Control device and control method

Abstract

To provide more stereophonic sound to occupants and save an installation space of a speaker.SOLUTION: A control device is a control device that controls a display device and an external speaker group mounted on a vehicle. The display device includes: a display surface arranged toward at least one of a plurality of seats in the vehicle; a first speaker that outputs sound by vibrating a right surface of the display surface relative to the center in the left-right direction; and a second speaker that outputs sound by vibrating a left surface of the display surface relative to the center. The external speaker group includes: a third speaker that is disposed on the right side of the first seat faced by the display surface to output the sound of a right channel; and a fourth speaker that is disposed on the left side of the first seat to output the sound of a left channel. The control device detects the seating position of a user and switches the channels of the sound output from the first speaker and the second speaker according to the seating position.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control device and a control method. [Background technology]

[0002] A display and a speaker may be installed in a vehicle such as a passenger car. A technology has been proposed in which the speaker is installed in the center of the vehicle and outputs stereo L channel sound from the speaker to a passenger sitting in the right seat and stereo R channel sound to a passenger sitting in the left seat (see Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2017 / 175304 [Patent Document 2] Japanese Patent Application Publication No. 64-020200 [Patent Document 3] Japanese Patent Application Publication No. 6-165298 Summary of the Invention [Problem to be solved by the invention]

[0004] Placing the display and speakers in the center of the vehicle allows passengers to hear stereo sound, but because installation space inside a vehicle is limited, placing the display and speakers in the center of the vehicle makes it difficult to make the display larger.

[0005] An object of one aspect of the disclosed technology is to provide a control device and a control method that can provide passengers with sound with a more stereoscopic feel while saving the installation space for speakers. [Means for solving the problem]

[0006] One aspect of the disclosed technology is exemplified by a control device as follows. The control device is a control device that controls a display device and an external speaker group. The display device has a display surface arranged facing at least one of a plurality of seats mounted in a vehicle, a first speaker that outputs sound by vibrating a surface to the right of the center in the left-right direction of the display surface, and a second speaker that outputs sound by vibrating a surface to the left of the center of the display surface. The external speaker group has a third speaker that is arranged on the right side of a first seat among the plurality of seats to which the display surface faces and outputs sound of a right channel, and a fourth speaker that is arranged on the left side of the first seat and outputs sound of a left channel. The control device detects a seating position of a user seated in at least one of the plurality of seats, and switches channels of sounds to be output by the first speaker and the second speaker according to the seating position. Effect of the Invention

[0007] According to the disclosed technology, it is possible to provide passengers with sound with a more stereoscopic feel while saving space required for installing speakers. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of a vehicle according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating an example of a display speaker according to the embodiment. [Diagram 3] FIG. 3 is a diagram showing an example of connections between a display speaker, a rear right speaker, a rear left speaker, and a seating sensor in the embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of a hardware configuration of the control device according to the embodiment. [Diagram 5] FIG. 5 is a diagram illustrating an example of a processing block of the control device according to the embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of a processing flow of the control device according to the embodiment. [Figure 7]FIG. 7 is a diagram showing an example of a vehicle according to a first modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Embodiment> Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a vehicle 100 according to an embodiment. FIG. 1 is a diagram showing the vehicle 100 from above. In addition, in FIG. 1, the ceiling is omitted in order to explain the interior of the vehicle 100. The vehicle 100 is, for example, a passenger car. The vehicle 100 includes a driver's seat 1, a passenger seat 2, a right rear seat 3, a center rear seat 4, and a left rear seat 5 as seats for passengers. The driver's seat 1 and the passenger seat 2 are arranged in a line along the width direction of the vehicle 100. In addition, the right rear seat 3, the center rear seat 4, and the left rear seat 5 are arranged in a line along the width direction of the vehicle 100 behind the driver's seat 1 and the passenger seat 2. A dashboard 10 is arranged in front of the driver's seat 1 and the passenger seat 2.

