 are
used as connection cables with both ends connectors.
[0028]
FIG. 5 is a view showing an arrangement of pin numbers and signal names of the double-ended
connector cable of FIG. 4, and (A) shows an appearance.
(B) The figure is a figure in case 1 pin and 4 pins are used as microphone wiring, and 2 pins and
3 pins are used as receiver wiring.
Also, (C) is the reverse of (B).
[0029]
10-04-2019
6
FIG. 6 is a diagram showing an arrangement of pin numbers and signal names when the
connector on one side of FIG. 5 is mounted in the reverse direction, and FIG.
(B) The figure is a figure in case 1 pin and 4 pins are used as microphone wiring, and 2 pins and
3 pins are used as receiver wiring.
Also, (C) is the reverse of (B).
[0030]
Here, the handset 70 and the telephone set body 10a shown in FIG. 4 are connected by the
connection cable 60 with both ends connector, and the arrangement of the cable 60 with both
ends connector is shown in FIGS. 5 (B) and 5 (C). By arranging them as shown in (B) and (C) in
FIG. 1 and unifying in either (B) or (C), both of the cables 60a and 60b with both-end connectors
can be used.
[0031]
This eliminates the need to consider the polarity when designing and manufacturing the
telephone set body 10a and the connection cable 60 with both ends connector and the handset
70, and eliminates the need to consider the connector orientation, thereby improving the
working efficiency.
[0032]
FIG. 7 shows the configuration of the polarity matching circuit.
[0033]
The polarity matching circuit 80a shown in FIG. 7 forms a diode bridge by D1, D2, D3 and D4.
Although the microphone input of the telephone main body is connected to the INA and INB
terminals, + polarity or-polarity can be connected to either of the INA and INB terminals.
Further, since the positive polarity is transmitted to the positive terminal 80a of the polarity
10-04-2019
7
matching circuit and the negative polarity is transmitted to the negative terminal, it can be
connected with the correct polarity to the polar microphone connected between the positive
terminal and the terminal.
[0034]
FIG. 8 shows a circuit configuration in which an AC bypass capacitor is added to the polarity
matching circuit of FIG.
Z1 and Z2 have a low impedance with respect to a direct current component, and also have a
high impedance with respect to an alternating current component of the audio frequency band,
and are mainly composed of a resistor and a coil.
C1 and C2 are non-polarizing capacitors for blocking the DC component and passing the AC
component of the audio frequency band.
[0035]
As shown in FIG. 8, C1, C2, Z1, and Z2 are provided at predetermined positions.
When a DC bias is applied between the INA and INB terminals, it passes through Z1 and Z2,
passes through each diode, and is transmitted to the + and-terminals of the polarity matching
circuit.
At this time, the DC component does not pass through C1 and C2.
Further, when a DC bias is applied to the microphone connected between the + and-terminals, the
audio signal is superimposed on the DC.
This audio signal bypasses C1 and C2 and is transmitted to the INA and INB terminals.
10-04-2019
8
At this time, an audio signal does not pass through each diode by Z1 and Z2.
Therefore, it is possible to prevent the attenuation of the audio signal by the diode.
[0036]
FIG. 9 shows a configuration in which another diode is added in parallel to each diode of the
polarity matching circuit of FIG.
[0037]
The diodes are connected in parallel by adding D5, D6, D7 and D8 in parallel as shown in FIG.
When connected in parallel, the forward current of each diode is halved, and the forward voltage
of the diodes is also reduced.
By reducing this forward voltage, it is possible to reduce the voltage drop of the direct current
component and to prevent the attenuation of the signal level of the alternating current
component accordingly.
[0038]
Although FIG. 9 shows the case of two parallel connection of each diode, attenuation of the signal
level of the alternating current component can be further prevented by connecting not only two
parallel but a plurality of parallel connections.
[0039]
FIG. 1 is a diagram showing the construction of a handset 40a provided with a polarity matching
circuit 42a according to the present invention and the connection with a telephone set 10. As
shown in FIG.
10-04-2019
9
Connection cables 20 and 21 are connected between microphone input T1 and T2 terminals to
T3 and T4 terminals of handset 40a, and connection cables 22a and 23a are manually connected
between T3 and T4 terminals to INA and INB terminals of polarity matching circuit 42a.
Connected by soldering.
The polarity matching circuit 42a and the condenser microphone 31b are mounted on the
printed circuit board 41, and the connection is connected within the printed circuit board.
The mounting method to a printed circuit board shall be automatically mounted with an
electronic component mounting apparatus.
The internal configuration of the polarity matching circuit 42a used for the handset 40a is as
shown in FIGS. 7, 8 and 9, and will be described later.
