FR3071374A1 - METHOD AND SYSTEM FOR DISTRIBUTING MULTIMEDIA CONTENT TO COMPUTER TERMINALS - Google Patents

Abstract

The invention relates to a method for distributing at least one multimedia content to computer terminals (6a, 6b, 6c) of users, which terminals are connected to a local computer network (LAN), said method comprising the steps of: generating multimedia content (CM) remote from the LAN, - transmitting this multimedia content (CM) to a computer gateway (3) integrated in the LAN, via a satellite link communication network (2), or by link wireless, or cable link, - record all or part of the multimedia content (CM) received by the computer gateway (3), in a database (4) accessible and controllable from said gateway, - distribute to the computer terminals (6a , 6b, 6c) which requires it, all or part of the multimedia content (CM) received by the computer gateway (3), which distribution is performed in the LAN, according to an internet communication protocol, in response to requests sent in said LAN from said terminals.

Description

METHOD AND SYSTEM FOR DISTRIBUTING MULTIMEDIA CONTENT TO COMPUTER TERMINALS Description

Technical field of the invention.

The subject of the invention is a method and a system for distributing multimedia content to computer terminals. The invention elegantly relates to a method for delocalizing multimedia content initially stored in a computer server accessible only through the internet network.

It concerns the technical field of multimedia telecommunications and more particularly that of the distribution of multimedia content through a communication network other than the Internet.

State of the art.

OTT or OTT services allow the distribution of multimedia content over the Internet, without the participation of a traditional network operator (such as a cable, telephone or cable company). satellite). Generally, multimedia content comes from a third party (for example Netflix® or Youtube®) and is downloaded to users' computer terminals by an Internet service provider (for example Orange®) which is only used to transport IP packets (from the English "Internet Protocol").

-2 Referring to FIG. 7, the multimedia content of the third party is usually stored in a computer server S only accessible through the internet network R. To read and / or download a file (for example a video) of the multimedia content, the computer terminal T (smartphone, tablet, PC, etc.) of a user U generally connects to the internet network R, through a modem / router M, for example by wifi. The terminal T generates and transmits to the server S, through the internet network R, a request to play the video concerned. The request is received by the server S which will open a communication channel to the terminal T so that the video can be played by said terminal.

The Internet network R is generally a global network of the WAN type (for the English "World Area Network"). If access to the Internet is reduced, saturated (due to too low bandwidth) or non-existent, multimedia content cannot be played or downloaded on the T terminal. This is particularly the case in countries developing where access to the internet can be problematic. The bandwidth available on the Internet can also limit the number of user computer terminals to which multimedia content is distributed and / or slow the distribution of said content.

The invention aims to remedy this state of affairs. In particular, an objective of the invention is to facilitate the distribution of OTT multimedia content to computer terminals, while freeing themselves from the Internet.

Another objective of the invention is to be able to easily increase the number of computer terminals to which multimedia content is distributed in order to increase the number of users or content wishing to receive said content.

Yet another objective of the invention is to be able to rapidly distribute multimedia content to user computer terminals.

-3Disclosure of the invention.

The solution proposed by the invention is a method for distributing at least one multimedia content to user computer terminals, which terminals are connected to a local computer network (LAN), said method comprising the steps consisting in:

- generate multimedia content remotely from the LAN,

- transmit this multimedia content to a computer gateway integrated in the LAN, through a communication network by satellite link or by radio link, or by cable link,

- record all or part of the multimedia content received by the IT gateway, in a database accessible and controllable from said gateway,

- distribute to the computer terminals which require it, all or part of the multimedia content received by the computer gateway, which distribution is carried out in the LAN, according to an internet communication protocol, in response to requests sent in said LAN from said terminals.

This distribution combines a technique for broadcasting multimedia content by satellite, over the air or by cable, outside the LAN, and a technique for broadcasting multimedia content according to an internet communication protocol inside the LAN. All the multimedia content initially stored on the server, and which was only accessible through the Internet, is now deported to the computer gateway, and more particularly to the database, which content is easily accessible from the LAN.

Other advantageous characteristics of the process which is the subject of the invention are listed below. Each of these characteristics can be considered alone or

-4 in combination with the remarkable characteristics defined above, and be the subject, if necessary, of one or more divisional patent applications:

- Preferably, audio and video files of multimedia content are encoded according to the HLS broadcasting protocol, which encoding is carried out before the transmission of said multimedia content through the communication network.

