FR2943438A1 - METHOD AND SYSTEM FOR SYNCHRONIZED DIFFUSION OF COMPLEMENTARY MEDIA ON MULTIPLE DIFFUSION DEVICES - Google Patents

Abstract

A method of synchronized broadcasting of complementary media on a plurality of broadcast devices connected to a control unit via a connection network, the method comprising the steps of: - defining (S1) a set of parameters comprising: a given number of receiver device (s) located on the network by an address, each receiver device being associated with at least one media broadcasting device, the set of receiver and diffusion devices constituting an environment, the environment comprising at least two broadcasting devices, and read tracks each comprising a time window identifying a medium with respect to a time line, at least one reading track being associated with a broadcasting device; for each reading track associated with a broadcasting device, transmission (S3) by the control unit to the associated receiver device, instructio ns intended to be interpreted by said receiving device to broadcast the media on the media broadcasting device associated with the playback track, the instructions being issued at times determined according to the time window of the media.

Description

GENERAL TECHNICAL FIELD The present invention relates to a method and a system for synchronized broadcasting of complementary media on several broadcasting devices.

More specifically, it relates to the broadcast synchronization of complementary media, on several devices connected to a connection network, by issuing synchronized instructions from a central unit.

STATE OF THE ART

Synchronized media broadcasting systems are known in the prior art. In particular, it is more and more common to use two screens as support for the broadcasting of complementary videos in a synchronized manner.

This recent technology has applications in many fields, such as the arts community, the organization of courses and conferences, education, market research and / or creativity, and interior design. or outside.

According to the prior art, it requires the use of specific software, for example a computer program implemented by a central computer. The media, for example videos, are stored in a memory of the central computer and directly broadcast by a wired network on several screens, usually two.

However, this technique has disadvantages, in particular that the broadcast is limited by the bandwidth of the central computer bus and that of the network. It is therefore difficult to broadcast a large number of videos in a synchronized manner, and even more so if it is high definition video.

Certain devices specially built for synchronized broadcasting make it possible to overcome this difficulty. These are supercomputers with very high bandwidth networks that allow videos to be streamed synchronously across a large number of screens. However, these supercomputers are very expensive to invest.

In addition, prior art systems for synchronized media delivery require extensive video and / or programming knowledge which makes them difficult for many potential users to access.

PRESENTATION OF THE INVENTION The invention proposes to overcome at least one of these disadvantages. To this end, the invention proposes a method for synchronized broadcasting of complementary media on several broadcasting devices connected to a control unit via a connection network, the method comprising the steps of: - definition of a set of parameters comprising: a given number of receiver device (s) located on the network by an address, each receiving device being associated with at least one media broadcasting device, the set of devices receiver (s) and broadcasting constituting an environment, the environment comprising at least two broadcasting devices, and play tracks each comprising a time window identifying a media with respect to a time line, at least one reading track being associated with a broadcasting device, - for each reading track associated with a broadcasting device, transmitted by the control unit to the device associated receiver, instructions to be interpreted by said receiving device to broadcast the media on the media broadcasting device associated with the playback track, the instructions being issued at times determined according to the time window of the media The method according to the invention is advantageously completed by the following characteristics, taken alone or in any of their technically possible combinations: the step of defining a set of parameters is carried out by a user via a user interface using simple commands; the method further comprises a step of storing the target media of at least one read track in a memory of a receiving device; the method further comprises a step of storing parameters of the set of parameters in a central memory of the control unit, the set of parameters further comprising sharing parameters defined during the definition step; The method further comprises a step of access to parameters of an internal set of parameters by a user, the access step comprising the following substeps: entry of an identifier by a user via an interface user, verification of the identifier by the control unit and, if the identifier 20 is authentic, visualization of a visual representation of parameters of said initial set of parameters by the user through the user interface; the set of parameters is defined on the basis of parameters of an internal set of parameters contained in a central memory of the control unit; the internal parameter set further comprises sharing parameters describing conditions in which a user can access parameters of the internal parameter set during the access step and define a parameter set from parameters of the parameter set; internal parameter set 30. the environment further comprises an interaction device associated with a detection module, and in which the defined set of parameters further comprises an interaction track associated with an interaction device and comprising an interaction window, the method further comprising the steps of: detecting, by an interaction device, a specific event associated with the interaction window, and sending by the detection module to the control unit, detection information corresponding to the specific event; the method further comprises a step of modifying, by the control unit, the set of parameters as a function of the detection information and of the interaction window, the modification possibly relating to at least one of the following parameters; : a broadcasting device associated with a reading track; a time window; a course of the time line.

