Display unit for sports equipment

Abstract

The present application relates to a display unit (100) for a sports apparatus (200), comprising:-an electronic control unit (1), a first display (3), a second display (5); -a control panel (20) comprising:-a screen (21) provided with a recess (22) for guiding a user to navigate within a navigable menu and a plurality of graphical keys each associated with a function or command selectable by the user; -a capacitive keyboard (30) comprising a first electrode (31) associated with the recess, and a plurality of additional electrodes operatively associated with the keys, respectively, and connected to the electronic control unit by conductive tracks (47). When a user touches the recess or one key, the control unit visualizes a menu on the first display, or implements a function associated with the display unit, or transmits a command associated with the touched key to the instrument. The control unit visualizes the selected training course on the first display and visualizes the operating parameters of the instrument or the results of the parameters at the end of the training course on the second display.

Description

Technical Field

[0001] The present application relates to a display unit for a sports apparatus. Background Art

[0002] The use of devices or display units associated with exercise machines (such as treadmills, bicycles, etc.) is widely used and well known in the art.

[0003] The unit is configured to enable a user to select a desired type of training session, such as uphill running, flat running, tempo running, long-distance running, etc., to set and / or modify one or more parameters of the selected session during execution, such as duration, difficulty level, pace / speed, and to visualize an approximation of ongoing or completed performance.

[0004] The units known from the prior art, although capable of adequately performing the envisaged service, present certain aspects that could be improved, in particular with regard to simplicity and cost of production, ease of use, functional integration in the presence of contaminants that could cause malfunctions, such as typical and unavoidable drops of sweat during training sessions. Summary of the invention

[0005] Therefore, the object of the present application is to provide a display unit for sports equipment, which can alleviate one or more of the aspects described, and in particular, the display unit is easy to use and easy to produce at a relatively low cost, and / or is capable of at least partially offsetting, or even completely eliminating, the negative effects of contaminants (especially sweat droplets) during use.

[0006] This object, as well as other objects which will become apparent from the following description, are achieved by a display unit for a sports machine, the features of which are defined in claim 1 .

[0007] Particular embodiments are the object of respective dependent claims, the content of which is intended as an integral part of the present description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other features and advantages of the present application will become more apparent from the following detailed description of exemplary and non-limiting embodiments with reference to the accompanying drawings, in which:

[0009] Figure 1 Schematically illustrates: an exploded view of a display unit for a sports device according to the present application;

[0010] Figure 2 Schematically illustrates: a front view of a portion of a capacitive keyboard used in a display unit for a sports machine according to the present application;

[0011] Figure 3is a front view of a plurality of keys graphically represented on a front screen of a display unit in an embodiment according to the present application;

[0012] Figure 4 A display unit for a sports device mounted on the handlebars of a bicycle is shown. DETAILED DESCRIPTION

[0013] It should be noted that in the following detailed description, components illustrated in the drawings are not necessarily to scale and that certain features described may be shown in rather schematic form.

[0014] In addition, when the term "configured to" or "shaped to" or similar terms are used in the present context with respect to any component or any portion of a component as a whole, the terms are intended to correspondingly include the structure and / or configuration and / or shape and / or positioning of the component or portion to which they relate.

[0015] In particular, when the terms refer to hardware or software electronics, they are intended to include circuits or portions of electronic circuits, as well as software / firmware such as algorithms, routines and programs that typically reside in execution and / or in any storage media.

[0016] Figure 1 An exemplary embodiment of a display unit (indicated by reference numeral 100) for a sports apparatus according to the present application is schematically shown, and Figure 4 The display unit 100 is illustrated as being mounted on a handlebar of a bicycle 200 .

[0017] Obviously, the bicycle only represents an example of a possible exercise machine with which the display unit can be associated, and the display unit 100 according to the present application can also be used with other exercise machines (such as treadmills, etc.).

[0018] As shown in the figure, the display unit 100 includes:

[0019] - at least one electronic control unit (or controller) 1;

[0020] - a first display 3, in particular a liquid crystal display, for displaying at least one navigable menu comprising training courses selectable and parameterizable by the user;

[0021] - At least a second display 5 adapted to display at least user settable parameter values ​​indicative of the operation of the exercise machine 200 during the execution of a user selected training session or parameters related to the results (or performance data of the user) at the end of the execution of the selected training session.

