FR3052267A1 - METHOD FOR CONTROLLING A SET OF CONTENT RESTITUTION DEVICES, DEVICE AND CONTROL SYSTEM THEREFOR - Google Patents

Abstract

The invention relates to a method for controlling a set of content restoration devices comprising at least one rendering device, the method comprising: a reception step (S300) originating from at least one object, a first signal comprising an identifier of said object; a locating step (S310) making it possible to obtain for each object having emitted a first signal, and from said first signal, a position associated with said object; a first step of controlling (S320) at least one rendering device among the set of rendering devices so that said at least one rendering device is in working order, and so that the broadcasting space said at least one rendering device covers at least one position obtained at the locating step (S310).

Description

Background of the invention

The present invention relates to the field of control of content rendering devices, and more particularly relates to a method and a control system of a set of content rendering devices.

In known manner, some conference rooms or meeting rooms include a videoconferencing system configured to detect a person speaking, for example by means of a microphone, and configured to control a camera of the system so as to film that person.

However, such a videoconferencing system does not take into account the other people present at the conference or meeting.

Object and summary of the invention

The present invention relates to a method of controlling a set of content restoration devices comprising at least one content restoration device, each content restoration device being located in a reference frame, the method comprising: a reception step, from at least one object, a first signal comprising an identifier of the object; - A location step for obtaining for each object having emitted a first signal, and from the first signal, a position associated with the object in the reference; a first step of controlling at least one content rendering device among the set of content rendering devices, so that the at least one content rendering device is in working order, and so that the broadcasting space of the at least one content rendering device covers at least one position obtained at the location step.

Thus, the set of content rendering devices is automatically and dynamically controlled so that it is possible for an individual located at the position obtained to see the image and / or hear the sound emitted by the rendering device. , comfortably, without this individual or another, responsible for managing playback devices, turns on the device and / or changes the position and / or orientation of the device.

In a particular embodiment, the first signal includes information relating to the presence of at least one individual.

In a particular embodiment, the method further comprises a second step of receiving, from at least one object, a second signal comprising the identifier of the object and information relating to the absence of at least one individual hitherto present.

In a particular embodiment, the method further comprises, for each second signal received, a second step of controlling at least one content rendering device among the set of content rendering devices, the broadcast space each monitored content restoration device during this second control step covering the position associated with the object that sent the second received signal, the second control step comprising for example a substep of determining a control to send, the command containing a shutdown instruction.

In a particular embodiment, the first control step comprises a substep of selection of a playback device to be checked, in which the playback device is selected from a subset of the set of playback devices comprising at least one rendering device of the same type.

In a particular embodiment, each device for restoring the subset of the set of rendering devices is in the off state.

In a particular embodiment, the rendering device selected in the selection sub-step is the device of the subset of the set of rendering devices located closest to said position.

In a particular embodiment, the first control step comprises a substep of determining a command to be sent to the rendering device selected in the selection sub-step, this command comprising a readiness command, a shift instruction and / or an orientation change instruction.

In a particular embodiment, such a rendering device is a display screen, the diffusion space of the screen being defined by the horizontal viewing angle of the screen and the vertical viewing angle of the screen. 'screen. The invention further relates to a device for controlling a set of content restoration devices comprising at least one content restoration device, each content restoration device being located in a reference frame, the device comprising: a unit of communication adapted to receive, from at least one object, a first signal comprising an identifier of the object; - A locating unit capable of obtaining for each object having emitted a first signal, and from the first signal, a position associated with the object in the marker; a control unit capable of controlling at least one content-reproduction device among the set of content-rendering devices, so that the at least one content-rendering device is in working order, and so that the broadcasting space of the at least one content rendering device covers at least one position obtained by the localization unit. The invention furthermore relates to a system for controlling a set of content restoration devices comprising at least one content rendering device, this system comprising: a control device as briefly described above; content reproduction devices, and - at least one object configured to transmit at least a first signal comprising an identifier of this object, to the control device.

In a particular embodiment, the various steps of the control method according to the invention are determined by instructions of computer programs.

