JP2011228828

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DESCRIPTION JP2011228828
An object is to provide an on-vehicle acoustic control device capable of performing an acoustic
setting according to movement of a portable terminal device even when the portable terminal
device starts a call in a vehicle compartment. Do. A reception device (3) determines whether a
portable terminal device (2) in a vehicle compartment is in a call, and when it is determined by
the reception device 3 that a portable terminal device in a vehicle compartment is in a
conversation And a control device 4 that identifies a seat on which the user of the portable
terminal device 2 sits and controls the sound in the vehicle cabin based on the identified seat
position. [Selected figure] Figure 4
Automotive acoustic control device
[0001]
The present invention relates to an on-vehicle acoustic control device for controlling the setting
of sound in a vehicle compartment when music is being reproduced in a vehicle compartment of
a vehicle and a call is being made using a portable terminal device in the vehicle compartment. It
is a thing.
[0002]
As a conventional on-vehicle acoustic control device, the portable terminal device existing in the
vehicle compartment is wirelessly communicated in advance, and the telephone number of the
portable terminal device and the riding position of the owner of the portable terminal device are
wirelessly mounted on the vehicle. There is one that transmits to the sound control device and
registers it in the memory of this device.
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[0003]
When an incoming call arrives at the portable terminal device, the incoming call notification
number is compared with the telephone number information registered in the memory.
As a result of this comparison, when the portable terminal device that has received an incoming
call is specified, the riding position of the owner of the portable terminal device can also be
detected from the information registered in the memory.
There are some which control the output level of sound for every speaker based on the detected
boarding position.
[0004]
In addition, as a prior art document regarding the invention of this application, patent document
1 is known, for example.
[0005]
JP 2001-313698 A
[0006]
The above-mentioned conventional on-vehicle acoustic control device controls the setting of the
acoustic based on the riding position of the owner of the portable terminal device registered in
advance before the start of the call.
However, the owner of the portable terminal device is not always present at a certain position,
and it is conceivable that the position may move after the portable terminal device receives an
incoming call after registration.
[0007]
In such a case, the conventional in-vehicle acoustic control device can not control the sound
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setting according to the riding position because the position information of the registered
portable terminal device and the portable terminal during the actual call are different. Had the
problem of
[0008]
The present invention has been made to solve the conventional problems, and it is an object of
the present invention to provide an on-vehicle acoustic control device capable of performing
acoustic setting according to the movement even if the portable terminal device moves. Do.
[0009]
In order to achieve the above object, the vehicle-mounted acoustic control device of the present
invention specifies a seat on which a user of the portable terminal device can sit when it is
determined by the communication determining means that the portable terminal device in the
vehicle compartment is talking. The sound in the passenger compartment is controlled based on
the identified seat position.
[0010]
The automatic sound control apparatus according to the present invention identifies a seat on
which the user of the portable terminal device sits when it is determined that the portable
terminal device in the vehicle compartment is in a call, and the in-vehicle compartment is
determined based on the identified seat position. Therefore, even if the user of the band terminal
device moves, the sound is controlled at the position after the movement.
By this, even if the mobile terminal device moves, it is possible to set the sound according to the
movement.
[0011]
A block diagram of a vehicle-mounted acoustic control apparatus according to an embodiment of
the present invention. Description of installation of a vehicle-mounted acoustic control apparatus
according to an embodiment of the present invention in a vehicle compartment. The figure which
explains the operation of the on-vehicle acoustic control device in one form of this invention The
figure which explains the table in order to do acoustic control
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[0012]
Hereinafter, an on-vehicle acoustic control apparatus according to an embodiment of the present
invention will be described with reference to FIGS. 1 to 3.
[0013]
FIG. 1 is a block diagram of a vehicle-mounted acoustic control apparatus according to an
embodiment of the present invention.
Moreover, FIG. 2 is a figure explaining installation in the vehicle interior of a vehicle-mounted
acoustic control apparatus.
FIG. 3 is a view for explaining a radio signal transmitted from the portable terminal device.
