JP2008100598A - Acoustic system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic system for a vehicle capable of recognizing external sound or the like by a driver by the fact that an occupant carrying a portable acoustic equipment does not get in the vehicle while listening to music in the state that a headphone is attached in the acoustic system for the vehicle. <P>SOLUTION: At step S8, attention calling control is performed by an on-vehicle acoustic equipment 100. The attention calling control is the control for calling the attention such that it promotes, in particular, removal of the headphone 202 of the portable acoustic equipment 200 relative to the driver and listening by the headphone 202 is forbidden. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle acoustic system, and in particular, a vehicle that can connect a portable acoustic device carried by an occupant and an in-vehicle acoustic device installed in the vehicle by wireless communication, and transmit and receive music data between the two. It relates to an acoustic system.

2. Description of the Related Art Conventionally, in a vehicle acoustic system, music data recorded on a music storage medium such as a CD (compact disc) or an MD (mini disc) is mounted on an in-vehicle acoustic device installed in the passenger compartment. Or playing music data recorded on an HDD (Hard Disk Drive) installed in an in-vehicle audio device, enjoying music in the passenger compartment.
In recent years, music data is recorded on a portable audio device, and the recorded music data can be enjoyed on the go as music.

  Therefore, for example, in Patent Document 1 below, the portable audio device is connected to the in-vehicle audio device by wireless communication so that the music data held by the portable audio device can be reproduced by the in-vehicle audio device, and then the music data of the portable audio device is recorded. Has been proposed for a vehicle acoustic system in which the music data is reproduced as music from a vehicle-mounted speaker of the vehicle-mounted acoustic device.

According to this vehicle acoustic system, music data recorded by each occupant on his / her portable acoustic device in a car can be enjoyed easily and reliably.
JP 2001-296875 A

  By the way, since the portable audio equipment reproduces and outputs the music data it holds as music with headphones etc., the passenger carrying the portable audio equipment is always wearing headphones etc. from outside the vehicle to the passenger compartment. Can enjoy.

  Therefore, even when the occupant gets into the vehicle as a driver, the occupant can drive the vehicle while listening to music while wearing headphones or the like.

  However, if the driver drives the vehicle while listening to music while wearing the headphones, information obtained by hearing is blocked by the headphones or the like, and thus the driver may not be able to perform an appropriate driving operation.

  For example, even though an emergency vehicle is approaching, you cannot hear the siren's sound, so the vehicle speed cannot be reduced, or even though motorcycles etc. are running side by side in close proximity. There may be a problem that the existence cannot be recognized.

  Therefore, the present invention provides a vehicle acoustic system in which an occupant carrying a portable audio device can recognize an external sound or the like while listening to music and not getting into the vehicle while listening to music. An object of the present invention is to provide an acoustic system for a vehicle.

  The vehicle acoustic system according to the present invention includes a portable audio device carried by an occupant and an in-vehicle audio device installed in the vehicle, and the music data held by the portable audio device is reproduced by the in-vehicle audio device via communication means. A vehicle acoustic system configured to perform communication establishment detection means for detecting establishment of communication by means of communication means between the portable acoustic device and the in-vehicle acoustic device, and establishment of communication detected by the communication establishment detection means And a removal awakening means that prompts removal of the reproduction output means of the portable audio device.

According to the above configuration, when communication between the portable audio device and the in-vehicle audio device is established by the communication establishment detection means, the removal awakening means alerts the removal of the reproduction output means.
For this reason, when an occupant carrying a portable audio device gets into the vehicle, the removal of the reproduction output unit is alerted to the establishment of communication between the portable audio device and the in-vehicle audio device. Recognize that removal is necessary.
Note that the reproduction output means may be any device such as headphones or earphones as long as it can be worn by the occupant on the ear and enjoy the music data as music.
Further, the communication means may be a wired communication means or a wireless communication means.

In one embodiment of the present invention, the removal alerting means includes: audio output from the reproduction output means; display output from the display of the portable acoustic device; audio output from an in-vehicle speaker; display output from an in-vehicle display , At least one is configured to alert removal.
According to the said structure, the information of alerting removal is output with an audio | voice or a display from the reproduction | regeneration output means, a display, etc. of a portable audio equipment or a vehicle-mounted audio equipment.
Therefore, it is possible to transmit the information to the occupant using an existing portable audio device or in-vehicle audio device without separately providing an output means for transmitting the information on the warning of removal.

