CN105681827B - Poster generation method, system and the relevant apparatus of direct broadcast band - Google Patents

Poster generation method, system and the relevant apparatus of direct broadcast band Download PDF

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Publication number
CN105681827B
CN105681827B CN201610125959.7A CN201610125959A CN105681827B CN 105681827 B CN105681827 B CN 105681827B CN 201610125959 A CN201610125959 A CN 201610125959A CN 105681827 B CN105681827 B CN 105681827B
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China
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poster
server
direct broadcast
broadcast band
file name
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CN201610125959.7A
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Chinese (zh)
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CN105681827A (en
Inventor
罗盛波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management 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
    • H04N21/254Management at additional data server, e.g. shopping server, rights management server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234336Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by media transcoding, e.g. video is transformed into a slideshow of still pictures or audio is converted into text
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management 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
    • H04N21/262Content 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management 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
    • H04N21/262Content 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
    • H04N21/26283Content 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 for associating distribution time parameters to content, e.g. to generate electronic program guide data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/482End-user interface for program selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/812Monomedia components thereof involving advertisement data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84Generation or processing of descriptive data, e.g. content descriptors

Abstract

The embodiment of the invention discloses poster generation method, system and the relevant apparatus of a kind of direct broadcast band, provide solution to the poster generation for direct broadcast band.Wherein, poster generation method includes: encoder according to the video frame in the video flowing of preset period of time interception direct broadcast band, poster is generated according to the video frame of interception, then the poster is uploaded to poster server so that user checks, is able to ascend the producing efficiency of poster and guarantees the real-time update of poster.

Description

Poster generation method, system and the relevant apparatus of direct broadcast band
Technical field
The present invention relates to poster generation method, system and the correlations of field of communication technology more particularly to a kind of direct broadcast band Device.
Background technique
Electronic program guides (Electronic Program Guide, EPG) system is interaction TV (IPTV) The gate system of videos operation system is waited, includes a large amount of poster in EPG system, poster is for being introduced video content. User can be linked into EPG system by clients such as webpage (web), TV (TV), phone (phone), plates (pad), lead to The content that poster intuitively understands video is crossed, interested video is then selected to be watched.Direct broadcast band is a kind of important view Frequency plays form, and the poster of direct broadcast band is also a kind of important poster-type.
With the development of video traffic, there are many new business demands, be typical for the preview to direct broadcast band.
It is as shown in Figure 1 existing poster management system configuration diagram, existing poster generallys use manual manufacture mode, Detailed process is as follows for the poster of the program listing of the channel poster and production direct broadcast band of production direct broadcast band:
After the poster of each direct broadcast band of manual manufacture, poster is uploaded into poster server;
Poster full dose is synchronized to poster server by poster server, i.e., the poster of all direct broadcast bands is synchronized to center EPG node;
For IPTV service, the poster of all direct broadcast bands is synchronized to edge EPG node by center EPG node, thus real Existing poster distribution.
Existing poster uses manual manufacture mode, and fabrication cycle is long, higher cost, also, due to direct broadcast band Or the poster of program listing is made and usually be will not change later, and the scene demand of the preview of direct broadcast band is unable to satisfy.Also, The full dose poster method of synchronization of IPTV causes the user before poster full dose is synchronized and do not completed that can not access not synchronous poster.
In conclusion how to promote the poster formation efficiency of direct broadcast band and real-time is problem to be solved.
Summary of the invention
The embodiment of the present invention provides poster generation method, system and the relevant apparatus of a kind of direct broadcast band, to for live streaming The poster of channel, which generates, provides solution.
Specific technical solution provided in an embodiment of the present invention is as follows:
In a first aspect, this method specifically includes the embodiment of the invention provides a kind of poster generation method of direct broadcast band:
Encoder is according to the video frame in the video flowing of preset period of time interception direct broadcast band, according to the video frame of interception Generate poster;
The poster is uploaded to poster server by the encoder.
This embodiment achieves posters in the application scenarios of direct broadcast band to automatically generate, and shortens poster fabrication cycle, Poster cost of manufacture is reduced, and can satisfy the demand of direct broadcast band preview.
In possible embodiment, in video flowing of the encoder according to preset period of time interception direct broadcast band Before video frame, the encoder obtains configuration information, includes the direct broadcast band for needing to intercept video frame in the configuration information Time cycle, the file format of poster and the resolution ratio of poster of mark, interception video frame.The encoder is matched according to Time cycle interception in confidence breath identifies in the video flowing of corresponding direct broadcast band with direct broadcast band in the configuration information Video frame generates poster according to the file format of the poster in the configuration information and the resolution ratio of poster.In the embodiment, It only needs to carry out easy configuration to encoder that direct broadcast band poster can be realized and automatically generates.
It further include the address of the poster server in possible embodiment, in the configuration information, poster is uploaded to The upload path of the poster server and poster are uploaded to the File Transfer Protocol that the poster server uses;The volume Code device according in the address of the poster server in the configuration information, the configuration information the upload path and The poster is uploaded to the poster server by the File Transfer Protocol in the configuration information.In the embodiment, It only needs to carry out easy configuration to encoder that encoder can be realized and uploads direct broadcast band poster automatically to poster server.