[0014]
In FIG. 1, the in-vehicle acoustic control device 1 corresponds to a receiving device 3
(communication determining means) that receives a radio signal transmitted to a base station by
a portable terminal device 2 (for example, a mobile phone) existing in a vehicle compartment.
And, when it is determined by the receiving device 3 that the portable terminal device 2 is in a
call, the position of the seat where the caller is sitting (hereinafter referred to as the seat
position) is specified, and the car is A control device 4 for controlling the sound in the room
(corresponding to a talker seat specifying means and a sound control means) is provided.
[0015]
Here, the sound control in the passenger compartment means adjusting the volume of the sound
signal (voice, music, etc.) to be output, and changing the frequency characteristic of the sound
signal to be output.
The control device 4 does not prevent the caller from disturbing the call by the music being
played, and for the passengers other than the caller, it is possible to hear the sound in the vehicle
room so that the music can be enjoyed as before the start of the call. Take control.
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[0016]
The receiver 3 is connected to an antenna 5 disposed in the vicinity of a seat in the vehicle
compartment.
As shown in FIG. 2, the antenna 5 is divided into four areas (area A, area B, area C, area D) in
which the space in the vehicle compartment is made to correspond to the seats 6 (6a, 6b, 6c, 6d).
The antenna for receiving the radio signal transmitted by the mobile terminal device 2 in each of
the regions.
[0017]
For example, as shown in FIG. 2, the antennas 5a, 5b, 5c and 5d are disposed in the vicinity of
each door of the vehicle.
The antenna 5 may be disposed one by one near each seat depending on the size of the vehicle
and the number of seats.
[0018]
The receiving device 3 detects the transmission timing of the radio signal transmitted from the
portable terminal device 2 received by the antenna 5.
FIG. 3 is a view showing the state of the radio signal transmitted from the portable terminal
device 2.
[0019]
When the mobile terminal device 2 is in a call, the mobile terminal device 2 transmits a radio
signal to the base station transmitting the strongest radio signal among the base stations in the
vicinity of the mobile terminal device 2 and so on. Since transmission and reception are
performed, radio signals are constantly transmitted (T2 to T3 in FIG. 3).
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[0020]
On the other hand, when the portable terminal device 2 is not talking, that is, when it is on
standby (T1 to T2 in FIG. 3 and T3 to T4 in FIG. 3), the portable terminal device 2 transmits the
wireless signal to the base station. I have hardly made any outgoing calls.
[0021]
At the time of stand-by (T1 to T2 in FIG. 3 and T3 to T4 in FIG. 3), the portable terminal device 2
only intermittently receives radio signals with the base station, and the frequency of
communication is less than that during a call Become.
[0022]
Therefore, it is possible to determine whether or not a call is in progress by detecting the
frequency of communication of the wireless signal.
If the transmission timing of the wireless signal transmitted from the portable terminal device 2
obtained from the antenna 5 is continuous, the portable terminal device 2 is in the
communication area corresponding to the antenna 5 that has received the continuous wireless
signal. It can be determined that a call is in progress.
[0023]
On the other hand, if the transmission timing of the radio signal transmitted from the portable
terminal device 2 obtained from the antenna 5 is not continuous but is a radio signal transmitted
singly, the antenna 5 having received the radio signal It can be determined that the portable
terminal device 2 is in the standby state in the communication area corresponding to.
[0024]
When it is determined that the portable terminal device 2 is in a call in any of the communication
areas, the control device 4 can identify that the caller is sitting in a seat in the vehicle
compartment in the communication area.
[0025]
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Depending on the seat of the caller identified as described above, the control device 4 does not
prevent the caller from disturbing the call by the music being played, and the call starts for the
passenger other than the caller. Control the sound in the cabin automatically so that you can
enjoy the music as before.
This sound control is called "on-call sound control".
[0026]
The in-call sound control is performed by the control device 4 reading out the sound control
value which is the setting value stored in the storage device 8.
