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DESCRIPTION JP2009284249

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DESCRIPTION JP2009284249
PROBLEM TO BE SOLVED: To provide a wireless communication apparatus capable of changing
voice data to be transmitted according to a connection destination in consideration of
convenience of a user. SOLUTION: A wireless communication means 112 wirelessly
communicating with an external device, a recognition means 111 recognizing a type of the
external device wirelessly communicating by the wireless communication means 112, and at
least one message sound of a key operation sound or an alert sound When the type of the
external device is recognized as a speaker by the message sound generation means 103 for
generating the message sound and the recognition means 111, the output volume of the message
sound generated by the message sound generation means 103 is the type of the external device.
A message sound control means 106 is provided to make the output sound volume lower than
when it is recognized as a headphone.
Wireless communication device
[0001]
The present invention relates to a wireless communication device.
[0002]
2. Description of the Related Art In recent years, with advances in wireless communication
technology, wireless communication devices in which a wireless communication function is
incorporated in mobile devices such as mobile phones, PDAs (Personal Digital Assistants), digital
cameras, etc. are widely spread.
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These wireless communication devices can transmit and receive audio data by connecting a
personal computer, a mobile phone, and the like without using a cable.
[0003]
Further, among these wireless communication devices, there are wireless communication devices
that select connection means according to the position information of the wireless
communication device. For example, Patent Document 1 discloses a network automatic switching
system capable of automatically selecting and setting an optimum network connection means
even while moving or at a moving destination. JP 2001-309445 A
[0004]
However, Patent Document 1 does not consider changing voice data to be transmitted according
to the connection destination. Therefore, when there are a plurality of connection counterpart
apparatuses for wireless communication, the user needs to select voice data to be transmitted
according to each of the connection counterpart apparatuses.
[0005]
For example, if the device to which audio data is transmitted is a headphone, there is a high
possibility that the user listening to the audio is one operator, and a message sound such as a key
operation sound or an alert sound is used as audio content. It is considered that it is effective for
the operator to output in superposition.
[0006]
However, if the connected device that transmits the audio data is a speaker, there may be a
plurality of users listening to the audio including the operator, and a message sound that
interferes with the desired audio content is necessarily valid. It does not have to be.
Therefore, the user who is the operator needs to select the voice data to be transmitted according
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to the device of the connection destination, which is not convenient.
[0007]
Therefore, an object of the present invention is to provide a wireless communication apparatus
capable of changing voice data to be transmitted according to a connection destination in
consideration of the convenience of the user.
[0008]
A wireless communication apparatus according to the present invention comprises at least one of
a wireless communication means for wirelessly communicating with an external device, a
recognition means for recognizing the type of the external device for wireless communication
with the wireless communication means, and at least one of a key operation sound and an alert
sound. When the type of the external device is recognized as a speaker by the message sound
generation means for generating sound and the recognition means, the output sound volume of
the message sound generated by the message sound generation means is the headphone of the
type of the external device And message sound control means for making the output sound
volume smaller than that in the case of recognition.
[0009]
According to the present invention, it is possible to provide a wireless communication apparatus
capable of changing voice data to be transmitted according to a connection destination in
consideration of the convenience of the user.
[0010]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
First, the configuration of a wireless communication apparatus according to an embodiment of
the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a diagram for explaining a wireless system in which a wireless communication apparatus
according to an embodiment of the present invention is used.
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FIG. 2 is a diagram showing an example of a system configuration of the portable terminal 100
configuring the wireless communication device according to the embodiment of the present
invention.
[0011]
The present embodiment is realized by, for example, a portable terminal 100 (wireless
communication device) which transmits audio data handled by an application such as music
reproduction to a plurality of external devices 200 to 600.
[0012]
In addition, the portable terminal 100 in the present embodiment has a function of changing
voice data to be transmitted according to an external device wirelessly connected to the portable
terminal 100.
