Vehicle control system

Abstract

Vehicle Control System. The present invention relates to a vehicle function control system (10) comprising a touchscreen (12) and a rotary knob (14). The rotary knob (14) includes a translucent outer ring (20) rotatably mounted relative to an inner ring (18). The control system (10) also includes a dynamic backlighting system (16) for the outer ring (20) configured so that, during rotation by a user, the outer ring (20) displays an illuminated region (30) that moves relative to the inner ring (18) following the rotation of the outer ring (20). The dynamic backlighting system (16) includes a light source attached to the inner ring (18), each light source being capable of switching from an on configuration, in which a photonic component emits light, to an off configuration, in which the photonic component emits no light.Figure for the abbreviation: Figure 1.

Description

Title of the invention: Vehicle control system

[0001] The present invention relates to a control system for at least one function of a vehicle, in particular a motor vehicle.

[0002] Such a control system is intended to allow the user to interact with a display device, such as a touch screen, to display information useful to the driver and / or passengers such as navigation information, pictograms, and / or to control certain vehicle functions.

[0003] Such a known control system further includes a rotary button fixed to a touch screen allowing the selection of a parameter from among a plurality of parameters, such as a radio station, and / or the control of the intensity of a parameter, such as the sound volume in the passenger compartment or the ventilation, by capacitive or optical detection.

[0004] In order to provide an intuitive and attractive user interface, it is known to use the light produced by the touch screen to backlight the rotary button.

[0005] However, such a system does not give complete satisfaction.

[0006] Indeed, such a system is complex to implement, particularly with regard to the interaction between the touchscreen and the rotary knob. The rotational movements of the rotary knob are, in fact, difficult to determine precisely in order to provide high-quality backlighting.

[0007] In addition, the backlighting of the rotary button is made more complex because the available space inside the latter is small and no wired connection is possible between the touch screen and the inside of the rotary button.

[0008] One object of the invention is to provide a control system comprising a rotary button attached to a touch screen, the use of which by the user is made intuitive in a simpler way to implement and more reliable.

[0009] To this end, the invention relates to a control system for at least one function of a vehicle, the control system comprising a touchscreen and a rotary knob, the rotary knob comprising an inner ring fixed to the touchscreen and an outer ring mounted to rotate relative to the inner ring, the outer ring comprising a base body and a conductive index, the base body of the outer ring being translucent and suitable for diffusing light, the conductive index being integral with the base body and in contact with the touchscreen; the control system also comprising a dynamic backlighting system for the outer ring configured so that, during rotation of the outer ring by a user relative to the inner ring, the translucent base body of the outer ring has an illuminated region moving relative to the inner ring. depending on the rotation of the outer ring relative to the inner ring, the dynamic backlighting system comprising at least one light source fixed to the inner ring, each light source comprising at least one photonic component and a receiver, the receiver being adapted to receive an electric field external to the rotary knob and to power said at least one photonic component, each light source being adapted to switch from an on configuration, in which said at least one photonic component emits light when powered by the receiver, to an off configuration, in which said at least one photonic component does not emit any light.

[0010] According to different embodiments, the control system comprises one or more of the following features, taken individually or in all technically possible combinations:

[0011] - the dynamic backlighting system comprises a processing unit and a transmitter, preferably integrated into the touch screen, the transmitter being suitable for emitting an external electric field to the rotary knob, preferably an alternating electric field, the processing unit being suitable for controlling the transmitter;

[0012] - the transmitter and receiver are also configured to exchange data for to vary between the off and on configurations;

[0013] - the dynamic backlighting system further includes a system power supply for the transmitter, preferably integrated into the touch screen;

[0014] - the dynamic backlighting system processing unit is configured for to control the transition, for said at least one light source, from the off configuration to the on configuration, when a user touches the rotary button;

[0015] - the dynamic backlighting system comprises a plurality of light sources miners fixed to the inner ring and in which the inner ring includes a base body delimiting, for each light source, a window arranged such that the light from the light source is diffused radially outwards from the rotary knob, each photonic component preferably being arranged opposite the window;

