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JP2011160104

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DESCRIPTION JP2011160104
PROBLEM TO BE SOLVED: A "hands-free voice output system that allows a user who listens to
earphones even when not using a hands-free in a car and hears in-car audio as well as possible in
the left-right balance" " SOLUTION: When using the handsfree kit or using the handsfree function
of the head unit, the head unit is provided with an earphone output unit for outputting sound to
the earphone, and the earphone output unit receives the signal when the mobile phone is
activated. While outputting a voice, when the mobile phone is not operating, the right or left
voice of the audio is output depending on whether the earphone used is for the right or left ear.
The volume from the left and right speakers of the vehicle may be adjusted accordingly. Also,
when using the hands-free kit, the in-vehicle audio is delayed according to the delay due to the
audio processing in the hands-free kit. [Selected figure] Figure 1
Hands-free voice output system
[0001]
The present invention relates to a hands-free voice output system capable of outputting an
appropriate audio to an earphone in which a mobile phone is not used in a hands-free mode used
by a driver or the like in a car.
[0002]
The driver of the vehicle is prohibited from calling directly with a mobile phone for safe driving.
09-05-2019
1
However, especially when it is necessary to move to a visiting place by car, or when returning to
work, it is often necessary to receive important calls relating to work, and it is necessary to
answer the call in the car. There are many. In this way, when you are driving a car, it is often the
case that you receive an important call not only at work but also for your personal use.
[0003]
Therefore, it is practiced to use a hands-free kit that can answer questions without holding a
mobile phone while driving a car. Although there are various types of hands-free kits, the
connection section provided in the hands-free kit and the connection section of the mobile phone
are directly connected or connected via a cord, and further, the mobile phone and the hands-free
kit When both sides have a wireless communication function such as Bluetooth, they are
connected and used by the wireless communication function.
[0004]
At that time, listen to the received voice with the earphone connected to the handsfree kit, or
output the received voice to the speaker provided in the handsfree kit, and also drive the
microphone connected to the handsfree kit to the driver in the car such as a sun visor etc. It is
often used by installing it at a position relatively close to the mouth of the patient. As a result,
when the mobile phone arrives, the driver can talk to the other party of the mobile phone to talk
with the person in the car.
[0005]
In recent years, a head unit or the like provided with the function of the above-described handsfree kit has also been used as a function of an audio device of a vehicle. Various kinds of handsfree audio devices are also used, but as in the case of the hands-free kit, connection is made using
a connection cord with a mobile phone, or wireless such as Bluetooth can be used for both
mobile phones and vehicle audio devices. When the communication function is provided, it is
connected and used by the wireless communication function.
[0006]
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2
At that time, the user listens to the received voice with a speaker provided for audio in a car, or
connects an earphone to an earphone jack provided in a head unit or the like, and listens for the
received voice with the earphone. Also, the microphone is connected to the external input
terminal provided in the head unit or the like, and the microphone is installed near the driver's
mouth and used, as in the case of using the hands-free kit.
[0007]
Furthermore, when there is a head unit provided with the wireless communication function as
described above, even if the head unit is not provided with the handsfree function as described
above, a mobile phone equipped with a wireless communication function and a wireless
communication function are provided. When the provided hands free kit is present, the wireless
communication function of the head unit outputs the received voice of the mobile phone from
the speaker, or outputs it from the earphone provided in the hands free kit. At that time, the
user's uttered voice will be output to the mobile phone using the microphone connected hands
free or using the voice input microphone of the navigation device already provided in the head
unit etc. .
[0008]
As described above, in the car, the hands-free function is used in the car, whether the mobile
phone has the wireless communication function, the head unit has the wireless communication
function, and the head unit has the hands-free function. Whether it is attached or not, whether
the handsfree kit is used in the car, whether the handsfree kit has a wireless communication
function, the received voice of the mobile phone is output from the in-car speaker or the
earphone, the microphone is the head There may be many different forms of combination, such
as using one connected to the unit or using one connected to the hands-free kit.
[0009]
In addition, when using hands-free in a car, it is difficult for other people to hear received voices
by adjusting the phase so that the output sounds of the multiple speakers provided in the vehicle
compartment emphasize the driver. A technique that has been made is disclosed in Patent
Document 1.