- Preferably, the audio / video files encoded according to the HLS broadcasting protocol are modulated according to a standard transmission protocol by satellite link, respectively by radio link or by cable link, which modulation is carried out before the transmission of multimedia content through of the communication network.

- The multimedia content is advantageously broadcast through the communication network according to a multipoint broadcast (multicast).

- The multimedia content is advantageously broadcast in the LAN according to a point-to-point broadcast (unicast).

Another aspect of the invention relates to a system for distributing at least one multimedia content to user computer terminals, which terminals are connected to a local computer network (LAN), said system comprising:

- a communication network by satellite link, or by radio link, or by cable link,

a device for generating multimedia content remotely from the LAN, which device is suitable for connecting to the communication network for transmission of said multimedia content,

- a computer gateway integrated into the LAN and connected to the satellite communication network to receive multimedia content,

a database accessible and controllable from the computer gateway and in which all or part of the multimedia content received by said gateway is recorded,

the computer gateway is adapted to distribute to the computer terminals which require it, all or part of the multimedia content received by said gateway, which distribution is carried out in the LAN, according to an internet communication protocol, in response to requests sent in said LAN from said terminals.

Other advantageous characteristics of the system which is the subject of the invention are listed below. Each of these characteristics can be considered alone or in combination with the remarkable characteristics defined above, and be the subject, if necessary, of one or more divisional patent applications:

- A wifi modem is preferably connected to the gateway, which modem acts as a WiFi access point in the LAN.

- The database can be saved in a fixed or removable hard disk which is an integral part of the gateway's IT resources.

- In an alternative embodiment, the database is saved in a hard drive remote from the gateway, which hard drive is connected to said gateway by wire or wirelessly.

- According to one embodiment, several computer gateways are connected in series in the LAN so that a first gateway receives the multimedia content and the transfer to the other gateways.

- Each computer gateway can be connected to its own database, each of said gateways being adapted to record all or part of the multimedia content in its database.

- In an alternative embodiment, all or part of the multimedia content is recorded in a common database, which database is accessible by all of the computer gateways.

- According to another embodiment, several computer gateways are connected in parallel in the LAN so that each of them receives different content.

Yet another aspect of the invention relates to a method for relocating at least one multimedia content initially stored in a server

-6informatics accessible only through the Internet, said process comprising the steps of:

- transmit the multimedia content initially stored in the computer server to a computer gateway integrated into a local computer network, which transmission is carried out through a communication network by satellite link, or by radio link, or by cable link,

- record all or part of the multimedia content received by the IT gateway, in a database accessible and controllable from said gateway,

- distribute in the LAN, to user terminals connected to the LAN, all or part of the multimedia content received by the computer gateway, which distribution is carried out according to an internet communication protocol, in response to requests sent in said LAN from said said terminals.

Description of the figures.

Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the appended drawings, produced by way of indicative and nonlimiting examples and in which:

- Figure 1 shows schematically a system according to the invention,

FIG. 2 illustrates in a simplified manner the IT structure of a computer terminal used in the invention,

FIG. 3 illustrates in a simplified manner a computer structure of a device for broadcasting multimedia content used in the invention,

FIG. 4 illustrates in a simplified manner a computer structure of a computer gateway used in the invention,

FIG. 5 diagrammatically shows an arrangement of several computer gateways connected in series,

FIG. 6 diagrammatically shows an arrangement of several computer gateways connected in parallel,

- Figure 7 shows schematically a broadcasting system according to the prior art.

Preferred embodiments of the invention.

The system and method which are the subject of the invention generate manipulations of physical elements, in particular signals (electrical or magnetic) and digital data, capable of being stored, transferred, combined, compared, etc., and allowing '' achieve a desired result.

The invention implements one or more computer applications executed by computer equipment. For the sake of clarity, it should be understood in the sense of the invention that "an equipment does something" means "the computer application executed by processor or microprocessor of the equipment does something". Just as "the computer application does something" means "the computer application executed by the processor or microprocessor of the equipment does something".

Again for the sake of clarity, the present invention may refer to one or more "logical computer processes". These correspond to the actions or results obtained by the execution of instructions from different computer applications. Also, it must also be understood in the sense of the invention that "a logical computer process is suitable for doing something" means "the instructions of a computer application executed by a processor or microprocessors do something".