For example, in the portable terminal 100 according to the present embodiment, when the
external device to be wirelessly connected is a headphone, a headset or the like, message sound
data is superimposed and transmitted when transmitting audio content data. Also, when the
external device to be connected wirelessly is a speaker, car audio or the like, message sound data
whose output volume is suppressed lower than the normal volume is superimposed on audio
content data, or message sound data is not superimposed. Send audio content data.
[0013]
By the function of changing the audio data to be transmitted according to the above external
device, in the present embodiment, the audio data to be transmitted can be suitably changed
according to the change of the external output device accompanying the movement of the
portable terminal 100 or the like. To improve the convenience of the user. The message sound is
voice other than audio content such as a key operation sound and an alarm sound output to the
user who is the operator.
[0014]
Further, for example, the user selects an application provided in the mobile terminal 100 using
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the operation unit 108 and the display unit 109, and wirelessly connects data handled by the
application from the antenna 113 to each external device. To send.
[0015]
In FIG. 2, speakers 200 and 400, a headphone 300, a car audio 500, and a headphone 600 will
be exemplified as respective external devices wirelessly connected to the portable terminal 100.
[0016]
The portable terminal 100 according to the present embodiment includes, for example, an audio
data generation unit including an HDD (Hard Disk Drive) 101, a codec unit 102, a message sound
generation unit 103, a message sound control unit 104, a mixing unit 105, a stream control unit
106, and the like. An interface unit 110 including an operation unit 108 and a display unit 109, a
connection destination recognition unit 111, a wireless communication unit 112, an antenna
113, and the like.
[0017]
The codec unit 102 decodes the audio content data stored in the HDD 101 and outputs the audio
content data to the mixing unit 105.
Under the instruction of the message sound control unit 104, the message sound generation unit
103 generates message sound data such as key operation sound data and alarm sound data, and
outputs the generated message sound data to the mixing unit 105.
The message sound control unit 104 executes output control of the message sound data based
on the information from the connection destination recognition unit 111.
[0018]
The mixing unit 105 superimposes the message sound data generated by the message sound
generation unit 103 on the audio content data generated by the codec unit 102 and outputs the
resultant to the stream control unit 106.
[0019]
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The stream control unit 106 performs stream control of audio data to an external device
compatible with the stream.
The stream control unit 106 controls the start / end of the stream, etc. in accordance with the
playback / stop of the audio content data, for example, by securing the link between the portable
terminal 100 and each external device capable of wireless communication connection. Execute
and make effective use of the radio band.
The stream control unit 106 also has a function of encoding the audio output from the mixing
unit 105.
[0020]
The operation unit 108 includes, for example, a cross key as an operation input unit that receives
an operation input from a user. In addition, the operation unit 108 receives a new registration of
an external device and a setting operation input of audio data to be transmitted to each external
device.
[0021]
The display unit 109 displays an application provided in the portable terminal 100, a selection
screen (not shown) of audio content data stored in the HDD 101, and the like, and assists the
operation input in the operation unit 108. Also, for example, the display unit 109 shows the user
information for selecting an external device.
[0022]
The connection destination recognition unit 111 recognizes an external apparatus capable of
wireless connection from information on peripheral devices of the portable terminal 100
obtained using, for example, the inquiry (Inquriy) function of Bluetooth. The inquiry function and
the method of recognizing the external device will be described later with reference to FIGS. 3
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and 4.
[0023]
The wireless communication unit 112 performs wireless communication with an external device
using the antenna 113 by, for example, Bluetooth. The wireless communication unit 112
transmits audio data handled by an application provided in the portable terminal 100 to an
external device by a method defined in A2DP (Advanced Audio Distribution Profile) of Bluetooth
or the like. A2DP is a profile for realizing the function of distributing advanced voice, and is used
when transmitting voice data from the transmitting device to the receiving device.
[0024]
Next, a method of recognizing an external device in the present embodiment will be described
with reference to FIGS. 3 and 4. FIG. 3 is a diagram for explaining the inquiry function of the
portable terminal 100 in the present embodiment.
