WO2013178916A2

WO2013178916A2 - Local server for display device

Info

Publication number: WO2013178916A2
Application number: PCT/FR2013/051158
Authority: WO
Inventors: Frédéric BEAUCHAMP; David Vincent
Original assignee: Tdf
Priority date: 2012-05-29
Filing date: 2013-05-24
Publication date: 2013-12-05
Also published as: FR2991537A1; WO2013178916A3; EP2856302A2

Abstract

The invention relates to a method of establishing a session between a display device (1) and a local server (2) of a current local network (5), the method being implemented in a remote server (4) able to communicate with the display device. The remote server being able to store in association at least one local network public identifier with a local address of a local server, the method comprises the steps: - on receipt at the remote server of a local session establishment request from the display device, the request comprising a public identifier of the current local network, determining whether the public identifier of the current local network is associated with a local address of a local server in the remote server, and - if the public identifier of the current local network is associated with a local address of a local server in the remote server, despatching to the display device the local server local address associated with the public identifier of the local network, with a view to the establishment of a local session between the display device and the local server.

Description

Local server for display device

The present invention relates to the field of controlling display devices via a third-party device.

More specifically, it relates to control applications for televisions, in particular television sets compatible with the HbbTV standard (for "Hybrid broadcast broadband Television"). The HbbTV standard, version 1 .1 .1 of which was approved by the ETSI (European Telecommunications Standards Institute) as ETSI TS 102 796 in June 2010, allows the combination of broadcast services ) with services via broadband ("broadband" in English) and also allows access to the Internet for users of connected terminals.

Nowadays, digital content display devices such as televisions generally access digital data streams via a network access point, which may be a wired or wireless access point, such as a Box. ADSL for example, allowing to gather a plurality of functionalities (access to TNT channels, telephony, Internet, access to video-on-demand servers).

A user of the display device can further access the internet server by means of a control device that can be a smartphone or a digital tablet for example belonging to the local network. The controller may have a user interface for fast text input (touch pad input on a tablet, so that the user can control the display device via the control device via the server Internet.

However, the transit of commands by the Internet server considerably slows the exchanges between the control device and the display device and thus reduces the responsiveness of the system.

The present invention improves the situation.

A first aspect of the invention relates to a method for establishing a session between a display device and a local server of a current local network, the method being implemented in a server remote capable of communicating with the display device. Since the remote server is capable of storing in association at least one public LAN identifier with a local address of a local server, the method comprises the steps of:

on receiving from the remote server a local session establishment request from the display device, the request comprising a public identifier of the current local network, determining whether the public identifier of the current local network is associated with an address a local server in the remote server, and

if the public identifier of the current local network is associated with a local address of a local server in the remote server, send to the display device the local address of the local server associated with the public identifier of the local network, in view of establishing a local session between the display device and the local server.

The display means any type of television receiver (television set-top box or TV with built-in decoder). The present invention thus makes it possible to redirect, by a remote server, a display device belonging to a current local network, to a local server of this current local network. LAN is any private network that may be specific to a home, business or any type of organization. By way of example, it may be an IP network, in which the devices of the local network can communicate by addressing to local IP addresses. By redirecting a display device to a local server, the responsiveness of services possibly rendered to the display device is improved. It should be noted that the remote server stores for this purpose an association between a local server local address and an identifier of the current local network. The identifier of the current local network may be an identifier specific to a user of the current local network or may be an IP address of a network access point through which the current local network can access the remote server. The remote server may for example be accessible on the Internet network. The association between the local server local address and the current local network identifier may be static (predefined for a certain number of local networks commonly managed by the remote server) or may be dynamic, as detailed later.

According to one embodiment, the method may further comprise: receiving from the remote server a local server registration request issued from a controller of the current local network, the registration request including a local address of the control device and including the public identifier of the current local network,

storage in the remote server of the public identifier of the current local network in association with the local address of the control device considered as the local server of the current local network.

By control device is meant any type of digital tablet, laptop or fixed or Smartphone. Such an embodiment allows a dynamic management by the remote server associations between local server local address and local network public identifier. Such dynamic management is enabled by a declaration step of a control device of the current local network, capable of performing local server functions (for example, input of text to be displayed on the display device, change of channel of television, digital content transfer to the display device, etc.). The declaration step is performed with the remote server which can thus store in association the local address of the local server with the public identifier of the current local network.

