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JP2005286919

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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 JP2005286919
The present invention provides an audio signal transmission / reception system or the like which
can use any combination of headphones as a left / right pair even when a plurality of
headphones are mixed. A headphone (5) generates left / right identification information
identifying whether the left or right ear is used by pressing either the left ear button (54a) or the
right ear button (54b). Do. The headphones 5 transmit the ID information stored in the storage
unit (55) and the generated left and right identification information to the voice server device 3
functioning as a voice signal transmission device. The voice server device 3 receives the ID
information and the left and right identification information, updates the pairing table (40) with
which the ID information of the headphone 5 and the left and right identification information are
associated, and stores the updated pairing table in the storage unit (35). Then, the audio server
device 3 transmits a packet of an audio signal for the left ear or for the right ear encoded
according to the left / right identification information to the headphones 5 having the ID
information of the pairing table 40. [Selected figure] Figure 1
Audio signal transmitting / receiving system, headphone and audio signal transmitting apparatus
[0001]
The present invention relates to an audio signal transmitting / receiving system, headphones and
an audio signal transmitting apparatus, and more specifically, an audio signal in which left and
right ear headphones are independent and any combination can be used as a left / right pair The
present invention relates to a transmitting and receiving system, and a headphone and an audio
signal transmitting apparatus as components of an audio signal transmitting and receiving
system.
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1
[0002]
In recent years, an audio signal is transmitted from a sound reproducing apparatus body to
wireless headphones by wireless communication using infrared rays or radio waves (for example,
Bluetooth (registered trademark) using radio waves in the 2.4 GHz frequency band), An audio
signal transmission / reception system has been put to practical use that can hear the audio
(music) reproduced by the audio playback device at a location 10m to 100m away from the
audio playback device without the need to bother with cord lines. (See, for example, Patent
Document 1).
[0003]
According to the wireless communication such as Bluetooth, the audio signal is transmitted only
to the headphone in which the communication with the audio reproducing apparatus is
established by the ID information (BD address), so the confidentiality of the audio signal is
extremely high.
Also, by preparing a plurality of headphones and assigning different transmission channels to
each headphone, different audio signals are transmitted to each headphone.
Therefore, when the voice reproducing device main body is installed in a vehicle such as a car, a
plurality of passengers of the vehicle do not bother other people, in other words, without being
interfered by other people, each desired music It can be enjoyed.
[0004]
In the wireless headphones, a pair of left and right speakers are connected by a frame or a cable,
and the left and right speakers are not used independently. However, the storage space for the
headphones is not so much improved as compared with the wire connection type headphones,
and there is a demand for headphones in which the left and right are completely independent.
Unexamined-Japanese-Patent No. 2003-280693
[0005]
By the way, in order to perform wireless communication, the ID information for identifying the
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2
headphones must be registered in advance in the sound reproducing apparatus main body, and
therefore, when the left ear and the right ear are completely independent, the same one is used.
It is necessary to assign the same ID information to each headphone so that the audio signal is
transmitted to each headphone.
[0006]
However, when the same ID information is assigned to the left and right headphones, the audio
signal is always transmitted to each of the pair of left and right headphones.
Therefore, when a plurality of sets of headphones are mixed, it is extremely difficult to determine
which combination is the left / right pair. That is, when the user randomly selects two
headphones, there is a possibility that they are different sets of headphones, so audio is output
from one headphone, but no audio is output from the other headphone, Or there is a possibility
that the sound of different contents may be output.
[0007]
The present invention has been made in view of such circumstances, and the audio signal
transmitting apparatus identifies each headphone and identifies whether each headphone is for
left or right ear, By setting as a pair of left and right pairs, even when a plurality of headphones
are mixed, headphones of any combination can be used as a pair of left and right without
worrying about the combination. It is an object of the present invention to provide an audio
signal transmitting / receiving system and a headphone and an audio signal transmitting
apparatus as components of the audio signal transmitting / receiving system.
[0008]
Further, according to the present invention, the headphone can be commonly used for the left ear
and the right ear by discriminating whether the headphone is attached to the left ear or the right
ear by the discriminating means, and the user randomly An object of the present invention is to
provide an audio signal transmitting / receiving system which can be used for either the left ear
or the right ear when headphones are selected, and to provide the headphones as components of
the audio signal transmitting / receiving system.
[0009]
Furthermore, the present invention is configured to specify that the headphone is for either the
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3
left ear or the right ear, so that the audio signal transmitting apparatus reliably ensures that the
headphone is for the left ear, for example. An object of the present invention is to provide an
audio signal transmission / reception system which does not have the possibility of recognizing it
as the left ear and recognizes it as the right ear and headphones as a component of the audio
signal transmission / reception system.
[0010]
Furthermore, according to the present invention, the audio signal transmitting apparatus
transmits the audio signal for the left ear to the headphone for the left ear and transmits the
audio signal for the right ear to the headphone for the right ear. It is an object of the present
invention to provide an audio signal transmitting / receiving system capable of reducing the
amount of information of an audio signal, and an audio signal transmitting apparatus as a
component of the audio signal transmitting / receiving system.