In one embodiment of the present invention, the removal inducing means is constituted by stop means for stopping the reproduction output of the reproduction output means of the portable audio device.
According to the above configuration, when communication between the portable audio device and the in-vehicle audio device is established, the reproduction output of the reproduction output unit is stopped by the stop unit.
For this reason, the occupant voluntarily removes the reproduction output means from which the music is not reproduced and output, and can alert the removal of the reproduction output means.
Therefore, it is possible to alert the occupant to remove the reproduction output means simply by stopping the reproduction output of the reproduction output means.

In one embodiment of the present invention, the removal inducing means is constituted by reproduction output changing means for changing the reproduction output state of the reproduction output means of the portable audio device.
According to the above configuration, when communication between the portable audio device and the in-vehicle audio device is established, the reproduction output state of the reproduction output unit is changed by the reproduction output changing unit.
For this reason, it becomes painful for the occupant to wear the reproduction output means by listening to unpleasant music whose reproduction output state has changed, and thus it is possible to alert the user to remove the reproduction output means.
Therefore, by changing the reproduction output state of the reproduction output means, it is possible to actively alert the passenger to the removal of the reproduction output means.
As a method of changing the reproduction output state of the reproduction output means, changing the reproduction speed, changing the reproduction sound range to a high sound range or a low sound range, mixing an abnormal sound every predetermined interval, every predetermined interval It can be considered to create a silent range.

In one embodiment of the present invention, when the removal alerting means alerts removal, the portable audio device is in a reproduction output state, and when the in-vehicle audio device is activated, the reproduction output is performed by the portable audio device. The music being played is reproduced and output by a vehicle-mounted speaker.
According to the above configuration, when the mobile audio device is in a playback output state and the in-vehicle audio device is activated, the music that has been played back by the playback output means of the mobile audio device is played back and output by the in-vehicle speaker. Become.
For this reason, even when the occupant is alerted by the removal alerting means and the reproduction output means is removed, the occupant can listen to the music that was being listened to as it is with the in-vehicle speaker.
Therefore, the removal of the reproduction output means can be promoted without obstructing the state in which the passenger enjoys music as much as possible.

According to the present invention, when the occupant carrying the portable audio device gets into the vehicle, the occupant is alerted to the removal because of the establishment of communication between the portable audio device and the in-vehicle audio device. Recognize that it is necessary.
Therefore, in a vehicle acoustic system, an occupant carrying a portable audio device should be able to listen to music while listening to music and not to get into the vehicle so that the driver can recognize external sounds, etc. Can do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic plan view of an automobile employing the present invention. The vehicle acoustic system according to the first embodiment includes an in-vehicle acoustic device 100 installed in the vehicle 1 and portable acoustic devices 200a and 200b that are carried by passengers in the vehicle.

  The on-vehicle acoustic device 100 includes functions such as a navigation function and an Internet communication function (not shown) in addition to the audio function, and is configured to perform various information processing.

  The in-vehicle acoustic device 100 includes a CD drive 11 that reads CD music data, an MD drive 12 that reads MD music data, an HDD 13 that records music data, an in-vehicle speaker 14 that reproduces and outputs music in a vehicle interior, and a plurality of in-vehicle speakers. A device such as an in-car wireless antenna 15 that performs wireless communication with the portable audio devices 200a and 200b is provided, and these devices are connected to the centralized control unit 10, respectively.

  The audio function of the in-vehicle acoustic device 100 has a function of reproducing and outputting music data converted to digital data held in the CD, MD, and HDD 13 as music from the in-vehicle speaker 14 as in the case of the conventional audio device. It also has a function of receiving AM / FM radio waves with an AM / FM tuner (not shown) and outputting AM / FM broadcasting from the in-vehicle speaker 14.

  Further, the in-vehicle audio device 100 can communicate with a plurality of portable audio devices 200a and 200b brought into the vehicle interior by wireless communication, and receives music data held by the portable audio devices 200a and 200b. A function of reproducing and outputting from the indoor in-vehicle speaker 14 is also provided.

The central control unit 10 to which these devices are connected is connected to the in-vehicle LAN unit 40 and configured to perform information communication with other vehicle control devices.
Here, as another vehicle control device, for example, there is a door lock switch 41 provided on the front door, and a lock / release signal of the door lock mechanism is transmitted from the door lock switch 41 to the central control unit 10. It is configured.