In possible embodiment, the poster server receives the poster that the encoder uploads, and connects newest The file name for the poster received notifies electron program guide (EPG) server, uses newest reception by the EPG server The file name of the poster update the file name of the poster of the direct broadcast band locally saved.In the embodiment, The file name of newest received poster is notified the application that direct broadcast band is realized to EPG server every time by poster server The automatic distributing of poster in scene, and the file name of newest poster can be synchronized to EPG server in real time, and by In only synchronous documents title, synchronous data volume is smaller, avoids and causes transmission pressure for system.
In possible embodiment, the poster server receives the direct broadcast band that the EPG server returns After the response message that the file name of poster is updated successfully, the history poster of the direct broadcast band is deleted, wherein the history sea It does not include the newest received poster in report, the response message is locally saved by the EPG server being successfully updated It is returned after the file name of the poster of the direct broadcast band.The embodiment can save the memory space of poster occupancy.
In possible embodiment, the EPG server includes center EPG server and edge EPG server;The side Edge EPG server receives the access request for the poster to the direct broadcast band that terminal is sent, and at least takes in the access request The file name of poster with the direct broadcast band;The edge EPG server obtain carried in the access request it is described The file name of poster, the center Xiang Suoshu EPG server send the poster acquisition request for carrying the file name of the poster;Institute The center EPG server of stating receives the poster acquisition request that the edge EPG server is sent, and is asked according to poster acquisition It asks, the corresponding poster of file name of the poster carried in the poster acquisition request is obtained from the poster server, The poster obtained is cached, and the poster that will acquire returns to the edge EPG server;The edge EPG service Device receives the poster that the center EPG server is returned according to the poster acquisition request, caches the poster and by institute It states poster and returns to the terminal.In the embodiment, in terminal request preview direct broadcast band for according to the poster of direct broadcast band File name by edge EPG server obtain poster, make it possible to provide newest poster for terminal, meet terminal pair The demand of direct broadcast band preview.
Second aspect, the embodiment of the invention provides a kind of posters of direct broadcast band to generate system, comprising:
Encoder, for the video frame in the video flowing according to preset period of time interception direct broadcast band, according to interception Video frame generates poster, and the poster is uploaded to poster server;
Poster server, the poster uploaded for obtaining the encoder.
This embodiment achieves posters in the application scenarios of direct broadcast band to automatically generate, and shortens poster fabrication cycle, Poster cost of manufacture is reduced, and can satisfy the demand of direct broadcast band preview.
In possible embodiment, the encoder is also used to: in the view according to preset period of time interception direct broadcast band Before video frame in frequency stream, configuration information is obtained, includes the direct broadcast band mark for needing to intercept video frame in the configuration information Know, time cycle, the file format of poster and the resolution ratio of poster of interception video frame.The encoder is specifically used for: root The view that corresponding direct broadcast band is identified with direct broadcast band in the configuration information is intercepted according to the time cycle in the configuration information Video frame in frequency stream generates poster according to the file format of the poster in the configuration information and the resolution ratio of poster.The reality It applies in mode, it is only necessary to direct broadcast band poster can be realized to encoder progress easy configuration and automatically generate.
It further include the address of the poster server in possible embodiment, in the configuration information, poster is uploaded to The upload path of the poster server and poster are uploaded to the File Transfer Protocol that the poster server uses;The volume Code implement body is used for: according to described in the address of the poster server in the configuration information, the configuration information The File Transfer Protocol in path and the configuration information is passed, the poster is uploaded to the poster server.It should In embodiment, it is only necessary to encoder can be realized to encoder progress easy configuration and upload direct broadcast band poster automatically to poster Server.
It further include electronic program guide (EPG) server in possible embodiment;The poster server, is also used to: will The file name of the newest received poster is notified to the EPG server;The EPG server, is used for: being connect using newest The file name for the poster received updates the file name of the poster of the direct broadcast band locally saved.The embodiment In, poster server notifies the file name of newest received poster to realize answering for direct broadcast band to EPG server every time With the automatic distributing of poster in scene, and the file name of newest poster can be synchronized to EPG server in real time, and Due to only synchronous documents title, synchronous data volume is smaller, avoids and causes transmission pressure for system.
In possible embodiment, the EPG server is also used to: Xiang Suoshu poster server returns to the direct broadcast band Poster the response message that is updated successfully of file name;The poster server is also used to: being received the EPG server and is returned The direct broadcast band poster the response message that is updated successfully of file name after, delete the history sea of the direct broadcast band Report, wherein do not include the newest received poster in the history poster.The embodiment can save poster occupancy Memory space.
In possible embodiment, the EPG server includes center EPG server and edge EPG server;The side Edge EPG server is used for: the access request for the poster to the direct broadcast band that reception terminal is sent, in the access request extremely The file name of the poster of the direct broadcast band is carried less, and the center Xiang Suoshu EPG server, which is sent, carries the direct broadcast band The poster acquisition request of the file name of poster;The center EPG server, is used for: according to edge EPG transmission Poster acquisition request obtains the poster of the direct broadcast band carried in the poster acquisition request from the poster server The corresponding poster of file name, the poster that caches the poster of acquisition, and will acquire return to the edge EPG service Device;The edge EPG server is used for: obtaining the center EPG server according to poster acquisition request return Poster caches the poster and the poster is returned to the terminal.In the embodiment, in terminal request preview direct broadcast band When for according to the file name of the poster of direct broadcast band by edge EPG server obtain poster, make it possible to provide for terminal Newest poster meets demand of the terminal to direct broadcast band preview.