Accordingly, the invention also relates to a computer program, on an information carrier, this program comprising instructions adapted to the implementation of the steps of a control method according to the invention.

This program can use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in any other form desirable shape. The invention also relates to a computer-readable information medium, comprising instructions of a computer program as mentioned above.

The information carrier may be any entity or device capable of storing the program. For example, the medium may comprise storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or a magnetic recording means, for example a hard disk. On the other hand, the information medium may be a transmissible medium such as an electrical or optical signal, which may be conveyed via an electrical or optical cable, by radio or by other means. The program according to the invention can be downloaded in particular on an Internet type network.

Alternatively, the information carrier may be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the method in question.

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will emerge from the description given below, with reference to the accompanying drawings which illustrate an embodiment having no limiting character. In the figures: FIG. 1 schematically represents a system comprising a device for controlling a set of content restoration devices, according to an exemplary embodiment of the invention; FIG. 2 schematically represents a control device, according to an exemplary embodiment of the invention; FIG. 3 represents, in flowchart form, the main steps of a method of controlling a set of content restoration devices, according to an exemplary embodiment of the invention; FIG. 4 represents, in flowchart form, the main substeps of a control step of a control method, according to an exemplary embodiment of the invention; - Figure 5 shows schematically a device for rendering a system according to an exemplary embodiment of the invention.

Detailed description of several embodiments

The present invention relates to the field of control of content rendering devices, and more particularly relates to a method and a control system of a set of content rendering devices.

FIG. 1 schematically represents a system 100, for example a videoconferencing system, the system 100 comprising a device 105 for controlling a set of DR content reproduction devices, according to an exemplary embodiment of FIG. the invention.

The system 100 comprises a set of at least one object OBj, comprising for example a first object OBi and a second object OB2. Each OBj object may be a device capable of detecting the presence or absence of an individual, as described in more detail below.

The system 100 further comprises the set of reproduction devices DR ,, which comprises at least one rendering device DRj, for example a first rendering device DRi and a second rendering device DR2. Each device DRj restitution is located in a reference R.

The control device 105 is for example a server. The control device 105 comprises a communication unit 120 able to receive, from at least one object OB ,, a first signal GIS, including an identifier ID, of the object OBj.

The first signal SIGj is, for example, a Bluetooth signal or a Wi-Fi signal. Thus, the communication unit 120 can use a mode of communication by radio waves, for example by Bluetooth or Wi-Fi. communication used can be wired.

The control device 105 further comprises a locating unit 130 able to obtain for each object OB, having emitted a first signal SIG ,, and from the first signal SIG · ,, a POS position, associated with said object OB, in the R. mark

In addition, the control system 100 comprises a control unit 140 able to control at least one content reproduction device DRj among the set of content reproduction devices DRj, so that the at least one reproduction device DRi of content is in working order, and so that the broadcast space ED, of the at least one content reproduction device DR, covers at least one POS position, obtained by the localization unit 130.

The reference R is in one example an orthonormal marker having a first axis X, a second axis Y and a third axis Z. In one example, the mark R is a marker of a space formed by a room. Alternatively, the R mark is a geolocation mark.

"Content rendering device" means a device whose function is to produce a sound and / or to display one or more images. Thus, "content" means an image, a video or a sound content.

In one example, the set of DR rendering devices, content comprises at least one display screen, such as a computer screen, a television screen or an overhead projector screen. As a variant, the set of content reproduction devices DRj comprises at least one loudspeaker. The set of reproduction devices DR, content typically comprises several DRj playback devices. The set of reproduction devices DRj content may include several DR rendering devices of the same type, for example several computer screens or several speakers. The set of DR rendering devices, content may also include several rendering devices DRj of different types, for example several television screens and several speakers, or several television screens and a speaker.

By "state of play of a rendering device DRj" is meant a state in which the rendering device DRj is capable of rendering a multimedia content.

Thus, when the rendering device DR is a screen, the operating state of the rendering device DR corresponds to a state of the screen in which the screen is able to broadcast an image or a video.

