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DESCRIPTION JP2006188181

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DESCRIPTION JP2006188181
PROBLEM TO BE SOLVED: In an on-vehicle multimedia apparatus in which a monitor is mounted
on a front seat and a rear seat and speakers are installed on the front, rear, left and right of a car,
audio related to images displayed on each monitor Adjust the volume etc properly. SOLUTION:
An on-vehicle multimedia device 10 selects a sound source to be output to each of speakers, a
monitor control unit 20 which determines contents to be output to a front monitor 201 and a
rear monitor 202, and outputs sound to speakers. A speaker control unit 14 for adjusting the
output level, a control unit 11, and a control program for adjusting a sound source to be output
to each speaker according to the combination of contents when the content to be output to each
monitor is different The control unit determines the content to be output to the front monitor
and the rear monitor, selects the sound source to be output to each speaker based on the
determination result and the control program, and adjusts the output. [Selected figure] Figure 1
Automotive multimedia equipment
[0001]
The present invention relates to an on-vehicle audio apparatus, so-called multimedia apparatus
such as a car audio apparatus, and in particular, an on-vehicle multi-vehicle in which a monitor is
mounted on a front seat and a rear seat and speakers are installed on the front, rear, left and
right In the media device, when different images are displayed on the front seat seat and the rear
seat monitor, the volume etc. are appropriately adjusted in the front, rear, left and right speakers
for the audio related to the image displayed on each monitor The present invention relates to an
on-vehicle multimedia apparatus.
[0002]
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1
Audio equipment for in-vehicle use in recent years, so-called equipment such as car audio
equipment, has been multi-media, advanced, not just a car audio equipment, multimedia
equipment that combines the navigation function and DVD video function It is developing.
Such an on-vehicle multimedia apparatus has a monitor mounted on the front seat and the rear
seat, and a device having a speaker on the front, rear, left, and right of the vehicle is not unusual.
In the on-vehicle multimedia apparatus having such a configuration, not only the driver but also
the person seated in the rear seat can view the desired content. For example, with the front
monitor, the driver or the person sitting in the front passenger seat receives navigation service,
while the passenger sitting in the back seat enjoys the movie such as the movie recorded on the
DVD on the back monitor and enjoys be able to.
[0003]
By the way, as described above, in the case of an on-vehicle multimedia apparatus having a
configuration in which the monitors are mounted on the front seat and the rear seat and the
speakers are installed on the front, rear, left and right of the vehicle, the acoustic effects of the
speakers installed on the front, rear, left and right There are difficulties in operating the device
with certain settings and automatically obtaining appropriate sound effects in response to all
usage conditions of the in-vehicle multimedia device. In particular, when displaying different
images on the monitors of the front and rear seats while the driver is driving and displaying
audio related to the images displayed on the respective monitors from the front, rear, left and
right speakers. This is because it is necessary to appropriately adjust the volume and the like so
that the person who is watching the respective images can hear the related audio without
disturbing the driving operation.
[0004]
Generally, in a car audio system for vehicles, an audio output unit such as a speaker is fixedly
installed at a specific position in the vehicle. And since the operation part of the device is
installed in the front seat, if the number of passengers changes or the seating position changes,
the operation part of the front seat is appropriately operated to move forward and backward in
the car The output of the installed speaker is appropriately adjusted to generate an appropriate
sound field. Usually, such adjustments are made by positioning the driver on the front seat or the
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2
passenger on the front seat among the various control keys provided on the digital signal unit
(DSP) of the car audio system. It is performed by operating a balance knob (volume) or the like.
Therefore, when the number of passengers changes or the seating position changes, it is
necessary for the driver or the passenger in the front passenger seat to perform the abovementioned operation and adjustment each time.
