Method and device for controlling an on-board display system in a vehicle for displaying warning lights for a differential lock system

Abstract

The present invention relates to a method and device for controlling a vehicle display system. To this end, a first graphic object (223) representing a maximum authorized speed is displayed within a defined content area of ​​a human-machine interface displayed on a screen (14). Data representing the activation of a vehicle differential lock are received. A second graphic object (321) representing the activation of the differential lock and a threshold value associated with this lock is displayed with the defined content area. Figure 3 (for the abstract)

Description

Title of the invention: Method and device for controlling an on-board display system in a vehicle for displaying warning lights of a differential locking system Technical field

[0001] The invention relates to methods and devices for controlling a display system of a vehicle, in particular a motor vehicle. The invention relates in particular to a method and a device for controlling the display of a graphic object representing the activation of a differential locking system of the vehicle. The invention also relates to a method and a device for controlling a driving assistance system of a vehicle. Technological background

[0002] Some contemporary vehicles have several screens on board to display information useful to the driver for driving the vehicle as well as comfort information, such as, for example, information for interacting with the infotainment system, also called the IVI system (from the English "In-Vehicle Infotainment" or in French "Infodivertissement embargo"), of the vehicle.

[0003] Among these screens, it is known to embed one or more LCD (Liquid Crystal Display) type screens, for example TFT (Thin-Film Transistor) type, or OLED (Organic Light-Emitting Diode) type.

[0004] The integration of such screens makes it possible, for example, to control, via a graphical Human-Machine Interface (HMI) displayed on such screens, the operating status of the systems embedded in the vehicle, for example the AD AS systems (from the English “Advanced Driver-Assistance System” or in French “Advanced Driving Assistance System”).

[0005] The multiplication of systems embedded in the vehicle and the multiplication of means of command or control of these systems lead to a complexity of 1THM by which a user interacts with the embedded systems to control them, with in particular a multiplication of icons, displayed messages or command shortcuts whose control and management are consequently complicated for a user. The user experience is degraded and the attention of the driver of the vehicle can be reduced when different messages are displayed on the on-board screen(s).

[0006] For example, for vehicles equipped with a differential lock system (called RDL system, from the English "Rear Differential Lock" or in French "Blockage du différer arrière"), a message is displayed to alert the driver when he exceeds a threshold and maximum speed that the vehicle should not exceed when the RDL system is activated and the differential is locked. When the vehicle speed fluctuates around this threshold value, that is to say when the vehicle speed varies by passing below and above this threshold value, the alert message is displayed each time the vehicle speed passes above the threshold value, which is disturbing for the driver and can divert his attention from the road he is traveling on.

[0007] Summary of the present invention

[0008] An object of the present invention is to solve at least one of the problems of the technological background described above.

[0009] Another object of the present invention is, for example, to improve the control of a display system of a vehicle, in particular an automobile.

[0010] Another object of the present invention is for example to improve the user experience with regard to the control of a differential locking system.

[0011] Another object of the present invention is, for example, to improve safety in a vehicle.

[0012] According to a first aspect, the present invention relates to a method for controlling a display system of a vehicle, the display system comprising a set of display screens, the vehicle having a speed limit indication system, called the SLI system, and a differential locking system, called the RDL system, the SLI system being in a so-called activated state, the method comprising the following steps: - display control of a first graphic object representative of a maximum authorized speed on a portion of road on which the vehicle (10) is traveling in a determined content of a human-machine interface, called HMI, associated with the SLI system and displayed on at least one display screen of the set of display screens; - receiving RDL system activation data representative of activation of the vehicle differential lock; - display control of a second graphic object representative of activation of the differential lock and of a threshold speed associated with the differential lock in the determined content associated with the SLI system displayed on the at least one display screen following the reception of the activation data from the RDL system.

[0013] The use of the graphical interface of the SLI system to display a graphical object (for example an icon or a signal indicator) when the differential lock is activated makes it possible to reduce the variety of content displayed to the driver of the vehicle, the graphical object thus displayed informing the driver both about the activation of the RDL system and about the associated recommended speed limit.