[0022] exist Figure 1In the illustrated exemplary embodiment, the display unit 100 further includes a display 5A, hereinafter referred to as a third display 5A, and both the display 5 and the display 5A are, for example, substantially similar to each other in structure and function.

[0023] The second display 5 and the third display 5A (when it is used) are, for example, LED displays.

[0024] The display unit 100 also includes a control panel 20, which includes a capacitive keyboard 30 and a screen or cover glass 21 (hereinafter referred to as screen 21), which is at least partially transparent, such as made of screen-printed glass, and is placed in front of the capacitive keyboard 30.

[0025] Usefully, on the at least partly transparent screen 21, recesses 22 are provided, for example by milling, for guiding the user in navigating within a navigable menu of training courses.

[0026] In addition, a plurality of keys 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 (hereinafter indicated as “keys” or “graphic keys” for simplicity of description) are graphically represented on the screen 21, each of which can be associated with a user-selectable function or command.

[0027] Specifically, Figure 2 As shown, the capacitive keyboard 30 includes a first electrode 31 operably associated with the groove 22, and a plurality of additional electrodes 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45 operably associated with one of the plurality of graphic keys 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 graphically represented on the screen 21, respectively.

[0028] The first electrode 31 and the plurality of additional electrodes 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 are each connected to at least one electronic control unit 1 via a corresponding conductive track 47 .

[0029] The number of graphic keys represented on the screen 21 may be appropriately changed depending on the sports machine to which the display unit is to be associated and the functions to be provided by the sports machine.

[0030] In particular, the display unit 100 conveniently includes a capacitive keyboard 30 suitable for all types of sports equipment, so that the display unit can be used by changing the graphic key group represented on the screen 21 according to the application.

[0031] Usefully, in an exemplary embodiment, at least one electronic control unit 1 is configured to selectively inhibit the operation of at least one of the plurality of additional electrodes 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, in particular when one of these keys is not graphically represented on the screen 21.

[0032] Indeed, if the use of a command or a specific function is not foreseen for a specific sports machine, the corresponding graphic key is not represented on the screen 21 and the operation of the corresponding electrode on the capacitive keyboard 30 can be disabled via software, for example by at least one electronic control unit 1 .

[0033] In this way, if the user mistakenly touches an area of ​​the screen 21 in which no graphical key is represented, there are in any case electrodes of the capacitive keyboard 30 corresponding to the functionality of the non-represented keys below said area, but due to the prohibition procedure said error does not result in any response from the display unit 100.

[0034] The functions / commands associated with the graphic keys may be functions relative to the display unit 100 itself or functions associated therewith, and the commands may be relative to actions to be transmitted to the exercise machine 200 itself.

[0035] Furthermore, one or more, preferably all, of the graphical keys are graphically represented by an icon / symbol symbolizing the function / command associated therewith.

[0036] For example, in an embodiment, and for example by Figure 3 As shown, keys 7 and 8 of the first subgroup are visualized on both sides of the groove 22 and the first one (key 7) is associated with a return / cancel function visualized on the first display 3 or possibly selected by the user, while the second one (key 8) is associated with a confirmation of the selection recognized by the groove 22 and visualized on the first display 3.

[0037] The keys of the second subgroup, namely keys 10, 11, 12, 13 and 14, are visualized, for example, in the lower central area of ​​the screen 21 and include key 10 for managing the connection to the heart rate belt, key 11 for transmitting a pause command to the sports device 200, key 12 for transmitting a command to start or restart a training course to the sports device 200, key 13 for transmitting a final stop command to the sports device 200 or for performing a final cooling step, and key 14 for identifying the user on the sports device by means of an identification code or a connection to a user's personal device such as a smart watch or a smart phone.

[0038] The keys of the third group, namely keys 6, 15 and 16, 9 and 17 and 18, are visualized, for example, on both sides of the screen 21. For example, keys 6 and 9 are associated, via corresponding electrodes of the underlying capacitive keyboard 30, with a control unit for managing data to be visualized on one or both of the displays 5 and 5A, while keys 15 and 16 and 17 and 18 are associated with the visualization of a training parameter that can be modified by the user acting on keys 15 or 17 (increase) and 16 or 19 (decrease), and whose value is visualized on the display 5 or on the displays 5 and 5A during a training session.