[0010] In the vehicle 100, a display speaker 20 is disposed in front of the central rear seat 4 (the center in the width direction of the vehicle 100) and behind the driver's seat 1 and passenger seat 2. A front right door 6, a front left door 7, a rear right door 8, and a rear left door 9 are disposed in the vehicle 100 for passengers to use when getting in and out of the vehicle. A rear right speaker 31 is disposed in the rear right door 8 disposed on the right side of the right rear seat 3. A rear left speaker 32 is disposed in the rear left door 9 disposed on the left side of the left rear seat 5. The rear right speaker 31 is an example of a "third speaker". The rear left speaker 32 is an example of a "fourth speaker". The rear right speaker 31 and the rear left speaker 32 are examples of an "external speaker group".

[0011] The driver's seat 1 is a seat located in the front and on the right side inside the vehicle 100. The passenger seat 2 is a seat located in the front and on the left side inside the vehicle 100. The right rear seat 3 is a seat located in the rear and on the right side inside the vehicle 100. The center rear seat 4 is a seat located in the rear and in the center in the left-right direction inside the vehicle 100. The left rear seat 5 is a seat located in the rear and on the left side inside the vehicle 100.

[0012] The right rear seat 3 is provided with a seating sensor 53 for detecting that an occupant is seated in the right rear seat 3. The center rear seat 4 is provided with a seating sensor 54 for detecting that an occupant is seated in the center rear seat 4. The left rear seat 5 is provided with a seating sensor 55 for detecting that an occupant is seated in the left rear seat 5. There is no limitation on the method of detecting an occupant by the seating sensors 53, 54, 55. The seating sensors 53, 54, 55 may be, for example, pressure-sensitive sensors provided on the seat surfaces of the right rear seat 3, the center rear seat 4, and the left rear seat 5, respectively. The seating sensors 53, 54, 55 may also be sensors for detecting the use of seat belts provided corresponding to the right rear seat 3, the center rear seat 4, and the left rear seat 5, respectively. When the seating sensors 53, 54, 55 detect that an occupant is seated, they output a detection signal indicating that the occupant is seated to the control device 40 described later. The seating sensors 53, 54, and 55 are examples of the "sensor."

[0013] The display speaker 20 is a device equipped with a display unit that displays images and a speaker. The display speaker 20 is disposed with its display surface facing toward the right rear seat 3, the center rear seat 4, and the left rear seat 5 (facing backwards) so that users seated in the right rear seat 3, the center rear seat 4, and the left rear seat 5 can view images.

[0014] 2 is a diagram showing an example of a display speaker 20 according to an embodiment. The display speaker 20 has a display surface 21, a right speaker 22, and a left speaker . The display surface 21 is a display that displays images. The display surface 21 is, for example, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an inorganic electroluminescence (EL) panel, or an organic EL panel.

[0015] The right speaker 22 outputs sound by vibrating the right half surface 21A of the display surface 21 with an actuator 24 arranged behind the right half surface 21A. The left speaker 23 outputs sound by vibrating the left half surface 21B of the display surface 21 with an actuator 25 arranged behind the left half surface 21B. The display surface 21 is capable of outputting two channels of sound by having the right speaker 22 and the left speaker 23. In FIG. 2, the boundary between the right half surface 21A and the left half surface 21B is illustrated by a dotted line A1 to facilitate understanding. The right speaker 22 is an example of a "first speaker." The left speaker 23 is an example of a "second speaker."

[0016] The display speaker 20 will be described below as being arranged so as to be located in front of the center rear seat 4 among the right rear seat 3, center rear seat 4, and left rear seat 5 which are aligned in a row in the width direction, as an example, but is not limited to this. The display speaker 20 may be arranged so as to be located in front of the right rear seat 3 or the left rear seat 5. When the display speaker 20 is arranged so as to be located in front of the center rear seat 4, the right speaker 22 of the display speaker 20 is located on the left side of the right rear seat 3. The left speaker 23 of the display speaker 20 is located on the right side of the left rear seat 5.

