HUMAN / MACHINE INTERFACE WITH AUTOMOBILE FUNCTIONS

Abstract

The present invention relates to a human / machine interface with functions of a motor vehicle, this human / machine interface comprising: - a touch control screen (112); and - a control system (116) designed to: display on the control screen (112) tiles (T1-3) each presenting a graphical interface (GUI1-3) of one of the respective functions (F1-3) of the motor vehicle, the tiles (T1-3) being aligned along a line (LA), detect (702) on the control screen (112) a command to replace one of the displayed tiles, called the original tile (T2), with an improved tile (T'2), in response, replace on the control screen (112) the original tile (T2) with the improved tile (T'2) which is wider than the original tile (T2) and presents a graphical interface (GUI'2) with more information and / or more touch-activated elements than the visual interface (GUI2) of the original tile (T2),detect on the control screen (112) a command to scroll the tiles (T1, T'2, T3), and in response, scroll the tiles (T1, T'2, T3) along the line (LA), including the enhanced tile (T'2). Figure for the abbreviation: Fig. 1,

Description

Title of the invention: HUMAN / MACHINE INTERFACE WITH FUNCTIONS OF A MOTOR VEHICLE Technical field of the invention

[0001] The present invention relates to a human / machine interface with functions of a motor vehicle. Technological background

[0002] A human-machine interface with the functions of a motor vehicle is known from the prior art, this human-machine interface comprising: - a touchscreen control panel; and - a control screen system designed to display on the control screen of the tiles each presenting a graphical interface of one of the respective functions of the motor vehicle.

[0003] In the prior art, pressing one of the tiles allows the user to enter a new, generally more complete interface with the function of the motor vehicle.

[0004] However, to access the other tiles, it is necessary to exit this new interface and return to the tile display. This therefore requires numerous actions from the user, particularly the driver, which can be dangerous while driving.

[0005] It may therefore be desirable to provide a human / machine interface which makes it possible to overcome at least some of the aforementioned problems and constraints. Summary of the invention

[0006] A human-machine interface with the functions of a motor vehicle is therefore proposed, this human-machine interface comprising: - a touchscreen control panel; and - a control screen control system, the control system being designed for: • display on the control screen tiles, each presenting a graphical interface for one of the respective functions of the motor vehicle, the tiles being aligned along a line, • detect on the control screen a command to replace one of the displayed tiles, called the original tile, with an improved tile, • In response, replace the original tile on the control screen with the improved tile, which is wider than the original tile and presents a graphical interface with more information and / or more touch-activated elements than the original tile's visual interface, • detect a tile scrolling command on the control screen, and • In response, scroll through the tiles along the line, including the upgraded tile.

[0007] The invention may further include one or more of the following optional features, according to any technically possible combination.

[0008] Optionally, the command to replace the original tile includes a press on a predefined area of ​​the original tile.

[0009] Optionally, the scroll command detection also includes: - detect on the control screen an initial contact at an initial contact point and a first part of a slide from this initial point to a first current contact point, called an intermediate contact point, each current contact point having an angle between a straight line passing through the initial contact point and the current contact point, with respect to a predefined straight line, for example the scroll line; - determine the angle for the intermediate point of contact; and - detect that the angle for the intermediate contact point is within one of predefined intervals, associated with the scroll command.

[0010] Optionally, the control system is also designed to: - display on the remote screen a series of visual interfaces of some of the functions of the motor vehicle; - detect on the control screen an insertion command on the remote screen of a visual interface with another of the functions of the motor vehicle, called visual interface to be displayed, in the series of visual interfaces already displayed; - define widths for the visual interfaces already displayed and the visual interface to be displayed, respectively, based on weights associated with the visual interfaces already displayed and the visual interface to be displayed, with at least two visual interfaces having different weights; and - display the sequence of visual interfaces with the visual interface to be displayed inserted, with the widths defined.

[0011] Optionally also, each width is defined by '■ L„ = P„l^ Pa> °where n is an index identifying the visual interfaces already displayed in the sequence and the visual interface of the selected function, Ln is the width of the visual interface of index n, Pn is the weighting associated with the visual interface of index n.