[0016] - the dynamic backlighting system processing unit is configured for to control the switching of the light source(s) from the off configuration to the on configuration, when a user touches the rotary knob, the backlighting system further comprising a blackout ring, the blackout ring being fixed to the outer ring and having an opaque annular base body and a light-transmitting area, said lit area of ​​the translucent base body of the outer ring corresponding to the area of ​​the translucent base body opposite said light-transmitting area;

[0017] - the blackout ring is arranged so that the light-transmitting area leaves pass the light from only one of the windows of the inner ring;

[0018] - the processing unit is configured to:

[0019] - acquire the spatial coordinates of the driving index on the touch screen;

[0020] - to control the transmitter to transmit said at least one light source from one configuration to the other depending on the spatial coordinates acquired from the conductive index, said lit region of the translucent base body of the outer ring corresponding to the region of the translucent base body opposite the or each light source in lit configuration.

[0021] - the dynamic backlighting system comprises a plurality of light sources miners and in which the processing unit is also configured for:

[0022] - to determine, from the acquired spatial coordinates, an angular sector ignition and an angular sector of extinction and,

[0023] - control the transmitter so that each light source located in the sector angular ignition either in the lit configuration and for each light source disposed in the angular extinction sector or in the off configuration, said lit region of the translucent base body of the outer ring corresponding to the region of the translucent base body opposite the angular ignition sector.

[0024] The invention will become clearer upon reading the following description, given solely by way of non-limiting example, and made with reference to the drawings in which:

[0025] [Fig-1] [Fig.1] is a perspective view of a rotary knob of the system control according to the invention having an illuminated region,

[0026] [Fig.2] [Fig.2] is a functional diagram of a control system according to the invention,

[0027] [Fig.3] [Fig.3] is a schematic sectional view of a rotary knob in the figure according to one embodiment.

[0028] Figures 1 and 2 illustrate a control system 10 according to a first embodiment of at least one function of a vehicle according to a first embodiment.

[0029] The vehicle (not shown) is for example a motor vehicle.

[0030] The control system 10 comprises a touch screen 12, a rotary knob 14 and a dynamic backlighting system 16.

[0031] The control system 10 includes, for example, a vehicle trim element, such as a dashboard cover, a control panel, a center console located between two front seats of the vehicle, or other.

[0032] The 12-inch touchscreen is configured to display graphic information useful to the driver and / or passengers, such as navigation information, pic- tograms, and / or to control certain vehicle functions.

[0033] The 12-inch touchscreen is preferably integrated into the vehicle trim element.

[0034] The 12-inch touchscreen presents a user surface.

[0035] The user surface is accessible to a user's touch.

[0036] The user surface is, for example, flat.

[0037] The rotary button 14 includes an inner ring 18 fixed to the touch screen 12 and an outer ring 20.

[0038] The outer ring 20 is mounted to rotate relative to the inner ring 18.

[0039] To do this, the rotary knob 14 includes, for example, a ball bearing system, or any other bearing system, suitable for ensuring the rotation of the outer ring 20 relative to the inner ring 18.

[0040] In the illustrated example, the inner ring 18 and the outer ring 20 are coaxial about a central axis. The outer ring 20 is then free to rotate relative to the inner ring 18 about the central axis.

[0041] The central axis is perpendicular to the touch screen 12, in particular perpendicular to the user surface of the touch screen 12.

[0042] The central axis is fixed relative to the touch screen 12 during any rotation of the outer ring around the central axis.

[0043] The inner ring 18 comprises a base body 22.

[0044] The base body 22 preferably has a circular ring shape.

[0045] The basic body 22 has a thickness, taken along the central axis from the user area of ​​the 12-inch touchscreen, greater than 1.0 mm.

[0046] In particular, the central axis is an axis of revolution of the basic body 22.

[0047] Preferably, the basic body 22 delimits a plurality of windows 24.

[0048] The windows 24 are for example formed by openings in the base body 22.