Again for the sake of clarity, the following clarifications are made to certain terms used in the description and the claims:

- “Multimedia content” can be understood in a nonlimiting way such as: video, live video (received in real time), VOD (video on demand, prerecorded video), audio, music, radio, live radio, radio podcast, game, computer application, book, newspapers, articles, photos, etc.

- "Computer gateway" or "gateway" means computer equipment making it possible to connect two communication networks of different types, in particular a local area network (LAN) and a communication network by satellite link or by radio link or by cable link. The gateway performs packet routing as well as more advanced processing on these.

"Computer resource" can be understood in a nonlimiting way as: component, hardware, software, file, connection to a computer network, amount of RAM memory, hard disk space, throughput, bandwidth, processor speed, number of CPUs, etc.

- “Request” designates an execution order that can follow a communication protocol and includes input parameters (question) and return parameters (response), in a format linked to the protocol used.

- "Central processing unit" can be understood in a nonlimiting way as: processor, microprocessors, CPU (for Central Processing Unit).

- "Software" can be understood as: computer application, computer programs or software.

- "Communication network" or "network" means a set of computer equipment linked together to exchange, securely or not, information and / or data according to a suitable communication protocol (ISDN, Ethernet, ATM, IP , CLNP, TCP, HTTP, DVB ...).

- “Database” can be understood in a nonlimiting way as a structured and organized set of data or files recorded on supports accessible by computer equipment and which can be interrogated, read and updated. Data or files can be inserted, recovered, modified and / or destroyed. Management and access to the database

- 9 can be provided by a set of software which constitute a database management system (DBMS).

The distribution system shown in Figure 1 includes a device 1 for generating multimedia content. This device 1 is for example managed by an OTT service provider.

The multimedia content CM generated by the device 1 is transmitted to a communication network by satellite link 2 using a standard transmission protocol, in particular the DVB-S protocol (for English “Digital Video Broadcasting - Satellite”) and more particularly DVB-S2 (DVB-S second generation) or DVB-S2X (extension of DVB-S2) protocol. The invention must however be understood as being capable of implementing a communication network by radio link or by cable link. For a wireless communication network, the standard transmission protocol used will be the DVB-T (for Digital Video Broadcasting - Terrestrial) or DVB-T2 (second generation DVB-T) protocol. And for a cable communication network, the standard transmission protocol used will be the DVB-C protocol (for English "Digital Video Broadcasting - Cable). For the sake of clarity, and without this being considered as limiting, the rest of the description only refers to a communication network by satellite link.

The communication network via satellite link 2 transmits the multimedia content CM to a computer gateway 3. This gateway preferably takes the form of a box of the set-top box set-top box type. All or part of the multimedia content CM received by the gateway 3 can be recorded in a database 4 accessible and controllable from said gateway. This database 4 can be stored in a fixed or removable hard disk forming an integral part of the computer resources of the gateway 3, or in a hard disk remote from said gateway and connected to

- 10 this last wired (for example via an RJ45 cable) or wireless (for example via a Wifi connection).

Platform 3 then distributes to computer terminals 6a-6d of users who require it, all or part of the multimedia content. This distribution is preferably carried out via a wifi modem 5 connected to the gateway 3. The distribution could also be carried out using other communication protocols.

The gateway 3, the database 4, the wifi modem 5 and the computer terminals 6a-6d are integrated into a local computer network, or LAN (for English "Local Area Network"). The LAN is a network with a relatively small geographic scale, for example a house, a building, a restaurant or bar room, a business site, an airport or railway station hall, etc. The LAN is preferably a wireless network (or WLAN for English Wirelss LAN), the wifi 5 modem acting as a wifi access point or "hot-spot". The LAN can also be a wired network, the computer terminals 6a-6d connecting to the wifi modem 5 by means of a cable (RJ45 cable, Ethernet cable, fiber optic, ...).

The users are natural persons located in the LAN. Their computer terminal 6a-6d is preferably in the form of a mobile phone or smart phone such as a smartphone of the iPhone®, Samsung Galaxy® type, or in the form of another electronic device (fixed or portable computer, tablet, television, ...), operating with a Windows, Mac, iOS, Android, etc. operating system.

