WO2014015789A1 - 数字电视终端、视频文件播放方法及视频文件播放系统 - Google Patents

数字电视终端、视频文件播放方法及视频文件播放系统 Download PDF

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Publication number
WO2014015789A1
WO2014015789A1 PCT/CN2013/079887 CN2013079887W WO2014015789A1 WO 2014015789 A1 WO2014015789 A1 WO 2014015789A1 CN 2013079887 W CN2013079887 W CN 2013079887W WO 2014015789 A1 WO2014015789 A1 WO 2014015789A1
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Prior art keywords
offline
video file
video
download
request
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PCT/CN2013/079887
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English (en)
French (fr)
Inventor
刘刚
Original Assignee
腾讯科技（深圳）有限公司
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Priority to EP13822085.0A priority Critical patent/EP2879394A4/en
Publication of WO2014015789A1 publication Critical patent/WO2014015789A1/zh
Priority to US14/604,341 priority patent/US9609366B2/en

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Classifications

    • 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
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
    • 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
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23109—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion by placing content in organized collections, e.g. EPG data repository
    • 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
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2183—Cache memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
    • 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
    • H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
    • H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26241—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the time of distribution, e.g. the best time of the day for inserting an advertisement or airing a children program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2665—Gathering content from different sources, e.g. Internet and satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4332—Content storage operation, e.g. storage operation in response to a pause request, caching operations by placing content in organized collections, e.g. local EPG data repository
    • 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
    • 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
    • H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
    • H04N21/4668—Learning process for intelligent management, e.g. learning user preferences for recommending movies for recommending content, e.g. movies
    • 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
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • 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
    • H04N21/482—End-user interface for program selection
    • H04N21/4826—End-user interface for program selection using recommendation lists, e.g. of programs or channels sorted out according to their score
    • 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
    • H04N21/482—End-user interface for program selection
    • H04N21/4828—End-user interface for program selection for searching program descriptors
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • 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
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing

Definitions

  • the subject of the present disclosure relates to the field of computer technologies, and in particular, to a digital television terminal, a video file playing method, and a video file playing system.
  • the embodiment of the invention provides a digital television terminal, which aims to solve the problem of low quality of video file playing.
  • the embodiment of the present invention is implemented as follows.
  • a digital television terminal the terminal includes: a video file retrieval unit, configured to receive a video retrieval request input by a user, and send the video retrieval request to an offline task in an offline download system.
  • the management server is configured to enable the offline task management server to perform a retrieval in a preset video file list according to the video retrieval request, and receive a retrieval result returned by the offline task management server;
  • a data downloading unit configured to download a selected video file from a cloud storage server associated with the preset video file list in an offline downloading system when receiving a play request that the user selects to play one of the search results ;
  • the embodiment of the invention further provides a video file playing method, the method comprising: receiving a video retrieval request input by a user, and sending the video retrieval request to an offline task management server in an offline download system, so that the offline The task management server searches in the preset video file list according to the video retrieval request, and receives the retrieval result returned by the offline task management server;
  • the downloaded video file is cached and played.
  • the embodiment of the invention further provides a video file playing system, including:
  • a digital television terminal configured to receive a video retrieval request input by a user, send the video retrieval request to an offline task management server in an offline downloading system, receive a retrieval result returned by the offline task management server, and receive a user to select to play the Searching for a play request of a video file in the search result, downloading the selected video file from the cloud storage server associated with the preset video file list in the offline download system, and buffering and playing the downloaded video file;
  • an offline downloading system configured to: after receiving the video retrieval request sent by the digital television terminal, perform a search in the preset video file list according to the video retrieval request, and return a retrieval result to the digital television terminal.
  • the embodiment of the present invention provides a digital television terminal, wherein the video file retrieval unit receives the video retrieval request input by the user, and sends the video retrieval request to the offline task management server in the offline download system, And causing the offline task management server to perform the retrieval in the preset video file list according to the video retrieval request, and receiving the retrieval result returned by the offline task management server, and the data downloading unit receives the user to select to play a video file in the retrieval result.
  • the selected video file is downloaded from the cloud storage server associated with the preset video file list in the offline download system, the data cache unit is used to cache the video file downloaded by the data download unit, and the video play unit is used to play the slave data.
  • the video file obtained by the cache unit is played and played.
  • FIG. 1A is a structural diagram of a video file playing system according to an embodiment of the present invention
  • Figure IB is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • Figure 2A is a structural diagram of a video file playback system according to an embodiment of the present invention
  • Figure 2B is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • 3A is a structural diagram of a video file playing system according to an embodiment of the present invention
  • FIG. 3B is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • FIG. 1A is a structural diagram of a video file playing system according to an embodiment of the present invention
  • Figure IB is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • Figure 2A is a structural diagram of a video file playback system according to an embodiment of the present invention
  • Figure 2B is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • 3A is a
  • FIG. 3C is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • Figure 4B is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • Figure 5 is a flowchart of a video file playing method according to an embodiment of the present invention
  • FIG. 6B is a structural diagram of a video file playing system according to an embodiment of the present invention
  • FIG. 7A is a structural diagram of a digital television terminal according to an embodiment of the present invention
  • 7B is a hardware structure diagram of a digital television terminal provided by an embodiment of the present invention. Mode for carrying out the invention
  • FIG. 1A shows the structure of a video file playing system according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • 1A shows a digital television terminal 1, an offline download system 2, and a computer terminal 3 that shares a video file in the offline download system 2 with the digital television terminal 1.
  • the offline download system 2 includes an offline task management server 20, an offline task distribution server 21, an offline download server group 22, a cloud storage server 23, an offline task database 24, and a statistics server 25.
  • the computer terminal 3 includes an offline download client 30, wherein: the offline download client 30 receives the input offline download task request, and submits an offline download task request to the offline task management server 20.
  • the offline download client 30 can be a dedicated client or browser. After the download task is completed, the offline download client 30 reports to the statistics server 25 the download time, download speed, download result, file size, downloaded original link, and different web address (Uniform/Universal Resource Locator, URL) source of the download task. Get information such as download speed and download time, and provide an online download progress query.
  • URL Uniform/Universal Resource Locator
  • the offline download client 30 can obtain the downloaded video file at a high speed through a point-to-server and point mode (P2SP) or other download protocol.
  • the offline task management server 20 receives the offline download task request submitted by the offline download client 30, generates a unique identification number for each independent offline download task, and writes the original link information of the offline download task to the offline task database 24 to receive the offline task.
  • the distribution server 21 downloads the progress report, and the offline download client 30 queries the offline download progress, and accepts the offline download task query, the video file retrieval request, and the offline transcoding task request of the offline download user.
  • the offline task distribution server 21 receives the load information report of the node in the offline download server group 22, and dynamically schedules the offline download task and the offline transcoding task to different offline download servers according to the load condition of the nodes in the offline download server group 22.
  • the nodes in the group 22 execute, receive the report of the download progress and speed information of the nodes in the offline download server group 22, and report the progress information to the offline task management server 20.
  • the offline download server group 22 receives the schedule of the offline task distribution server 21, obtains the download link from the offline task database 24, and downloads according to the download link, and stores the multimedia content such as the downloaded video file in the cloud storage server 23, or
  • the downloaded video file is offline transcoded for download, and reports offline download, offline transcoding progress and speed information to the offline task distribution server 21, registers its own address with the offline task distribution server 21, and provides load information such as its own disk space and CPU.