  Further, as another vehicle control device, there is also an IG switch 42, and an ACC (including ON) signal or the like for detecting that the vehicle is powered is transmitted from the IG switch 42 to the central control unit 10. It is configured.

  Next, the acoustic system and the wireless communication system of the present embodiment will be described with reference to the system block diagram shown in FIG.

  The left side is a system block of the in-vehicle audio device 100, and the right side is a system block of the portable audio device 200a. In the drawing, only the system block of one portable audio device is shown in detail for convenience, but the systems of other portable audio devices are similarly configured.

  The in-vehicle acoustic device 100 is provided with a CPU 101, and the CPU 101 performs system control of the in-vehicle acoustic device 100. A music source 102 is connected to the CPU 101, and the music source 102 includes a storage medium (CD, MD) storing music data, an information storage means (HDD) storing music data received from the outside, and the like. And has various music data.

  Further, an amplifier 103 is connected to the CPU 101, and this amplifier 103 is configured to amplify and convert a music information signal such as music data and reproduce and output it as music from the in-vehicle speaker 14.

  Further, a display 104 is connected to the CPU 101, and this display 104 is configured to display the control contents of the in-vehicle acoustic device, the song name data of the music source, and the like. In addition, a voice guidance memory 105 is connected to the CPU 101, and this voice guidance memory 105 holds data that allows the passenger to recognize the operation method of the on-vehicle acoustic device by voice.

  In addition, the CPU 101 is connected to an audio operation switch 107 such as a power switch, a volume, and a playback button, and an output switching button 108 via an operation system interface 106.

  The CPU 101 is connected to a transmission / reception module 109, and the transmission / reception module 109 performs in-vehicle wireless communication with the portable audio devices 200 a and 200 b brought into the vehicle via the in-vehicle wireless antenna 15.

  Further, the door lock switch 41 described above is connected to the CPU 101, and this door lock switch 41 is configured to transmit an ON signal (locking signal) and an OFF signal (release signal) of the door lock mechanism.

The portable audio device 200a includes a device main body 201a and a headphone 202a connected by wire.
The device main body 201a is provided with a CPU 203 that controls the system of the portable audio device 200a. The CPU 203 also includes a music source 204, a transmission / reception module 205, a display 206, and an operation system interface 207. The audio operation switch 208 and the internal / external switch 209 are connected. A voice guidance memory 210 for storing voice guidance is also connected.

  The headphone 202a of the portable audio device 200a is configured to reproduce and output music data transmitted from the device main body 201a of the portable audio device as music so that the music data of the portable audio device can be personally enjoyed.

Note that the number of portable audio devices is set to only two in the present embodiment, but can be additionally set according to the number of passengers and the like as indicated by virtual lines.
Moreover, you may comprise between the apparatus main body 201a and the headphones 202a so that music data may be transmitted / received by radio | wireless communication similarly to a vehicle-mounted audio equipment.

The in-vehicle audio device 100 and the portable audio devices 200a and 200b transmit and receive music data and the like via wireless communication between the devices. This wireless communication method employs a short-range data communication method in which each device recognizes and authenticates each other in the vehicle interior and performs data communication between the devices.
Short-range data communication methods include communication methods such as radio wave communication, optical communication, and infrared communication that apply spread spectrum technology. In this embodiment, radio communication with less directivity is employed. However, other communication methods may be adopted as long as a network in which the in-vehicle music device is the master and the portable music device is the slave can be constructed in the communication connection state.

  In addition, since music data to be transmitted / received is compatible with all models and is desired to be transmitted / received in a short time, it is desirable that the music data is converted into data compressed with file data and transmitted / received.

  In this way, by connecting the in-vehicle audio device 100 and the portable audio devices 200a and 200b by wireless communication and constructing a network, each device can transmit and receive music data. And it becomes possible to control each portable audio equipment 200a, 200b by the vehicle-mounted audio equipment 100.

Next, the operation and operation method of the present embodiment will be described with reference to FIGS.
First, the operation of the in-vehicle acoustic device 100 will be described with reference to a control flowchart shown in FIG.