[0011]
Furthermore, according to the present invention, the audio signal transmitting apparatus
transmits the audio signal for the left ear and the audio signal for the right ear to each
headphone, and the headphone for the left ear is for the left ear among the transmitted audio
signals. The pairing of each headphone in the audio signal transmitting apparatus was incorrect
by extracting the audio signal and setting the headphone for the right ear to extract the audio
signal for the right ear among the transmitted audio signals. Even in this case, an audio signal
transmission / reception system capable of outputting a left ear audio from the left ear
headphones and an audio output for the right ear from the right ear headphones, and an audio
signal transmission / reception system The purpose is to provide headphones as a component of
[0012]
An audio signal transmitting / receiving system according to a first aspect of the present
invention comprises an audio signal transmitting apparatus for transmitting an audio signal by
radio, means for receiving an audio signal transmitted from the audio signal transmitting
apparatus, and converting the received audio signal into sound waves. In an audio signal
transmitting and receiving system comprising a plurality of headphones provided with means,
the headphones identifying first identification information identifying each headphone and
whether the headphones are for the left ear or for the right ear Means for transmitting second
identification information to the audio signal transmitting device, the audio signal transmitting
device comprising: receiving means for receiving the first identification information and the
second identification information; received first identification information; (2) setting means for
setting each headphone as a pair of left and right based on the identification information.
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[0013]
In the audio signal transmitting and receiving system according to the second aspect of the
present invention, in the audio signal transmitting apparatus according to the first aspect, the
headphone which first transmitted the first identification information and the second
identification information uses the second identification information for left ear or right When it
is identified which one is for the ear, then the headphones that transmitted the first identification
information and the second identification information are different from the headphones that
first transmitted the first identification information and the second identification information.
And means for determining that it is for use.
[0014]
An audio signal transmission / reception system according to a third aspect of the present
invention is characterized in that, in the first aspect or the second aspect, the audio signal
transmission device is configured to transmit different audio signals for each pair of left and right
headphones of different pairs. I assume.
[0015]
The audio signal transmitting / receiving system according to a fourth aspect of the present
invention is the audio signal transmitting / receiving system according to any one of the first to
third aspects, wherein the headphone can be optionally worn on the left ear or the right ear, and
a storage unit storing the first identification information. And a determination unit configured to
determine which one of the left ear and the right ear is worn, and a unit configured to generate
the second identification information based on the determination by the determination unit.
[0016]
The audio signal transmission / reception system according to a fifth aspect of the present
invention is the audio signal transmission / reception system according to the fourth aspect,
wherein the determination means determines a first determination unit for determining that the
left ear is attached and a determination that the right ear is attached The headphone includes a
notification signal indicating that the first identification information and the second identification
information are to be transmitted when either the first determination unit or the second
determination unit is significant. In order to transmit to the voice signal transmitting device, the
voice signal transmitting device is permitted to permit transmission of the first identification
information and the second identification information when the receiving unit receives the
notification signal. A signal is sent to the headphones.
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[0017]
The audio signal transmitting and receiving system according to a sixth aspect of the present
invention is the audio signal transmitting and receiving system according to any one of the first
to third aspects, wherein the headphone includes a storage unit in which the first identification
information and the second identification information are stored. Do.
[0018]
In an audio signal transmitting and receiving system according to a seventh aspect of the present
invention, in the audio signal transmitting apparatus according to any one of the first to sixth
aspects, the audio signal for the left ear or the right ear is And transmitting the audio signal for
the audio signal to the headphone.
[0019]
The audio signal transmitting and receiving system according to an eighth aspect of the present
invention is the audio signal transmitting / receiving system according to any one of the first to
sixth aspects, wherein the audio signal includes an audio signal for the left ear and an audio
signal for the right ear And means for extracting an audio signal for the left ear or an audio
signal for the right ear from the transmitted audio signal based on the second identification
information.
[0020]
A headphone according to a ninth aspect of the present invention is a headphone that can be
optionally worn on the left ear or the right ear, and converts an audio signal wirelessly
transmitted from the outside into a sound wave, and stores the first identification information for
identifying the headphone And a determination means for determining which one of the left ear
and the right ear is worn, a means for generating the second identification information based on
the determination by the determination means, the first identification information, and the
second And means for transmitting identification information to the outside.
[0021]
A headphone according to a tenth aspect of the present invention is a headphone for converting
an audio signal wirelessly transmitted from the outside into a sound wave, the first identification
information for identifying the headphone, and whether the headphone is for left or right ear
And a means for transmitting the first identification information and the second identification
information to the outside.
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[0022]
A headphone according to an eleventh aspect of the invention is the headphone according to the
ninth aspect or the tenth aspect, wherein the audio signal includes an audio signal for the left ear
and an audio signal for the right ear, and based on the second identification information The
apparatus may further comprise means for extracting an audio signal for the left ear or an audio
signal for the right ear from the transmitted audio signal.
[0023]
An audio signal transmission apparatus according to a twelfth aspect of the present invention is
an audio signal transmission apparatus for wirelessly transmitting an audio signal to the outside,
wherein the first identification information of the transmission destination for transmitting the
audio signal from the outside and the audio to be transmitted to the transmission destination
Means for receiving second identification information identifying whether the signal is an audio
signal for the left ear or an audio signal for the right ear; and based on the second identification
information, the audio signal for the left ear Alternatively, the audio signal for the right ear is
transmitted to a destination.
[0024]
An audio signal transmitting apparatus according to a thirteenth aspect of the present invention
is the audio signal transmitting apparatus according to the twelfth aspect, wherein there are a
plurality of transmission destinations for transmitting the audio signal, and different audio
signals are transmitted for each transmission destination.