[0040]
FIG. 2 is a diagram showing the configuration of the condenser microphone 50 provided with the
polarity matching circuit 51 of the present invention and the connection with the telephone main
body 10. As shown in FIG.
Connection between terminals T3 and T4 of handset 40b from microphone inputs T1 and T2 is
connected by connection cables 20 and 21. Connection between terminals T3 and T4 to
condenser microphone INC and IND is connected manually by connection cables 22a and 23a. It
is connected by
The condenser microphone 50 is composed of a polarity matching circuit 51, a microphone unit
52, terminals INC and IND, and INC and INA, IND and INB are internally wired.
The internal configuration of the polarity matching circuit 51 used for the condenser microphone
50 is as shown in FIG. 7, FIG. 8 and FIG. 9, and will be described later.
[0041]
10-04-2019
10
Further, in FIG. 2, when connecting the condenser microphone 50 to an audio input processing
device such as a telephone, the cable 20, 21, 22a, 23a is not used, and even when mounted
directly on a printed circuit board, mounting is not performed. It is possible.
[0042]
The connection cables 20 and 21 in FIG. 1 and FIG. 2 illustrate the microphone wiring in an easyto-understand manner, so the receiver wiring as a receiver is omitted.
The actual forms of the connection cables 20 and 21 are shown in FIGS. 4, 5 and 6 and will be
described later.
[0043]
FIG. 4 shows the actual form of the connecting cables 20, 21 of FIGS.
When this connection cable 60 is used, the connector 61 is connected to the connector 11a of
the telephone main body 10a. The connector 62 at the other end is connected to the connector
71 of the handset 70. The connector 11a corresponds to the terminals T1 and T2 in FIGS. 1 and
2, and the connector 71 corresponds to the terminals T3 and T4 in FIGS. 1 and 2. Therefore, the
connection destination of the connector 71 (the connection destination of T3 and T4) Is shown in
FIG. 1 and FIG. Further, the mounting direction and arrangement of the connectors of the
connection cable 60 are shown in FIGS.
[0044]
FIG. 5 shows the mounting orientation and arrangement of the connectors of the connection
cable with both ends connector used in FIG. (A) The figure shows the direction of the connector.
The connectors 61a and 62a have the same orientation. The (B) and (C) figures show the
arrangement pattern, and it is unified to either (B) or (C) and used.
[0045]
10-04-2019
11
FIG. 6 shows a pattern reverse to that of FIG. (A) The figure shows the direction of the connector.
Connectors 61b and 62b are in the opposite direction. The (B) and (C) figures show the
arrangement pattern, and it is unified to either (B) or (C) and used.
[0046]
By unifying (B) or (C) in FIGS. 5 and 6, both connection cables 60a and 60b with connectors on
both ends can be used.
[0047]
Although FIG. 4, FIG. 5 and FIG. 6 have been described by taking the cable with both ends
connector as an example, the present invention is not limited to this, and the cable with one side
connector and the cable without connector are also shown in FIG. 5 (B) and (C). The same effect
can be obtained by arranging the arrays as shown in (B) and (C) and unifying them into either (B)
or (C).
[0048]
FIG. 7 is a diagram showing an internal configuration of the polarity matching circuit 80a.
A diode bridge is constituted by D1, D2, D3 and D4.
The INA and INB terminals are applied with a DC bias from the telephone main body. Although
the microphone input of the telephone main body is connected to the INA and INB terminals, +
polarity or-polarity can be connected to either of the INA and INB terminals. Further, since the
positive polarity is transmitted to the positive terminal 80a of the polarity matching circuit and
the negative polarity is transmitted to the negative terminal, it can be connected with the correct
polarity to the polar microphone connected between the positive terminal and the terminal.
When a DC bias is applied to the condenser microphone from the positive and negative terminals
of the polarity matching circuit 80a, the audio signal from the condenser microphone passes
through the diode in the forward direction in a form superimposed on the DC, and the INA and
INB terminals Transmitted to In the diode used here, as the forward voltage is lower, the voltage
drop of the DC component can be reduced, and the attenuation of the audio signal level can be
reduced accordingly. Also, when a reverse voltage is applied, the diode has a small capacitance
10-04-2019
12
value, but the smaller the capacitance, the higher the impedance in the audio frequency band.
Therefore, use a diode with a smaller capacitance at the reverse voltage. This can further
suppress the attenuation of the audio signal. Also, since the diode has a very small reverse
leakage current when the reverse voltage is applied, the use of a diode with a small reverse
leakage current can further suppress the attenuation of the audio signal.