Referring to FIG. 2, a computer terminal 6 notably comprises a central processing unit 60, one or more memories 61, a communication module 62, a graphic interface 63, which are mutually connected via a bus 64. One or more computer applications - or computer programs - are recorded in the memory or memories 61 and whose instructions, when executed by the central processing unit 60, make it possible to carry out the functionalities described further on in the description.

The memory or memories 61 must be considered as a storage device also suitable for storing data and / or data files. It can be native memory or add-on memory such as a Secure Digital (SD) card. The processing unit 60 and the memory 61 can be integrated into a SIM card (for the English Suscriber Identity Module), the latter being connected to the bus 64.

The communication module 62 is suitable for receiving radio frequency signals transmitted wirelessly in the LAN from, in particular from the gateway 3 and more particularly from the modem 5. The communication module 62 is also suitable for transmitting radio frequency signals in the LAN for communicate wirelessly with gateway 3 and more particularly with the modem

5. These radiofrequency signals are preferably signals using a Wifi protocol.

The graphic interface 63 offers the user the possibility of entering, selecting and / or entering data or instructions at the gateway 3. It is for example in the form of a touch screen, a screen connected to a keyboard, etc.

The user must install a computer application in his computer terminal to implement all or part of the invention from said terminal. This computer application can be preinstalled on the terminal, for example by the operator to which said user is affiliated. However, the user can search the computer application on an online store such as Google Play®, Itunes® or on a dedicated website, and then download it to his terminal. Information to download and install the computer application can for example be retrieved using a QR code or an NFC tag. In any event, the computer application can be installed in any memory 61 of the terminal.

- 12 A preferred embodiment of the device 1 for generating multimedia content is shown schematically in detail in FIG. 3. The audio and video files TSi, TS2, TS3 of the multimedia content CM are encoded according to the HLS broadcasting protocol (for HTTP Live Streaming) using an encoder 10. The TS1 file is for example a live video, the TS2 file a video on demand and the TS3 file a radio broadcast in podcast. As explained further in the description, the HLS encoding allows the audio and video files TS1, TS2, TS3 to be subsequently read and / or downloaded by the computer terminals for uses according to the IP protocol (for English Internet Protocol) .

HLS encoded files are multiplexed using a multiplexer

11. This multiplexing allows you to switch from broadcasting point-to-point (or unicast) files TS1, TS2, TS3 to multipoint (or multicast) broadcasting. This multicast broadcast allows all TS1, TS2, TS3 files to be broadcast simultaneously to satellite 2, without any bandwidth problems. You can also add other files at the level of the multiplexer 11, for example an L book in PDF format.

All the multiplexed files TS1, TS2, TS3, L are modulated according to a standard protocol for satellite transmission. A modulator 12 provides for example modulation according to the DVB-S2 protocol.

A satellite transmitter 13 then transmits this multimedia content to the satellite 2. The multimedia content CM transmitted here consists of a set of multiplexed files, which set is modulated according to the DVB-S2 protocol.

A preferred embodiment of the gateway 3 is shown schematically in detail in FIG. 4. The multimedia content CM originating from the satellite 2 is received by a satellite receiver 30.

The multiplexed and modulated files according to the DVB-S2 protocol are demodulated by means of a demodulator 31 and then demultiplexed by means of a demultiplexer 32. This demultiplexing makes it possible to go from a multicast broadcast of the files TS1, TS2, TS3, L to unicast broadcasting. The demultiplexer 32 advantageously incorporates a central processing unit making it possible in particular to

- 13 manage the different files received. This central processing unit can however be in the form of another computer resource of the gateway 3 which is distinct from the demultiplexer 32.

The files of the multimedia content which are not broadcast in real time (or live) are advantageously recorded in the database 4. The files TS2 (video on demand) and TS3 (radio broadcast in podcast) encoded in H LS and the file L (book) encoded in PDF, are notably recorded in the database 4 for later reading and / or downloading. The TS1 file (live video) encoded in HLS is directed directly and continuously to the wifi modem 5.

The database 4 can be updated regularly as the multimedia content is received by the gateway 3. For example, it can be envisaged that the files will only remain saved (and therefore accessible) for a period of time limited (one week, one month, ...). Beyond this period, the new files received by gateway 3 will overwrite or replace the files previously received and saved.

