WO2022185822A1

WO2022185822A1 - Display control system for vehicle

Info

Publication number: WO2022185822A1
Application number: PCT/JP2022/004108
Authority: WO
Inventors: 宏紀水野
Original assignee: 株式会社デンソー
Priority date: 2021-03-02
Filing date: 2022-02-02
Publication date: 2022-09-09
Also published as: JP2024057115A

Abstract

This display control system (1) for a vehicle comprises: an HCU (100) having a data processing unit (102) that processes sensing data in a vehicle, and an image generation unit (101) that generates vehicle image data relating to the vehicle on the basis of the sensing data acquired by the data processing unit (102); an MID (110) that displays the vehicle image data generated by the image generation unit (101); a first communication path (5) that connects the image generation unit (101) and the MID (110) so as to enable communication of data; and a second communication path (6) that connects the data processing unit (102) and the MID (110) so as to enable communication of data. When an abnormality is detected in the data acquired through the first communication path (5), the MID (110) generates and displays simple image data having a smaller amount of data than the vehicle image data, the simple image data being generated on the basis of the sensing data acquired from the data processing unit (102) through the second communication path (6).

Description

Vehicle display control system

Cross-reference to related applications

This application is based on Patent Application No. 2021-032740 filed in Japan on March 2, 2021, and the content of the underlying application is incorporated by reference in its entirety.

The present disclosure relates to a vehicle display control system.

Patent Document 1 discloses a display control system for vehicles that has a fail-safe function in the event that a control device or display device fails. Each display device of this vehicle display control system generates simplified image data and displays the simplified image data instead of the vehicle image data when an abnormality is detected in the vehicle image data acquired from the control device.

Japanese Patent Application Laid-Open No. 2017-035980

Each display device disclosed in Patent Document 1 includes a plurality of acquisition units that acquire sensing data from various sensors in order to generate simple image data. Therefore, the configuration of the vehicle display control system as a whole is complicated.

An object of the present disclosure is to provide a vehicle display control system that achieves a fail-safe function with a simple configuration.

A vehicle display control system according to a first aspect of the present disclosure includes:
A control device having a data processing unit that processes sensing data of a vehicle, and an image generation unit that generates vehicle image data regarding the vehicle based on the sensing data acquired by the data processing unit;
a display device that displays the vehicle image data generated by the image generator;
a first communication path connecting the image generator and the display device so as to enable data communication;
a second communication path connecting the data processing unit and the display device for data communication,
When the display device detects an abnormality in the data acquired through the first communication path, based on the sensing data acquired through the second communication path from the data processing unit, simple image data having a smaller amount of data than the vehicle image data is generated. Generate and display.

According to the first aspect, when an abnormality is detected in the data acquired through the first communication path, the display device generates simple image data with a small amount of data based on the sensing data acquired through the second communication path from the data processing unit. Generate and display. As a result, even if the vehicle image data through the first communication path is abnormal, the display device acquires sensing data from the data processing unit through another second communication path, thereby displaying image data related to the vehicle. can be maintained. Therefore, a fail-safe function that maintains image data display even when vehicle image data is abnormal can be realized by a simple configuration that is limited to addition of paths between devices.

It is a figure which shows the vehicle by which the display control system for vehicles by embodiment was mounted. 1 is a block diagram showing a detailed configuration of a vehicle display control system according to an embodiment; FIG. 4 is a flow chart showing a display control procedure according to the embodiment; 3 is a block diagram showing the detailed configuration of an HCU according to the embodiment; FIG.

Hereinafter, embodiments of the present disclosure will be described based on the drawings.

The vehicle display control system 1 of one embodiment shown in FIG. 1 generates image data based on vehicle sensing data, and displays the generated data in the interior of the vehicle. The vehicle display control system 1 includes an HCU (Human Machine Interface Control Unit) 100 that generates image data, and a plurality of display devices that display the image data. The vehicle display control system 1 of this embodiment includes a MID (Multi-Information Display) 110 and a CID (Center Information Display) 120 as display devices. As shown in FIG. 2, the HCU 100, the MID 110 and the CID 120 are connected so as to be able to communicate with each other.