The invention also proposes a synchronized media broadcasting system characterized in that it comprises a given number of receiver device (s) connected (s) to a control unit via a connection network each receiving device being associated with at least one media broadcasting device, the set of receiver and diffusion devices constituting an environment, the environment comprising at least two broadcasting devices the system further comprising means for implementation of the method according to the invention.

The invention also relates to a computer program product comprising code instructions recorded on a medium that can be used in a computer, characterized in that it comprises instructions for implementing the method according to the invention.

The invention has many advantages. The invention makes it possible to orchestrate the synchronized diffusion of media without investing in an expensive installation.

The invention also allows a user to orchestrate the synchronized broadcast of complementary media without having a deep knowledge of programming or audio-visual. The invention also allows interactive synchronized broadcasting of 5 complementary media.

PRESENTATION OF THE FIGURES Other characteristics, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and nonlimiting, and which should be read with reference to the appended drawings, in which: FIG. the form of a block diagram a method of synchronized broadcasting of complementary media according to a possible embodiment of the invention; FIG. 2 schematically shows a synchronized diffusion system 15 of complementary media according to one embodiment of the invention; FIG. 3 shows an example of a visual representation of parameters of a set of parameters according to one embodiment of the invention, in which the environment comprises two receiving devices; FIG. 4 shows an example of a visual representation of parameters of a set of parameters according to one embodiment of the invention, in which the environment comprises two receiving devices and detection modules.

25 DETAILED DESCRIPTION

The invention aims to allow the orchestration of a synchronized broadcast of complementary media on several broadcast devices.

With reference to the system according to a possible embodiment of the invention shown in FIG. 2, the broadcasting devices 10, 11, 20, 21 are associated with receiving devices D1, D2 connected by a connection network N to a unit C control.

The diffusion devices are thus connected to the unit C via the network N and the receiving devices.

The network N is for example the Internet network, or a local wired or wireless network, or any other network known to those skilled in the art.

The devices D1, D2 are located on the network N by an address, for example an IP address.

The unit C and the receiving devices D1, D2 preferentially comprise processors respectively referenced 50, 12, 22 for managing the communication between them, and network connection ports respectively referenced 52, 14, 24.

In the following, we designate by environment all receivers and devices diffusion.

According to the invention, the environment comprises at least two diffusion devices.

Receiving devices, whatever their number, will be used. Those skilled in the art will understand, however, that the invention also extends to an environment comprising a single receiver device 25 connected to a plurality of broadcast devices.

With reference to FIG. 1, a method for synchronized broadcasting of complementary media according to the invention mainly comprises a step S1 of defining a set of parameters, and a step S3 of issuing instructions i2, by the unit C, to the devices D1, D2 receivers. Steps S0, S2, and S4 to S6 will be described later with reference to variants of the invention.

Step S1 consists of the definition of a set of parameters, that is, the preparation of synchronized media broadcasting.

The set of parameters, referenced PS in the following, comprises the number of receiving devices of the environment and their associated broadcasting devices, and read tracks associated with broadcasting devices. The reading tracks provide for the dissemination of complementary media on several devices for the diffusion of the environment.

Step S3 consists in issuing instructions towards the receiving devices of the environment as a function of the set PS defined during step S1, so as to carry out synchronized broadcasting of the complementary media.

The set of parameters will be described in more detail with reference to FIG. 3. Advantageously, step S1 may be implemented by a user U via a user interface 40.

The interface 40 preferably comprises a display screen 41 and an interaction means 42 such as a keyboard or a computer mouse, a touch screen or any equivalent means.