In comparison with the installation in FIG. 7, all the multimedia content initially stored in the server S, and which was only accessible through the internet network R, is now deported to the gateway 3, and more particularly to the database 4, which content is easily accessible from the LAN.

The users who are in the LAN can now read and / or download the files received by the gateway 3. These reads and / or downloads are carried out using an internet communication protocol (IP Protocol). All the multimedia content files received by the gateway 3 are now accessible from the terminals 6a-6d for use according to the IP protocol. Users can therefore read and / or download these files in the same way as they would through a conventional Internet network for

- 14read and / or download a file from a server of a service provider

OTT (e.g. Netflix® or Youtube®).

More particularly, all the files TSi, TS2, TS3, L appear visibly on the graphical interface 63 of the terminals 6a-6d. Each user can select from the graphical interface 63 the file they wish to read and / or download.

As an illustrative example, a first user A wishes to view the live video (file TS1) and a second user B wishes to view the video on demand (file TS2).

The selection of file TS1 by user A results in the transmission in the LAN, from terminal 6a, of a request. This request is sent according to an IP protocol, and more particularly is sent by wifi. The request is received by the wifi modem 5 which transfers it for processing to the demultiplexer 32 (or to the central processing unit of the gateway 3 if the latter is not integrated in the demultiplexer). The demultiplexer 32 will then command the wifi modem 5 so that the latter opens a communication channel with the terminal 6a so that the file TS1 can be read live by said terminal.

The selection of file TS2 by user B also results in the transmission, according to an IP protocol, in the LAN, from terminal 6b, of a request. This request is received by the wifi modem 5 which transfers it for processing to the demultiplexer 32 (or to the central processing unit of the gateway 3 if the latter is not integrated in the demultiplexer). The demultiplexer 32 will then search for the file TS2 in the database 4 and order its transfer to the terminal 6b, through the wifi modem 5. The file TS2 is thus downloaded to the terminal 6b, the user B being able to view the video corresponding after download.

Due to its limited bandwidth, gateway 3 can only process a limited number of requests. For example, if the bandwidth of gateway 3 is 50 Mbit / s, it can only distribute 50 files simultaneously

- 15 from 1 Mbit to 50 terminals. To increase the number of terminals capable of reading and / or downloading files of multimedia content, it is possible to multiply the number of gateways in the LAN. This type of installation is illustrated in Figure 5 where three gateways 3a, 3b, 3c are connected in series. Each gateway is connected to its own database 4a, 4b, 4c and to a common wifi modem 5. The first gateway 3a receives the multimedia content CM and the transfer to the other gateways 3b, 3c. Each of the gateways 3a, 3b, 3c records the files concerned in its database 4a, 4b, 4c and communicates with the user terminals through the wifi modem 5. In an alternative embodiment, it is possible that all or part multimedia content CM is recorded in a single common database, for example 4a, which is accessible by all the gateways 3a, 3b, 3c. According to one embodiment, the wifi modem 5 receives for example 150 requests at the same time and transmits them to the first gateway 3a which acts as a "master" gateway. If the first gateway 3a cannot process all of these requests, it will distribute them in the other “slave” gateways 3b, 3c which will process them. This master / slave model is not exhaustive and is simply mentioned as an illustrative example of principle.

To increase the overall bandwidth, it is possible to connect the gateways 3a, 3b, 3c in parallel. This type of installation is illustrated in Figure 6. For example, if the bandwidth of each gateway 3a, 3b, 3c is 50 Mbit / s, all of these gateways can now simultaneously distribute up to 150 files of 1 Mbit at 150 terminals. Each gateway 3a, 3b, 3c is connected to a common wifi modem 5. The first gateway 3a receives multimedia content CMi from a first communication network by satellite link 2a. The second gateway 3b receives multimedia content CM2 from a second communication network via satellite link 2b. The third gateway 3c receives multimedia content CM3 from a third communication network via satellite link 2c.

--Each of the gateways 3a, 3b, 3c saves the files concerned in its own database or in a common database.

The arrangement of the various elements and / or means and / or steps of the invention, in the embodiments described above, should not be understood as requiring such an arrangement in all implementations. In any event, it will be understood that various modifications can be made to these elements and / or means and / or stages, without departing from the spirit and scope of the invention.

