Patent Application
20240135812
The present disclosure claims priority to Japanese Patent Application No. 2022-167880, filed on Oct. 19, 2022, the contents of which application are incorporated herein by reference in their entirety.
The present disclosure relates to a technique for notifying a user of a vehicle of information. In particular, the present disclosure relates to a technique for displaying a notification to a user of a vehicle on a display device.
Patent Literature 1 discloses a sign display device for a vehicle that displays sign information to an occupant. When a plurality of pieces of sign information are detected or when a large amount of character information is included in the sign information, the sign display device displays simplified information obtained by simplifying the sign information.
A technique for displaying a notification to a user of a vehicle on a display device is considered. In some cases, the display device has a limited area for displaying the notification. In such a case, it is conceivable to perform overlay display that overlays and displays a plurality of notifications on the limited display area. However, the user of the vehicle may feel a sense of strangeness with the overlay display, depending on types of the plurality of notifications subject to the overlay display.
An object of the present disclosure is to provide a technique capable of suppressing a user's sense of strangeness when a notification to a user of a vehicle is displayed on a display device.
A first aspect is directed to an information notification system.
The information notification system includes one or more processors configured to display a notification to a user of a vehicle on a display device.
A first type notification is a notification of road traffic information on a road or traffic around the vehicle.
A second type notification is a notification of information not belonging to the road traffic information or a notification that no road traffic information is available.
The one or more processors are further configured to prohibit overlaying the first type notification and the second type notification when displayed on the display device. When the display device has only a single display area for displaying the notification, the one or more processors are further configured to select and display one of the first type notification and the second type notification in the single display area.
A second aspect is directed to an information notification method for displaying a notification to a user of a vehicle on a display device.
A first type notification is a notification of road traffic information on a road or traffic around the vehicle/A second type notification is a notification of information not belonging to the road traffic information or a notification that no road traffic information is available.
The information notification method includes:
prohibiting overlaying the first type notification and the second type notification when displayed on the display device; and
when the display device has only a single display area for displaying the notification, selecting and displaying one of the first type notification and the second type notification in the single display area.
A third aspect is directed to an information notification program for displaying a notification to a user of a vehicle on a display device.
A first type notification is a notification of road traffic information on a road or traffic around the vehicle.
A second type notification is a notification of information not belonging to the road traffic information or a notification that no road traffic information is available.
The information notification program, when executed by a computer, causes the computer to execute:
prohibiting overlaying the first type notification and the second type notification when displayed on the display device; and
when the display device has only a single display area for displaying the notification, selecting and displaying one of the first type notification and the second type notification in the single display area.
According to the present disclosure, overlaying of the first type notification and the second type notification having different meanings is prohibited. It is thus possible to prevent the user from feeling a sense of strangeness with the notification. In addition, it is possible to prevent the user from confusing the notifications.
Embodiments of the present disclosure will be described with reference to the accompanying drawings.
The information notification system 10 is provided with a display device and displays a notification to the user O on the display device. For example, the information notification system 10 recognizes a traffic sign S installed on a road on which the vehicle 1 travels, and displays a content of the recognized traffic sign S. However, types of the notification are not limited thereto. Various examples of the notification to the user O will be described later.
The communication device 20 communicates with the outside of the information notification system 10. For example, the communication device 20 communicates with a map management server that manages high-definition three-dimensional map information. As another example, the communication device 20 may communicate with an information service center that collects and distributes a variety of real-time information (e.g., traffic jam information, accident information, and signal indication information).
The sensor group 30 is mounted on the vehicle 1. The sensor group 30 includes a camera 40, a vehicle state sensor 50, and the like. The camera 40 takes a picture of a situation around the vehicle 1 and captures an image 140 indicating the situation around the vehicle 1. The vehicle state sensor 50 detects a state of the vehicle 1. For example, the vehicle state sensor 50 detects a speed of the vehicle 1. In addition, the sensor group 30 may include a recognition sensor such as a LIDAR and the like.
The user interface 60 receives an input of information from the user O of the vehicle 1 and presents information to the user O of the vehicle 1. When the user O is a driver or an occupant on board the vehicle 1, the user interface 60 is mounted on the vehicle 1. When the user O is a remote operator who remotely operates the vehicle 1, the user interface 60 is included in the remote operator terminal.
The user interface 60 includes an input device 70, a display device 80, and a speaker 90. Examples of the input device 70 include a touch panel, a switch, and the like. Examples of the display device 80 include a meter panel, a display, a head-up display (HUD), and the like.