[0012] Optionally, the control system is also designed to detect the insertion command for the visual interface to be displayed, in order to: - display tiles on the control screen, the tiles being respectively associated with the functions; - detect on the control screen a slide starting at an initial contact point on one of the displayed tiles to select it and ending at a final contact point; - select one of several available locations on the remote screen where the visual interface can be displayed, from a position of the final contact point relative to the initial contact point, the available locations being possible insertion locations in the sequence.

[0013] Optionally also, the available location selected is selected from an angle between a line passing through the initial contact point and the final contact point and a predefined line.

[0014] Optionally, the control system is also designed to: - track a current contact point of the sliding motion, the final contact point being the current contact point where contact ceases; and - display and move a target between available locations based on the position of the current contact point relative to the initial contact point.

[0015] Optionally also, the target is moved between the available locations according to an angle between a line passing through the initial contact point and the current contact point and the predefined line.

[0016] Optionally, the control system is also designed to: - define as many angle intervals, preferably adjacent, as there are available locations, these intervals being respectively associated with the available locations, preferably in the same order as the possible insertion locations in the displayed sequence; and in which the target is moved to the possible insertion location associated with the interval in which the angle lies.

[0017] A motor vehicle comprising a human / machine interface according to the invention is also proposed.

[0018] A method for controlling a human / machine interface with functions of a motor vehicle is also proposed, this human / machine interface comprising a touch control screen and a remote screen, this method comprising: - displaying on the control screen tiles each presenting a graphical interface of one of the respective functions of the motor vehicle, the tiles being aligned along a line; - detect on the control screen a command to replace one of the displayed tiles, called the original tile, with an improved tile; - in response, replace the original tile on the control screen with the improved tile which is wider than the original tile and presents a graphical interface with more information and / or more elements that can be activated by touch than the visual interface of the original tile; - detect a tile scrolling command on the control screen; and - In response, scroll through the tiles along the line, including the tile improved.

[0019] A computer program downloadable from a communication network and / or stored on a computer-readable medium, characterized in that it includes instructions for executing the steps of a process according to the invention, when said program is executed on a computer. Brief description of the figures

[0020] The invention will be better understood with the aid of the following description, given solely by way of example and made with reference to the accompanying drawings in which: - [Fig. 1] is a view from inside the passenger compartment of a motor vehicle, in which the invention is implemented, - Figure [Fig. 2] is a block diagram of a method according to the invention for controlling a touchscreen control panel and a remote display, - Figure 3 represents the control screen during a command selection by swiping, - Figure [Fig. 4] illustrates the remote screen when a target is displayed, in the absence of a previously displayed visual interface. - Figure [5] illustrates the remote screen when a target is displayed, in the presence of visual interfaces already displayed. - Figure 6 illustrates the remote screen after the insertion of a new visual interface. - [Fig.7] is a block diagram of a method for controlling the control screen, to open a displayed tile, - Figure [8] illustrates a command to open a displayed tile, - Figure [9] illustrates the display of an enhanced tile in response to the open command, - Figure 10 illustrates a scrolling of the displayed tiles, including the enhanced tile, and - Figure 11 is a functional diagram of a computer system capable of implementing a human-machine interface control system. Detailed description of the invention

[0021] With reference to [Fig.1], an example of a motor vehicle passenger compartment 100 in which the invention is implemented will now be described.

[0022] The passenger compartment 100 includes first of all a steering wheel 102 and a driver's seat 104 located behind the steering wheel 102. The passenger compartment 100 also includes a passenger seat 106 located next to the driver's seat 104, as well as a dashboard 108. The passenger compartment 100 further includes a windscreen 109 and two pillars 109A, 109B extending from the dashboard 108 and to which the windscreen 109 is fixed.

[0023] The passenger compartment 100 further includes a human-computer interaction (HCI) 110, allowing a user of the motor vehicle, in particular a driver seated in the driver's seat 104, to interact with various functions of the motor vehicle, for example, five functions Fi_5 in the illustrated example. The functions Fi_5 include, for example, one or more of the following: a mapping service; an audio playback system; a heating, ventilation, and air conditioning (HVAC) system; a charge status and / or adjustment interface for a motor vehicle battery; and a weather service.

[0024] The human-machine interface 110 includes, in particular, a touchscreen control display 112 and a remote display 114, which may be either touchscreen or non-touchscreen. The human-machine interface 110 further includes a control system 116 for the control display 112 and the remote display 114.