The third aspect, the embodiment of the invention also provides a kind of encoders, comprising:
Screen capture module, for the video frame in the video flowing according to preset period of time interception direct broadcast band, according to interception Video frame generate poster;
Communication module, the poster for generating the screen capture module are uploaded to poster server.
Fourth aspect, the embodiment of the invention also provides a kind of poster servers, comprising:
Receiving module, for receiving the poster of encoder upload, the poster is by the encoder according to preset time week Phase generates after intercepting the video frame in the video flowing of direct broadcast band according to the video frame of interception;
Processing module, for passing through sending module for the file name of the newest received poster of the receiving module Notify electron program guide (EPG) server.
5th aspect, the embodiment of the invention also provides a kind of electronic program guide (EPG) servers, comprising:
Receiving module, the file name of the poster of the direct broadcast band for receiving the transmission of poster server;
Processing module updates local save for the file name using the newest received poster of the receiving module The direct broadcast band poster file name.
6th aspect, the embodiment of the invention also provides a kind of encoder, including processor, memory and communication interface, Wherein, preset program is preserved in memory, processor reads the program saved in memory, executes according to the program following Process: according to the video frame in the video flowing of preset period of time interception direct broadcast band, poster is generated according to the video frame of interception; The poster is uploaded to poster server by communication interface.
In possible embodiment, the processor is also used to: according to the video of preset period of time interception direct broadcast band Before video frame in stream, configuration information is obtained, identified in the configuration information including needing to intercept the direct broadcast band of video frame, Intercept time cycle, the file format of poster and the resolution ratio of poster of video frame.
In possible embodiment, the processor is specifically used for: being intercepted according to the time cycle in the configuration information The video frame in the video flowing of corresponding direct broadcast band is identified with direct broadcast band in the configuration information, according to the configuration information In poster file format and poster resolution ratio generate poster.
It further include the address of the poster server in possible embodiment, in the configuration information, poster is uploaded to The upload path of the poster server and poster are uploaded to the File Transfer Protocol that the poster server uses;The place Reason implement body is used for: according to described in the address of the poster server in the configuration information, the configuration information The File Transfer Protocol in path and the configuration information is passed, the poster is uploaded to the poster server.
7th aspect, the embodiment of the invention also provides a kind of poster server, which mainly includes processing Device, memory and communication interface, wherein preset program is preserved in memory, processor reads the program in memory, presses Following procedure is executed according to the program: the poster that encoder uploads being received by communication interface, by the file of newest received poster Title is notified by communication interface to EPG server.
In possible embodiment, the processor receives the described straight of the EPG server return by communication interface The response message that the file name of the poster of channel is updated successfully is broadcast, the response message is being succeeded more by the EPG server It is returned after the file name of the poster of the direct broadcast band newly locally saved;The processor connects by the communication interface After receiving the response message, the history poster of the direct broadcast band is deleted, wherein do not include described newest in the history poster Received poster.
Eighth aspect the embodiment of the invention also provides a kind of electronic program guide (EPG) server, including processor, is deposited Reservoir and communication interface, wherein preset program is preserved in memory, processor reads the program in memory, according to this Program executes following procedure: receiving the file name of the poster for the direct broadcast band that poster server is sent by communication interface, adopts The file name of the poster of the direct broadcast band locally saved is updated with the file name of newest received poster.
In possible embodiment, text of the processor in the poster for being successfully updated the direct broadcast band locally saved After part title, the response message being updated successfully is returned to the poster server by communication interface.
In possible embodiment, if the EPG server is edge EPG server, the processor is connect by communication Mouth receives the access request for the poster to the direct broadcast band that terminal is sent, and at least carries the live streaming in the access request The file name of the poster of channel;Obtain the file name of the poster carried in the access request;Pass through communication interface The poster acquisition request for carrying the file name of the poster obtained is sent to center EPG server;It is connect by communication interface Receive the poster that the center EPG server is returned according to the poster acquisition request;Cache the received poster;Pass through The received poster is returned to the terminal by communication interface.
In possible embodiment, if the EPG server is center EPG server, the processor is connect by communication Mouth receives the poster acquisition request of the file name for the carrying poster that edge EPG server is sent;It is obtained according to the poster Request is taken, the corresponding sea of file name of the poster carried in the poster acquisition request is obtained from the poster server Report, caches the poster of acquisition;The edge EPG server is returned to by the poster that communication interface will acquire.
9th aspect, the embodiment of the invention also provides a kind of computer readable storage mediums, wherein being stored with executable Program code, the program code is to realize method described in first aspect.
Detailed description of the invention
Fig. 1 is existing poster management system configuration diagram;
Fig. 2 is that the poster of direct broadcast band in the embodiment of the present invention generates system schematic;
Fig. 3 is the schematic illustration of encoder in the embodiment of the present invention;
Fig. 4 is the structural schematic diagram of encoder in the embodiment of the present invention;
Fig. 5 is the structural schematic diagram of poster server in the embodiment of the present invention;
Fig. 6 is the structural schematic diagram of EPG server in the embodiment of the present invention;
Fig. 7 is the generating process schematic diagram of the poster of direct broadcast band in the embodiment of the present invention;
Fig. 8 is the process schematic that the poster of another direct broadcast band in the embodiment of the present invention generates;
Fig. 9 is the distribution procedure schematic diagram of the poster of direct broadcast band in the embodiment of the present invention;
Figure 10 is the process schematic to access in the embodiment of the present invention to the poster of direct broadcast band;
Figure 11 is the complete procedure signal of generation, distribution and the access of the poster of direct broadcast band in the embodiment of the present invention Figure;
Figure 12 is the structural schematic diagram of another encoder in the embodiment of the present invention;
Figure 13 is the structural schematic diagram of another poster server in the embodiment of the present invention;
Figure 14 is the structural schematic diagram of another EPG server in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts All other embodiment, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, the poster for proposing direct broadcast band as shown in Figure 2 generates system, mainly wraps in the system Include encoder 201, poster server 202 and EPG server 203.Wherein, encoder 201, poster server 202 and EPG clothes Business device 203 is sequentially connected.