[0010]
JP, 2004-112528, A
09-05-2019
3
[0011]
As described above, there are various modes in which the mobile phone is used using the
handsfree function in the car, but among them, in the case of outputting the received voice of the
mobile phone from the speaker, another person rides in the car When you are on the road, it is
uncomfortable for the passenger to hear the voices of others who are not related to you from the
speaker, and for those who use hands-free, other people can hear private conversations. Yes
there are many.
[0012]
Therefore, the earphones are often used, but when using the hands-free kit at that time, when the
user likes and purchases a specific hands-free kit out of a large number of kits, Or if you don't
know when your important phone will come to you sometime, you may want to drive with your
earphones always on your ear.
[0013]
In this case, when the mobile phone is not on the driver, the ear wearing the earphones is hard to
receive other external sounds, so when the audio is flowing from the speaker in the car, the
earphones are being worn It is difficult to hear the audio in the ear, and despite the fact that the
audio with adjusted left and right volume is flowing in the car, you will have to listen to the
unbalanced audio.
[0014]
Such a situation is the same as when using a hands-free kit or when using a head unit with a
hands-free function, and is an issue that occurs regardless of whether or not it has a wireless
communication function. is there.
[0015]
Therefore, the present invention uses hands-free in the car, and for the user who listens to the
earphones even when the telephone is not received, the sound output for the hands-free that the
audio in the car can be heard as well as left and right The main purpose is to provide a system.
[0016]
In order to solve the above problems, the hands-free voice output system according to the
present invention includes an earphone output unit that outputs voice of a mobile phone to an
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4
earphone, a microphone voice input unit that outputs voice from a microphone to a mobile
phone, and Speaker output unit for outputting audio to the left and right speakers, a
communication unit for connecting the mobile phone and the head unit of the vehicle to enable
transmission and reception of voice, and a mobile phone for detecting that the mobile phone is
operating When the operation detection unit and the mobile telephone operation detection unit
do not detect that the mobile phone is operating, the earphone output unit corresponds to
whether the earphone being used is for the right ear or the left ear, And a voice switching output
unit for earphones for outputting the right or left voice of the audio.
[0017]
Another hands-free voice output system according to the present invention is the hands-free
voice output system, wherein the earphone output unit and the microphone voice input unit
include a communication unit that enables transmission and reception of voice with the head
unit. It is characterized in that it is provided in the hands-free kit.
[0018]
Another hands-free voice output system according to the present invention is the hands-free
voice output system, in which the mobile phone is communicably connected to a head unit via a
communication unit of the hands-free kit. It features.
[0019]
Another hands-free voice output system according to the present invention is characterized in
that, in the hands-free voice output system, the mobile phone is connected to be able to directly
communicate with the head unit.
[0020]
Another hands-free voice output system according to the present invention is the hands-free
voice output system, wherein detection of whether the earphone is for the right ear or for the left
ear is performed by the head unit communicating with the hands-free kit. It is characterized by
carrying out by taking in the type of hands-free kit.
[0021]
Another hands-free voice output system according to the present invention is the hands-free
voice output system, wherein when audio is being output to the earphone, audio to be output to a
speaker in a car is delayed for voice processing of the hands-free kit. And a delay unit for
delaying the signal.
09-05-2019
5
[0022]
Another hands-free voice output system according to the present invention is the hands-free
voice output system, wherein the earphone output unit and the microphone voice input unit are
provided in the head unit, and the mobile phone can directly communicate with the head unit. It
is characterized in that it is connected to.
[0023]
Another hands-free voice output system according to the present invention is the abovementioned hands-free voice output system, wherein when the right or left voice of the audio is
being output to the earphone, the speaker in the car corresponding to the output. A speaker
volume control unit is provided to increase the volume of the right or left side of the audio to be
output.
[0024]
Since the present invention is configured as described above, a user who uses handsfree in a car
and listens to the earphones even while not receiving a call can hear the audio in the car with as
good balance as possible in the car become able to.
[0025]
It is a functional block diagram of the example of the present invention.
It is an operation | movement flowchart of the example.
FIG. 7 is a functional block diagram of another embodiment of the present invention.
FIG. 7 is a functional block diagram of still another embodiment of the present invention.
It is an operation | movement flowchart of the example.
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6
[0026]
An embodiment of the present invention will be described with reference to the drawings.
