EP1195052A2 - Fourniture a distance de contenu multimedia, a partir de dispositifs electroniques d'utilisateurs - Google Patents

Fourniture a distance de contenu multimedia, a partir de dispositifs electroniques d'utilisateurs

Info

Publication number
EP1195052A2
EP1195052A2 EP00991975A EP00991975A EP1195052A2 EP 1195052 A2 EP1195052 A2 EP 1195052A2 EP 00991975 A EP00991975 A EP 00991975A EP 00991975 A EP00991975 A EP 00991975A EP 1195052 A2 EP1195052 A2 EP 1195052A2
Authority
EP
European Patent Office
Prior art keywords
user
server
information signal
remote
environment
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.)
Withdrawn
Application number
EP00991975A
Other languages
German (de)
English (en)
Inventor
Jonathan Griffiths
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP1195052A2 publication Critical patent/EP1195052A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4227—Providing Remote input by a user located remotely from the client device, e.g. at work
    • 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
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • 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
    • H04N21/43—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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • 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
    • H04N21/47—End-user applications

Definitions

  • the present invention relates generally to consumer electronics devices, and more particularly to techniques for permitting remote playback or other delivery of audio, video or other types of multimedia content from such devices.
  • consumer electronics devices such as receiving, recording and playback devices for audio, video and other types of multimedia content.
  • communication technologies have also been advancing at a rapid rate.
  • digital streaming technology has provided users with the ability to obtain multimedia content via computer networks such as the Internet.
  • Significant advances are also occurring in other communication technology areas such as, e.g., home networking and automation, Internet access, and mobile wireless data services and devices.
  • consumer electronics devices nonetheless continue to be configured primarily as stand-alone devices intended to be operated in a local mode, i.e., controlled by a user that is co-located with the device.
  • a significant problem with these and other conventional techniques is that they are unable to provide a two-way interactive channel between a user and a controlled consumer electronic device at a location remote from the user. More particularly, such techniques fail to take advantage of the above-noted advances in digital streaming and other communication technologies to allow a user to control the streaming of audio, video or other multimedia content from a rem te device to another device at the actual user location. For example, conventional techniques do not allow a user to direct that a video recorder, audio system or other consumer electronics device at their home play back previously recorded material over a link established with another device at another location. As a result, the user is unable to access the previously recorded material when away from home.
  • the present invention allows audio, video or other multimedia content to be played back or otherwise delivered from one or more consumer electronic devices to a user at a location remote from the one or more devices.
  • the invention in an illustrative embodiment provides a two-way interactive channel between a remote user device and a controlled consumer electronic device not co-located with the user device, thereby allowing for efficient delivery of multimedia content from the controlled device to the remote user device.
  • a remote playback system provides playback of an information signal available from a first device in response to one or more commands received from a second device remote from the first device.
  • a network connection is established between the second device and a server coupled to, incorporated in or otherwise associated with the first device.
  • the server receives control commands from the second device, and delivers the information signal over the network connection from the first device to the second device in response to the commands.
  • the information signal may be, e.g., audio, video or other multimedia content.
  • the first device may be, e.g., a television, video recorder, audio system, computer or other multimedia device in a home environment of a particular user, and the second device may be, e.g., a wireless device operated outside of the home environment.
  • the server can be configured so as to stream the information signal to the second device in real time, and may also or alternatively be configured to deliver the information signal to the second device for storage and subsequent playback in the second device.
  • the server may present a hypertext page or other type of web page to a user of the second device, such that the user enters commands directed to the first device via the web page presented by the server.
  • the invention allows a given user to direct the delivery of multimedia content available on that user's home devices, such as a broadcast program currently being received by a television or previously-recorded audio or video content, to other devices outside the home.
  • multimedia content available on that user's home devices, such as a broadcast program currently being received by a television or previously-recorded audio or video content, to other devices outside the home.
  • the invention thus facilitates the control of consumer electronics devices in a home environment or other type of environment, from a remote user device, in response to user control commands entered at the remote user device.
  • the user is provided with considerable flexibility in selecting content, and does not incur additional content-related access charges other than those related to provision of external network connections.
  • Fig. 1 is a block diagram of a system with remote playback of multimedia content in accordance with a first illustrative embodiment of the invention.