[0025]
In the first invention, the first identification information for identifying each headphone to the
headphone and the second identification for identifying whether the headphone is for left or
right ear are transmitted to the audio signal transmitting device. By transmitting, the audio signal
transmission apparatus can identify each headphone and identify whether each left headphone is
for ear or for right ear, and set each headphone as a left-right pair. it can.
As a result, even when a plurality of headphones are mixed, headphones of any combination can
be used as a left / right pair without worrying about the combination.
[0026]
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7
In the second aspect of the invention, the audio signal transmitting device determines whether
the headphone to which the first identification information and the second identification
information are first transmitted is for the left ear or the right ear according to the second
identification information. The headphones that have identified and then transmitted the first
identification information and the second identification information are different from the
headphones that first transmitted the first identification information and the second
identification information without performing identification by the second identification
information. Determined to be for the ear.
Thereby, even if two headphones transmit the same second identification information to the
audio signal transmitting apparatus, the two headphones can be set as a left / right pair.
[0027]
In the third invention and the thirteenth invention, by transmitting different audio signals to
different pairs of left and right headphones, it is possible to distribute music of different content
to each pair of headphones.
[0028]
In the fourth and ninth aspects of the invention, the first identification information for identifying
the headphones is stored in the storage unit, and the discrimination means determines whether
the left or right ear is worn by the discrimination means. Second identification information is
generated to identify whether it is for left or right ear.
Since the headphones can be shared for the left ear and the right ear based on the discrimination
by the discrimination means, the user selects the headphones at random, and is used for either
the left ear or the right ear Can improve the versatility.
[0029]
In the fifth aspect of the invention, either the first discrimination unit for discriminating that the
headphone is worn on the left ear or the second discrimination unit for discriminating that the
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8
headphone is worn on the right ear is significant. In this case, before transmitting the first
identification information and the second identification information, a notification signal
indicating transmission is transmitted to the audio signal transmission device.
Then, when the audio signal transmission device receives the notification signal, the audio signal
transmission device transmits, to the headphones, a permission signal for permitting
transmission of the first identification information and the second identification information.
Thus, the headphone and the audio signal transmitting apparatus can determine whether there is
no problem in performing communication by transmitting and receiving the notification signal
and the permission signal.
[0030]
In the sixth invention and the tenth invention, the storage unit stores the first identification
information for identifying the headphone and the second identification information for
identifying whether the headphone is for left or right ear. The audio signal transmission device is
surely for the left ear, for example, when the headphone is for the left ear, because the
headphones are specified to be either for the left ear or for the right ear. It is not recognized that
it is for the right ear.
[0031]
In the seventh invention and the twelfth invention, the audio signal transmitting apparatus is an
audio signal for the left ear or an audio for the right ear depending on whether the headphone is
for the left ear or for the right ear. Send the signal to each headphone.
For example, when the headphone is for the left ear, the audio signal transmitting apparatus can
reduce the amount of information of the audio signal to be transmitted by transmitting the
necessary audio signal for the left ear.
In other words, it is possible to transmit an audio signal with a large amount of information, that
is, a higher quality.
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9
[0032]
In the eighth and eleventh inventions, when the headphone is for the left ear, the audio signal for
the left ear is extracted from the transmitted audio signal, and when the headphone is for the
right ear, it is transmitted. The voice signal for the right ear is extracted from the voice signal.
As a result, even if the pairing of each headphone in the audio signal transmission apparatus is
incorrect, the left ear headphones output the sound for the left ear, and the right ear headphones
for the right ear Audio is output.
[0033]
According to the first aspect of the present invention, the audio signal transmitting apparatus
identifies each headphone and identifies whether each headphone is for left or right ear, and sets
each headphone as a left-right pair. Therefore, even when a plurality of headphones are mixed,
headphones of any combination can be used as a left-right pair without worrying about the
combination.
[0034]
According to the second aspect of the invention, the audio signal transmitting device identifies
whether the first headphone is for left or right ear by the second identification information, and
the next headphone is different from the first headphone. By determining that it is for the ear,
even if two headphones transmit the same second identification information to the audio signal
transmitter, the two headphones can be set as a left / right pair. .
[0035]
According to the third invention and the thirteenth invention, by transmitting different audio
signals to different pairs of left and right headphones, music of different content can be
distributed to each pair of headphones. Even when there are multiple people inside a closed
space, it is possible to enjoy the music of the content desired by each person without being
disturbed by others, in other words, without being disturbed by others .
[0036]
According to the fourth invention and the ninth invention, since the headphones can be shared
for the left ear and the right ear based on the discrimination by the discrimination means, it is a
case where the user randomly selects the headphones, It can be used for either the right ear or
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10
the right ear, and the versatility is improved.
[0037]
According to the fifth aspect of the present invention, the headphone and the audio signal
transmitting apparatus can determine whether there is no problem in performing communication
by transmitting and receiving the notification signal and the permission signal, so that the
wireless signal can not be received. When there is a situation where there is an arrangement,
useless communication is not performed.
[0038]
According to the sixth invention and the tenth invention, since the headphone is specified to be
either for the left ear or for the right ear, the audio signal transmitting apparatus is used, for
example, when the headphone is for the left ear. Is definitely recognized as for the left ear and
not for the right ear.
