WO2005076531A1 - Systeme et procede d'informations multimedia a la demande - Google Patents

Systeme et procede d'informations multimedia a la demande Download PDF

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Publication number
WO2005076531A1
WO2005076531A1 PCT/CN2004/001374 CN2004001374W WO2005076531A1 WO 2005076531 A1 WO2005076531 A1 WO 2005076531A1 CN 2004001374 W CN2004001374 W CN 2004001374W WO 2005076531 A1 WO2005076531 A1 WO 2005076531A1
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WO
WIPO (PCT)
Prior art keywords
multimedia
demand
information
user
multimedia information
Prior art date
Application number
PCT/CN2004/001374
Other languages
English (en)
Chinese (zh)
Inventor
Dahai Zhai
Yanhui Yang
Shaojun Wei
Zhibo Wang
Original Assignee
Datang Telecom Technology Co., Ltd Optical Communication Branch
Datang Microelectronics Technology Co., Ltd.
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 Datang Telecom Technology Co., Ltd Optical Communication Branch, Datang Microelectronics Technology Co., Ltd. filed Critical Datang Telecom Technology Co., Ltd Optical Communication Branch
Publication of WO2005076531A1 publication Critical patent/WO2005076531A1/fr

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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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/27—Server based end-user applications
    • H04N21/278—Content descriptor database or directory service for end-user access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • 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
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet

Definitions

  • the present invention relates to the field of multimedia communication technologies, and in particular, to a multimedia information on-demand system and an on-demand method.
  • a user can obtain multimedia information on a broadband network in an on-demand manner.
  • a typical video-on-demand system mainly includes a video server 10, a switching device 11, and a network terminal device 12.
  • the network terminal device 12 logs in to the video server 10 through the switching device 11, and then can select the corresponding multimedia content provided by the content provider on the video server 10. After the user selects the content, the video server 10 can charge the The selected content is delivered to the network terminal device 12 for viewing by the user.
  • the existing video-on-demand system basically stays within a small network at the cell level.
  • a server will store certain multimedia data resources to provide video-on-demand to a limited number of users. Services, so content is provided in a single way.
  • the present invention provides a multimedia information on-demand system and an on-demand method, so that users can access multimedia provided by multiple content providers Resources, simplifying the user's on-demand operation.
  • the present invention provides a multimedia information on demand system, which is applied to a broadband network and includes:
  • a multimedia terminal connected to the television terminal, configured to receive multimedia information from a broadband network, send the multimedia information to the television terminal for playback, and send the user's on-demand information to the broadband network after processing;
  • a broadband access server which is connected to a multimedia terminal and is used to enable the multimedia terminal to access a broadband network
  • a navigation server connected to the broadband access server, configured to authenticate, manage, and provide an index directory for on-demand users who perform on-demand information through the multimedia terminal;
  • An Internet content provider is directly connected to the broadband access server or connected to the broadband access server through the Internet, and is configured to provide on-demand and downloaded multimedia information according to the user's on-demand information.
  • the present invention provides an on-demand method, which is applied to a multimedia information-on-demand system, and the multimedia information-on-demand system includes a multimedia terminal, a television terminal, and broadband access.
  • the method includes the following steps:
  • the multimedia terminal starts, connects to the corresponding navigation server and performs two-way authentication;
  • the user selects an on-demand Internet content provider multimedia program by selecting an index directory provided on the navigation server;
  • the Internet content provider authenticates the legitimacy of the VOD user. After the authentication is passed, the Internet content provider sends the service directory to the multimedia terminal, which is decoded by the multimedia terminal and sent to the TV terminal for playback.
  • the on-demand user further selects the multimedia information shown in the service directory, and sends the multimedia information to the Internet content provider through the multimedia terminal;
  • the Internet content provider transmits the on-demand multimedia information to the multimedia terminal device according to the request of the on-demand user, and simultaneously performs corresponding control operations and billing;
  • the multimedia terminal stores or decodes the received multimedia information and transmits it to the TV terminal for playback.
  • the present invention has the following advantages: By introducing a navigation server, the multimedia information on-demand system and the on-demand method of the present invention can establish connections with multiple Internet Content Providers (ICPs) and expand user access to multimedia The scope of information resources.
  • ICPs Internet Content Providers
  • the navigation server since the multimedia terminal is directly connected to the navigation server when landing on the network, the navigation server provides a corresponding index directory, thereby simplifying user operations; and it is more convenient to manage local broadcast users.
  • the multimedia information on demand system and the on demand method of the present invention because the navigation server provides rich
  • the on-demand system and method for multimedia information of the present invention can support multiple media playback formats by providing a multimedia terminal with a storage function, thereby replacing existing multimedia playback equipment such as VCD and DVD, and reducing investment in equipment replacement.
  • the multimedia information on demand system and method of the present invention also provide transmission of scrambled multimedia
  • the information method enhances information security. Users can only watch the corresponding multimedia information content after obtaining the corresponding descrambling key information, which is beneficial to protecting electronic intellectual property rights.
  • FIG. 1 is a schematic diagram of a prior art video on demand system
  • FIG. 1 is a schematic diagram of a specific embodiment of the multimedia information on demand system of the present invention
  • FIG. 3 is a schematic diagram of a navigation server shown in FIG.
  • FIG. 2 User management unit composition diagram
  • Figure 5 is a service composition unit shown in Figure 3
  • Figure 6 is a schematic diagram of the ICP shown in Figure 2
  • Figure 7 is a schematic diagram of the management module shown in Figure 6
  • Figure 8 is a service shown in Figure 6
  • Figure 9 is a schematic diagram of the media resource module shown in Figure 6
  • Figure 10 is a flowchart of a multimedia terminal device logging in to a broadband access server
  • Figure 11 is a flowchart of a multimedia terminal device logging in to a navigation server
  • Figure 12 is a user Method for ordering programs on ICP;
  • Figure 13 is a method of scrambling a program on a user-on-demand ICP.
  • the multimedia information on demand system of the present invention can realize direct on-demand video programs (VOD), news browsing, downloading of various files, online interactive games, online karaoke 0K, customized personalized service information, news, etc. through the existing broadband network.
  • VOD direct on-demand video programs
  • news browsing downloading of various files
  • online interactive games online karaoke 0K
  • customized personalized service information news, etc.
  • broadband network existing broadband network.
  • the broadband network may be a local area network based on a small area such as a home, an organization, or a community, or may be an Internet or an IP metropolitan area network.
  • the network connection may be based on various data transmission forms such as wired and wireless.
  • the broadband network may be a network system based on a routing switch and a residential broadband network, a broadband network based on current xDSL technology, or an HFC network using a coaxial cable as an access method, or a wireless network or an optical network.
  • Networks, etc. which are mainly used to provide users with Provides a reliable bandwidth access network system to ensure information exchange between ICP and users.
  • the multimedia information on demand system mainly includes a plurality of ICPs 20, a navigation server 21, a multimedia terminal 22, and a broadband access server 23.
  • ICP20 is used to provide corresponding on-demand and download multimedia information according to the user's on-demand information.
  • the ICP 20 is directly connected to the broadband access server 23 where the user is located, and is located in the local area network where the user is located. It provides a high-speed data download service, which can maximize the advantages of network bandwidth and thereby realize the real-time on-demand function.
  • the ICP 20 can also be connected to the broadband access server 23 of the user's location through the Internet.
  • the ICP is located on the Internet, and because it provides a lower download rate to the user, it can be mainly used to provide download services for multimedia resources.
  • the navigation server 21 is mainly used to provide links with multiple ICPs and user management.
  • the navigation server is connected to multiple ICPs, thereby overcoming the drawback that in the prior art, the on-demand system can only access specific ICPs.
  • the multimedia terminal 22 is mainly used to connect the corresponding ICP through the navigation server 21 to obtain multimedia information required by the user, and output and play the multimedia information.
  • the multimedia terminal 22 may receive, store, and analyze on-demand information from users, complete two-way data communication with the navigation server 21, process various multimedia information obtained from the ICP 20, and implement the multimedia terminal 22 to implement ordinary multimedia entertainment terminals. Functions.
  • the multimedia information output by the multimedia terminal 22 may be output to a television terminal, and the television terminal may be an analog signal television or a digital signal television based on various signal systems including a television and an audio system, or may be an analog signal based on various signal systems.
  • the playback device of a signal input interface of a digital signal television or a digital signal television supports both a video signal and an audio signal.
  • the navigation server 21 of the present invention mainly includes the following parts:
  • the network interface unit 211 is configured to access the network, and may be connected to a broadband access server 23 in the network so as to interact with the multimedia terminal 22 and the remote ICP;
  • the user management unit 212 is configured to perform account management on the on-demand users and identify the on-demand users.
  • a service providing unit 213 is configured to provide connections with multiple ICPs 20. Referring to FIG. 4, the user management unit 212 further includes:
  • the user management module 2121 is used for opening and canceling user accounts, and setting the level and access rights of related user accounts, and also implements user service logs, manages user registration, access to monthly services and access content;
  • An authentication module 2122 configured to complete identity verification of corresponding on-demand users and authentication of available network services
  • the authorization module 2123 is configured to check authorization information of the user so as to provide the user-accessible service content to the user.
  • the service providing unit 213 described in this embodiment may further include: a service directory module 2131, configured to provide an optional service directory to the user. After the user is authenticated by the navigation server 21, the user can see the on-demand service Directory, and then operate the device through the remote control to select the desired service.