In addition, the present invention can be implemented in various modes as long as the earpiece is
put on the ear even when the mobile phone is not using the hands-free function, in which case
the mobile phone has the wireless communication function Whether or not the head unit has a
wireless communication function, and whether the head unit has a hands free function or not,
use a hands free kit in the car, or use the hands free function of the head unit, or hands free kit
Whether the wireless communication function is included or not, the earphones are connected to
the handsfree kit or the head unit, the microphones are connected to the head unit, the
microphones are connected to the handsfree kit, etc. It can be used in combination in numerous
forms.
[0027]
Among them, the head unit used in the vehicle is the one with wireless communication function
such as Bluetooth among them, and the hands-free kit with the wireless communication function
is carried in the car, whereby the head unit is especially It is not necessary to have a hands-free
function, and an example is shown when a microphone and an earphone are connected to the
hands-free kit and a mobile phone with a wireless communication function is used by bringing it
into a car.
[0028]
The head unit 11 with a wireless communication function shown in FIG. 1 includes, for example,
an output audio 12 of a CD, a DVD audio, a radio, a television, a memory card connected to the
head unit, a portable audio device, various disc changers, etc. In general, the in-vehicle speaker
output unit 14 of the audio output control unit 13 can normally output to the in-vehicle speaker
system.
[0029]
In the illustrated example, the in-vehicle speaker output unit 14 can output the output audio 12
from the speaker volume adjustment unit 20 via the delay unit 19 used as needed as described
later.
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Further, in the illustrated example, the in-vehicle speaker output unit 14 can also output the
received voice of the mobile phone from the speakers 30, 31 so that it can be used according to
the preference of the user or when only the driver is in the vehicle. An example is shown in
which the received voice to be output to the earphone can also be input from the earphone voice
switching / output unit 17.
[0030]
The audio output control unit 13 includes the earphone output unit 15 in addition to the in-car
speaker output unit 14, and in particular, the earphone 34 of the hands free kit 35 with a
wireless communication function as described later An audio for output from the in-vehicle
speaker output unit 14 can also be output using the wireless communication function.
However, as described later, the earphone 34 outputs such audio only when the mobile phone is
not used.
[0031]
In the example shown in FIG. 1, the audio output control unit 13 is provided with a received
voice output destination switching unit 16, and the user's instruction input is performed by a
signal from the switching instruction unit 32. The output from the earphone output unit 15 to
the earphone can be arbitrarily switched.
Thus, when there is an instruction from the switching instruction unit 32 to output the received
voice from the speakers, the in-vehicle speaker output unit 14 outputs the received sound to the
left and right speakers 30 and 31.
In this case, when the audio is being output from the in-vehicle speaker output unit 14, the audio
output is automatically switched to the received voice.
[0032]
On the other hand, when the switching instruction unit 32 instructs to output the received voice
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8
to the earphone, either the received voice of the mobile phone from the earphone voice switching
output unit 17 or the output audio 12 described later. The voice can be transmitted to the
earphone 34 of the hands-free kit 35 with a wireless communication function by wireless
communication and can be output.
[0033]
In the earphone audio switching / output unit 17 in the audio output control unit 13, the in-car
speaker output unit 14 and the earphone output unit 15 are either the audio for output 12 or the
voice received from the mobile telephone 41 with a wireless communication function. It is
switching and outputting.
Also, when the earphones included in the handsfree kit connected to the head unit are detected
for the right ear or for the left ear by the handsfree kit earphone left / right detection unit 23
described later, the earphones are detected according to the detection result For the type using
the right ear earphone, the audio output to the right speaker is output, and for the type using the
left ear earphone, the audio output is output to the left speaker.
At this time, the reception voice output destination switching unit 16 switches whether to output
from the in-vehicle speaker or to the earphone as described above.
[0034]
In the mobile phone operation detection unit 18, a signal in which the mobile phone with
wireless communication function 41 is used is input from the reception unit 25 of the wireless
communication unit 24, and at the time of the input, the voice switch output unit 17 for
earphones is input. Output.
Thus, the earphone sound switching output unit 16 performs the switching operation as
described above.
[0035]
In the delay unit 19, when the audio output switching unit 17 for earphones outputs audio for
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9
earphones, and the reception audio output destination switching unit 10 actually outputs the
audio from the earphone output unit 15 to the earphones 34 The audio whose volume is
adjusted from the speaker volume adjustment unit 20 is delayed and output from the in-vehicle
speaker output unit 14 to the left and right speakers 30 and 31.
