EP1943638A1 - Method of managing fonts in multimedia scenes and corresponding computer program and terminal - Google Patents

Abstract

The invention relates to a method of managing fonts in a radio communication terminal (10) which can receive fonts in order to render contents on a screen. According to the invention, one such method involves the use of the following elements in the terminal (10), namely: a font database (14) which lists all of the fonts or font portions stored by the terminal (10) and which matches at least one management parameter with each of the fonts; and a set of font management commands, which is transmitted in a multimedia data flow.

Description

 Method for managing fonts within multimedia scenes, corresponding computer program and terminal

1. Field of the invention

The field of the invention is that of applications, in particular embedded on radiocommunication terminals, for example of the radiotelephone type, PDA (in English "Personal Digital Assistant", in French

"Personal digital assistant"), laptop, etc., which requires a representation of the signals which compose it, for example in the form of one or more multimedia scenes, formed of a spatio-temporal arrangement of graphic objects. .

More precisely, the invention relates to the optimized and dynamic management of fonts within such terminals, for an optimal rendering of graphic or multimedia scenes transmitted by a content server terminal, on client terminals having solicited them, when objects textuals are used or called in the latter.

2. Prior Art

Among the known solutions of the prior art, several font representation formats have been developed.

None of these formats, however, provide a mechanism for managing information on the fonts that have been previously selected by the designer or the author of a graphic representation, for example a multimedia scene, to write text in the latter. (a logo, a brand, a slogan, etc. for example).

Among the most advanced formats, especially dedicated to the continuous loading (or "streaming" mode) of fonts

(or fonts), parts 17 and 18 of the MPEG-4 standard (ISO / IEC 14496-17 -

"Information technology - Coding of audio-visual objects - Part 17 and ISO / IEC

14496-18 - "Information technology - Coding of audio-visual objects - Part 18" describe the mechanisms for enriching fonts and associating content with a particular font for the return of objects textual in a scene MPEG-4, compression and streaming type fonts "OpenType", for green transmission a client terminal.

However, in the MPEG-4 standard, font management is performed independently of the receiving terminal which must render the MPEG-4 multimedia scene. The font or fonts defined in the scene to be rendered are systematically transmitted to the receiving terminal by a terminal server contents or graphic scenes, regardless of whether this receiving terminal has the ability to receive and return the font of characters transmitted within the corresponding graphic scene (for example, limited memory space).

Such an approach to managing fonts within the meaning of parts 17 and 18 of the MPEG-4 standard therefore does not allow a receiving terminal to effectively manage a set of fonts, nor even to characterize them by using properties. temporal, duration or characteristics related to the multimedia contents to be restored.

Conventionally, therefore, the only techniques that can manage information on fonts previously defined for use in a graphics scene use basic methods of permanent storage. They suffer from a lack of flexibility most often resulting in the impossibility of downloading pieces of fonts when all or part of the fonts stored in a client terminal become obsolete, or by difficulty in downloading new fonts necessary for the rendering of a graphic scene referring to it, on terminals having a limited memory, for example mobile communication terminals, telephones, digital television decoders, etc. In addition, a limited-memory terminal does not always have the capacity to replace a font that it can not download or that has specific properties that are incompatible with it, with another font with the closest properties and already stored in the terminal. Also known from IBM (EP 0 119 396) is a method for coupling an unformatted text data stream to a document presentation device (printer or screen).

Specifically, the method presented in this document allows the selection of a font from among a plurality of fonts defined for different document presentation devices, based on font identifiers to be used received in the text data stream.

However, the method described in this document is not directly implemented in a radiocommunication terminal, and is not suitable for rendering multimedia content but text data.

Finally, the document KUWATA ET AL (US 2005/080839) describes a system for listing fonts on a network server and making them available to the computers that connect to it.

Specifically, such a system can store fonts and manage user queries, requiring fonts to display or print a document by choosing a particular font.

However, the system described in this document does not update any previously listed fonts, but provides a directory for backing up fonts that are accessible over a network. 3. Objectives of the invention

The invention particularly aims to overcome these disadvantages of the prior art.

More specifically, an object of the invention is to provide a font management technique in a radio terminal that takes into account the properties of a font to determine whether it should or can simply be used by a computer. terminal, of the radiocommunication terminal type in particular, for the reproduction of a multimedia scene referring to it.