Claims (14)

claims 1. Method for distributing at least one multimedia content to user computer terminals (6a, 6b, 6c) (A, B, C), which terminals are connected to a local computer network (LAN), said method comprising the steps consists in : - generate multimedia content (CM) remotely from the LAN, - transmit this multimedia content (CM) to a computer gateway (3) integrated in the LAN, through a communication network by satellite link (2), or by radio link, or by cable link, - record all or part of the multimedia content (CM) received by the computer gateway (3), in a database (4) accessible and controllable from said gateway, - distribute to the computer terminals (6a, 6b, 6c) which requires it, all or part of the multimedia content (CM) received by the computer gateway (3), which distribution is carried out in the LAN, according to an internet communication protocol, response to requests sent in said LAN from said terminals. 2. Method according to claim 1, comprising a step consisting in encoding according to the HLS broadcast protocol, audio and video files (TSi, TS2, TS3) of multimedia content (CM), which encoding is carried out before the transmission of said multimedia content through the communication network (2). 3. Method according to claim 2, comprising a step consisting in modulating according to a standard protocol of transmission by satellite link, respectively by radio link or by cable link, the audio / video files (TSi, TS2, TS3) encoded according to the protocol HLS broadcast, which - 18modulation is carried out before the transmission of multimedia content (CM) through the communication network. 4. Method according to one of the preceding claims, in which the multimedia content (CM) is broadcast through the communication network (2) according to a multipoint broadcast. 5. The method of claim 4, wherein the multimedia content (CM) is broadcast in the LAN in a point-to-point broadcast. 6. System for distributing at least one multimedia content to user computer terminals (6a, 6b, 6c) (A, B, C), which terminals are connected to a local computer network (LAN), said system comprising : - a communication network by satellite link (2), or by radio link, or by cable link, a device (1) for generating multimedia content (CM) remotely from the LAN, which device is suitable for connecting to the satellite communication network (2) for transmission of said multimedia content, - a computer gateway (3) integrated into the LAN and connected to the communication network (2) to receive multimedia content (CM), a database (4) accessible and controllable from the computer gateway (3) and in which all or part of the multimedia content (CM) received by said gateway is recorded, the computer gateway (3) is adapted to distribute to the computer terminals (6a, 6b, 6c) which requires it, all or part of the multimedia content (CM) received by said gateway, which distribution is carried out in the LAN, according to a protocol internet communication, in response to requests sent in said LAN from said terminals. 7. The system of claim 6, wherein a wifi modem (5) is connected to the gateway (3), which modem acts as a wifi access point in the LAN. 8. System according to one of claims 6 or 7, wherein the database (4) is stored in a fixed or removable hard disk forming an integral part of the gateway's computer resources (3). 9. System according to one of claims 6 or 7, in which the database (4) is stored in a hard drive remote from the gateway (3), which hard drive is connected to said gateway by wire or wirelessly . 10. System according to one of claims 6 to 9, in which several computer gateways (3a, 3b, 3c) are connected in series in the LAN so that a first gateway (3a) receives the multimedia content (CM) and transfer to other gateways (3b, 3c). 11. The system as claimed in claim 10, in which each computer gateway (3a, 3b, 3c) is connected to its own database (4a, 4b, 4c), each of said gateways being adapted to record all or part of the multimedia content ( CM) in its database (4a, 4b, 4c). 12. The system of claim 10, wherein all or part of the multimedia content (CM) is recorded in a common database, which database is accessible by all of the computer gateways (3a, 3b, 3c). 13. System according to one of claims 6 to 9, in which several computer gateways (3a, 3b, 3c) are connected in parallel in the LAN. -2014. Method for relocating at least one multimedia content (CM) initially stored in a computer server (S) accessible only through the internet network (R), said method comprising the steps consisting in: - transmit multimedia content (CM) initially stored in the server 5 computer (S) to a computer gateway (3) integrated into a local computer network (LAN), which transmission is carried out through a communication network by satellite link (2), or by radio link, or by link by cable, - record all or part of the multimedia content (CM) received by the IT gateway (3), in a database (4) accessible and controllable from said gateway, - distribute in the LAN, to user terminals (6a, 6b, 6c) (A, B, C) connected to the LAN, all or part of the multimedia content (CM) received by the computer gateway (3), which distribution is carried out according to a protocol of 15 internet communication, in response to requests sent in said LAN from said terminals.