[0017] Returning to Fig. 1, the rear right speaker 31 and the rear left speaker 32 are speakers that output the sound of the video displayed on the display speaker 20. The rear right speaker 31 is a speaker disposed on the right side of the right rear seat 3. The rear left speaker 32 is a speaker disposed on the left side of the left rear seat 5.

[0018] FIG. 3 is a diagram showing an example of connections among the display speaker 20, the rear right speaker 31, the rear left speaker 32, and the seating sensors 53, 54, and 55 in the embodiment. FIG. 3 also shows a control device 40 that controls the display speaker 20, the rear right speaker 31, and the rear left speaker 32. The control device 40 and the rear right speaker 31 are connected by a cable N1. The control device 40 and the rear left speaker 32 are connected by a cable N2. The control device 40 and the right speaker 22 are connected by a cable N3. The control device 40 and the left speaker 23 are connected by a cable N4. The control device 40 and the seating sensors 53, 54, and 55 are connected by a signal line D1. The control device 40 receives detection signals from the seating sensors 53, 54, and 55 via the signal line D1.

[0019] The control device 40 causes the right speaker 22, the left speaker 23, the rear right speaker 31, and the rear left speaker 32 to output sound via cables N1, N2, N3, and N4. For example, the control device 40 causes the rear right speaker 31 to output sound on the right channel. For example, the control device 40 causes the rear left speaker 32 to output sound on the left channel. The control device 40 switches which channel (left or right) the right speaker 22 and the left speaker 23 should output sound from, based on detection signals from seating sensors 53, 54, and 55.

[0020] The control device 40 is an information processing device mounted on the vehicle 100. The control device 40 may be, for example, a control device that controls a car navigation system mounted on the vehicle 100. The control device 40 may also be an Electronic Control Unit (ECU) mounted on the vehicle 100. The control device 40 may also be provided separately from the car navigation system and the ECU for controlling the right speaker 22, the left speaker 23, the rear right speaker 31, and the rear left speaker 32. The control device 40 controls each of the rear right speaker 31, the rear left speaker 32, the right speaker 22, and the left speaker 23. This controls which left or right channel sound is output.

[0021] 4 is a diagram showing an example of a hardware configuration of a control device 40 according to an embodiment. The control device 40 includes a Central Processing Unit (CPU) 401, a main memory unit 402, an auxiliary memory unit 403, a first connection unit 404, a second connection unit 405, and a connection bus B1. The CPU 401, the main memory unit 402, the auxiliary memory unit 403, the first connection unit 404, and the second connection unit 405 are mutually connected by the connection bus B1.

[0022] The CPU 401 is also called a microprocessor unit (MPU) or a processor. The CPU 401 is not limited to a single processor, and may have a multiprocessor configuration. A single CPU 401 connected to a single socket may have a multicore configuration. At least a part of the processing executed by the CPU 401 may be performed by a processor other than the CPU 401, for example, a dedicated processor such as a digital signal processor (DSP), a graphics processing unit (GPU), a numerical calculation processor, a vector processor, or an image processing processor. At least a part of the processing executed by the CPU 401 may be executed by an integrated circuit (IC) or other digital circuit. At least a part of the CPU 401 may include an analog circuit. The integrated circuit includes a large scale integrated circuit (LSI), an application specific integrated circuit (ASIC), and a programmable logic device (PLD). The PLD includes, for example, a field-programmable gate array (FPGA). The CPU 401 may be a combination of a processor and an integrated circuit. The combination is called, for example, a microcontroller unit (MCU), a system-on-a-chip (SoC), a system LSI, a chipset, etc. In the control device 40, the CPU 401 expands a program stored in the auxiliary storage unit 403 into a working area of ​​the main storage unit 402, and controls peripheral devices through the execution of the program. This allows the control device 40 to execute processing that meets a predetermined purpose. The main storage unit 402 and the auxiliary storage unit 403 are recording media that the CPU 401 can read.

[0023] The main memory unit 402 is exemplified as a memory unit directly accessed by the CPU 401. The main memory unit 402 includes a random access memory (RAM) and a read only memory (ROM).