[0049] The windows 24 are preferably distributed regularly along the circumference of the inner ring 18.

[0050] The windows 24 are all preferably arranged radially at equidistant points from the central axis.

[0051] The windows 24 are preferably of the same length, taken orthoradially to the central axis.

[0052] Here and thereafter, any reference to the terms "radial" and "orthoradial" should be understood in relation to the central axis.

[0053] The windows are preferably in a number greater than or equal to 2 and for example less than or equal to 50, advantageously less than or equal to 10.

[0054] The basic body 22 is opaque.

[0055] By "opaque" it is understood that the base 22 substance is suitable for allowing up to 1% of visible light transmission.

[0056] The basic body 22 is for example made of acrylonitrile butadiene styrene (ABS).

[0057] The base body 22 is attached to the touch screen 12, for example by gluing.

[0058] The basic body 22 is for example made of electrically insulating material.

[0059] Preferably, the base body 22 defines a through opening 21. Thus, The through-hole 21 reveals the user surface. This allows information to be displayed on the touchscreen 12 at the level of the through-hole 21, visible to the user.

[0060] The outer ring 20 comprises a base body 26 and a conducting index 28.

[0061] The base body 26 of the outer ring 20 is translucent.

[0062] The term "translucent" means that the basic body 26 is capable of allowing more than 5% transmission of visible light.

[0063] The basic body 26 is suitable for diffusing light.

[0064] The term "proper to diffuse light" means that the base body 26 has a textured surface and a certain amount of additives in order to disperse light and thus give diffusive properties.

[0065] The base body 26 preferably has a circular ring shape.

[0066] The base body 26 of the outer ring 20 is reported against the circumference of the base body 22 of the inner ring.

[0067] In other words, the base body 26 of the outer ring 20 extends radially outside the base body 22 of the inner ring 18.

[0068] In particular, at least one plane parallel to the user surface of the touch screen 12 intersects both the base body 22 of the inner ring 18 and the base body 26 of the outer ring 20.

[0069] The base body 26 has an outer diameter greater than the outer diameter presented by the base body 22 of the inner ring 18.

[0070] The base body 26 of the outer ring 20 has, for example, a thickness, taken along the central axis from the user surface of the touch screen 12, that is less than the thickness of the base body 22 of the inner ring 18.

[0071] The base body 26 radially surrounds the inner ring 18, in particular the plurality of windows 24.

[0072] The basic body 26 is for example made of polymethyl methacrylate (PMMA).

[0073] The conducting index 28 is integral with the base body 26.

[0074] The conductive index 28 is disposed under the base body 26 and is in direct contact with the 12-inch touchscreen or in contact with the 22-inch base body.

[0075] The conductive index 28 is made of electrically conductive material, such as metal.

[0076] The dynamic backlighting system 16 according to the invention is a dynamic backlighting system for the outer ring 20 of the rotary knob 14.

[0077] According to the invention, the dynamic backlighting system 16 is configured so that, during the rotation by a user of the outer ring 20 relative to the inner ring 18, the translucent base body 26 of the outer ring 20 has an illuminated region 30 moving relative to the inner ring 18 following the rotation of the outer ring 20 relative to the inner ring 18.

[0078] The lit region 30, shown in [Fig. 1], is visible to the user from outside the rotary knob 14.

[0079] The dynamic backlighting system 16 comprises a plurality of light sources 34.

[0080] Preferably, the dynamic backlighting system 16 also includes a processing unit 36 ​​and an emitter 38.

[0081] The dynamic backlighting system 16 includes, for example, a power supply system 40.

[0082] The dynamic backlighting system 16 also includes, for example, a user contact sensor (not shown).

[0083] The user contact sensor is configured to detect contact of the rotary button 14 by the user.

[0084] The user contact sensor is preferably capacitive.

[0085] The user contact sensor is then configured to detect a change in capacity when a user touches the rotary button 14.

[0086] The light sources 34 are fixed to the inner ring 18, such that the light from each light source 34 is diffused radially outwards from the rotary knob through one of the windows 24.