The HCU 100 is a control device that controls vehicle information presentation. The HCU 100 has an image generator 101 and a data processor 102 . The data processing unit 102 is connected to the sensor group 2 via the communication interface 103 . The data processing unit 102 acquires sensor signals from the sensor group 2 . The sensor group 2 includes, for example, at least one of a vehicle speed sensor that detects vehicle speed, a rotation speed sensor that detects engine speed, and a travel distance sensor that detects travel distance.

The data processing unit 102 is connected to the vehicle switch group 3 via an input interface 104 . The data processing unit 102 acquires an input signal from the switch group 3 . The switch group 3 includes, for example, an air conditioner switch for operating the air conditioner, an audio switch for operating the sound, a light switch for operating the lights, and a mode switch for operating the driving mode. , at least one

The data processing unit 102 generates sensing data based on sensor signals from the sensor group 2 and input signals from the switch group 3. Sensing data is generated so as to represent at least vehicle speed information among information related to driving, such as vehicle speed information or total travel distance information according to a sensor signal, and indicator information according to an input signal. Data processing unit 102 is connected to MID 110 via communication interface 107 . The data processing unit 102 and the MID 110 are connected for data communication via a second communication path 6 independent of the first communication path 5, which will be described later. The communication interface 107 that constitutes the second communication path 6 converts sensing data into a data signal and transmits the data signal to the MID 110 . The communication interface 107 transmits the data signal converted from the sensing data to the MID 110 even when no data abnormality (to be described later) is detected.

The image generator 101 in the HCU 100 is connected to the data processor 102 via an internal bus 109 . The image generation unit 101 acquires sensing data generated by the data processing unit 102 and generates image data based on the acquired data. The image generator 101 and the MID 110 are connected via the first communication path 5 so as to be capable of data communication. The first communication path 5 includes a signal conversion IC (Integrated Circuit) of the HCU 100, a signal conversion IC 112 of the MID 120, and a first harness 130 connecting the

signal conversion ICs

106 and 112 together. The signal conversion IC 106 that constitutes the first communication path 5 converts the image data into a data signal and transmits the data signal to the MID 110 . The image generation unit 101 and the CID 120 are connected by the third communication path 7 so as to be capable of data communication. A signal conversion IC (Integrated Circuit) 108 that constitutes the third communication path 7 converts the image data into a data signal and transmits the data signal to the CID 120 . The image generation unit 101 having the above configuration can display image data on the

display devices

110 and 120 corresponding to the generated image data. The image generator 101 also has a function of presenting audio information to the passengers in the vehicle by being connected to the speaker 4 of the vehicle via the audio interface 105 .

The MID 110 is arranged in front of the driver's seat in the interior of the vehicle as a first display device. The MID 110 displays the first vehicle image data as image data representing information related to driving of the vehicle in color or in monochrome for the passengers inside the vehicle. The first vehicle image data is, for example, image data generated by the image generator 101 of the HCU 100 so as to represent at least vehicle speed information among vehicle speed information, total travel distance information, indicator information, and the like.

The MID 110 is connected to the image generator 101 of the HCU 100 via the signal conversion IC 112. The signal conversion IC 112 that constitutes the first communication path 5 with the image generator 101 receives data signals from the signal conversion IC 106 of the HCU 100 . A GDC (Graphics Display Controller) 111 in the MID 110 processes the first vehicle image data converted from the received signal by the signal conversion IC 112 . At the same time, the GDC 111 in the MID 110 controls the display of the first vehicle image data by the display 114 such as a liquid crystal display and the transmitted illumination of the display 114 by the backlight illumination 115 .