[0005]
As a technique for solving such a problem, for example, a control device of an on-vehicle
apparatus disclosed in Patent Document 1 (Japanese Utility Model Application Laid-Open No. 560075) is disclosed. The control device of the in-vehicle device disclosed in the patent document
1 detects a seating position of a person who gets on the vehicle by a sensor such as an infrared
sensor installed at each seat position in the vehicle, and based on the detected seating position
information. For example, it is configured to perform appropriate control of a positioning
switching switch and left and right balance volume of a digital signal unit (DSP) of a car audio
apparatus, and improve safety and convenience at the time of driving operation. This control
function is performed under program control by a microcomputer incorporated in a digital signal
unit (DSP), and a seating output detected by each sensor is input to the microcomputer. Japanese
Utility Model Laid-Open Publication No. 5-60075 (FIG. 1, paragraphs [0009] to [0011])
[0006]
However, the control device of the in-vehicle device disclosed in Patent Document 1 relates to a
car audio device, and a technique for automatically controlling the volume of the front, rear, left,
and right speakers by detecting the sitting position of a person on board is disclosed. It is
disclosed. Therefore, as in the case of the on-vehicle multimedia apparatus according to the
present invention, in the case of an on-vehicle multimedia apparatus in which monitors are
mounted on the front and back and speakers are provided on the front, back, left and right,
different images are displayed on the front and rear monitors. There is a problem that it is not
possible to immediately divert the sound related to each image as a technique for appropriately
adjusting the volume etc. in the front, rear, left and right speakers.
[0007]
For example, in an on-vehicle multimedia apparatus according to the present invention, the
navigation image is displayed on the front monitor and the DVD video image is displayed on the
rear monitor. The audio output to the installed speaker is not only controlled so as to obtain an
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appropriate sound effect according to the seating position as in the audio device of the abovementioned Patent Document 1, but also using a monitor at the front. There is a problem that it is
necessary to control so that the audio guidance of the navigation can be listened to, and the
audio output of the DVD video can be listened to the person using the rear monitor.
[0008]
The inventors of the present application conducted various studies to solve the above-mentioned
problems, and as a result, based on the images displayed on the front monitor and the rear
monitor, audio related to the images displayed on the front and rear monitors The present
invention has been accomplished by finding that the above problems can be solved by
appropriately controlling the control of the speaker that outputs the signal based on the control
program created in advance.
[0009]
That is, the present invention has an object to solve the above-mentioned problems, and it is an
on-vehicle multimedia apparatus in which a monitor is mounted on a front seat and a rear seat
and speakers are installed near front and rear seats in the vehicle. And when displaying different
images on the monitors of the rear seat, the sound volume etc. is appropriate in the speaker
installed at a position suitable for listening to the front and rear seats with respect to the audio
related to the images displayed on the respective monitors It is an object of the present invention
to provide an on-vehicle multimedia apparatus adjusted to
[0010]
In order to solve the above problems, the invention according to claim 1 of the present
application comprises: a front monitor installed in a front seat and a rear seat, a rear monitor,
and a position and rear suitable for listening at least in the front seat A speaker installed at a
position suitable for listening in a seat, and an on-vehicle multimedia device, wherein the onvehicle multimedia device includes a monitor control unit that determines content to be output to
a front monitor and a rear monitor. A speaker control unit that selects a sound source to be
output to each of the speakers and adjusts an output level of audio to be output to each of the
speakers, the control unit, and the content when content to be output to the front monitor and
the rear monitor is different And a control program for adjusting the output level of the sound
source to be output to each of the speakers in accordance with the combination of The control
unit determines the content to be output to the front monitor and the rear monitor, and the
control unit controls the speaker control unit based on the determination result of the monitor
control unit and the control program, and the speakers To select the sound source to be output
to and adjust its output.
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[0011]
Also, in the invention according to claim 2 of the present application, when the contents output
to the front monitor and the rear monitor are different, the speaker control unit is a speaker
installed at a position suitable for listening in the front seat. In contrast, the rear monitor is used
to select the sound source related to the content output to the front monitor, adjust the output
level of the sound to a large degree, and install the speaker at a position suitable for listening in
the rear seat. To select the sound source associated with the content to be output, and adjust the
output level of the sound to a small value.