[0039]
According to the seventh and twelfth inventions, when the headphone is for the left ear, the
audio signal for the right ear is unnecessary, so the audio signal transmitting apparatus transmits
the necessary audio signal for the left ear. Thus, the amount of information of the audio signal to
be transmitted can be reduced.
In other words, it is possible to transmit a large amount of information, that is, a higher quality
audio signal to the headphones.
[0040]
According to the eighth and eleventh inventions, when the headphone is for the left ear, the
audio signal for the left ear is extracted from the transmitted audio signal, and when the
headphone is for the right ear, the signal is transmitted. In order to extract the audio signal for
the right ear among the audio signals, even if the pairing of each headphone in the audio signal
transmission apparatus is incorrect, the audio for the left ear is output from the headphone for
the left ear The headphone for the right ear outputs an audio for the right ear, and so on, which
produces excellent effects.
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[0041]
Hereinafter, the present invention will be described in detail based on the drawings showing the
embodiments.
[0042]
Embodiment 1 FIG. 1 is a schematic view showing an overview of an audio signal transmitting
and receiving system according to Embodiment 1 of the present invention.
The audio signal transmitting / receiving system 1 according to the first embodiment of the
present invention includes an audio server device 3 functioning as an audio signal transmitting
device, and a plurality of headphones 5 5 functioning as an audio signal receiving device. The
headphones 5 and 5 perform wireless data communication by wireless (for example, Bluetooth).
[0043]
The headphone 5 has a left ear button 54a and a right ear button 54b on the lower right and
lower right portions of the rear side of the speaker 58, respectively.
The headphone 5 has a shape that can be worn on either the left ear or the right ear, and when
the user 2 randomly selects the two headphones 5 and 5 and arranges them at their ears, the
headphones 5 are arranged in the left ear. Since the position of the left ear button 54a
corresponds to the position of the user 2's left thumb, when pressed by the left thumb, it
functions as the left ear, and the position of the right ear button 54b of the headphone 5
disposed on the right ear Functions as the right ear by being pressed by the right thumb in order
to correspond to the position of the right thumb of the user 2.
[0044]
FIG. 2 is a block diagram showing the configuration of the audio signal transmitting and
receiving system according to Embodiment 1 of the present invention.
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The headphone 5 includes a control unit 51, a ROM 52, a RAM 53, an operation unit 54, a
storage unit 55, a communication unit 56, a digital / analog conversion unit (D / A conversion
unit) 57, a speaker 58, and a clocking unit 59.
[0045]
Specifically, the control unit 51 is configured by an MPU, and is connected to the abovedescribed hardware components of the headphone 5 via a bus to control the components and
also according to a control program stored in the ROM 52. , Perform various software functions.
The ROM 52 stores programs of various software necessary for the operation of the headphone
5 in advance.
The RAM 53 is configured by an SRAM, a flash memory, or the like, and stores temporary data
generated when software is executed.
[0046]
As described above, the operation unit 54 includes the left ear button 54a and the right ear
button 54b, and the control unit 51 is operated by pressing either the left ear button 54a or the
right ear button 54b. , ID registration request signal, and left / right identification information
identifying whether the headphone 5 is for the left ear or for the right ear.
[0047]
The storage unit 55 stores ID information of the headphones 5.
The ID information is a unique address for identifying the headphones 5 (for example, a BD
address of 48 bit length), and the headphones 5 are uniquely identified based on the ID
information.
[0048]
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The communication unit 56 has a function of establishing a wireless communication link
conforming to the Bluetooth standard, establishes a communication link with the voice server
device 3, and generates ID information stored in the storage unit 55 and the control unit 51. It
sends the left and right identification information to the voice server device 3.
Further, the communication unit 56 receives the audio signal transmitted from the audio server
device 3 and outputs the signal to the D / A converter 57.
[0049]
The D / A conversion unit 57 converts the audio signal output from the communication unit 56
from digital format to analog format, and converts the audio signal in analog format to sound
wave in the audible frequency band by the speaker 58.
The speaker 58 outputs a warning sound such as a beep when it is necessary to perform a
predetermined notification to the user 2 in addition to the conversion of the sound signal into the
sound wave.
[0050]
The timer unit 59 has a function of clocking the time T1 between the first time and the second
time and notifying the time T1 to the control unit 51 in response to a request from the control
unit 51, and mainly the voice server In order to measure the communication time between the
request signal and the response signal in the communication with the device 3 and to determine
that the communication error has occurred and to stop the processing by the control unit 51
when the communication time is larger than a predetermined value (threshold) It is used.
[0051]
The voice server device 3 includes a control unit 31, a ROM 32, a RAM 33, an operation unit 34,
a storage unit 35, a codec unit 36, a communication unit 37, a display unit 38, and a clocking
unit 39.
[0052]
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Specifically, the control unit 31 is configured by an MPU, and is connected to the abovedescribed hardware units of the voice server device 3 via the bus to control the units and control
stored in the ROM 32. Execute various software functions according to the program.
The ROM 32 stores various software programs necessary for the operation of the voice server
device 3 in advance.
The RAM 33 is configured by an SRAM, a flash memory or the like, and stores temporary data
generated at the time of execution of software.