[0036]
The delay time at this time is transmitted from the earphone output unit 15 to the reception unit
40 of the hands-free kit 35 with the wireless communication function via the transmission unit
26 of the wireless communication unit 24, and the audio received in the hands-free kit is voiced
Since there is a time delay until processing and output to the earphone 34, there is a time
difference between the audio heard from the earphone 34 and the audio heard from the speakers
30 and 31 in the car, and the audio becomes hard to hear, so ordinary hands The delay unit 19
delays by the delay time of internal processing that occurs in the free kit.
[0037]
The speaker volume adjustment unit 20 adjusts the volume of the left speaker 30 by the left
volume adjustment unit 21, and adjusts the volume of the right speaker 31 by the right volume
adjustment unit 22.
As described above, the earphone used by the hands-free kit with a wireless communication
function connected to the head unit is used for the right ear by the hands-free kit earphone left /
right detection unit 23 as described above. When it is detected that it is for the right ear, the
volume of the right speaker 31 is raised, and when it is detected that it is for the left ear, the
volume of the left speaker 30 is raised.
However, this function may be canceled when another person is in the car.
[0038]
As a result, when the telephone is not being received, the audio on the side where the earphone
is put as described above is output to the earphone as described above to balance the left and
right volume, but the sound quality is large with the audio in the car Because it is different, the
volume on the side where the earphones are hung is not increased so much, and the volume of
09-05-2019
10
the speaker is increased accordingly to assist the deterioration of the sound quality.
However, without using this function, it may be possible to just balance the left and right volume
heard by the ear just by raising the volume of the earphone.
[0039]
When the wireless communication unit 23 of the head unit 11 with the wireless communication
function is connected to the hands-free kit or the mobile phone in a wirelessly communicable
manner by this head unit and, for example, Bluetooth etc. Thus, the communication destination is
identified and the data transmission destination is specified.
The receiving unit 25 receives a signal or data of transmission destination designation from each
device, and the transmitting unit 26 transmits the signal or data by specifying the device of
transmission destination.
[0040]
The receiving unit 25 of the wireless communication unit 24 shown in the figure outputs the
incoming call signal to the mobile phone operation detection unit 18 when receiving a signal
from the wireless communication function-equipped mobile phone 41 when an incoming call is
received, and switches the voice for earphones when the received voice is input. It is output to
the output unit 17 to perform the processing as described above.
Further, when the user's voice signal is received from the microphone 33 of the wireless
communication function-equipped hands-free kit 35 at the time of use of the telephone, it is
transmitted from the transmission unit 26 to the wireless communication functional mobile
phone 41 as it is.
[0041]
As described above, the transmitting unit 26 transmits the sound of the microphone of the
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11
hands-free kit with wireless communication function 35 to the mobile communication with the
wireless communication function as described above, and is output from the earphone output
unit 15. When the mobile phone is not in use, the output audio 12 as described above is
transmitted to the hands-free kit 35 with a wireless communication function.
The switching of the communication destination as described above in the wireless
communication unit 24 is performed by detecting and switching the type and content of the
signal to be transmitted and received on the hands-free kit side 28 and the mobile phone side 29
in the communication destination switching unit 27. .
[0042]
In addition, when the received voice from the wireless communication function-equipped mobile
phone 41 is switched to the earphone output unit 15 by the received voice output destination
switching unit 16 when using the mobile phone, the hands-free kit 35 with the wireless
communication function is used. It is made to be able to hear from the earphone 34 without
transmitting and outputting received voice from the speakers 30, 31.
[0043]
In the hands-free kit with wireless communication function 35 shown in FIG. 1, the original
portable device input from the earphone output unit 36 to the earphone 34 connected thereto
via the receiving unit 40 of the wireless communication unit 38. The reception section 40
outputs the received voice of the telephone, and when the mobile phone is not used and the
audio is output from the in-car speaker, the audio is output according to whether the earphone is
for the right ear or the left ear. To receive and output to the earphones.
[0044]
In the microphone voice input unit 37, the voice of the microphone 33 connected thereto is
input, and from the transmission unit 39 of the wireless communication unit 38 to the reception
unit 25 in the wireless communication unit 24 of the head unit and further via the transmission
unit 26. It is transmitted to the wireless communication unit 42 of the mobile telephone 41 with
a wireless communication function, and the user's voice is transmitted to the other party by the
mobile telephone.