[0039] In a possible embodiment, the capacitive keyboard 30 may include a first dielectric layer, a conductive layer and a support layer. A protective layer and an adhesive layer may exist between the layers to ensure the functionality of each component.

[0040] The conductive material used in the capacitive keyboard 30 can be of different types, such as copper, indium tin oxide, silver, etc.

[0041] In the display unit 100 according to the present application, at least one electronic control unit 1 is configured to receive a signal input from a capacitive keyboard 30, which selectively indicates a change in capacitance caused by a user's action on the groove 22 or on one of the graphic keys 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and issues a corresponding command signal.

[0042] In particular, if the user has acted on the groove 22 , the at least one electronic control unit 1 is configured to emit a corresponding command signal suitable for visualizing at least on the display 3 a navigable menu of training courses selected and parameterized by the user.

[0043] In particular, during a user's action on the recess 22, the electronic control unit 1 continuously processes the signal indicative of the capacitance variation caused by the user's action and enables a progressive visualization of a navigable menu page (which may also comprise various navigable sub-menus).

[0044] In a possible embodiment, the recess 22 and the associated first electrode 31 can be configured to also implement functions / commands of the sports machine via the electronic control unit 1 .

[0045] However, if the user has acted on one of the graphic keys, the at least one electronic control unit 1 is configured to emit a corresponding command signal suitable for implementing the function / command associated with the graphic key on which the user has acted.

[0046] Corresponding to the user's actions, the at least one electronic control unit 1 is further configured to visualize the selected training course on the first display 3 during the execution of the training course or at its end, and to correspondingly visualize at least one or more operating parameters of the currently selected sports equipment or parameters related to the user's results at the end of the execution of the selected training course on the display 5 or on the second display 5 and the third display 5A.

[0047] In practice, some graphic keys have the function of changing the visualization, while others have the function of adjusting the operating parameters of the machine. The latter also cause a change in the visualization, which means that the values ​​of the visualization operating parameters are updated accordingly.

[0048] For example, if the speed on the treadmill is increased by acting on the corresponding graphic key, the visualized current speed value is updated.

[0049] Conveniently, according to a possible embodiment that is both simple and effective, the display unit 100 comprises one or more double adhesive material layers or sheets 4 configured to attach the display 3 and each LED display 5 , 5A to the control panel 20 .

[0050] In particular, the first display 3 and the second display 5 and also the third display 5A (when used) are fixed, for example bonded directly or indirectly, to the rear side of the control panel, for example by one or more sheets of double adhesive material 4 .

[0051] For example, Figure 1 As shown, the first display 3 is inserted into a support 101 , for example in the shape of a pocket, which is fixed to the control panel 20 by at least one double adhesive patch, so as to be as close as possible to the panel 20 itself.

[0052] The second display 5 and the third display 5A (when it is used) are in turn connected to a support 102 fixed to the control panel 20A.

[0053] exist Figure 1 In the illustrated embodiment, the second display 5 and the third display 5A are placed substantially symmetrically to each other on the side of the first display 3 , and are arranged to correspond to the two openings 102A provided on the support 102 .

[0054] Obviously, the assembly of the various parts, and in particular the fixing of each display 3, 5 and 5A, can be carried out in different ways, such as for example by mechanical fixing with screws, air bonding or optical bonding.

[0055] like Figure 1As shown in the embodiment of FIG. 1 , the display unit 100 also comprises a rear metal wall 104 and a support 105, also of metal, for example, which, once assembled with the control panel 20 and all the components placed therebetween, essentially form the rear portion of the display unit 100 itself.

[0056] In a possible embodiment, the capacitive keyboard 30 is a self-capacitive keyboard, wherein for each graphic key 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 and for the groove 22, only one corresponding electrode is provided.

[0057] In this case, when the display unit 100 is used, for example when the user "presses" the corresponding key, the user's finger represents the second electrode, the capacitance of the system changes, and this change is appropriately processed by the at least one electronic control unit 1. In more detail, the electrode of a single button can be made of a single conductive element or with multiple conductive elements in order to obtain several signals and improve the reliability of the detection of contact with the user's finger.