More specifically, when the rendering device DRj is a television or computer screen, the operating state of the rendering device corresponds to a state where the screen is at least lit, and where the screen can display an image or a video. In addition, when the rendering device DRj is an overhead projector screen, the operating state corresponds to a state where the screen is at least unwound, and where the screen can display an image or a video.

Moreover, when the rendering device DRj is a speaker, the operating state of the rendering device DRj corresponds to a state in which the speaker is at least lit, and where the loudspeaker can emit a sound.

By "diffusion space EDj of a rendering device DRj" is meant a space within which the multimedia content is reproduced in an intelligible manner. Thus, an individual positioned within the broadcast space ED, can see and / or hear the image and / or the sound emitted by the DRi rendering device (in a comfortable manner.

When the rendering device DR, is a screen, this screen can define a vertical direction and a horizontal direction, the horizontal direction may correspond to a longitudinal direction of the screen and the vertical direction may correspond to a transverse direction of the screen the horizontal direction being perpendicular to the vertical direction. The ED broadcast space of a screen is defined by the vertical viewing angle of the screen, i.e. the viewing angle in the vertical direction, and is defined by the angle of view. horizontal vision of the screen, that is to say the viewing angle in the horizontal direction.

The viewing angles of the screen are the maximum angles beyond which the image displayed by the screen is degraded, for example beyond which a sharp drop in contrast, a sharp drop in color fidelity, and / or a strong deformation of the image is observed.

When the rendering device DRi is a loudspeaker, the diffusion space EDj is the space within which the sound level allows an individual to hear the sound emitted by the loudspeaker intelligibly. The broadcast space ED of a loudspeaker is thus defined by a distance from the loudspeaker. The diffusion space ED, in addition to the distance, can be defined by angles, but these angles vary according to the frequencies of the sound reproduced, the acute frequencies being more directional than the low frequencies.

Each rendering device DR comprises a communication module able to receive commands from the control device 105, a memory, and a processor able to process the commands received.

In order to communicate with the communication unit 120 of the control device 105, the communication module can use a radio wave communication mode, for example by Bluetooth or Wi-Fi. In a variant, the communication mode used can be wired. .

Each OBj object comprises a processor, a memory storing the identifier IDS of the object OBj, and a communication module able to send the first signal SIG, and a second signal SIG2j.

The second signal SIG2 is, for example, a Bluetooth signal or a Wi-Fi signal. Thus, in order to communicate with the communication unit 120 of the control device 105, the communication module can use a radio wave communication mode, for example example, by Bluetooth or Wi-Fi. In a variant, the communication mode used may be wired. The object OBj may be a device capable of detecting the presence or absence of an individual, further comprising a presence sensor.

The presence sensor is for example a pressure sensor. Thus, the object OBi can be a chair or an armchair, the pressure sensor being positioned at the seat of the chair or the chair, so as to detect the presence or absence of an individual sitting on the chair. chair or chair.

Alternatively, the object OBj may be a part of the ground, for example a slab on the ground, which can be positioned under a chair or a chair, the pressure sensor detecting the presence or absence of an individual on the part of soil.

The presence sensor may be an infrared sensor, typically a low resolution infrared camera. The object OBj or the infrared sensor can be positioned on a ceiling, for example above a chair or an armchair. Object OBj can also be a part of ceiling.

Each object OBj can be fixed or mobile. By "fixed object" is meant an object OBj whose position POSj is fixed. The orientation of the object is not necessarily fixed, and can be modified.

As shown in FIG. 2, the control device 105 comprises a processor 210, a random access memory 220, a read only memory 230, and a communication module 240 capable of receiving the first and second signals SIGj, SIG2j transmitted by the different objects OBj and sending control commands to DRd rendering devices.

The ROM 230 constitutes a support according to the invention. It stores a PG computer program according to the invention whose instructions, when executed by the processor 210 implement the steps of the control method according to the invention and which will be described with reference to Figure 3 .

The read only memory 230 can store a localization table TAB of each reproduction device DRj and each object OBj in the reference frame R.