[0014] This allows the driver to have direct access to information relating to speed limits in the same content displayed on one or more screens, i.e. the graphic content associated with the SLI system dedicated to indicating speed limits.

[0015] This also makes it possible to optimize the development costs of a vehicle by reducing the volume of content of the vehicle's HMI(s) by grouping the information relating to speed limits into a single content, i.e. the content of the HMI associated with the SLI system.

[0016] According to a variant, the first graphic object is displayed in a first zone of the determined content, the second graphic object is displayed in a second zone of the determined content adjacent to the first zone.

[0017] According to another variant, the method further comprises the following steps: - reception of speed data representative of a current vehicle speed; - comparison of the current speed with the threshold speed, the display control of the second graphic object being a function of a result of the comparison.

[0018] According to an additional variant, when the current speed is lower than the threshold speed, the second graphic object is displayed according to a first state, and when the current speed is higher than the threshold speed, the second graphic object is displayed according to a second state representative of an alert for exceeding the threshold speed.

[0019] According to another variant, the first state corresponds to a fixed display state of the second graphic object and the second state corresponds to a flashing display state of the second graphic object.

[0020] According to an additional variant, the method further comprises the following steps: - comparison of the threshold speed with the maximum authorized speed; - assignment of the threshold speed to a set speed of a cruise control system and / or a vehicle speed limitation system when the threshold speed is lower than the maximum authorized speed; - control of the speed regulation system and / or the speed limitation system according to the set speed.

[0021] According to another variant, the at least one display screen corresponds to: - a dashboard of the vehicle located behind a steering wheel of the vehicle from a point of view corresponding to a driver's seat of the vehicle; and / or - a display device for a vehicle head-up display system.

[0022] According to a second aspect, the present invention relates to a device for controlling a display system of a vehicle, the device comprising a memory associated with a processor configured for implementing the steps of the method according to the first aspect of the present invention.

[0023] According to a third aspect, the present invention relates to a vehicle display system comprising a device as described above according to the second aspect of the present invention and at least one display screen communicatively connected to the device as described above according to the second aspect of the present invention.

[0024] According to a fourth aspect, the present invention relates to a vehicle, for example of the automobile type, comprising a device as described above according to the second aspect of the present invention or a system as described above according to the third aspect of the present invention.

[0025] According to a fifth aspect, the present invention relates to a computer program which comprises instructions adapted for executing the steps of the method according to the first aspect of the present invention, in particular when the computer program is executed by at least one processor.

[0026] Such a computer program may use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other desirable form.

[0027] According to a sixth aspect, the present invention relates to a computer-readable recording medium on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the present invention.

[0028] On the one hand, the recording medium may be any entity or device capable of storing the program. For example, the medium may comprise a storage means, such as a ROM memory, a CD-ROM or a microelectronic circuit type ROM memory, or a magnetic recording means or a hard disk.

[0029] Furthermore, this recording medium may also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other means. The computer program according to the present invention may in particular be downloaded from an Internet-type network.

[0030] Alternatively, the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to perform or to be used in performing the method in question. Brief description of the figures

[0031] Other characteristics and advantages of the present invention will emerge from the description of the particular and non-limiting exemplary embodiments of the present invention below, with reference to the attached figures 1 to 6, in which:

[0032] [Fig.l] schematically illustrates a part of the passenger compartment of a vehicle, according to a particular exemplary embodiment of the present invention;

[0033] [Fig.2] schematically illustrates a display device of the vehicle of [Fig.l], according to a first particular and non-limiting example of embodiment of the present invention;

[0034] [Fig.3] schematically illustrates the display device of the vehicle of [Fig.l], according to a second particular and non-limiting example of embodiment of the present invention;

[0035] [Fig.4] schematically illustrates the display device of the vehicle of [Fig.l], according to a third particular and non-limiting embodiment of the present invention;

[0036] [Fig.5] illustrates a device configured to control a display system of the vehicle of [Fig.l], according to a particular and non-limiting exemplary embodiment of the present invention.