First, various detection signals are read in step S1. This reading operation is always performed, and is performed by standby power even when the on-vehicle acoustic device 100 is powered off.
Next, in step S2, it is determined whether the door lock switch 41 (see FIG. 1) has been turned from ON to OFF. That is, it is determined whether a door lock mechanism (not shown) has changed from a locked state to a released state, and detects that an occupant gets into the vehicle.

  If YES is determined in step S2, that is, if it is determined that an occupant is in the vehicle, the process proceeds to step S3 to activate the above-described transmission / reception module 109 (see FIG. 2). Here, by activating the transmission / reception module 109, it is searched whether the occupant who is in the vehicle carries the portable audio device 200.

  On the other hand, in the case of NO determination in step S2, the process directly returns to prepare for the next control.

  Next, it transfers to step S4 from step S3 and it is determined whether the portable audio equipment 200 exists. That is, it is determined whether an occupant who has entered the vehicle carries the portable audio device 200 and immediately determines whether wireless communication has been established with the in-vehicle audio device 100.

If YES is determined in step S4, that is, if the occupant who has entered the vehicle interior carries the portable audio device 200 and wireless communication is established with the in-vehicle audio device 100, the process proceeds to step S5. Read music title data from the portable audio device 200. Here, the data to be read is so-called index data for specifying music such as music title data, artist data, album data, etc., and is data having a smaller data capacity than music data for actually reproducing music.
For this reason, the data reading operation in step S5 is performed in a short time, and as a result, the power consumption for reading can be reduced.

  In the case of NO determination in step S4, it is determined that the occupant who has boarded the vehicle does not carry the portable audio device 200 or that the occupant has not boarded, so the routine proceeds to return and prepares for the next control.

In step S5, after reading music title data or the like from the portable audio device 200, the process proceeds to step S6 to determine whether the IG switch 42 is ACC (including ON). That is, it is determined whether the vehicle is powered on.
Here, if the determination is YES, it is determined that the vehicle has been powered on, and the process proceeds to step S7. If the determination is NO, the process proceeds to return to prepare for the next control.

In step S7, it is further determined whether the in-vehicle acoustic device 100 is powered on. If the determination is YES, the process proceeds to step S8. If the determination is NO, the process proceeds to return to prepare for the next control.
In step S <b> 8, alert control is performed by the in-vehicle acoustic device 100. This alerting control is a control for alerting an occupant, particularly a driver, to detach the headphones 202 of the portable audio device 200 so as to prohibit listening on the headphones 202.

  Specifically, voice guidance stored in the voice guidance memory 105, for example, voice guidance “Please remove headphones while driving” is output from the in-vehicle speaker 14 to the vehicle interior, so that the headphones 202 Encourage removal.

  At the same time, the “attention” screen as shown in FIG. 7A is also displayed on the display 104 of the in-vehicle acoustic device 100. On the “attention” screen, a character (D11) “Please remove headphones while driving” is displayed in the center to prompt the driver to remove the headphones 202.

  By performing the alerting control in this way, even if the driver gets into the vehicle compartment with the headphones 202 attached, the driver can be aware of the removal of the headphones 202, and the driver can play music with the headphones 202 attached. It is possible to prevent the vehicle from being driven while listening to the sound.

  In particular, by alerting by voice, the driver can be alerted by hearing even when the driver cannot see the display 104 due to vehicle operation or the like.

  On the other hand, by alerting the user through the screen display, the driver can be alerted visually even when the driver wears the headphones 202 and listens to music at a high volume.

  To end the alerting control, a touch panel type “confirmation button” (D12) provided at the lower right of the alerting screen is pressed.

  After performing the alerting control in step S8, the process proceeds to step S9. In step S9, in-vehicle acoustic control is performed. Specifically, according to the control flow shown in FIG. 4, music data and the like held by the in-vehicle audio device 100 and the portable audio device 200 are reproduced and output from the in-vehicle speaker 14 (see FIG. 1) of the in-vehicle audio device 100.

Next, with reference to FIG. 4, a control flow of in-vehicle acoustic control of the in-vehicle acoustic device 100 will be described.
First, in step S21, it is determined whether the portable audio device 200 is being reproduced. Here, if the determination is NO, that is, if music is not being played on the portable audio device 200, the process proceeds to step S24. On the other hand, if YES is determined, the process proceeds to step S22.

  In step S22, the music data being reproduced is read from the portable audio device 200. Reading music data from the portable audio device 200 is automatically performed, and is different from reading music data arbitrarily performed by the driver on an “audio menu” screen described later.

