FIELD OF THE INVENTION 
     The present invention generally relates to the display of information on wireless devices and more particularly relates to a method for displaying moving items in a user interface and to such a method for use within a device for use with a wireless communications network. 
     BACKGROUND 
     It is known to use a mark-up language to animate an object between two values in a linear or otherwise predetermined manner. It is also known to use graphical user interfaces for example such as that provided my Macromedia Flash™ to generate a graphical representation of an arbitrary animation profile. 
     The problem remains, how to control animation using a mark-up language according to an arbitrary profile when displaying a moving object defined by a mark-up language. 
     SUMMARY OF THE INVENTION 
     The invention provides a method of displaying a moving object in which the object is part of a user interface defined by a mark-up language and in which the movement of the object is defined by an arbitrary profile. The profile may be an attribute within a mark-up tag defining animations. 
     In one aspect the profile comprises a sequence of at least one value defining a proportion of a distance between a start point and an end point the object will move at least one point in time. The proportion may be defined to be less than 0% or greater than 100% to indicate movement outside a range defined by the start point and the end point. 
     In one aspect there is a plurality of points in time which are linearly spaced for a duration between a start time and an end time, in which case the duration between said points in time will be equal to the duration divided by the number of values in the sequence. 
     According to the invention there is also provided method of achieving complex animation effects in a user interface defined by a mark-up language by defining a movement of one or more objects. 
     According to another aspect of the invention there is also provided a device comprising a display and a user interface defined by a mark-up language, in which moving objects are displayed in operation according to an arbitrary profile. The profile may be an attribute within a mark-up tag defining animations. 
     In one aspect the profile comprises a sequence of at least one value defining a proportion of a distance between a start point and an end point the object will move at least one point in time. The proportion may be defined to be less than 0% or greater than 100% to indicate movement outside a range defined by the start point and the end point. 
     In one aspect there is a plurality of points in time which are linearly spaced for a duration between a start time and an end time such that the duration between said points in time will be equal to the duration divided by the number of values in the sequence less one. 
     According to a further aspect of the invention there is provided a device comprising means for displaying a user interface; and means for storing an arbitrary profile; in which the user interface is defined by a mark-up language, in which moving objects are displayed in operation according to the arbitrary profile. The profile may be an attribute within a mark-up tag defining animations. 
     In one aspect the profile comprises a sequence of at least one value defining a proportion of a distance between a start point and an end point the object will move at least one point in time. The proportion may be defined to be less than 0% or greater than 100% to indicate movement outside a range defined by the start point and the end point. 
     In one aspect there is a plurality of points in time which are linearly spaced for a duration between a start time and an end time such that the duration between said points in time will be equal to the duration divided by the number of values in the sequence less one. 
     According to another aspect of the invention there is provided a computer program product comprising: computer-readable medium comprising: at least one instruction for displaying a moving object in which the object is part of a user interface defined by a mark-up language; at least one stored arbitrary profile defining the movement of the object. The profile may be an attribute within a mark-up tag defining animations. 
     In one aspect the profile comprises a sequence of at least one value defining a proportion of a distance between a start point and an end point the object will move at least one point in time. The proportion may be defined to be less than 0% or greater than 100% to indicate movement outside a range defined by the start point and the end point. 
     In one aspect there is a plurality of points in time which are linearly spaced for a duration between a start time and an end time such that the duration between said points in time will be equal to the duration divided by the number of values in the sequence less one. 
     According to another aspect of the invention there is provided a server comprising a publishing component and a content server component, in which the content server component is arranged to receive user interface data from content feeds and in which the publishing component is arranged to package the user interface data for sending to one or more wireless devices, wherein the user interface data comprises a user interface defined by a mark-up language and in which movement of the object is defined by an arbitrary profile. The profile may be an attribute within a mark-up tag defining animations. 
     In one aspect the profile comprises a sequence of values defining a proportion of a distance between a start point and an end point the object will move at lease one point in time. The proportion may be defined to be less than 0% or greater than 100% which will indicate movement outside a range defined by the start point and the end point. 
     In one aspect there is a plurality of points in time which are linearly spaced for a duration between a start time and an end time such that the duration between said points in time will be equal to the duration divided by the number of values in the sequence less one. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will now be described, by way of example only, with reference to the accompanying drawings, in which: 
         FIG. 1  shows a schematic depiction of a system; 
         FIG. 2  depicts in greater detail the structure and operation of a server; 
         FIG. 3  shows a schematic depiction of software for wireless devices; 
         FIGS. 4   a - 4   c  illustrate schematically arbitrary animation profiles; and 
         FIGS. 5   a - 5   e  illustrate schematically further arbitrary animation profiles. 
     