[0087] Preferably, the number of light sources 34 is identical to the number of windows 24 of the inner ring 18.

[0088] Each light source 34 comprises at least one photonic component 42 and a receiver 44.

[0089] The receiver 44 is suitable for receiving an external electric field to the rotary knob 14 and for supplying the photonic component 42 with electricity.

[0090] Each photonic component 42 is configured to emit light radially, with respect to the central axis.

[0091] Each light source 34 is capable of switching from an on configuration, in which the photonic component 42 emits light when powered by the receiver 44, to an off configuration, in which the photonic component 42 emits no light, and vice versa.

[0092] Each photonic component 42 is arranged above the user surface of the 12-inch touchscreen.

[0093] Each photonic component 42 is arranged opposite one of the windows 24 through which the emitted light is diffused.

[0094] Each photonic component 42 is arranged radially closer to the central axis than the windows 24.

[0095] Each photonic component 42 is powered solely by the associated receiver 44.

[0096] None of the photonic components 42 have a wired connection with the outside of the rotary knob 14.

[0097] In particular, no power source is incorporated in the rotary knob 14.

[0098] The photonic components 42 are for example lamps, bulbs and preferably LEDs (from the English Light Emitting Diodes).

[0099] The power supply system 40 is configured to provide the electrical power necessary for the transmitter 38 to operate.

[0100] The power supply system 40 is integrated into the touch screen 12 and configured to also power all the systems of the touch screen 12.

[0101] The electrical power supply system 40 derives its electrical power in particular from the vehicle's battery.

[0102] The transmitter 38 is suitable for emitting an external electric field to the rotary knob 14, preferably an alternating electric field, and for exchanging data with the receiver 44 of each light source 34.

[0103] The data include, for example, information representative of the current configuration of the light source 34 associated with each receiver 44.

[0104] The transmitter 38 is preferably integrated into the touch screen 12.

[0105] The processing unit 36 ​​includes, for example, a computer processing device operationally connected to a computer memory, for example, a digital signal processor (DSP), a microcontroller, a field-programmable gate array (FPGA) and / or a dedicated integrated circuit (ASIC) capable of performing various data processing operations and functions.

[0106] The computer processing device includes, for example, a single processor. Alternatively, the computer processing device includes several processors, which are located in the same geographical area, or are, at least partially, located in different geographical areas and are then able to communicate with each other.

[0107] The term "memory" means any volatile or non-volatile computer memory appropriate to the subject matter herein, such as random access memory (RAM), read-only memory (ROM), or other electronic, optical, magnetic, or any other computer-readable storage medium on which the data and control functions as described herein are stored.

[0108] Consequently, memory is a tangible storage medium where data and control functions are stored in a non-transient form.

[0109] The processing unit 36 ​​is connected to the touch screen 12, the transmitter 38 and the user contact sensor.

[0110] The processing unit 36 ​​is integrated into the touch screen 12 and also ensures the operation of the touch screen 12. For this purpose, the processing unit 36 ​​includes means for processing graphic information, for example a graphics processor, an associated graphics memory for displaying information on the touch screen 12, and devices for receiving and processing touch interactions of the touch screen 12.

[0111] The processing unit 36 ​​is suitable for controlling the transmitter 38, to control the transition, for at least one of the light sources 34, from the off configuration to the on configuration, when a user touches the rotary button 14.

[0112] To do this, the user contact sensor is connected to the processing unit 36 ​​and is configured to transmit to it the information that a user touches the rotary button 14.

[0113] The processing unit 36 ​​is also preferably suitable for controlling the transmitter 38 to control the switching of all the light sources 34 to the off configuration, when the user no longer touches the rotary button 14.

[0114] Information concerning the conductive index 28 in contact with the touch screen 12 is received by the processing unit 36, in particular the processing unit 36 ​​is configured to acquire the spatial coordinates of the conductive index 28 on the touch screen 12.