Wherein, encoder 201 belongs to head-end system 21.The head-end system 21 mainly includes sequentially connected signal receiver 204 and encoder 201.Signal receiver 204 receives the satellite broadcast signal of direct broadcast band by satellite receiver, and this is defended Star broadcast singal is demodulated into digital signal.Encoder 201 carries out real time codec to the digital signal that signal receiver exports, defeated The Media Stream encapsulated out through IP agreement, is supplied to terminal in a manner of multicast or unicast for the Media Stream.For example, being sealed through IP agreement The Media Stream of dress can be MPEG-2, HLS based on User Datagram Protocol (User Datagram Protocol, UDP) (HTTP Live Streaming) etc..
Specifically, in order to realize that the poster of direct broadcast band automatically generates, in the embodiment of the present invention, encoder 201 is to defeated The video flowing entered is decoded, and while recompiling to the video flowing obtained after decoding, encoder 201 is according to preset time week Phase intercepts video frame in the video flowing of direct broadcast band, generates poster according to the video frame of interception, the poster of generation is uploaded to sea Report server.In one specific implementation, it mainly includes Video decoding module 301, view that the schematic diagram of encoder 201, which is shown in Fig. 3, 304 4 frequency coding module 302, screen shot module 303 and Video Output Modules functional modules.Wherein Video decoding module 301 for being decoded the video flowing for being input to encoder.Video encoding module 302 is used to solve Video decoding module 301 The video flowing obtained after code recompiles.Screen shot module 303 is used in video encoding module 302 to Video decoding module The video flowing obtained after 301 decodings intercepts video frame while recompiling, and according to defeated after the video frame of screenshot generation poster The poster out.Video Output Modules 304 are for exporting the video flowing after video encoding module 302 recompiles.
In implementation, poster server 202 is mainly used for the poster of the upload of storage and management encoder 201.Specifically, poster Server 202 receives the poster that encoder 201 uploads, and the file name of the poster of newest upload is notified to EPG server 203.EPG server 203 is mainly used for receiving the file name for the poster that poster server 202 is sent, using newest received The file name of poster updates the file name of the poster of the direct broadcast band locally saved.
In one specific implementation, EPG server includes center EPG server 2031 and at least one edge EPG server 2032.Wherein, each edge EPG server 2032 is connect with center EPG server 2031 respectively, and each edge EPG takes Business device 2032 and center EPG server 2031 are respectively connected to poster server 202.Poster server 202 sends newest respectively The file name of the poster of the direct broadcast band of acquisition is to each edge EPG server and center EPG server.Each edge EPG Server and center EPG server respectively receive newest playbill file title and update the sea of the direct broadcast band locally saved The file name of report.
In implementation, EPG server is somebody's turn to do what the file name update of the poster using poster server notice locally saved After the file name of the poster of direct broadcast band, is returned to poster service and update response.If poster server is according to EPG server After the update of return is in response to determining that be updated successfully, the history poster of the direct broadcast band is deleted, it is newest only to retain the direct broadcast band One poster, to save memory space.If poster server fails according to the update that EPG server returns in response to determining that updating Or more than setting duration do not receive response, then delete the history poster of the channel, but need to retain newest poster and Previous poster of the newest poster.To the sea that in the case where EPG server updates and fails, EPG server is saved The file name of report is not newest, the file name of previous poster of newest poster, therefore obtains in terminal request If EPG server when poster is taken not cache locally, still poster can be successfully obtained from poster server.
In implementation, terminal takes edge EPG when being broadcast live band prebrowsing and needing to check the newest poster of direct broadcast band Business device initiates access request;If the poster be it is accessed for the first time, edge EPG server to center EPG server initiate pair The poster acquisition request of the poster;Center EPG server initiates the poster acquisition request to the poster to poster server, in sea Edge EPG server is returned in local cache, and by the poster after reporting server to return to poster;Edge EPG server obtains It takes and returns to terminal in local cache and by the poster after the poster, to realize the access to the poster of the direct broadcast band.
The structure of encoder 201 as shown in Figure 4 is additionally provided in the embodiment of the present invention, encoder 201 mainly includes place Manage device 401, memory 402 and communication interface 403, wherein preset program is preserved in memory 402, processor 401 is read The program saved in memory 402 executes following procedure according to the program: according to the view of preset period of time interception direct broadcast band Video frame in frequency stream generates poster according to the video frame of interception;The poster is uploaded to poster clothes by communication interface 403 Business device.
The structure of poster server 202 as shown in Figure 5 is additionally provided in the embodiment of the present invention, the poster server 202 It mainly include processor 501, memory 502 and communication interface 503, wherein preserve preset program in memory 502, locate The program in the reading memory 502 of device 501 is managed, executes following procedure according to the program: passing through communication interface 503 and receives encoder The poster of upload notifies the file name of newest received poster to EPG server by communication interface 503.