  • a service directory module 2131 configured to provide an optional service directory to the user. After the user is authenticated by the navigation server 21, the user can see the on-demand service Directory, and then operate the device through the remote control to select the desired service.
  • the ICP index module 2132 is used to provide users with an ICP list and corresponding address links.
  • the ICP 20 includes a broadband access module 201, a management module 202, a service providing module 203, and a media resource module 204.
  • the broadband access module 201 is configured to connect the multi-user terminal 22 so that a user can select a corresponding multimedia on-demand service;
  • a management module 202 configured to implement user account management and corresponding operations such as authentication, authorization, and accounting,
  • the service providing module 203 is mainly used to provide a directory service, a download service, a WEB service, and a streaming media service;
  • the media resource module 204 is configured to provide multimedia information resources.
  • the ICP management module 202 includes a user management unit 2021, an authentication unit 2022, an authorization unit 2023, and an accounting unit 2024.
  • the user management unit 2021 is used to open and cancel a user account, and to set the level and access authority of the corresponding user account.
  • the user management unit 2021 also implements a user service log to manage user registration, access to monthly services and access content. Users can check their log information through the multimedia terminal 22;
  • An authentication unit 2022 configured to complete identity verification of corresponding on-demand users and authentication of available network services
  • Authorization unit 2023 used to check the user's authorization information so that the user can access the service and content to the user billing unit 2024;
  • the charging unit 2024 is configured to perform real-time charging based on different charging policies based on services accessed by the user.
  • the multimedia terminal 22 After the multimedia terminal 22 is turned on, it registers with the designated navigation server 21. After receiving the registration information, the navigation server 21 verifies the legitimacy of the user. If it is a legitimate user, it notifies the multimedia terminal 22 of the authentication and the user can start the directory service. Connect to the corresponding ICP 20. After receiving the user's operation request, ICP 20 verifies whether the user has access rights, and then verifies whether the user's requirements can be met. If the requirements can be met, it responds to the user's request to perform further operations and charges. Otherwise, it returns a message to inform the user that the requirement cannot be met and the reason why it cannot be met.
  • the service providing module 203 includes a directory service unit 2031, a download unit 2032, a WEB service unit 2033, and a streaming media service unit 2034.
  • the directory service unit 2031 is configured to provide an optional service directory to the user. After the user authentication is passed by the ICP, the user first sees the service directory, and then selects desired services and contents through operations such as a remote control.
  • the downloading unit 2032 is used for downloading the multimedia information required by the user.
  • the user can select the content he likes through the download service, and download it to the storage unit of the multimedia terminal before viewing. This feature is similar to the current VCD / DVD rental service.
  • WEB service unit 2033 which is used to provide users with WEB content.
  • TOB service can provide new News, electronics store, shopping, advertising and more.
  • a streaming media service unit 2034 is configured to provide users with video-on-demand, multicast, and live direct broadcast services.
  • the media resource module 204 includes a resource management unit 2041, a database unit 2042, a distribution unit 2043, and a load balancing unit 2044.
  • the resource management unit 2041 is configured to manage the inbound and outbound storage of the local media resources and complete the authorization, authentication, and accounting operations for access to the local media resources together with the management module 202.
  • the database unit 2042 is configured to store massive media resources for users to request, and the database needs to have flexible expansion capability and high reliability.
  • a distribution unit 2043 is used to realize the exchange of multimedia resources with other ICPs. It can establish multiple ICPs in a region or even across the country, and use distribution services to exchange media materials between multiple ICPs.
  • a load balancing unit 2044 is configured to adjust a local load and schedule services to other ICPs when overloaded.
  • the following describes the method for performing on-demand in the multimedia information on-demand system of the present invention.
  • the multimedia terminal device starts, connects to the corresponding navigation server and performs two-way authentication; b. The user selects the on-demand multimedia program on the ICP by selecting the index directory provided on the navigation server;
  • ICP authenticates the legitimacy of the user. After the authentication is passed, ICP sends the service directory to the multimedia terminal, which is decoded by the multimedia terminal and sent to the TV terminal for playback;
  • the user further selects the multimedia information shown in the service catalog and sends it to the ICP through the multimedia terminal;
  • ICP transmits the on-demand multimedia information to the multimedia terminal according to the user's request, and performs corresponding control operations and billing at the same time;
  • the multimedia terminal stores or decodes the received multimedia data to the television terminal for playback.
  • the step a further includes:
  • the multimedia terminal sends the first authentication information to the navigation server; the navigation server performs authentication according to the first authentication information;
  • the navigation server sends the second authentication information to the multimedia terminal; the multimedia terminal performs authentication according to the second authentication information.
  • the step b includes the following optional steps:
  • the user enters the index directory, selects the required service content, and then the navigation server informs the corresponding ICP to provide the service content and user information selected by the user;
  • the user enters the index directory, views the ICP list, and then the navigation server links it to the corresponding ICP according to the user's selection.
  • the step f further includes:
  • the multimedia terminal device parses the received multimedia information to obtain corresponding ICP information and performs corresponding authentication, and receives the multimedia information after the authentication is passed.
  • the multimedia information transmitted in step e may be scrambled multimedia information and corresponding key information, and step f further includes:
  • the multimedia terminal stores the received multimedia information and the corresponding descrambling key information separately;
  • De-scramble step Decrypt operation is performed on the stored key information and user information to obtain a scrambled control word, and the scrambled control word is used to descramble the scrambled multimedia data;
  • Playback steps Decode the descrambled multimedia information for playback.
  • the broadband network is described by taking an ADSL access network and a user requesting multimedia information of ICP1 as an example.
  • the user sends a DHCP broadcast packet to the network through the multimedia terminal and waits for a response from the broadband access server;
  • All broadband access servers that can provide access services (broadband connections that receive broadcast packets There may be more than one incoming server) After receiving the broadcast packet, they all respond to the multimedia terminal;
  • the multimedia terminal receives the response returned by the broadband access server, selects a broadband access server, and sends a request packet to it.
  • the selected broadband access server generates a unique internal dynamic IP address upon receiving a request packet from the multimedia terminal device, and returns it to the multimedia terminal;
  • the multimedia terminal sends data information including the user account and password to the broadband access server, and requests to establish a connection;
  • the broadband access server verifies the user account and password data and returns a confirmation message. Referring to FIG. 11, the process of logging in to the navigation server by the multimedia terminal will be described.
  • the multimedia terminal sends a request to log in to the management navigation server
  • the broadband access server forwards the request to the navigation server
  • the navigation server receives the user request, verifies the legitimacy of the user ID, checks the user's account amount, and activates the user account;
  • the navigation server returns a confirmation message
  • the broadband access server forwards the confirmation information to the multimedia terminal
  • the user enters the navigation server via the remote control and selects ICP1 in the ICP list;
  • the multimedia terminal sends a communication request to ICP1;
  • ICP1 returns confirmation information to the multimedia terminal
  • the multimedia terminal sends corresponding multimedia demand information to ICP1;
  • ICP1 reads the multimedia information selected by the user from the database
  • ICP1 returns the multimedia information to the multimedia terminal
  • the multimedia terminal stores the received multimedia information in the local hard disk; or directly outputs and plays it.
  • the user enters the navigation server via the remote control and selects ICP2 in the ICP list;
  • the multimedia terminal sends a communication request to ICP2, where the request includes user information, user ID, etc .;
  • ICP2 returns confirmation information to the multimedia terminal; 4.
  • the multimedia terminal sends corresponding multimedia demand information to ICP2;
  • ICP2 reads the multimedia information selected by the user from the database
  • ICP2 calculates the descrambling key information together with the scrambling control word according to the user information such as the user ID;
  • ICP2 returns the descrambling key information and scrambled data to the multimedia terminal
  • the multimedia terminal stores the received descrambling key information and the scrambled multimedia information into the local hard disk respectively;
  • the multimedia terminal reads the user information in the user's smart card (IC card) and performs a decryption operation with the descrambling key information to obtain the corresponding scrambled control word;
  • the user terminal uses the obtained scrambled control word to descramble the scrambled multimedia information and outputs it for playback.