  • Fig. 2 is a block diagram of a system with remote playback of multimedia content in accordance with a second illustrative embodiment of the invention.
  • the present invention provides techniques for remote playback of multimedia content from consumer electronics devices such as televisions, video recorders, personal computers (PCs), audio systems, etc.
  • the remote playback of the present invention is "personal" to a particular user or group of users, i.e., it allows a given user or group of users to playback multimedia content from their own device(s) when the user or users are not co-located with the device(s).
  • Fig. 1 shows a remote playback system 100 in accordance with a first illustrative embodiment of the invention.
  • the system 100 includes a home environment 110 that is assumed in this embodiment to be associated with a particular user.
  • the home environment 110 includes a number of consumer electronic devices, i.e., a handheld wireless device 112, a television 114, a video recorder 116, an audio system 118, and a PC 120.
  • the handheld wireless device 112 may be, e.g., a wireless telephone equipped with a web browser, a personal digital assistant (PDA), a palmtop computer or other type of processor- based device.
  • PDA personal digital assistant
  • the handheld wireless device 112 may be configured to communicate with one or more other devices in the home environment 110 via a local wireless network, e.g., a network configured to utilize a radio frequency (RF) wireless communication standard such as Bluetooth.
  • RF radio frequency
  • the Bluetooth standard specifies a short-range RF network supporting packet data at data rates up to 700 kbps, which is sufficient to carry multimedia content in the home.
  • One or more of the devices 112, 114, 116, 118 and 120 may include digital multimedia streaming capabilities, and may operate in accordance with a wireless access protocol (WAP).
  • WAP wireless access protocol
  • Each of the devices 114, 116, 118 and 120 in this illustrative embodiment are coupled to a controlling central server 130 via suitable home network connections.
  • These home network connections may be hard-wired connections, local area network (LAN) or other network connections, wireless network connections via an RF standard such as Bluetooth, or various combinations of these and other network connections that may be established in the home environment 110.
  • LAN local area network
  • Bluetooth wireless network connections via an RF standard such as Bluetooth
  • the controlling central server 130 may include a web server for establishing connections with an external network such as Internet 140.
  • the controlling central server 130 is also operative to establish connections with one or more other devices via the Internet 140, e.g., a PC located in a work environment of the user and connected to a corporate local are network (LAN) or intranet.
  • LAN local are network
  • the controlling central server 130 may also or alternatively include a WAP server for establishing connections with Internet 140 or other external networks such as wireless telephone network 150. Connections with the wireless telephone network 150 may also be established by the controlling central server 130 through the Internet 140 as shown.
  • the wireless telephone network 150 communicates with handheld wireless device 160 which is outside of the home environment 110.
  • the devices 112, 114, 116, 118 and 120 may each be coupled together over a home network.
  • the controlling central server 130 serves as a common "hub" for connecting each of these devices to the Internet 140, and includes a multimedia streaming capability.
  • the controlling central server 130 may also or alternatively include a WAP or Hypertext Mark-up Language (HTML) server, so as to provide a common interface to other devices also containing servers, or it may simply route directly through from the home environment 110 to such devices.
  • HTML Hypertext Mark-up Language
  • the system 100 allows the user associated with the home environment 110 to control this streaming of multimedia content from a device remote from the home environment 110.
  • the user can send appropriate control commands from, e.g., handheld wireless device 160 or another suitable device to the controlling central server 130 via the Internet 140.
  • the controlling central server delivers the control commands to the appropriate device or devices, receives the corresponding multimedia content therefrom, and streams the multimedia content via the Internet 140 back to the appropriate user device.
  • the user may access the controlling central server 130 of the home environment 110 by entering a corresponding Uniform Resource Locator (URL) into a browser associated with the remote user device.
  • URL Uniform Resource Locator
  • a connection for sending the above-noted commands and receiving the streaming multimedia content is then established between the remote user device and the controlling central server 130 in a conventional manner.
  • the server 130 may present the user with an appropriate web page that allows the user to enter the control commands in a convenient manner.
  • a page can be in any suitable format, e.g., HTML, Extensible Mark-up Language (XML), WML, etc.
  • control could be provided in the form of a very simple mechanism, e.g., a simple XML "start play" command.
  • Control could also be provided for other settings of the devices 112, 114, 116, 118 and 120 in the home environment 110, e.g., record/playback, disk selection, timed record, etc.
  • the controlling central server 130 may include various processing capabilities needed to interface between the remote user device and the devices 112, 114, 116, 118 and 120.
  • the controlling central server 130 may include additional processing required to compress an audio file into a suitable format to be delivered to audio system 118 in a standard format such as MP3.
  • the controlling central server 130 can be configured to customize its content automatically when the remote user device communicates therewith, e.g., it may adjust data rate, image size, page text, etc. to suit remote device screen size or other attributes.