  • the report is for the offline task distribution server 21 to dynamically balance the scheduling according to the load.
  • the cloud storage server 23 holds the downloaded data of the offline download server group 22 for download.
  • the offline task database 24 is configured to store the offline download task information submitted by the offline download client 30 received by the offline task management server 20, for example, the task identification number, the original link information of the offline download task, and the like, for the offline download server group 22 to obtain.
  • the statistics server 25 receives the report of the URL download speed, the download time, the connection status, the download result, the file size, and the like in the download completion and download process of the offline download client 30, and writes the data into a flow log for subsequent statistical analysis. As shown in FIG.
  • the digital television terminal 1 includes a video file retrieval unit 10, a data download unit 11, a data buffer unit 12, and a video playback unit 13,
  • the video file retrieval unit 10 receives the retrieval request including the search term input by the user, and sends the retrieval request to the offline task management server 20 in the offline downloading system 2, so that the offline task management server 20 is in the preset video file list.
  • the received search term is retrieved and the search result is returned, and the video file retrieval unit 10 receives the retrieval result returned by the offline task management server 20.
  • the video file that has been downloaded by the user in the offline download system 2 and stored on the cloud storage server 23 is recorded in the preset video file list. Among them, each user has a list of video files.
  • the video file retrieval unit 10 after receiving the retrieval request including the search term input by the user, the video file retrieval unit 10 sends the retrieval request to the offline task management server 20, and the offline task management server 20 lists the video file corresponding to the user. Search in, and return the corresponding search results.
  • the offline task management server 20 when the video file is retrieved, the offline task management server 20 returns corresponding video file information, such as file size, format, and the like.
  • the offline task management server 20 returns a corresponding prompt information, prompting the user that the corresponding video file is not retrieved.
  • the data downloading unit 11 downloads the selected video file from the cloud storage server 23.
  • the data buffer unit 12 buffers the video file downloaded by the data download unit 11.
  • the loading unit 11 can perform correctness and integrity check on the data block downloaded from the cloud storage server 23, and then write the successfully verified data block to the data buffer unit 12.
  • the video playback unit 13 plays the video file acquired from the data buffer unit 12.
  • the user of the computer terminal 3 can submit an offline download request to the offline download system 2 through the offline download client 30 of the computer terminal 3, perform offline download of the video file, and store the downloaded video file on the cloud storage server 23. After the offline download is completed, it can be downloaded to the computer terminal 3 for high-speed playback through the corresponding client.
  • the corresponding client refers to a terminal device that can be downloaded from the cloud storage server 23 according to a standard protocol (such as the HTTP protocol).
  • the user of the digital television terminal 1 transmits the search request to the offline task management server 20 in the offline download system 2, so that the offline task management server 20 is in the preset video file.
  • the digital television terminal 1 receives the search result returned by the offline task management server 20; when receiving the play request of the video file selected by the user to select the play search result, offline
  • the downloaded video file is downloaded from the cloud storage server 23 associated with the video file list in the download system 2, and the downloaded video file is cached and played; thus, the video file in the offline download system 2 can be played through the digital television terminal 1.
  • the digital television terminal 1 is associated with the offline downloading system 2, and realizes the sharing of the massive video files in the offline downloading system 2, and is truly integrated with the Internet, so that the system 2 can be directly and quickly downloaded from the offline system 2
  • the cloud storage server 23 downloads the stored video file to realize the playback of the video file, thereby improving the playback quality of the video file on the digital television terminal 1.
  • FIG. 2A shows the structure of a video file playing system according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the network protocol conversion unit 14 is added to the aforementioned digital television terminal, as shown in FIG. 2B.
  • Network protocol data conversion is performed between the digital television terminal 1 and the offline task management server 20.
  • the network protocol conversion unit 14 may establish a corresponding interoperability rule.
  • a network protocol eg, Session Initiation Protocol SIP and TV vendor proprietary protocol
  • the mainstream offline task management server eg, Hypertext Transfer Protocol HTTP.
  • the mapping relationship improves the interworking capability of the digital television terminal 1 and the offline download system 2.
  • the network protocol conversion unit 14 when receiving a command request from the sender (for example, the video file retrieval unit 10 or the offline task management server 20), the network protocol conversion unit 14 performs the encapsulation format of the network protocol used by the sender. After parsing, the data is obtained and encapsulated according to the encapsulation format of the receiver's network protocol, and sent to the receiver. For example, when the video file retrieval unit 10 receives the retrieval request including the search term input by the user, the network protocol conversion unit 14 may perform network protocol data conversion on the retrieval request, and the converted offline task management server 20 may The identified retrieval request including the search term is sent to the offline task management server 20.
  • FIG. 2B shows the structure of a video file playing system according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the data uploading unit 15 is added on the basis of the aforementioned digital television terminal, as shown in FIG. 3B.
  • the data uploading unit 15 acquires the video file from the data buffer unit 12 and uploads it to the cloud storage server 23 or the remote digital television terminal 4.
  • the remote digital television terminal 4 can download the data from the cloud storage server 23, and can also connect to the local digital television connected to the network.
  • the terminal 1 sends a video file upload request.
  • the data uploading unit 15 uploads the video file from the data buffer unit 12 to the cloud storage server 23, and then forwards it to the remote digital television terminal 4 by the cloud storage server 23, or by the data uploading unit 15.
  • the obtained video file is directly transmitted to the remote digital television terminal 4.
  • the remote digital television terminal 4 can simultaneously acquire video files from the cloud storage server 23 and the local digital television terminal 1 connected to the network, thereby improving the download speed of the video file and improving the utilization of the bandwidth.
  • the local digital television terminal 1 can also download the video data uploaded by the data uploading unit 41 of the remote digital television terminal 4 through the data downloading unit 11, thereby further improving the video file downloading speed of the local digital television terminal 1.
  • the offline download unit 16 can also be integrated in the digital television terminal 1, as shown in FIG. 3C, for when the offline task management server 20 is in the preset video.
  • the offline download task request input by the user is received, and the offline download task request is submitted to the offline task management server 20.
  • the offline download unit 16 submits the offline to the offline task management server 20 when receiving the offline download task request input by the user. Download the task request.
  • the network protocol conversion unit 14 performs network protocol data conversion on the offline download task request, and then submits the converted to the offline task management server 20 after the conversion. Offline download task request.
  • the offline download unit 16 is further configured to receive the input offline download task progress query request, submit the offline download task progress query request to the offline task management server 20, and receive the query result returned by the offline task management server 20. If the network protocol used by the local digital television terminal 1 is different from the network protocol used by the offline task management server 20, the network protocol conversion unit 14 is requested to perform network protocol data conversion. In the embodiment of the present invention, the offline download unit 16 is integrated on the digital television terminal 1.
  • FIG. 4A shows the structure of a video file playing system according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • a transcoding request sending unit 17 is added, as shown in FIG.
  • FIG. 5 is a flowchart of an implementation of a video file playing method according to an embodiment of the present invention.
  • the method is applicable to the digital television terminal provided by the embodiment of the present invention, and includes the following steps: In step S501, receiving a video retrieval request input by a user, The retrieval request is sent to the offline task management server in the offline downloading system, so that the offline task management server searches in the preset video file list according to the video retrieval request, and receives the retrieval result returned by the offline task management server.