[0053]
The communication unit 37 has a function of establishing a wireless communication link
conforming to the Bluetooth standard, and receives the ID information and the left / right
identification information of the headphone 5 from the headphone 5 in which the link is
established.
[0054]
The storage unit 35 stores a plurality of audio data 35a, 35b, ... such as music, and a pairing table
40 in which the ID information of the headphones 5 and the left and right identification
information as shown in FIG. 3 are associated.
[0055]
The operation unit 34 includes character keys, ten keys, and various function keys necessary to
operate the voice server device 3, and as a function key, a plurality of voice data 35a, 35b, ...
stored in the storage unit 35. It has an audio selection key 34 a for selecting which of the audio
data of the audio data is to be transmitted to the headphone 5.
[0056]
The display unit 38 is a small display device such as a liquid crystal display or an LED, and
displays the operating state of the audio server device 3 to notify the user 2 of the operating
state.
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For example, the user 2 is notified by displaying to which headphone 5 the audio signal relating
to which audio data of the plurality of audio data 35a, 35b,.
It is also possible to substitute part or all of the various keys of the operation unit 34 by using
the display unit 38 as a touch panel system.
[0057]
The control unit 31 reads out the audio data selected by the audio selection key 34a from the
storage unit 35, decodes the read audio data into an audio signal in the codec unit 36, and
converts the audio signal to the audio signal for the left ear and the right ear After being
separated into audio signals for encoding, they are encoded into a data format according to the
communication protocol.
[0058]
The communication unit 37 packet-transmits the encoded audio signal for the left ear or for the
right ear to the headphones 5 having the ID information of the pairing table 40 according to the
left / right identification information of the headphones 5 in a time division manner.
More specifically, the ID information is extracted from the pairing table 40, and the extracted ID
information is added to the transmission destination field of the header of the packet.
Also, when the left / right identification information is extracted from the pairing table 40 and
the extracted left / right identification information indicates that it is for the left ear (for the right
ear), it is encoded by the codec unit 36 in the data field of the packet. The audio signal for the left
ear (for the right ear) is given.
[0059]
The timer unit 39 has a function of clocking the time T2 between the first time and the second
time and notifying the time T2 to the control unit 31 in response to a request from the control
unit 31. The communication time between the request signal and the response signal in the
communication with is measured, and when the communication time is larger than the threshold
value, it is determined to be a communication error and used to stop the processing by the
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control unit 31.
[0060]
FIG. 4 is a flowchart showing an outline of an operation flow at the time of ID registration of the
headphone 5 according to the first embodiment of the present invention.
The operation flow is an example, and the present invention is not limited to this.
Such an operation flow can be performed by incorporating a computer program into the ROM 52
in advance.
[0061]
The headphone 5 determines whether ID registration is requested based on the presence or
absence of pressing of the left ear button 54a or the right ear button 54b of the operation unit
54 (step S1).
When one of the left ear button 54a and the right ear button 54b is pressed, it is determined that
the ID registration is requested (S1: YES), and a request signal REQ for requesting the ID
registration is issued. It is generated and transmitted to the voice server device 3 (step S2), and
the time T1 of the timer unit 59 is reset and activated (step S3).
On the other hand, when either the left ear button 54a or the right ear button 54b is not pressed,
it is determined that the ID registration is not requested (S1: NO), and the process is returned to
S1.
[0062]
After transmitting the request signal REQ, the headphone 5 has transitioned to the standby state
to receive the permission signal ACK from the voice server device 3 and determines whether
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17
there is a problem in the communication state with the voice server device 3 Then, it is
determined whether the time T1 of the timer unit 59 is larger than the threshold A1 (step S4).
That is, when the time T1 of the timer unit 59 is larger than the threshold A1, it is determined
that there is a problem in the communication state between the headphone 5 and the audio
server device 3, and the process is stopped.
[0063]
When the headphone 5 determines that the time T1 of the timer unit 59 is larger than the
threshold A1 (S4: YES), it determines that the permission signal ACK can not be received from the
voice server device 3 within a predetermined time, and ID registration can be performed. An
instruction signal for outputting from the speaker 58 a sound indicating that there is no sound is
output to the speaker 58 (step S5), and the process is ended.
As a result, the user 2 can recognize that effect because the voice indicating that the ID
registration has not been performed is output from the speaker 58.
[0064]
When the headphone 5 determines that the time T1 of the timer unit 59 is not larger than the
threshold A1 (S4: NO), it determines whether the permission signal ACK has been received from
the voice server device 3 (step S6).
When the headphone 5 determines that the permission signal ACK has not been received from
the voice server device 3 (S6: NO), the process returns to S4.
On the other hand, when it is determined that the permission signal ACK is received from the
voice server device 3 (S6: YES), the ID information stored in the storage unit 35 and the
depression of the left ear button 54a or the right ear button 54b The right and left identification
information generated according to the selected button is transmitted to the voice server device
3 (step S7).
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[0065]
After transmitting the ID information and the left and right identification information, the
headphone 5 has transitioned to the standby state to receive the registration notification signal
or the non-registration notification signal, causing a problem in the communication state with the
voice server device 3 again. In order to determine whether or not there is, it is determined
whether the time T1 of the timer unit 59 is larger than the threshold A1 (step S8).
[0066]
When the headphone 5 determines that the time T1 of the timer unit 59 is larger than the
threshold A1 (S8: YES), it is determined that the registration notification signal or the nonregistration notification signal can not be received from the voice server device 3 within a
predetermined time. , Shift the process to S5.