  • Communication between the re note user device and the controlling central server 130 of the home environment 110 may be implemented using a client/server model, using any suitable transport protocol, e.g., Transmission Control Protocol (TCP)/Internet Protocol (IP), and any desired format, e.g., MPEG-2 for video, Realaudio or MP3 for audio, etc.
  • TCP Transmission Control Protocol
  • IP Internet Protocol
  • the controlling central server 130 may deliver multimedia content in a real-time streaming format, or in any other suitable format, e.g., a format suitable for sto ⁇ ng at the remote device for later playback
  • the controlling central server 130 may use many different combinations of available standards and technology, and should not be construed as limited to use with Internet standards.
  • the system 100 facilitates the control of consumer electronics devices in a home environment or other type of environment from a remotely-located user device
  • the invention allows the user to direct streaming of multimedia content from one or more of the devices in the home environment to the remote user device over the Internet or other suitable network connection.
  • a user can, e.g , remotely control the recording of a program on video recorder 116, while also watching the program on a remote device outside of the home environment 110.
  • a significant advantage of the present invention is that it permits delivery of multimedia content back to a user device in response to user control commands.
  • the invention thus allows personal remote entertainment to be delivered from the user's own devices within the home environment 110, without the intervention of a third party, other than network provision outside the home.
  • the user is thus provided with considerable flexibility in selecting content, and does not incur additional access charges other than those related to external network provision.
  • the remote user device which establishes the connection with the controlling central server 130 may be, e.g., the handheld wireless device 160 communicating with wireless telephone network 150, a computer or other device connected to the Internet 140, or any other suitable device capable of establishing a connection with the server 130.
  • the particular configuration of system 100 as shown in FIG. 1 is by way of example only. Those skilled in the art will recognize that the invention can be implemented using a wide variety of alternative system configurations.
  • FIG. 2 shows one possible alternative remote playback system 200 in accordance with a second illustrative embodiment of the invention.
  • the system 200 includes a home environment 210 that, like the home environment 110, is assumed to be associated with a particular user.
  • the home environment 210 includes handheld wireless device 112, and a video recorder 220.
  • the video recorder 220 is a single device configured to include a server.
  • the server is able to establish a connection with Internet 140 in a conventional manner, and is able to deliver multimedia content accessible via the video recorder 220 to a remote user device, e.g., handheld wireless device 160 via wireless telephone network 150 and Internet 140.
  • the server may include multimedia streaming capability, WAP capability, and/or other information processing capability.
  • the system 200 allows a remote user device to communicate with the server in the video recorder 220 so as to direct the delivery of multimedia content to the remote user device.
  • the system 200 thus operates in substantially the same manner as the system 100, but the functions of the controlling central server 130 are incorporated into the device 220.
  • the home environment 210 of system 200 may include additional consumer electronic devices, e.g., a television, audio system, PC, etc., each including a server capable of communicating with a remote user device.
  • the systems 100 and 200 may be used for other types of content delivery not involving playback of previously recorded information, e.g., real-time delivery of a broadcast signal received by a television, video recorder, computer or other device.
  • FIGS. 1 and 2 are illustrative only, and the invention may be incorporated in numerous other systems.
  • the invention can be used in conjunction with any desired type of consumer electronics device, e.g., a television, a set-top box, a desktop, laptop or palmtop computer, a PDA, a video storage device such as a video cassette recorder (VCR), a digital video recorder (DVR), a TiVO device, etc., as well as portions or combinations of these and other devices.
  • VCR video cassette recorder
  • DVR digital video recorder
  • the remote user device may communicate with these consumer electronic devices over a global computer communications network such as the Internet, a wide area network, a metropolitan area network, a local area network, a terrestrial broadcast system, a cable network, a satellite network, a wireless network, or a telephone network, as well as portions or combinations of these and other types of networks.
  • a global computer communications network such as the Internet, a wide area network, a metropolitan area network, a local area network, a terrestrial broadcast system, a cable network, a satellite network, a wireless network, or a telephone network, as well as portions or combinations of these and other types of networks.
  • the invention can be used to implement remote multimedia delivery or playback in any desired type of processing system or device, and in many applications other than those described herein.
  • the invention can also be implemented at least in part in the form of one or more software programs which are stored on an otherwise conventional electronic, magnetic or optical storage medium or other type of memory, and executed by a processing device, e.g., by a processor in server 130 of the system 100 of FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Graphics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Selective Calling Equipment (AREA)
  • Small-Scale Networks (AREA)
  • Computer And Data Communications (AREA)
  • Details Of Television Systems (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