[0025] The control screen 112 is located so as to be accessible in particular by the driver of the motor vehicle from the driver's seat 104, and preferably also by a passenger sitting in the passenger seat 106. The control screen 112 is for example located between the driver's seat 104 and the passenger seat 106, for example on a central leg of the dashboard 108.

[0026] The remote screen 114 is preferably in the form of a band, i.e., with a width greater than its height, preferably at least five times greater than the height. The remote screen 114 is, for example, located in front of the steering wheel 102 and extends across the entire width of the passenger compartment 100 (as illustrated), for example from less than 10 cm from one of the pillars 109A, 109B to less than 10 cm from the other of the uprights 109A, 109B. Alternatively, the remote screen 114 can extend over only part of the width of the passenger compartment 100.

[0027] The control system 116 is specifically designed to display tiles, five TM tiles in the illustrated example, on the control screen 112. Each T15 tile is associated with one of the respective Fi_5 functions of the motor vehicle. In [Fig. 1], three T13 tiles associated with the F13 functions are visible. Preferably, at least one of the T15 tiles is active and thus presents a local graphical user interface (GUI) with the associated Fi_5 function. In the illustrated example, it is assumed that all the T15 tiles are active. Thus, the local GUL 5 graphical interface of each Ti 5 tile combines a local touch user interface, allowing the user to enter commands and / or information by touching certain areas of the Ti _5 tile, and a local visual user interface allowing the display of information in the Ti _5 tile.If applicable, the other inactive tile(s) will only display a local visual interface.

[0028] The Ti 5 tiles are displayed side by side along a first alignment line LA, for example straight and / or substantially horizontal. As will be explained later, the Ti 5 tiles can be scrolled along this first alignment line LA.

[0029] The control system 116 is further designed to display, on the remote screen 114, so-called remote visual interfaces VUE_5 with respectively the F15 functions of the motor vehicle, one next to the other along a second alignment line LB, preferably substantially parallel to the first alignment line La, for example substantially horizontal.

[0030] With reference to [Fig.2], an example of a control method 200 for the human / machine interface 110 will now be described.

[0031] During a step 202, the control system 116 detects on the control screen 112 an initial contact at an initial contact point PI and a first part of a slide from this initial point PI to a first current contact point, called intermediate contact point PT.

[0032] Hereafter, "A" will be designated as an angle between a line passing through the initial contact point PI and the current contact point, with respect to a predefined line, for example the scroll line LA.

[0033] During a step 204, the control system 116 determines the angle A for the intermediate contact point PT.

[0034] During a step 206, to determine the command associated with the first part of the slide, the control system 116 detects, among intervals predefined, the predefined interval containing the angle A for the intermediate contact point PT.

[0035] For example, with reference to [Fig. 3], the predefined intervals may include a send interval IENV to "send" a function Fk to the remote screen 114, that is, to display the remote visual interface VUIk of that function Fk on the remote screen 114. The send interval IENV extends around a send direction DENV directed towards the remote screen 114. This improves usability because the user will spontaneously seek to swipe towards the remote screen 114 to send the function Fk to it. For example, the send direction DENV is in the middle of the send interval IENV. Preferably, the send direction DENV is perpendicular to the scroll line LA. For example, as in the illustrated example, the IENV sending interval extends from 45° to 135° relative to the LA scroll line.

[0036] The predefined intervals may include a retraction interval 1^ to "retract" a function Fk displayed on the remote screen 114, that is, to stop displaying the remote visual interface VUIk of that function Fk on the remote screen 114. The retraction interval IRET extends around a retraction direction DRn directed away from the remote screen 114, for example, opposite to the send direction Dbnv. This improves ergonomics because the user will spontaneously seek to swipe away from the remote screen 114 to remove the function Fk from it. For example, the retraction direction DRET is in the middle of the retraction interval IRET. Preferably, the retraction direction DRn is perpendicular to the scroll line LA. For example, as in the illustrated example, the IreT retraction interval extends from 225° to 315° relative to the LA scroll line.

[0037] The predefined intervals may include at least one scroll interval Idef_d, Idef_g for scrolling the TE5 tiles on the control screen 112. For example, each scroll interval Iref extends around the scroll line LA, on one side (called the right side) for the scroll interval Idef_d, called the right, and on the other side (called the left side) for the scroll interval Idef_g, called the left. Preferably, the scroll line LA is in the middle of each scroll interval Idef_d, Idef_g. For example, the right scroll interval Idef_d extends from 315° (-45°) to 45° and the left scroll interval Idef_g extends from 135° to 225°.