[0037] [Fig.6] illustrates a flowchart of the different stages of a control process of a vehicle display system of [Fig.l], according to a particular and non-limiting exemplary embodiment of the present invention.

[0038] Description of the examples of embodiment

[0039] A method and a device for controlling a display system of a vehicle will now be described in the following with joint reference to Figures 1 to 6. The same elements are identified with the same reference signs throughout the description which follows.

[0040] According to a particular and non-limiting example of embodiment of the present invention, the control of a display system of a vehicle is for example implemented by one or more computers of the vehicle. The display system comprises a set of display screens, which set comprises one or more display screens. For this purpose, the method comprises the control of the display of a first graphic object (for example an icon or a signaling indicator) representative of a maximum speed authorized on a portion of road on which the vehicle is traveling.Such a maximum authorized speed is for example determined by a speed limit indication system, called SLI system (from the English "Speed ​​Limitation Indication" or in French "Indication of the speed limit") of the vehicle, for example from data obtained from one or more cameras of the vehicle having in their field of vision the environment or the scene located in front of the vehicle. This first graphic object is for example included in a determined content of a human-machine interface, called HMI, associated with the SLI system, which content is displayed on at least one display screen of the set of screens. vehicle display (for example on the screen corresponding to the dashboard and / or on a transparent blade of a head-up display system). Activation data from an RDL system of the vehicle representative of activation of the differential lock of the vehicle are received, for example via a data bus from a computer controlling the RDL system. The reception of this activation data from the RDL system triggers for example the display control of a second graphic object (for example an icon or a signal lamp) which is representative of the activation of the differential lock and of a threshold speed associated with the differential lock. This threshold value corresponds for example to the maximum speed recommended when the differential lock is implemented.This second graphical object is advantageously also included in the determined content of the HMI associated with the SLI system, and is thus displayed on the at least one display screen like the first graphical object.

[0041] Such a method makes it possible to control the speed of the vehicle according to the regulatory speed limit and the recommended maximum speed associated with the activation of the differential lock where applicable, this information being displayed in the same content on one (or more) same screen, which facilitates access to the information.

[0042] [Fig. 1] schematically illustrates a part of the passenger compartment of a vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention.

[0043] The vehicle 10 corresponds for example to a vehicle with a thermal engine, with electric motor(s) or even a hybrid vehicle with a thermal engine and one or more electric motors. The vehicle 10 thus corresponds for example to a land vehicle comprising a passenger compartment or at least equipped with a display screen, for example an automobile, a truck, a bus, a motorcycle.

[0044] The vehicle 10 advantageously incorporates a differential locking system, also called an RDL system (from the English “Rear Differential Lock” or in French “Blockage du différer arrière”). Such a system is for example controlled by a computer and comprises a mechanical system configured to “lock” the two wheels mounted on the same axle together as if they were connected by a common shaft. The differential lock makes it possible to ensure that the two wheels associated with the same axle rotate at the same speed. The differential locking system is for example installed on the front axle, on the rear axle or on the front and rear axles (for example for vehicles with all-wheel drive).

[0045] A determined speed value, called threshold speed, is advantageously associated with such a differential locking system. Such a threshold value corresponds to the maximum speed value recommended for the vehicle when the differential locking system is activated, i.e. when the differential is locked and the two wheels associated with the same axle (front and / or rear) turn at the same speed. The threshold value is, for example, 50 km / h. In other examples, the threshold value is 40 or 60 km / h.

[0046] Activation of the differential lock (corresponding to the transition to the activated state of the differential lock system) is for example obtained by actuating a physical control button (arranged in the dashboard 11 of the vehicle 10, on a control lever on the steering wheel or on a central console of the vehicle 10 for example). According to another example, activation of the differential lock is obtained by tactile pressure on a virtual button (an icon or any other graphic object) displayed for example on the touch screen 13, such a button belonging to a button of a page of the on-board HMI of the vehicle 10.