  • the digital television terminal includes a video file retrieval unit, a data download unit, a data buffer unit, and a video playback unit.
  • the video file retrieval unit receives the search request including the search term input by the user, and sends the search request to the offline task management server in the offline download system, so that the offline task management server searches for the received content in the preset video file list.
  • the search term is returned and the search result is returned, and the video file retrieval unit receives the search result returned by the offline task management server.
  • the preset video file list records the video files that the user has downloaded and stored on the cloud storage server in the offline download system.
  • the user receives a play request for playing one of the video files in the search result, and downloads the selected video file from the cloud storage server associated with the preset video file list in the offline download system.
  • the downloaded video file is cached and played.
  • the digital television terminal may further include a data uploading unit.
  • the data uploading unit acquires the video file from the data cache unit and uploads to the cloud storage server or the remote digital television terminal.
  • the remote digital television terminal plays the video file, in order to make full use of the existing broadband, the remote digital television terminal can also download the data from the cloud storage server, and can also send the video to the local digital television terminal connected to the network. File upload request.
  • the data uploading unit obtains the video file from the data buffering unit and uploads the video file to the cloud storage server, and then the cloud storage server forwards the video file to the remote digital television terminal, or the data uploading unit directly obtains the obtained video file.
  • the remote digital television terminal can simultaneously acquire video files from the cloud storage server and the local digital television terminal connected to the network, thereby improving the download speed of the video file and improving the utilization of the bandwidth.
  • the local digital television terminal can also download the video data uploaded by the data uploading unit of the remote digital television terminal through the data downloading unit, thereby further improving the video file downloading speed of the local digital television terminal.
  • the digital television terminal may further include an offline downloading unit, configured to receive an offline download task request input by the user, and submit an offline download task request to the offline task management server.
  • the offline downloading unit may be further configured to receive the input offline download task progress query request, submit the offline download task progress query request to the offline task management server, and receive the query result returned by the offline task management server.
  • the digital television terminal may further include a transcoding request sending unit. When the video file selected by the user does not conform to the preset video file format, the transcoding request sending unit is configured to send an offline transcoding task to the offline task management server.
  • the digital television terminal may further include a network protocol conversion unit, configured to perform network protocol data conversion between the digital television terminal and the offline task management server.
  • the network protocol conversion unit can establish a corresponding interoperability rule.
  • a network protocol eg, Session Initiation Protocol SIP and TV Vendor Private Protocol
  • the mainstream offline task management server eg, Hypertext Transfer Protocol HTTP.
  • the mapping relationship improves the interoperability between the digital TV terminal and the offline download system.
  • the digital television terminal downloads the selected video file from the cloud storage server, caches and plays the downloaded video file, and implements
  • the sharing of video files in the offline download system is truly integrated with the Internet, so that the stored video files can be downloaded from the cloud storage server directly and at high speed, and the video files can be played, thereby improving the playback quality of the video files on the digital television terminals.
  • the embodiment of the invention further provides a video file playing system, as shown in FIG. 6A.
  • the system includes a digital television terminal 1 and an offline downloading system 2, wherein: the digital television terminal 1 is configured to receive a video retrieval request input by a user, and send the retrieval request to an offline task management server in the offline downloading system 2, so that The offline task management server performs a search in a preset video file list according to the retrieval request, receives a retrieval result returned by the offline task management server, and receives a playback request of a video file selected by the user to play the retrieval result.
  • the digital television terminal 1 includes a video file retrieval unit 10, a data download unit 11, a data buffer unit 12, and a video playback unit 13, as shown in FIG. 6B.
  • the video file retrieval unit 10 is configured to receive a video retrieval request input by the user, and send the retrieval request to the offline task management server in the offline downloading system 2, so that the offline task management server is in the preset video file according to the retrieval request.
  • the search is performed in the list and the search result is returned, and the search result returned by the offline task management server is received.
  • the data download unit 11 is configured to, when the user selects to play a video file in the retrieval result, to download the video file downloaded by the data download unit 11 from the offline download system data buffer unit 12.
  • the video playing unit 13 is for playing a video file acquired from the data buffer unit 12.
  • the units in the foregoing embodiments of the present invention may be integrated into one or separately deployed; they may be combined into one unit or further split into multiple sub-units.
  • the digital television terminal is associated with the offline downloading system, and the sharing of the massive video files in the offline downloading system is realized, and the integration with the Internet is truly realized, so that the cloud storage server in the system can be directly and quickly downloaded from the system.
  • the downloaded video file is downloaded to realize the playback of the video file, and the playback quality of the video file on the digital television terminal is improved.
  • the interoperability of the digital TV terminal and the offline download system is improved by adding a network protocol conversion unit, thereby improving the interconnection and intercommunication between the digital television terminal and the offline download system. Force.
  • FIG. 7A is a hardware structural diagram of a digital television terminal 1 according to an embodiment of the present invention.
  • the digital television terminal includes: a processor 701, a first memory 702, a bus 703, at least one port 704, and a second memory 705; the processor 701, the first memory 702, and at least one port 704.
  • the second memory 705 is interconnected by a bus 703, wherein the first memory 702 is configured to store machine readable instructions; the processor 701 is configured to execute the machine readable instructions to perform the following operations: receiving a video input by a user Retrieving the request, sending the video retrieval request to an offline task management server in the offline downloading system, so that the offline task management server searches in a preset video file list according to the video retrieval request, and receives the offline task a retrieval result returned by the management server; receiving a play request by the user to play a video file in the search result, from the selected video file; the second memory 705 is configured to cache the downloaded video file; 701 is further configured to execute the machine readable instructions to perform the following operations: playing from the second save 705 captured video file.
  • the processor 701 is further configured to execute the machine readable instructions to: perform network protocol data conversion between the digital television terminal and the offline task management server; the processor 701 is further configured to execute The machine readable instructions are configured to: receive a video retrieval request input by the user, send a video retrieval request converted by network protocol data to the offline task management server, and receive the returned by the offline task management server Search Results.
  • the processor 701 is further configured to execute the machine readable instructions to: when receiving a video file upload request, acquire a video file from the second memory 705, upload to the cloud storage server or a remote digital TV terminal.
  • the processor 701 is further configured to execute the machine readable instructions to: receive an offline download task request, and submit the offline download task request to the offline task management server.
  • the processor 701 is further configured to execute the machine readable instructions to: receive an offline download task progress query request, submit the offline download task progress query request to the offline task management server, and receive the offline The result of the query returned by the task management server.
  • the processor 701 is further configured to execute the machine readable instructions to perform the following operations: When the video file selected by the user does not conform to the preset video file format, sending an offline transcoding task request to the offline task management server, so that the offline downloading system is completed in the cloud storage server; Download the transcoded video file in the cloud storage server.
  • the processor 701 is further configured to execute the machine readable instructions to perform the following operations: performing correctness and integrity check on the data block downloaded from the cloud storage server, and writing the successfully verified data block The data cache unit.
  • the aforementioned video file retrieval unit 10 when executed by the processor 701, the aforementioned video file retrieval unit 10, the data download unit 11, the video playback unit 13, and the network protocol conversion unit can be implemented. 14.