The table TAB may for example comprise three columns: a first column comprising the identifiers IDj of each object OBj and / or each rendering device DRj; A second column comprising the POSj positions of each object OBj and / or each rendering device DRj in the frame R; A third column comprising a binary indicator that can take a value 1 or 0 depending on whether or not the control device 105 has received a first signal SIGj from the object OBj indicating that it has detected the presence of an individual. This third column may also include a state of availability of each rendering device DRj, taking for example the form of a bit indicator taking a value of 1 or 0 depending on whether the rendering device DRj is used by the system, that is to say according to whether the playback device DRj is in the on state or in the off state, the off state corresponding to a state in which the rendering device DR is not able to restore a multimedia content.

The table TAB may further comprise a fourth column including the orientation of each DR | in the R mark.

In an exemplary embodiment, the bit indicators associated with the OBj objects are initialized to 0 in the TAB location table. They pass to the value 1 when the control device 105 receives a first signal GIS, from the object OB, indicating the detection of an individual and return to the state 0 when they receive a second signal SIG2, from the OB object, indicating the non-detection of an individual.

Similarly, in one example, the bit indicators associated with the DR rendering devices are initialized to 0 in the TAB location table. They go to 1 when the device sends a command with a start instruction to the DR rendering device, and returns to the 0 state when the control device 105 sends a command with a shutdown instruction.

The positions associated with the OBj objects are typically the positions where the faces of the individuals detected by the OB objects are likely to be. In the example where the object OBj is a chair or a chair having a seat having a pressure sensor, the position associated with the object OBj may be about fifty centimeters above the position of the pressure sensor. In the example where the pressure sensor is an infrared sensor, the position associated with the object OBj can be located at lm70 above ground level, in the coverage area of the infrared sensor.

When the POSj positions associated with the OBj objects or with the DR rendering devices are fixed (ground pressure sensor, pressure sensor in a fixed chair, fixed infrared sensor, fixed screen, fixed speaker), these positions may be recorded. in the TAB location table.

For objects associated with variable positions, as for a pressure sensor in a mobile chair for example, the current position associated with the POSj object is contained in the first SIGj message sent by this POSj object.

For DRS rendering devices associated with variable positions, such as for a screen or a mobile speaker, the current position associated with the rendering device DR is contained in a message sent by the rendering device DRj to the control device 105 .

The processor 210 is able to read the TAB location table to obtain the POS position associated with an OB object. The processor 210 and the table TAB thus constitute an exemplary locating unit 130 of the system 100 within the meaning of the invention.

In addition, the processor 210 and the communication module 240 constitute an example of a communication unit 120 within the meaning of the invention. In addition, the processor 210 and the communication module 240 constitute an example of a control unit 140 within the meaning of the invention.

FIG. 3 represents a method of controlling a set of content restoration devices comprising at least one content reproduction device, according to an exemplary embodiment of the invention.

The method is implemented by a control system of a set of rendering devices, for example the control system 100 described with reference to FIG. 1. Each content rendering device DR is located in a reference frame R.

In a step S300, the control device 105 receives a first SIG signal from at least one OB object. The first signal GIS, comprises an identifier ID, of the object OB ,.

In one example, several OB objects, each send a first signal SIG. Several first GIS signals are then received by the control system 100, each first GIS signal comprising the identifier ID of the object OBi having sent the first signal GIS.

In one example, the first GIS signal includes information relating to the presence of at least one individual. The object OB can indeed be a device capable of detecting the presence or absence of at least one individual, comprising a presence sensor. The object OB, then emits the first signal GIS, when the presence sensor detects the presence of at least one individual. The information relating to the presence of an individual is then intrinsic to the signal GIS. In addition, as described below, each object OB sends a second signal SIG2 when it detects the absence of at least one individual hitherto present, in other words the departure of at least one individual.

More specifically, when the object OBi is only able to detect the presence or the absence of a single individual (for example when the object is a chair or a chair), the object OBj emits the first signal GIS, when the presence sensor detects the presence of the individual and sends the second signal SIG2i when it detects the absence of the individual hitherto present.