[0012]
Also, in the invention according to claim 3 of the present application, in the invention according
to claim 1 or claim 2, when traffic information is output to the front monitor, regardless of the
content output to the rear monitor The control unit controls the speaker control unit, selects only
a sound source related to the traffic information, and outputs sound only to a speaker near the
front seat.
[0013]
In the invention according to claim 1, when the content to be output to the front monitor and the
rear monitor is different, the in-vehicle multimedia device outputs the sound source and the
output level to the speakers according to the combination of the contents. And a control program
for adjusting, wherein the monitor control unit determines the content to be output to the front
monitor and the rear monitor, and the control unit determines the speaker based on the
determination result of the monitor control unit and the control program. The control unit is
controlled to adjust the sound source selection to be output to each of the speakers and the
output thereof.
Therefore, when the content output to the front monitor and the rear monitor is different, the
output level of the sound of the sound source output to the front and rear speakers can be
appropriately adjusted.
For this reason, it is possible for a person who gets on the rear seat to enjoy the DVD content and
the music content on the rear monitor without providing a hindrance to driving, and to provide
an on-vehicle multimedia device excellent in safety. become able to.
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[0014]
Further, in the invention according to claim 2, when the contents output to the front monitor and
the rear monitor are different, the speaker control unit outputs the contents to the front monitor
with respect to the speakers near the front seat. Select the sound source related to the and adjust
the output level of the sound largely, and select the sound source related to the content output to
the rear monitor for the speaker near the rear seat and adjust the output level of the sound small
Do.
Therefore, a person who gets on the rear seat without being hindered from driving can enjoy
DVD content and music content on the rear monitor.
[0015]
In the invention according to claim 3, when traffic information is output to the front monitor, the
control unit controls the speaker control unit regardless of the content output to the rear
monitor, Only the sound source related to the traffic information is selected, and audio is output
only to the speakers near the front seat.
Therefore, when the driver outputs traffic information to the front monitor, only the voice
associated with it is output to the speaker, and the driver can surely recognize necessary traffic
information.
[0016]
Hereinafter, specific examples of the present invention will be described in detail using examples
and drawings.
FIG. 1 is a block diagram showing the configuration of an on-vehicle multimedia apparatus
according to an embodiment of the present invention.
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FIG. 2 is a conceptual view of a control table showing an aspect of audio output control in the invehicle multimedia apparatus of FIG. FIG. 3 is a flow chart showing the operation procedure of
the in-vehicle multimedia apparatus of FIG.
[0017]
As shown in FIG. 1, the on-vehicle multimedia apparatus 10 according to the embodiment of the
present invention includes a control unit 11 including a microcomputer, a RAM 12 and a ROM
13. The control unit 11 is a control program stored in the ROM 13. Control each part according
to. The control unit 11 reads and writes necessary information with the RAM 12 as a temporary
storage for controlling each part.
[0018]
The on-vehicle multimedia apparatus 10 further includes a front monitor 201, a rear monitor
202, a front left speaker 101, a center speaker 102, a front right speaker 103, a rear left speaker
111, a woofer 112, and a rear right speaker 113. Each unit is installed at a predetermined place
in the car. For example, the front monitor 201 is installed in front of the front seat, the rear
monitor 202 is installed in front of the rear seat, the left front speaker 101, the center speaker
102 and the right front speaker 103 are front, left, center of the front seat, respectively. The left
rear speaker 111, the woofer 112, and the right rear speaker 113 are installed on the right side,
and are installed on the rear side, the left side, the center, and the right side of the rear seat,
respectively.
[0019]
The in-vehicle multimedia device 10 further includes a disk reproduction unit 15, a tuner unit 16,
a monitor control unit 20, an operation unit 17, a power supply unit 18, and a speaker control
unit 14. The operation unit 17 is for operating various functions of the in-vehicle multimedia
device 10, and includes keys, a knob, and the like. The power supply unit 18 is a unit for
supplying power to the in-vehicle multimedia device 10. The disk reproducing unit 15 is a unit
for reproducing a disk recording medium such as a DVD video, and the tuner unit 16 is for
receiving various broadcasts.