Another object of the invention is to provide such a font management technique allowing a selective downloading of fonts from characters or portions of font, relative to the needs of rendering of a graphic scene, or more generally multimedia.

A further object of the invention is to provide such a technique which promotes an optimal and dynamic management of the fonts to be used at a terminal, for the reproduction of multimedia scenes.

Another object of the invention is to provide such a technique for storing in the memory of a terminal, only all relevant fonts for the rendering of graphic scenes.

A further object of the invention is to propose such a technique which is perfectly compatible with conventional font-decoding techniques, that is to say, which can easily be integrated in the majority of the graphic rendering devices equipping the terminals capable of rendering graphic scenes.

Yet another object of the invention is to provide such a font management technique which can be perfectly integrated with the graphics rendering device of a multimedia scene (eg a multimedia software player) and which allows a strong dependence between a graphic content to be rendered and the associated fonts.

Finally, a last objective of the invention is to provide such a technique that is relatively simple to implement and use, while remaining reasonable cost in terms of implementation and / or use.

4. Presentation of the invention

These objectives, as well as others that will appear later, are achieved by means of a font management method in a radio terminal capable of receiving fonts to render multimedia content on a screen .

According to the invention, such a method advantageously implements in the client terminal: a database of fonts listing all the fonts or portions of fonts stored by said terminal and associating with each of said fonts at least one management parameter;

a set of font management commands, said set of commands being transmitted in a multimedia data stream.

Such an approach according to the invention, adding management information to the fonts to be used or already stored in a terminal for the rendering of graphic scenes, or more generally multimedia, is both new and inventive, none another technique known to date does not offer this same advantage. Indeed, conventionally, when a new multimedia scene is requested by a client terminal with a multimedia scene server terminal, all the fonts referenced in the description file of said scene is necessarily downloaded, independently whether these fonts are already stored and therefore available without download inside the memory of the client terminal.

On the contrary, the method according to the invention offers the advantage of allowing a selective download of the fonts to be used either according to the technical capabilities of the radio terminal, or according to the description properties associated with the fonts already stored or else referenced in a new graphic scene.

This property information character fonts defined in the context of the method according to the invention are interpreted by the terminal prior to the return of textual objects of a multimedia scene, the terminal therefore choosing to use the same font characters already present in its memory, or to substitute a font referenced in a multimedia scene to be restored by another font already in memory and whose font properties are identical or are closest to the properties of the font referenced in said scene to be restored, or to download, if necessary, the new font. This approach makes it possible in particular to integrate in decision making at the terminal to download, delete or replace fonts already stored in the terminal, updated management parameters and not already known to the terminal. Preferably, the management parameters belong to the group comprising: parameters on the type of font, such as its proportional character or not;

- The life of the font, that is to say, the time of preservation of the latter in the terminal memory; priority parameters, including priority of use relative to other fonts; parameters on the characteristics of the font, including the memory space that it uses; - management parameters of subsets of the font; parameters defining conditions of use of the font;

- management parameters of intellectual property rights associated with the font.

It should be noted advantageously that the invention is concerned with the respect in particular of copyrights that can be associated with specific fonts since it allows to take into account parameters defining the intellectual property of the fonts used and therefore the conditions of use or of non-use of the latter without the prior consent of their respective authors. In this spirit, the terminal will be able to decide whether it is possible to memorize a font in a given period, or if on the contrary, this font is accompanied by parameters specifying that it can be used, but no case stored or reused in another context, including rendering of one or more multimedia scenes.

Advantageously, the method according to the invention implements a step of managing the memory space occupied by all the fonts of characters in the terminal, according to the age of the last use, the memory volume and / or a priority parameter for each font or portion of the font. Such an approach is particularly interesting for keeping in memory or the deletion in the latter of fonts or portions of fonts whose memory life time parameter would have a very high value but which would occupy a significant memory space, which would prevent the download or use of certain other fonts. In other words, if a font stored in the terminal has a high value of its lifetime parameter, but it occupies a memory space such that it prevents the download of a new font characters necessary for the optimal rendering of a multimedia scene, then the originally stored font can be intentionally erased from the memory of the terminal to be replaced by the new. Preferably, the set of commands comprises a transmission command ("cacheFont") of a font or a portion of a font for storage in the terminal, which makes it possible in particular to anticipate the use of a new font characters at a terminal, downloading it in the background and transparently for the user, on the terminal. Similarly and also advantageously, the command set includes an update command ("informFont") of a font or a portion of a font stored in the terminal.