  • the functions of the data uploading unit 15, the offline downloading unit 16, and the transcoding request transmitting unit 17, wherein the second memory 705 can implement the functions of the data buffering unit 12 described above. Therefore, the hardware structure of the digital television terminal 1 provided by the embodiment of the present invention can also be as shown in FIG. 7B.
  • the machine readable instructions in the memory and executed by the processor may also be implemented by hardware (for example, a processor of an Application Specific Integrated Circuit (ASIC)) or by a combination of software and hardware.
  • ASIC Application Specific Integrated Circuit
  • the embodiments of the present invention are not specifically limited.
  • a device such as an FPGA or ASIC, is used to perform a specific operation.
  • the hardware modules may also include programmable logic devices or circuits (such as including general purpose processors or other programmable processors) that are temporarily configured by software for performing particular operations.
  • the permanent circuit, or a temporarily configured circuit (such as configured by software) to implement the hardware module can be determined based on cost and time considerations.
  • the medium includes instructions for causing a terminal device (which may be a mobile phone, a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例提供了一种数字电视终端、视频文件播放方法及视频文件播放系统。所述终端包括：视频文件检索单元，用于接收用户输入的检索请求，将检索请求发送给离线下载系统中的离线任务管理服务器，接收离线任务管理服务器返回的检索结果；数据下载单元，用于当接收到用户选择播放所述检索结果中的一个视频文件的播放请求时，从离线下载系统中与所述预设的视频文件列表关联的云存储服务器下载选择的视频文件；数据缓存单元，用于缓存数据下载单元下载的视频文件；视频播放单元，用于播放从数据缓存单元获取的视频文件。本发明实施例实现了数字电视终端与离线下载系统之间的视频文件共享，提高了视频文件的播放质量。

Description

数字电视终端、 视频文件播放方法及视频文件播放系统 本申请要求于 2012 年 7 月 26 日提交中国专利局、 申请号为 201210261564.1、 发明名称为 "数字电视终端、 视频文件播放方法及视 频文件播放系统" 的中国专利申请的优先权， 其全部内容通过引用结合 在本申请中。 技术领域
本公开的主题涉及计算机技术领域， 尤其涉及一种数字电视终端、 视频文件播放方法及视频文件播放系统。 发明背景
随着三网合一的发展， 电视终端和互联网的关系越来越密切。 电视 终端的硬件也不断升级， 处理高清视频文件的能力也越来越强。 为了满 足用户对高清视频等多媒体内容的需求， 目前， 大多数电视厂商已经推 出了智能电视、 云电视， 可点播互联网上的多媒体内容。 然而， 一般情况下， 这些多媒体内容都不是开放的， 而是由某一个 固定运营商或电视厂商提供的， 相对于海量的、 丰富的互联网内容显得 非常不足， 互联网电视的优势也得不到发挥。 于是， 提出了带有网络浏 览器或视频播放客户端的智能电视。 然而， 通过智能电视提供的网络浏 览器或视频播放客户端观看视频文件（尤其是高清视频文件） ， 会受到 网络宽带的限制， 视频文件的下载速度慢， 导致网络阻塞， 从而出现停 顿、 乱码等情况， 降低了高清视频文件的播放质量。 发明内容
本发明实施例提供了一种数字电视终端， 旨在解决视频文件播放质 量低的问题。 本发明实施例是这样实现的， 一种数字电视终端， 所述终端包括： 视频文件检索单元， 用于接收用户输入的视频检索请求， 将所述视 频检索请求发送给离线下载系统中的离线任务管理服务器， 以使所述离 线任务管理服务器根据该视频检索请求在预设的视频文件列表中进行 检索， 接收所述离线任务管理服务器返回的检索结果；
数据下载单元， 用于当接收到用户选择播放所述检索结果中的一个 视频文件的播放请求时， 从离线下载系统中与所述预设的视频文件列表 关联的云存储服务器下载选择的视频文件；
数据緩存单元， 用于緩存所述数据下载单元下载的视频文件； 以及 视频播放单元， 用于播放从所述数据緩存单元获取的视频文件。 本发明实施例还提供了一种视频文件播放方法， 所述方法包括： 接收用户输入的视频检索请求， 将所述视频检索请求发送给离线下 载系统中的离线任务管理服务器， 以使所述离线任务管理服务器根据该 视频检索请求在预设的视频文件列表中进行检索， 接收所述离线任务管 理服务器返回的检索结果；
接收用户选择播放所述检索结果中的一个视频文件的播放请求， 从 中下载选择的视频文件；
緩存并播放所述下载的视频文件。 本发明实施例还提供了一种视频文件播放系统， 包括：
数字电视终端， 用于接收用户输入的视频检索请求， 将所述视频检 索请求发送给离线下载系统中的离线任务管理服务器， 接收所述离线任 务管理服务器返回的检索结果， 接收用户选择播放所述检索结果中的一 个视频文件的播放请求， 从所述离线下载系统中与所述预设的视频文件 列表关联的云存储服务器中下载选择的视频文件， 緩存并播放所述下载 的视频文件；
离线下载系统， 用于在接收到数字电视终端发送的视频检索请求 后， 根据所述视频检索请求在所述预设的视频文件列表中进行检索， 向 所述数字电视终端返回检索结果。 由此可以看出， 本发明实施例提出了一种数字电视终端， 其中， 视 频文件检索单元接收用户输入的视频检索请求， 将该视频检索请求发送 给离线下载系统中的离线任务管理服务器， 以使离线任务管理服务器根 据该视频检索请求在预设的视频文件列表中进行检索， 并接收离线任务 管理服务器返回的检索结果， 数据下载单元当接收到用户选择播放所述 检索结果中的一个视频文件的播放请求时， 从离线下载系统中与预设的 视频文件列表关联的云存储服务器下载选择的视频文件， 数据緩存单元 用于緩存数据下载单元下载的视频文件， 视频播放单元用于播放从数据 緩存单元获取的视频文件并播放。 应用本发明实施例， 本地数字电视终 端可以共享离线下载系统中的视频文件， 实现了视频文件的快速下载， 提高了视频文件的播放质量。 附图简要说明