The sound control value corresponding to the speaker closest to the seat position of the caller is
referred to as a first sound control value, and the sound control value corresponding to a speaker
other than the speaker is referred to as a second sound control value.
[0027]
For example, the first sound control value stored in the storage device 8 can be set to turn off the
sound volume, and the second sound control value can be set to output at a predetermined sound
volume.
[0028]
The control device 4 is connected to speakers 7 (7a, 7b, 7c, 7d) provided in the vehicle as shown
in FIG.
The control device 4 turns off the volume of the speaker closest to the seat position of the caller,
and outputs music and the like from the speakers other than the speaker.
[0029]
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By doing this, the caller of the portable terminal device 2 can comfortably make a call without
being disturbed by the music being played back, and the other fellow passengers can also make a
call before the call is started. Similarly, you can enjoy the music being played in the car room
comfortably.
[0030]
In addition, when the in-call sound control by the control device 4 is executed, the storage device
8 uses information such as the volume of the music being played back at that time and the
setting of the equalizer as the pre-call sound setting. It can be saved.
[0031]
The seat belt sensor 9 is a sensor that detects whether the occupant wears a seat belt.
Further, the seating sensor 10 is a sensor that detects whether a passenger is sitting in a seat.
[0032]
The seat belt sensor 9 and the seating sensor 10 are connected to the control device 4.
The control device 4 can determine whether or not to perform the on-call sound control, based
on the detection results of the seat belt sensor 9 and the seating sensor 10 as described later.
[0033]
Further, the microphone 11 collects the sound in the passenger compartment and outputs the
collected sound to the control device 4.
[0034]
About the vehicle-mounted acoustic control apparatus 1 comprised as mentioned above, the
processing operation is demonstrated using FIGS. 4-5.
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FIG. 4 is a diagram for explaining the operation of the on-vehicle acoustic control apparatus
according to the embodiment of the present invention.
FIG. 5 is a diagram for explaining a table for performing acoustic control.
[0035]
Hereinafter, the case where the portable terminal device 2 exists in the area C of FIG. 2 will be
described.
[0036]
The control device 4 holds an "sound control flag" indicating whether sound control is being
performed during a call.
The "sound control flag" is 1 when sound control is in progress during a call, and "sound control
flag" is 0 when sound control during a call is not being performed.
At the time of "start" in FIG. 3, the sound control flag in the control device 4 is zero.
[0037]
First, in S01, in the communication device area A, area B, area C, and area D in which the
antennas 5a to 5d installed in the vicinity of the respective seats correspond to the respective
seats 6a to 6d which the control device 4 is in charge of It is determined whether the wireless
signal transmitted from the portable terminal device 2 is received or not within the range limited
to the above.
[0038]
Here, when the antenna 5 does not receive the wireless signal transmitted from the portable
terminal device 2 (NO in S01), the control device 4 returns the process to the start.
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[0039]
On the other hand, in S01, when at least one of the antennas 5a to 5d receives the radio signal
transmitted from the portable terminal device 2 (YES in S01), the control device 4 advances the
process to S02. .
[0040]
Next, in S02, the receiving device 3 determines whether the transmission timing of the wireless
signal transmitted from the mobile terminal device 2 obtained from the antenna 5 is continuous
for each of the wireless signals received by the antenna 5.
The determination result is transmitted to the control device 4.
[0041]
Here, when the transmission timings of the wireless signals transmitted from the portable
terminal device 2 obtained from the antennas 5a to 5d are not continuous at all (NO in S02), the
portable terminal in a call to any area in the vehicle compartment It is determined that the device
2 does not exist, and the control device 4 advances the process to S07.
[0042]
On the other hand, in S02, among the transmission timings of the radio signals obtained from the
antennas 5a to 5d, for example, when only the transmission timing of the radio signal received
by the antenna 5c is continuous (YES in S02), the antenna 5c is It is determined that the mobile
terminal device 2 is in a call only in the communication area area C in charge.
At this time, the control device 4 advances the process to S03.