The data processing unit 102 and the MID 110 are connected by the second communication path 6 so that data communication is possible. The second communication path 6 is composed of the communication interface 107, the communication interface 113 of the MID 110, and a second harness 140 connecting the

communication interfaces

107 and 113 so as to enable data communication. The second harness 140 forming the second communication path 6 is different from the first harness 130 forming the first communication path 5 . A communication interface 113 that constitutes the second communication path 6 receives data signals from the communication interface 107 of the HCU 100 . The GDC 111 in the MID 110 processes sensing data converted from the received signal by the communication interface 113 . As described above, the data signal from the communication interface 107 is transmitted to the MID 110 even when no data abnormality (to be described later) is detected. Therefore, the GDC 111 in the MID 110 acquires sensing data even when no data abnormality is detected. The GDC 111 in the MID 110 also has a function of driving a buzzer 118 via a drive circuit 117 to give a notification sound to passengers inside the vehicle.

The CID 120 is arranged as a second display device in the center cluster of the instrument panel in the interior of the vehicle. The CID 120 displays the second vehicle image data in color or in monochrome for the occupants in the vehicle as image data representing information related to vehicle driving and interior comfort. The second image data is image data generated by the image generation unit 101 of the HCU 100 so as to represent at least one of, for example, a navigation guide screen, an air conditioner operation screen, an audio equipment operation screen, and the like. .

The CID 120 is connected to the image generator 101 of the HCU 100 via the signal conversion IC 121. A signal conversion IC 121 that constitutes the third communication path 7 with the image generator 101 receives data signals from the signal conversion IC 108 of the HCU 100 . An MPU (Micro Processing Unit) 122 in the CID 120 processes the second vehicle image data converted from the received signal by the signal conversion IC 121 . At the same time, the MPU 122 controls the display of the second vehicle image data by the display device 123 such as a liquid crystal type, and the transmitted illumination of the display device 123 by the backlight illumination 124 .

The configuration of the HCU 100 will be described in more detail below with reference to FIG.

The image generator 101 and the data processor 102 in the HCU 100 are configured on different IC chips.

The components of the HCU 100 are powered through a plurality of different power systems including at least a first power system 150 and a second power system 160. Each of the plurality of power supply systems includes a power supply circuit, and supplies power to components of the HCU 100 from a power supply such as an in-vehicle battery (not shown). The components of the HCU 100 are divided into a plurality of powered groups including at least a first powered group 1001 powered through a first power supply system 150 and a second powered group 1002 powered through a second power supply system 160. can be separated.

The first power-supplied group 1001 includes at least an IC chip on which the image generation unit 101 is configured and a signal conversion IC 106 . The first powered group 1001 may further include an audio interface 105 and a signal conversion IC 108 . Second power-supplied group 1002 includes at least an IC chip on which data processing unit 102 is configured and communication interface 107 . Second powered group 1002 may further include communication interface 103 and input interface 104 .

With the above configuration, the IC chip forming the image generation unit 101 and the IC chip forming the data processing unit 102 are powered through different

power supply systems

150 and 160, respectively. Further, the signal conversion IC 106 forming the first communication path 5 and the communication interface 107 forming the second communication path 6 are powered through different

power supply systems

150 and 160, respectively.

Next, a configuration for detecting a malfunction of the vehicle display control system 1 will be described.

The image generation unit 101 detects communication disruption with the MID 110 via the first communication path 5 . The data processing unit 102 detects communication interruption with the MID 110 via the second communication path 6 . A communication interruption is detected, for example, when there is no response from the MID 110 for a certain period of time or longer.

Similarly, the GDC 111 of the MID 110 detects communication disruption with the image generation unit 101 via the first communication path 5 . The GDC 111 detects communication interruption via the first communication path 5 when there is no communication from the image generation unit 101 for a certain period of time or more. Furthermore, the GDC 111 detects communication interruption with the data processing unit 102 via the second communication path 6 . The GDC 111 detects communication interruption via the second communication path 6 when there is no communication from the data processing unit 102 for a certain period of time or more. When the MID 110 detects a communication disruption via the first communication path 5 or the second communication path 6, the driving circuit 117 drives the buzzer 118 to generate a notification sound to notify the passenger of the communication disruption. .