According to one embodiment of the invention, in the absence of association between the public identifier of the current local network and a local address of a local server, the method may further comprise sending to the display device of a message that no local server is available.

Thus, the display device can avoid waiting until a local server of the current local network is registered with the remote server, and can thus require the establishment of a session with a remote server.

In addition, the remote server may periodically receive, at a given frequency, the local session establishment request from the display device.

No restriction is attached to the value of the given frequency. This value may in particular depend on constraints such as the desired system responsiveness or on the contrary the fact of not unnecessarily overloading the current local network by sending too many local session establishment requests to the remote server.

It can be provided, in one variant, that the method comprises:

storage with the local server or the remote server of said establishment requests, and

- A response to one of said requests in case of availability of information comprising a local address of a local server associated with the public identifier of the current local network.

The session establishment requests are therefore waiting to be answered in the remote server until information from a local server is available. In addition, the invention may provide a time counter on the display device side or remote server side. Thus, on expiration of the time counter, the remote server sends a response to the display device informing it that a new registration request must be issued in order to remain waiting for information.

Thus, to improve overall system responsiveness, the local or remote server can store the session establishment requests and respond to them only when information to be sent is available (for example a local address of the local server, or the text a message to be displayed on a screen for example from a control device for displaying text on the screen of the display device for greater ergonomics for the user). The flow rate then consumed can be thus lower and the reactivity of the system can be improved.

As a further variant, in the absence of association between the public identifier of the current local network and a local address of a local server, the method may furthermore comprise the establishment of a session between the display device and the remote server.

Such a variant makes it possible, by default, to establish a communication session between the remote server and the display device when no local server of the current local network is available.

According to one embodiment of the invention, the request Local session setup may be from an HbbTV application running on the display device.

Such an embodiment is particularly advantageous in that it allows an implementation in a context of an HbbTV compatible display device. In fact, an HbbTV application enables a display device to transparently contact the user with a remote server associated with the HbbTV application. Thus, according to the invention, the remote server redirects, if possible, the HbbTV application to a local server of the current local network, which improves the responsiveness of the system, or even the addition of new functions.

An embodiment of the invention may provide that the local session establishment request further comprises a unique identifier of the display device and if the public identifier of the current local network is associated with a local address of a server local to the remote server, the method further comprises storing the unique identifier of the display device in association with the public identifier of the current local network and the local address of the local server.

Thus, a triplet of identifiers (public identifier of the local network, unique identifier of the display device and local address of the local server) can be stored in the remote server. Such a triplet of identifiers makes it possible to provide for the recording of a plurality of local servers for the same current local network, and also makes it possible to satisfy local session establishment requests originating from a plurality of display devices. of the current local network. For example, it is possible to provide for a single display device to be associated with a given local server.

A second aspect of the invention relates to a computer program comprising instructions for implementing the method according to one of the embodiments of the first aspect of the invention, when this program is executed by a processor.

A third aspect of the invention relates to a server for establishing a session between a display device and a local server of a current local network, the server being able to communicate with the display device. The server includes: a storage unit for storing in association at least one public LAN identifier with a local address of a local server;

a unit for receiving a local session establishment request from the display device, the request comprising a local network public identifier;

a determination unit for determining, upon reception of the local session establishment request, whether the public identifier of the current local network is associated with a local address of a local server in the remote server; and

a sending unit for sending to the display device, if the public identifier of the current local network is associated with a local address of a local server in the remote server, the local address of the local server associated with the local server; public identifier of the local network, for the purpose of establishing a local session between the display device and the local server.

According to one embodiment, the server may further comprise a reception unit for receiving a local server registration request from a control device of the current local network, the registration request comprising a local address of the local network device. command and the public identifier of the current local network, and the storage unit can store the public identifier of the current local network in association with the local address of the control device considered as local server of the current local network.