  After the music data is read in step 22, the process proceeds to step 23. In step 23, the read music data is automatically reproduced and output by the vehicle-mounted speaker 14.

  Thus, by automatically reproducing and outputting the music data automatically read by the in-vehicle speaker 14, the music that the occupant has been listening to using the portable audio device 200 is reproduced and output as it is in the passenger compartment. .

  For this reason, even if the occupant removes the headphones 202, the occupant can continue to enjoy the music that he / she enjoyed until now even in the passenger compartment.

  Here, since it is a piece of music data that can be reproduced and output by the vehicle-mounted speaker 14, if there are a plurality of portable audio devices 200 with several passengers in the vehicle, the portable sound of the passenger sitting in the driver's seat is present. It can be considered that the music data of the device 200 is preferentially reproduced and output, or the music data of a specific portable audio device 200 registered in advance is preferentially reproduced and output.

  Next, in step S24, it is determined whether or not a music source is determined in the audio menu. Specifically, it is determined whether or not the occupant has selected and decided one music source using the cursor on the “audio menu” screen displayed on the display 104 shown in FIG.

  Here, if the determination is NO, that is, if the occupant does not determine the music source, the process proceeds to return to prepare for the next control.

  On the other hand, if the occupant selects and determines one music source by the YES determination, that is, the “audio menu” screen, the process proceeds to step S25.

  For example, as shown in FIG. 6, when the occupant selects the external player A (the portable acoustic device 200 carried by the driver) as the music source, as shown in FIG. Among them, the external player A is determined by moving the cursor (D2) to the side of the external player A (D1) and determining with the determination button (not shown).

Next, in step S25, it is determined whether the music source is the portable audio device 200, that is, whether the music source is an external player.
If YES is determined in step S25, that is, if it is determined that the music source is the portable audio device 200, the process proceeds to step S26 and music data of the portable audio device 200 is selected. On the other hand, if NO is determined in step S25, that is, if it is determined that the music source is the in-vehicle audio device 100, the process proceeds to step S28 and the music data of the in-vehicle audio device 100 is selected.

  The music data selection is performed, for example, on the “audio menu” screen of FIG. When a specific music source is selected on the left side, a data list (D3) of music data held by each of the audio devices 100 and 200 is displayed on the right side. Select and decide. In this way, a specific song is selected.

  This selection decision may be set so that the music is selected at once for each specific artist or album, or may be set so that the music is selected at random.

  In step S26, the music data selected from the portable audio device 200 is further read into the in-vehicle audio device 100.

  At this timing, only music data necessary for reproduction is read into the in-vehicle acoustic device 100, so that the data reading time can be shortened and the storage capacity of the storage medium of the in-vehicle acoustic device 100 can be reduced.

  Then, the process proceeds to step S27, and the music data of the portable audio device 200 read by the in-vehicle audio device 100 is reproduced and output from the in-vehicle speaker 14.

  On the other hand, when the music data of the in-vehicle acoustic device 100 is selected in step S28, the process proceeds to step S29, where the music data of the in-vehicle acoustic device 100 is reproduced and output from the in-vehicle speaker 14 as it is.

  As described above, by selecting and determining the music source on the “audio menu” screen, the music data requested by the occupant is arbitrarily reproduced and output by the in-vehicle speaker 14 so that the occupant can enjoy music more comfortably. it can.

  In addition, about the reproduction output from these vehicle-mounted speakers 14, it is also possible to change an output state with the above-mentioned audio operation switch 107 and the output switch button 108. FIG.

Next, the operation of the portable audio device 200 connected for communication will be described with reference to the control flowchart shown in FIG.
First, in step S31, it is determined whether the power source of the portable audio device 200 is ON. That is, if the power is not ON, wireless communication with the in-vehicle acoustic mechanism cannot be performed, and thus the power state of the portable audio device 200 is determined.

  If NO is determined in step S31, that is, if the power is OFF, the process proceeds to step S32. In step S32, the portable audio equipment 200 is turned on in response to the induced electromotive force from the vehicle.

  Although this induced electromotive force is not specifically shown, as in the case of using with a non-contact IC card or the like, the portable acoustic device 200 is brought close by providing a starting circuit using a coil near the door of the vehicle. It is configured to occur when it occurs.