The CID 120 indicates a communication disruption indicating a communication disruption between the HCU 100 and the MID 110 when a communication disruption is detected via the first communication path 5 and when a communication disruption is detected via the second communication path 6. Display image data.

The image generation unit 101 stores test image data for abnormality detection in advance. The image generator 101 periodically reads test image data based on the test image data, and transmits the test image data to the MID 110 through the first communication path 5 . The nonvolatile memory 116 of the MID 110 stores test image data similar to that of the image generator 101 . Test image data is data used as a substitute for vehicle image data for abnormality detection.

The GDC 111 of the MID 110 detects data anomalies by checking the test image data acquired through the first communication path 5 . Specifically, the GDC 111 compares the acquired test image data with the test image data prestored in the nonvolatile memory 116 of the MID 110 . As a result of the comparison, if there is a difference between these test image data, the GDC 111 determines that the acquired test image data is abnormal. For example, if the image generation unit 101 that generates image data is out of order, or if the test image data cannot be obtained through the first communication path 5 due to disconnection of the communication line of the first communication path 5, etc., the test image data Discrepancies occur in the data. In this way, the GDC 111 determines that the data is abnormal when normal image data cannot be acquired from the image generation unit 101 . When the MID 110 detects an abnormality in the image data, the driving circuit 117 drives the buzzer 118 to generate a notification sound for informing the passenger of the occurrence of the abnormality in the image data. Also, the GDC 111 transmits the detection result to the HCU 100 through the first communication path 5 or the second communication path 6 . When the GDC 111 detects data abnormality, it transmits a signal indicating that the data is abnormal to the HCU 100 . When the GDC 111 does not detect data abnormality, it transmits a signal indicating that the data is not abnormal to the HCU 100 .

The MID 110 detects its own failure by checking its internal circuitry. When the MID 110 detects its own failure, the drive circuit 117 drives the buzzer 118 to generate a notification sound for notifying the occupant of its own failure. Furthermore, MID 110 transmits the self-failure detection result to HCU 100 .

The procedure for display control by the vehicle display control system 1 will be described below with reference to the flowchart of FIG. The vehicle display control system 1 periodically executes the processing shown in FIG.

In S11 shown in FIG. 3, the image generation unit 101 of the HCU 100 determines whether or not the MID 110 has detected its own failure. It is determined whether or not both communication disruptions have been detected. When a failure of the MID 110 is detected, or when both communication disruption via the first communication path 5 and communication disruption via the second communication path 6 are detected, the MID 110 displays the first vehicle image data. I can't. That is, in S11, it is determined whether or not the MID 110 can display the first vehicle image data.

If at least one of the communication through the first communication path 5 and the communication through the second communication path 6 is not interrupted and no failure of the MID 110 is detected, the image generation unit 101 determines whether the MID 110 determines that the first vehicle image data can be displayed. When it is determined that the MID 110 can display the first vehicle image data, the display control flow proceeds to S12. On the other hand, when it is determined that the MID 110 cannot display the first vehicle image data, the display control flow proceeds to S14.