The embodiment of the invention also provides the structure of EPG server 203 as shown in FIG. 6, which mainly includes Processor 601, memory 602 and communication interface 603, wherein preset program is preserved in memory 602, processor 601 is read Program in access to memory 602 executes following procedure according to the program: receiving poster server by communication interface 603 and sends Direct broadcast band poster file name, using newest received poster file name update locally save the live streaming frequency The file name of the poster in road.
Based on the design, in first embodiment of the invention, the generating process of the poster of direct broadcast band is as shown in fig. 7, specific It is as follows:
Step 701: encoder is according to the video frame in the video flowing of preset period of time interception direct broadcast band, according to interception Video frame generate poster.
In implementation, encoder is first decoded the video flowing of input, what is recompiled to decoded video flowing Meanwhile video frame screenshot periodically is carried out to the video flowing that decoding generates, using the video frame of interception as poster.
In implementation, before the video frame in video flowing of the encoder according to preset period of time interception direct broadcast band, compile Code device needs to obtain configuration information, includes the direct broadcast band mark for needing to intercept video frame, interception video frame in the configuration information Time cycle, the file format of poster and the resolution ratio of poster.
Specifically, encoder is corresponding with direct broadcast band mark in configuration information according to the time cycle interception in configuration information Direct broadcast band video flowing in video frame, generated according to the file format of the poster in configuration information and the resolution ratio of poster Poster.
Step 702: poster is uploaded to poster server by encoder.
It further include the address of poster server in implementation, in the configuration information that encoder obtains, poster is uploaded to poster clothes The upload path of business device and poster are uploaded to the File Transfer Protocol of poster server use.Specifically, encoder is according to matching Address, the upload path in configuration information and the File Transfer Protocol in configuration information of poster server in confidence breath, Poster is uploaded to poster server.
In the embodiment, encoder obtains video frame to video flowing screenshot, generates poster according to the video frame of interception, and will The poster of generation uploads to poster server, to realize automatically generating for poster in the application scenarios of direct broadcast band, shortens Poster fabrication cycle, reduces poster cost of manufacture, and can satisfy the demand of direct broadcast band preview.
In one specific embodiment, the process that the poster of direct broadcast band generates is as shown in figure 8, specific as follows:
Step 801: encoder obtains configuration information, which includes the configuration of poster screenshot and upload configuration.
Wherein, the configuration of poster screenshot includes: the direct broadcast band mark for needing to intercept video frame, week time of interception video frame Phase, the file format of poster and resolution ratio of poster etc..For example, the time cycle of screenshot video frame can be configured to 30s.It uploads Configuration includes: the address of poster server, and poster is uploaded to the upload path of poster server and poster is uploaded to poster clothes The File Transfer Protocol that business device uses.Such as File Transfer Protocol is configured to sftp.
Step 802: encoder reads the video flowing of direct broadcast band input, solves to each video frame in video flowing Code, to decoded video flowing recompiled and IP encapsulation after export media packet while, according to step 801 obtain match Confidence breath after the time cycle for reaching interception video frame, and determines the direct broadcast band when needing screenshot, after intercepting current decoding Video frame, and according to step 801 obtain configuration information the video frame of interception is saved as into poster.
Specifically, in the file name of poster include direct broadcast band mark and screenshot when be accurate to the second time letter Breath, for example, the file name of poster is Channel1_20151225183020.png.
Step 803: encoder is uploaded to poster server according to the address of the poster server in configuration information, poster It uploads path and poster is uploaded to the File Transfer Protocol of poster server use, the poster of generation is uploaded into poster service Device.
Based on the design, in second embodiment of the invention, the distribution procedure of the poster of direct broadcast band is as shown in figure 9, specific It is as follows:
Step 901: poster server receives the poster that encoder uploads, and the file name of newest received poster is notified To EPG server.
Specifically, poster server, will be newest received by message mode after the poster for receiving encoder upload The file name of poster is notified to EPG server.Wherein message mode includes but is not limited to xmpp, http, socket etc. a variety of Any one in mode.
Specifically, poster server notifies the file name of newest received poster to center EPG server and each Edge EPG server.
Step 902:EPG server receives the file name of the poster of poster server notice, using the received poster File name update the file name of the poster of the direct broadcast band locally saved.
Optionally, EPG server returns to the result updated to poster server.
Step 903: poster server retains a newest poster for the direct broadcast band, deletes the history of the direct broadcast band Poster.
Specifically, poster server receives the result for the update that EPG server returns, if it is determined that the result of the update is It being updated successfully, poster server deletes the history poster of the direct broadcast band, only retain a newest poster for the direct broadcast band, To reduce the memory space occupied.
Poster server is if it is determined that the result of the update is to update failure or do not receive EPG within a specified time to service Device return update as a result, poster server is not deleted a newest poster in deleting history poster and is not deleted most Previous poster of a new poster.In the case that EPG server updates failure, the text for the poster that EPG server is saved Part title is not newest, the file name of previous poster of newest poster, therefore obtains poster in terminal request Shi Ruguo EPG server does not cache locally, still can successfully obtain poster from poster server.
Specifically, poster server, can be by the filename of newest received poster for updating the EPG server to fail The new notice of weighing gives the EPG server, updates the filename of the poster of the direct broadcast band locally saved again by EPG server Claim.