[0058] This scheme is particularly simple for effective operation in the presence of sweat droplets.

[0059] Alternatively, the capacitive keyboard 30 is a mutual capacitive keyboard, wherein for each graphical key 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 and for the groove 22, a corresponding pair of electrodes is provided.

[0060] In this case, when a user's finger "presses" a key, the electric field between the two electrodes associated with that key changes, thereby changing the capacitive coupling.

[0061] In another embodiment, the capacitive keyboard is partially self-capacitive and partially mutual-capacitive.

[0062] In a possible embodiment, the display unit 100 , and in particular its capacitive keyboard 30 , comprises a protection grid 50 arranged around the first electrode 31 and each of the plurality of additional electrodes 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 .

[0063] The grid 50 is, for example, made of strips of crossing conductive material to form a grid, and is placed on a layer of dielectric material.

[0064] Said grid 50 performs a protection function for the user of limiting the emission of electromagnetic signals, as well as determining the "safety" of valid activation of the key, as opposed to an "abnormal" condition.

[0065] In particular, if the user's finger is not exactly on a key but partially on the grid, at least one electronic control unit 1 is configured to detect this anomaly and not consider the partial touch of a key as a valid selection of said key.

[0066] Another advantage associated with this grid is the detection of other "abnormal" conditions, such as those caused by sweat; in fact, a drop of sweat will be able to change the capacitance similar to the touch of a finger.

[0067] In particular, to avoid activation of the keys by sweat drops, the electronic control unit 1 is configured to interpret the signal indicating a capacitance change caused by a user acting on one of the grooves 22 or the graphic key only if the capacitance change occurs at a speed greater than a determined threshold.

[0068] In fact, if, for example, a drop of sweat falls on the grid 50 (or partly on the grid and partly on the key) and slides towards the area near the key, the algorithm implemented in the electronic control unit 1 is configured so that the capacitance change is not interpreted as a real touch of the key, because the sweat drop changes the capacitance gradually and not abruptly as occurs in the case of a valid touch of a finger.

[0069] Furthermore, the change in capacitance is proportional to the contact area; in the event that an object with conductive properties (such as the metal surface of a mobile phone) is placed on the screen 21, the fact that it covers several keys enables the control unit to exclude that what is occurring is due to the touch of a finger on the key.

[0070] In a possible embodiment, Figure 1 and Figure 2 As shown, the groove 22 and the first electrode 31 are annular in shape and can be activated by a user by sliding a finger along the groove 22, or by pressing on a plurality of predetermined positions angularly spaced from each other along the groove.

[0071] In particular, according to Figure 2 In the possible embodiment shown, the first electrode 31 is formed by a plurality of angular sectors, preferably four angular sectors 31A, 31B, 31C, 31D, which are made of conductive material and are electrically separated from each other two by corresponding portions of corresponding dielectric material 48 .

[0072] In this case, if Figure 2 As shown, each of the angular sectors 31A, 31B, 31C, 31D of conductive material is connected to the first electronic control unit 1 via a corresponding conductive track 47 .

[0073] like Figure 2As shown, each respective portion of the dielectric material 48 interrupts electrical continuity between an angular sector and an adjacent angular sector and may be shaped, for example, like a curved tip or beak of an arrow.

[0074] According to this embodiment, the at least one electronic control unit 1 is configured to receive the input signal, which selectively indicates the capacitance change caused by the user's action along the groove 22 corresponding to at least one angular sector among the multiple angular sectors 31A, 31B, 31C, 31D, and convert the detected capacitance change into a digital signal, which indicates the corresponding angular position along the groove 22 where the user moves.

[0075] Thus, according to the area that the user slides over on the display 3, a corresponding part of the navigable menu is visualized on the first display 3, for example, one or more icons are visualized in sequence, and each icon is associated with a selectable training course.

[0076] In a possible embodiment of the display unit 100 according to the present application, the at least one electronic control unit 1 consists of a single electronic control unit or controller which is suitably configured to perform the various functions described.

[0077] In another possible embodiment, and as Figure 1 As shown, at least one electronic control unit 1 includes a first electronic control unit 1 (or a first controller) and a second electronic control unit 2 (or a second controller).