  After the portable audio device 200 is turned on in step S32 or in the case of YES determination in step S31, the process proceeds to step S33, and the transmission / reception module 205 of the portable audio device 200 is activated. The activation of the transmission / reception module 205 corresponds to the activation (step S3) of the transmission / reception module 109 of the in-vehicle audio device 100 described above, and the in-vehicle audio device 100 and the portable audio device 200 are activated by the activation of the transmission / reception module 205. Wireless communication will be established.

  Next, the process proceeds to step S <b> 34, and the index data such as the song title data owned by itself is transmitted to the in-vehicle acoustic device 100 in response to a request from the in-vehicle acoustic device 100. The transmitted index data is displayed in the data list (D3) of the “audio menu” screen of FIG.

  Then, it transfers to step S35 and it is determined whether the portable audio equipment 200 is reproducing | regenerating. Here, if the determination is YES, that is, if music is being played, the process proceeds to step S36, and if the determination is NO, the process proceeds to step S38.

  In step S <b> 36, alert control is performed with the portable audio device 200. As with the above-described alert control of the in-vehicle acoustic device, the alert control of the portable audio device 200 is urged to urge the passenger, particularly the driver, to remove the headphones 202 and to prohibit listening to the headphones 202. It is a control to arouse.

  Specifically, as in the vehicle-mounted acoustic device, the voice guidance stored in the voice guidance memory 210 of the portable acoustic device 200 is output from the headphones 202 or displayed on the display 206 as shown in FIG. Alerts the passenger by displaying the “Awareness” screen.

  By performing the alerting control in this manner, the occupant can be made aware of the removal of the headphones 202 even on the portable audio device 200 side, and the driver can drive the vehicle while listening to music while wearing the headphones 202. Can be prohibited.

  Next, the process proceeds to step S <b> 37, and the music data reproduced and output by the portable audio device 200 is transmitted to the in-vehicle audio device 100. The transmission of the music data corresponds to step S22 of the above-described on-vehicle acoustic control, and allows the occupant to continuously listen to the music data that is being listened to with the headphones 202 of the portable audio device 200 through the on-vehicle speaker 14. This control is performed for this purpose.

  Then, the process proceeds to step S38, and it is determined whether the music data held by the user is selected by the in-vehicle acoustic device 100. In the case of NO determination here, since the music data of its own has not been selected, the process proceeds to return to prepare for the next control. On the other hand, if YES is determined, the process proceeds to step S39.

  In step S39, only the music data selected by the in-vehicle audio device 100 is transmitted to the in-vehicle audio device 100. The transmission of the music data is transmission control corresponding to the above-described step S26, and only the selected music data is transmitted to the in-vehicle acoustic device 100, so that it can be transmitted in a short time.

  With such a control flow, the portable audio device 200 brought into the vehicle interior is operated.

  As described above, the vehicle acoustic system according to the present embodiment is configured such that wireless communication is automatically established when an occupant enters the vehicle, and the vehicle-mounted acoustic device 100 and the mobile phone are provided to the occupant during the establishment. Attention control is performed to alert the removal of the headphones 202 by the acoustic device 200 or the like.

Next, the function and effect of the present embodiment configured as described above will be described in detail.
The vehicle acoustic system of this embodiment activates the transmission / reception modules 109 and 205 between the portable acoustic device 200 and the vehicle-mounted acoustic device 100, and when the establishment of communication is detected, the headphones 202 of the portable acoustic device 200. The alerting control (step S8, step S36) for urging the user to remove is performed.

As a result, when communication between the portable audio device 200 and the in-vehicle audio device 100 is established, the occupant is alerted to remove the headphones 202.
For this reason, when an occupant carrying the portable audio device 200 gets into the vehicle, the removal of the headphones 202 is alerted to the establishment of communication between the portable audio device 200 and the in-vehicle audio device 100. Can recognize that it must be removed.
Therefore, in the vehicle acoustic system, the driver can recognize the external sound by preventing the passenger carrying the portable audio device 200 from wearing the headphones 202 while listening to music and getting into the vehicle. The driving safety of the vehicle can be improved.