The control device 100 is a computer that controls the information notification system 10. The control device 100 includes one or more processors 110 (hereinafter, simply referred to as a processor 110) and one or more memory devices 120 (hereinafter, simply referred to as a memory device 120). The processor 110 executes a variety of processing. For example, the processor 110 includes a central processing unit (CPU). The memory device 120 stores a variety of information. Examples of the memory device 120 include a volatile memory, a nonvolatile memory, a hard disk drive (HDD), a solid state drive (SSD), and the like. It should be noted that the one or more processors 110 may be installed on the vehicle 1, may be included in the remote operator terminal, or may be distributed to the vehicle 1 and the remote operator terminal. Similarly, the one or more memory devices 120 may be installed on the vehicle 1, may be included in the remote operator terminal, or may be distributed to the vehicle 1 and the remote operator terminal.
An information notification program 130 is a computer program for controlling the information notification system 10. A variety of processing by the information notification system 10 may be implemented by the processor 110 executing the information notification program 130. The information notification program 130 is stored in the memory device 120. Alternatively, the information notification program 130 may be recorded on a non-transitory computer-readable recording medium.
The memory device 120 further stores an image 140, vehicle state information 150, navigation information 160, notification-related information 200, and the like.
The image 140 is captured by the camera 40 mounted on the vehicle 1. When the processor 110 is included in the remote operator terminal, the processor 110 communicates with the vehicle 1 to acquire the image 140.
The vehicle state information 150 is acquired by the vehicle state sensor 50 mounted on the vehicle 1. For example, the vehicle state information 150 includes the speed of the vehicle 1. When the processor 110 is included in the remote operator terminal, the processor 110 communicates with the vehicle 1 to acquire the vehicle state information 150.
The navigation information 160 includes map information and position information of the vehicle 1. The position information of the vehicle 1 is acquired from an in-vehicle system that controls the vehicle 1. The map information is stored in advance in the memory device 120. Alternatively, the map information may be high-definition three-dimensional map information provided from a map management server. The processor 110 is able to acquire the high-definition three-dimensional map information from the map management server via the communication device 20.
The processor 110 displays a notification to the user O of the vehicle 1 on the display device 80. The notification-related information 200 is information related to the notification. Hereinafter, various examples of the notification-related information 200 will be described in detail.
The notification-related information 200 includes road traffic information 210. The road traffic information 210 is information on a roads or traffic around the vehicle 1. Examples of the road traffic information 210 include traffic sign information 211, speed limit information 212, traffic signal information 213, traffic jam information 214, accident information 215, and the like.
The traffic sign information 211 is information indicating a content of a traffic sign installed on a road around the vehicle 1. Examples of the traffic sign include a stop sign, a speed limit sign, a no-passing sign, and the like. The processor 110 recognizes the traffic sign by analyzing the image 140 captured by the camera 40. Typically, the processor 110 recognizes the traffic sign from the image 140 by using image recognition AI (Artificial Intelligence). The image recognition AI is generated in advance through a learning method such as deep learning. For example, the image recognition AI is trained to detect a variety of traffic signs in the image 140 and to identify a type of each detected traffic sign.
The processor 110 may determine whether the recognized traffic sign is related to the vehicle 1. For example, while the vehicle 1 is traveling in a first lane, a traffic sign installed in another lane may be recognized. Therefore, when a lateral position of a certain traffic sign with respect to the vehicle 1 is equal to or greater than a threshold value, the processor 110 may determine that the certain traffic sign is not installed in the first lane, that is, the certain traffic sign is unrelated to the vehicle 1. As another example, no stop sign is present on an expressway. Therefore, the processor 110 may determine that a stop sign recognized when the speed of the vehicle 1 is equal to or higher than a threshold value is unrelated to the vehicle 1. Information on the traffic sign unrelated to the vehicle 1 may be excluded from the traffic sign information 211.
As another example, an installation position and a type for each traffic sign may be registered in the map information (high-definition three-dimensional map information). In this case, the processor 110 may acquire the traffic sign information 211 from the map information. That is, the processor 110 may acquire the traffic sign information 211 from the navigation information 160 described above.
The speed limit information 212 is information on a speed limit of a road on which the vehicle 1 is traveling. For example, when recognizing a speed limit sign installed on a road, the processor 110 may read numbers (figures) shown on the speed limit sign based on the image of the recognized speed limit sign. In other words, the processor 110 may recognize the speed limit designated by the speed limit sign on the basis of the image of the recognized speed limit sign.
