Abstract:
This invention relates to a telecommunications system for transmitting multimedia messages from a first telecommunications terminal to a second telecommunications terminal via a telecommunications network. The inventive system comprises a message server provided for receiving the messages from the first terminal and for transmitting them to the second telecommunications terminal. The message server comprises means for developing a message broadcasting program to be downloaded by the second terminal for broadcasting the messages according to the characteristics of said second terminal.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is the U.S. national phase of the International Patent Application No. PCT/FR2003/002718 filed Sep. 15, 2003, the entire content of which is incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     The invention concerns telecommunications systems and in particular relates to transmitting multimedia messages from a first telecommunications terminal to a second telecommunications terminal by using a telecommunications network. 
     The invention in particular applies to transmitting messages to a mobile telephone set, but also generally to transmitting multimedia messages to any type of telecommunications terminal of the telephone set, personal assistant (PDA), microcomputer type, . . . 
     As conceivable, transmitting of multimedia messages, in particular towards mobile type telephone handsets or to personal assistants, generates problems for restoring messages to the extent that for reasons of bulkiness, man-machine interfaces with which such terminals are provided, do not allow the whole of the information contained in such messages to be clearly restored. This problem is increasingly posed when the message is elaborated from a microcomputer and is intended for a mobile cell telephone. Indeed, in this case, the message must be converted into a format compatible with the end terminal in order to be able to suitably restore the whole of the information contained in the message. 
     Moreover, implementation of a multimedia messaging service MMS, which allows the users of mobile units to receive or send messages which may contain text, images and sound, involves the use of software client stored onboard the mobile unit in order to load and restore messages. Now, such a client is difficult to develop. A given version of the client MMS supports the whole of the provided functionalities. In the case of adding new functionalities to the MMS service, a user carrying a mobile set in which a preceding version of the client MMS is loaded, will not be able to benefit from the new functionalities. In addition, in the case of failure of the onboard software client expressed by faulty operations, it is difficult to correct these faults from a distance. 
     Finally, there are different implementations of client MMSes, so that it is not possible to provide the guarantee to the originator that the message which he/she has composed, will exactly be displayed in the same way on all the mobiles to which his/her MMS message is addressed. 
     In view of the above, the object of the invention is to provide a method for a telecommunications system with which the aforementioned drawbacks may be overcome. 
     SUMMARY OF THE INVENTION 
     According to the invention, a telecommunications system for transmitting multimedia messages from a first telecommunications terminal to a second telecommunications terminal via a telecommunications network is therefore provided, comprising a message server provided for receiving messages from the first terminal and for transmitting them to the second telecommunications terminal. 
     The message server includes means for elaborating a program for broadcasting messages intended to be downloaded by the second terminal in order to broadcast the messages according to the characteristics of said second terminal. 
     Thus, the message broadcasting program which undertakes to display the messages defined by the originators, and which is elaborated on demand from end users according to the characteristics of the terminal, is updated permanently and it allows the message to be adapted to the nature of the different end terminals. 
     According to another feature of the telecommunications system according to the invention, the system further includes a short message service centre for transmitting a message notification to the second terminal after receiving a message via the message server. 
     According to another feature of the invention, the message server includes means for identifying the type of terminal to which a message is addressed and a database in which a set of characteristics of said terminal is loaded for each type of terminal, the broadcasting program being elaborated by the message server according to the characteristics of the second identified terminal. 
     For example, the first terminal includes an Internet browser which is used for elaborating messages. 
     Alternatively, the first terminal includes a software application for creating messages, downloaded beforehand, stored in memory in a hardware resource management platform of said terminal. 
     According to an advantageous embodiment, the message server communicates with a database of a telecommunications operator for elaborating the broadcasting program from data relating to the first terminal or to the bearer of the first terminal, extracted from the database. 
     Further, according to another feature of the invention, the broadcasting program may include instruction codes capable of causing the display on a screen of the second terminal, of a menu for selecting procedures to be executed by said second terminal and initiating execution of said procedures. 
     According to the invention, a method for transmitting a multimedia message from a first telecommunications terminal to a second telecommunications terminal, via a telecommunications network by means of a telecommunications system as defined above, is also provided, characterized in that it includes the following steps:
         elaborating said message by means of the first telecommunications terminal;   transmitting the message to the message server;   transmitting a message notification to the second terminal;   emitting via the second terminal a request for broadcasting said message;   elaborating a message broadcasting program in response to the broadcasting request depending on the characteristics of the second terminal;   downloading the broadcasting program; and   applying the broadcasting program.       