图 1A是本发明实施例提供的视频文件播放系统的结构图； 图 IB是本发明实施例提供的数字电视终端的结构图； 图 2A是本发明实施例提供的视频文件播放系统的结构图； 图 2B是本发明实施例提供的数字电视终端的结构图； 图 3A是本发明实施例提供的视频文件播放系统的结构图； 图 3B是本发明实施例提供的数字电视终端的结构图； 图 3C是本发明实施例提供的数字电视终端的结构图； 图 4A是本发明实施例提供的视频文件播放系统的结构图； 图 4B是本发明实施例提供的数字电视终端的结构图； 图 5是本发明实施例提供的视频文件播放方法的流程图； 图 6A是本发明实施例提供的视频文件播放系统的结构图； 图 6B是本发明实施例提供的视频文件播放系统的结构图； 图 7A是本发明实施例提供的数字电视终端的硬件结构图； 图 7B是本发明实施例提供的数字电视终端的硬件结构图。 实施本发明的方式
为了使本发明的技术方案及优点更加清楚明白， 以下结合附图及实 施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实 施例仅仅用以解释本发明， 并不用于限定本发明。 图 1A示出了本发明实施例提供的视频文件播放系统的结构， 为了 便于说明， 仅示出了与本发明实施例相关的部分。 图 1A示出了数字电视终端 1 , 离线下载系统 2, 以及与数字电视终 端 1共享离线下载系统 2中视频文件的计算机终端 3。 离线下载系统 2 包括离线任务管理服务器 20、 离线任务分发服务器 21、 离线下载服务 器群 22、 云存储服务器 23、 离线任务数据库 24以及统计服务器 25。 计 算机终端 3包括离线下载客户端 30, 其中： 离线下载客户端 30接收输入的离线下载任务请求， 向离线任务管 理服务器 20提交离线下载任务请求。 离线下载客户端 30可以是专门的 客户端或浏览器。 完成下载任务后， 离线下载客户端 30 向统计服务器 25汇报本次下载任务的下载时间、 下载速度、 下载结果、 文件大小、 下 载的原始链接和不同网页地址 ( Uniform/Universal Resource Locator, URL ) 源获取的下载速度和下载时间等信息， 并提供离线下载进度的查 询。 对完成的离线下载任务， 离线下载客户端 30可以通过点对服务器 和点方式（P2SP )或其它下载协议高速地获取下载得到的视频文件。 离线任务管理服务器 20接收离线下载客户端 30提交的离线下载任 务请求， 为每个独立的离线下载任务生成唯一的标识编号， 将离线下载 任务的原始链接信息写入离线任务数据库 24,接收离线任务分发服务器 21下载进度的上报， 同时供离线下载客户端 30查询离线下载进度， 接 受离线下载用户的离线下载任务查询、 视频文件的检索请求以及离线转 码任务请求。 离线任务分发服务器 21接收离线下载服务器群 22中的节点的负载 信息上报， 根据离线下载服务器群 22 中的节点的负载情况， 动态地将 离线下载任务、 离线转码任务调度到不同的离线下载服务器群 22 中的 节点上执行， 接收离线下载服务器群 22 中的节点的下载进度、 速度信 息的汇报， 同时把进度信息向离线任务管理服务器 20汇报。 离线下载服务器群 22接收离线任务分发服务器 21的调度， 从离线 任务数据库 24 中获取下载链接， 并根据该下载链接进行下载， 将下载 完成的视频文件等多媒体内容存储在云存储服务器 23 ,或对下载的视频 文件进行离线转码以供下载， 向离线任务分发服务器 21汇报离线下载、 离线转码进度和速度信息， 向离线任务分发服务器 21注册自己的地址， 提供自己磁盘空间、 CPU等负载信息的上报， 以供离线任务分发服务器 21按照负载进行动态均衡的调度。 云存储服务器 23保存离线下载服务器群 22下载完成的数据以供下 载。 离线任务数据库 24用于存储离线任务管理服务器 20接收到的离线 下载客户端 30提交的离线下载任务信息， 例如， 任务标识编号、 离线 下载任务的原始链接信息等， 以供离线下载服务器群 22获取。 统计服务器 25接收离线下载客户端 30 的下载完成和下载过程中 URL下载速度、 下载时间、 连通情况、 下载结果、 文件大小等信息的上 报， 并写成流水日志的方式供后续统计分析。 如图 1B所示， 本发明实施例提出的数字电视终端 1 包括视频文件 检索单元 10、数据下载单元 11、数据緩存单元 12以及视频播放单元 13 , 其中: 视频文件检索单元 10接收用户输入的包含检索词的检索请求， 将 检索请求发送给离线下载系统 2中的离线任务管理服务器 20,以使离线 任务管理服务器 20在预设的视频文件列表中检索接收到的检索词并返 回检索结果， 视频文件检索单元 10接收离线任务管理服务器 20返回的 检索结果。 其中， 预设的视频文件列表中记录了该用户在离线下载系统 2中已下载、 存储在云存储服务器 23上的视频文件。 其中， 每个用户对 应有一个视频文件列表。 相同的视频文件的内容只需保存一次， 但是可 属于不同用户的视频文件列表。 在本发明实施例中， 视频文件检索单元 10接收到用户输入的包含 检索词的检索请求后， 将检索请求发送给离线任务管理服务器 20, 离线 任务管理服务器 20在与该用户对应的视频文件列表中检索， 并返回相 应的检索结果。 在本发明实施例中， 当检索到视频文件时， 则离线任务管理服务器 20返回相应的视频文件信息， 例如， 文件大小、 格式等。 当未检索到视 频文件时， 则离线任务管理服务器 20返回相应的提示信息， 提示用户 未检索到对应的视频文件。 当用户选择播放检索结果中的一个视频文件时， 即接收到用户选择 播放检索结果中的一个视频文件的播放请求， 数据下载单元 11 从云存 储服务器 23中下载选择的视频文件。 数据緩存单元 12緩存数据下载单元 11下载的视频文件。 在本发明实施例中， 为了保证视频数据的正确性和完整性， 数据下 载单元 11可以对从云存储服务器 23中下载的数据块进行正确性和完整 性校验， 再将校验成功的数据块写入所述数据緩存单元 12。 视频播放单元 13播放从数据緩存单元 12获取的视频文件。 例如， 计算机终端 3的用户可以通过计算机终端 3的离线下载客户 端 30向离线下载系统 2提交离线下载请求， 进行视频文件的离线下载， 并将下载的视频文件存储在云存储服务器 23 上。 当离线下载完成后， 可以通过相应的客户端高速地下载到计算机终端 3进行播放。 其中， 所 述相应的客户端指能够按照标准协议（如 HTTP协议）从云存储服务器 23进行下载的终端设备。 数字电视终端 1的用户在接收到用户输入的包含检索词的检索请求 时， 将检索请求发送给离线下载系统 2中的离线任务管理服务器 20, 以 使离线任务管理服务器 20在预设的视频文件列表中检索接收到的检索 词并返回相应的检索结果；数字电视终端 1接收离线任务管理服务器 20 返回的检索结果； 当接收到用户选择播放检索结果中的一个视频文件的 播放请求时， 从离线下载系统 2中与视频文件列表关联的云存储服务器 23中下载选择的视频文件， 緩存并播放下载的视频文件； 这样就可以通 过数字电视终端 1播放离线下载系统 2中的视频文件。 