In the embodiment, poster server notifies the file name of the newest poster of direct broadcast band to EPG server, from And the automatic distributing of poster in the application scenarios of direct broadcast band is realized, and can be in real time by the file name of newest poster It is synchronized to EPG server, and due to only synchronous documents title, synchronous data volume is smaller, avoids and causes to transmit for system Pressure.
Based on the design, in third embodiment of the invention, process such as Figure 10 institute for accessing to the poster of direct broadcast band Show, specific as follows:
Step 1001: terminal sends the access request to the poster of direct broadcast band, the access request to edge EPG server In at least carry direct broadcast band poster file name.
Specifically, terminal is initiated to return to the access request of the http page to edge EPG server.Edge EPG server returns The element information of the http page is returned, the uniform resource locator of the newest poster comprising channel in the element information The file name of (Uniform Resoure Locator, URL) address information and poster, the file name of the poster are sea Report server notifies the file name of the poster to all EPG servers.The poster that terminal is returned according to edge EPG server The file name of URL address information and poster passes through http request to the corresponding poster text of edge EPG server request Part.
Step 1002: edge EPG server obtains the file name of the poster for the direct broadcast band that access request carries, judgement It is local whether to be cached with the poster, if so, the poster is directly then returned to terminal, and terminate.If not provided, to center EPG server sends the poster acquisition request for carrying the file name of the poster, executes step 1003.
Step 1003: center EPG server receives the poster acquisition request that edge EPG server is sent, and judges that local is The no poster for being cached with the poster acquisition request institute request, if so, the poster is directly then returned to edge EPG service Device;If not provided, the corresponding poster of file name of the poster carried in the poster acquisition request is obtained from poster server, and The poster obtained is cached, the poster that will acquire returns to edge EPG server.
Step 1004: edge EPG server obtains the poster that center EPG is returned and returns to terminal, and terminal can be obtained The newest poster of the direct broadcast band, to realize the poster preview of direct broadcast band.
In the embodiment, pass through in terminal request preview direct broadcast band for the file name of the poster according to direct broadcast band Edge EPG server obtains poster, makes it possible to provide newest poster for terminal, meets terminal to direct broadcast band preview Demand.
In one specific embodiment, complete procedure such as Figure 11 institute of generation, distribution and the access of the poster of direct broadcast band Show, specific as follows:
Step 1101: encoder cycle intercepts video frame from the video flowing of direct broadcast band, according to the video frame of screenshot Generate poster;
Step 1102: the poster of generation is uploaded to poster server by encoder;
Step 1103: poster server notifies the file name of the poster of newest upload to give center EPG server;
Step 1104: center EPG server is managed using the file name update of the poster of poster server notice The file name of the poster of direct broadcast band;
Step 1105: center EPG server is returned to poster server updates response;
Step 1106: poster server notifies the file name of the poster of newest upload to edge EPG server;
Step 1107: edge EPG server is managed using the file name update of the poster of poster server notice The file name of the poster of direct broadcast band;
Step 1108: edge EPG server is returned to poster server updates response;
Step 1109: poster server is if it is determined that the update response that center EPG server and edge EPG server return It is success, then retains a newest poster for the direct broadcast band, deleting history poster;
Step 1110: terminal initiates http page request to edge EPG server, and request is broadcast live band prebrowsing;
Step 1111: edge EPG server returns to the element information of the http page, and live streaming frequency is included in the element information The URL address information of the newest poster in road and the file name of poster, the file name of the poster are that poster server is logical Know the file name of the poster to all EPG servers;
Step 1112: the URL address information for the poster that terminal is returned according to edge EPG server and the filename of poster Claim, which is obtained by http to edge EPG server;
Step 1113: edge EPG server judges whether there is the poster in local cache, if so, directly from local slow Middle acquisition poster is deposited, if not provided, turning to go to execute step 1114;
Step 1114: edge EPG server initiates poster acquisition request, the poster acquisition request to center EPG server The middle file name for carrying the poster;
Step 1115: center EPG server judges whether there is the corresponding poster of the file name of the poster in local cache, If so, the poster is directly obtained from local cache, if not provided, turning to go to execute step 1116;
Step 1116: center EPG server sends poster acquisition request to poster server, takes in the poster acquisition request File name with the poster;
Step 1117: poster server returns to the poster to center EPG server;
Step 1118: center EPG server caches the poster;
Step 1119: center EPG server returns to the poster to edge EPG server;
Step 1120: edge EPG server caches the poster that center EPG server returns;
Step 1121: edge EPG server returns to the poster to terminal, so that terminal can see the sea of the direct broadcast band Report, is broadcast live band prebrowsing.
Based on same design, the structure of encoder as shown in figure 12 is additionally provided in the embodiment of the present invention, the encoder It specifically includes that
Screen capture module 1201, the video frame in video flowing for intercepting direct broadcast band according to preset period of time, according to The video frame of interception generates poster;
Communication module 1202, the poster for generating the screen capture module 1201 are uploaded to poster server.
In implementation, the processor 401 in the structure of the encoder of the function of screen capture module 1201 as shown in Figure 4 is realized, is led to Believe that the communication interface 403 in the structure of the encoder of the function of module 1202 as shown in Figure 4 is realized.
In implementation, the screen capture module is also used to:
Before the video frame in the video flowing of preset period of time interception direct broadcast band, configuration information is obtained, it is described Include in configuration information the direct broadcast band mark for needing to intercept video frame, interception time cycle of video frame, poster tray The resolution ratio of formula and poster.
