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JPS61224800

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DESCRIPTION JPS61224800
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
microphone with a control member, and more particularly to a microphone with a control
member for use in a wireless communication device. [Technical background of the invention and
its problems] As shown in FIG. 1, the microphone 1 with an operating member is equipped with
an electronic microphone 2 and a speaker 3, and as an operating member, a PTT switch, a touch
4, an up button 5, a down button 6 is provided. The wireless communication device 10 is
provided with a microphone jack or Jo, and the wireless communication device 10 is connected
to the operation member-equipped microphone by the plug Pn (n indicates the number of
connector pins) of the connection code r7. The connection cord 7 is provided with a control line
related to the operation member in addition to the transmission line related to transmission and
reception. The control line may be provided with function keys such as a reset button (not
shown) in addition to the up chain 5 and the down button 6 for automatically scanning the
frequency. In this case, the core of the connection cord 7 is the transmission / reception
transmission path plus the control line, and the microphone jack Jn has the number of
connection pins corresponding to the plug Pn. The number of connection pins and the
arrangement of the microphone jacks Jn are determined by the function of the wireless
communication device 10. A microphone with an operating member is optionally provided.
Therefore, in consideration of the compatibility of the microphones with operating members, it is
desirable to advance the standardization of the arrangement. Also, the maximum allowable
number of core wires should be as small as possible for mass produced wireless communication
devices. In the drawing, reference numeral 11 denotes a display member, and 12 denotes an
operation member. SUMMARY OF THE INVENTION The present invention has been made in view
of the above-described point, and an operation which reduces the number of cores of a
connection cord with a wireless communication device and facilitates stacking of connector bin
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arrays. An object of the present invention is to provide a microphone with a member. [Summary
of the Invention] According to the present invention, the transmission line on the reception side
and the transmission line on the transmission side between the microphone with the operation
member and the wireless communication device are configured such that DC signals can be
superimposed by circuit elements such as a capacitor and a resistor. A transmission line related
to an alternating current signal can be obtained as a pair of legs. DETAILED DESCRIPTION OF
THE PREFERRED EMBODIMENTS An embodiment of a microphone with an operation member
according to the present invention will be described in detail below with reference to the
drawings. In FIG. 2, C1 "" C4 is a DC blocking capacitor. The DC blocking capacitor 01eC3 is a
transmission side transmission path leading to the microphone 2, the cord terminal 7a, the core
wire of the connection cord 7, the plug P0, the microphone jack of the wireless communication
device 10, and the% microphone amplifier 20 The output side of the microphone 2 and the input
side of the microphone amplifier 20 are connected in series. The DC blocking capacitors C4 and
C3 are the AF amplifier 17 of the wireless communication device 10, the microphone jack J1, the
core of the plug P 1 s connection cord 7, the co V terminal 7b, and the AP amplifier 17 of the
transmission path on the reception side leading to the speaker 3. And the input side of the
speaker 3 in series.
One end of each of the resistors 11 * R1 is a microphone jack. The other end is connected to the
reference potential point and one end of the up button 5. One end of each of the resistors R1 and
R4 is connected to the cord terminal 7b and the microphone, respectively, and the other end is
connected to one end of the down button 6 and the reference potential point. The other ends of
the a, de button 5 and the down button 6 are connected to the cord terminal 7 c. Since one end
of PTT switch 4 is connected to the coil 18m of the antenna switching relay 18 via the cord wire
70% of the cord terminal 70% of the cord 7 of the connecting cord 7, the plug P3, the
microphone jack, J,% + Vcc appears on the code terminal 7c. The voltage of the code terminal 7 c
is used as a direct current signal source of the up chain 5 and the down button 6. The
microphone jar J is connected to the reference potential point, and becomes the reference
potential point of the operation member-equipped microphone 1 through the plug P1 and the
code terminal 7d. The reference potential point is connected to the other end of the microphone
2, the speaker 3 and the PTT switch 4. When UP button 5 or DOWN button 6 is pressed, the
other end of resistor R or R3 is connected to + VCC via fill 18a of antenna switching relay 18, and
one end of resistor R8 or resistor R4 changes from L level to H level. Form a DC signal. A direct
current signal related to the resistor R3 is sent out as a down signal to the terminal 13m by a
filter consisting of the resistor R6 and the capacitor c6. A DC signal related to the resistor R4 is
sent out as a hairtub signal of the terminal 13b via a filter consisting of the resistor R5 and the
capacitor aS. The outputs of the terminals 13m and 13b are input to the CPU 14 or the like to
perform frequency selection such as channel selection. When the PTT switch 4 is depressed, the
antenna switching relay 18 operates to be in the transmission state. At the same time, since + vcc
at the other end of the up chain 5 and the down button 6 becomes a reference potential point,
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pressing the up chain 5 and the down button 6 does not generate an up signal or a down signal.
The resistances of the resistors R1 to R4 and the capacitances of the DC blocking capacitors CI ′
′ ′ C4 have numerical values such that the audio signal and the DC signal do not mutually
prevent each other. Body elements may be used. The DC superposition means consisting of the
resistors R1 to R4 and the DC blocking capacitors 01 to C4 is not limited to the above
embodiment, and may be a DC superposition means using a circuit element such as a coil or a
semiconductor. The function key is not limited to the a, de button, and down button, and may be
replaced with another function key.
According to the present invention, the microphone with the operation member according to the
present invention comprises: the first transmission path for the speaker; the second transmission
path for the microphone; The present invention is characterized in that it comprises a DC signal
superimposing means for weighing a DC signal to the second transmission path, which is
characterized in that the transmission path is used as a control line. For this reason, it is possible
to give two meanings to one pin terminal, and the degree of freedom in the arrangement of the
pin terminals is increased, so that the standardization of the arrangement is facilitated. In
addition, the number of cores of the connection s-P can be reduced, and the miniaturization of
connectors such as connectors can be achieved.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a perspective view of a microphone with an operation member, and FIG. 2 is a circuit
diagram showing a part of the microphone with an operation member according to the present
invention.
In the figure, reference numeral 1 is a microphone with an operation member, 2 is a microphone,
3 is a speaker, 4 is a PTT switch, 5 is an a / de button, 6 is a down button, 7 is a connection cord,
7a to 7d are cord terminals, 10 is a wireless Communication device 11, 11 display member, 12
operation member, 13m, 13b terminals, 14 CPU, 15 antenna, 16 reception circuit, 17 AP
amplifier, 18 antenna switching relay, 19 transmission circuit, 20 The microphone amplifiers% C,
~ C6 are capacitors% Jo% J, the microphone jacks, p,% P, the plugs SR1 to R6 are resistors. Patent
Assignee Yaesu Radio Co., Ltd. No. 1 rpj No. 2 r 14
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