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JP2004274540

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DESCRIPTION JP2004274540
[PROBLEMS] When attaching an earphone to an ear, it is possible to easily confirm whether it is
for the left ear or for the right ear, and the hanging position of the cord supplying the stereo
signal to the earphone is either left or right side of the body The present invention also provides
an earphone system that can be deployed. A test signal generating unit generates a test signal
(step S3) and supplies it to one earphone based on an operation (step S2) of a reproduction key
for inputting a stereo signal reproduction operation start command of a stereo signal
reproduction device. And stereo signal output switching means for switching between the left
signal and the right signal of the stereo signal output and inverting the same when the
reproduction key is operated a plurality of times consecutively (step S7) and supplying the
earphones for left and right ears. [Selected figure] Figure 1
イヤホンシステム
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
earphone system, and more particularly to an earphone system suitable for portable audio
equipment. 2. Description of the Related Art A conventional earphone system for portable audio
equipment has, for example, one configured as shown in FIG. The earphone system shown in FIG.
4 has a pair of left and right earphones 1 and 2 formed in a shape that can be attached to the
user's ear, and stereos from portable acoustic equipment (not shown) such as an MD player to
the earphones 1 and 2. It comprises the code 3 which supplies the reproduction signal. The cord
3 for supplying the above stereo signal output to the earphones 1 and 2 is provided with an
earphone jack (not shown) at one end of the main cord portion 3a, and electrically connected to
the portable audio equipment main body The signal output is configured to be supplied to the
earphones 1 and 2. Further, the main cord portion 3a branches off halfway and is electrically
connected to the earphones 1 and 2 via branch cord portions 3b and 3c having different lengths.
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In the conventional earphone system shown in FIG. 4, as shown in FIG. 4C, a branch cord portion
3b having a short cord length after branching from the middle of the main cord portion 3a, and a
branch cord portion 3b after the branch Since the branch cord portion 3c having a long cord
length is provided, the main code portion 3a is located on the left side of the user's body.
Therefore, when the left-handed person places the portable audio device body on the right side
of the body, there is a inconvenience in use that the entire cord 3 is inclined in front of the body.
In addition, those who dislike the main cord section 3a hanging down on the left side of the body
are forced to wear earphones in reverse, or endure and use the main cord section 3a left on the
left side Was. [0005] In order to eliminate the inconvenience caused by the arm and the like, and
to prevent the cord from being inclined in front of the body even if the portable audio equipment
main body is disposed on either side of the body, a branch cord There has been proposed an
earphone system provided with a mechanism for adjusting the length of each unit. (See, for
example, Patent Document 1) [0006] Also, in the conventional earphone system shown in FIG. 4,
when attaching the pair of left and right earphones 1 and 2 to the ear, it is for discriminating
between the left ear and the right ear. The display “L” and the display “R” are provided on
the back side of the earphones 1 and 2 so that the display “L” and “R” can be viewed to be
correctly mounted. As described above, as a method for identifying whether the earphone for the
left ear or the earphone for the right ear is correctly attached to the ear, in addition to the
method for identifying by the above-mentioned display, for example, It has been proposed that a
convex portion or a concave portion is provided on the back side so that the left and right of the
earphone can be identified by the tactile sensation.
(For example, refer to Patent Document 2) [0008] Furthermore, as a method to distinguish
between the left ear and the right ear of the earphone, the shapes of the earphone for the left ear
and the earphone for the right ear are made different and attached to the ear In doing so, a
method has been proposed to prevent the identification of the left and right. (For example, refer
to Patent Document 3) [Patent Document 1] Japanese Patent Application Laid-Open No. 200210386 (Page 2-Page 3, FIG. 1) [Patent Document 2] Japanese Utility Model Application
Publication No. 63-26196 (No. 6) Page 1-Page 2, Fig. 1 [Patent Document 3] JP-A 2000-333286
(Pages 2 and 8; Fig. 1) Problems to be Solved by the Invention In the system, a cord length
adjustment mechanism is provided in each of the branch cord parts so that the length up to the
earphone can be arbitrarily set, and the portable audio equipment main body is disposed on
either the left or right side of the body However, since the cord is configured so as not to be
inclined in front of the body, it is necessary to check the placement position of the cord each time
when wearing the earphone, and to adjust its length, which is troublesome. There was a
drawback. Further, in the conventional earphone system, when attaching the earphone, it is
necessary to always be aware of the left and right of the earphone and to confirm the left and
right one by one by display etc., which is troublesome. . Furthermore, there is a possibility that
the earphone may be worn upside down without confirming the display of the earphone
indicating whether it is for the left ear or the right ear, and in that case, there was the
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inconvenience of removing the earphone once and attaching it again. In addition, without notice
that the earphones are worn reversely, there were cases in which the signals reverse to the left
and right were reproduced and heard. The present invention has been made in view of such
problems of the prior art, and the object of the present invention is to attach the earphone to the
left ear or right ear. It is an object of the present invention to provide an earphone system
capable of easily switching between right and left electrically to listen to an appropriate stereo
reproduction signal, even when the earphones are worn in opposite directions. Furthermore, it is
possible to hang the cord connected to the earphone to either the left or right side of the user's
body, and to set the arrangement of the cord in front of the body according to the user's
preference The purpose is to provide an earphone system that can In order to achieve the above
object, in the earphone system of the present invention, earphones for left and right ears
connected to a stereo signal reproduction device, and stereo signals of the stereo signal
reproduction device Test signal generation means for generating a test signal based on the
operation of the reproduction key for inputting the reproduction operation start command and
supplying it to one of the earphones, and the left signal and the right signal of stereo signal
output when the reproduction key is operated plural times continuously. And stereo signal
output switching means for inverting and inverting.