[0115] The processing unit 36 ​​is thus configured to acquire the spatial coordinates of the conductive index 28 on the touch screen 12.

[0116] The spatial coordinates are two-dimensional along an x-axis and a y-axis, these two axes defining a plane coinciding with the user surface of the touch screen 12.

[0117] To do this, the processing unit stores spatial reference coordinates of the conductive index 28 defined for a reference position of the conductive index 28. The reference position is associated with a reference angular position of the outer ring 20 relative to the inner ring 18.

[0118] From the spatial coordinates of the conducting index 28 acquired and the reference spatial coordinates, the processing unit 36 ​​is configured to determine the current angular position of the outer ring 20 relative to the inner ring 18.

[0119] The processing unit 36 ​​is also configured to control, depending on the co spatial ordinates of the driver index 28, a vehicle function and / or a display on the touch screen 12.

[0120] For example, the processing unit 36 ​​is configured to control the selection of a parameter from among a plurality of parameters, such as a radio station; and / or to control the intensity of a parameter, such as a sound volume in the passenger compartment, a temperature in the passenger compartment, or the ventilation.

[0121] Preferably, the processing unit 36 ​​is configured to determine a direction of rotation of the driver index 28 and to control the function of the vehicle according to the determined direction of rotation.

[0122] For example, a rotational displacement in a first direction of rotation increases the intensity of the parameter and a rotational displacement in a second opposite direction decreases the intensity of the parameter.

[0123] In a first embodiment, the processing unit 36 ​​is configured to determine, as a function of the current determined angular position, an angular sector for ignition and an angular sector for extinction of the light sources.

[0124] The angular sectors of ignition and extinction are centered on the central axis and are taken parallel to the user surface.

[0125] The angular sectors of ignition and extinction are defined for example such that the conductive index 28 is disposed under the lit region 30.

[0126] The angular sector of extinction is preferably greater than the angular sector of ignition.

[0127] The angular sectors of ignition and extinction are advantageously complementary to each other.

[0128] The sum of the angular sectors of ignition and extinction preferably corresponds to 360°.

[0129] The processing unit 36 ​​is then configured to control the emitter 38 to switch the light sources 34 from one configuration to the other according to the spatial coordinates acquired from the conductive index 28.

[0130] More specifically, the processing unit 36 ​​is configured to control the emitter 38 so that each light source 34 disposed in the angular sector of ignition is in the on configuration and for each light source 34 disposed in the angular sector of extinction is in the off configuration.

[0131] The processing unit 36 ​​is then configured to control the emitter 38 to switch each light source 34 arranged in the angular sector of ignition which is previously in the off configuration to the on configuration and to switch each light source 34 arranged in the angular sector of extinction which is previously in the on configuration to the off configuration.

[0132] The illuminated region 30 of the base body 26 translucent of the outer ring 20 then corresponds to the region of the basic body 26 translucent opposite the or each light source 34 in lit configuration, that is to say opposite the angular sector of ignition.

[0133] The receivers 44 of each light source 34 of the angular ignition sector receive an external electric field from the rotary knob 14, enabling the photonic components 42 to emit light.

[0134] The receivers 44 of each light source 34 of the angular extinction sector do not receive an external electric field from the rotary knob 14, therefore the photonic components 42 do not emit light.

[0135] When the rotary knob 14 is moved by a user, the spatial coordinates of the conductive index 28 vary by rotation of the outer ring 20 relative to the inner ring 18, and the angular sectors of the on / off state are modified accordingly. The processing unit 36 ​​then commands the emitter 38 to change the configurations of the light sources 34, whose angular sectors have changed simultaneously with the rotation.

[0136] A method for controlling at least one function of a vehicle, according to a first embodiment, will now be described.

[0137] The method is suitable for implementation by the control system according to the first embodiment described above.

[0138] The method includes a step of contacting the rotary button 14 by a user and rotating the outer ring 20 relative to the inner ring 18.

[0139] The user contact sensor detects this contact and transfers the information that a user is touching the rotary button 14 to the processing unit 36.