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[0020]
The in-vehicle multimedia device 10 can activate one of its functions and output the same image
to the front monitor 201 and the rear monitor 202, and can also operate two functions
simultaneously. Different images can also be output to the rear monitor 202, respectively. The
monitor control unit 20 controls the output of contents such as images to be output (displayed)
to the front monitor 201 and the rear monitor 202, and the speaker control unit 14 controls the
control unit 11 to be described later. The volume of the front left speaker 101, the center
speaker 102, the front right speaker 103, the rear left speaker 111, the woofer 112, and the rear
right speaker 113 are appropriately controlled according to the operating state of the in-vehicle
multimedia device 10.
[0021]
For example, the driver who gets in the front seat or the person who gets in the front passenger
seat operates the navigation function of the in-vehicle multimedia device 10 to display the
navigation image on the front monitor 201, and the person who gets in the rear seat It is
assumed that the DVD function is activated to display the playback video of the DVD video on the
rear monitor 202. In this case, audio guidance of the navigation and reproduction audio of the
DVD video flow to each of the speakers 101 to 103 and 111 to 113 as audio related to the video
outputted to the respective monitors 201 and 202, but are preset in the control unit 11. The left
front speaker 101, the center speaker 102, and the right front speaker 103 are adjusted to
increase the audio guidance output of the navigation by the control program, and the left rear
speaker 111, the woofer 112, and the right rear speaker 113 are DVD video It is adjusted so that
the output of the reproduction sound becomes large. The speaker control unit 14 performs this
adjustment based on the control program of the control unit 11 described above.
[0022]
The control program (stored in the ROM 13) of the control unit 11 includes the operation status
of each function of the in-vehicle multimedia device 10, ie, the image (content) output to the
front monitor 201 and the rear monitor 202. According to the combination, the setting of the
sound source to be reproduced, that is, the setting of the control amount such as the sound
source of the sound related to the video output to each monitor and the volume for each of the
speakers 101 to 103 and 111 to 113 is programmed. The speaker control unit 14 adjusts the
output of each speaker based on this control program.
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[0023]
FIG. 2 shows the sound source to be reproduced according to the combination of the video
(content) output to the front monitor 201 and the rear monitor 202, that is, the sound source of
the audio related to the video output to each monitor It is the figure which showed notionally the
function of the control program which sets control amount, such as a sound volume with respect
to the speakers 101-103, 111-113, as a control table.
In FIG. 2, the “front monitor” column indicates the type of video (content) output to the front
monitor 201, and the “rear monitor” column indicates the type of video (content) to be output
to the rear monitor 202. NAVI is navigation, TV / FM / MD / CD / MP3 is music content, DVD is
DVD video, and traffic information (FM) is traffic information broadcast.
[0024]
The "sound source to be reproduced" column is a sound source related to the image output to the
front monitor 201 and the rear monitor 202, and the "localization setting" column is output to
the front monitor 201 and the rear monitor 202. This is a sound source to be output to each
speaker according to the image being displayed, and is a setting of the control amount such as
the sound volume for 101 to 103 and 111 to 113. For example, when the navigation image is
output to the front monitor 201 and the playback video of the DVD video is output to the rear
monitor 202, the navigation sound source and the DVD video sound source are selected as sound
sources, and The sound source for navigation is selected as the sound source for the speakers
(left front speaker 101, center speaker 102, and right front speaker 103) installed in the unit,
and the output level of the voice guidance of navigation is increased. , The woofer 112 and the
right rear speaker 113), the sound source of the DVD video is selected, and the output level of
the reproduction sound of the DVD video is largely adjusted. This state is shown in line 24 and
line 25 of FIG. 2, and the notation of “front” and “back” of the localization setting indicates
the sound source selection and output level adjustment of the front and rear speakers,
respectively. There is.