The interface 40 may be connected to the unit C via the network N as shown in FIG. 2. The interface 40 then preferably comprises a processor 43 for managing the interactions with the unit C, and a port In this case, the step S1 can be implemented by a user U remote from the unit C, for example by an Internet user from his home. 10 20

Preferably, the user U must provide an identifier to connect to the unit C and perform the step S1 PS game definition.

The identifier may be a user name coupled to a password for example.

Alternatively, the interface 40 may be integrated with the unit C via another connection network (not shown), for example a local area network.

Alternatively again, the interface 40 may be integrated with the unit C (not shown).

The user U can then visualize a visual representation PL of the PS set of parameters. An example of a visual representation is shown in Figure 3.

The PS game comprises the given number of receiving devices and broadcast devices associated with each receiving device. The nature of the visual or sound diffusion devices is also defined during the step S1.

The broadcasting devices may be display screens, loudspeakers, telephones or televisions, or any broadcasting device, in particular a visual or sound device, known to those skilled in the art that can be connected via a receiving device to a connection network.

The PS game also includes playback tracks, at least one of which is associated with a device for broadcasting the environment.

For example, the game PS may comprise a track L1 associated with the device 10 and a track L2 associated with the device 20.

Preferably, but not exclusively, distinctive signs associated with each track indicate which receiver device the track is associated with, for example, the IP address quelle and what is the nature of the associated broadcast device, for example vision for a visual broadcast device. and sound for a sound broadcasting device.

Each reading track L1, L2 defined during the step S1 comprises, according to the invention, a time window f1, f2 identifying a medium m1, m2 with respect to a line TL of time.

The time windows f1, f2, are shown hatched in FIG.

For example, the media m1 may be a video presenting images of works of art to be broadcast on the device 10, and the media m2 may be a series of slides containing comments on said works.

In general, the media may be videos, still images, soundtracks, slides, or any other type of media known to those skilled in the art.

Preferably, the user U can choose the duration of display of a still image. It is therefore crucial that the distribution of these complementary media be synchronized.

The instructions for the broadcast of the additional media are transmitted during the step S3 to the associated receiver devices, at times determined by the time windows defined during the step S1. According to a variant of the invention, the time windows f1, f2 define reading start marks t1, t2 on the line TL of time,

The line TL is traversed, for example from a reference mark t0 and the instructions 11, respectively i2, are issued when the mark t1, respectively t2, is reached.

For each reading track, the instructions are sent to the receiving device located on the network N by its address. The instructions are intended to be interpreted by the receiver device, preferably at the level of a processor, to broadcast the associated media.

A playback track may contain a plurality of time slots associated with media, in which case several instructions will be sent based on the read start marks on the TL line.

The instructions include an identifier of the associated media, so that the receiving device identifies the media to be broadcast.

The instructions may include optional but non-limiting information such as loopback information. The broadcast of the media will then be repeated, unless a new instruction is received by the associated receiver device.

According to an advantageous variant of the invention, the game PS is defined by the user U via the user interface 40 with the aid of simple commands.

Simple commands are commands that do not require programming. Preferably, step S1 may be performed entirely using a computer mouse and a computer keyboard or using a touch screen 20. As a non-limiting example, the simple commands may include: - the choice of commands in a list displayed on a screen of the user interface 40 by computer mouse clicks, - the positioning of time windows with respect to the TL line using of functions for positioning an object on a screen by means of a computer mouse known to those skilled in the art, - the input of numerical parameters (number of receiving device (s) and environment broadcast devices) in areas indicated on a screen of the user interface 40 - the choice of the nature of broadcast devices from a list of choices.

For example, the time slots can be arranged on the read tracks with the aid of a mouse click, and the media can be selected by searching a file in a memory 51 of the unit C. The invention thus allows the access to state-of-the-art technology to users without any need for computer programming or audio-visual knowledge.

The user simply has to choose which media he wishes to broadcast in a synchronized manner and by simple commands.

According to an advantageous variant of the invention, a storage step S2 of the media ml, m2 is also provided on the associated receiver devices D1, D2.

This step is highly advantageous, although optional. Indeed, it is not necessary if the media are already stored on the associated receiver devices. The media are preferably transmitted to the receiving devices via the network N for storage S2. It can be provided to store each medium ml, m2 on its associated receiver device D1, D2, or on several receiving devices. According to a variant of the invention, it is planned to store all the media on all the receiving devices in anticipation of changes to the set of parameters that will be discussed below.