When the object OBi is able to detect the presence or the absence of several individuals (for example when the object comprises an infrared sensor), the object OBj sends the first signal SIGj when the presence sensor detects the presence of at least one individual and sends the second signal SIG2, when it detects the absence of all the individuals whose presence has been detected by the OBj object that is to say that as long as an individual is present in the area covered by the object OBi, the second signal SIG2, is not sent.

The reception of the first GIS signal (s), and of the second or second GIS signal (s), makes it possible for the system 100 to constantly know all the OBj objects that detect the presence of at least one individual.

In a so-called location step S310, for each object OBj having emitted a first signal SIGj, a position POS, associated with the object OBj in the reference R is obtained by the control device 105. The position POSj is obtained from the first signal SIGj emitted by the object OBj.

Thus, during the location step S310, the location unit 130 of the control device 105 obtains or updates, from each first signal SIGj received from the different objects OBj, the set of all the POS positions associated with or OBj objects that detect the presence of at least one individual.

As previously described, the POSj positions may be included in the SIGj messages or read in the TAB location table.

In a first control step S320, for at least one POS position, obtained in the location step S310, at least one content reproduction device DRj among the set of content reproduction devices DRj is controlled by the device control 105, so that the playback device DR, content is in working order, and so that the broadcast space of the DR playback device, content covers said position POSj.

Thus, it is possible to control one or more DR rendering devices, so that at least one present and localized individual can comfortably see and / or hear the image and / or sound emitted by at least one DRi rendering device (.

As shown in FIG. 4, for at least one POSj position obtained at the location step S310, for example for each POSj position obtained at the location step S310, the control unit 140 of the control device 105 selects ( substep S422 of the control step S320) the reproduction device DRj to be checked.

Thus, only the DRj playback device necessary is controlled, so that the present and localized individual can see and / or hear, in a comfortable manner, the image and / or the sound emitted by this DRj playback device.

In one example, the rendering device DRj is selected from a subset of the set of rendering devices DRj comprising at least one rendering device DR, of the same type. In one example, each rendering device DRj of the subset of the set of rendering devices DRj is in the off state, and is therefore available. Furthermore, in one example, the rendering device DRj selected in the selection sub-step S422 is the reproduction device DRj of the subset of the set of rendering devices DRj closest to said POSj position.

In one example, when the rendering device DR is a screen, the broadcast space EDj of the screen covers said POSj position if the following inequality is satisfied (see FIG. 5):

in which: • R is the angle of rotation of the screen, • Z is the horizontal viewing angle of the screen, • Cix is the coordinate of the POSj position along the X axis of the R mark, • Ciy is the coordinate of the POSj position along the Y axis of the R mark.

Thus, in one example, each rendering device DR, of the subset of the set of rendering devices DR, verifies the inequality above.

In a first example, the set of reproduction devices DRj comprises several DR rendering devices, belonging to the same type of DR rendering device, said DRj rendering devices being fixed. The control unit 140 then determines whether at least one rendering device DRj of the reproduction device set DRj is not available, that is, if at least one rendering device DRj is in a state of restitution. walk. For this, the control unit 140 can consult the fourth column of the TAB table. If at least one of the unrecoverable playback devices DRj is set and oriented so that the broadcast space EDj of the rendering device DR, covers said POS position "this rendering device DR, is selected.

If none of the DRd rendering devices unavailable is positioned and oriented in this way, or if all DR rendering devices are available, the control unit 140 determines the DR rendering devices available from the device set. restitution DRj, that is to say, the DR restitution devices being in a stopped state. For this, the control unit 140 can consult the fourth column of the TAB table.

Then, the control unit 140 determines whether at least one available DR rendering device is positioned and oriented so that the broadcast space EDj of the DR rendering device covers said POS position.

If only one available DR rendering device is positioned and oriented so that the broadcast space ED, the DR rendering device covers said POS position, this rendering device DR is selected.

If a plurality of DR rendering devices are available and are positioned and oriented so that the broadcast space ED, of these DR rendering devices cover said POS position, the DR rendering device closest to said position is selected.