Still in a similar fashion, the command set includes a delete command for a font or a portion of a font stored in the terminal.

These various commands of the command set allow efficient management of downloads and / or replacements and / or deletions of a set of fonts, known or unknown to the terminal, but necessary for optimal reproduction of the various multimedia scenes on the latter. . Also preferentially, at least one of the commands takes account of at least one of the parameters belonging to the group comprising: lifetime parameters; the name of the police; - information relating to portions of the policy; an address to which the police can be downloaded; font properties.

The invention also relates to a computer program product downloadable from a communication network and / or stored on a computer readable medium and / or executable by a microprocessor, and advantageously comprising program code instructions for the implementation of the aforementioned method of managing fonts in a terminal.

The invention also relates to a radiocommunication terminal adapted to receive fonts for rendering contents on a screen, which preferably comprises:

a database of fonts listing all the fonts or portions of fonts stored by said terminal and associating with each of said fonts at least one management parameter;

means for interpreting a set of font management commands, said set of commands being transmitted in a multimedia data stream.

Preferably, the management parameters belonging to at least some of the fonts managed by such a terminal belong to the group comprising: - parameters on the type of font, such as its proportional character or not; font lifetime settings, that is, retention time in the terminal;

- priority parameters, compared to other fonts; parameters on the characteristics of the font, including the memory space that it uses; subassembly management parameters of the font; intellectual property rights management parameters associated with the policy; parameters defining conditions of use. Preferably, such a terminal according to the invention advantageously comprises means for managing the memory space occupied by all the fonts in the terminal, in particular in the memory thereof, depending on the age of the last use, size and / or priority setting for each font or portion of the font.

Also advantageously, such a set of font management commands, transmitted in a multimedia data stream, notably but not exclusively includes a transmission command ("cacheFont") of a font or a portion of a font in view storage in the terminal, an update command ("informFont") of a font or a portion of a font stored in the terminal and a delete command ("delete") of a font or a portion of the font stored in the terminal.

5. List of Figures Other features and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment, given as a simple illustrative and non-limiting example, of FIG. illustrating the general principle of management of the fonts within a mobile radio terminal of the method according to the invention, in the context of an example of modification of a graphic scene comprising textual objects.

In the example of Figure 1, the user of a mobile phone (10) wants to consult a service giving him the weather of the day. For reasons of simplification of the example, the multimedia scene (11) of access to this weather service is rendered here intentionally very succinct and includes a text object (13) interactive device in the form of a clickable text object "Weather of the day", rendered on the screen by means of a font available in the memory (14) of the terminal (10).

The user selects the "Weather of the day" link, which causes the terminal (10) to send a request (18) to a terminal (15) multimedia content server hosting the file (16) description of the multimedia scene of the "weather of the day" service. This description file contains, for all its textual objects, data (17) describing the fonts by means of which they will have to be rendered on the terminal (10), for example in coherence with a graphic charter defined by the authors weather service.

In response to the request (18) of the client terminal, the terminal (15) server returns a stream (19) containing binary file (16) description of the scene corresponding to the "Weather of the Day" and data (17) information relating to the fonts to be used by the terminal.

Upon receipt of the stream (19), the terminate (10) interprets the character description data (17) to be used.

At first, it looks (106) in its database (14) of font data, if the data (17) description correspond to a font already stored, or else if a font already stored has properties similar or identical to those (17) described in stream (19). If so, then the terminal (10) will not download the fonts described in the description file (16) of the multimedia scene describing the day's weather, but will display (102) the new scene (100) displaying the object (101) text "Sun" using the identical font available in memory, or a substitution font with identical or similar properties.

Otherwise, the terminal (10) will issue a request (103) for downloading the font required for the display of the object "Sun", the latter being available for example from a base (104) of font data hosted by the content server terminal (15), or at a address defined in the attribute "URL" of the data (17) of description of the font to be used.

The content server (15) returns (105) then the font to the client terminal (10). The latter will then memorize this new font in its memory or base (14) of font data, after releasing the memory space necessary for this storage.