[0025]
In the mobile terminal 100 according to the present embodiment, for example, the periphery of
the mobile terminal 100 is searched using the inquiry function of Bluetooth or the like, or the
service provided by the external device according to the method defined in the Bluetooth Service
Discovery Application Profile (SDAP). The external output device connectable to the portable
terminal 100 is recognized by searching for the user's input or the user's own input, and the
information related to the device is acquired. Here, the case where the external device is
recognized using the inquiry function will be described.
[0026]
Usually, when transmitting a device search signal as an inquiry function, since the unique ID
(unique address) of the external devices 200 to 600 to be connected is unknown, as shown in
FIG. The search signal is transmitted as a broadcast message independent of the device ID. At this
time, the device search signal is transmitted while changing the frequency channel at
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predetermined time intervals according to an appropriate frequency hopping sequence so as to
cover all the number of frequency channels. On the other hand, the external devices 200 to 600
in the standby state are in the standby state for this broadcast message.
[0027]
In such a situation, when the transmission frequency from the portable terminal 100 matches the
standby frequency in each external device, each external device can receive the device search
signal from the portable terminal 100, and A response signal can be returned. The response
signal includes information on the unique ID of the external device, which enables the portable
terminal 100 to designate a unique external output device in the subsequent processing.
[0028]
FIG. 4 shows information on the device of the external device included in the response signal to
the device search signal. As shown in FIG. 4, for example, the type (CoD: Class of Device) of the
external device can be determined from the information on the unique ID of the external device.
This CoD includes an 11-bit service class (Service Class) indicating the type of service provided
by a Bluetooth compatible device, a 5-bit major device class (Mejor Device Class) indicating a
rough class type of the Bluetooth device, and a major It is 24-bit data configured by a 6-bit minor
device class (Minor Device Class) indicating a detailed class type for each device class, and a 2-bit
format type (Format Type) indicating a CoD data format.
[0029]
In the mobile terminal 100 of the present embodiment, for example, the type of the external
device is determined using information of the minor device class. For example, if the type of the
external device is a speaker (Loudspeaker), the minor device class is 000101, and if the type of
the external device is headphone (Headphones), the minor device class is 000110.
[0030]
Next, with reference to FIG. 5, information related to an external device registered in the portable
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terminal 100 of the present embodiment will be described. FIG. 5 is a diagram showing an
example of information related to the external devices 200 to 600 in the present embodiment. In
FIG. 5, for example, the external device name of each external device 200 to 600, the BD
(Bluetooth Device) address of the external device, the message sound setting, and the message
volume are shown. The table shown in FIG. 5 is stored in, for example, the HDD 101 or the like.
[0031]
Further, in the portable terminal 100 of the present embodiment, the message sound setting is
basically turned ON and the message volume is set as a normal volume to the headphones 300
and the headset 500 etc. where the user is considered to be one operator. In addition, the
message sound setting is basically set to OFF for the speakers 200 and 400 and the car audio
600 where the user may be present other than the operator. The normal volume is an output
volume that can be heard even if the message sound and the audio of the audio content are
simultaneously output.
[0032]
Here, the external device name of the connection destination is the name of a device such as the
speaker 200 or the headphone 300, and is displayed on the display unit 109 when the user
directly designates the external device. The BD address of the external device is a value unique to
the Bluetooth device, and is used when the portable terminal 100 identifies the external device.
[0033]
The message sound setting indicates whether or not to output a message sound such as a key
operation sound or an alarm sound in each external device. If the message sound setting is ON,
the message sound is output, and if OFF, the message sound is not output. For example, in the
example of FIG. 5, the headphone 300, the speaker 400, and the headset 500 are set to output a
message sound. That is, the speaker 400 indicates that the user has changed the message sound
setting.
[0034]
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The message volume indicates the output volume of the message sound in each external device.
The message volume is often set to an external device whose message sound setting is ON, so
that the volume of the message sound output from each device can be adjusted.
[0035]
As shown in FIG. 5, in the present embodiment, the message volume is set to the headphone 300
and the headset 500 to a normal volume. In the speaker 400, the volume is set to "small". Here,
the "small" volume indicates a small volume as compared to a normal volume including mute.