A fourth aspect of the invention relates to a display device of a current local network, the display device being able to communicate with a remote server. The device comprises:

a sending unit for sending a local session establishment request to the remote server, the request comprising a public identifier of the current local network;

a reception unit for receiving, from the remote server, a local address of a local server of the current local network;

a sending unit for sending, in the direction of the local address of the local server, a connection request to the local server.

According to one embodiment, the display device can include an execution unit of an HbbTV application associated with the remote server and the local session establishment request can be sent by the HbbTV application to the remote server associated with the HbbTV application.

A fifth aspect of the invention relates to a control device of a current local network, the current local network comprising at least one display device, the control device being able to communicate with a remote server, the control device being associated with a local address. The control device comprises:

an installation unit of a local server application for controlling the display device;

a sending unit for sending a local server registration request, the registration request including the local address of the control device;

a reception unit for receiving a connection request from the display device;

a unit for launching a local session upon receipt of the request from the display device for controlling the display device by means of the local server application.

According to one embodiment of the invention, the control device can be a smartphone, a laptop or a digital tablet.

A sixth aspect of the invention relates to a system for establishing a session between a display device and a local server of a current local network. The display device according to the fourth aspect of the invention, the local server is a control device according to the fifth aspect of the invention, and the system further comprises a server according to the third aspect of the invention and a access point of the current local network, the access point being associated with a public identifier of the current local network and the access point allowing communications between the server, the control device and the display device.

Other characteristics and advantages of the invention will appear on examining the detailed description below, and the accompanying drawings on which:

FIG. 1 represents a system for establishing a local session between a control device and a display device of a current local network, according to one embodiment;

FIG. 2 is a diagram showing the steps of a method according to certain embodiments of the invention;

FIG. 3 illustrates exchanges between the elements of the system of FIG. 1, according to a first scenario of the invention;

FIG. 4 illustrates exchanges between the elements of the system of FIG. 1, according to a second scenario of the invention.

Fig. 1 shows a system for establishing a local session according to one embodiment. The system comprises a display device 1, a control device 2, a network access point 3 and a remote server 4. The network access point 3 is associated with a current local network 5 including in particular the device 1 and the control device 2. As detailed in the following, no restriction is attached to the number of display devices or to the number of control devices, included in the current local network 5.

The current local network 5 can be identified to the server 4 by a public identifier of the current local network 5. For example, the public identifier may be the public IP address of the network access point 3 (which may be an ADSL box by example). As a variant, the public identifier of the current local network 5 may be a public identifier of a user of the current local network 5 (user identifier associated with a TNT2.0 account for example or identifier of a dwelling integrating the current local network 5 ).

The display device 1 may be a terminal such as a television set, a video projector, or a set-top box (or any HbbTV-compatible television receiver) in connection with such a television or video projector. According to variants, the display device may be a terminal such as a digital tablet or a fixed or portable computer, or a mobile telephone terminal (smartphone or other type).

The display device 1 comprises, in an exemplary embodiment, an air interface 10, an application execution unit 1 1, an interface 12 and a display unit 13 (a screen for example). In the case where the display device 1 is a Set-Top Box, the display unit may be an interface connected to a television set or a video projector. Thus, the example of the TV 1 used in the following does not in any way limit the scope of the invention to the implementation of the features of the TV 1 in a single device.

The air interface 10 allows the display device 1 the reception of digital television channels, such as channels of the TNT (Digital Terrestrial Television) for example. As an alternative to radio reception, reception can be provided in an IP stream for example, or else by satellite link, without any limitation thus to radio reception.

The network access point 3 allows the display device 1 and the control device 2 access to a network such as an IP network and thus access to a plurality of remote servers. For the sake of simplicity, only one remote server 4 has been shown in FIG. A server can be dedicated to a given digital television channel for example. The server 4 can be accessible via the HTTP protocol and the HTML language. In this case, the controller 2 may be any type of HTML compatible device.

When receiving television channels via the air interface 10, an HbbTV application can also be stored and installed by the application execution unit 1 1. Such an application makes it possible to access, via the IP network, the remote server 4 associated with the HbbTV application.

The control device 2 comprises an application installation unit 20, a graphical user interface 21, a processing unit 22 as well as an interface 23. The control device may be a terminal such as a touch pad, an Smartphone or a laptop or fixed.