[0024] The auxiliary storage unit 403 stores various programs and various data in a readable and writable recording medium. The auxiliary storage unit 403 is also called an external storage device. An operating system (OS), various programs, various tables, etc. are stored in the auxiliary storage unit 403. The external devices, etc. include, for example, other information processing devices and external storage devices connected via a computer network, etc.

[0025] The auxiliary storage unit 403 is, for example, an erasable programmable ROM (EPROM), a solid state drive (SSD), a hard disk drive (HDD), etc. In addition, the auxiliary storage unit 403 is, for example, a compact disc (CD) drive device, a digital versatile disc (DVD) drive device, a Blu-ray (registered trademark) disc (BD) drive device, etc.

[0026] The first connection portion 404 is a connection interface with the rear right speaker 31, the rear left speaker 32, the right speaker 22, and the left speaker 23. The second connection portion 405 is a connection interface with the seating sensors 53, 54, and 55.

[0027] <Processing block of the control device 40> 5 is a diagram showing an example of a processing block of the control device 40 according to the embodiment. The control device 40 includes a detection unit 41 and a switching unit 42. The control device 40 executes the processes of each unit of the control device 40, such as the detection unit 41 and the switching unit 42, by the CPU 401 executing a computer program deployed in an executable manner in the main storage unit 402.

[0028] The detection unit 41 receives detection signals from the seating sensors 53, 54, and 55. The switching unit 42 switches the channels of the sounds to be output from the right speaker 22 and the left speaker 23 based on the detection signals received by the detection unit 41.

[0029] For example, when the detection unit 41 receives a detection signal from the seating sensor 53 but does not receive detection signals from the seating sensors 54, 55, the switching unit 42 switches the channel of the sound to be output from the right speaker 22 and the left speaker 23 so that the occupant seated in the right rear seat 3 can hear sound with a stereo feel.

[0030] That is, the switching unit 42 causes the right speaker 22 to output the left channel sound. By outputting the sound in this manner, the right channel sound is output from the rear right speaker 31 arranged on the right side of the right rear seat 3, and the left channel sound is output from the right speaker 22, which is the speaker arranged on the left side of the right rear seat 3 and is closest to the occupant seated in the right rear seat 3. Therefore, for the occupant seated in the right rear seat 3, the right channel sound is heard from the rear right speaker 31 arranged immediately to the right of the occupant, and the left channel sound is heard from the right speaker 22 arranged immediately to the left of the occupant. Therefore, the occupant seated in the right rear seat 3 can hear a sound with a more stereo feeling. Note that the switching unit 42 may output the sound to the right speaker 22 and the rear right speaker 31 by performing an acoustic process that suppresses the influence of delay of the sound due to the distance between the right speaker 22 and the rear right speaker 31 and the occupant so that the position is aligned with the ears of the occupant seated in the right rear seat 3.

[0031] For example, when the detection unit 41 receives a detection signal from the seating sensor 55 but does not receive detection signals from the seating sensors 53, 54, the switching unit 42 switches the channel of the sound to be output from the right speaker 22 and the left speaker 23 so that the occupant seated in the left rear seat 5 can hear sound with a stereo feeling.

[0032] That is, the switching unit 42 outputs the right channel sound to the left speaker 23 located on the right side of the left rear seat 5. By outputting the sound in this manner, the right channel sound is output from the left speaker 23, which is the speaker located on the right side of the left rear seat 5 that is closest to the left rear seat 5, and the left channel sound is output from the rear left speaker 32 located on the left side of the left rear seat 5. Therefore, for the passenger seated in the left rear seat 5, the right channel sound is heard from the left speaker 23 located immediately to the right of the passenger, and the left channel sound is heard from the rear left speaker 32 located immediately to the left of the passenger. Therefore, the passenger seated in the left rear seat 5 can hear a sound with a more stereoscopic feeling. Note that the switching unit 42 may output the sound to the left speaker 23 and the rear left speaker 32 by performing an acoustic process that suppresses the influence of delay of the sound due to the distance between the left speaker 23 and the rear left speaker 32 and the passenger, so that the position is aligned with the ears of the passenger seated in the left rear seat 5.