It should be noted that the reproduction output device that is alerted for removal in this way is not limited to the headphones 202, but may be any device such as an earphone that can be worn by an occupant and reproduced and output personally.
In this embodiment, the alert control is performed from the voice guidance from the headphones 202, the display output from the display 206 of the portable audio device 200, the voice guidance from the in-vehicle speaker 14, and the display 104 of the in-vehicle audio device 100. (See FIG. 7).
As a result, the removal warning for removing the headphones 202 is performed by the existing portable audio device 200, the headphones 202 of the in-vehicle audio devices, the in-vehicle speakers 14, the displays 104 and 206, and the like.
Therefore, the removal awakening information can be transmitted to the occupant using the existing portable audio device 200 or the in-vehicle audio device 100 without separately providing an output means for transmitting the removal awakening information of the headphones 202.
In this embodiment, the alert information is output by the portable audio device 200 and the in-vehicle audio device, but the alert information may be output by any one.

Further, in this embodiment, when the removal of the headphones 202 is alerted by the alerting control, when the portable audio device 200 is being reproduced and the in-vehicle acoustic device 100 is activated, the portable audio device 200 reproduces and outputs it. The music being played is reproduced and output by the in-vehicle speaker 14 as it is.
As a result, the music that has been reproduced and output by the headphones 202 of the portable audio device 200 until then is reproduced and output by the in-vehicle speaker 14 of the in-vehicle audio device 100.
Therefore, even when the occupant is alerted and the headphones 202 are removed, the occupant can listen to the music that was being listened to with the headphones 202 with the in-vehicle speaker 14 as it is.
Therefore, it is possible to promote the detachment of the occupant's headphones 202 without obstructing the state in which the occupant enjoys music as much as possible.

  In this embodiment, the music data reproduced and output by the headphones 202 of the portable audio device 200 is once read by the in-vehicle audio device 100 and then reproduced and output by the in-vehicle speaker 14. Therefore, the music data of the portable audio device 200 may be directly transmitted to the in-vehicle speaker 14 and reproduced and output in real time.

  Next, a second embodiment will be described with reference to FIG. FIG. 8 is a control flowchart of the second embodiment corresponding to FIG. 5, and the same steps are denoted by the same reference numerals and description thereof is omitted. In addition, the other prerequisite components are the same as in the first embodiment.

  In this embodiment, the reproduction output of the portable audio device 200 is stopped in step S136. That is, if it is determined in step S37 that the portable audio device 200 is playing, the reproduction of the portable audio device 200 is stopped, and the reproduction of music from the headphones 202 is stopped.

  Thus, by stopping the reproduction output of the portable audio device 200, the occupant can be conscious of trying to remove the headphones 202 that cannot listen to music.

  Thus, also by control which stops the reproduction output of this portable audio equipment 200, removal of the headphones 202 can be alerted to a passenger | crew similarly to the above-mentioned 1st embodiment.

As described above, in this embodiment, when communication between the portable audio device 200 and the vehicle-mounted audio device is established, the reproduction output of the headphones 202 is controlled to be stopped (step S136).
As a result, it is possible to make the passenger aware of removing the headphones 202 from which music is not reproduced and output, and to alert the passengers to remove the headphones 202.
Therefore, it is possible to alert the occupant to remove the reproduction output means simply by stopping the reproduction output of the headphones 202.
Other operational effects are the same as in the first embodiment.

  Next, a third embodiment will be described with reference to FIG. FIG. 8 is also a control flowchart of the third embodiment corresponding to FIG. 5, and the same steps are denoted by the same reference numerals and description thereof is omitted. In addition, the other prerequisite components are the same as in the first embodiment.

  In this embodiment, the reproduction output state of the portable audio device 200 is changed in step S236. Specifically, the playback speed of the music data is delayed and the headphones 202 are changed so that the music is played back and output at a slow tempo.

  In this way, by changing the playback output state of the portable audio device 200, the passenger feels uncomfortable with the music listened to by the headphones 202. Therefore, the passenger is positively conscious of trying to remove the headphones 202. Can be generated.

  Therefore, also by control which changes the reproduction output state of this portable audio equipment 200, removal of headphones 202 can be alerted to a crew member like the above-mentioned 1st embodiment.

As described above, in this embodiment, when communication between the portable audio device 200 and the in-vehicle audio device 100 is established, control is performed so that the reproduction output state of the headphones 202 is changed.
As a result, it is possible to make the passenger feel uncomfortable listening to the music with the headphones 202, to make the consciousness to remove the headphones 202, and to alert the detachment of the headphones 202.