It should be noted that the control device 2 can communicate with the network access point 3 connected to the network comprising the remote server 4, via any type of known interface 23, such as a Wi-Fi interface or a wired interface. for example. The control device 2 is associated with a local address, such as a local IP address, which can only be used for routing within the current local network 5. According to the invention, the control device 2 can be used as a server by means of display devices of the current local network 5. For this purpose, a "server" application can be stored and installed in the application installation unit 20.

Any request for the local IP address of the controller 2 may be directed to the controller 2 via a switch 31 of the network access point 3. The network access point 3 further comprises a routing unit 30. in order to route requests to the outside of the current local network 5 in particular to the remote server 4. The remote server 4 comprises for this purpose an interface 40, which may include a plurality of ports for communications with the network access point 3 especially. The remote server 4 further comprises a storage unit 41 able to store in association public identifiers of local networks and local addresses of local servers, as detailed later. The remote server 4 further comprises a determination unit 42 whose functionalities will be detailed with reference to FIG. 2. FIG. 2 is a diagram illustrating the steps of a method according to certain embodiments of the invention.

In a step 201, the remote server 4 receives, from the display device 1, a local session establishment request. The setup request includes the public identifier of the local network (in the present example, the public IP address of the network access point 3). The remote server 4 receives the establishment request at the interface 40 which transmits the establishment request to the determination unit 42. Such a local session establishment request can be issued from the installed HbbTV application. on the display device 1.

The determining unit 42 is able to determine, in a step 202, whether the public IP address of the network access point 3 is associated with at least one local address of a local server, by consulting the storage unit. 41.

In the absence of any association between the public identifier of the network current local 5 and a local address of a local server, the method returns to step 201. It should be noted that, in addition, the remote server 4 can send a message to the display device 1, the message indicating that no local server is available. In this case, the display device 1 can send regularly, at a predetermined frequency, for example, a new request for establishing a local session to a new step 201. Alternatively, in the absence of any association between the public identifier of the current local network 5 and a local address of a local server, a session can be established between the remote server 4 and the display device 1. In addition, an alternative application can be provided which simply operates without a local server.

In the case where at least one local address of a local server is associated with a public identifier such as the public IP address of the network access point 3 (or even a client number for example), the determination unit 42 furthermore checks whether several local addresses are associated with the public IP address of the network access point 3 in the storage unit 41, at a step 203.

If only one local server local address is associated with the public IP address of the network access point 3, the remote server 4 sends the display device 1, via the interface 40, to a step 204, the address local server of the local server associated with the public IP address of the network access point 3. The display device 1 and has the local address of a local server internal to the current local network 5, and can establish a session local with the local server. The establishment of the local session will be detailed later with reference to Figures 3 and 4.

If several local server local addresses are associated with the public IP address of the network access point 3, the determination unit 42 can determine, at a step 205, a unique identifier of the display device 1. For this purpose, such a unique identifier of the display device 1 may be included in the local session establishment request received from the display device 1 in step 201.

At a step 206, the unique identifier of the display device 1 is associated in the storage unit 41 with the identifier doublet formed by both the public IP address of the network access point 3 and one of the local server local addresses associated with the public IP address of the access point 3, thus constituting a triplet of identifiers. No restriction is attached to the choice of a local server among the several local servers whose local addresses are associated with the public IP address of the network access point 3.

The local address of the chosen local server is then sent to step 204, via the interface 40, to the display device 1.

Thus, it is advantageously possible to provide several display devices and local servers in the only current local network 5. In fact, when establishing a new local session required by the same display device 1, the server 4, by means of the triplet of identifiers stored in the storage unit 41, can determine the local address of the local server which is associated with both the unique identifier of the display device 1 and the public IP address of the access point 3.

No restriction is attached to the unique identifier of the display device 1. It may for example be the local IP address of the display device or a permanent number uniquely identifying the display device 1.

In a step 207, which may be before or after step 201, the remote server 4 receives, via the interface 40, a local server registration request sent by the control device 2, the registration request. comprising the local IP address of the control device 2 as well as the public IP address of the network access point 3. The registration request can be issued by the interface 23 when the "server" application is launched on the control device 2, the control device 2 can include in the registration request the local IP address of the control device 2. While passing through the network access point 3, the registration request can be seen by the remote server 4 as coming from the public IP address of the network access point 3.