[0049]
FIG. 8 shows a configuration of a polarity matching circuit 80b in which AC bypass capacitors C1
and C2 are added to the polarity matching circuit of FIG. As shown in FIG. 8, C1, C2, Z1, and Z2
are provided at predetermined portions, and Z1 and Z2 have low impedance with respect to
direct current components, and also have high impedance with respect to alternating current
components in audio frequency band. An AC circuit consisting of resistors and coils. C1 and C2
are non-polarizing capacitors for blocking the DC component and passing the AC component of
the audio frequency band. When a DC bias is applied between the INA and INB terminals, it
passes through Z1 and Z2, passes through each diode, and is transmitted to the + and-terminals
of the polarity matching circuit. At this time, the DC component does not pass through C1 and
C2. Further, when a DC bias is applied to the microphone connected between the + and-terminals,
the audio signal is superimposed on the DC. This audio signal bypasses C1 and C2 and is
transmitted to the INA and INB terminals. At this time, an audio signal does not pass through
each diode by Z1 and Z2. Therefore, it is possible to prevent the attenuation of the audio signal
by the diode.
[0050]
In addition, Z1 and Z2 cause an AC short between the INA and INB terminals and between the +
terminal and the terminals due to C1 and C2 when a DC bias of + polarity is applied to the INB
terminal and-polarity is applied to the INA terminal. To prevent
[0051]
FIG. 9 shows a configuration in which another diode is added in parallel to each diode of the
polarity matching circuit of FIG.
The diodes are connected in parallel by adding D5, D6, D7 and D8 as shown in FIG. When
connected in parallel, the forward current of each diode is halved, and the forward voltage of the
10-04-2019
13
diodes is also reduced. The diode also the same forward voltage either diode because it is
connected in parallel. By reducing the forward voltage, it is possible to reduce the power loss due
to the diode and prevent the attenuation of the signal level of not only the DC component but
also the AC component. Further, the larger the signal level of the AC component to be handled,
the larger the amount of attenuation. Therefore, the use of this diode parallel connection system
provides a great effect. Similarly, the larger the bias current to be handled, the larger the forward
voltage and the larger the power loss. Therefore, the amount of attenuation of both the DC
component and the AC component is large, so that adopting this method provides a great effect.
[0052]
Although FIG. 9 shows the case of two parallel connection of diodes, attenuation of the signal
level of the alternating current component can be further prevented by connecting not only two
parallel but a plurality of parallel connection. However, when connected in parallel, the
capacitance value of the diode to which the reverse voltage is applied is also increased by being
paralleled, so the total value of the capacitances needs to be high impedance in the audio
frequency band .
[0053]
Although the telephone having a handset has been described above as an example of the present
invention, the present invention is not limited thereto. For example, a mobile telephone, an audio
apparatus, a karaoke apparatus, a communication conference apparatus, etc. The present
invention is applicable to general equipment for connecting the main body and cables, and
general equipment for mounting a microphone on a printed circuit board.
[0054]
The figure which shows the structure of a handset provided with the polarity matching circuit of
the present invention and the connection with the telephone main body The figure showing the
configuration of the handset using a condenser microphone provided with the polarity matching
circuit according to the present invention and the connection with the telephone main body
Diagram showing the configuration of the handset and connection with the telephone main body
Connection diagram of the connection cable with both ends connector Diagram showing the
appearance and arrangement of the connection cable with both ends connector Diagram and
appearance of the reverse connector type of connection cable with both ends connector Diagram
of Polarity matching circuit shown Diagram of Polarity matching circuit with bypass capacitor
Diagram of Polarity matching circuit of diode parallel connection method
10-04-2019
14
Explanation of sign
[0055]
10, 10a Telephone main body 11a Connector of telephone main body 20, 21 Connection cable
between telephone and handset 22, 23 Color-coded connection cable 22a, 23a Connection cable
30 Transmitter / receiver 31a, 31b Condenser microphone 40a, 40b With polarity matching
circuit Handset 41 Printed circuit board 42a Polarity matching circuit 50 Condenser microphone
provided with polarity matching circuit 51 Polarity matching circuit 52 Microphone section of
capacitor microphone 60, 60a, 60b Connection cable with both ends connector connection cable
61, 61a, 61b, 62, 62a, 62b Connector 70 Handset 71 Handset connector 80a Polarity matching
circuit 80b Polarity matching circuit with bypass capacitor 80c Diode parallel type polarity
matching circuit C1, C2 Capacitor D1, D2 D3, D4, D5, D6, D7, D8 Diode INA, IN Input Terminal of
IN Polarity Match Circuit INC, IND Terminal of Condenser Microphone with Polarity Match
Circuit T1, T2 Microphone Input Terminal of Telephone Body T3, T4 Microphone of the handset
Wiring terminal Z1, Z2 AC interrupt circuit
10-04-2019
15
Документ
Категория
Без категории
Просмотров
0
Размер файла
25 Кб
Теги
jp2006325168, description
1/--страниц
Пожаловаться на содержимое документа