[0038] Returning to [Fig.2], if angle A is in the sending interval IENV and if the initial contact point PI is on a tile Tk (as illustrated in [Fig.3]), the following steps 208 to 216 are implemented.

[0039] During a step 208, the control system 116 displays a target C on the remote screen 114, at a possible insertion location in the suite of remote visual interfaces already displayed on remote screen 114, along the LB alignment line.

[0040] In the absence of a remote visual interface already displayed ([Fig.4]) on the remote screen 114, the rest is empty, and the target C can then, for example, be displayed at an arbitrary predefined location.

[0041] With one or more remote visual interfaces already displayed, for example, remote visual interfaces VUI4, VUI5, VUI3, in that order, as illustrated in [Fig. 5], the possible insertion locations are: at a first end of the sequence of remote visual interfaces (before remote visual interface VUI4 in [Fig. 5]), at a second end of the sequence of remote visual interfaces (after remote visual interface VUI3 in [Fig. 5]), and, when several remote visual interfaces are displayed, between two consecutive remote visual interfaces in the sequence (between remote visual interface VUI4 and remote visual interface VUI5, and between remote visual interface VUI5 and remote visual interface VUI3 in [Fig. 5]). The target C can therefore be displayed at one of these possible insertion locations.

[0042] The human / machine interface 100 allows the user to choose the possible insertion location where the target C is displayed, and therefore where to display the remote visual interface of the function of the selected tile.

[0043] For this purpose, during a step 208-2, the control system 116 detects a second sliding part from the intermediate contact point PT and follows the current contact point PC along this second sliding part.

[0044] During a step 208-4, the control system 116 moves the target C between possible insertion locations according to the angle A of the current contact point PC.

[0045] For example, the control system 116 defines as many angle intervals, preferably adjacent, as there are possible insertion locations, these angle intervals being respectively associated with the possible insertion locations, preferably in the same order as the possible insertion locations in the displayed sequence. For example, four angle intervals IM for four possible insertion locations are shown in [Fig. 5]. The control system 122 then moves the target C to the possible insertion location associated with the interval in which angle A is located.

[0046] During a step 210, the control system 116 detects an end of contact on the control screen 112. The current contact point PC at the end of contact is therefore a final contact point PF of the sliding.

[0047] In response, during a step 212, the control system 116 selects the possible insertion location associated with the interval in which angle A is located.

[0048] During a step 214, the control system 116 displays on the remote screen 114 the remote visual interface of the selected function at the selected available location.

[0049] To this end, during a step 214-2, the control system 116 defines widths for the already displayed remote visual interfaces and the remote visual interface to be displayed, respectively, based on weights associated with the already displayed remote visual interfaces and the remote visual interface to be displayed. The width of a remote visual interface is, for example, a dimension of the visual interface along the LB line. Thus, the already displayed remote visual interfaces are resized in width to allow the display of the remote visual interface to be inserted. The defined widths are larger the higher the weighting. Preferably, the widths are defined so that the already displayed remote visual interfaces and the remote visual interface to be displayed occupy a predefined total width on the remote screen 114, for example, the entire available width on the remote screen 114.For example, the length of each distant visual interface is defined in proportion to the weightings: — Pn / ^ Pn, . where n is an index identifying the remote visual interfaces already displayed as well as the remote visual interface to be displayed (that of the selected function), Ln is the width of the remote visual interface of index n (as a percentage of the predefined total width), Pn is the weighting associated with the remote visual interface of index n.

[0050] During a step 214-4, the control system 116 displays the remote visual interfaces already displayed and the remote visual interface to be displayed with the defined widths.

[0051] For example, taking the example of [Fig. 5], if the three remote visual interfaces VUL, VUI5, VUI3 already displayed have respective weights of 2, 2, and 1, these remote visual interfaces VUI4, VUI5, VUI3 occupy, before the insertion of the remote visual interface VUL to be displayed, 40%, 40%, and 20% respectively of the total predefined width. If the remote visual interface VUL to be displayed has a weight of 3, then the remote visual interfaces VUI4, VUI5, VUI3 already displayed will have widths of 25%, 25%, and 12.5%, and the remote visual interface VUL to be displayed will have a width of 37.5%, as illustrated in [Fig. 6].

