GB2371126A - Distributing modified interactive multimedia material to user terminals such as mobile phones which are not capable of executing the original material - Google Patents

Distributing modified interactive multimedia material to user terminals such as mobile phones which are not capable of executing the original material Download PDF

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Publication number
GB2371126A
GB2371126A GB0106236A GB0106236A GB2371126A GB 2371126 A GB2371126 A GB 2371126A GB 0106236 A GB0106236 A GB 0106236A GB 0106236 A GB0106236 A GB 0106236A GB 2371126 A GB2371126 A GB 2371126A
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United Kingdom
Prior art keywords
computer terminal
content
server
component
interactive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0106236A
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GB2371126B (en
GB0106236D0 (en
Inventor
Johan Sjoeblom
Sami Niinisalo
Ari Hovila
Atte Leppala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to GB0106236A priority Critical patent/GB2371126B/en
Publication of GB0106236D0 publication Critical patent/GB0106236D0/en
Priority to PCT/EP2002/002480 priority patent/WO2002073965A1/en
Publication of GB2371126A publication Critical patent/GB2371126A/en
Application granted granted Critical
Publication of GB2371126B publication Critical patent/GB2371126B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4355—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reformatting operations of additional data, e.g. HTML pages on a television screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/95—Retrieval from the web
    • G06F16/957—Browsing optimisation, e.g. caching or content distillation
    • G06F16/9577—Optimising the visualization of content, e.g. distillation of HTML documents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2355—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving reformatting operations of additional data, e.g. HTML pages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Information Transfer Between Computers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

A method of providing interactive content to a user of a computer terminal 7, wherein said content includes an executable component which the terminal 7 is unable to execute. The method comprises transferring said content from a source 5,6 to a mediator server where the executable component is extracted from the content, and executed. The results are translated into a format which can be used by the computer device 7, and are forwarded to the computer terminal 7 over a network connection 8, 9.