In implementation, the screen capture module is specifically used for:
It is corresponding with direct broadcast band mark in the configuration information straight according to the time cycle interception in the configuration information The video frame in the video flowing of channel is broadcast, is generated according to the file format of the poster in the configuration information and the resolution ratio of poster Poster.
It further include the address of the poster server in implementation, in the configuration information, poster is uploaded to the poster clothes The upload path of business device and poster are uploaded to the File Transfer Protocol that the poster server uses;The communication module is specific For: according to the upload path in the address of the poster server in the configuration information, the configuration information with And the File Transfer Protocol in the configuration information, the poster is uploaded to the poster server.
Based on same design, poster server as shown in fig. 13 that is additionally provided in the embodiment of the present invention, structure is specifically wrapped It includes:
Receiving module 1301, for receive encoder upload poster, the poster by the encoder according to it is default when Between the period interception direct broadcast band video flowing in video frame after according to the video frame of interception generate;
Processing module 1302, for passing through transmission for the file name of the newest received poster of the receiving module Module 1303 notifies electron program guide (EPG) server.
In implementation, the processor 501 in the structure of the poster server of the function of processing module 1302 as shown in Figure 5 is real It is existing, the communication interface 503 in the structure of the poster server of the function of receiving module 1301 and sending module 1303 as shown in Figure 5 It realizes.
In implementation, the receiving module is also used to: receiving the poster for the direct broadcast band that the EPG server returns The response message that file name is updated successfully, the response message are being successfully updated the institute locally saved by the EPG server It is returned after stating the file name of the poster of direct broadcast band;
The processing module is also used to: after the receiving module receives the response message, deleting the direct broadcast band History poster, wherein do not include the newest received poster in the history poster.
Based on same design, EPG server as shown in figure 14 is additionally provided in the embodiment of the present invention, structure is specifically wrapped It includes:
Receiving module 1401, the file name of the poster of the direct broadcast band for receiving the transmission of poster server;
Processing module 1402 updates local for the file name using the newest received poster of the receiving module The file name of the poster of the direct broadcast band saved.
Further include sending module 1403 in implementation, for the processing module be successfully updated locally save it is described straight After the file name for broadcasting the poster of channel, Xiang Suoshu poster server returns to the response message being updated successfully.
In implementation, the processor 601 in the structure of the EPG server of the function of processing module 1402 as shown in Figure 6 is realized, Communication interface 603 in the structure of the EPG server of the function of receiving module 1401 and sending module 1403 as shown in Figure 6 is real It is existing.
In implementation, if the EPG server is edge EPG server, the receiving module is also used to: being received terminal and is sent The poster to the direct broadcast band access request, the text of the poster of the direct broadcast band is at least carried in the access request Part title;
The processing module is also used to: obtaining the poster carried in the received access request of the receiving module File name;
The sending module is used for: Xiang Zhongxin EPG server sends the poster for carrying that the processing module obtains The poster acquisition request of file name;
The receiving module is also used to: receiving the institute that the center EPG server is returned according to the poster acquisition request State poster;
The processing module is also used to: caching the received poster of the receiving module;
The sending module is also used to: the received poster of the receiving module is returned to the terminal.
In implementation, if the EPG server is center EPG server, the receiving module is also used to: receiving edge EPG The poster acquisition request of the file name for the carrying poster that server is sent;
The processing module is also used to: according to the poster acquisition request, obtaining the poster from the poster server The corresponding poster of the file name of the poster carried in acquisition request caches the poster of acquisition;
The sending module is also used to: the poster that will acquire returns to the edge EPG server.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.) Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (17)

1. a kind of poster generation method of direct broadcast band characterized by comprising
Encoder is generated according to the video frame in the video flowing of preset period of time interception direct broadcast band according to the video frame of interception Poster;
The poster is uploaded to poster server by the encoder;
The method also includes:
The poster server receives the poster that the encoder uploads, by the file name of the newest received poster It notifies electron program guide (EPG) server, the file name of the newest received poster is used more by the EPG server The file name of the poster of the direct broadcast band newly locally saved.
2. the method as described in claim 1, which is characterized in that intercept live streaming frequency according to preset period of time in the encoder Before video frame in the video flowing in road, the method also includes:
The encoder obtains configuration information, includes the direct broadcast band mark for needing to intercept video frame in the configuration information, cuts Take the resolution ratio of the time cycle of video frame, the file format of poster and poster.
3. method according to claim 2, which is characterized in that the encoder intercepts direct broadcast band according to preset period of time Video flowing in video frame, according to the video frame of interception generate poster, comprising:
The encoder is according to the time cycle interception in the configuration information and direct broadcast band mark pair in the configuration information Video frame in the video flowing for the direct broadcast band answered, according to the resolution of the file format of the poster in the configuration information and poster Rate generates poster.
4. method as claimed in claim 2 or claim 3, which is characterized in that further include the poster server in the configuration information Address, poster is uploaded to the upload path of the poster server and poster is uploaded to the text that the poster server uses Part transport protocol;
The poster is uploaded to poster server by the encoder, comprising:
The encoder is according on described in the address of the poster server in the configuration information, the configuration information The File Transfer Protocol in path and the configuration information is passed, the poster is uploaded to the poster server.
5. the method as described in claim 1, which is characterized in that the method also includes:
The file name that the poster server receives the poster for the direct broadcast band that the EPG server returns is updated successfully Response message after, delete the history poster of the direct broadcast band, wherein do not include the newest reception in the history poster Poster, the response message by the EPG server the poster for being successfully updated the direct broadcast band locally saved text It is returned after part title.