According to one variant of the invention, the storage step S2 ends, for all the media, before the first transmission S3 of instructions.

Thus, the media are already stored before the start of the broadcast. This eliminates the problems of shifts induced in the case where the bandwidth of the network N is insufficient.

According to another variant of the invention, a partial storage S2 of the media is carried out before the first transmission S3 of instructions. Thus, the media is transmitted by the network N to the receiving devices during the broadcast, which allows to start synchronized broadcasting earlier. This variant is particularly interesting but depends on the bandwidth of the network N, which must be sufficient to support the sending of media without inducing a shift in the broadcast.

To avoid inconvenience to the user U, according to one embodiment of the invention, an N-band bandwidth test is provided depending on the environment, allowing the user to know whether to predict a storage S2 of the total or partial media before the S3 issue of instructions.

Such bandwidth tests are known per se and are not described further. A variant of the invention will now be described in which a user can record a set of parameters defined during step S1 and make it available to other users.

The method according to this variant of the invention comprises a storage step S2 'PS game parameters in the memory 51 of the unit C, in the form of a set PSO internal parameters.

For example, the user can store the PS game integrally, or partially, for example by excluding the address of the receiving devices on the network. In the following, we will indifferently designate by a set of stored parameters a set of parameters stored wholly or partially.

Preferably, but not exclusively, the stored parameter set is identified by a parameter set name.

Thus, the memory 51 includes sets of internal parameters stored by users. Preferably, the memory 51 also includes default internal parameter sets. These sets of internal parameters can be consulted by users according to the variant of the invention described below.

The method advantageously comprises an access step SO to parameters of a PSO set of internal parameters stored in the memory 51. To do this, the user U transmits, during an identification step S01, an identifier K to the unit C via the interface 40. The identifier can be the same as that necessary to connect to the unit C, but not necessarily.

The identifier K is then verified by the unit C during a verification step S02, preferably at the level of the processor 52.

If the identifier is authentic, the user U visualizes a visual representation PLO PSO game parameters on the screen 41 during a step S03 visualization. The PLO visual representation may represent the entirety of the parameters of the PSO game or a part, for example only the PSO game readout tracks.

Authentic identifier means an identifier certifying that the user is authorized to access the PSO game. Preferably, the identifier K comprises a username coupled to a password, and the verification step S02 comprises a comparison of this pair with pairs stored in the memory 51 of the unit C.

An authorized user U can then modify the PSO set and define, in the step S1, a set PS from a set of parameters of the set PSO of internal parameters contained in the central memory 51 of the unit C .

The parameter sets can thus be shared and modified to suit different environments.

Advantageously, the game PS may contain sharing parameters, that is to say parameters describing the conditions in which it can be shared. In a nonlimiting manner, the sharing parameters may comprise: an access authorization, if the user U wishes that other users can have access to the game PS. The access authorization may concern certain users designated by their username, or a user group. Preferably, the identifier K then comprises a membership information to a user group, - a modification authorization, if the user U wishes that other users can modify the PS game and define other sets of parameters 10 based on the PS game. The change permission may affect some parameters, but not all. In particular, the user U can impose sharing parameters to any user wishing to define sets of parameters from the game PS - a broadcast authorization, if the user U wishes that the game PS is broadcast publicly or in a restricted way. - legal notices of use describing the legal conditions under which other users may use the PS game, in particular for commercial purposes.

Thus, a user can share a PS game that he has created with other users based on sharing settings that he himself has chosen and legally protect against misuse of the PS game. A variant of the invention will now be described allowing interactive synchronized broadcasting of complementary media.

Synchronized interactive broadcasting is understood to mean synchronized broadcasting coupled with interactions with the outside world.

According to this variant of the invention, the environment further comprises a detection module D3 associated with at least one detection module 31, 32 and located on the network N and able to communicate with the unit C Preferably, the module D3 comprises a processor 33 for managing communications with the unit C, and a port 34 for connection to the network N.