Therefore, by changing the reproduction output state of the headphones 202, it is possible to actively urge the passenger to remove the headphones 202.
Other methods for changing the playback output state of the headphones 202 include increasing the playback speed, changing the playback sound range to a high sound range or a low sound range, mixing abnormal sounds at predetermined intervals, It is conceivable to create a silent range at predetermined intervals.
Other operational effects are the same as in the first embodiment.

  As described above, the description has been made on the assumption that the wireless communication is automatically established, but in addition, even when the wireless communication is established even when the occupant manually establishes the wireless communication in the vehicle acoustic system. Attention control may be performed, and even when the premise communication is an acoustic system of a vehicle for wired communication, attention may be issued when the wired communication is established.

  Further, in the above embodiment, the alerting control of the portable audio device 200 is configured to be performed only during the reproduction of the portable audio device 200 (only when necessary), but the portable audio device 200 is turned on. Even when the reproduction is not performed, the alerting control may be performed.

  In this case, the passenger who carries the portable audio device 200 is always alerted, so that the possibility of wearing the headphones 202 in the passenger compartment can be reduced.

Furthermore, the alerting control may be performed only when the ON signal is detected by the IG switch and the engine is started. In this case, at least the alerting control is performed only when the vehicle can travel, so unnecessary alerting control is not performed, and it is possible to prevent the passenger from feeling troublesome.
As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The communication establishment detection means of the present invention corresponds to the CPU 101 that executes step S4 of the embodiment,
Hereinafter, similarly, the reproduction output means corresponds to the headphones 202,
The removal alerting means corresponds to the CPU 101 that executes step S8, the CPU 203 that executes step S36, the CPU 203 that executes step S136, and the CPU 203 that executes step S236,
The stopping means corresponds to the CPU 203 that executes step S136,
The reproduction output changing means corresponds to the CPU 203 that executes step S236.
The present invention is not limited to the above-described embodiment, but includes an embodiment applied to any vehicle acoustic system.

The schematic plan view of the motor vehicle which employ | adopted the acoustic system of this invention. The system block diagram of an acoustic system and a radio | wireless communications system. The control flowchart explaining the action | operation of a vehicle-mounted audio equipment. The control flowchart of vehicle-mounted acoustic control. The control flowchart explaining the action | operation of a portable audio equipment. “Audio Menu” screen shown on the display. (A) “Awareness” screen displayed on the display of the vehicle acoustic device, (b) “Awareness” screen displayed on the display of the portable acoustic device. The control flowchart explaining the action | operation of the portable audio equipment of 2nd embodiment. The control flowchart explaining the action | operation of the portable audio equipment of 3rd embodiment.

Explanation of symbols

41 ... Door lock switch 42 ... IG switch 100 ... In-vehicle acoustic device 101 ... CPU
109: Transmission / reception modules 200a, 200b ... portable audio equipment 203 ... CPU
205: Transmission / reception module

Claims (5)

A vehicle acoustic system comprising a portable audio device carried by an occupant and an in-vehicle audio device installed in the vehicle, and configured to reproduce music data held by the portable audio device on the in-vehicle audio device via communication means Because
Communication establishment detection means for detecting establishment of communication by means of communication means between the portable audio equipment and the in-vehicle audio equipment;
A vehicle sound system comprising: a removal awakening means that prompts removal of the reproduction output means of the portable audio device when the establishment of communication is detected by the communication establishment detection means. The removal alerting means performs removal alerting with at least one of audio output from the reproduction output means, display output from the display of the portable audio device, audio output from the in-vehicle speaker, and display output from the in-vehicle display. The vehicle acoustic system according to claim 1 configured as described above. The vehicle acoustic system according to claim 1, wherein the removal arousing unit is configured by a stopping unit that stops the reproduction output of the reproduction output unit of the portable audio device. 2. The vehicle acoustic system according to claim 1, wherein the detachment and arousing means is constituted by a reproduction output changing means for changing a reproduction output state of the reproduction output means of the portable audio equipment. When alerting the removal with the removal alerting means,
When the portable audio device is in a playback output state and the in-vehicle audio device is activated,
The acoustic system for a vehicle according to any one of claims 1 to 4, wherein a musical piece reproduced and output by the portable acoustic device is reproduced and output by an in-vehicle speaker.

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