[0047] The vehicle 10 also advantageously incorporates an SLI system (from the English “Speed ​​Limitation Indication” or in French “Indication of the speed limitation”) corresponding to a system configured to determine the regulatory speed which applies on the portion of road taken by the vehicle 10. The regulatory speed corresponds for example to the maximum speed authorized on this portion of road or to the recommended speed.

[0048] The SLI system is thus configured to detect or warn the driver when the vehicle 10 is subject to a speed limit or enters a limited speed zone, or when different speed limits may apply depending on the context (type of vehicle, time, night, rain, roadworks, etc.).

[0049] To determine this regulatory speed and deduce a speed instruction therefrom, the SLI system conventionally uses information concerning the road and / or the road environment. For this purpose, the SLI system most often comprises at least one front camera on board the vehicle 10, this on-board camera having in its field of vision the road in front of the vehicle 10.

[0050] The SLI system further comprises image processing means configured to recognize road signs (corresponding for example to a traffic sign detection system) from the image data received from the camera, the regulatory speed applicable on the portion of road taken being determined from the recognized sign(s).

[0051] According to an alternative embodiment, the vehicle 10 also has one or more of the following systems: - an ISA system (from the English “Intelligent Speed ​​Adaptation” or in French “intelligent speed adaptation”); and / or - a cruise control system, for example an adaptive cruise control system, known as an ACC system (from the English “Adaptive Cruise Control”); and / or - a speed limitation system, also called a speed limiter.

[0052] The vehicle 10 also advantageously carries a display system comprising one or more display screens, for example: - a screen 13 with a touch interface and a computer configured to control the display of content(s) of a graphical MMI on the touch screen 13. The computer corresponds for example to the computer of the infotainment system, called the IVI (In-Vehicle Infotainment) computer of the vehicle 10. The connection between the computer and the head-up display device corresponds for example to a connection of the LVDS (Low Voltage Differential Signaling) type; and / or - a display screen 12 corresponding for example to a transparent or semi-transparent blade 12, for example arranged on top of the dashboard 11 in front of the windshield of the electric vehicle 10. The transparent blade 12 is for example arranged behind the steering wheel 15, according to the point of view of a driver installed in the driver's seat 16, in such a way that the driver sees the content displayed or projected on the transparent blade 12 when the driver is driving the electric vehicle 10. The transparent blade 12 thus corresponds to an element of a device or system called a head-up display. Such a display system comprises for example one or more projectors integrated for example in the dashboard 11.Such a system for projecting images or graphic content corresponds, for example, to a so-called augmented reality system, called AR (from the English "Augmented Reality"), for example a Head-Up Display system, called VTH or HUD (from the English "Head Up Display" or in French "Display Head High"), which allows the incrustation of virtual objects in the driver's field of vision by projecting the images onto the blade 12, so as to superimpose the virtual objects of the projected images onto the real road scene. The projection of the images of the graphic object is, for example, controlled by one or more computers of the on-board system of the vehicle 10, for example by the IVI computer; and / or. - a display screen 14 corresponding to the dashboard of the vehicle 10, such a screen 14 being arranged in the dashboard 11 behind the steering wheel 15, according to the point of view of the driver installed in the driver's seat 16, in such a way that the driver sees the content displayed on this screen 14 through the steering wheel 15.

[0053] According to a particular embodiment, the display system does not include the dashboard screen 14, all or part of the information usually displayed on the dashboard screen 14 being displayed on the transparent blade 12 and / or on the screen 13. Such an embodiment is for example provided or configured to reduce the number of screens present in the vehicle 10.