[0045]
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12
In the transmitting unit 39 of the wireless communication unit 38 of the hands-free kit 35 with
the wireless communication function, the voice of the microphone 33 from the microphone voice
input unit 37 is transmitted to the wireless communication unit 24 of the head unit 11 with the
wireless communication function. To send.
Further, the receiving unit 40 receives audio and telephone reception voice to be output to the
earphone output unit 36 as described above, which is transmitted from the transmitting unit 26
of the wireless communication unit 24 of the head unit.
[0046]
The mobile phone 41 with a wireless communication function is equipped with a wireless
communication function such as Bluetooth, and when it is brought into the car, wireless
communication with the head unit 11 with a wireless communication function becomes possible
in the illustrated example. A signal indicating that the mobile phone has received or is in use is
transmitted to the wireless communication unit 24.
In addition, the received voice of the mobile phone is also output to the wireless communication
unit 24 of the head unit, and various processing as described above is performed.
The receiving unit 44 receives the voice of the microphone from the wireless communication unit
of the head unit, and transmits the voice from the mobile phone to the other party.
[0047]
In a system comprising functional blocks as described above, the present invention and other
functions can be implemented by the operation flow shown in FIG.
In the audio output process for earphones when using the hands-free kit with wireless
communication function shown in FIG. 2, first, the hands-free kit and the head unit are wirelessly
connected (step S1).
09-05-2019
13
This is because, for example, when both are connected by wireless communication of Bluetooth,
when the communicable range is reached, it is possible to automatically communicate with each
other.
Thereafter, the type of hands-free kit is taken in by the head unit (step S2).
In this operation, the hands-free kit earphone left / right detection unit 23 of FIG. 1
communicates with the wireless communication function-equipped hands-free kit 35 wirelessly
connected with the wireless communication unit 24 of the head unit and the wireless unit such
as Bluetooth. This can be done by incorporating the type of free kit. As a result, it is determined
whether the audio to be transmitted to the hands-free kit to be described later is to be used for
the right side or the left side.
[0048]
Next, the mobile phone determines whether an incoming call has arrived (step S3). Although it is
possible to detect whether or not the user has called the mobile phone here, it is not always the
case that the other party will answer the phone just by calling When the voice of is received, it
may be determined that the mobile phone has arrived. This operation is performed as described
above in the mobile phone operation detection unit 18 of FIG.
[0049]
When it is determined in step S3 that the mobile phone has not received a call, it is determined
whether the received voice output destination is an earphone (step S4). In this example, in the
example of FIG. 1, according to the user's instruction from the switching instruction unit 32,
whether the received voice output destination switching unit 16 is setting the received voice of
the telephone to the in-car speaker output unit 14 side or the earphone output unit 15 side. It
does by detecting whether it is.
[0050]
When it is determined in step S4 that the received voice output destination is not the earphone,
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14
that is, for example, when only the driver is on the vehicle, or even if another person is on the
vehicle, I thought that I do not want to use the earphone In such a case, the reception voice
output destination is set to the in-vehicle speaker, but in that case, the process returns to step S3
to repeat the above operation. When the incoming call voice is switched from the earphone
output unit 15 side in the process, it is determined that the received voice output destination is
the earphone in this step S4, and the received voice output destination is the earphone from the
beginning When the determination is made, the process proceeds to step S5.
[0051]
In step S5, it is determined whether the in-vehicle audio is being output or not. When it is
determined that the in-vehicle audio is not output, the process returns to step S3 to repeat the
above operation. When the user performs an operation to listen to the in-vehicle audio in the
process, it is determined in step S5 that the in-vehicle audio is being output, and when it is
determined from the beginning that the in-vehicle audio is being output, the process proceeds to
step S6.
[0052]
In step S6, it is determined whether or not the hands-free kit being used has an earphone for the
right ear, and as described above, the capturing of the hands-free kit type in step S2 and data of
the head unit provided in advance Thus, it is detected whether the connected hands-free kit is for
the right ear or the left ear. This operation is performed by the hands-free kit earphone left /
right detection unit 23 of FIG. 1 as described above.