[0078] The first electronic control unit 1 is connected to the capacitive keyboard 30 and the second electronic control unit 2 and is mainly dedicated to controlling the capacitive keyboard 30 and processing the signals sent by it.

[0079] In particular, the first electronic control unit 1 is configured to receive each signal input from the capacitive keyboard, which selectively indicates a capacitance change caused by an action of the user on the groove 22 or on one of the visual graphic keys, and to emit a corresponding signal indicating the action performed by the user.

[0080] For example, the electronic control unit 1 comprises a suitable printed circuit board associated with a microcontroller which converts analog signals received from the capacitive keyboard 30 into digital signals and supplies them as input to the second electronic control unit 2 .

[0081] The second electronic control unit 2 is for example dedicated to the actual control of the sports machine 200 and may also comprise a printed circuit board and an associated processor executing one or more software modules for the management logic of the functions related to the various keys and grooves 22 .

[0082] In fact, the second electronic control unit 2 is configured to receive the corresponding digital signal input from the first electronic control unit 1 and issue the corresponding command signal.

[0083] For example, if the one processed by the first electronic control unit 1 is recognized as a valid press of a key by the user, this triggers an event connected to the pressed key and a message is sent to the second electronic control unit 2, in which the relative operation flow is implemented for issuing the command signal and any possible corresponding visualization on the first display 3 and / or the second display 5 and / or the third display 5A.

[0084] The second electronic control unit 2 thus decides which action triggers an event on the display unit 100 or on the sports machine and therefore what should be visualized on the first display 3 and / or the display 5, 5A and / or whether the sports machine must, for example, be started, put into standby or stopped.

[0085] In practice, when the user is located on a sports machine equipped with a display unit 100 and wants to perform a training session, he starts by acting on the groove 22, for example sliding a finger along said groove 22 (or touching one of the predetermined angular positions), thereby modifying the visualization on the display 3 and successively visualizing the possible training sessions available.

[0086] For example, the user can select a course with a time or alternatively a length goal from a navigable menu on the display 3, which presents various icons, each icon relating to a different course, and then press the right key (key 8) to confirm the selection, or press the left key (key 7) to return if the wrong course was selected or if he changed his mind.

[0087] Once the desired training course has been selected, the user acting on the groove 22 can modify one or more of its parameters; for example, if a time course has been selected, the time length of the training course can be set to the desired value and then confirmed by pressing the key 8 again.

[0088] Furthermore, by acting on the various keys, the user can select one or more parameters that he wishes to visualize / modify.

[0089] If used, actions on the graphical keys or grooves 22 may be suitably accompanied by corresponding acoustic sounds or tactile feedback, for example implemented by the single electronic control unit 1 or by the second electronic control unit 2 .

[0090] Once a training session has been selected with associated parameters relevant to both the selected session and the operation of exercise machine 200, the user selects the "Start" button 12 and exercise machine 200 starts.

[0091] During the selection, the selections made, such as the selected course and / or preset time, are graphically visualized on the first display 3, while the parameters set for the sports machine are visualized on the second display 5 or respectively on the second display 5 and the third display 5A.

[0092] During the training session, the user may modify the settings of exercise machine 200, such as increasing or decreasing the values ​​of preset parameters.

[0093] For example, when the display unit 100 is associated with a treadmill, by acting on keys 15 and 16 the parameter “belt speed” can be increased or decreased, while by acting on keys 17 and 18 the parameter “belt inclination” can be increased or decreased.

[0094] In fact, it has been determined how the display unit 100 according to the present application achieves its intended scope because it has a simple structure that can be produced at a relatively low cost, can be easily and intuitively operated by a user, and in which the negative effects of contaminants, especially sweat drops, are mitigated.

[0095] Of course, many variations and implementation details thereof may be applied to the above exemplary and non-limiting embodiments without departing from the scope of the present application as defined in the appended claims, without violating the scope of protection of the present application as defined in the appended claims. For example, the screen 21 may be made of another material, the display may use different visualization modes and technologies than those described above, etc.

