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JPS5711882

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DESCRIPTION JPS5711882
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of
the headphone device of the present invention, FIG. 2 is a block diagram showing an embodiment
of the present invention, and FIG. 3 uses the headphone device. FIG. 4 is a block diagram showing
an example of an audio device, and FIG. 4 is a block diagram showing another embodiment of the
present invention. 1R is a right side headphone unit, 1'L is a left side headphone unit, 2R and 2L
are voice coils respectively, 3R is a right side input code, 3L is a left side input code, 4 is a plug,
4a is a right audio signal input terminal, 4b is A common terminal 4c is a left audio signal input
terminal, 5 is a branch, 6R and 6L are resistors, 7 is a muting push button switch, and 7R and 7L
are connection switches.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headphone
apparatus suitable for use in audio equipment. Generally, while listening to music using a
headphone device, if you notice that someone is talking to you, you should either remove it or
leave it attached each time It is necessary for the user to go to the installation position of the
audio device placed at a predetermined distance through the input code and the user, and
operate the muting switch of the audio channel of the audio device. The inconvenience is
accompanied by bothersomeness and that the caster can not respond. , S> +1)! In view of the
foregoing, it is an object of the present invention to provide a nine-headphone device which can
perform muting operation immediately and can respond immediately to a headphone attached.
An embodiment of the present invention will be described with reference to FIGS. 1 and 2 below.
In FIGS. 1 and 2, (IB) and (IL) indicate the right headphone unit and the left headphone unit,
respectively. One end of the voice coil (2R) of the right headphone unit (IR) is connected to the
right voice signal input terminal (4a) Km of the plug (4) via the right input cord (3R), and the
voice coil (2B) The other end is connected to the common terminal (4b) of the plug (4) via the
right side input cord (3R). Also, one end of the voice coil (2L) of the left headphone unit (IL) is
connected to the left voice signal input terminal (4C) of the plug (4) via the left human power
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cord (3L), and this voice coil (2L) The other end is connected to the bladder (4) O common
terminal (4b) via the left side input cord (3L). Also, in FIGS. 1 and 2, (5) a branch portion of the
right eyebrow input code (3R) and the left side input (2 one 1:% si code (3L) is shown, and a plug
(4) is shown in FIG. In the branch part (5), the right input code (3R) and the left side human
power;-led in parallel (aL) a, this branch part + 5) is branched and branched respectively to the
right headphone enit (IR) and The left side headphone enit (IL) K is guided. In addition, in this
branch portion (5), one end of the voice coil (2B) is connected via a resistor (6R) having a
relatively low resistance value (for example, 0.5?) and a connection switch (7R) forming a
muting switch. The connection switch (7L) is connected to the other end of the voice coil (2R),
and one end of the voice coil (2L) constitutes a resistor (6L) having a relatively low resistance
value (for example, 0.5?) and a muting switch ) Is connected to the other end of this voice coil
(2L).
In this case, the second connection switch (7R) and (7L) are operated in conjunction with each
other, and are turned on and off by the muting push button switch (7) K disposed in the branch
portion (5). When connecting the plug (4) of the headphone device of this example to the
headphone connection terminal + 81 KIL of an audio device (in this case, tape recorder (3), voice!
1.1 da) as shown in FIG. The right audio signal input terminal (4m), the common terminal (4b)
and the left audio signal input terminal (4C) of the plug (4) are respectively the right audio signal
output terminal (8a) of the headphone connection terminal (8), the common terminal (8b) and
the left audio signal output terminal (ac) Kil are connected. In FIG. 3, (9R) and (9L) are
respectively a right side reproducing magnetic head and a left side reproducing magnetic head,
and (10R) and (1oL) are respectively a right side amplifier and a left side amplifier. In this
example, the connection switches (7R) and (7L) constituting the muting switch are not operated
by the pressing operation of the pressing button switch (7) disposed at the branch portion (5).
When connected, the right voice signal is supplied at a predetermined level from the right
amplifier (10R) to the voice coil (2R) of the right headphone unit (IR) #i. The left voice signal is
supplied at a predetermined level from the voice coil (2 L) Ka left left pump (IOL) of 1 left head
horn unit (IL) and the left voice head horn (4)- The left sound is usually generated from (IL). On
the other hand, when the connection switches (7B) and (7L) are in the connected state by the
suppression operation of the muting push button switch (7), the resistor (6R) has a relatively low
resistance value C example. Since it is shrimp (0.5 ?), most of the right audio signal supplied
from the right amplifier (IOR) flows through this resistor (6R), and the voice coil (2R) (R) of the
right headphone unit (IR) The impedance does not flow very much, for example, through 32 ?,
and almost right audio is generated and dangerous from this right side headphone unit (IR).