In a step 208, the remote server 4 stores in association, in the storage unit 41, the public address of the access point 3 and the local IP address of the control device 2 considered as a local address of local server. Steps 207 and 208 thus make it possible to declare the existence of a local server in the current local network 5, so that the remote server 4 can redirect the display device 1 having sent a local session establishment request, as previously explained.

It should be noted that steps 207 and 208 may be performed for issuing a local server registration request from another controller than the aforementioned controller 2. Thus, several local servers can be declared in the only current local network 5.

At a step 209, which may be before or after the step

201, the remote server 4 receives a message from the control device 2 indicating that the "server" application has been completed, the message comprising the local IP address of the control device 2 as well as the public IP address of the point d "network access 3.

In a step 210, the remote server 4 deletes any association comprising the local IP address of the control device 2 of the storage unit 41. If a local session was previously established between the controller 2 and the display device 1, the HbbTV application periodically re-requests local session setup requests to the remote server 4 until a new session is established. local server is declared on the remote server 4 (or alternatively, be automatically rebooted to a remote server for example).

Alternatively, if a local session was previously established between the controller 2 and the display device 1, step 209 may be optional. Indeed, the display device 1 can detect that the "server" application has ended on the control device 2, for example when no response is received from the control device for a predetermined period of time or when N unanswered requests were sent by the display device 1 towards the control device 2. The HbbTV application executed on the display device 1 can then send a message indicating that the application "server" was completed, the message comprising the local IP address of the control device 2 and the public IP address of the network access point 3. The step 210 can then be performed on the basis of this message.

It should be noted that the chronology according to which the steps 201, 207 and 209 take place, depends on the case of use by the user. In particular, the aforementioned steps can be carried out in parallel if the use case allows it. In order to illustrate different use cases, Figures 3 and 4 are detailed later.

An embodiment of the invention may further provide that, in step 207, the control device 2 can send to the remote server 4 a first sequence of characters entered by a user by means of the graphical user interface 21. , to identify the control device. The remote server 4 can then store in the storage unit 41, the first sequence of characters in association with the doublet / triplet of identifiers thus forming a triplet / quadruplet of identifiers. The first character sequence can then be sent to the display device 1 at the same time as the local IP address of the control device 2. The HbbTV application can then display on the screen 13 the first sequence of characters so that the The user can identify the controller that is in charge of the local session with the display device 1.

Symmetrically, it is also possible that in step 201, the display device 1 transmits a second sequence of characters (predetermined for example, which may be, for example, a TV model or Set-Top Box) with the local session establishment request to the remote server 4. The remote server 4 can then store in the storage unit 41, the first sequence of characters in association with the doublet / triplet / quadruplet of identifiers. The second sequence of characters can then be transmitted to the control device 2 so that the control device 2 can display on the graphical user interface 21 that the display device with which a local session is initiated is the display device 1 identified by the second sequence of characters. Of course, this is an example embodiment: in a variant, it can be provided for example to ask the user to click on the control device (possibly on an icon of a tablet or smartphone for example ) and on a touch of the display device (a television button for example) so to link the two equipment.

FIG. 3 illustrates exchanges between the elements of the system of FIG. 1, according to a first scenario.

According to the first scenario, the "server" application is launched on the control device 2 before the HbbTV application is launched on the display device 1.

At a step 301, the "server" application is started by the application installation unit 20.

In a step 302, the "server" application sends to the remote server 4 a local server registration request, the registration request comprising the local IP address of the control device 2 as well as the public IP address of the server. network access point 3.

At a step 303, the remote server 4 stores in association in the storage unit 41, the public IP address of the network access point 3 as well as the local IP address of the control device 2 as a local address. Local server for the current LAN 5.

At a step 304, the HbbTV application is started by the application execution unit 1 1 of the display device 1.

At a step 305, the HbbTV application sends the remote server 4 a local session establishment request, the setup request including the public IP address of the network access point 3.

At a step 306, the determining unit 42 determines whether the public IP address of the network access point 3 is associated with a local server local address in the storage unit 41.