Once the new font is placed in memory (14), the display (102) of the new scene (100) displaying the text object "Sun" is rendered with the correct font. 6. Description of an embodiment of the invention

The present invention therefore relates to a font management technique in a radiocommunication terminal, capable of receiving fonts for rendering multimedia content on a screen.

The object of the invention is to describe a process for transmitting and decoding font management functions.

Many graphic scenes or more generally multimedia require in fact to be able to manage at the terminal, for their restitution as initially defined by their author, a base of fonts, associated with textual objects of the scene. Such management is accompanied in particular by the implementation of functions of storage, destruction, management of the expiry of validity, or the caching of these fonts, or even functions of modification of any or part thereof, and therefore, more generally, font management description functions for managing the storage, transmission and reuse of multiple fonts within a set of graphic scenes.

Such a technical approach of "low level" representation of the functions of "management" of fonts at terminal level, for example radiocommunication is both new and inventive in that it allows on the one hand to obtain a relatively fine interaction between scenes multimedia device to be rendered on a terminal and the associated fonts and, secondly, in that it allows a binary transport of the fonts or selected portions of the latter between a content server transmitting a graphic scene containing specific fonts and the terminal that receives them. Such an approach also makes it possible and advantageously to reduce the latency for the end user when rendering the graphic scenes and / or downloading the fonts necessary for the latter.

The invention applies to a large number of applications that require a representation of the signals that compose it in the form of a spatio-temporal arrangement of graphic objects, in contexts such as that described below.

A client terminal, for example a radiocommunication terminal, requests from a multimedia content server terminal (for example a graphic scene server) a graphic animation content.

The multimedia content server terminal sends back to the client terminal the requested content, which embeds in its description the spatiotemporal arrangement of the graphic objects.

In this content transmitted by the server terminal to the client terminal, font management functions are described relative to textual objects embedded in the description file of a graphic scene. They indicate in particular that a set of fonts will be stored in memory in the receiver and that it must remain accessible (or not) in response to a request from the same client terminal. When a font is needed, the value of the font is read and used within the client terminal.

It should be noted that this very general technique can be applied to practically all currently available graphic animation descriptions: MPEG-4 / BIFS (in English "Binary Format Scene", in French "binary format for stage"); the SVG language, for "Scalable Vector Graphics" in English; the SMIL language for "Synchronized Multimedia Integration Language" or "Multimedia integration language synchronized", the purpose of which is to allow the integration of multimedia elements within a web page; the XML event module, which aims to provide a consistent integration of event listeners and event handlers associated with the event interfaces of an object document model in DOM (for "Document Object Model" English, or "document object model" in French);

HTML, etc.

The method according to the invention also makes it possible to manage the memory space occupied by all the fonts that are used by the graphical graphics rendering engine, within the client terminal, so that when a font of characters becomes obsolete in this set, vis-à-vis graphics or multimedia scenes restored, it is removed from the current set of stored fonts, and eventually replaced in whole or in part by a font more current character, or required for the rendering of a new graphic scene.

The method according to the invention also makes it possible to manage the temporary saving of the fonts and to take account of this backup during the rendering of a graphic scene, so as to avoid a new download of the font if that This is already included in the set of fonts available on the terminal in question, which also promotes the reduction of latency that the user can sometimes see when returning a graphic scene on his terminal.

It also makes it possible to manage the enrichment and the updating of subset of fonts within a graphic scene, or even the replacement of font or font subsets in a constrained terminal.

More specifically, as part of the font management method according to the invention, a set of commands is used to modify a set of properties of graphic objects using text in a scene at a given time.

The commands that must be executed simultaneously are grouped together in the same data packet during the transmission of the scene description file, for example by means of an "AccessUnit" command in MPEG-4 / Systems, which is part of the part of a scene replacement command "SceneReplace", or in a RTP packet, for "Real-time Transfer"

Protocol "in English or" real-time transfer protocol "in French.

Such commands are transmitted when necessary by the content server to the client terminal that will interpret them. They are of different types.

A first command "cacheFont" makes it possible to send in advance, in relation to a rendering of a graphic scene, a font which will then be available in the memory of the client terminal as soon as a request for such a font is made by the terminal . This is an anticipatory approach in which a font is cached in the terminal for later use.