[0140] The method includes acquiring the spatial coordinates of the conductive index 28 and controlling the emitter 38 to move the light sources 34 from one configuration to the other according to the spatial coordinates acquired from the conductive index 28.

[0141] More specifically, the method includes determining the angular sectors of ignition and extinction and controlling the emitter 38 so that each light source 34 disposed in the angular sector of ignition is in the on configuration and for each light source 34 disposed in the angular sector of extinction is in the off configuration.

[0142] Thus, only the photonic components 42 of each light source 34 located in the angular sector of ignition emit light.

[0143] The lit region 30 of the translucent base body 26 of the outer ring 20 then corresponds to the region of the translucent base body 26 opposite the angular sector of ignition.

[0144] The illuminated region 30 follows the rotation of the outer ring 20 relative to the ring interior 18.

[0145] The method also includes controlling, based on the spatial coordinates of the driver index 28, a vehicle function and / or a display on the touch screen 12.

[0146] A second embodiment of the control system 10 will now be described, with reference to [Fig.3]. Only the differences between the first and second embodiments are described below.

[0147] In the second embodiment, the processing unit 36 ​​is configured to control the switching of all light sources 34 from the off configuration to the on configuration, when a user touches the rotary button.

[0148] The light sources 34 then simultaneously switch from the off configuration to the on configuration.

[0149] In the second embodiment, the dynamic backlighting system 16 further includes an occulting ring 46, the occulting ring 46 being fixed to the outer ring 20.

[0150] The occulting ring 46 has an opaque annular base body 48 and at least one light-transmitting zone 50, preferably a single zone 50, such as an opening or a translucent region.

[0151] The light-transmitting zone 50 is arranged so that it only allows light to pass through from one of the windows 24 of the inner ring 18.

[0152] The light-transmitting zone 50 preferably has a length, taken orthoradially to the central axis, greater than or equal to the orthoradial length of each window 24.

[0153] The lit region 30 of the translucent base body 26 of the outer ring 20 then corresponds to the region of the translucent base body 26 opposite said light-transmitting zone 50.

[0154] The conductive index 28 is positioned at the level of the light-transmitting zone 50, and preferably is radially aligned with the latter.

[0155] A method for controlling at least one function of a vehicle, according to a second embodiment, will now be described.

[0156] The method is suitable for implementation by the control system according to the second embodiment described above.

[0157] The method includes a step of contacting the rotary button 14 by a user.

[0158] The user contact sensor detects this contact and transfers the information that a user is touching the rotary button 14 to the processing unit 36.

[0159] The method then includes the control of switching all the light sources 34 from the off configuration to the on configuration.

[0160] The method then includes a step of rotating the outer ring 20 compared to the inner ring 18, and therefore of the occulting ring 46 compared to the inner ring 18.

[0161] The light-transmitting zone 50 then follows the rotation of the outer ring 20.

[0162] The illuminated region 30 of the translucent base body 26 of the outer ring 20 then corresponds to the region of the translucent base body 26 opposite said light-transmitting zone 50. Thus, the illuminated region 30 follows the rotation of the outer ring 20.

[0163] The method also includes controlling, based on the spatial coordinates of the driver index 28, a vehicle function and / or a display on the touch screen 12.

[0164] Thanks to the features described above, the use of the control system 10 is more intuitive for the user because it allows him to follow the rotation of the rotary knob 14 interactively from outside the knob 14 by means of dynamic backlighting despite the absence of a wired connection between the rotary knob 14 and the control unit 36.

[0165] In addition, the dynamic backlighting system 16 adds an aesthetic aspect to the control system 10.