[0043]
If YES in S02, the control device 4 specifies the seat 6c in which the caller is sitting as S03.
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Since it is determined in S02 that the portable terminal device 2 is in a call in the area C, it can be
specified that the seat 6c corresponding to the area C is a seat where the caller sits.
[0044]
Next to S03, it is determined whether the in-call sound control is being executed by the control
device 4, that is, whether the sound control flag in the control device 4 is 1 or 0 (S04).
[0045]
If the control device 4 is not executing the in-call sound control (NO in S04), that is, if the sound
control flag in the control device 4 is 0, the control device 4 advances the process to S05.
On the other hand, if the in-call sound control by the control device 4 is already being executed
by the past process (YES in S04), that is, if the sound control flag is 1, the control device 4
advances the process to S06.
[0046]
In the case of YES in S04, the control device 4 refers to information such as the volume of music
being played in the vehicle room before the sound control during a call is performed and the
setting of an equalizer (hereinafter referred to as "pre-call sound setting" ) Is stored in the storage
unit 8 (S05).
[0047]
Next to S05, the control device 4 performs in-call sound control according to the seat 6c in which
the caller is present.
Since it is specified in S03 that the seat of the caller is 6c, the control device 4 reads the first and
second sound control values stored in advance in the storage device 8, and based on these
values, the speakers 7a to 7d Control the sound and set the sound control flag to 1 (S06).
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[0048]
After the sound control during the call is automatically started (S06), the control device 4 returns
the process to S01 in a state in which the sound control during the call is being executed, and
subsequently the respective communication areas for which the antennas 5a to 5d are in charge
The wireless signal transmitted from the portable terminal device 2 in the area A to the area D is
received again (S01).
[0049]
Further, in the case of NO in S02, the control device 4 advances the process to S07.
In S07, the control device 4 determines whether or not sound control is in progress during a call,
that is, whether the sound control flag in the control device 4 is 1 or 0.
[0050]
If the in-call sound control is not being executed (the sound control flag is 0) (NO in S07), the
portable terminal device 2 is not in a call state in each seat, and the in-call sound control is not
executed. The control device 4 returns the process to S01, assuming that a call has not been
made before.
[0051]
On the other hand, if the in-call sound control is being performed (the sound control flag is 1)
(YES in S07), the call of the portable terminal device 2 is ended while the in-call sound control is
being performed by the control device 4. The control device 4 advances the process to S08.
[0052]
In S08, since the call of the portable terminal device 2 is ended, the control device 4 reads the
pre-call sound setting stored in the storage device 8 in S05, and restores the setting of the
volume and the equalizer.
By doing this, it is possible to restore the acoustic environment in the vehicle interior to the
setting before the start of the call.
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When the control device 4 ends S08, the process returns to S01.
[0053]
Here, the operation has been described by taking the case where the portable terminal device 2
is in the area C as an example, but the same operation is carried out when the portable terminal
device 2 is in a different area. In-call sound control is performed according to.
[0054]
As described above, by continuously and continuously receiving the wireless signal transmitted
from the portable terminal device 2, the portable terminal device which has newly made a call in
each area other than the portable terminal device 2 which is currently in a call If there is, it
detects and performs acoustic control.
[0055]
As a result, since it is possible to detect whether there is a mobile terminal device 2 for which the
transmission timing of the wireless signal transmitted from the mobile terminal device 2 has
changed from continuous to single, the mobile terminal device 2 ends the call. It can be
determined.
[0056]
Furthermore, even when the position of the portable terminal device 2 is moved from the seat 6c
to any one of the other seats 6a, 5b, and 5d due to a change of the caller during a call, etc. Since
the radio signal continues to be continuously received, it is possible to correctly detect which seat
is making a call, and the control device 4 performs in-call sound control following the movement
of the seat of the caller. be able to.
[0057]
Next, an example of the first and second sound control values stored in the storage device 8 is
shown in FIG.
The first and second acoustic control values are stored for each seat detected as being in a call.