In S14 when the first vehicle image data cannot be displayed, the HCU 100 and the CID 120 jointly perform display control in the first fail-safe mode. In the first fail-safe mode, image generator 101 of HCU 100 generates substitute image data instead of the first vehicle image data normally displayed by MID 110 . The alternative image data represents only a part of the first vehicle image data, which is predetermined as minimum information necessary for driving the vehicle. The alternative image data is generated so as to include at least information representing vehicle speed information among information related to driving. That is, the substitute image data is image data with a smaller amount of data than the first vehicle image data normally displayed by the MID 110 . Therefore, the MPU 122 of the CID 120 displays the alternative image data in the alternative display area that is part of the image display area of the display 123 . That is, the CID 120 displays alternative image data for the first vehicle image data in addition to the second vehicle image data. The CID 120 displays to the MID 110 that the image data cannot be displayed. For example, when the MID 110 is out of order, the CID 120 displays failure image data indicating that the MID 110 is out of order. CID 120 displays communication disruption image data representing communication disruption between HCU 100 and MID 110 when communication via first communication path 5 and communication via second communication path 6 are both disrupted. good too. In S14, the MID 110 drives the buzzer 118 with the drive circuit 17 to generate a notification sound.

In S15 following S14, the HCU 100 determines whether the abnormal state in which the MID 110 cannot display the first vehicle image data continues. When the abnormal state continues, the display control flow returns to S14, thereby continuing the display control in the first fail-safe mode. On the other hand, if the abnormal state does not continue, the display control flow proceeds to S13, which will be described later.

So far, the case where the MID 110 cannot display the first vehicle image data has been described. On the other hand, in S12 when the first vehicle image data can be displayed, the GDC 111 determines whether or not the test image data acquired through the first communication path 5 has an abnormality. If there is no abnormality in the test image data, the display control flow proceeds to S13. On the other hand, if there is an abnormality in the test image data, the display control flow proceeds to S16.

In S16, the HCU 100 and MID 110 jointly perform display control in the second failsafe mode. In the second failsafe mode, GDC 111 of MID 110 acquires sensing data from data processing unit 102 of HCU 100 through second communication path 6 . The GDC 111 generates simple image data based on the acquired sensing data. Similar to the alternative image data generated in the first fail-safe mode, the simplified image data represents only a portion of information that is predetermined as minimum information necessary for driving the vehicle. That is, the simplified image data is image data with a smaller amount of data than the first vehicle image data normally displayed by the MID 110 . Therefore, the GDC 111 causes the display 114 to display the simplified image data. Further, the GDC 111 drives the buzzer 118 by the drive circuit 17 to generate a notification sound to notify the occupant of the occurrence of an abnormality in the first vehicle image data.

In S17 following S16, the HCU 100 determines whether the image data continues to be abnormal. When the abnormal state continues, the display control flow returns to S16, thereby continuing the display control in the second fail-safe mode. On the other hand, if the abnormal state does not continue, the display control flow proceeds to S13. In S13, the HCU 100 performs normal display control. In normal display control, the image generator 101 of the HCU 100 causes the MID 110 to display the first vehicle image data and the CID 120 to display the second vehicle image data.

(Effect)
The effects of this embodiment described above will be described below.

According to this embodiment, when an abnormality is detected in the vehicle image data acquired through the first communication path 5, the MID 110, based on the sensing data acquired through the second communication path 6 from the data processing unit 102, selects the data with a small amount of data. Generate and display simple image data. As a result, even if the vehicle image data through the first communication path 5 is abnormal, the MID 110 acquires the sensing data from the data processing unit through the second communication path 6 to display image data related to the vehicle. can be maintained. Therefore, a fail-safe function that maintains image data display even when vehicle image data is abnormal can be realized by a simple configuration that is limited to addition of paths between devices.

According to this embodiment, the CID 120 displays alternative image data when a failure of the MID 110 is detected. According to this, even when the MID 110 fails, the display of the image data related to the driving of the vehicle can be maintained.

According to this embodiment, when a failure of the MID 110 is detected, the CID 120 displays failure image data indicating that the MID 110 is in failure. According to this, through the visual information displayed on the CID 120, the occupants of the vehicle can be notified of the failure of the MID 110. FIG.

According to this embodiment, the MID 110 emits a notification sound when it detects an abnormality in the data acquired through the first communication path 5 . According to this, it is possible to notify the occupants of the vehicle of data abnormality through voice information.