On the other hand, when it is determined that the time T1 of the timer unit 59 is not larger than
the threshold A1 (S8: NO), it is determined whether a registration notification signal has been
received from the voice server device 3 (step S9).
[0067]
When the headphone 5 determines that the registration notification signal has been received
from the audio server device 3 (S 9: YES), the headphone 5 outputs to the speaker 58 an
instruction signal for outputting from the speaker 58 a sound indicating that the ID registration
has been completed. (Step S10), the process ends.
As a result, the user 2 can recognize that effect because the voice indicating that the ID
registration has been completed is output from the speaker 58.
[0068]
When the headphone 5 determines that the registration notification signal has not been received
from the voice server device 3 (S9: NO), it determines whether the unregistered notification
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signal has been received from the voice server device 3 (step S11).
If the headphone 5 determines that the unregistered notification signal has been received from
the voice server device 3 (S11: YES), the process proceeds to S5, while the unregistered
notification signal is not received from the voice server device 3 If it is determined (S11: NO), the
process returns to S8.
[0069]
FIG.5 and FIG.6 is a flowchart which shows the outline | summary of the operation | movement
flow at the time of ID registration of the audio | voice server apparatus 3 which concerns on
Embodiment 1 of this invention.
The operation flow is an example, and the present invention is not limited to this.
In addition, such an operation flow can be performed by incorporating a computer program into
the ROM 32 in advance.
[0070]
Whether the audio server device 3 has received the ID information and left / right identification
information from the headphone 5 (step S21), and received the respective ID information and left
/ right identification information necessary for pairing the two headphones It is determined
whether or not it is (step S22).
[0071]
Reception processing (FIG. 6) of the ID information and the left and right identification
information in the voice server device 3 is performed on each of the headphones 5.
First, the audio server device 3 is in a standby state to receive the request signal REQ from the
headphone 5, and determines whether the request signal REQ has been received from the
headphone 5 (step S31).
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If it is determined that the request signal REQ has not been received (S31: NO), the process
returns to S31, and the reception process of the ID information and the left and right
identification information is continued.
[0072]
When the audio server device 3 determines that the request signal REQ has been received from
the headphone 5 (S31: YES), the audio server device 3 generates a permission signal ACK
indicating that the request for ID registration from the headphone 5 is permitted. Then, the time
T2 of the timer unit 39 is reset and activated (step S33).
[0073]
After transmitting the permission signal ACK, the voice server device 3 transitions to the standby
state to receive the ID information and the left and right identification information, and
determines whether there is a problem in the communication state with the headphones 5 or not.
It is determined whether the time T2 of the timer unit 39 is larger than the threshold A2 (step
S34).
[0074]
When it is determined that the time T2 of the timer unit 39 is larger than the threshold A2 (S34:
YES), the voice server device 3 determines that the ID information and the left and right
identification information can not be received from the headphone 5 within a predetermined
time. The reception process of the information and the left and right identification information is
ended.
[0075]
When it is determined that the time T2 of the timer unit 39 is not larger than the threshold A2
(S34: NO), the voice server device 3 determines whether or not the ID information and the left
and right identification information are received from the headphones 5 (step S35). .
If the voice server device 3 determines that the ID information and the left and right
identification information are not received from the headphones 5 (S35: NO), the process returns
to S34.
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On the other hand, when it is determined that the ID information and the left and right
identification information are received from the headphone 5 (S35: YES), the reception process
for receiving the ID information and the left and right identification information is ended.
[0076]
When it is determined that two pieces of ID information and two pieces of left and right
identification information are not received (S22: NO), the voice server device 3 returns the
process to S21 and continues the reception process of the ID information and the left and right
identification information.
[0077]
If the voice server device 3 determines that two pieces of ID information and two pieces of left
and right identification information are not received (S22: YES), it indicates that one of the left
and right identification information is for the left ear, and the other left and right identification It
is determined whether the information indicates that the information is for the right ear, that is,
whether the two left and right identification information is a left and right pair (step S23).
[0078]
When the audio server device 3 determines that the two left and right identification information
is the left and right pair (S23: YES), the pairing of the two headphones 5 and 5 is possible, so the
ID of each headphone 5 received is The information is associated with the left / right
identification information to update the pairing table 40 and store it in the storage unit 35 (step
S24).
Thereby, ID registration of the headphones 5 and 5 is completed.
[0079]
Then, the voice server device 3 generates a registration notification signal indicating that the ID
registration has been completed, transmits it to the headphone 5 (step S25), and displays
information indicating the completion of the ID registration on the display unit 38. An instruction
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22
signal for outputting is output to the display unit 38 (step S26), and the process is ended.
As a result, the user 2 can recognize that effect because the information indicating that the ID
registration has been completed is displayed on the display unit 38.
[0080]
On the other hand, when the audio server device 3 determines that the two left and right
identification information is not the left and right pair (S23: NO), the pairing of the two
headphones 5 and 5 is impossible, so the pairing table 40 is updated. To generate an
unregistered notification signal indicating that the ID registration could not be performed and
transmit it to the headphone 5 (step S27), and to display information indicating that the ID
registration could not be performed on the display unit 38 The instruction signal is output to the
display unit 38 (step S28), and the process ends.