     According to an embodiment, during the step for elaborating the broadcasting program, a field containing an indication of the terminal type to which the second terminal belongs, is extracted from the broadcasting request, the broadcasting program being elaborated from characteristics of the second terminal extracted from a database in which a set of characteristics of said terminal is loaded for each type of terminal. 
     According to another feature of the method according to the invention, the notification of the message is performed by transmitting a short message via a short message service centre. 
     According to an advantageous embodiment, the broadcasting program is elaborated from data extracted from a database of a telecommunications operator in which information relating to the first terminal or to the bearer of said first terminal is stored. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Other objects, features and advantages of the invention will become apparent upon reading the following description, only given as a non-limiting example and made with reference to the appended drawings wherein: 
         FIG. 1  is a block diagram illustrating the general architecture and the operation of a telecommunications system according to the invention; 
         FIG. 2  is a view of a computer screen on which a man-machine interface is displayed, allowing the elaboration of a multimedia message; 
         FIG. 3  is a view of the man-machine interface of  FIG. 2  used for selecting photographs for elaborating the multimedia message; 
         FIG. 4  is a diagram illustrating the elaboration of a multimedia message by means of a mobile cellular telephone set. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     In  FIG. 1 , the general structure of a telecommunications system according to the invention is illustrated. This system is intended for transmitting a multimedia message from a first telecommunications terminal  10  to a second telecommunications terminal  12 . 
     As seen in  FIG. 1 , the first terminal may consist of any type of terminal capable of communicating with the end terminal  12 , and of elaborating and transmitting a multimedia message to this terminal  12 . Thus, for example, the first terminal  10  may consist of a mobile telephone set  14 , a microcomputer  16  or even a personal assistant (PDA), . . . however the invention is also applied to elaborating and transmitting multimedia messages from a server centre of a service provider. 
     As regards the second telecommunications set  12 , it will be noted that the invention in particular applies to transmitting messages to a mobile telephone set. However, it is conceivable that the invention only applies to elaborating and transmitting multimedia messages to any type of telecommunications sets, such as a personal assistant (PDA) or a fixed telephone set. 
     As is seen in  FIG. 1 , the telecommunications system essentially includes a message server  18  intended for receiving messages from the emitting telecommunications set  10  on the one hand, and for giving back this message to the end set  12 . The message server  18  communicates with the emitting set  10  and with the end set  12  via the telecommunications network to which the emitting and receiving sets belong respectively. Thus, if the emitting and receiving sets each consist of a mobile telephone set, the message server  18  communicates with the sets via the cellular telephone network. 
     The telecommunications system is moreover provided with a short message service centre SMSC  20  intended to notify the end terminal  12  of the receipt of a message by the message server  18 . For example this notification is performed by means of a short SMS (Short Message Service) message. However it will be noted that such a notification may also be performed by a wap push type service or by electronic mail of the e-mail type, according to the nature of the terminal  12  to which the message is addressed. 
     To restore the received message, the message server  18  is provided with a compiler providing the creation of a broadcasting program conveying the data to be restored to the addressee, and which is intended to be executed within the end set  12  so as to allow the message to be consulted by a user carrying the set  12 . 
     According to a feature of the invention, this broadcasting program is elaborated as a response to a broadcasting request emitted by the end set  12  and is generated so that the message may be restored according to the characteristics of the set  12 . 
     For this purpose, as this will be described in detail subsequently, the message server  12  includes a database in which, for each type of end mobile, a set of characteristics representative of the particularities and capacities of the set is stored, these characteristics being used for elaborating the broadcasting program. Thus, in response to a download request emitted from the end terminal  12 , the message server  18  extracts from the header of the request a field identifying the type of terminal and recovers from the base the corresponding characteristics of the set emitting the request. These characteristics are then used for elaborating a broadcasting program, or for adapting a broadcasting program elaborated beforehand so as to generate through compilation, a broadcasting program which contains the set of instruction codes used for restoring the message by the end set  12  by using the functionalities and the capacities of this set  12 . 
     As indicated earlier, this system allows a multimedia message to be elaborated and transmitted to a remote set  12  preferably consisting of a mobile cellular telephone set. The message is elaborated by an emitting set  10  either consisting of a computer or of a mobile telephone set or even of a server of a service provider. According to these three embodiments, the system operates similarly. Indeed, with reference to  FIG. 1  in which arrows illustrate operational phases of a method for transmitting multimedia messages, the system which has just been described, is used in the following way. 