[0033] For example, when the detection unit 41 receives detection signals from the seating sensors 53 and 55 but does not receive a detection signal from the seating sensor 54, the switching unit 42 switches between the right and left rear seats 3 and 5 so that the passengers seated in the right and left rear seats 5 hear sounds with a stereo effect. The channel of the sound output from the speaker 22 and the left speaker 23 is switched.

[0034] That is, the switching unit 42 causes the right speaker 22 to output the left channel sound and causes the left speaker 23 to output the right channel sound. By outputting the sound in this manner, the passenger seated in the right rear seat 3 can hear the right channel sound from the rear right speaker 31 arranged immediately to the right of the passenger, and the left channel sound from the right speaker 22 arranged immediately to the left of the passenger. Also, the passenger seated in the left rear seat 5 can hear the right channel sound from the left speaker 23 arranged immediately to the right of the passenger, and the left channel sound from the rear left speaker 32 arranged immediately to the left of the passenger. Therefore, it is possible to make the passenger seated in the right rear seat 3 and the passenger seated in the left rear seat 5 hear a sound with a more stereo feeling. The switching unit 42 may output the sound to the right speaker 22 and the rear right speaker 31 by performing an acoustic process that suppresses the influence of sound delay due to the distance between the right speaker 22 and the rear right speaker 31 and the passenger seated in the right rear seat 3. In addition, the switching unit 42 may perform acoustic processing to suppress the effects of sound delay and the like due to the distance between the left speaker 23 and the rear left speaker 32 and the occupant seated in the left rear seat 5, so that the sound is localized to the ears of the occupant seated in the left rear seat 5, and output the sound to the left speaker 23 and the rear left speaker 32.

[0035] For example, when the detection unit 41 receives a detection signal from the seating sensor 54, the switching unit 42 causes the right speaker 22 to output sound from the right channel and the left speaker 23 to output sound from the left channel.

[0036] <Processing flow of the control device 40> 6 is a diagram showing an example of a process flow of the control device 40 according to the embodiment. Hereinafter, an example of the process flow of the control device 40 will be described with reference to FIG.

[0037] In step S1, the detection unit 41 detects the seated position of the occupant based on the detection signals from the seating sensors 53, 54, and 55. In step S2, the switching unit 42 switches the left and right sound channels to be output from the right speaker 22 and the left speaker 23 according to the position of the occupant detected in step S1. Then, the switching unit 42 causes the right speaker 22 and the left speaker 23 to output the sound of the switched channel.

[0038] <Effects of the embodiment> According to this embodiment, the left and right sound channels to be output from the right speaker 22 and the left speaker 23 are switched depending on the seating position of the occupant. Therefore, according to this embodiment, it is possible to provide the occupants of the vehicle 100 with sound having a stronger stereoscopic feel. Also, in this embodiment, the right speaker 22 and the left speaker 23 output sound by vibrating the display surface 21 using actuators 24, 25 arranged on the rear surface of the display surface 21. That is, the right speaker 22 and the left speaker 23 are not arranged on the left and right of the display surface 21, but are arranged superimposed on the display surface 21. According to this embodiment, it is not necessary to arrange speakers on the left and right of the display surface 21, so that the installation area of ​​the display speaker 20 can be saved.

[0039] In this embodiment, the right speaker 22 is disposed on the left side of the right rear seat 3, and the left speaker 23 is disposed on the right side of the left rear seat 5. When an occupant is seated in the right rear seat 3, sound on the left channel is output from the right speaker 22, which is the speaker disposed on the left side of the right rear seat 3 that is closest to the occupant seated in the right rear seat 3. When an occupant is seated in the left rear seat 5, sound on the right channel is output from the left speaker 23, which is the speaker disposed on the right side of the left rear seat 5 that is closest to the occupant seated in the left rear seat 5. Therefore, according to this embodiment, sound can be more appropriately provided for each of the occupants seated in the right rear seat 3 and the left rear seat 5. It can provide a stereo sound.