[0053]
When it is determined that the hands-free kit used in step S6 has an earphone for the right ear,
the voice for the in-car right speaker is output to the earphone (step S7). After that, the volume of
the right speaker in the car may be adjusted to a higher level. That is, even if the mobile phone
does not receive an incoming call, the user whose ear is covered with the earphone of the handsfree kit is blocked by the earphone and the audio in the car is hard to hear by the person wearing
the earphone As mentioned above, when the in-vehicle audio on the hard-to-hear side is output to
the earphone to balance the left and right, and when the volume is too much to the earphone for
the balance, the sound quality with the speaker in the vehicle differs greatly It makes the audio
09-05-2019
15
difficult to hear. As a result, the volume on the audio side, which is difficult to hear by the
earphones on the speaker side in the car, is increased to allow the user using the earphones to
adjust the volume and the sound quality as well as possible. This operation can be performed in
the speaker volume control unit 20 of FIG. However, this function may be canceled when another
person is in the car.
[0054]
If it is determined in step S6 that the handsfree kit being used is not equipped with the right ear
earphone, that is, if it is determined that the handsfree kit being used is equipped with the left
ear earphone, in step S8 The voice for the left speaker in the car is output to the earphone. Also
at this time, for the same reason as described above, the volume of the left speaker in the car
may be adjusted to be large.
[0055]
After performing the operations of the steps S7 and S8, the in-vehicle audio output is delayed
according to the delay of the earphone kit (step S9). This operation causes a slight delay in the
audio processing of the handsfree kit when the in-car audio is output to the earphones of the
handsfree kit in the delay unit 19 of FIG. As it becomes unnatural, the audio on the in-car speaker
side is delayed by that amount and output is adjusted. After the process of step S9, the process
returns to step S3 again to wait for an incoming call of the mobile phone, and the above
operation is repeated unless an incoming call is received.
[0056]
If it is determined in step S3 that the mobile phone has received an incoming call, it is
determined whether the received voice output is set to the in-vehicle speaker (step S10) and it is
determined that the received voice output is not set to the in-vehicle speaker, ie When it is
determined that the earphones are set, in step S11, the received voice is output from the
earphones. On the other hand, when it is determined that the received voice output is set to the
in-vehicle speaker, the received voice is output from the in-vehicle speaker in step S12. These
operations are either instructed by the user from the switching instruction unit 32 of FIG. 1 to
the received voice output destination switching unit 16 or from the in-car speaker output unit 14
side or by the earphone output unit 15. It is done by selecting and outputting.
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16
[0057]
After performing the operation as described above in step S11 and step S12, it is determined
whether the call is ended (step S13), and when it is determined that the call is not ended yet, the
process returns to step S10 and the operation is performed. repeat. When the user switches the
output destination of the received voice output in the process, the received voice is output from
the corresponding output destination. When it is determined in step S13 that the call has ended,
the process returns to step S3 to determine again whether or not the mobile phone has received
a call, and the above operation is repeated.
[0058]
In the example shown in FIG. 1, the head unit, the handsfree kit, and the mobile phone are all
provided with the wireless communication function such as Bluetooth, but the mobile phone is
provided with the above wireless communication function. When not, the invention can be
implemented, for example, by a system as shown in FIG. That is, in the example shown in FIG. 3,
the mobile phone is directly connected to the handsfree kit 35 with a wireless communication
function by a connection cord, and the wireless communication unit 39 of this handsfree kit and
the wireless communication unit 24 of the head unit are communicated. I want to do it.
[0059]
The difference between the system shown in FIG. 3 and the system shown in FIG. 1 is that the
mobile phone does not directly communicate with the head unit, so that the communication
destination switching unit 27 in FIG. The communication hands-free kit is different in that it is
provided with a mobile phone connection unit 38 and is connected to the mobile phone 45 by
communication means other than wireless communication. Thereby, the received voice of the
mobile phone is output from the earphone output unit 36 to the earphone in the handsfree kit,
and the voice of the microphone 33 is output from the microphone voice input unit to the mobile
phone 45 via the mobile phone connection unit 38.
[0060]
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17
In this system as well, when you are not using a mobile phone and you are listening to the
earphones of the hands-free kit and listening to audio from speakers in the car, the audio
matched to whether the earphones are for the right or left ear is the head The sound is output
from the unit side, and if necessary, the speaker in the car can be adjusted in volume according
to whether the earphone is for the right or left ear, and can be output. The operation of the other
head units is the same as in FIG. 1, and the same functional units as in FIG. 1 are denoted by the
same reference numerals, and the description thereof is omitted here.