[0054] The systems on board the vehicle 10 are each controlled by one or several computers, including the IVI computer. These computers form, for example, a multiplexed architecture for the implementation of various services useful for the proper functioning of the vehicle and for assisting the driver and / or passengers of the vehicle in controlling the vehicle 10 via the control of the system(s) embedded in the vehicle 10. The computers communicate and exchange data with each other via one or more computer buses, for example a communication bus of the CAN (Controller Area Network) type, CAN FD (Controller Area Network Flexible Data-Rate), FlexRay (according to the ISO 17458 standard), LIN (Local Interconnect Network) or Ethernet (according to the ISO / IEC 802-3 standard).

[0055] A process for controlling the display system of the vehicle 10 is advantageously implemented by the vehicle 10, for example by one or more processors of one or more computers of the on-board system of the vehicle 10, for example by the IVI computer.

[0056] In a first operation, the display of a first graphic object representative of a maximum authorized or recommended speed on a portion of road on which the vehicle 10 is traveling is controlled in such a way that this first graphic object is displayed on one or more screens of the display system of the vehicle 10 (for example the screen 14 and / or the blade 12) in a determined content of a human-machine interface, called HMI, which content is displayed on this or these screens 12, 14.

[0057] The control of the display of the first graphic object is for example triggered by the activation of the SLI system and by the automatic detection and recognition of a traffic sign indicating a speed limit. The first graphic object evolves for example as the signs indicating a speed limit are detected / recognized as the vehicle 10 moves in its road environment.

[0058] The first graphical object is for example displayed with other information included in the content of the HMI provided for the SLI system.

[0059] The set of information includes for example the instantaneous speed of the vehicle 10 when the latter is in a rolling or circulation phase, that is to say in motion, driven by the engine of the vehicle 10.

[0060] The first graphic object corresponds, for example, to a graphic representation of a traffic sign indicating a speed limit, with in its center the value of the maximum authorized or recommended speed associated with the sign.

[0061] The first graphical object 223 is for example illustrated in [Fig.2]. [Fig.2] illustrates an example of displaying the first graphical object 223 in a part de- completed 22 of screen 14 (and / or screen 12).

[0062] According to a particular example, the surface of the screen 14 is for example divided into 3 display parts, with for example a first part 21 for displaying a representation of a speed indicator, a second part 22 assigned to displaying the content of the HMI associated with the SLI system and a third part 23 for displaying a representation of a rev counter. Of course, the surface of the screen can be divided into a number of parts other than 3, for example into 1, 2, 4 or 5 parts.

[0063] According to the particular example of [Fig.2], other information is displayed in the content of the HMI displayed on the part 22 of the screen, namely a graphic object 221 representing the current speed of the vehicle 10 (in the form of a numerical value) and a graphic object 222 representing the activated state of an ACC type speed regulation system.

[0064] Other information is for example displayed in the other parts 21, 23 of the screen, such as for example information associated with the multimedia system of the vehicle 10 and / or information associated with the navigation system of the vehicle 10.

[0065] In a second operation, so-called RDL system activation data representative of activation of the differential lock of the vehicle are received. These activation data are for example received following an action by the driver, for example following pressing a control button to activate the differential lock. These activation data are for example transmitted by the computer controlling the RDL system to the IVI computer.

[0066] According to an alternative embodiment, the activation data are transmitted by the computer controlling the RDL system when the differential lock is implemented and activated. Such implementation is for example confirmed upon receipt, by the computer controlling the RDL system, of data from one or more sensors associated with the differential lock system controlling the effective implementation of the lock.

[0067] In a third operation, the IVI computer controls the display of a second graphic object representative of both the activation of the differential lock and the threshold speed associated with the differential lock, such display control being triggered by the reception of the activation data from the RDL system.

[0068] The second graphical object is advantageously displayed with the content of the HMI dedicated to the SLI system, as illustrated in Figures 3 and 4.

[0069] [Fig. 3] illustrates the display of the second graphic object 321 in an area of ​​the part 22 of the screen 14 (and / or of the blade 12) adjacent to the display area of ​​the first graphic object 223. According to another exemplary embodiment, the second graphic object 321 is displayed in an area not adjacent to that of the first graphic object 321.