[0036]
In addition, here, for example, the case where the message sound whose volume is controlled is
transmitted from the portable terminal 100 is shown, but the present invention is not limited to
this, the command to control the volume of the message sound is transmitted from the portable
terminal 100 to each external device You may control the message sound by doing this.
[0037]
Next, with reference to FIG. 6, the flow of the selection of the external device and the wireless
connection procedure in the present embodiment will be described.
FIG. 6 is a flowchart showing the flow of external device selection and wireless connection
procedures in the present embodiment. Here, it is assumed that the external device to be selected
is a speaker or a headphone.
[0038]
First, the connection destination recognition unit 111 of the portable terminal 100 recognizes an
external device to be connected by an inquiry function or the like (S101), and determines an
external device as a transmission destination of audio data (S102). Note that, after searching for
an external device in the vicinity, the stream control unit 106 of the portable terminal 100
establishes a link for transmitting audio data with all the external devices capable of wireless
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communication connection.
[0039]
Next, the message sound control unit 104 confirms whether the setting of the message sound
has been changed by the user (S103). When the setting of the message sound has not been
changed by the user (No in S103), the message sound control unit 104 refers to the information
from the connection destination recognition unit 111 and determines whether the external
device for outputting audio data is a headphone It is determined whether or not (S104).
[0040]
In S104, when the external device for outputting the audio content data is a headphone, the
message sound control unit 104 sets the message sound to the normal volume (S105). Then, the
stream control unit 106 starts stream transmission of audio data in which message sound data is
superimposed on audio content data, to the headphones (S106).
[0041]
Also, in step S104, when the external device for outputting audio content data is a speaker, the
stream control unit 106 starts stream transmission of audio data in which message sound data is
not superimposed on the audio content data, to the speaker. (S108).
[0042]
Here, when the setting of the message sound is changed by the user in S103 (Yes in S103), the
message sound control unit 104 refers to the table in FIG. 5 and determines whether the
message sound setting is set to ON. It confirms (S107).
[0043]
When the message sound setting is set to ON at S107 (Yes in S107), the message sound control
unit 104 sets the volume of the message sound with reference to the table of FIG. 5 (S105).
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Then, the stream control unit 106 starts stream transmission of audio data in which the message
sound data is superimposed on the audio content data, to the external device determined in S102
(S106).
[0044]
Also, if the message sound setting is set to OFF in S107 (No in S107), the stream control unit 106
does not superimpose the message sound data on the audio content data with respect to the
external device determined in S102. Data stream transmission is started (S108).
[0045]
Further, in the portable terminal 100 of the present embodiment, when receiving a switching
request of the output device during transmission of audio content data, the output switching of
the message sound is performed together with the switching of the external device of the output
destination.
[0046]
Next, with reference to FIG. 7, the flow of the process of switching the output of the message
sound in the present embodiment will be described.
FIG. 7 is a flowchart showing the flow of the process of switching the output of the message
sound accompanying the switching of the external device of the output destination in this
embodiment.
[0047]
First, the interface unit 110 of the mobile terminal 100 periodically checks whether a switching
request for an external device has been received (S201).
If the switching request of the external device has not been received (No in S201), the processing
of S201 is repeated.
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[0048]
When the switching request for the external device is received in S201 (Yes in S201), the
message sound control unit 104 checks whether the message sound data is superimposed on the
currently transmitted voice data (S202).
[0049]
If message sound data is superimposed on the voice data currently being transmitted in S202
(Yes in S202), then the message sound control unit 104 refers to the information from the
connection destination recognition unit 111 and the table in FIG. Then, it is checked whether the
message sound setting of the external device of the switching destination is ON (S203).
Here, when the message sound setting of the external device of the switching destination is ON
(Yes in S203), the stream control unit 106 causes the audio of the external device of the
switching destination to overlap with the audio content data. Data stream transmission is started
(S204).