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[0058]
The “talker seat” in FIG. 5 corresponds to the seat position detected as being in a call detected
by the control device 4.
Further, “speaker output” in FIG. 5 corresponds to the first and second sound control values.
[0059]
For example, when the “talker seat” is the seat 6c, the “speaker output” is “do not output”
the speaker 5c and the speakers other than the speaker 5c “do” the sound output.
The speaker 5c is a speaker corresponding to a seat position detected as being in a call, and this
corresponds to a first sound control value, and a control value of a speaker other than the
speaker 5c corresponds to a second sound control value.
[0060]
As described above, the in-vehicle acoustic control device according to the embodiment of the
present invention specifies a seat on which the user of the portable terminal device can sit when
it is determined that the portable terminal device in the vehicle compartment is in a call. Since
the sound in the vehicle compartment is controlled based on the specified seat position, even if
the user of the band terminal device moves, the sound is controlled at the position after the
movement.
As a result, even if the mobile terminal device moves, sound settings can be made according to
the movement.
[0061]
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In addition, in order to capture the position of the portable terminal device in detail, a
communication environment such as an antenna device with high accuracy is usually required,
and the cost for configuring the device increases.
However, the in-vehicle acoustic control device according to the embodiment of the present
invention can be configured with a simple configuration in order to specify not the detailed
position but the seat position. In general, the configuration of the present invention is sufficient
in practice because the passenger only sits in any of the determined seat positions.
[0062]
Although FIG. 5 shows that the output of the speaker closest to the seat where the caller is sitting
is turned off, and the other speakers continue to play music, it is not merely the output of the
speaker turned off, but the call Control value to reduce the volume output from the speaker
closest to the seat where the passenger is sitting, and to output the other speakers at a louder
volume than the speaker closest to the seat where the caller sits Further, the operation of
detecting the transmission timing of the wireless signal transmitted from the mobile terminal
device 2 can be continuously performed even after the sound control during the call. By doing
this, it is possible to detect the mobile terminal device 2 that has newly entered a call, or to detect
the call termination of the mobile terminal device 2. Furthermore, when the portable terminal
device 2 is handed over from the first speaker to another speaker, the sound can be controlled
following the movement of the portable terminal device 2 in the vehicle compartment.
[0063]
Further, the in-vehicle acoustic control device according to the embodiment of the present
invention is configured to detect whether the transmission timing of the wireless signal
transmitted from the mobile terminal device 2 is continuous or not. By doing this, if the
transmission timing is different between the time of call and the time of stand-by, the portable
terminal device 2 detects that it is a call without depending on the communication method of the
portable terminal device 2. It is advantageous to
[0064]
In the present embodiment, the antenna 5 is arranged in the vicinity of each seat, but if the seat
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can be divided into communication areas and the wireless signal transmitted from the portable
terminal device 2 can be received. The antenna 5 may be installed at a place other than the
vicinity of the seat.
[0065]
For example, a plurality of antennas 5 having directivity with respect to each area may be
provided on the floor or ceiling in the center of the cabin.
By doing this, the antennas 5 can be integrated and installed more easily than the installation of
the antennas 5 in the vicinity of the seat.
[0066]
In addition, one antenna 5 is installed on the floor or ceiling in the center of the cabin, and the
one antenna 5 is mechanically rotated so that directivity is directed in the direction of each seat,
and sequentially for the communication area for each seat The configuration may be such that a
wireless signal from the portable terminal device 2 is detected. By doing this, the number of
antennas 5 can be reduced, and the installation cost of the antennas 5 can be reduced.
[0067]
In the present embodiment, in order to identify the seat where the caller is sitting, the
configuration using antenna 5 has been described, but it is further determined whether the
occupant wears a seat belt provided in the vehicle. It is possible to use at least one piece of
information of the seat belt sensor 9 to be detected and the seating sensor 10 for detecting
whether the occupant is seated in the seat.