[0040] According to this embodiment, the positions of the occupants can be detected by the seating sensors 53, 54, and 55 provided on the right rear seat 3, the center rear seat 4, and the left rear seat 5, respectively. Therefore, according to this embodiment, the positions of the occupants can be detected more accurately, and the left and right sound channels to be output from the right speaker 22 and the left speaker 23 can be switched according to the detected positions of the occupants.

[0041] When the detection unit 41 receives a detection signal from the seating sensor 53 but does not receive detection signals from the seating sensors 54 and 55, the switching unit 42 may cause both the right speaker 22 and the left speaker 23 to output left channel sounds. When the detection unit 41 receives a detection signal from the seating sensor 55 but does not receive detection signals from the seating sensors 53 and 54, the switching unit 42 may cause both the right speaker 22 and the left speaker 23 to output right channel sounds.

[0042] <First Modification> In the embodiment described above, the display speaker 20 is disposed in front of the central rear seat 4 (the center in the width direction of the vehicle 100), and behind the driver's seat 1 and passenger seat 2. However, the position of the display speaker 20 is not limited to this position. The display speaker 20 may be disposed on the dashboard 10, for example. In the first modified example, a configuration in which the display speaker 20 is disposed on the dashboard 10 will be described.

[0043] Fig. 7 is a diagram showing an example of a vehicle 100A according to a first modified example. Like Fig. 1, Fig. 7 is a diagram showing the vehicle 100A as seen from above, and the ceiling is not shown. In the vehicle 100A, the display speaker 20 is disposed in the center in the width direction of the dashboard 10 (between the driver's seat 1 and the passenger seat 2). Therefore, the right speaker 22 is disposed on the left side of the driver's seat 1, and the left speaker 23 is disposed on the right side of the passenger seat 2.

[0044] In vehicle 100A, a front right speaker 33 that outputs right channel sound is disposed in front right door 6 located on the right side of driver's seat 1. A front left speaker 34 that outputs left channel sound is disposed in front left door 7 located on the left side of passenger seat 2. In addition, a seating sensor 51 is disposed in driver's seat 1. A seating sensor 52 is disposed in passenger seat 2.

[0045] In such a vehicle 100A, the control device 40 can provide a sound with a stronger stereoscopic feeling to the occupant seated in the driver's seat 1 by the same process as in the embodiment. In addition, the control device 40 can provide a sound with a stronger stereoscopic feeling to the occupant seated in the passenger seat 2.

[0046] That is, the detection unit 41 receives detection signals from the seating sensors 51 and 52. For example, when the detection unit 41 receives a detection signal from the seating sensor 51, the switching unit 42 may cause the right speaker 22 to output a left channel sound. By outputting sounds in this manner, a right channel sound is output from the front right speaker 33 located on the right side of the occupant seated in the driver's seat 1, and a left channel sound is output from the right speaker 22, which is the speaker located on the left side of the occupant seated in the driver's seat 1 and is closest to the occupant seated in the driver's seat 1. Therefore, a sound with a stronger stereo feeling can be provided to the occupant seated in the driver's seat 1.

[0047] Furthermore, for example, when the detection unit 41 receives a detection signal from the seating sensor 52, the switching unit 42 may cause the left speaker 23 to output a sound of the right channel. By outputting the sound in this manner, the sound of the right channel is output from the left speaker 23, which is the speaker located to the right of the occupant seated in the passenger seat 2 and is closest to the occupant seated in the passenger seat 2, The left channel sound is output from the front left speaker 34 located on the left side of the passenger seat 2. Therefore, the passenger seated in the passenger seat 2 can be provided with sound that has a stronger stereoscopic feel.

[0048] The display speaker 20 may be disposed on the ceiling of the vehicle 100, 100A.

[0049] The embodiments and modifications disclosed above can be combined with each other.

[0050] <Computer-readable recording medium> An information processing program that causes a computer or other machine or device (hereinafter, computer, etc.) to realize any of the above functions can be recorded on a recording medium that can be read by the computer, etc. Then, the computer, etc. can provide the function by reading and executing the program from the recording medium.