    
    
     Like references to elements within the drawings refer to like elements unless explicitly stated otherwise. 
     DETAILED DESCRIPTION 
     The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. 
     In this description, the term “application” may also include files having executable content, such as: object code, scripts, byte code, markup language files, and patches. In addition, an “application” referred to herein, may also include files that are not executable in nature, such as documents that may need to be opened or other data files that need to be accessed. 
     In this description, the terms “communication device,” “wireless device,” “wireless telephone,” “wireless communications device,” and “wireless handset” are used interchangeably. With the advent of third generation (3G) wireless technology, more bandwidth availability has enabled more electronic devices with wireless capabilities. Therefore, a wireless device could be a cellular telephone, a pager, a PDA, a smartphone, a navigation device, or a computer with a wireless connection. 
     Referring now to  FIG. 1 , an exemplary system  105  comprises server  100 , content toolset  200 , wireless devices  400 , operational support systems (OSSs)  700 , content feeds  500  and user interface (UI) sources  600 . In use, the server  100  communicates content data and UI data to the wireless devices  400 , each of which include software package  300 . The server  100  interfaces with OSSs  700 , with the OSSs  700  being those conventionally used to operate wireless networks, for example billing, account management, etc. The server  100  further interfaces with the content toolset  200 : the content toolset  200  receives data from UI sources  610 ,  620 , . . . , and packages the UI data such that the server can transmit the packaged UI data to the software packages  300  within the wireless devices  400 . The server  100  receives data from a plurality of content feeds  510 ,  520 ,  530 , and this data is processed and packaged such that it can be sent to the software packages  300  or so that the wireless devices  400  can access the data using the software package  300 . 
     The exemplary system can be envisaged as being divided into three separate domains: an operator domain  50  comprises the systems and equipment operated by the mobile network operator (“MNO”); a user domain  60  comprises a plurality of wireless devices and a third-party domain  70  comprises the content feeds  500  and UI sources  600  that may be controlled or operated by a number of different entities. 
       FIG. 2  depicts in greater detail the structure and operation of server  100 . Server  100  comprises a publishing component  110  and a content server component  150 . The publishing component  110  comprises a database  111 , an import queue  112 , a content toolset interface  113 , a user interface  114  and a catalogue  115 . In operation, the publishing component  110  receives content from the content toolset at the content toolset interface  113 . The content is presented in the form of a parcel comprising one or more trigs and one or more triglets. A trig is a user interface for a wireless device and a triglet is a data file that can be used to update, eg extend, or alter a trig. If a parcel comprises more than one trig then one of the trigs may be a master trig from which the other trigs may be derived. 
     The publishing component user interface  114  can be used to import a parcel into the database  111 , and this process may cause references to each trig and triglet to be loaded into the import queue  112 , which may comprise references to a plurality of parcels  210   a ,  210   b , The contents of the parcel may be examined using the user interface  114 , and the contents of one of the parcels can be passed to the catalogue  115 . 
     Update channels may be referenced by trigs to control the delivery of content. An update channel comprises a URL which is a link to a resource on the associated domain that contains a triglet. The URL can be polled at predefined intervals and the HTTP GET function used to access a parcel comprising the triglet (it will be readily appreciated that other transport schemes may be used with the present invention, for example SyncML, or SMS, or cell broadcast for small updates). The parcel comprising the triglet describes how a trig can be modified, e.g. replacing one or more images or text files used by the trig. The user interface  114  for the publishing component  110  enables an operator to define and control the update channels that exist for a domain, the URLs associated with each triglet on an update channel, and an association of each triglet with a corresponding update channel for a domain. As each triglet is associated with an update channel, an operator may enter the date and time that the update should be published, enabling a schedule to be set. 
     A content feed is similar to an update channel for which the content updates are automatically generated on a regular basis. A content feed is accessed by polling a URL, retrieving a parcel containing a triglet and applying it to the trig. However because of the different nature of manually constructed triglet updates and automatically generated content, update channels and content feeds are managed separately. One of skill in the art may utilize other transport schemes may be used such as SyncML or OMA-DM (Open Mobile Alliance Device Management). 
       FIG. 3  shows a schematic depiction of exemplary software  300  for the wireless devices  400 , which comprises a mark-up language renderer  410 , update manager  420 , network communication agent  425 , resource manager  430 , virtual file system  435 , actor manager  440 , a plurality of actors  445 , native UI renderer  450 , support manager  460 , trig manager  465  and mark-up language parser  470 . 
     The software  300  may operate using TrigML, which is an XML application mark up language. The mark-up language renderer  410  renders the TrigML code for display on the wireless device  300 . The mark-up language renderer also uses the TrigML Parser to parse TrigML resources, display content on the device screen, and to control the replacement and viewing of content on the handset. 
     It may be desirable if content can be displayed in an interesting manner, one way in which this is achieved is by animation. In this context, animation means a visual effect which is applied to an object to be displayed. For example, an object may fly in from a side of the screen, may bounce off sides of the screen; fade from screen etc. one of skill in the art may devise countless animation schemes. 
     However, as the software operates using a mark-up language, in this case TrigML, an arbitrary profile may be defined by adding a profile tag to an XML tag defining animations (in TrigML, this is known as the anim tag). 
     In prior implementations of the anim tag, a property (for example, the x position) is animated between the start and end point in a linear manner. For example: 
     &lt;anim name=“x” value=“0:100” duration=“1000”/&gt; would produce an animation profile as shown in  FIG. 4   a.    
     The property x is animated between the values 0 and 100 over the course of one second (1000 ms). 
     In an improved method of animation the movement may be defined in terms of an arbitrary profile for example: 
     &lt;anim name=“x” values=“0:100” duration=“1000” Profile=“0; 5; 20; 50; 85; 95; 102; 98; 101; 99; 100/&gt; 
     Rather than animate in a linear manner such that x=100*t/1000 where t is time in milliseconds the animation follows an arbitrary profile. In this example the property x is animated from 0-5 over 100 ms, from 5-20 over 100 ms, then 20-50 over 100 ms etc. This results in an animation profile as shown in  FIG. 4   b.    
     In this example the animation defines a start point and an endpoint (0 and 100 respectively) and the profile comprises a sequence of values defining a proportion of the distance between the start point and the end point. 
     Therefore, if the start point and end point had been 40 and 240 respectively then the animation would appear as shown in  FIG. 4   c  (i.e. scaled and shifted accordingly). 
     Profile values may be greater than 100%, and they may also be less than 0%. In this instance, the movement occurs outside the range defined by the start point and the end point as will be seen in further examples with reference to  FIG. 5 . 
     In this particular example, the profile defines the proportion of the range which has been moved at fixed points in time where the points in time are linearly spaced between a start time (0) and an end time (the duration). In this case, the time duration between each proportion and each subsequent proportion defined in the profile will be equal to the duration divided by the number of elements defined in the profile less one. Therefore, the duration between the time taken to reach each proportion and the time taken to reach each subsequent proportion is 100 ms in the example above. 
     It may be possible to devise profiles where the points in time were not linearly spaced, for example a profile could comprise a sequence of values indicating how much time it takes to reach linearly spaced proportions of the defined range. It is even possible to define profiles where both the spatial positions and the points in time are not linear although these could be quite complex. 
     In other aspects of the invention, the start time may be equal to values other than 0. The duration may be defined in any convenient unit. 
     To illustrate the process further  FIGS. 5   a - 5   c  illustrate movement of a property or object defined by profiles in Table 1 (below): 
     