Description

INTERACTIVE MULTI-MEDIA
Field of the Invention The present invention relates to interactive multi-media and in particular, though not necessarily, to a method and apparatus for enabling text and multimedia data to be exchanged between individual viewers and a television broadcaster.
Background to the Invention There exists a demand amongst television viewers, broadcasters, and advertisers for interactive television (iTV). Interactive television will allow individual viewers to participate in television shows, for example as contestants in a game show, without having to attend the studio where the show is being produced, and will allow viewers to request and receive tailored supplementary information (which may be multimedia data) which it is not possible to provide via a conventional terrestrial, satellite, or cable broadcast. Using iTV, broadcasters and advertisers will be able to expand the range of available services, tapping into and collecting information from niche markets.
Interactive television is available today to a very limited extent. One approach is to broadcast multiple channels of information for each broadcast programme. The channels are decoded by a set top box, and the user may select one or more of the channels for viewing. Using this method, it is possible for example to allow a viewer to select one of several possible camera angles during a televised football match. Another approach requires the provision of a set top box which is connected to the viewer's telephone line. A viewer's selection (or other data) is returned via the phone line to a central server of the television broadcaster. Data may be returned to the viewer via the same phone line or via the broadcast channel.
A problem with both of the above approaches is that they require the use of a set top box. The penetration of such set top boxes is, and is likely to remain, low.
Furthermore, a method which relies upon a set top box tends not to be viewer specific.
For example, it is not possible for several viewers of the same television to interact differently with a given programme.
A potential solution is provided by the use of mobile wireless terminals such as mobile L*T telephones, communicators, and PDAS with wireless connectivity, to provide the interactive functionality. For example, whilst a television program is viewed on a
television, viewers may receive and send interactive content using their wireless terminals.
Statement of the Invention Whilst the use of mobile terminals in this way has many advantage, the level of interactivity which is made available is limited by the capabilities of the mobile terminals. Although the power and capabilities of mobile terminals has been increasing,
and will increase still further with the introduction of third generation mobile (. w) technology (UMTS/3GPP), it can be expected that the power of mobile terminals will
continue to lag behind that of set top boxes and the like for many years to come.
It can be expected that television broadcasters will want to transmit interactive content in a single format, regardless of the fact that viewers may use different devices, e. g. set
top boxes and mobile terminals, for viewing and responding to the interactive content.
* < For example, the format may be comprise Java apples in which case the receiving "rr device should be capable of executing Java'. Alternatively, the format may contain xlets
(specified for set top boxes), in which case the devices should be capable of executing xlets. However, at least in the foreseeable future, the majority of mobile devices are unlikely to have such capabilities. To overcome this limitation, broadcasters may have to transmit interactive content simultaneously in several different formats.
This problem is not limited to iTV, and arises whenever interactive content, comprising < T for example JavaL'applets, is to be viewed and responded to on a user device. This content may originate from a standard web server. The limitations of mobile wireless terminals typically mean that content providers must make their content available in two < T < different formats, one for viewing on Javfenabled devices and one for viewing on non LT/ Java) enabled terminals.
It is an object of the present invention to overcome or at least mitigate the above noted disadvantages of existing apparatus and methods for delivering interactive content to users. This and other objects are achieved by providing a server in the transmission path between a source of interactive content and user devices which is capable of translating executable components of the content into a form which can be used by the terminals. The server is also capable of handling responses received from user devices and, if necessary, translating these into a form for transmission to the source.
According to a first aspect of the present invention there is provided a method of providing interactive content to a user of a computer terminal, wherein said content includes an executable component which the terminal is unable to execute, the method comprising : transferring said content from a source to a server over a first network connection; extracting the executable component from the content; executing the component at the server, and translating the results of the execution into a format which can be used by the computer device; and forwarding the translated results from the server to the computer terminal over a second network connection.
In a preferred embodiment of the present invention, said computer terminal is a mobile wireless device coupled to a mobile telecommunications network. The server is a central server and is located in the mobile telecommunications network, and may be
coupled to the content source via the Internet. The content source may be a web server.
Thus Q The executable component may be a Javalapplet, Java-TV-API xlet, or i-Appli/as l' defined by NTT DoCoMoand Sun Microsystems. Of course, the executable component may be any component where the execution format is known. One only needs to know the interface specification of the platform or operating system which is capable of executing the given executable component. For example, there are existing -t < t\ Windows binary APIs available which are capable of running Microsoft Window S2 applications in environments others than Microsoft Windows If this is available even normal windows programs can be transformed into markup language and can therefore be used in a browser enabled terminal.