Similarly, since one resistor (6L) has a relatively low resistance value (for example, 0.5?), most
of the left audio signal supplied from the left amplifier (IOL) flows through this resistor (6L) The
left headphone unit (4L) does not have a voice passing through its voice coil (3L) (the impedance
is, for example, 32 ?), and almost no left voice is generated from the left headphone unit (IL).
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As described above, muting is performed when the connection switches (7B) and (7L) are in the
connection state (5) ииииии with the pressing operation of the pressing button switch (7). . As
described above, according to this example, the muting push button switch (7) disposed at the
branch portion (5) of the right input code (3R) and the left input code (3L) is operated to
suppress The audio equipment can be muted only by connecting the connection switches (7R)
and (7L). Therefore, the user can perform the muting operation easily and immediately, if he
notices that someone is speaking from others while listening to music or the like using such a
headphone device, It is possible to respond immediately with the headphone attached. In
addition, also in the case of confirmation of a call bell, confirmation of a visitor, etc., the muting
circuit which is provided in blue mat equipment placed at a fixed distance from the user by
removing the headphones or in each case. It is possible to perform muting operation
immediately, L, or immediately, without having to operate the mute switch, and to immediately
put on a headphone, or immediately tomase. Also, according to this example, a muting (6) gear, a,
and a push button switch (7) may be provided at the branch +51 of the right input code (3R) and
the left input code (3L). Since it is a thing, compared with what was provided in other parts, such
as an ear cup, it is easy to operate, moreover, there is no line of arrangement | positioning I, and
it can comprise easily. Next, another embodiment of the present invention will be described with
reference to FIG. In FIG. 4, the parts corresponding to those in FIG. In FIG. 4, one end of the voice
coil (2B) of the right headphone (IR) (IR) is connected to form a resistor (uR) with a relatively
high resistance (eg, 100 ?) and a minimizing switch The right audio signal input terminal (4m) K
of the bladder (4) is connected via a parallel circuit with the switch (7R), and the other end of the
voice coil (2R) is connected to the common terminal (4b) K of the plug (4) Connecting. Also, one
end of the voice coil (2L) of the left-hand side headphone (IL) is made up of a resistor (7L) with a
relatively high resistance value (for example 100 K?) and a connection switch (7L) constituting
a mutein switch. Connect the left audio signal input terminal (4c) K of the plug (4) via the parallel
circuit. Jinno's place (7) la goa too!
?? (2) As in the example shown in the figure, the connection switches (7R) and (7L) a are
operated in conjunction with each other, and the right-handed human power;-(3R) and the left
input code (3L) The on / off operation is performed by the pressing pushbutton switch (7). In
such FIG. 4 embodiment, when the connection switches (7R) and (7L) constituting the muting
switch are in the connected state by the pressing operation of the muting push button switch (7),
the resistor (IIR) is selected. And the voice coil (2R) K of the right headphone unit (IR) is supplied
with the right audio signal at a predetermined level from the right amplifier (IOR). While the right
voice is generated normally, the left voice signal is supplied at a predetermined level from the left
amplifier (IOL) to the voice coil (2L) of the left headphone unit (IL). The left voice is normally
generated from the left headphone unit (IL). Also, when the connection switches (7R) and (7L)
are in the non-contact (8) ')' state by the suppression operation of the muting push button switch
(7), the right side headphone unit (IR) High-resistance resistors (IIR) in the path of the right audio
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signal flowing through the voice coil (2R) and the path of the left audio signal flowing through
the voice coil (2L) of the left headphone unit (IL) And the voice coil (2L) K of the right side
headphone unit (IR) and the voice coil (2L) of the left side headphone unit (IL). Almost no audio
signal is supplied, the right and left speech become very small and muting takes place. As
described above, in the FIG. 4 embodiment, the muting push button switch (7) is provided with
the t1 right eyebrow input code (3R) and the left side human power;-(3L) (D branch portion (5)
K) Can be minimized by merely suppressing the connection switches 7B and 7L in the
unconnected state, thereby obtaining the same function and effect as the embodiment shown in
FIG. Can. In the above-mentioned embodiment, the push button switch (71 (connection switches
(7R) and (7L)), (9), and ? ? are branched between the right input code (3R) and the left input
code (3L). Although the part (5) k is provided, this muting push button switch (7) (connection
switches (7R) and (7L)) is not limited to the branch part (5) K, but the plug (4) and the branch
part A predetermined position of a portion where the right side input code (3R) and the left side
input code (3L) between (5) are led in parallel (part within the reach of the user that can be
operated immediately) Can be similarly provided.
In the above-described embodiment, the mechanical switch is not used as the muting push button
switch (7), but it is also possible to use a touch switch. Further, the present invention is not
limited to the above-described embodiment, and it is needless to say that other extremely
configurations can be obtained without departing from the gist of the present invention.
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