According to this embodiment, the MID 110 emits a notification sound when it detects its own failure. According to this, the occupants of the vehicle can be notified of the failure of the MID 110 through the voice information.

According to this embodiment, both the communication disruption between the image generation unit 101 and the MID 110 via the first communication path 5 and the communication disruption between the data processing unit 102 and the MID 110 via the second communication path 6 are detected. CID 120 then displays the alternative image data. According to this, even when the MID 110 cannot acquire neither the image data nor the sensing data, it is possible to maintain the display of the image data related to the driving of the vehicle.

According to the present embodiment, out of communication interruption between the image generation unit 101 and the MID 110 via the first communication path 5 and communication interruption between the data processing unit 102 and the MID 110 via the second communication path 6, , is detected, the CID 120 displays communication disruption image data representing the communication disruption. According to this, through the visual information displayed on the CID 120, the occupants of the vehicle can be notified of the disruption of communication between the HCU 100 and the MID 110. FIG.

According to this embodiment, the image generation unit 101 and the data processing unit 102 are configured on different IC chips. According to this, sensing data generation by the data processing unit 102 can be continued even when a problem occurs in the IC chip forming the image generation unit 101 . Therefore, the MID 110 can generate simple image data based on sensing data obtained from the data processing unit 102 even when normal data cannot be obtained from the image generating unit 101 due to a defect in the IC chip that constitutes the image generating unit 101. can be displayed as

According to this embodiment, the IC chip forming the image generating unit 101 and the IC chip forming the data processing unit 102 are powered through different

power supply systems

150 and 160, respectively. According to this, sensing data generation by the data processing unit 102 can be continued even when a problem occurs in the first power supply system 150 that supplies power to the IC chip forming the image generation unit 101 . Therefore, the MID 110 can generate and display simple image data based on sensing data obtained from the data processing unit 102 even when normal data cannot be obtained from the image generating unit 101 due to a problem in the first power supply system 150. becomes possible.

According to this embodiment, the first harness 130 forming the first communication path 5 and the second harness 140 forming the second communication path 6 are different. According to this, even when the data communication between the image generation unit 101 and the MID 110 via the first communication path 5 is interrupted due to disconnection of the first harness 130 or the like, the data can be transmitted via the second communication path 6 . Data communication between processing unit 102 and MID 110 may continue. Therefore, even if the MID 110 cannot acquire normal data from the image generation unit 101 via the first communication path 5 due to disconnection of the first harness 130 or the like, the MID 110 can acquire data from the data processing unit 102 via the second communication path 6. It is possible to generate and display simple image data based on the sensing data.

According to the present embodiment, the MID 110 acquires sensing data from the data processing unit 102 through the second communication path 6 even when no abnormality is detected in vehicle image data acquired through the first communication path 5 . According to this, when the MID 110 detects an abnormality in the vehicle image data, the MID 110 can quickly generate and display the simple image data based on the acquired sensing data.

(Other embodiments)
Although the embodiments of the present disclosure have been described above, the present disclosure is not to be construed as being limited to the embodiments, and can be applied to various embodiments and combinations within the scope of the present disclosure. can.

In the embodiment, the MID 110 and CID 120 are used as display devices, but other display devices may be used. For example, a HUD (Head-Up Display) or the like may be employed as the first display device or the second display device.

In the embodiment, the substitute image is displayed on the second display device when the first display device fails, but the substitute image may be displayed on the first display device when the second display device fails.

Although the vehicle display control system 1 provided with two display devices has been described in the embodiment, the vehicle display control system 1 may be provided with three or more display devices.

The order of each step of the display control flow described in the embodiment may be changed as appropriate. For example, the image data abnormality determination in S12 may be performed before the determination of whether the MID 110 can display the first vehicle image data in S11.

In the embodiment, the IC chip forming the image generating unit 101 and the IC chip forming the data processing unit 102 are supplied with power through different

power supply systems

150 and 160, respectively. However, the IC chip forming the image generation unit 101 and the IC chip forming the data processing unit 102 may be supplied with power through a common power supply system.