t.
Following execution of the interactive component (e. g. Javapplet or xlet) at the server, the results may be translated into html or wml format for transmission to the computer terminal.
In one embodiment of the invention, the interactive content is associated with a television broadcast, and is in a format to be used by an interactive TV or set-top-box {i'-\ for a TV, e. g. the content is a DVEO-MHP digi-TV stream. The source of the interactive content may be a server, synchronised to the broadcast signal.
According to a second aspect of the present invention there is provided apparatus for providing interactive content to a user of a computer device, wherein said content includes an executable component which the terminal is unable to execute, the apparatus comprising: input means for receiving said content from a source via a first network connection; processing means for extracting the executable component from the content, executing the component, and translating the results of the execution into a format which can be used by the computer device; and output means coupled to said computer device via a second network and arranged to forward the translated results to the computer terminal.
Brief Description of the Drawings Figure 1 illustrates schematically a system for providing interactive content to a television viewer; and Figure 2 is a flow diagram showing the main steps involved in providing interactive content in the system of Figure 1.
Detailed Description of a Preferred Embodiment There is illustrated in Figure 1 a system for providing interactive television. A television corporation 1 broadcasts programmes on a number of different terrestrial
television channels from a central studio or studios 2 using a set of transmitters 3.
Televisions 4 receive the broadcast channels in the usual manner. The interactive component of television viewing is facilitated by providing an information server 5 which is coupled to the broadcasting studios to receive the broadcast signals (the server may be provided by one or more computers). The broadcast signals contain programme triggers which indicate the beginning and end of a programme (including commercials) and possibly the identity of broadcast programmes.
Triggers may also occur during a programme to indicate a specific event. The server 5 is coupled to a database 6 which stores a set of information for each programme to be broadcast (e. g. in a given week). The server 5 retrieves information from the database 6
according to the triggers contained in the broadcast signals. The broadcast signal kvv"%) coming from the studio 2 is in the form of a standard DVB-MHP or similar decodable
interactive TV stream.
A television viewer wishing to participate in an interactive broadcast must be in possession of a wireless device 7 such as a mobile telephone, communicator, or PDA. For the purpose of illustration, the wireless device 7 is assumed to have functionality for accessing the Internet 8 via a mobile telecommunication access network 9 to which the terminal user subscribes-more particularly, internet access is facilitated by an IP gateway 10 of the access network 9. Conventional mobile phone networks (e. g. GSM) may have this Internet access functionality. However, Internet access is currently being
greatly enhanced by the introduction of services such as GPRS and new networks such i. as UMTY.
The viewer will select on the mobile terminal 7 the www address (URL) of the television channel (or programme) which he or she is currently viewing. This address may be displayed on the television screen and/or may be pre-programmed into the terminal 7. The selected URL identifies a location at the information server 5. The request for information is sent to the server 5 via the IP gateway 10 and the Internet 8.
The content at the specified location changes dynamically according to the programme
triggers contained in the television signals received by the server 5 from the studio 2.
LNM) The server 5 detects an executable xlet component in the DVB/MHP stream. The xlet is forwarded to a mediator server which executes the xlet. The results of the execution are
then converted into a format which can be used by the terminal 7, for example wml (wireless markup language) or html (hypertext markup language). The xlet may present information in the form of graphical user interface elements such as buttons, lists and input fields. These graphical elements would normally be shown on the TV screen by a set top box executing the xlet. In this system however the graphical elements are executed in the mediator server and shown from there as a normal browsing application onto the terminal 7. The choices made by the television viewer on the terminal 7 are sent back to the mediator server and processed there as a normal part of the xlet execution. The mediator server is performing a virtual set top box function, that is, it is executing the same xlet for multiple viewers. The mediator server can be physically be incorporated into the information server 5 or it can be a separate server.
By including certain information in the headers of HTTP (and WAP) pages it is possible to force proxies which may be present in the transmission route between the server 5 and the terminal 7 (and at the terminal 7 itself) not to store these pages in their respective caches. This means that requested pages are always obtained from the information server 5, ensuring that the pages are always"fresh".
It will be appreciated that various modifications may be made to the above described embodiments without departing from the scope of the present invention. For example, the mediator may be implemented in a set-top-box having an IP connection (e. g. via a telephone line) to the information server of the broadcaster. The wireless device may be
a"smart"TV remote control which communicates with the set-to-box via a radio or infra-red link (e. g. using the BluetootnM) protocol.