[0052] If angle A is in the IreT retraction interval, if the initial contact point PI is on a tile and if the remote screen 114 displays the remote visual interface of the function associated with the tile, the following steps 216 to 220 are implemented.

[0053] During a step 216, the control system 116 detects an end of contact on the control screen 112.

[0054] During a step 218, in response, the control system 116 ceases to display the remote visual interface of the function of the selected tile.

[0055] During a step 220, the control system 116 preferably redefines the widths of the remaining displayed remote visual interface(s), for example as in step 214. Thus, taking up the previous example, if one of the remote visual interfaces with a weighting of 2 is removed, the remaining remote visual interfaces will have weights of 2, 1 and 3 and therefore widths of 33.3%, 16.7% and 50%.

[0056] If angle A is in one of the scroll intervals, the following step 222 is implemented.

[0057] During a step 222, the control system 116 follows the current contact point PC and scrolls the tiles along the scroll line LA following the movement of the current contact point PC.

[0058] With reference to [Fig.7], another control method 700 will now be described.

[0059] During a step 702 (illustrated in [Fig.8]), the control system 116 detects on control screen 112 a command to open one of the tiles, called the original tile. By "opening," we mean replacing the original tile with an improved tile, as will be described later.

[0060] For example, the local graphical interface GUE 3 of at least one of the Ti. 3 tiles displayed on the control screen 112 has a Zb3 area and the opening command involves pressing on this Zi.3 area, for example on the Z2 area on the [Fig.8].

[0061] During a step 704 (illustrated in [Fig.9]), in response to the detection of the opening command, the control system 116 replaces the original tile T2 selected with an improved tile T'2.

[0062] The enhanced tile T'2 is, firstly, wider along the scroll line La than the original tile T2. In addition, the enhanced tile T'2 features an enhanced graphical user interface GUI'2 with more information and / or more touch-activated elements than the local GUI2 interface of the original tile T2.

[0063] During a step 706, the control system 116 detects a scroll command. For example, the preceding steps 202 to 206 are implemented.

[0064] With reference to [Fig. 10], during a step 708, in response to the detection of the scroll command, the control system 116 scrolls the tiles, both the TH T3 tiles and the improved tile T'2.

[0065] For example, the previous step 222 is implemented, i.e. the control system 116 follows the current contact point PC and scrolls the tiles Tb T'2, T3 along the scroll line LA following the movement of the current contact point PC.

[0066] With reference to [Fig.

[11] , the control system 116 includes, for example, a computer system comprising a data processing unit 1102 (such as a microprocessor) and a main memory 1104 (such as RAM, from the English "Random Access Memory") accessible by the processing unit 1102. The computer system further includes, for example, a network interface and / or a computer-readable medium, such as a local medium (such as a local hard disk 1106) or a remote medium (such as a remote hard disk accessible via the network interface through a communication network) or a removable medium (such as a USB, from the English "Universal Serial Bus", or a CD, from the English "Compact Disc" or a DVD, from the English "Digital Versatile Disc") readable by means of an appropriate reader of the computer system (such as a USB port or a CD and / or DVD disc drive).A computer program 1108 containing instructions for the processing unit 602 is stored on the medium 1106 and / or downloadable via the network interface. This computer program 1108 is, for example, intended to be loaded into the main memory 1104, so that the processing unit 1102 executes its instructions designed for the computer system to implement the steps described above in process 200 and / or process 700.

[0067] Alternatively, all or part of these steps to be implemented by hardware modules, i.e. in the form of an electronic circuit, for example micro-wired, not involving a computer program.

[0068] In conclusion, it should be noted that the invention is not limited to the embodiments described above. It will indeed be apparent to those skilled in the art that various modifications can be made to the embodiments described above, in light of the information just disclosed to them.

[0069] In the detailed presentation of the invention given above, the terms used shall not be interpreted as limiting the invention to the embodiments set forth in this description, but shall be interpreted as including all equivalents which can be foreseen by a person skilled in the art by applying their general knowledge to the implementation of the teaching which has just been disclosed to them.