Claims

1. A display unit (100) for a sports device (200), characterized in that: At least: - at least one electronic control unit (1); - a first display (3) for displaying at least one navigable menu comprising training courses selectable and parameterizable by a user; - at least a second display (5) adapted to display at least user-settable parameter values ​​representative of the operation of the sports machine (200) during the execution of a training session selected by the user, or to display parameters related to the results at the end of the execution of the selected training session; - A control panel (20) comprising: - a screen (21) provided with a recess (22) for guiding the user's navigation within the navigable menu and on which a plurality of keys (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18) are graphically represented, each of the plurality of keys being associated with a function or command selectable by the user; - a capacitive keyboard (30) comprising a first electrode (31) operatively associated with said recess (22), and a plurality of additional electrodes (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46), each additional electrode operatively associated with one of said plurality of keys, said first electrode (31) and said plurality of additional electrodes (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46) being each connected to said at least one electronic control unit (1) via a respective conductive track (47); and wherein the at least one electronic control unit (1) is configured to receive an input signal, the signal selectively indicating a capacity change caused by an action of the user on the groove (22) or on one of the keys, and to issue a corresponding command signal, the command signal being adapted to: - when the user has operated the recess (22), displaying the navigable menu of training courses on the first display (3); - implementing a function associated with the display unit (100) itself, or sending a command to the sports machine (200) associated with the key on which the user has operated, the at least one electronic control unit (1) causes the selected training course to be shown on the first display (3) and at least one or more operating parameters of the currently selected sports machine to be shown on the second display (5), or one or more parameters related to the result at the end of the execution of the selected training course.

2. The display unit (100) according to claim 1, wherein the at least one electronic control unit (1) is configured to selectively inhibit the operation of at least one electrode of the plurality of additional electrodes (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46).

3. The display unit (100) according to any one of claims 1 and 2, wherein the capacitive keyboard (30) is a self-capacitive keyboard, wherein for each key of the plurality of keys (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18) and for the groove (22), only one corresponding electrode is provided.

4. The display unit (100) according to any one of claims 1 and 2, wherein the capacitive keyboard (30) is a mutual capacitive keyboard, wherein for each graphic key (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18) and for the groove (22), a corresponding pair of electrodes is provided.

5. A display unit (100) according to any of the preceding claims, comprising a protective grid (50), which is arranged around the first electrode (31) and each of the plurality of further electrodes (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46).

6. A display unit (100) according to any one of the preceding claims, wherein the groove (22) and the first electrode (31) have an annular shape and are configured to be actuated by the user by sliding along the groove (22) or by pressing at a plurality of predetermined positions angularly spaced from each other along the groove (22).

7. A display unit (100) according to claim 6, wherein the first electrode (31) comprises a plurality of angular sectors (31A, 31B, 31C, 31D) of conductive material, the plurality of angular sectors (31A, 31B, 31C, 31D) of conductive material being electrically separated from each other two by respective portions (48) of dielectric material, each angular sector of conductive material being connected to the first electronic control unit (1) by a respective conductive track (47).

8. A display unit (100) according to claim 7, wherein the first electrode (31) comprises four angular sectors of conductive material, the angular sectors being electrically separated from each other two by four corresponding portions (48) of dielectric material.

9. A display unit (100) according to any one of claims 7 or 8, wherein the at least one electronic control unit (1) is configured to receive the input signal, the signal selectively indicating a capacitance change caused by the user's action along the groove (22) at at least one of the multiple angular sectors, and convert the detected capacitance change into a digital signal, the digital signal indicating the corresponding angular position of the user's action along the groove (22).

10. The display unit (100) according to any one of the preceding claims, wherein the at least one electronic control unit (1) comprises: - a first electronic control unit (1) configured to receive a signal from the capacitive keyboard (30), the signal selectively indicating a change in capacitance caused by the action of the user on the groove (22) or on one of the graphic keys, and to output a corresponding digital signal representing the action performed by the user; - a second electronic control unit (2) configured to receive the corresponding digital signal from the first electronic control unit (1) and to issue the corresponding command signal.

11. A display unit (100) according to any of the preceding claims, comprising at least one layer or sheet (4) of bioadhesive material, wherein the at least one layer or sheet (4) of bioadhesive material is configured to attach at least one of the first display (3) and the second display (5) to the control panel (20).

Images