In a second example, the set of DR rendering devices comprises several DR rendering devices belonging to the same type of DRj rendering device, said DR rendering devices being mobile. The control unit 140 proceeds in the same manner as in the first example. Furthermore, if no available DR rendering device is positioned and oriented so that the broadcast space ED, of the rendering device DR, covers said POS position, the rendering device DR-, the closest to said POS position is selected.

In a third example, the set of reproduction devices DR, comprises several DR rendering devices, belonging to the same type of DR rendering device, at least one DR rendering device being fixed and at least one rendering device. DRj being mobile. The control unit 140 proceeds in the same manner as in the second example. In addition, if no mobile DRj playback device is available, the closest fixed playback DRj device is selected, unless a non-available DRj playback device is closer to said POSj position.

In a fourth example, the set of rendering devices DR comprises several rendering devices DRj belonging to different types of rendering devices DRj. The control unit 140 proceeds in the same manner as in the first, second or third example, for each different type of rendering devices DR 1. Thus, a screen and a speaker covering the same POS position, can be controlled.

If a rendering device DRj is selected in the substep S422, the control unit 140 determines (substep S424) the command to be sent to said rendering device DRj determined in the substep S422.

If the playback device DR, selected covers said position POSj and is available, the playback device DR, can be put into operation. The command determined by the control unit 140 then comprises a commissioning instruction.

If the playback device DR, selected does not cover said POS position, and is fixed, the playback device DRj can be put into operation. The command determined by the control unit 140 then comprises a commissioning instruction.

If the playback device DR, selected does not cover the position and the playback device DR, is movable, the playback device DR, can be set to work and moved so as to cover the POS position. The command determined by the control unit 140 then comprises a start command and a move command.

The control may further comprise an instruction for modifying the orientation of the rendering device DR ,, that the rendering device DR is either fixed or mobile.

When the rendering device DR is a screen, the orientation can be changed by changing the horizontal tilt angle of the screen and / or by changing the vertical tilt angle of the screen so as to cover said POS position ,. The control unit 140 then sends (substep S426) the command determined in the substep S424 to the device selected in the substep S422. The control unit 140 further indicates to the system 100 that the selected DR rendering device is not available. For this, the control unit 140 can update the fourth column of the TAB table. Upon receipt of the command, the selected DR rendering device processes the command in order to execute it.

It is thus possible to control one or more DR rendering devices, so that all present and localized individuals can comfortably see and / or hear the image and / or the sound emitted by at least one device. of restitution DRi ;. Indeed, in one example, the first control step S340 is performed for each POS position, obtained at the location step S310.

The control method may further comprise a second reception step S330, by the control device 105, of a second signal SIG2 coming from at least one object OB, comprising the identifier ID, of the object OB , and information about the absence of an individual hitherto present.

More precisely, when the object OB is only able to detect the presence or the absence of a single individual (for example when the object is a chair or a chair), the object OB sends the second signal SIG2. | when he detects the absence of the individual hitherto present.

When the object OB, is able to detect the presence or the absence of several individuals (for example when the object comprises an infrared sensor), the object OB, sends the second signal SIG2, when it detects the absence of all the individuals whose presence has been detected by the object OBi, that is to say that as long as an individual is present in the zone covered by the object OB, the second signal SIG2 is not not sent.

In addition, the control method may comprise a second step S340 for controlling at least one DR rendering device, among the set of DR rendering devices, the DR rendering device, having an ED broadcast space, covering the POS position associated with the object OBi having sent the second signal SIG2j.

In one example, on receiving the second signal SIG2j, the control unit 140 determines the position POS, associated with the object OB ,, for example by consulting the table TAB using the identifier IDj of the second signal SIG2i. Then, the control unit 140 determines which reproduction device DR, comprises a diffusion space EDi covering the position POS position. The control unit 140 then determines the command to be sent to the DR rendering device, determined, and sends the command to the DR rendering device, determined. In one example, the command includes a shutdown instruction. The control unit 140 further indicates to the system 100 that the determined DR rendering device is available. For this, the control unit 140 can update the fourth column of the TAB table. On receipt of the command, the determined DRj rendering device processes the command in order to execute it.