在本发明实施例中， 数字电视终端 1与离线下载系统 2关联， 实现 了离线下载系统 2中海量视频文件的共享， 真正与互联网实现了整合， 从而可以直接、 高速地从离线下载系统 2中的云存储服务器 23上下载 其存储的视频文件， 实现视频文件的播放， 提高了数字电视终端 1上视 频文件的播放质量。 图 2A示出了本发明实施例提供的视频文件播放系统的结构， 为了 便于说明， 仅示出了与本发明实施例相关的部分。 考虑到数字电视终端使用的网络协议与离线任务管理服务器使用 的网络协议可能不同， 在本发明实施例中， 在前述的数字电视终端中增 加了网络协议转换单元 14, 如图 2B所示， 用于在数字电视终端 1与离 线任务管理服务器 20之间进行网络协议数据转换。 在具体实施过程中， 网络协议转换单元 14 可建立相应的互操作性规则。 在该互操作性规则 中， 建立数字电视系统使用的网络协议（例如， 会话初始协议 SIP以及 电视厂商私有协议）与主流离线任务管理服务器使用的网络协议（例如， 超文本传输协议 HTTP )之间的映射关系， 从而提高数字电视终端 1与 离线下载系统 2的互联互通能力。 在本发明实施例中， 当接收到发送方（例如， 视频文件检索单元 10 或离线任务管理服务器 20 ) 的命令请求时， 所述网络协议转换单元 14 按照发送方使用的网络协议的封装格式进行解析， 获取其中的数据后按 照接收方的网络协议的封装格式进行封装， 发送给接收方。 例如， 视频 文件检索单元 10在接收到用户输入的包含检索词的检索请求时， 就可 以通过网络协议转换单元 14对该检索请求进行网络协议数据转换， 将 转换后的、 离线任务管理服务器 20可识别的包含检索词的检索请求发 送给离线任务管理服务器 20。 类似地， 网络协议转换单元 14接收到离 线任务管理服务器 20返回的检索结果时， 将其转换为视频文件检索单 元 10可识别的数据。 图 2B所示的数字电视终端中的其它各单元的实施方式与前述实施 例中相同， 在此不再赘述。 在本发明实施例中， 通过增加网络协议转换单元 14提高了数字电 视终端 1与离线下载系统 2的互操作性， 进而提高了数字电视终端 1与 离线下载系统 2的互联互通能力。 图 3A示出了本发明实施例提供的视频文件播放系统的结构， 为了 便于说明， 仅示出了与本发明实施例相关的部分。 在本发明实施例中， 为了提升数据的下载速度和传输效率， 在前述 的数字电视终端基础上， 增加了数据上传单元 15 , 如图 3B所示。 当接收到视频文件上传请求时， 数据上传单元 15从数据緩存单元 12中获取视频文件， 上传至云存储服务器 23或远程数字电视终端 4。 在具体实施过程中， 当远程数字电视终端 4播放视频文件时， 为了充分 利用现有宽带， 远程数字电视终端 4从云存储服务器 23下载数据的同 时， 也可以向连接在网络上的本地数字电视终端 1发送视频文件上传请 求。 数字电视终端 1接收到该请求时， 数据上传单元 15从数据緩存单 元 12中获取视频文件上传至云存储服务器 23 ,由云存储服务器 23再转 发给远程数字电视终端 4,或由数据上传单元 15将获取到的视频文件直 接发送给远程数字电视终端 4。 这样， 远程数字电视终端 4就可以同时 从云存储服务器 23和连接在网络上的本地数字电视终端 1获取视频文 件， 从而提高了视频文件的下载速度， 提高了带宽的利用率。 同时， 本 地数字电视终端 1也可以通过数据下载单元 11下载远程数字电视终端 4 的数据上传单元 41上传的视频数据，进一步提高了本地数字电视终端 1 的视频文件下载速度。 在本发明的另一实施例中， 还可以在数字电视终端 1中集成离线下 载单元 16,如图 3C所示，用于当离线任务管理服务器 20在预设的视频 文件列表中未检索到接收到的检索词时， 接收用户输入的离线下载任务 请求， 向离线任务管理服务器 20提交该离线下载任务请求。 具体地， 若本地数字电视终端 1使用的网络协议与离线任务管理服务器 20使用 的网络协议相同， 则离线下载单元 16接收到用户输入的离线下载任务 请求时， 向离线任务管理服务器 20提交该离线下载任务请求。 若本地 数字电视终端 1使用的网络协议与离线任务管理服务器 20使用的网络 协议不同， 则通过网络协议转换单元 14对离线下载任务请求进行网络 协议数据转换后， 向离线任务管理服务器 20提交转换后的离线下载任 务请求。 该离线下载单元 16 还可以用于接收输入的离线下载任务进度 查询请求， 向离线任务管理服务器 20提交该离线下载任务进度查询请 求， 并接收离线任务管理服务器 20返回的查询结果。 若本地数字电视 终端 1使用的网络协议与离线任务管理服务器 20使用的网络协议不同， 则请求网络协议转换单元 14进行网络协议数据转换。 在本发明实施例中， 在数字电视终端 1上集成了离线下载单元 16。 当未检索到用户输入的检索词对应的视频文件时， 可通过该离线下载单 元 16进行离线下载任务的提交， 实现了数字电视终端 1上视频文件的 离线下载， 筒化了离线下载的过程， 从而提高了视频文件播放系统的集 成度和智能化程度。 图 4A示出了本发明实施例提供的视频文件播放系统的结构， 为了 便于说明， 仅示出了与本发明实施例相关的部分。 在本发明实施例中， 在前述的数字电视终端基础上， 增加了转码请 求发送单元 17, 如图 4B所示， 用于当用户选择播放的视频文件不符合 预设的视频文件格式时， 向离线任务管理服务器 20发送离线转码任务 请求， 以使离线下载系统 2完成视频文件的转码， 并将转码后的视频文 件保存在云存储服务器 23中。 这样， 数据下载单元 12就可以从云存储 服务器 23 中下载转码后的视频文件， 从而提高了视频文件播放系统的 兼容性。 图 5示出了本发明实施例提供的视频文件播放方法的实现流程， 该 方法适用于本发明实施例提供的数字电视终端， 包括如下步骤： 在步骤 S501 中， 接收用户输入的视频检索请求， 将检索请求发送 给离线下载系统中的离线任务管理服务器， 以使离线任务管理服务器根 据该视频检索请求在预设的视频文件列表中进行检索， 接收离线任务管 理服务器返回的检索结果。 在本发明实施例中， 数字电视终端包括视频文件检索单元、 数据下 载单元、 数据緩存单元以及视频播放单元。 其中， 视频文件检索单元接 收用户输入的包含检索词的检索请求， 将检索请求发送给离线下载系统 中的离线任务管理服务器， 以使离线任务管理服务器在预设的视频文件 列表中检索接收到的检索词并返回检索结果， 视频文件检索单元接收离 线任务管理服务器返回的检索结果。 其中， 预设的视频文件列表中记录 了该用户在离线下载系统中已下载、 存储在云存储服务器上的视频文 件。 在步骤 S502 中， 接收用户选择播放检索结果中的一个视频文件的 播放请求， 从离线下载系统中与预设的视频文件列表关联的云存储服务 器中下载选择的视频文件。 在步骤 S503中， 緩存并播放下载的视频文件。 在本发明实施例中， 为了提升数据的下载速度和传输效率， 数字电 视终端可以进一步地包括数据上传单元。 当接收到视频文件上传请求 时， 所述数据上传单元从数据緩存单元获取视频文件， 上传至云存储服 务器或远程数字电视终端。 在具体实施过程中， 当远程数字电视终端播 放视频文件时， 为了充分利用现有宽带， 远程数字电视终端从云存储服 务器下载数据的同时， 也可以向连接在网络上的本地数字电视终端发送 视频文件上传请求。 本地数字电视终端接收到该请求时， 数据上传单元 从数据緩存单元中获取视频文件上传至云存储服务器， 由云存储服务器 再转发给远程数字电视终端， 或数据上传单元将获取到的视频文件直接 发送给远程数字电视终端。 