In addition, after the test signal is generated based on the operation of the reproduction key and
supplied to one of the earphones, the normal re-operation is started if the multiple operations of
the reproduction key are not performed within a predetermined time. It is effective to configure
it. Preferably, the test signal generation means is configured to supply an audio message signal
representing the correct attachment position of one of the earphones supplying the test signal to
the one of the earphones. Furthermore, it has a cord comprising a main cord portion connected
to the stereo signal reproducing apparatus and a branch cord portion branched from the middle
of the main cord portion, and earphones for left and right ears connected to the branch cord
portion. In the earphone system, the earphone is supplied along with the rotation operation of
the speaker unit formed in a shape that determines the mounting direction to the ear, the branch
cord fixing unit rotatably fitted to the speaker unit, and the branch cord fixing unit And a stereo
signal output switching unit for switching and inverting the left signal and the right signal of the
stereo signal. Embodiments of the present invention will be described on the basis of examples
with reference to the drawings. FIG. 1 is a flowchart showing the operation of the earphone
system according to the present invention. When attaching the earphone to the ear, it can be
easily confirmed whether it is for the left ear or the right ear. Even in such a case, it is possible to
electrically switch left and right to listen to an appropriate stereo reproduction signal. FIGS. 2
and 3 show the configuration of the earphone system according to the present invention, in
which the cord connected to the earphone can be dropped to either the left or right side of the
user's body, The arrangement of the cord in front of the body can be set according to the
preference of the user. Next, the earphone system according to the present invention will be
specifically described based on FIGS. 1 to 3 described above. First Embodiment A first
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embodiment of an earphone system will be described with reference to FIG. First, earphones are
attached to the ear without being conscious of the left ear and the right ear (step S1). After
wearing the earphones, the "Play" key of a stereo reproduction apparatus such as a portable MD
player is operated to start the reproduction operation (step S2). Based on the operation of the
"Play" key, test signal generation means provided in the stereo reproduction device generates
and outputs a test signal.
The test signal generation means generates a voice message signal “right” expressing that it is
an earphone for the right ear, and supplies it to the earphone for the right ear. Based on the
supplied "right" voice message signal, the "right" voice can be reproduced from the earphone for
the right ear and can be listened to (step S3). At this time, if the earphones for the left and right
ears are properly attached, you can hear the sound "right" from the right ear, and make sure that
the left and right earphones are correctly attached. It can do (step S4). As described above, when
the right and left earphones are properly attached, the system waits until the reproduction
function of the stereo reproduction apparatus works (step S5), and can listen to the stereo signals
respectively reproduced from the left and right ears. (Step S6). On the other hand, when the
earphones are worn wrongly in reverse, in step S 4, the earphones worn on the left ear can hear
the sound “right”, and it can be known that the earphones were worn incorrectly. . In this case,
an operation of pressing the "Play" key of the stereo reproduction apparatus twice in succession
is performed (step S7). The stereo signal output switching means provided in the stereo
reproduction apparatus is activated based on the two consecutive pressing operations of the
"Play" key to switch and invert the left signal and the right signal of the stereo signal output, and
as a result, In addition, proper stereo signals can be supplied to the earphones respectively.
Therefore, without reattaching the earphones, stereo signals can be heard from the left and right
ears as in the case where the left and right earphones are properly attached. The two consecutive
pressing operation of the "Play" key in step S7 is configured to perform the pressing operation
twice within a fixed time after the operation of the "Play" key in step S2. Therefore, when the
"Play" key operation is not performed within a predetermined time, the playback function is
activated to enter normal stereo playback operation. As described above, according to the first
embodiment of the present invention, when attaching the earphone to the ear, it is possible to
easily confirm whether it is for the left ear or the right ear, and when the earphone is attached to
the left and right reversely Even in this case, it is possible to electrically switch left and right to
listen to an appropriate stereo reproduction signal, and it is possible to eliminate the
troublesomeness such as reattachment of the earphone. Second Embodiment A second
embodiment of the earphone system will be described with reference to FIGS. 2 and 3.