In the embodiment, the signal conversion IC 106 forming the first communication path 5 and the communication interface 107 forming the second communication path 6 are supplied with power through different power supply systems. However, the signal conversion IC 106 and the communication interface 107 may be powered through a common power supply system.

In the embodiment, the IC chip forming the image generation unit 101 and the signal conversion IC 106 are powered through the common power supply system 150 . However, the IC chip and the signal conversion IC 106 forming the image generation unit 101 may be supplied with power through different power supply systems.

In the embodiment, the IC chip forming the data processing unit 102 and the communication interface 107 are powered through the common power supply system 160 . However, the IC chip forming the data processing unit 102 and the communication interface 107 may be powered through different power supply systems.

In the embodiment, the first harness 130 forming the first communication path 5 and the second harness 140 forming the second communication path 6 are different. However, the first communication path 5 and the second communication path 6 may be configured by a common harness.

Claims

A control device comprising: a data processing unit (102) for processing sensing data in a vehicle; and an image generation unit (101) for generating vehicle image data regarding the vehicle based on the sensing data acquired by the data processing unit. (100) and
a display device (110) for displaying the vehicle image data generated by the image generator;
a first communication path (5) connecting the image generator and the display device so as to enable data communication;
a second communication path (6) that connects the data processing unit and the display device for data communication,
When detecting an abnormality in the data acquired through the first communication path, the display device, based on the sensing data acquired through the second communication path from the data processing unit, determines that the amount of data is larger than the vehicle image data. A display control system for vehicles that generates and displays simple image data with a small amount of data.
A second display device (120) different from the first display device as the display device, and a second vehicle image different from the first vehicle image data as the vehicle image data displayed by the first display device. further comprising a second display device for displaying the data;
The control device generates substitute image data having a data amount smaller than that of the first vehicle image data when the first display device detects its own failure,
2. The vehicle display control system according to claim 1, wherein said second display device displays said alternative image data when said first display device detects its own failure.
3. The vehicle according to claim 2, wherein said second display device displays failure image data indicating that said first display device is out of order when said first display device detects a failure in itself. Display control system.
The vehicle display control system according to any one of claims 2 and 3, wherein the first display device generates a notification sound when detecting the abnormality.
The vehicle display control system according to any one of claims 2 to 4, wherein the first display device generates a notification sound when detecting its own failure.
A second display device (120) different from the first display device as the display device, and a second vehicle image different from the first vehicle image data as the vehicle image data displayed by the first display device. Further comprising the second display device for displaying data,
The control device can detect a communication disruption with the first display device via the first communication path and a communication disruption with the first display device via the second communication path. and
The control device generates substitute image data having a data amount smaller than that of the first vehicle image data when the first display device detects its own failure,
The second display device interrupts communication between the control device and the first display device via the first communication path, and the control device and the first display device via the second communication path. 6. The vehicular display control system according to any one of claims 1 to 5, wherein the substitute image data is displayed when both of a communication disruption between and are detected by the control device.
The second display device interrupts communication between the control device and the first display device via the first communication path, and the control device and the first display device via the second communication path. 7. The vehicle display control system according to claim 6, wherein, when at least one of the communication interruptions between and is detected, the communication interruption image data representing the communication interruption is displayed.
The vehicle display control system according to any one of claims 1 to 7, wherein the image generation unit and the data processing unit are configured on different IC chips.
The vehicle display control system according to claim 8, wherein the IC chip forming the image generating unit and the IC chip forming the data processing unit are supplied with power through different power supply systems (150, 160).
The vehicle display control according to any one of claims 1 to 9, wherein the first harness (130) forming the first communication path is different from the second harness (140) forming the second communication path. system.
The vehicular display according to any one of claims 1 to 10, wherein said display device acquires said sensing data from said data processing unit via said second communication path even when said abnormality is not detected. control system.