Thereby, the user 2 can recognize that effect because the information indicating that the ID
registration has not been performed is displayed on the display unit 38.
[0081]
As described above, according to the present embodiment, the headphone 5 functions as a left
ear or a right ear when either the left ear button 54 a or the right ear button 54 b is pressed, so
the headphone 5 can be used for the left ear And can be shared with the right ear. In the
headphone 5, ID information is stored in the storage unit 55, and when either the left ear button
54a or the right ear button 54b is pressed, left / right identification information is generated. The
pairing table 40 is updated by transmitting the identification information to the voice server
device 3. Therefore, since the audio server device 3 can reliably transmit the audio signal to each
headphone, there is no possibility that the audio is not output from one of the headphones, and a
plurality of headphones are mixed. Also, headphones of any combination can be used as a left /
right pair without worrying about the combination.
[0082]
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Further, according to the present embodiment, by assigning the BD address as the ID
information, pairing of the left and right pair is possible with an arbitrary combination of
headphones, and only the headphones of the combination can listen to the audio according to the
audio signal. Therefore, it is excellent in secrecy. Of course, pairing is not limited to one, and a
plurality of pairings can be registered, and different audio signals may be transmitted to each
pair of paired headphones.
[0083]
Furthermore, according to the present embodiment, the voice server device 3 separates the voice
signal into the voice signal for the left ear and the voice signal for the right ear, and then encodes
it into a data format according to the communication protocol to perform time division. Since
transmission can be performed, when the left and right audio signals are transmitted on different
channels, a large amount of information, that is, a higher quality audio signal is transmitted. be
able to.
[0084]
In the present embodiment, the headphone 5 is provided with the left ear button 54a and the
right ear button 54b, respectively, and when either the left ear button 54a or the right ear button
54b is pressed, ID registration is performed. Although the case where the request signal REQ to
request and left / right identification information are generated has been described, the present
invention is not limited to this. For example, as shown in FIG. And the left ear / right ear switch
7b, and pressing the ID registration request button 7a generates a request signal REQ for
requesting ID registration, depending on the contact position of the left ear / right ear switch 7b,
Left and right identification information may be generated.
In this way, when the left ear / right ear switch 7b is disposed on the left side as viewed from the
back side of the speaker, it is attached to the right ear (FIG. 7 (b)), and the left ear / right ear
switch When 7b is disposed on the right side when viewed from the back side of the speaker, it is
worn on the left ear (FIG. 7C), so that no erroneous left / right identification information is
generated.
[0085]
Second Embodiment FIG. 8 is a schematic view showing an overview of an audio signal
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transmitting and receiving system according to a second embodiment of the present invention.
The audio signal transmission / reception system according to the second embodiment of the
present invention includes the audio server device 3, the headphone 6a for the left ear and the
headphone 6b for the right ear, and the audio server device 3 and the headphones 6a and 6b are
wireless. Perform wireless data communication.
[0086]
The headphones 6 a and 6 b have an ID registration request button 64 a for requesting the voice
server device 3 to perform ID registration at the lower part on the back side of the speaker 58.
Unlike the first embodiment, the headphones 6a and 6b are specified in advance to be either for
the left ear or for the right ear, for example, by color coding and identification names.
[0087]
FIG. 9 is a block diagram showing the configuration of an audio signal transmitting and receiving
system according to Embodiment 2 of the present invention. The headphones 6a and 6b include
a control unit 51, a ROM 62, a RAM 53, an operation unit 64, a storage unit 65, a communication
unit 56, a D / A conversion unit 57, a speaker 58, and a timer unit 59.
[0088]
As described above, the operation unit 64 includes the ID registration request button 64a, and
when the ID registration request button 64a is pressed, the control unit 51 generates a request
signal REQ requesting ID registration.
[0089]
The storage unit 65 stores ID information for identifying the headphones 6a and 6b and left /
right identification information for identifying whether the headphones 6a and 6b are for the left
ear or for the right ear.
The other configuration of the headphones 6a and 6b and the voice server device 3 are the same
as those in FIG. 2, so the corresponding parts are denoted by the same reference numerals and
10-05-2019
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the detailed description thereof will be omitted.
[0090]
FIG. 10 is a flowchart showing an outline of an operation flow at the time of ID registration of the
headphones 6a and 6b according to the second embodiment of the present invention.
[0091]
The headphones 6a and 6b determine whether ID registration is requested based on the presence
or absence of pressing of the ID registration request button 64a of the operation unit 64 (step
S41).
If the ID registration request button 64a is pressed, it is determined that ID registration is
requested (S41: YES), and a request signal REQ requesting ID registration is generated and
transmitted to the voice server device 3 (step S42) Then, the time T1 of the timer unit 59 is reset
and activated (step S43).
[0092]
After transmitting the request signal REQ, the headphones 6 a and 6 b transition to the standby
state to receive the permission signal ACK, and in order to determine whether there is a problem
in the communication state with the audio server device 3, It is determined whether the time T1
of the timer unit 59 is larger than the threshold A1 (step S44).
[0093]
When the headphones 6a and 6b determine that the time T1 of the timer unit 59 is not larger
than the threshold A1 (S44: NO), it determines whether the permission signal ACK has been
received from the voice server device 3 (step S45).