[0025]
For example, as shown in line 28, when the front monitor 201 and the rear monitor 202 are both
outputting music content, the respective medium (MD / CD / MP3) is selected as the sound
source, and the middle setting of the localization setting is made. The notation indicates that
audio is uniformly output to all the speakers (front left speaker 101, center speaker 102, front
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right speaker 103, rear left speaker 111, woofer 112, rear right speaker 113).
[0026]
As shown in lines 32-33, when traffic information is being output by the front monitor 201, the
sound related to the video being output to the rear monitor 202 is given to the rear speaker with
the traffic information as the top priority. It is controlled not to output.
That is, the sound source selected as the sound source to be reproduced is only traffic
information, traffic information is output only to the front speakers, and no sound is output to
the rear speakers. In this case, it is also possible to adjust the volume of the rear speakers so as
to reduce the volume to the lowest level as the volume adjustment. When the video of the
navigation is output to the rear monitor 202, the row 32 outputs the contents of the DVD video
to the rear monitor 202 when the music content is output to the rear monitor 202 The cases are
shown respectively.
[0027]
Further, as in the case where traffic information and navigation content are output to the front
monitor 201 and related audio is output to the front speakers (the front left speaker 101, the
center speaker 102, the front right speaker 103), It is preferable to adjust the equalizer to be flat,
with the digital signal unit (DSP) off, which is believed to have a negative effect on the function
and is not shown in FIG. The notations “DSPOFF” and “EQ FLAT” in the “Remarks”
column of FIG. 2 indicate this.
[0028]
The operation of the on-vehicle multimedia apparatus 10 according to the embodiment of the
present invention will be described with reference to the flowchart of FIG. In the process of step
S10, the monitor control unit 20 determines the video (content) output to the front monitor 201.
In the process of step S11, it is determined whether the determination result in step S10 is traffic
information. In the case of traffic information, in the process of step S12, the speaker control unit
14 selects only the sound source of the traffic information being output to the front monitor 201,
and the speakers installed in the front (left front speaker 101, center speaker This voice is output
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only to the right front speaker 103).
[0029]
If the content output to the front monitor 201 is not traffic information in the process of step
S11, the monitor control unit 20 proceeds to the process of step S13 and determines the video
(content) output to the rear monitor 202. In the process of step S14, the speaker control unit 14
selects a sound source for each of the speakers 101 to 103 and 111 to 113, and adjusts the
volume in the process of step S15. This control is executed by the control unit 11 controlling
each part based on a control program created in advance based on the concept shown in the
control table of FIG. 2 described above. Then, in the process of step S16, if the control is not
completed, the process returns to the process of step S10, and the process of each step described
above is repeated. When the control ends, the above-described series of processing ends.
[0030]
As described above, according to the in-vehicle multimedia apparatus of the present invention, a
plurality of in-vehicle multimedia devices are provided corresponding to contents such as images
output to monitors installed in front and back of the vehicle. It is possible to appropriately
control the sound source outputted to the speaker and the volume thereof, and to provide an onvehicle multimedia apparatus excellent in safety.
[0031]
FIG. 1 is a block diagram showing the configuration of an in-vehicle multimedia apparatus
according to an embodiment of the present invention.
It is a conceptual diagram of the control table which shows the aspect of the audio | voice output
control in the vehicle-mounted multimedia apparatus of FIG. It is a flowchart which shows the
operation | movement procedure of the vehicle-mounted multimedia apparatus of FIG.
Explanation of sign
[0032]
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DESCRIPTION OF SYMBOLS 10 Car multimedia apparatus 11 Control unit 12 RAM 13 ROM 14
Speaker control part 15 Disc reproducing part 16 Tuner part 17 Operation part 18 Power supply
unit 19 Internal bus 20 Monitor control part 101 Left front speaker 102 Center speaker 103
Right front speaker 111 Left rear speaker 112 woofer 113 rear right speaker 201 front monitor
202 rear monitor
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