[0070] The second graphic object 321 thus indicates that the differential lock is activated via, for example, a first icon (representing, for example, a transmission system of the vehicle 10, the acronym “RDL” or any other acronym) and a second icon indicating the threshold speed (for example, in the form of a speed limit sign with the value of the threshold speed in its center). According to this example, the second graphic object 321 is composed of a graphic assembly (or nesting) of several objects nested within one another. According to another example, the objects forming the second graphic object 321 are distinct and displayed in relation to one another in a non-assembled or non-nested manner.

[0071] According to the example of [Fig.3], the second graphic object is displayed according to a first state.

[0072] According to a particular embodiment of the process, the process further comprises an operation of comparing the current speed of the vehicle 10 (received for example from an odometer on board the vehicle 10) with the value of the threshold speed (for example equal to 50 km / h).

[0073] According to this particular embodiment, the control of the display of the second graphic object 321 is furthermore a function of the result of this comparison.

[0074] Thus, when the result of the comparison indicates that the current speed of the vehicle 10 is less than (or equal to) the threshold speed, then the second graphic object is displayed according to a first representation 321 associated with a first state. For example, the second graphic object 321 is displayed in a fixed and continuous manner (without flashing) when it is in this first state.

[0075] When the result of the comparison indicates that the current speed of the vehicle 10 is greater than the threshold speed, then the second graphic object is displayed according to a second representation 421 illustrated in [Fig. 4], which second representation is associated with a second state. For example, the second graphic object in its second representation 421 is displayed so as to flash (or with a flashing light halo surrounding the second graphic object 421) to alert the driver and draw his attention to the fact that the vehicle 10 is traveling at a speed greater than the recommended maximum speed when the differential lock is activated.

[0076] According to a variant, the second representation associated with the second state corresponds to a display of the second graphic object in a color different from that of the first state, or with a symbol of the “panel with exclamation mark” type added to the objects forming the second graphic object 421.

[0077] The second graphic object 421 in its second representation associated with the second state is thus representative of an alert for exceeding the threshold speed intended for the driver of the vehicle 10 and / or its passengers.

[0078] The second graphic object 421 in its second representation associated with the second state takes for example the place of the second graphic object 321 in its first representation associated with the first state in the content of the HMI dedicated to the SLI system and displayed in the part 22 of the screen 14 (and / or of the blade 12).

[0079] According to another particular embodiment, a parameter of the speed regulation system and / or of the speed limitation system (depending on the system activated by the driver, for example indicated by the graphic object 222) corresponding to a set speed (or maximum set speed in the case of the speed limitation system) automatically takes as its value the value of the threshold speed associated with the RDL system when the differential lock is activated.

[0080] According to an alternative embodiment, when the set speed corresponds to the parameter of a speed regulation system, then the value assigned to this parameter corresponds to the threshold speed value reduced by a determined value (for example reduced by 5 or 10 km / h). When the set speed corresponds to the parameter of a speed limiter, then the value assigned to this parameter corresponds to the threshold speed value.

[0081] The assignment of the threshold speed to the set speed parameter is for example only implemented when the result of the comparison indicates that the value of the threshold speed is lower than the maximum speed authorized on the portion of road on which the vehicle 10 is traveling, which maximum authorized speed is indicated by the first graphic object 223. In the opposite case, that is to say when the result of the comparison indicates that the value of the threshold speed is higher than the maximum authorized speed, then the set speed keeps as its value that set before the activation of the RDL system or set by the driver of the vehicle 10.

[0082] According to this other embodiment, the speed regulation system and / or the speed limitation system is controlled as a function of this set speed corresponding to the threshold speed.

[0083] Such an embodiment further comprises, for example, the transmission of a request by the computer controlling the SLI system to the computer controlling the speed regulation or limitation system to modify the value of the set speed.