Abstract

L'invention concerne un système et un procédé d'informations multimédia à la demande. Ce système est composé d'un terminal TV, d'un terminal multimédia relié au terminal TV, d'un serveur d'accès à une bande large connectée au terminal multimédia, d'un serveur de navigation relié au serveur d'accès à une bande large et servant à authentifier, à gérer et à présenter un répertoire d'indices aux abonnés demandant des informations par l'intermédiaire du terminal multimédia, ainsi que des fournisseurs de contenu Internet connectés au serveur d'accès à une bande large directement ou par l'intermédiaire d'Internet et servant à présenter et à télécharger des informations multimédia en fonction des demandes formulées par les abonnés. Ce procédé consiste à exécuter une opération (VOD) interactive entre le terminal multimédia et les fournisseurs de contenu Internet en fonction de l'administration du serveur de navigation. Ce système et ce procédé permettent aux abonnés d'accéder sans difficultés aux ressources multimédia mises à disposition par les fournisseurs de contenu Internet et de simplifier les processus opérationnels.
PCT/CN2004/001374 2004-01-19 2004-11-29 Systeme et procede d'informations multimedia a la demande WO2005076531A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410039332.7 2004-01-19
CNA2004100393327A CN1558676A (zh) 2004-01-19 2004-01-19 多媒体信息点播系统及点播方法

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