这样， 远程数字电视终端就可以同时从云存储服务器和连接在网络 上的本地数字电视终端获取视频文件， 从而提高了视频文件的下载速 度， 提高了带宽的利用率。 同时， 本地数字电视终端也可以通过数据下 载单元下载远程数字电视终端的数据上传单元上传的视频数据， 进一步 提高了本地数字电视终端的视频文件下载速度。 进一步地， 在本发明实施例中， 数字电视终端还可以包括离线下载 单元， 用于接收用户输入的离线下载任务请求， 向离线任务管理服务器 提交离线下载任务请求。 该离线下载单元还可以用于接收输入的离线下 载任务进度查询请求， 向离线任务管理服务器提交该离线下载任务进度 查询请求， 并接收离线任务管理服务器返回的查询结果。 进一步地， 在本发明实施例中， 数字电视终端还可以包括转码请求 发送单元。 当用户选择播放的视频文件不符合预设的视频文件格式时， 所述转码请求发送单元用于向离线任务管理服务器发送离线转码任务 请求， 以使离线下载系统完成视频文件的转码， 并将转码后的视频文件 存储在云存储服务器中。 这样， 数据下载单元就可以从云存储服务器中 下载转码后的视频文件， 从而提高了视频文件播放系统的兼容性。 进一步地， 在本发明实施例中， 数字电视终端还可以包括网络协议 转换单元， 用于在数字电视终端与离线任务管理服务器之间进行网络协 议数据转换。 在具体实施过程中， 网络协议转换单元可建立相应的互操 作性规则。在该互操作性规则中，建立数字电视系统使用的网络协议（例 如， 会话初始协议 SIP以及电视厂商私有协议）与主流离线任务管理服 务器使用的网络协议（例如， 超文本传输协议 HTTP )之间的映射关系， 从而提高数字电视终端与离线下载系统的互联互通能力。 在本发明实施例中， 当用户选择播放离线任务管理服务器返回的检 索结果中的一个视频文件时， 数字电视终端从云存储服务器中下载选择 的视频文件， 緩存并播放下载的视频文件， 实现了离线下载系统中视频 文件的共享， 真正与互联网实现了整合， 从而可以直接、 高速地从云存 储服务器上下载存储的视频文件， 实现视频文件的播放， 提高了数字电 视终端上视频文件的播放质量。 本发明实施例还提供了一种视频文件播放系统， 如图 6A所示。 该 系统包括数字电视终端 1以及离线下载系统 2, 其中： 数字电视终端 1 , 用于接收用户输入的视频检索请求， 将所述检索 请求发送给离线下载系统 2中的离线任务管理服务器， 以使所述离线任 务管理服务器根据该检索请求在预设的视频文件列表中进行检索， 接收 所述离线任务管理服务器返回的检索结果， 接收用户选择播放检索结果 中的一个视频文件的播放请求， 从所述离线下载系统 2中与所述预设的 视频文件列表关联的云存储服务器中下载选择的视频文件， 緩存并播放 所述下载的视频文件； 离线下载系统 2, 用于在接收到数字电视终端 1发送的包含检索词 的视频检索请求后， 在预设的视频文件列表中检索所述检索词， 向所述 数字电视终端 1返回相应的检索结果。 在本发明实施例中， 数字电视终端 1包括视频文件检索单元 10、数 据下载单元 11、 数据緩存单元 12以及视频播放单元 13 , 如图 6B所示。 其中， 视频文件检索单元 10 用于接收用户输入的视频检索请求， 将该 检索请求发送给离线下载系统 2中的离线任务管理服务器， 以使离线任 务管理服务器根据该检索请求在预设的视频文件列表中进行检索并返 回检索结果， 接收离线任务管理服务器返回的检索结果。 数据下载单元 11用于当用户选择播放检索结果中的一个视频文件时，从离线下载系统 数据緩存单元 12用于緩存所述数据下载单元 11下载的视频文件。 视频 播放单元 13用于播放从所述数据緩存单元 12获取的视频文件。 上述本发明实施例中的各个单元既可以集成于一体， 也可以分离部 署； 既可以合并为一个单元， 也可以进一步拆分成多个子单元。 在本发明实施例中， 数字电视终端与离线下载系统关联， 实现了离 线下载系统中海量视频文件的共享， 真正与互联网实现了整合， 从而可 以直接、 高速地从离线下载系统中的云存储服务器上下载存储的视频文 件， 实现视频文件的播放，提高了数字电视终端上视频文件的播放质量。 此外， 通过增加网络协议转换单元提高了数字电视终端与离线下载系统 的互操作性， 进而提高了数字电视终端与离线下载系统的互联互通能 力。 通过集成数据上传单元， 本地数字电视终端可通过数据下载单元下 载远程数字电视终端的数据上传单元上传的视频数据， 进一步提高了本 地数字电视终端的视频文件下载速度， 从而整体上提高了数字电视终端 上视频文件的播放质量。 图 7A是本发明实施例提供的数字电视终端 1的硬件结构图。 如图 7A所示，该数字电视终端包括：处理器 701 ,第一存储器 702,总线 703 , 至少一个端口 704, 以及第二存储器 705; 所述处理器 701 , 第一存储器 702, 至少一个端口 704以及第二存储器 705通过总线 703互联， 其中， 所述第一存储器 702用于存储机器可读指令； 所述处理器 701用于执行所述机器可读指令来执行以下操作： 接收用户输入的视频检索请求， 将所述视频检索请求发送给离线下 载系统中的离线任务管理服务器， 以使所述离线任务管理服务器根据该 视频检索请求在预设的视频文件列表中进行检索， 接收所述离线任务管 理服务器返回的检索结果； 接收用户选择播放所述检索结果中的一个视频文件的播放请求， 从 选择的视频文件； 所述第二存储器 705用于緩存所述下载的视频文件； 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 播放从所述第二存储器 705获取的视频文件。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 在所述数字电视终端与所述离线任务管理服务器之间进行网络协 议数据转换； 所述处理器 701 进一步用于执行所述机器可读指令来执行以下操 作： 接收所述用户输入的视频检索请求， 将经过网络协议数据转换后的 视频检索请求发送给所述离线任务管理服务器， 接收所述离线任务管理 服务器返回的检索结果。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 当接收到视频文件上传请求时， 从所述第二存储器 705获取视频文 件， 上传至所述云存储服务器或远程数字电视终端。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 接收离线下载任务请求， 向所述离线任务管理服务器提交所述离线 下载任务请求。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 接收离线下载任务进度查询请求， 向所述离线任务管理服务器提交 所述离线下载任务进度查询请求， 并接收所述离线任务管理服务器返回 的查询结果。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 当用户选择播放的视频文件不符合预设的视频文件格式时， 向所述 离线任务管理服务器发送离线转码任务请求， 以使所述离线下载系统完 在所述云存储服务器中； 从所述云存储服务器中下载转码后的视频文件。 所述处理器 701还用于执行所述机器可读指令来执行以下操作： 对从所述云存储服务器中下载的数据块进行正确性和完整性校验， 将校验成功的数据块写入所述数据緩存单元。 由此可以看出， 当存储在第一存储器 702中的机器可读指令被处理 器 701执行时， 可实现前述的视频文件检索单元 10、 数据下载单元 11、 视频播放单元 13、 网络协议转换单元 14、 数据上传单元 15、 离线下载 单元 16以及转码请求发送单元 17的功能， 所述第二存储器 705可实现 前述的数据緩存单元 12 的功能。 故而本发明实施例提供的数字电视终 端 1的硬件结构也可如图 7B所示。