The detection module can also be connected to the unit C by another connection network, or else integrated into the unit C.

Alternatively, the detection devices can be integrated with a receiving device D1, D2. 25

The invention is readily adaptable to the above variants, as will be understood by those skilled in the art in light of the description below.

The detection module D3 is intended to interact with the outside world and to detect specific events E.

The module D3 comprises for example a device 31 for active interaction with a user allowing a person P to interact with the system 10 according to the invention.

By way of nonlimiting example, an interaction device 31 can comprise a computer mouse, a computer keyboard, a microphone, a touch screen, or any other means known to those skilled in the art allowing a person P interacting actively with the system according to the invention.

The module D3 may also comprise a sensory detector type interaction device 32, such as a presence or motion sensor, or a sound sensor, all these sensors being known to those skilled in the art.

In general terms, sensory detector means a device capable of implementing a capture of sensory information, for example visual, sound, olfactory or tactile. The module D3 is able to send DI information of detections to the unit C according to the interactions of the devices 31 and 32.

With reference to FIG. 4, the set PS defined during step S1 advantageously comprises at least one interaction track 11, 12 associated with an interaction device 31, 32. Each track 11, 12 comprises an interaction window e1, e2 corresponding to the specific events E detectable by the associated interaction device 31, 32.

The method then advantageously comprises a detection step S4 by an interaction device 31, 32, a specific event E associated with an interaction window e1, e2, and a transmission step S5, by the module D3 to destination of the unit C, a detection information DI corresponding to the specific event E detected.

The specific events E are thus interactions that the user U has provided by defining interaction windows e1, e2 during the step S1.

For example, the media m2 may be a succession of questions concerning the media ml, and the window f2 may be associated with a window el on the track 11, corresponding to the collection of the answers to the questions via the device 31.

This variant is particularly advantageous for coupling the synchronized diffusion with a collection of information, as will be described later in the examples.

The window e1, e2 also marks the activation of the detection function by the device 31, 32 associated with the time line. Apart from the time markers delimiting the window with respect to the time line, the associated device will not transmit detection information DI to the unit C.

For example, it can be expected to collect presence information by a presence sensor 32 only over a given time range with respect to the broadcast.

The tracks 11, 12 of interactions are preferentially defined by a user U with the aid of simple commands, analogously to the reading tracks.

According to a variant of the invention, the set PS is defined in step S1 so as to be modified by specific events E.

For this purpose, the method advantageously comprises a modification step S6, by the unit C, of the set PS as a function of the detection information DI and of the associated interaction window e1, e2.

The associated window e1, e2 interaction means the window providing the specific event E inducing the transmission of a detection information. According to one embodiment of the invention, the modification step S6 comprises a modification S61 of a broadcasting device associated with a read track, the destination of the receiving device being modified accordingly. For example, the track L1 may be associated with the device 20, and conversely the track L2 with the device 10.

In this example, the detection has the effect of inverting the broadcast media respectively on the devices 10 and 20.

It is also possible to associate a playback track with a broadcast device when it was not before receiving the detection information. Thus, the user U can define waiting read tracks, which will be associated with broadcast devices only in case of detection of a specific event. 15 30

Step S6 may also concern a modification S62 of a window f1, f2 temporal of a track L1, L2 of reading.

For example, a time window f1, associated with a medium m1, can be changed for another time window associated with another medium.

Preferably, but not exclusively, the read start mark of the new time window is the same as that of the previous time window.

In this example, it is expected that the detection has the effect of changing a broadcast media on a broadcast device.

According to the invention, step S6 may also relate to a path of the time line TL.

Thus, step S6 can be used to go back on the timeline and resume sending commands from a time mark, for example from the reference mark.

It is also possible in step S6 to advance with respect to the timeline and to skip time windows on read or interaction tracks. The invention also relates to a computer program product comprising code instructions recorded on a medium that can be used in a computer, for example on the unit C, comprising instructions for carrying out the method according to the invention. For this purpose, the inventor has developed a language comprising commands for generating instructions i2 and collecting information from interaction devices 31 and sensory sensors 32. 25

The invention thus makes it possible to juxtapose interaction devices, for example of the computer keyboard type, and sensory detectors.