Claims

Demands

1. A human-machine interface (110) with functions of a motor vehicle, this human-machine interface (110) comprising: - a touchscreen control display (112); and - a control system (116) for the control display (112), the control system (116) being designed to: • display on the control display (112) tiles (Tb3) each presenting a graphical user interface (GUIi_3) of one of the respective functions (Fb3) of the motor vehicle, the tiles (Tb3) being aligned along a line (LA), • detect (702) on the control display (112) a command to replace one of the displayed tiles, called the original tile (T2), with an improved tile (T'2), • in response,replace the original tile (T2) on the control screen (112) with the enhanced tile (T'2), which is wider than the original tile (T2) and has a graphical user interface (GUI'2) with more information and / or more touch-activated elements than the visual user interface (GUI2) of the original tile (T2); detect a tile scrolling command (Tb T'2, T3) on the control screen (112); and, in response, scroll the tiles (Tb T'2, T3) along the line (LA), including the enhanced tile (T'2).

2. Human / machine interface (110) according to claim 1, wherein the original tile replacement control (T2) includes a support on a predefined area (Z2) of the original tile (T2).

3. Human-machine interface (110) according to claim 1 or 2, wherein the scroll command detection comprises: - detecting on the control screen (112) an initial contact at an initial contact point (PI) and a first part of a slide from this initial point (PI) to a first current contact point, called intermediate contact point (PT), each current contact point having an angle (A) between a line passing through the initial contact point (PI) and the current contact point, with respect to a predefined line, for example the scroll line LA; - determine the angle (A) for the intermediate contact point (PT); and - detect that the angle (A) for the intermediate contact point PT is in one of predefined intervals, associated with the scroll command.

4. Human-machine interface (110) according to claim 3, wherein the control system (116) is further designed to: - display on the remote screen (114) a series of visual interfaces (VUI1.3) of some of the functions (F1.5) of the motor vehicle, - detect on the control screen (112) an insertion command on the remote screen (114) of a visual interface with another of the functions of the motor vehicle, called the visual interface to be displayed, in the series of visual interfaces already displayed, - define widths for respectively the visual interfaces already displayed and the visual interface to be displayed, from weights respectively associated with the visual interfaces already displayed and the visual interface to be displayed, at least two visual interfaces having different weights, and - display the series of visual interfaces with the visual interface to be displayed inserted, with the defined widths.

5. Human / machine interface (110) according to claim 4, wherein each width is defined by: = Pnl^ Pu °ù n is an index identifying the visual interfaces already displayed in the sequence and the visual interface of the selected function, is the width of the visual interface of index ”, Pn is the weighting associated with the visual interface of index n.

6. Human-machine interface (110) according to claim 4 or 5, wherein the control system (116) is further designed, for detect the command to insert the visual interface to be displayed, for: - display tiles on the control screen (112), the tiles being respectively associated with the functions; - detect on the control screen (112) a slide starting at an initial contact point (PI) on one of the displayed tiles to select it and ending at a final contact point (PF); - select one of several available locations on the remote screen (114) where the visual interface can be displayed, from a position of the final contact point (FP) relative to the initial contact point (IP), the available locations being possible insertion locations in the sequence.

7. Human / machine interface (110) according to claim 6, wherein the available location selected is selected from an angle (A) between a straight line passing through the initial contact point (PI) and the final contact point (PF) and a predefined straight line.

8. Motor vehicle comprising a human / machine interface (110) according to any one of claims 1 to 7.

9. A method (700) for controlling a human-machine interface (110) with the functions of a motor vehicle, this human-machine interface (110) comprising a touchscreen control display (112) and a remote display (114), this method comprising: - display tiles (Ti.3) on the control screen (112) ) each presenting a graphical interface (GUIi 3 ) of one of the respective functions (Fi.3) of the motor vehicle, the tiles (Tb3) being aligned along a line (La); - detect (702) on the control screen (112) a command to replace one of the displayed tiles, called the original tile (T2), with an improved tile (T'2); - in response, replace the original tile (T2) on the control screen (112) with the improved tile (T'2) which is wider than the original tile (T2) and has a graphical interface (GUI'2) with more information and / or more touch-activated elements than the original tile's visual interface (GUI2) (T2); - detect on the control screen (112) a command to scroll the tiles (Tb T'2, T3); and - in response, scroll the tiles (Tb T'2, T3) along the line (La), including the enhanced tile (T'2).

10. Computer program (1108) downloadable from a communication network and / or stored on a computer-readable medium, characterized in that it includes instructions for carrying out the steps of a process (700) according to claim 9, when said program is executed on a computer.

Images