       
         
               
               
               
             
           
               
                   
                 TABLE 1 
               
               
                   
                   
               
             
             
               
                   
                 5a 
                 0; 10; 100 
               
               
                   
                 5b 
                 0; −5; 10; 100 
               
               
                   
                 5c 
                 0; 10; 80; 100 
               
               
                   
                 5d 
                 0; −5; 10; 10; 105; 100 
               
               
                   
                 5e 
                 0; 90; 105; 100 
               
               
                   
                   
               
             
          
         
       
     
     The new method of profiling allows arbitrary control of animated object using a mark-up language. Complex effects may be achieved which would have previously required much more complex animation. For example, the animation illustrated in  FIG. 4   a  would have taken ten separate animation elements. 
     Where data is accessed by means other than the file system, e.g. it is stored in a database, or it is generated on the fly by another software component, this scheme can still be used if a virtual file system  435  is used, which can map a file system interface onto the underlying provider of the data. This means the content can still be animated as described above, but the data can be provided in a method that enables efficient data storage and retrieval. 
     In one or more exemplary aspects, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or code on a non-transitory computer-readable medium. A non-transitory computer-readable storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media. 
     It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate aspects, may also be provided in combination in a single aspect. Conversely, various features of the invention which are, for brevity, described in the context of a single aspect, may also be provided separately, or in any suitable combination. 
     It is to be recognized that various alterations, modifications, and/or additions may be introduced into the constructions and arrangements of parts described above without departing from the spirit or ambit of the present invention.
The present invention relates to a method for displaying moving items in a user interface and, in particular, to such a method for use within a device for use with a wireless communications network. The invention provides a method and apparatus for displaying a moving object in which the object is part of a user interface defined by a mark-up language and in which the movement of the object is defined by an arbitrary profile.