As another example, a speed limit for each road may be registered in the map information (high-definition three-dimensional map information). In this case, the processor 110 may acquire the speed limit information 212 from the map information. That is, the processor 110 may acquire the speed limit information 212 from the navigation information 160 described above.
As still another example, the processor 110 may identify a road type (for example, an expressway) of a road on which the vehicle 1 is traveling based on the navigation information 160. Then, the processor 110 may acquire a legal speed limit set for the road type as the speed limit information 212.
The traffic signal information 213 indicates whether a traffic signal (traffic light) is present or not within a certain range ahead of the vehicle 1. For example, an installation position of each traffic signal is registered in the map information (high-definition three-dimensional map information). In this case, the processor 110 is able to determine, based on the navigation information 160, whether a traffic signal is present or not within a certain range ahead of the vehicle 1.
The traffic signal information 213 may indicate a signal indication (blue, yellow, red) of the traffic signal present ahead of the vehicle 1. For example, the processor 110 recognizes a traffic signal by analyzing the image 140 captured by the camera 40. Further, the processor 110 recognizes the signal indication of the traffic signal by analyzing the image 140 of the traffic signal.
As another example, real-time information of signal indications of a large number of traffic signals may be aggregated in an information service center. In this case, the processor 110 can communicate with the information service center via the communication device 20 to acquire information of the signal indication of the traffic signal present ahead of the vehicle 1. The position of the vehicle 1 is obtained from the navigation information 160.
As yet another example, a traffic signal itself may transmit its own signal indication information. In this case, the processor 110 can communicate with the traffic signal via the communication device 20 to acquire the signal indication information of the traffic signal.
The traffic signal information 213 includes at least one of presence or absence of the traffic signal and the signal indication described above.
The traffic jam information 214 is information indicating a traffic jam status of a road ahead of the vehicle 1. For example, real-time traffic jam status information at various locations is aggregated in an information service center. The processor 110 can communicate with the information service center via the communication device 20 to acquire the traffic jam information 214 regarding the road ahead of the vehicle 1. The position of the vehicle 1 is obtained from the navigation information 160.
The accident information 215 is information indicating presence or absence of an accident on a road ahead of the vehicle 1. For example, real-time accident information at various locations is aggregated in an information service center. The processor 110 can communicate with the information service center via the communication device 20 to acquire the accident information 215 regarding the road ahead of the vehicle 1. The position of the vehicle 1 is obtained from the navigation information 160.
The notification-related information 200 further includes user setting information 220. The user setting information 220 is information regarding a setting customized by the user O of the vehicle 1. The user O can customize a variety of settings by the use of the input device 70.
As an example, a “speed warning function” is considered. The speed warning function is a function of issuing a warning to the user O when the speed of the vehicle 1 exceeds the speed limit. The speed of the vehicle 1 is obtained from the vehicle state information 150. The speed limit is obtained from the speed limit information 212 described above. The processor 110 determines whether or not the speed of the vehicle 1 exceeds the speed limit. When the speed of the vehicle 1 exceeds the speed limit, the processor 110 issues a warning to the user O via the user interface 60. For example, the processor 110 emits a warning sound from the speaker 90. As another example, the processor 110 may display an alert on the display device 80.
The user O can turn ON or OFF the speed warning function by the use of the input device 70. Here, “turning ON” means activation and “turning OFF” means deactivation. When the speed warning function is turned OFF, no warning is issued even if the speed of the vehicle 1 exceeds the speed limit. The user setting information 220 indicates whether the speed warning function is turned ON or OFF.
As another example, the user setting information 220 may indicate ON/OFF of a driving assist function. Examples of the driving assist function include an automated driving function, a risk avoidance control function, a lane departure prevention function, and the like. The risk avoidance control function automatically performs at least one of steering control and deceleration control in order to reduce a risk of collision between the vehicle 1 and an object (e.g., a surrounding vehicle, a pedestrian). The lane departure prevention function prevents the vehicle 1 from departing from a travel lane.
The first type notification N1 is a notification of the road traffic information 210 described in the above Section 2-1. That is, the first type notification N1 notifies the user O of the information on the road or traffic around the vehicle 1. Examples of the first type notification N1 include a traffic sign notification N11, a speed limit notification N12, a traffic signal notification N13, a traffic jam notification N14, an accident notification N15, and the like.
The traffic sign notification N11 is a notification of the traffic sign information 211. For example, the image itself of the traffic sign recognized by using the camera 40 is used as the traffic sign notification N11. As another example, an icon representing the traffic sign may be used as the traffic sign notification N11.