[0050]
In S203, when the message sound setting of the external device of the switching destination is
OFF (No in S203), the message sound control unit 104 turns off the output of the message sound
data (S204).
Then, the stream control unit 106 starts stream transmission of audio data in which the message
sound data is not superimposed on the audio content data, to the external device of the switching
destination (S208).
[0051]
In S202, when the message sound data is not superimposed on the voice data currently being
transmitted (No in S202), next, the message sound control unit 104 refers to the information
from the connection destination recognition unit 111 and the table of FIG. Then, it is checked
whether the message sound setting of the external device of the switching destination is ON
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(S206). Here, when the message sound setting of the external device of the switching destination
is ON (Yes in S206), the message sound control unit 104 turns ON the output of the message
sound data (S207). Then, the stream control unit 106 starts stream transmission of audio data in
which the message sound data is superimposed on the audio content data, to the external device
of the switching destination (S204).
[0052]
In S203, when the message sound setting of the external device of the switching destination is
OFF (No in S203), the stream control unit 106 superimposes the message sound data on the
audio content data with respect to the external device of the switching destination. The stream
transmission of no voice data is started (S208).
[0053]
As described above, according to the present embodiment, it is possible to use the audio content
data at the moving destination even if the user does not perform the selection of the connection
partner device or the setting of the change with the movement of the portable terminal 100. Can
be selected, and an improvement in the convenience of the user can be realized.
[0054]
Further, in the present embodiment, when the external device to be wirelessly connected is a
headphone, a headset or the like, audio content data including message sound data is
transmitted, and the external device to be wirelessly connected is a speaker or car audio etc.
Audio content data in which message sound data whose output volume is suppressed is
superimposed or audio content data in which message sound data is not superimposed can be
transmitted.
[0055]
According to the present embodiment, in order to secure a link for transmitting audio content
data when recognizing a peripheral external device by the inquiry function or the like, the start /
end of the stream, etc. are made according to the reproduction / stop of the audio content data.
Control and effectively utilize the radio band.
[0056]
Further, in the present embodiment, when wireless connection to the selected external device is
not possible or not possible, the next candidate capable of suitably processing / outputting data
handled by the selected application is searched for wireless connection. It can start.
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[0057]
Further, in the present embodiment, when the external device to be connected wirelessly is a
speaker, car audio or the like, audio content data on which message sound data whose output
volume is suppressed is superimposed, or audio content on which message sound data is not
superimposed Data can be selected and transmitted.
[0058]
The present invention is not limited to the above embodiment as it is, and at the implementation
stage, the constituent elements can be modified and embodied without departing from the scope
of the invention.
Further, various inventions can be formed by appropriate combinations of a plurality of
constituent elements disclosed in the above embodiment.
For example, some components may be deleted from all the components shown in the
embodiment.
Furthermore, the components may be combined as appropriate in different embodiments.
[0059]
It is an example of the external appearance of the radio | wireless communication apparatus
which concerns on one Embodiment of this invention.
It is a figure showing an example of system configuration of personal digital assistant 100 which
constitutes a radio communication device concerning an embodiment of the present invention.
It is a figure explaining the inquiry function of the portable terminal 100 in this Embodiment.
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It is a figure which shows the information regarding the device of the portable terminal 100
periphery obtained using the inquiry function in this Embodiment. It is a figure which shows an
example of the information regarding the external devices 200-600 in this Embodiment. It is a
flowchart which shows the flow of selection of an external device and radio | wireless connection
procedure in this Embodiment. It is a flowchart which shows the flow of the output switching
process of the message sound accompanying switching of the external device of the output
destination in this Embodiment.
Explanation of sign
[0060]
Reference Signs List 100 portable terminal 101 HDD 102 codec unit 103 message sound
generation unit 104 message sound control unit 105 mixing unit 106 stream control unit 107
audio data generation unit 108 operation unit 109 display unit 110 interface unit 111
connection destination recognition unit 112 wireless communication unit 113 antenna 200, 400
speakers 300 headphones 500 car audio 600 headphones
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