Ce système de lecture à distance permet une lecture -ou tout autre type de fourniture commandée- d'un signal d'information disponible, à partir d'un premier dispositif, en réponse à une ou plusieurs commandes reçues à partir d'un second dispositif, lorsque ce second dispositif est situé à distance du premier. Dans un mode de réalisation, une connexion réseau est établie entre un second dispositif et un serveur couplé, incorporé, ou associé d'une autre manière, au premier dispositif. Le serveur reçoit des commandes émanant du second dispositif et achemine le signal d'information sur la connexion réseau, du premier au second dispositif, en réponse aux commandes. Le signal d'information peut être, par exemple, un contenu audio, vidéo ou autre multimédia. Le premier dispositif peut être, par exemple, une télévision, un magnétoscope, un système audio, un ordinateur ou un autre dispositif multimédia, qui se situe au domicile d'un utilisateur en particulier, le second dispositif pouvant être, par exemple, un dispositif sans fil commandé en dehors du domicile. L'invention permet donc à un utilisateur donné de diriger la livraison du contenu multimédia disponible sur l'un de ses dispositifs domestiques (soit un programme de radiodiffusion en cours de réception par une télévision, soit un contenu audio ou vidéo précédemment enregistré), vers d'autres dispositifs situés à l'extérieur de son domicile.
EP00991975A 1999-12-22 2000-12-15 Fourniture a distance de contenu multimedia, a partir de dispositifs electroniques d'utilisateurs Withdrawn EP1195052A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US469870 1983-02-25
US46987099A 1999-12-22 1999-12-22
PCT/EP2000/012863 WO2001047248A2 (fr) 1999-12-22 2000-12-15 Fourniture a distance de contenu multimedia, a partir de dispositifs electroniques d'utilisateurs

Publications (1)

Publication Number Publication Date
EP1195052A2 true EP1195052A2 (fr) 2002-04-10

Family

ID=23865369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991975A Withdrawn EP1195052A2 (fr) 1999-12-22 2000-12-15 Fourniture a distance de contenu multimedia, a partir de dispositifs electroniques d'utilisateurs

Country Status (5)

Country Link
EP (1) EP1195052A2 (fr)
JP (1) JP2003518832A (fr)
KR (1) KR20020007310A (fr)
CN (1) CN1363184A (fr)
WO (1) WO2001047248A2 (fr)

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KR20020007310A (ko) 2002-01-26

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