[0051] Here, a computer-readable recording medium refers to a recording medium that stores information such as data and programs through electrical, magnetic, optical, mechanical, or chemical action and can be read by a computer. Examples of such recording media that can be removed from a computer include flexible disks, magneto-optical disks, Compact Disc Read Only Memory (CD-ROM), Compact Disc-Recordable (CD-R), Compact Disc-ReWriterable (CD-RW), Digital Versatile Disc (DVD), Blu-ray Disc (BD), Digital Audio Tape (DAT), 8mm tape, flash memory, external hard disk drives, and Solid State Drives (SSD). Examples of recording media that are fixed to a computer include built-in hard disk drives, SSDs, and ROMs. [Explanation of symbols]

[0052] 1. Driver's seat 2...Passenger seat 3. Right rear seat 4. Center rear seat 5. Left rear seat 6. Front right door 7. Front left door 8. Right rear door 9. Rear left door 10. Dashboard 20··Display Speaker 21·Display surface 21A Right half 21B Left side 22 Right speaker 23 Left speaker 24 Actuator 25··Actuator 31 Rear right speaker 32 Rear left speaker 33 Front right speaker 34 Front left speaker 40. Control device 41 Detection unit 42 Switching section 51··Seat sensor 52 Seat sensor 53 Seat sensor 54··Seat sensor 55··Seat sensor 100 Vehicles 100A··Vehicle 401··CPU 402...Main memory 403...Auxiliary storage unit 404··First connection part 405··Second connection part B1··Connecting bus D1 Signal line N1··Cable N2··Cable N3··Cable N4··Cable

Claims

1. A control device that controls a display device and an external speaker group mounted on a vehicle, The display device includes: a display surface disposed toward at least one of a plurality of seats of the vehicle; a first speaker that outputs sound by vibrating a surface to the right of the center of the display surface in the left-right direction; a second speaker that outputs sound by vibrating a surface to the left of the center of the display surface, The external speaker group includes: a third speaker disposed to the right of a first seat among the plurality of seats to which the display surface is directed, and outputs a right channel sound; and a fourth speaker disposed to the left of the first seat, and outputs a left channel sound; The control device includes: Detecting a seating position of a user seated in at least one of the plurality of seats; switching channels of sounds to be output from the first speaker and the second speaker in accordance with the seating position; Control device.

2. the first speaker is disposed to the left of the first seat, When the control device detects that the user is seated in the first seat, the control device causes the first speaker to output a left channel sound of the sound to be output from the first speaker. The control device according to claim 1 .

3. the second speaker is disposed to the right of the first seat, When the control device detects that the user is seated in the first seat, the control device causes the second speaker to output a right channel sound of the sound to be output from the second speaker. The control device according to claim 1 .

4. the first seat is disposed in front of the display device, When the control device detects that the user is seated in the first seat, the control device causes the first speaker to output a right channel sound of the sound to be output from the first speaker, and causes the second speaker to output a left channel sound of the sound to be output from the second speaker. The control device according to claim 1 .

5. The seats are provided with sensors for detecting whether the users are seated, The control device detects the seating position based on a detection signal from the sensor. A control device according to any one of claims 1 to 4.

6. A control method for controlling a display device and an external speaker group mounted on a vehicle, comprising: The display device includes: a display surface disposed toward at least one of a plurality of seats of the vehicle; a first speaker that outputs sound by vibrating a surface to the right of the center of the display surface in the left-right direction; a second speaker that outputs sound by vibrating a surface to the left of the center of the display surface, The external speaker group includes: a third speaker disposed on the right side of a first seat among the plurality of seats to which the display surface faces and outputs a right channel sound; and a fourth speaker that outputs a sound of the panel. The control method includes: Detecting a seating position of a user seated in at least one of the plurality of seats; The control device switches channels of sounds to be output from the first speaker and the second speaker in accordance with the seating position. Control methods.

Images