[0084] Such an embodiment makes it possible to increase the safety of the vehicle by automatically adjusting the speed of the vehicle (or its maximum speed permitted by the speed limiter) to the maximum speed recommended when the differential is locked, or to a lower value.

[0085] [Fig. 5] schematically illustrates a device 5 configured for controlling a display system of a vehicle, for example the display system of the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. device 7 corresponds for example to a device on board the vehicle 10, for example a computer.

[0086] According to other examples, the device 5 corresponds for example to the computer controlling the SLI system, the computer controlling the ISA system or any other system for controlling the speed of the vehicle 10.

[0087] The device 5 is for example configured for the implementation of the operations described with regard to figures 1 to 4 and / or the steps of the method described with regard to [Fig.6]. Examples of such a device 5 include, but are not limited to, on-board electronic equipment such as an on-board computer of a vehicle, an electronic calculator such as an ECU (“Electronic Control Unit”), a smartphone, a tablet, a laptop. The elements of the device 5, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and / or in discrete components. The device 5 can be produced in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

[0088] The device 5 comprises one (or more) processor(s) 50 configured to execute instructions for carrying out the steps of the method and / or for executing the instructions of the software(s) embedded in the device 5. The processor 50 may include integrated memory, an input / output interface, and various circuits known to those skilled in the art. The device 5 further comprises at least one memory 51 corresponding for example to a volatile and / or non-volatile memory and / or comprises a memory storage device which may comprise volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[0089] The computer code of the embedded software(s) comprising the instructions to be loaded and executed by the processor is for example stored in the memory 51.

[0090] According to various particular and non-limiting embodiments, the device 5 is coupled in communication with other similar devices or systems and / or with communication devices, for example a TCU (from the English “Telematic Control Unit” or in French “Telematic Control Unit”), for example via a communication bus or through dedicated input / output ports.

[0091] According to a particular and non-limiting exemplary embodiment, the device 5 comprises a block 52 of interface elements for communicating with external devices. The interface elements of the block 52 comprise one or more of the following interfaces: - RF radio frequency interface, for example Wi-Fi® type (according to IEEE 802.11), by example in the 2.4 or 5 GHz frequency bands, or Bluetooth® type (according to IEEE 802.15.1), in the 2.4 GHz frequency band, or Sigfox type using UBN radio technology (Ultra Narrow Band), or LoRa in the 868 MHz frequency band, LTE (Long-Term Evolution), LTE-Advanced; - USB interface (from the English “Universal Serial Bus” or “Universal Serial Bus” in French); - HDMI interface (from the English “High Definition Multimedia Interface” or “High Definition Multimedia Interface” in French); - LIN interface (from the English “Local Interconnect Network”).

[0092] According to another particular and non-limiting exemplary embodiment, the device 5 comprises a communication interface 53 which makes it possible to establish communication with other devices (such as other computers of the on-board system) via a communication channel 530. The communication interface 53 corresponds for example to a transmitter configured to transmit and receive information and / or data via the communication channel 530. The communication interface 53 corresponds for example to a wired network of the CAN (from the English “Controller Area Network” or in French “Réseau de contrôles”) type, CAN FD (from the English “Controller Area Network Flexible Data-Rate” or in French “Réseau de contrôles à débit de données flexible”), FlexRay (standardized by the ISO 17458 standard) or Ethernet (standardized by the ISO / IEC 802-3 standard).

[0093] According to a particular and non-limiting exemplary embodiment, the device 5 can provide output signals to one or more external devices, such as a display screen 540, touch-sensitive or not, one or more speakers 550 and / or other peripherals 560 (projection system) via output interfaces 54, 55 and 56 respectively. According to a variant, one or other of the external devices is integrated into the device 5.

[0094] [Fig. 6] illustrates a flowchart of the different steps of a method for controlling a display system of a vehicle, for example the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. The method is for example implemented by a device on board the vehicle 10 or by the device 5 of [Fig. 5].