Claims

Demands

1. A control system (10) for at least one function of a vehicle, the control system (10) comprising a touchscreen (12) and a rotary knob (14), the rotary knob (14) comprising an inner ring (18) fixed to the touchscreen (12) and an outer ring (20) rotatably mounted relative to the inner ring (18), the outer ring (20) comprising a base body (26) and a conductive index (28), the base body (26) of the outer ring (20) being translucent and suitable for diffusing light, the conductive index (28) being integral with the base body (26) and in contact with the touchscreen (12); the control system (10) also comprising a dynamic backlighting system (16) for the outer ring (20) configured so that, during rotation by a user of the outer ring (20) relative to the inner ring (18),The translucent base body (26) of the outer ring (20) has an illuminated region (30) moving relative to the inner ring (18) following the rotation of the outer ring (20) relative to the inner ring (18), the dynamic backlighting system (16) comprising at least one light source (34) fixed to the inner ring (18), each light source (34) comprising at least one photonic component (42) and a receiver (44), the receiver (44) being adapted to receive an electric field external to the rotary knob (14) and to power said at least one photonic component (42), each light source (34) being adapted to switch from an illuminated configuration, in which said at least one photonic component (42) emits light when powered by the receiver (44), to an off configuration, in which said at least one photonic component (42) does not emit any light.

2. Control system (10) according to claim 1, wherein the dynamic backlighting system (16) comprises a processing unit (36) and an emitter (38), preferably integrated into the touch screen (12), the emitter (38) being adapted to emit an external electric field to the rotary knob, preferably an alternating electric field, the processing unit (36) being adapted to control the emitter (38).

3. Control system (10) according to claim 2, wherein the transmitter (38) and the receiver (44) are also configured to exchange data to vary between the off configuration and the confi- figure on.

4. Control system (10) according to any one of claims 2 or 3, wherein the dynamic backlighting system (16) further comprises a power supply system (40) for the transmitter, preferably integrated into the touch screen (12).

5. Control system (10) according to any one of the preceding claims, wherein the processing unit (36) of the dynamic backlighting system (16) is configured to control the switching, for said at least one light source (34), from the off configuration to the on configuration, when a user touches the rotary button (14).

6. Control system (10) according to any one of the preceding claims, wherein the dynamic backlighting system (16) comprises a plurality of light sources (34) fixed to the inner ring (18) and wherein the inner ring (18) comprises a base body (22) delimiting, for each light source (34), a window (24) arranged such that the light from the light source (34) is diffused radially outwards from the rotary knob (14), each photonic component (42) preferably being arranged opposite the window (24).

7. Control system (10) according to any one of the preceding claims, wherein the processing unit (36) of the dynamic backlighting system (16) is configured to control the switching of the light source(s) (34) from the off configuration to the on configuration, when a user touches the rotary knob (14), the backlighting system (16) further comprising a blackout ring (46), the blackout ring (46) being fixed to the outer ring (20) and having an opaque annular base body (48) and a light-transmitting area (50), said lit area (30) of the translucent base body (26) of the outer ring (20) corresponding to the area of ​​the translucent base body (26) opposite said light-transmitting area (50).

8. Control system (10) according to claim 7, taken in combination with claim 6, wherein the blackout ring (46) is arranged so that the light-transmitting area (50) allows light to pass through from only one of the windows (24) of the inner ring (18).

9. Control system (10) according to any one of claims 2 to 6, in which the processing unit (36) is configured for: - acquire the spatial coordinates of the driving index (28) on the touch screen (12); - to control the transmitter (38) to move said at least one light source (34) from one of the configurations to the other according to the spatial coordinates acquired from the conductive index (28), said lit region (30) of the translucent base body (26) of the outer ring (20) corresponding to the region of the translucent base body (26) opposite the light source or each light source (34) in the lit configuration.

10. Control system (10) according to claim 9, wherein the dynamic backlighting system (16) comprises a plurality of light sources (34) and wherein the processing unit (36) is also configured to: - determine from the acquired spatial coordinates, an angular sector of ignition and an angular sector of extinction and, - control the emitter (38) so that each light source (34) disposed in the angular sector of ignition is in the lit configuration and for each light source (34) disposed in the angular sector of extinction is in the off configuration, said lit region (30) of the translucent base body (26) of the outer ring (20) corresponding to the region of the translucent base body (26) opposite the angular sector of ignition.

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