[0061]
FIG. 4 shows an example when the head unit is provided with a hands-free function and the
mobile phone is connected by wireless as described above or by a connection cord or the like as
still another aspect of the present invention. In this example, since the head unit is provided with
the handsfree function, the microphone 67 is connected to the microphone voice input unit 53,
and the voice is output from the transmission unit 66 of the communication unit 64 to the
reception unit 75 inside the mobile phone. ing. The microphone at this time may have a
navigation function in the head unit itself, or may use a microphone provided for voice input
when a navigation device is connected.
[0062]
Further, the earphone 70 is also connected to the earphone output unit 56 of the head unit, and
as in the example of FIG. 1, the earphone voice switched by the earphone voice switching output
unit 59 is received by the received voice output destination switching unit 57 When switching to
the 56 side, when the mobile phone is not in use, the audio output from the in-car speaker can be
output to the earphone 70.
[0063]
In the example of FIG. 4, since the handsfree kit is not used, the audio to the earphone does not
have a large delay with the audio from the in-vehicle speaker, and thus the delay unit 19 in FIG. 1
is not provided.
In addition, since the handsfree kit is not provided, detection of the handsfree kit type is not
performed, but it is not always determined whether the earphone 70 connected to the head unit
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is used for the left or right In the example shown in the figure, the earphone left / right setting
unit 58 is provided, and the user uses the used earphone left / right instruction unit 72 to
instruct whether the currently used earphone is for the right or left ear. It is set to. According to
the setting, in the speaker volume adjustment unit 61, the volume adjustment of the left and
right speakers in the car is performed as in the example of FIG.
[0064]
The communication destination switching unit 27 of the wireless communication unit 24 in the
head unit of FIG. 1 is not provided because only a mobile phone communicates with the head
unit. Others are the same as the example of FIG. 1, so detailed description will be omitted.
[0065]
In the example shown in FIG. 4, it can implement by the operation | movement flow shown, for
example in FIG. Also in the example shown in FIG. 4, the operation float is basically the same as
that of FIG. 2 described above, except that the head unit incorporates the type of hands-free kit in
step S2 of FIG. In the example of, the right and left use of the earphone is set in step S2. In this
operation, the earphone left / right instruction unit 72 shown in FIG. 4 instructs whether the
earphone currently used by the user is for the right or left ear, and the earphone left / right
setting unit 58 performs the setting. Is implemented by
[0066]
The operation float of FIG. 5 differs from the operation flow of FIG. 2 in that the handsfree kit
used in step S6 of FIG. 1 determines whether or not the right ear earphone is attached. In the
example of 5, the setting of the earphone left / right setting unit 58 is detected, and it is
determined whether the earphone is used for the right ear. Also, in the example of FIG. 2, the incar audio output is delayed according to the delay of the earphone kit in step S9, but in the
example of FIG. . However, when delaying similarly to the hands-free kit, a delay unit may be
provided. The other operations are the same as those in FIG.
[0067]
As described above, the present invention uses the handsfree kit in a car, whether the mobile
09-05-2019
19
phone has the wireless communication function, whether the head unit has the wireless
communication function, and whether the head unit has the handsfree function. Whether the
handsfree kit has wireless communication function, microphones or earphones are used by
connecting to the head unit, whether they are connected to the handsfree kit, etc. It can be
implemented in a configuration.
[0068]
11 Head unit with wireless communication function 12 Audio for output 13 Audio output control
unit 14 In-car speaker output unit 15 Earphone output unit 16 Reception voice output
destination switching unit 17 Voice switching output unit for earphone 18 Mobile phone
operation detection unit 19 Delay unit 20 Speaker Volume adjustment unit 21 left volume
adjustment unit 22 right volume adjustment unit 23 hands-free kit earphone left / right detection
unit 24 wireless communication unit 25 reception unit 26 transmission unit 27 communication
destination switching unit 28 hands-free kit side 29 mobile phone side 30 left speaker 31 right
side Speaker 32 switching instruction unit 33 microphone 34 earphone 35 hands free kit with
wireless communication function 36 earphone output unit 37 microphone voice input unit 38
wireless communication unit 39 transmitting unit 40 receiving unit 41 mobile phone with
wireless communication function 42 wireless communication unit 43 transmitting unit 44
Receiver
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