     To proceed with elaborating a message, multimedia bricks loaded into memory beforehand in the emitting set  10  should be assembled. In the case of using a microcomputer or a mobile telephone set, this assembling may be performed either by means of a web browser as regards the microcomputer  16 , or by means of a wap (Wireless Application Protocol) type or web type browser as regards the use of a mobile telephone set. For example, during the creation of the message, the user selects and assembles a sequence of files each corresponding to images or to video and associates each file with text or a sound file. He/she further selects the attractive effects which he/she wishes to provide to his/her message, for example by selecting the changeover mode of the screens, or by programming an activation for each screen of specific functions of the set  12 , for example activation of the buzzer, of the back-lighting of the keyboard, and/or of the screen. The message may also be elaborated by means of an application downloaded beforehand with which files may be assembled and the presentation mode of the messages may be defined in order to make the creation of multimedia contents more user-friendly. 
     As is seen in  FIGS. 2 and 3 , in which man-machine interface examples used for elaborating a message from the computer  16  are illustrated, a multimedia message to be sent to the mobile set  12  may be generated by means of an interface shown on the screen of the computer  16 . Such an interface for example includes a first window  24  used for selecting video contents or an image, associated with an area  26  allowing the video contents or the selected image to be viewed and with a control area  28  allowing the size of the photograph or of the video to be changed. If necessary a window  30  allows a text intended to be superimposed on the images to be entered. It is associated with a first field  32  allowing the name of the addressee to be entered and with a second field  34  allowing the ISDN number of the mobile set  12  to be entered, i.e., the MSISDN number of the addressee. Finally, a control button  36  allows the sending of the message to be controlled. 
     As is seen in  FIG. 3 , selecting the window  24  allows access to a window  38  for viewing the set of available files and selecting the contents to be sent. 
     As indicated earlier, during this phase for elaborating the message, it is also possible to generate a sequence of successive screens each corresponding to one image or to video contents associated with text or with audio contents, and the changeovers of which, for example as cross-fadings, or generally the presentation mode, for example an activation of specific functions of the set  12 , are selected by the user. 
     After creation of the message and actuation of the control button  36 , the multimedia contents are sent to the message server  18  (step  40 ). In response, the message server  18  informs the short message service centre  20  that it has received such a message (step  42 ). The arrival of such a message is then notified to the remote user or to all the addressees (step  44 ), as a short message  22 . 
     When the user wishes to read the message, a broadcasting request is then transmitted to the message server  18  (step  46 ). In response, the server  18  extracts from the header of the broadcasting request, the indication of the terminal type to which the mobile set  12  belongs and then extracts the list of characteristics of the set  12  from the database. The broadcasting program is then compiled from these characteristics and is then transmitted to the end terminal  12  (step  48 ). Execution of this broadcasting program within the terminal  12  then causes the message to be presented to the addressee and this by using the available functionalities of the terminal  12 . 
     With reference to  FIG. 4 , a similar procedure is used for elaborating and transmitting a multimedia message by means of a mobile cell telephone set  14 . 
     Indeed, this procedure begins with a first step  50  for selecting video contents or an image, followed by a step  52  during which the user adds text to the thereby elaborated message and selects the list of addressees. It will be noted that an interface similar to the one described earlier with reference to  FIGS. 2 and 3 , but with a simplified structure, may be used for elaborating the message. During the next step  54 , the message is sent to the message server which notifies it to the end user via the short message service centre  20 . When the remote user wishes to recover the message, a broadcasting request is then automatically sent to the message server  18 , which elaborates the broadcasting program and transmits this program to the end terminal  12  (step  56 ). 
     As in the exemplary embodiment described earlier with reference to  FIGS. 2 and 3 , this procedure according to which the message is elaborated from a mobile set, enables messages of different natures to be created, for example a sequence of images or video contents if necessary associated with text information, for which the presentation mode may be predefined, for example by selecting the sequencing mode of the images or by providing activation of the specific functions of the set. 
     Moreover, the invention which has just been described, also applies to elaborating and transmitting messages by means of any type of telecommunications equipment  10  which is suitable for such an application or of any type of computer equipment  10 , such as a server. 
     It will be noted that the embodiment of the method for transmitting multimedia messages using a server for elaborating and broadcasting such a message is similar to the operating mode described earlier. However, in this case, all the actions are performed in an automated way. 
     It will also be noted that in the different embodiments described earlier, the elaboration of the broadcasting program may be performed according to different techniques. 
     Thus, for example, the broadcasting program may be elaborated as a midlet type application developed by means of a specific platform incorporated into the message server. For example, the midlet may consist of a Java® type application generated by means of a J2ME (Java 2 Micro Edition) platform developed by Sun Microsystems, the mobile set being also provided with a corresponding J2ME platform for executing the broadcasting program. 
     However, such a broadcasting program may also be elaborated by means of other techniques, for example by means of specific platforms such as the Symbian OS® platforms developed by Symbian or Smartphone® developed by Microsoft.