Insofar as the control device 2 has been previously registered as a local server of the current local network 5 in the storage unit 41, the remote server 4 sends, in a step 307, the local IP address of the storage device. command 2 which is stored as a local server local address for the current local network 5.

At a step 308, on receiving the local IP address of the control device 2, the display device 1 addresses to the control device, via the switch 31 and by means of the local IP address of the control device. command 2, a connection request. On positive response of the controller, a local session is established during a step 310. The controller 2 can, via the network access point 3, act as a local server for the display device 1, without having to pass through a remote server, which improves the responsiveness associated with certain services. Such reactivity is advantageous in the case of dynamic services such as text input on the control device 2 for display on the screen 13 of the display device 1. As previously explained, the control device 2 may, inter alia, be a touch pad or a smartphone, and therefore include a graphical user interface 21 (a touch screen for example) to facilitate text input. The text, once entered, can be processed by the processing unit 22 to send a command for display on the display device 1. The control device 2 can also be used for television channel changes for example.

In addition, for services having a lower dynamic, the control device 2 can serve as a proxy to the display device 1, for downloading digital content on the Internet for example. FIG. 4 illustrates exchanges between the elements of the system of FIG. 1, according to a second scenario.

According to the second scenario, the HbbTV application is launched on the display device 1 before the "server" application is launched on the control device 2.

At a step 401, the HbbTV application is started by the application execution unit 1 1 of the display device 1.

At a step 402, the HbbTV application sends the remote server 4 a local session establishment request, the setup request including the public IP address of the network access point 3.

In a step 403, the determining unit 42 determines whether the public IP address of the network access point 3 is associated with a local server local address in the storage unit 41.

Because, in this example, there is no local server in the current local network 5 has registered with the remote server 4, the remote server 4 returns, in a step 404, to the display device 1, a message indicating that no local server is available for the current local network 5. As previously explained with reference to FIG. 2, other variants can be provided when no local server is registered with the remote server 4.

At a step 405, after receiving the message indicating that no local server is available for the current local network 5, the display device 1 is waiting for a duration which is determined from the given frequency previously introduced before returning a local session setup request at step 406.

Since no local server has been registered (according to the second scenario given by way of example) during the duration of step 405, the determining unit 42 of the remote server 4 determines in step 407 that no local address local server is associated with the public IP address of the network access point 3 in the storage unit 41.

The remote server 4 then returns, in a step 408, to the display device 1, a message indicating that no local server is available for the current local network 5.

At a step 409, after receiving the message indicating that no local server is available for the current local network 5, the display device 1 is again patient for the duration which is determined from the given frequency, before return a local session setup request at step 410.

During the duration of step 409, the "server" application is started by the application installation unit 20 in a step 41 1.

At a step 412, the "server" application sends to the remote server 4 a local server registration request, the registration request comprising the local IP address of the control device 2 as well as the public IP address of the server. network access point 3.

At a step 413, the remote server 4 stores in association in the storage unit 41, the public IP address of the network access point 3 as well as the local IP address of the control device 2 as a local address. Local server for the current LAN 5.

At a step 414, on receipt of the setup request issued by the display device in step 410, the determining unit 42 determines whether the public IP address of the network access point 3 is associated with a local server local address in the storage unit 41.

Insofar as the control device 2 has been previously declared as a local server of the current local network 5 in the storage unit 41, the remote server 4 sends, in a step 415, the local IP address of the storage device. command 2 which is stored as a local server local address for the current local network 5.

At a step 416, on receiving the local IP address of the control device 2, the display device 1 addresses to the control device, via the switch 31 and by means of the local IP address of the control device 2, a connection request. Upon positive response from the controller, a local session is established during a step 418.

The local session can then enable the control device 2 to control the display device 1 in accordance with the services introduced with reference to FIG. 3. The first and second scenarios detailed previously do not in any way restrict all the possible scenarios and are only given for illustrative purposes.

It should be noted that the present invention can be implemented in existing networks, by the use of standardized bricks, as previously explained (IP network, HTTP protocol, HTML language). Thus, the present invention may be compatible with any type of display device 1 (television or digital receiver) or control device 2 (touch pad, smartphone, etc.).