If the headphone 5 determines that the permission signal ACK has not been received from the
voice server device 3 (S45: NO), the process returns to S44. On the other hand, when it is
determined that the permission signal ACK has been received from the voice server device 3
(S45: YES), the ID information and the left / right identification information stored in the storage
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unit 65 are transmitted to the voice server device 3 (step S46). . The other flow is the same as
that in FIG. 4 and, therefore, the corresponding steps are given the same step names and the
detailed description thereof is omitted.
[0094]
As described above, according to the present embodiment, since the headphones 6a and 6b store
the ID information and the left and right identification information in the storage unit 65, the
pair is transmitted by transmitting the ID information and the left and right identification
information to the voice server device 3. The ring table 40 is updated. Therefore, as in the first
embodiment, the audio server device 3 can reliably transmit an audio signal to each of the
headphones 6a and 6b.
[0095]
In each embodiment, Bluetooth, which is a one-to-one or one-to-many short-distance wireless
communication standard using weak radio waves, is used as a communication protocol between
the audio server device 3 and the headphones 5, 6a, 6b. The communication protocol is not
limited to this, and any communication protocol may be used as long as communication is
performed using ID information that can uniquely identify the headphones 5, 6a and 6b. For
example, Ethernet (registered trademark) is used as the communication protocol. In this case, a
48-bit MAC address may be used as the ID information. In addition, the user 2 appropriately sets
identification names (alias names, user friendly names, etc.) for the headphones 5, 6 a, 6 b by the
operation unit 34 of the voice server device 3, stores them in the storage unit 35 in association
with ID information. If it is stored, an identification name that matches the ID information
registered in the pairing table 40 can be extracted from the storage unit 35, and the extracted
identification name can be displayed on the display unit 38 and notified to the user 2 .
[0096]
Furthermore, in each embodiment, after the voice server device 3 separates the voice signal into
the voice signal for the left ear and the voice signal for the right ear, it is encoded in a data
format according to the communication protocol and time-divisionally performed. Although
transmission is performed, the audio server device 3 encodes the audio signal including the audio
signal for the left ear and the audio signal for the right ear into a data format according to the
communication protocol and transmits it in a time division manner If the headphones are for the
left ear based on the left and right identification information, the audio signals for the left ear are
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extracted from the transmitted audio signals. In the case of the right ear, the audio signal for the
right ear may be extracted from the transmitted audio signal.
[0097]
Furthermore, in each embodiment, the respective headphones 5, 6a, 6b transmit the respective
ID information and left / right identification information to the audio server device 3, and the
pairing table 40 regarding the combination of the headphones is transmitted to the audio server
device 3 When the left / right identification information of the headphone registered first is for
left, the headphone to be registered next is automatically determined as being for right, without
using the left / right identification information The pairing table 40 may be registered in the
voice server device 3.
[0098]
In addition, when the left and right identification information transmitted to the voice server
device 3 by the respective headphones 5, 6a and 6b is the same information, that is, when both
are for the left ear or for both the right ear, The information is displayed on the display unit 38
of the audio server device 3 or information indicating that is generated and transmitted to the
headphones 5, 6a, 6b, and the headphones 5, 6a, 6b are for both the left ear or both the right
ear. A voice indicating the presence may be output from the speaker 58 to notify the user 2 to
that effect.
[0099]
Furthermore, when the headphone 5 is provided with two LEDs indicating for the left ear and for
the right ear, and the headphone 5 is registered in the audio server device 3 for the left ear or
the right ear, either LED is selected according to the registration. The light may be turned on to
notify the user 2.
[0100]
FIG. 1 is a schematic view showing an overview of an audio signal transmitting and receiving
system according to a first embodiment of the present invention.
It is a block diagram which shows the structure of the audio | voice signal transmission /
reception system which concerns on Embodiment 1 of this invention.
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It is a conceptual diagram which shows the content of the pairing table which concerns on this
invention.
It is a flowchart which shows the outline | summary of the operation | movement flow at the time
of ID registration of the headphones which concern on Embodiment 1 of this invention.
It is a flowchart which shows the outline | summary of the operation | movement flow at the time
of ID registration of the audio | voice server apparatus concerning Embodiment 1 of this
invention. It is a flowchart which shows the outline | summary of the operation | movement flow
at the time of ID registration of the audio | voice server apparatus concerning Embodiment 1 of
this invention. It is a schematic diagram which shows another example of the headphones which
concern on Embodiment 1 of this invention. It is a schematic diagram which shows the outline of
the audio | voice signal transmission / reception system which concerns on Embodiment 2 of this
invention. It is a block diagram which shows the structure of the audio | voice signal
transmission / reception system which concerns on Embodiment 2 of this invention. It is a
flowchart which shows the outline | summary of the operation | movement flow at the time of ID
registration of the headphones which concern on Embodiment 2 of this invention.
Explanation of sign
[0101]
1 voice signal transmission / reception system 2 user 3 voice server apparatus 31 control unit
34 operation unit 34a voice selection key 35 storage unit 35a, 35b, ... voice data 39 clock unit
36 codec unit 37 communication unit 38 display unit 40 pairing table 5, 6a , 6b, 7 Headphones
51 Control unit 54, 64 Operation unit 54a Left ear button 54b Right ear button 64a ID
registration request button 55, 65 Storage unit 59 Timekeeping unit 56 Communication unit 57
Digital / analog conversion unit (D / A conversion unit Part) 58 speakers
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