[0068]
Specifically, the control device 4 only detects the sound in the vehicle compartment when the
seat position specified by the reception device 3 is a seat detected by the seat belt sensor 9 or the
seating sensor 10. It can be controlled.
[0069]
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For example, when there is an incoming call with the portable terminal device 2 in a bag or the
like and placed in a seat where no one is sitting and not in the hand of the caller, no one is sitting
in that seat So no sound control is required during a call.
In such a case, the control device 4 can not perform the on-call sound control.
By doing this, it is possible to prevent acoustic control during a call on a seat where no one is
sitting.
[0070]
In addition, although the speaker 7 with which the vehicle is equipped is described as an audio
apparatus connected to the control apparatus 4 in this Embodiment, other audio apparatuses,
such as a tweeter and a woofer, may be connected. Thereby, compared to the case where only
the speaker 7 is connected to the control device 4, more realistic sound can be enjoyed in the
vehicle interior.
[0071]
In the present embodiment, although the first acoustic control value is created for one seat and
stored in the storage device 8, “the call by the portable terminal device 2 is being performed
simultaneously at the seats 6b and 6c. As in the case "," the sound control value for each seat
position when talking at a plurality of seat positions may be stored in the storage device 8.
[0072]
As a result, even when it is determined that a plurality of mobile terminal devices are in a call, or
even when another mobile terminal device 2c is newly in a call, it is possible to perform optimum
in-call sound control.
[0073]
The control device 4 can control the sound in the passenger compartment on the basis of the
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audio information collected by the sound collecting microphones 11 arranged in the vicinity of
each seat.
For example, the controller 4 calculates and generates an anti-phase sound that can cancel the
sound around the seat with the control device 4 and generates the anti-phase sound from the
speaker 7 to extinguish the sound around the seat where the talker is present You can also.
In this way, not only by the first and second acoustic control values stored in the storage unit 8
in advance, but also to the sound field in the vehicle compartment, it is possible to construct an
acoustic environment suitable for telephone calls in real time. can do.
[0074]
Note that the on-vehicle acoustic control device 1 according to the present embodiment is
mounted on a vehicle provided with a hands-free call function, and the reception device 3 detects
the portable terminal device 2 detected in the communication area corresponding to the driver's
seat. When it is detected that the electric field strength of the wireless signal exceeds a set
threshold, it may automatically shift to a hands-free call.
[0075]
In this way, the driver can avoid the dangerous situation of driving while holding the portable
terminal device 2 while driving, and neither the driver nor the passenger needs special operation.
Since the hands-free call is automatically switched, convenience for the passenger is improved.
[0076]
In the present embodiment, although it has been described that the control device 4 specifies the
seat of the caller, the receiving device 3 may perform this process.
As a result, the control device 4 can reduce the load of the arithmetic processing required to
specify a seat, and can allocate more arithmetic processing by executing the in-call sound control.
[0077]
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Note that, in the present embodiment, the receiving device 3 is used only for the receiving
purpose of receiving a wireless signal transmitted from the portable terminal device 2, but a
function of performing mutual communication with the portable terminal device 2 is added
Therefore, it may be used as a communication device, and may be configured to use Bluetooth
(registered trademark) as a method of wireless communication with the mobile terminal device 2.
This makes it possible to specify, for example, the model information of each mobile terminal
device 2 by pairing, etc. For example, in a specific mobile terminal device 2, even if there is an
incoming call, sound control during a call is performed. It is also possible to register in the
control device 4 settings such as not to execute.
[0078]
INDUSTRIAL APPLICABILITY The present invention is useful as an on-vehicle acoustic control
device or the like that controls the setting of sound in a vehicle compartment when a call is being
made using a portable terminal device in the vehicle compartment.
[0079]
DESCRIPTION OF SYMBOLS 1 in-vehicle acoustic control apparatus 2 portable terminal
apparatus 3 reception apparatus 4 control apparatus 5 antenna 6 seat 7 speaker 8 memory
apparatus 9 seat belt sensor 10 seating sensor 11 microphone
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