The computer program product has been written in XML format to be compatible with a large number of currently used operating systems.

Thus, the invention allows users to connect across a network such as the Internet to the C-unit and orchestrate a synchronized broadcast of complementary media.

All that is required is that: the user has a receiver device D1 with an operating system compatible with the XML format, which is the case for most commercial operating systems, and the receiving device is associated with a media broadcasting device and provided with a media player.

Preferentially, but not exclusively, the media player reads a large number of different media formats. The system according to the invention thus has independence vis-à-vis the format of the media to be broadcast.

Examples of application of the invention will now be described. Example 1: Product design meeting within a company, 5 participants.

In this example, the environment comprises seven broadcast devices, namely: - five screens, one for each participant in the design meeting, each associated with a receiving device consisting of a computer said participant computer, and 25 - two video projectors, whose projected image is visible to all participants, each associated with a receiving device consisting of a computer.

Participating computers further include interaction devices 31, namely computer keyboards and microphones.

These computers are therefore, in the context of the invention, both receiver device and detection module. Before the meeting the user, the meeting facilitator, defines a PS set of parameters.

For this purpose, it connects to the unit C via a user interface 40 consisting of a laptop, and defines the environment, then a reading track associated with each projector and an interaction track associated with each participating computer. .

The user plans to project images of existing products by a first projector, and on a second projector the consumer opinions of existing products, in a synchronized manner within the scope of the invention.

The user also plans, by defining the interaction tracks, that the inputs at the keyboards and microphones of the participating computers are directly recorded on his laptop.

The synchronized images stimulate the inventiveness of the participants who write their ideas on the keyboards or dictate them in the microphones. These 30 ideas will be used to define a new product over existing products.10 User U saves the PS set on unit C, and sets the sharing parameters.

It allows all members of its service to access it and use it as a basis for defining new sets of parameters.

It prohibits the use of the PS game for commercial purposes outside the users of its service

10 Example 2: Remote interactive course, ten students

In this example, the environment comprises: two broadcasting devices, namely a television screen associated with a receiving device consisting of a processor connected to the Internet and a video projector associated with a receiving device consisting of a computer connected to Internet, and - ten interaction devices, namely ten touch screens, all associated with a single receiving device consisting of a computer also connected to the Internet. User U is a teacher who prepares a class which he can not attend in person.

The user U defines a PS set of parameters.

To do this, it connects to the unit C via the Internet via its personal computer, and defines the environment, then a playback track associated with each broadcasting device and an interaction track associated with each touch screen.

The user plans to broadcast, on the television screen, a video representing him in the process of addressing the students. On the screen of the projector, the user plans to project slides constituting a course medium.

Thus, students attend a course with a visual representation of the teacher and course materials, synchronized according to the invention.

During the video, the teacher proposes questions to students who respond via their touch screen in time ranges provided by the teacher during the definition of the interaction tracks. The answers are sent directly to the teacher. teacher's personal computer that can analyze them remotely.

This application of the invention allows a teacher to teach courses to students as far as the Internet reaches, regardless of geographical boundaries.

Example 3: creation of artistic work

In this example, the environment comprises: - three broadcasting devices, namely two screens and a speaker associated with a single receiving device consisting of a computer connected to the Internet, and - an interaction device, namely a motion detector disposed near the loudspeaker, associated with the same receiver device.

User U is an artist who prepares an audiovisual work. The user U defines a PS set of parameters.

For this, it connects to the unit C via a user interface 40 consisting of its personal computer, and defines the environment, then a read track associated with each broadcast device, and an interaction track associated with movement detector.

The user U provides, by defining the playback tracks, to broadcast synchronously according to the invention, videos of light forms on the screens and a sound track on the speaker, the three complementarily forming an artistic work .

In addition, the user U provides, by defining the interaction track, that when the motion detector detects a presence near the loudspeaker, the videos broadcast on each of the screens are reversed.

It saves the PS set of parameters on the C drive and sets the sharing parameters. It allows all users in its artistic community to use and edit it.

It forces all users who defined a set of parameters from its PS game to set the same sharing parameters.