As shown in FIG. 2, the two earphones 4 and 5 in the earphone system shown in FIGS. 2 and 3
are formed in such a shape that their front and back positions are determined when they are
respectively attached to the left and right ears. FIG. 3A shows a state in which the earphone 4 is
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attached to the right ear, and FIG. 3B shows a state in which the earphone 5 is attached to the
left ear. As shown in FIG. 2, the earphones 4 and 5 have a main cord portion 6 a electrically
connected to a stereo signal reproducing apparatus (not shown) and a length of a branch from
the middle of the main cord portion 6 a. It electrically connects to the cord 6 which consists of
different branch cord parts 6b and 6c, respectively. The two earphones 4 and 5 are configured to
be supplied with both the left signal and the right signal of the stereo signal through the cord 6.
Further, as shown in FIG. 3C, the earphones 4 and 5 are configured by being divided into two
members of a speaker unit 7 and a branch cord fixing unit 8. The speaker unit 7 is provided with
a speaker (not shown), a sound emitting unit 7a for emitting the reproduced sound thereof, and a
cylindrical recess 7b for fitting the branch cord fixing unit 8 rotatably and not to fall off. There is.
On the other hand, the branch cord fixing portion 8 is provided with a disc-shaped rotating
portion 8 a which slides and rotates the inner peripheral wall surface of the recess 7 b of the
speaker portion 7. Furthermore, a stereo signal output changeover switch unit capable of
switching the left and right signals on the recess 7 b of the speaker unit 7 and the rotating unit 8
a of the branch cord fixing unit 8 based on the rotating operation of the rotating unit 8 a It
constitutes nine. The stereo signal output changeover switch unit 9 is provided with a signal
contact 9 a and two grounding contacts 9 b and 9 c on the inner peripheral wall surface of the
recess 7 b of the speaker unit 7. The signal contacts 9 a provided in the recess 7 b of the speaker
unit 7 are provided on the front side of the earphones 4 and 5 (one that comes forward when the
earphones 4 and 5 are attached to the ear). The two grounding contacts 9b and 9c are provided
at positions different from each other by 90 degrees from the signal contacts 9a, that is, at the
top and bottom as shown in FIG. 3 (c). Further, on the outer peripheral wall surface of the
rotating portion 8a of the branch cord fixing portion 8, a left signal contact 9d, a right signal
contact 9e, and a grounding contact 9f are provided. The left signal contact 9d and the right
signal contact 9e are provided at positions different from each other by 180 degrees, and the
grounding contact 9f is provided at a position different from each other by 90 degrees between
the left signal contact 9d and the right signal contact 9e. There is.
By configuring as described above, when the branch cable fixing unit 8 is rotated 180 degrees
with respect to the speaker unit 7, the contacts of the stereo signal output switching unit 9 are
switched, so the earphones 4 and 5 can be respectively By attaching to the ear, the left and right
signals are switched automatically. Therefore, even in the case of erroneous attachment, since
the left and right signals are switched, it is possible to eliminate the troublesomeness of removing
the attached earphones 4 and 5 and reattaching them. In addition, when the earphones 4 and 5
are reversely mounted, the hanging position of the cord 6 can be changed by 180 degrees. In this
way, even when the earphones 4 and 5 are worn in reverse, the left and right signals can be
switched, so that it is possible to hang the main cord portion 6a of the cord 6, in particular, to
either the left or right side in front of the body It is possible to eliminate the inconvenience
caused by the arm. Since the present invention is configured as described above, by providing a
voice message signal indicating the correct mounting position when worn on the ear, the present
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invention can be used for the left ear or the right ear. It is possible to easily check whether it is
for use or to switch the left and right electrically and listen to the proper stereo reproduction
signal even when the earphone is worn reversely, so that it can be used for the left ear or right
ear when the earphone is worn It is possible to eliminate the inconvenience that it is necessary to
always be aware of use. In addition, it is possible to hang the cord connected to the earphone to
either the left or right side of the user's body, and to set the arrangement of the cord in front of
the body according to the user's preference it can. Furthermore, even if the portable audio device
main body is disposed on either side of the body, the main cord portion etc. of the cord can be
prevented from being inclined, and in particular, inconvenience due to the wrist can be
eliminated. effective. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing the
operation of an earphone system according to a first embodiment of the present invention. FIG. 2
is a perspective view showing a schematic configuration of an earphone system according to a
second embodiment of the present invention. FIG. 3 is a perspective view showing a schematic
configuration of an earphone system according to a second embodiment of the present invention.
FIG. 4 is a perspective view showing a schematic configuration of a conventional earphone
system. [Explanation of the code] 1, 2 earphone 3 code 3a main code 3b, 3c branch code 4, 5,
earphone 6 code 6a main code 6b, 6c branch code 7 speaker 7a sound emitting part 7b concave
8 fixed branch code Section 8a Rotating section 9 Stereo signal output changeover switch section
9a Signal contact 9b, 9c Grounding contact 9d Left signal contact 9e Right signal contact 9f
Grounding contact
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