Claims (13)

1. A method of controlling a set of content rendering devices (DR,) comprising at least one content reproduction device (DR), each content reproduction device (DR) being located in a reference frame (R). ), the method comprising: a reception step (S300) originating from at least one object (OBj) of a first signal (SIGj) comprising an identifier (ID) of said object (OBi); a location step (S310) making it possible to obtain for each object (OBi) that has transmitted a first signal (SIG), and from said first signal (SIGi), a position (POSj) associated with said object (OBj) in said reference (R); a first step of controlling (S320) at least one content rendering device (DRj) among the set of content rendering devices (DR), so that said at least one rendering device (DR, ) of content is in working order, and so that the broadcast space (ED) of said at least one content rendering device (DRj) covers at least one position (POS) obtained at the location step (S310). 2. The method of claim 1, wherein said first signal (GIS) includes information relating to the presence of at least one individual. 3. Method according to claim 1 or 2, further comprising a second receiving step (S330), from at least one object (OBi), a second signal (SIG2) having the identifier (IDj). said object (OBi) and information relating to the absence of at least one individual hitherto present. 4. The method of claim 3, further comprising, for each second signal (SIG2i) received, a second control step (S340) of at least one device for rendering (DR) content among the set of rendering devices. (DR) of content, the broadcast space (EDO of each rendering device (DRO controlled content during said second control step (S340) covering the position (POSO associated with said object (OB)) having sent said second signal (received SIG20, the second control step comprising for example a substep of determining a command to send, said command comprising a shutdown instruction. 5. Method according to any one of claims 1 to 4, wherein the first control step (S320) comprises a substep selection (S422) of a reproduction device (DRO to control, in which the device of restitution (DRO is selected from a subset of the set of rendering devices (DRO with at least one rendering device (DRO of the same type. 6. The method of claim 5, wherein each rendering device (DRO of the subset of the set of rendering devices (DRO is in the off state. The method of claim 5 or 6, wherein the rendering device (DRO selected in the selection sub-step (S422) is the device of the subset of the set of rendering devices (DRO located nearest position (POSO- The method according to any one of claims 5 to 7, wherein the first control step (S320) comprises a substep of determining a command to be sent to the rendering device (DRO selected in the substep of selection (S422), said command including a readiness command, a move instruction, and / or an orientation change instruction. 9. A method according to any one of claims 1 to 8, wherein said rendering device (DRO is a display screen, the broadcast space (EDO of the screen being defined by the horizontal viewing angle of the screen and the vertical viewing angle of the screen. 10. A control device (105) for a set of content rendering devices (DR,) comprising at least one content reproduction device (DR), each content reproduction device (DR) being located in a device. reference (R), said device comprising: - a communication unit (120) capable of receiving, from at least one object (OB, ·), a first signal (SIG,) comprising an identifier (IDj) of said object (OB,); a locating unit (130) capable of obtaining for each object (OB) having emitted a first signal (SIG), and from said first signal (SIG), a position (POS) associated with said object (OB); in said reference (R); a control unit (140) capable of controlling at least one content reproduction device (DR) of one of the plurality of content rendering devices (DRi), so that said at least one reproduction device (DR, ) of content is in working order, and so that the broadcast space (ED) of said at least one content rendering device (DR) covers at least one position (POSj) obtained by the location unit (130). 11. Control system for a set of content rendering devices (DR,) comprising at least one content reproduction device (DR), said system comprising: a control device according to claim 10, said set content reproduction devices (DR), and - at least one object (OB) configured to transmit at least one first signal (SIGj) comprising an identifier (IDj) of said object (OB) to said control device. A computer program (PG) comprising instructions for executing the steps of the checking method according to any one of claims 1 to 9 when said program is executed by a computer. A computer-readable recording medium (230) (105) on which a computer program (PG) is recorded including instructions for performing the steps of the checking method according to any one of claims 1 to 9.