This request can be made either by a user interaction or as part of a rendering of text using this font at the time of the rendering of a graphic scene. As illustrated below, the command "cacheFont" can be directly embedded in the description file of a scene, as follows:

<Scene>

[....] <Insert> <Transform>

<Audio DEF = "Local: scene.new_sound.rendering" startTime = "NOW" streamID = "4" trackID = "4" source = "velo_default $ 2.3gp" />

</ Transform> </ Insert>

<cacheFont TTL- 2 months 'FontName- title_font' FontSubSetID = '0'

URL = http: //serverfont.stz.com/title_font '>

<Data> "specifies additional information about the font" </ Data>

<Properties>

<param name = "closetoFontName" value = "Arial" />

<param name = "priority" value = "High" />

<param name = "vendor" value = "Adomedia" /> </ Properties>

</ CacheFont>

[...]

A "cacheFont" command can thus be executed by the client terminal at any time to store a given font. This command is accompanied by a number of parameters, such as the expiration date of the font retention in memory following the execution of this command, defined according to the time of receipt of the font and the lifetime of the latter in memory beyond which, the font in question is automatically deleted. As specified above, among the different attributes of the order

"CacheFont" defined in the context of the invention, may be mentioned:

"TTL": the validity period in memory of a font with the command "cacheFont"; "FontName": the unique name of the font that identifies the font among the different fonts available at a given moment within a terminal;

"FontSubSetlD": This attribute specifies the subset of the font identified by the "FontName" attribute;

"URL": the place from which the font data can be retrieved;

"Properties": the list of parameters expressing properties of the font, for example the language associated with the font; - "Data": additional information data concerning the font.

Following the execution of a "cacheFont" command, it is possible that the font in question can not be stored in the memory of the client terminal when the latter is already full or that the remaining memory space available on the terminal for storing this new font be insufficient.

As a result and in a first scenario, the client terminal will then use the parameter "URL" of the command to retrieve this font later at the address specified by this parameter, since the restitution of a graphic or multimedia scene will require it.

In a second scenario, if this "URL" parameter, or even the "data" parameter is not entered in the "cacheFont" command, the client terminal will then interpret the fact that the font is not available for a subsequent download and therefore, that it must take into account the attribute "properties" to determine the font with the properties closest to the identifier font associated with the command "cacheFont" and to substitute it for this last at the moment of rendering a scene. A second "informFont" command makes it possible to update all or part of the information relating to a font already stored in the client terminal.

Such a command can also be used to indicate that a font already present in the memory of the client terminal already satisfies the properties listed in the attribute "Properties" that can accompany it, which allows the author of graphic scenes or multimedia to more simply manage the substitution of fonts within a scene to be rendered on a radiocommunication terminal, at a given time. Among the attributes of the update command, are also defined:

"TTL": the validity period in memory of the cached font to be updated; "FontName": the unique name of the font to be updated; - "FontSubSetlD": This attribute specifies the subset of the font identified by the "FontName" attribute; "URL": the place from which the font data can be retrieved;

"Properties": the list of parameters expressing properties of the font, for example the language associated with the font;

"Data": additional information data concerning the font.

A third delete command "Delete" deletes the memory area identified by the "FontName" and "FontSubSetlD" attributes of a font stored in a client terminal, which has the effect of rendering the font of characters thus deleted inaccessible without a new download of the latter and thus, to release the corresponding memory space at the terminal.

These different font management commands defined in the context of the method according to the invention are used by the terminal of radiocommunication for the management of fonts preliminary to or in the course of restitution of a graphic or multimedia scene.

Thus, in a first step, the terminal retrieves from a content server terminal, by means of a network connection, description data of one or more graphic scenes that it must restore.

These data are then decompressed to obtain a description of the graphic objects directly usable by the audio and graphics rendering engine of the terminal, the latter taking charge of the composition of graphic objects together to create a graphic scene corresponding to the description data.

During the composition phase of the various objects of the graphic scene, the terminal interprets the font management commands that accompany them, before proceeding to display the various textual objects included in the scene, either with a new font, or in using a substitution font already present in the memory of the terminal with close or identical properties.

The interactions of the user on the graphic or multimedia scene thus restored are then taken into account (manipulation of a pointer, pressing of a physical or software key, etc.).

As the user executes interaction with a scene, graphic changes requiring the establishment of a network connection to a local or remote information source may be initiated, among which assigning or using a new font for displaying specific text, for example.