[0095] In a first step 61, the display of a first graphic object representative of a maximum authorized speed on a portion of road on which the vehicle (10) is traveling is controlled to be included in a determined content of a human-machine interface, called HMI, associated with the SLI system and displayed on at least one screen display of the vehicle's display screen assembly.

[0096] In a second step 62, activation data of the RDL system of the vehicle representative of activation of the differential lock of the vehicle are received.

[0097] In a third step 63, the display of a second graphical object representative of activation of the differential lock and of a threshold speed associated with the differential lock is controlled to be included in the determined content associated with the SLI system displayed on the at least one display screen following the reception of the activation data from the RDL system.

[0098] According to a variant, the variants and examples of the operations described in relation to one of figures 1 to 4 apply to the steps of the method of [Fig.6].

[0099] Of course, the present invention is not limited to the exemplary embodiments described above but extends to a method for displaying a determined content of an HMI which would include secondary steps without thereby departing from the scope of the present invention. The same would apply to a device configured for implementing such a method.

[0100] The present invention also relates to a vehicle, for example an automobile or more generally an autonomous land-based motor vehicle, comprising the device 5 of [Fig.5] or a display system comprising the device 5 of [Fig.5] connected in communication to one or more screens on board the vehicle.

Claims

Claims

1. Method for controlling a display system of a vehicle (10), said display system comprising a set of display screens (12, 13, 14), said vehicle (10) carrying a speed limit indication system, called SLI system, and a differential locking system, called RDL system, said SLI system being in a so-called activated state, said method comprising the following steps: - controlling (61) the display of a first graphic object (223) representative of a maximum speed authorized on a portion of road on which said vehicle (10) is traveling in a determined content of a human-machine interface, called HMI, associated with said SLI system and displayed on at least one display screen (12, 14) of said set of display screens; - receiving (62) activation data from said RDL system representative of activation of the differential lock of said vehicle (10);- control (63) of display of a second graphic object (321, 421) representative of activation of said differential lock and of a threshold speed associated with said differential lock in said determined content associated with said SLI system displayed on said at least one display screen (12, 14) following said reception (62) of said activation data of said RDL system.;

2. The method of claim 1, wherein said first graphical object (223) is displayed in a first area of said determined content, said second graphical object (321, 421) is displayed in a second area of said determined content adjacent to said first area.

3. Method according to claim 1 or 2, further comprising the following steps: - receiving speed data representative of a current speed of said vehicle (10); - comparing said current speed with said threshold speed, said display control of said second graphical object (321, 421) being a function of a result of said comparison.

4. Method according to claim 3, for which: - when said current speed is lower than said threshold speed, said second graphic object (321) is displayed according to a first state; and - when said current speed is higher than said threshold speed, said second graphic object (421) is displayed according to a second state representative of an alert for exceeding said threshold speed.

5. The method of claim 4, wherein said first state corresponds to a fixed display state of said second graphical object (321) and said second state corresponds to a flashing display state of said second graphical object (421).

6. Method according to one of claims 1 to 5, further comprising the following steps: - comparing said threshold speed with said maximum authorized speed; - assigning said threshold speed to a set speed of a speed control system and / or a speed limitation system of said vehicle (10) when said threshold speed is lower than said maximum authorized speed; - controlling said speed control system and / or said speed limitation system as a function of said set speed.

7. Method according to one of claims 1 to 6, for which said at least one display screen corresponds to: - a dashboard (14) of said vehicle (10) located behind a steering wheel (15) of said vehicle from a point of view corresponding to a driver's seat (16) of said vehicle (10); and / or - a display device (12) of a Head-Up Vision system of said vehicle (10).

8. Computer program comprising instructions for implementing the method according to any one of the preceding claims, when these instructions are executed by a processor.

9. Device (5) for controlling a display system of a vehicle (10), said device (5) comprising a memory (51) associated with at least one processor (50) configured for implementing the steps of the method according to any one of claims 1 to 7.

10. Vehicle (10) comprising the device (5) according to claim 9.

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