Claims

1. Method for establishing a session between a display device (1) and a local server (2) of a current local network (5), the method being implemented in a remote server (4) capable of communicating with the display device,

characterized in that, the remote server being able to store in association at least one public LAN identifier with a local address of a local server, the method comprises the steps of:

2. Method according to claim 1, characterized in that the method further comprises:

upon receiving from the remote server (4) a local server registration request issued from a controller (2) of the current local network (5), said registration request including a local address of said controller and including the public identifier of the current local network,

3. Method according to one of claims 1 and 2, characterized in that, in the absence of association between the public identifier of the current local network (5) and a local address of a local server (2), the method further comprises sending to the display device (1) a message indicating that no local server is available.

4. Method according to claim 3, characterized in that the remote server (4) regularly receives, at a given frequency, the local session establishment request from the display device (1).

5. Method according to one of claims 1 to 3, characterized in that it comprises:

6. Method according to one of claims 1 and 2, characterized in that, in the absence of association between the public identifier of the current local network (5) and a local address of a local server (2), the method further comprises establishing a session between the display device (1) and the remote server (4).

7. Method according to one of the preceding claims, characterized in that the local session establishment request is from an HbbTV application executed on the display device (1).

8. Method according to one of the preceding claims, characterized in that the local session establishment request further comprises a unique identifier of the display device (1) and in that, if the public identifier of the local network current (5) is associated with a local address of a local server (2) in the remote server (4), the method further comprises storing the unique identifier of the display device by association with the public identifier of the current local network and the local address of the local server.

9. Computer program comprising instructions for implementing the method according to one of claims 1 to 8, when the program is executed by a processor.

A server for establishing a session between a display device (1) and a local server (2) of a current local network (5), said server being able to communicate with the display device,

characterized in that the server (4) comprises:

a storage unit (41) for storing in association at least one public LAN identifier with a local address of a local server;

a reception unit (40) of a local session establishment request from the display device, the request comprising a local network public identifier;

a determination unit (42) for determining, upon reception of the local session establishment request, whether the public identifier of the current local network is associated with a local address of a local server in the remote server; and

a sending unit (40) for sending to the display device, if the public identifier of the current local network is associated with a local address of a local server in the remote server, the local address of the associated local server to the public identifier of the local network, for the purpose of establishing a local session between the display device and the local server.

1 1. Server according to claim 10, characterized in that it further comprises a reception unit (40) for receiving a local server registration request from a control device (2) of the current local network (5). ), said registration request comprising a local address of said control device and the public identifier of the current local network, and in that the storage unit (41) stores the public identifier of the current local network in association with the local address of the control device considered as the local server of the current local network.

12. Device for displaying a current local network (5), said display device (1) being able to communicate with a remote server (4), characterized in that it comprises:

a sending unit (12) for sending a local session establishment request to the remote server (4), the request comprising a public identifier of the current local network;

a reception unit (12) for receiving, from the remote server, a local address of a local server of the current local network;

a sending unit (12) for sending, in the direction of the local address of the local server, a connection request to said local server.

13. Display device according to claim 12, characterized in that the display device comprises an execution unit (1 1) of an HbbTV application associated with the remote server (4) and in that the request of Local session setup is sent by said HbbTV application to the remote server associated with said HbbTV application.

14. Control device of a current local network (5), said current local network comprising at least one display device (1), said control device (2) being able to communicate with a remote server (4), said control device being associated with a local address, characterized in that it comprises:

an installation unit (20) of a local server application for controlling said display device;

- a sending unit (23) for sending a local server registration request, said registration request including the local address of the control device;

a reception unit (23) for receiving a connection request from said display device; - A launch unit (22) of a local session upon receipt of the request of the display device for controlling the display device by means of the local server application.

15. Control device according to claim 14, characterized in that the control device (2) is a smartphone, a laptop or a digital tablet.

16. System for establishing a session between a display device (1) and a local server (2) of a current local network (5), characterized in that the display device is according to the claim 12 or 13, the local server is a control device according to claim 14 or 15, and in that the system further comprises a server (4) according to claim 1 1 and an access point (3) of the local network current, said access point being associated with a public identifier of the current local network and said access point allowing communications between the server, the control device and the display device.