储器中并由处理器来执行的机器可读指令） ， 也可以由硬件实现（例如 专用集成电路（ Application Specific Integrated Circuit, ASIC )的处理器）， 或者由软件和硬件的结合实现。 本发明实施例并不具体限定。 例如， 一 器， 如 FPGA或 ASIC )用于完成特定的操作。 硬件模块也可以包括由 软件临时配置的可编程逻辑器件或电路（如包括通用处理器或其它可编 程处理器）用于执行特定操作。 至于具体采用机械方式， 或是采用专用 的永久性电路， 或是采用临时配置的电路（如由软件进行配置）来实现 硬件模块， 可以根据成本和时间上的考虑来决定。 本领域普通技术人员可以理解实现上述实施例方法中的全部或部 分步骤是可以通过机器可读指令来指令相关的硬件来完成的， 所述的机 器可读指令可以存储于一计算机可读取存储介质中， 包括若干指令用以 使得一台终端设备（可以是手机， 个人计算机， 服务器， 或者网络设备 等）执行本发明各实施例所述的方法。 其中， 所述的存储介质可为磁碟、 光盘、 只读存储记忆体（Read-Only Memory, ROM )或随机存储记忆体 ( Random Access Memory , RAM )等。 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡 在本发明的精神和原则之内所作的任何修改、 等同替换和改进等， 均应 包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种数字电视终端， 其特征在于， 所述终端包括：
视频文件检索单元， 用于接收用户输入的视频检索请求， 将所述视 频检索请求发送给离线下载系统中的离线任务管理服务器， 以使所述离 线任务管理服务器根据该视频检索请求在预设的视频文件列表中进行 检索， 接收所述离线任务管理服务器返回的检索结果；
数据下载单元， 用于当接收到用户选择播放所述检索结果中的一个 视频文件的播放请求时， 从离线下载系统中与所述预设的视频文件列表 关联的云存储服务器下载选择的视频文件；
数据緩存单元， 用于緩存所述数据下载单元下载的视频文件； 以及 视频播放单元， 用于播放从所述数据緩存单元获取的视频文件。
2、 如权利要求 1所述的终端， 其特征在于， 所述终端还包括： 网络协议转换单元， 用于在所述数字电视终端与所述离线任务管理 服务器之间进行网络协议数据转换；
所述视频文件检索单元还用于：
接收所述用户输入的视频检索请求， 将由所述网络协议转换单元转 换后的视频检索请求发送给所述离线任务管理服务器， 接收所述离线任 务管理服务器返回的检索结果。
3、 如权利要求 1或 2所述的终端， 其特征在于， 所述终端还包括： 数据上传单元， 用于当接收到视频文件上传请求时， 从所述数据緩 存单元获取视频文件， 上传至所述云存储服务器或远程数字电视终端。
4、 如权利要求 1或 2所述的终端， 其特征在于， 所述终端还包括： 离线下载单元， 用于接收离线下载任务请求， 向所述离线任务管理 服务器提交所述离线下载任务请求。
5、 如权利要求 4所述的终端， 其特征在于， 所述离线下载单元还 用于：
接收离线下载任务进度查询请求， 向所述离线任务管理服务器提交 所述离线下载任务进度查询请求， 并接收所述离线任务管理服务器返回 的查询结果。
6、 如权利要求 1或 2所述的终端， 其特征在于， 所述终端还包括： 转码请求发送单元， 用于当用户选择播放的视频文件不符合预设的 视频文件格式时， 向所述离线任务管理服务器发送离线转码任务请求， 以使所述离线下载系统完成对所述用户选择播放的视频文件的转码并 将转码后的视频文件保存在所述云存储服务器中；
所述数据下载单元进一步用于从所述云存储服务器中下载转码后 的视频文件。
7、 如权利要求 1或 2所述的终端， 其特征在于， 所述数据下载单 元还用于：
对从所述云存储服务器中下载的数据块进行正确性和完整性校验， 将校验成功的数据块写入所述数据緩存单元。
8、 一种视频文件播放方法， 其特征在于， 所述方法包括： 接收用户输入的视频检索请求， 将所述视频检索请求发送给离线下 载系统中的离线任务管理服务器， 以使所述离线任务管理服务器根据该 视频检索请求在预设的视频文件列表中进行检索， 接收所述离线任务管 理服务器返回的检索结果；
接收用户选择播放所述检索结果中的一个视频文件的播放请求， 从 中下载选择的视频文件；
緩存并播放所述下载的视频文件。
9、 如权利要求 8 所述的方法， 其特征在于， 所述接收用户输入的 视频检索请求， 将所述视频检索请求发送给离线下载系统中的离线任务 管理服务器包括：
接收所述用户输入的视频检索请求， 对所述视频检索请求进行网络 协议数据转换， 将转换后的视频检索请求发送给所述离线任务管理服务 器。
10、如权利要求 8或 9所述的方法， 其特征在于， 所述方法还包括： 当接收到视频文件上传请求时， 从緩存的视频文件中获取视频文 件， 上传至所述云存储服务器或远程数字电视终端。
11、如权利要求 8或 9所述的方法， 其特征在于， 所述方法还包括： 接收离线下载任务请求， 向所述离线任务管理服务器提交所述离线 下载任务请求。
12、 如权利要求 11所述的方法， 其特征在于， 所述方法还包括： 接收离线下载任务进度查询请求， 向所述离线任务管理服务器提交 所述离线下载任务进度查询请求， 并接收所述离线任务管理服务器返回 的查询结果。
13、 如权利要求 8或 9所述的方法， 其特征在于， 所述接收用户选 择播放检索结果中的一个视频文件的播放请求， 从所述离线下载系统中 件包括：
当用户选择播放的视频文件不符合预设的视频文件格式时， 向所述 离线任务管理服务器发送离线转码任务请求， 以使所述离线下载系统完 在云存储服务器中；
从所述云存储服务器中下载转码后的视频文件。
14、 一种视频文件播放系统， 其特征在于， 包括： 数字电视终端， 用于接收用户输入的视频检索请求， 将所述视频检 索请求发送给离线下载系统中的离线任务管理服务器， 接收所述离线任 务管理服务器返回的检索结果， 接收用户选择播放所述检索结果中的一 个视频文件的播放请求， 从所述离线下载系统中与所述预设的视频文件 列表关联的云存储服务器中下载选择的视频文件， 緩存并播放所述下载 的视频文件；
离线下载系统， 用于在接收到数字电视终端发送的视频检索请求 后， 根据所述视频检索请求在所述预设的视频文件列表中进行检索， 向 所述数字电视终端返回检索结果。
15、 如权利要求 14所述的系统， 其特征在于， 所述数字电视终端 包括：
视频文件检索单元， 用于接收用户输入的视频检索请求， 将所述视 频检索请求发送给所述离线任务管理服务器， 接收所述离线任务管理服 务器返回的检索结果；
数据下载单元， 接收用户选择播放所述检索结果中的一个视频文件 的播放请求， 从所述离线下载系统中与所述预设的视频文件列表关联的 云存储服务器下载选择的视频文件；
数据緩存单元， 用于緩存所述数据下载单元下载的视频文件； 以及 视频播放单元， 用于播放从所述数据緩存单元获取的视频文件。
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