The speed limit notification N12 is a notification of the speed limit information 212. For example, an icon or characters (numbers, figures) representing the speed limit are used as the speed limit notification N12. As another example, the image itself of the speed limit sign recognized by using the camera 40 may be used as the speed limit notification N12. As still another example, an icon representing the speed limit sign may be used as the speed limit notification N12.
The traffic signal notification N13 is a notification of the traffic signal information 213. For example, an icon or characters representing the presence or absence of the traffic signal are used as the traffic signal notification N13. As another example, a predetermined icon or character s representing the signal indication are used as the traffic signal notification N13.
The traffic jam notification N14 is a notification of the traffic jam information 214. For example, an icon or characters representing the presence or absence of the traffic jam are used as the traffic jam notification N14.
The accident notification N15 is a notification of the accident information 215. For example, an icon or characters representing the presence or absence of the accident are used as the accident notification N15.
The second type notification N2 is a notification other than the first type notification N1 described above. That is, the second type notification N2 is a notification of information not belonging to the road traffic information 210. Alternatively, the second type notification N2 may be a notification that no road traffic information 210 is available.
An example of the second type notification N2 is a “user setting notification N21” regarding the setting customized by the user O. The content of the setting customized by the user O is obtained from the user setting information 220 described in the above Section 2-2.
For example, as described above, the user O can turn ON or OFF the speed warning function. When the speed warning function is turned OFF, no warning is issued even if the speed of the vehicle 1 exceeds the speed limit. In some embodiments, the user O may be notified of a fact that “the speed warning function is turned OFF.” The user setting notification N21 includes such a speed warning function-OFF notification (i.e., a notification that the speed warning function is turned OFF). For example, a predetermined icon is used as the speed warning function-OFF notification.
As another example, the user setting notification N21 may include a notification that “the driving assist function is turned ON” or “the driving assist function is turned OFF.”
Another example of the second type notification N2 is an “auxiliary notification N22.” The auxiliary notification N22 notifies that no road traffic information 210 to be displayed is acquired although there is a function of displaying the first type notification N1. For example, the above-described speed limit notification N12 notifies the speed limit of the road on which the vehicle 1 is traveling. However, when the speed limit information 212 at a travel position of the vehicle 1 cannot be acquired, it is not possible to display the speed limit notification N12. Instead, the auxiliary notification N22 that no speed limit information 212 is available although there is a function of displaying the speed limit notification N12 may be displayed. For example, a predetermined icon is used as the auxiliary notification N22.
In addition, the second type notification N2 may include a notification that requests the user O to perform hands-on.
The processor 110 displays a necessary notification on the display device 80 based on the notification-related information 200. The display device 80 has one or more display areas for displaying notifications. The display area is hereinafter referred to as a slot. One slot is large enough to display one notification, but is not large enough to display two or more notifications without overlay (overlapping).
In view of the above, according to the present embodiment, the overlay display of the first type notification N1 and the second type notification N2 is prohibited. That is, when the notification candidates include both the first type notification N1 and the second type notification N2, the processor 110 prohibits overlaying the first type notification N1 and the second type notification N2 in the single slot 85. It is thus possible to prevent the user O from feeling a sense of strangeness with the notification. In addition, it is possible to prevent the user O from confusing the notifications.
A case where the display device 80 has only a single slot 85 and the notification candidates include both the first type notification N1 and the second type notification N2 is considered. In this case, the processor 110 selects only one of the first type notification N1 and the second type notification N2, and displays the selected one in the single slot 85. This process is hereinafter referred to as a “selective display process.” A specific example of the selective display process will be described below.
For example, the user setting notification N21 is the speed warning function-OFF notification. The user O is able to clearly recognize that the speed warning function is turned OFF.
The processor 110 permits the overlay display of a plurality of first type notifications N1. For example, as shown in
A case where the notification candidates include a plurality of first type notifications N1 and the second type notification N2 will be considered. In this case as well, the processor 110 permits the overlay display of the plurality of first type notifications N1. That is, the processor 110 overlays and displays the plurality of first type notifications N1 in the first slot 81. Meanwhile, the processor 110 displays the second type notification N2 in the second slot 82. That is, also in this case, the overlay display of the first type notification N1 and the second type notification N2 is prohibited. Therefore, it is possible to display both the first type notification N1 and the second type notification N2 while suppressing the sense of strangeness and the confusion.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2022-167880 | Oct 2022 | JP | national |