Thus, following a request from the user, the computer program product executing the method according to the invention, will initiate a network connection to a content server terminal so as to recover a bit stream to be analyzed subsequently by multimedia player client terminal, so as to create or modify a graphic scene containing text elements to be rendered according to a predetermined font and according to the font management commands contained in the bit stream. The advantage of the management method according to the invention can therefore be summarized in four main points: the reduction of the memory space used, since only the set of fonts relevant for the rendering of the graphic scenes is placed in memory in the memory. terminal; a gain in the use of the processing resources by the use of a font management method in accordance with the process of rendering graphical commands which favors its relatively simple implementation on a radio terminal having memory capacity and often limited treatment, for example a mobile phone; compatibility with conventional graphics or multimedia scene decoding techniques, because of its possible integration into most graphics rendering devices; - the gain in expressiveness in the context of the creation of graphic or multimedia content, through the implementation of a technique that can be directly integrated into the process of rendering graphic commands and fostering a strong dependence between the graphic or multimedia content to rendering and using the fonts referenced within that content.

Claims

1. Fonts management method in a terminal (10) for radiocommunication, able to receive fonts for rendering multimedia content on a screen, characterized in that it implements, in said terminal (10) :

a base (14) of data of fonts listing all the fonts or portions of fonts stored by said terminal (10) and associating with each of said fonts at least one management parameter;

a set of font management commands, said set of commands being transmitted in a multimedia data stream.

2. Fonts management method according to claim 1, characterized in that said management parameters belong to the group comprising:

- parameters on the type of font, such as its proportional character or not; font lifetime settings, i.e., retention time in said terminal;

- priority parameters, compared to other fonts; parameters on the characteristics of the font, including the memory space that it uses;

- management parameters of subsets of the font;

- Intellectual property rights management parameters associated with the policy; parameters defining conditions of use.

3. Fonts management method according to any one of claims 1 and 2, characterized in that it implements a step of managing the memory space occupied by all of said fonts in said terminal , depending on the age of the last use, the memory volume and / or a priority parameter for each font or portion of the font.

4. Fonts management method according to any one of claims 1 to 3, characterized in that said set of commands comprises a transmission command of a font or a portion of police for storage in said terminal.

5. Fonts management method according to any one of claims 1 to 4, characterized in that said set of commands comprises an update command of a font or a portion of police stored in said terminal .

6. Fonts management method according to any one of claims 1 to 5, characterized in that said set of commands comprises a delete command of a font or a portion of the font stored in said terminal.

7. Fonts management method according to any one of claims 1 to 6, characterized in that at least one of said commands takes into account at least one of the parameters belonging to the group comprising: lifetime parameters ; the name of the police; information relating to portions of said policy; an address to which said font can be downloaded; - properties of said font.

8. Computer program product downloadable from a communication network and / or stored on a computer readable medium and / or executable by a microprocessor, characterized in that it comprises program code instructions for the implementation of the method for managing fonts in a terminal, according to any one of claims 1 to 7.

9. Radiocommunication terminal adapted to receive fonts for rendering contents on a screen, characterized in that it comprises:

a database of fonts listing all the fonts or portions of fonts stored by said terminal and associating with each of said fonts at least one management parameter; means for interpreting a set of font management commands, said set of commands being transmitted in a multimedia data stream.

10. Radiocommunication terminal according to claim 9, characterized in that said management parameters belong to the group comprising:

- parameters on the type of font, such as its proportional character or not; font lifetime settings, i.e., retention time in said terminal; - priority parameters, compared to other fonts; parameters on the characteristics of the font, including the memory space that it uses;

- management parameters of subsets of the font;

- Intellectual property rights management parameters associated with the policy; parameters defining conditions of use.

11. Radiocommunication terminal according to any one of claims 9 and 10, characterized in that it comprises means for managing the memory space occupied by all of said fonts in said terminal, according to the age of last use, size, and / or priority setting for each font or portion of the font.

12. Radiocommunication terminal according to any one of claims 9 to 11, characterized in that said set of commands comprises a transmission command of a font or a police portion for storage in said terminal.

13. Radio communication terminal according to any one of claims 9 to 12, characterized in that said set of commands comprises an update command of a font or a police portion stored in said terminal.

14. Radiocommunication terminal according to any one of claims 9 to 13, characterized in that said set of commands comprises a delete command of a font or a portion of police stored in said terminal.