Thus, any artistic work created from his own will have to be shared with users who are members of his artistic community. 15

Claims (11)

REVENDICATIONS1. A method of synchronized broadcasting of complementary media on a plurality of broadcast devices connected to a control unit (C) via a connection network (N), the method comprising the steps of: - defining (S1) a set (PS) of parameters comprising: a given number of device (s) (D1, D2) receiver (s) located on the network (N) by an address, each receiving device being associated with at least one device ( 10, 20), the set of receiver and diffusion devices constituting an environment, the environment comprising at least two broadcasting devices (10, 20), and tracks (L1, L2) of reading each comprising a time window (fi, f2) identifying a medium (m1, m2) with respect to a time line (TL), at least one reading track being associated with a broadcasting device (10, 20), for each playback track (L1, L2) associated with a broadcast device (10, 20), transmission (S3) by the control unit (C) to the associated receiver device (D1, D2), instructions (i1, i2) to be interpreted by said receiver device to broadcast the medium (m1, m2) on the media broadcasting device (10, 20) associated with the playback track (L1, L2), the instructions being transmitted at times determined according to the time window (f1, f2) of the medium. 2. Method according to the preceding claim, wherein the step of defining (Si) a set (PS) of parameters is performed by a user (U) via a user interface (40) using simple commands. 3. Method according to one of the preceding claims, further comprising a step of storing (S2) the target media (m1, m2) of at least 2530 a track (L1, L2) reading in a memory (13, 23). ) of a receiver device (D1, D2). 4. Method according to one of the preceding claims, further comprising a step of storing (S2 ') parameters of the set (PS) of parameters in a central memory (51) of the control unit (C), the set (PS) parameters further comprising sharing parameters defined during the defining step (Si). 5. Method according to one of the preceding claims, further comprising an access step (SO) to parameters of a set (PSO) of internal parameters by a user, by a user (U), the step ( SO) of access comprising the following substeps: - input (S01) of an identifier (K) by a user (U) via a user interface (40), - verification (S02) of the identifier (K) ) by the control unit (C) and, if the identifier is authentic, - visualization (S03), a visual representation (PLO) of parameters of said initial set of parameters (PSO) by the user (U) through the user interface (40). 6. Method according to one of the preceding claims, wherein the set (PS) of parameters is defined (Si) from parameters of a set (PSO) of internal parameters contained in a central memory (51) of the control unit 25 (C). The method according to one of the preceding claims, wherein the internal parameter set (PSO) further comprises sharing parameters describing conditions in which a user can access parameters of the internal parameter set (PSO) at During the access step (SO) and define a set (PS) of parameters from parameters of the game (PSO) of internal parameters. 8. Method according to one of the preceding claims, wherein the environment further comprises an interaction device (31, 32) associated with a detection module (D3), and wherein the set of parameters (PS) is defined. (Si) further comprises an interaction track (I1, 12) associated with an interaction device and comprising an interaction window (e1, e2), the method further comprising the steps of: - detecting (S4) by a device (31, 32) for interaction, a specific event (E) associated with the interaction window (el, e2), and - transmission (S5), by the detection module (D3) at destination of the control unit (C), a detection information (DI) corresponding to the specific event (E). The method according to the preceding claim, further comprising a step of modifying (S6), by the control unit (C), the set of parameters (PS) as a function of the information (DI) of detection and detection. the interaction window (el, e2), the modification (S6) possibly relating to at least one of the following parameters: - (S61) a broadcasting device associated with a reading track; - (S62) a temporal window (f1, f2); 20 - (S63) a course of the line (TL) of time. 10. Synchronized media broadcasting system characterized in that it comprises a given number (n) of device (s) (D1, D2) receiver (s) connected (s) to a control unit (C) by the intermediate of a connection network (N), each receiving device being associated with at least one media broadcasting device (10, 11, 20, 21), all the receiving devices (D1, D2) and diffusion (10, 20) constituting an environment, the environment comprising at least two diffusion devices, the system further comprising means for carrying out the method according to any one of claims 1 to 9. 11. Computer program product comprising code instructions recorded on a support usable in a computer, characterized in that it comprises instructions for the implementation of the method according to one of claims 1 to 9.5