Claims (14)

Claims
1. A method of providing interactive content to a user of a computer terminal, wherein said content includes an executable component which the terminal is unable to execute, the method comprising: transferring said content from a source to a server over a first network connection; extracting the executable component from the content; executing the component at the server, and translating the results of the execution into a format which can be used by the computer device; and forwarding the translated results from the server to the computer terminal over a second network connection.
2. A method according to claim 1, wherein said computer terminal is a mobile wireless device coupled to a mobile telecommunications network.
3. A method according to claim 1 or claim 2, wherein the said server and the said computer terminal communicate using Internet Protocol (IP).
4. A method according to claim 3, wherein said server is implemented in a set-topbox connected to the content source via the first network connection.
5. A method according to claim 4, wherein the set-top-box and the computer terminal communicate over a radio, infrared or cable connection.
6. A method according to any one of the preceding claims, wherein said server and said computer terminal communicate via a phone line.
7. A method according to claim 2 or to any one of claims 3 to 6 when appended to claim 2, wherein the server is located in the mobile telecommunications network and is coupled to the content source via the Internet.
8. A method according to any one of the preceding claims, wherein the executable mT) L component is a Javahpplet, i-Appliapplication, xlet or any other executable component where the execution interface is known.
9. A method according to any one of the preceding claims, wherein following execution of the interactive component at the server, the results are translated into html or wml or other markup language format for transmission to the computer terminal.
10. A method according to claim 9 and comprising processing choices and inputs sent from the said computer terminal, at the server as a part of the execution of the executable component.
11. A method according to any one of the preceding claims, wherein the interactive content is associated with a television broadcast, and is in a format to be used by an
interactive TV or set-top-box for a TV.
rr
12. A method according to claim 11, wherein the content is a DVBIMHP digi-TV
stream.
13. Apparatus for providing interactive content to a user of a computer terminal, wherein said content includes an executable component which the terminal is unable to execute, the apparatus comprising: input means for receiving said content from a source via a first network connection ; processing means for extracting the executable component from the content, executing the component, and translating the results of the execution into a format which can be used by the computer terminal; and output means coupled to said computer terminal via a second network and arranged to forward the translated results to the computer terminal.
14. An apparatus as claimed in claim 13 and comprising input means coupled to said computer terminal via said second network for receiving input data from said computer terminal, and processing means for processing the input data as a normal part of the interactive component execution process.
14. An apparatus as in claim 13 and comprising input means coupled to said computer terminal via a second network for receiving input data from said computer terminal, and processing means for processing the input data as a normal part of the interactive component execution process.
Claims Amendments to the claims have been filed as follows
1. A method of providing interactive content to a user of a computer terminal, wherein said content includes an executable component which the terminal is unable to execute, the method comprising: transferring said content from a source to a server over a first network connection; extracting the executable component from the content; executing the component at the server, and translating the results of the execution into a format which can be used by the computer terminal; and forwarding the translated results from the server to the computer terminal over a second network connection.
2. A method according to claim 1, wherein said computer terminal is a mobile wireless device coupled to a mobile telecommunications network.
3. A method according to claim 1 or claim 2, wherein the said server and the said computer terminal communicate using Internet Protocol (IP).
4. A method according to claim 3, wherein said server is implemented in a set-topbox connected to the content source via the first network connection.
5. A method according to claim 4, wherein the set-top-box and the computer terminal communicate over a radio, infrared or cable connection.
6. A method according to any one of the preceding claims, wherein said server and said computer terminal communicate via a phone line.
7. A method according to claim 2 or to any one of claims 3 to 6 when appended to claim 2, wherein the server is located in the mobile telecommunications network and is coupled to the content source via the Internet.
8. A method according to any one of the preceding claims, wherein the executable t\ component is a Java/applet, i-Appli/application, xlet or any other executable component where the execution interface is known.
9. A method according to any one of the preceding claims, wherein following execution of the interactive component at the server, the results are translated into html or wml or other markup language format for transmission to the computer terminal.
10. A method according to claim 9 and comprising processing choices and inputs sent from the said computer terminal, at the server as a part of the execution of the executable component.
11. A method according to any one of the preceding claims, wherein the interactive
content is associated with a television broadcast, and is in a format to be used by an interactive TV or set-top-box for a TV.
. Tr\ 12. A method according to claim 11, wherein the content is a DVB)-MHP digi-TV stream.
13. Apparatus for providing interactive content to a user of a computer terminal, wherein said content includes an executable component which the terminal is unable to execute, the apparatus comprising: input means for receiving said content from a source via a first network connection; processing means for extracting the executable component from the content, executing the component, and translating the results of the execution into a format which can be used by the computer terminal ; and output means coupled to said computer terminal via a second network and arranged to forward the translated results to the computer terminal.
GB0106236A 2001-03-14 2001-03-14 Interactive multi-media Expired - Fee Related GB2371126B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0106236A GB2371126B (en) 2001-03-14 2001-03-14 Interactive multi-media
PCT/EP2002/002480 WO2002073965A1 (en) 2001-03-14 2002-03-04 Interactive multimedia system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0106236A GB2371126B (en) 2001-03-14 2001-03-14 Interactive multi-media

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GB0106236D0 GB0106236D0 (en) 2001-05-02
GB2371126A true GB2371126A (en) 2002-07-17
GB2371126B GB2371126B (en) 2002-11-27

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GB2433138A (en) * 2005-12-08 2007-06-13 Philip John A method of making media files available for delivery to portable devices

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DE10253115A1 (en) * 2002-11-13 2004-05-27 Robert Bosch Gmbh Data transmission system for Xlet-based data words via bundle-based interface for digital audio and digital video radio broadcasts and with provision for receiving global positioning system signals
FR2902268A1 (en) 2006-06-08 2007-12-14 France Telecom SYSTEM FOR ACCESSING IP TELEVISION SERVICE IN IMS ARCHITECTURE NETWORK

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DE10316848A1 (en) * 2003-04-11 2004-10-21 Deutsche Telekom Ag Process for the spontaneous transmission of audio-visual messages to recipient groups
GB2433138A (en) * 2005-12-08 2007-06-13 Philip John A method of making media files available for delivery to portable devices
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Publication number Publication date
WO2002073965A1 (en) 2002-09-19
GB2371126B (en) 2002-11-27
GB0106236D0 (en) 2001-05-02

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Effective date: 20050314