6. the method as described in claim 1, which is characterized in that the EPG server includes center EPG server and edge EPG server;
The method also includes:
The edge EPG server receives the access request for the poster to the direct broadcast band that terminal is sent, and the access is asked The file name of the poster of the direct broadcast band is at least carried in asking;
The edge EPG server obtains the file name of the poster carried in the access request, the center Xiang Suoshu EPG Server sends the poster acquisition request for carrying the file name of the poster;
The center EPG server receives the poster acquisition request that the edge EPG server is sent, according to the poster Acquisition request, the file name for obtaining the poster carried in the poster acquisition request from the poster server are corresponding Poster, caches the poster of acquisition, and the poster that will acquire returns to the edge EPG server;
The edge EPG server receives the poster that the center EPG server is returned according to the poster acquisition request, It caches the poster and the poster is returned into the terminal.
7. a kind of poster of direct broadcast band generates system characterized by comprising
Encoder, for the video frame in the video flowing according to preset period of time interception direct broadcast band, according to the video of interception Frame generates poster, and the poster is uploaded to poster server;
Poster server, the poster uploaded for obtaining the encoder;
It further include electronic program guide (EPG) server;
The poster server, is also used to:
The file name of the newest received poster is notified to the EPG server;
The EPG server, is used for:
The filename of the poster of the direct broadcast band locally saved is updated using the file name of the newest received poster Claim.
8. system as claimed in claim 7, which is characterized in that the encoder is also used to:
Before the video frame in the video flowing according to preset period of time interception direct broadcast band, configuration information is obtained, it is described to match Include in confidence breath the direct broadcast band mark for needing to intercept video frame, interception time cycle of video frame, poster file format And the resolution ratio of poster.
9. system as claimed in claim 8, which is characterized in that the encoder is specifically used for:
Live streaming frequency corresponding with direct broadcast band mark in the configuration information is intercepted according to the time cycle in the configuration information Video frame in the video flowing in road generates sea according to the file format of the poster in the configuration information and the resolution ratio of poster Report.
10. system as claimed in claim 8 or 9, which is characterized in that further include the poster server in the configuration information Address, poster is uploaded to the upload path of the poster server and poster is uploaded to the text that the poster server uses Part transport protocol;
The encoder is specifically used for:
According in the address of the poster server in the configuration information, the configuration information the upload path and The poster is uploaded to the poster server by the File Transfer Protocol in the configuration information.
11. system as claimed in claim 7, which is characterized in that the EPG server is also used to:
The response message that the file name for the poster for returning to the direct broadcast band to the poster server is updated successfully;
The poster server is also used to:
After receiving the response message that the file name of the poster for the direct broadcast band that the EPG server returns is updated successfully, Delete the history poster of the direct broadcast band, wherein do not include the newest received poster in the history poster.
12. the system as described in claim 7 or 11, which is characterized in that the EPG server include center EPG server and Edge EPG server;
The edge EPG server is used for:
The access request for the poster to the direct broadcast band that terminal is sent is received, is at least carried in the access request described straight The file name of the poster of channel is broadcast, the center Xiang Suoshu EPG server sends the filename for carrying the poster of the direct broadcast band The poster acquisition request of title;
The center EPG server, is used for:
According to the poster acquisition request that the edge EPG is sent, the poster acquisition is obtained from the poster server and is asked The corresponding poster of file name for seeking the poster of the direct broadcast band of middle carrying, caches the poster of acquisition, and will acquire The poster return to the edge EPG server;
The edge EPG server is used for:
The poster that the center EPG server is returned according to the poster acquisition request is obtained, the poster is cached and is incited somebody to action The poster returns to the terminal.
13. a kind of poster server characterized by comprising
Receiving module, for receiving the poster of encoder upload, the poster is cut by the encoder according to preset period of time It is generated after taking the video frame in the video flowing of direct broadcast band according to the video frame of interception;
Processing module, for being notified by sending module by the file name of the newest received poster of the receiving module Electron program guide (EPG) server;
The receiving module is also used to: receiving the file name of the poster for the direct broadcast band that the EPG server returns more New successful response message, the response message are being successfully updated the direct broadcast band locally saved by the EPG server Poster file name after return;
The processing module is also used to: after the receiving module receives the response message, deleting going through for the direct broadcast band History poster, wherein do not include the newest received poster in the history poster.
14. a kind of electronic program guide (EPG) server characterized by comprising
Receiving module, the file name of the poster of the direct broadcast band for receiving the transmission of poster server;
Processing module, for updating the institute locally saved using the file name of the newest received poster of the receiving module State the file name of the poster of direct broadcast band.
15. EPG server as claimed in claim 14, which is characterized in that further include sending module, in the processing mould After block is successfully updated the file name of the poster of the direct broadcast band locally saved, the return of Xiang Suoshu poster server is updated to The response message of function.
16. EPG server as claimed in claim 15, which is characterized in that if the EPG server is edge EPG server, The receiving module is also used to: receiving the access request for the poster to the direct broadcast band that terminal is sent, the access request In at least carry the direct broadcast band poster file name;
The processing module is also used to: obtaining the text of the poster carried in the received access request of the receiving module Part title;
The sending module is used for: Xiang Zhongxin EPG server sends the file for carrying the poster that the processing module obtains The poster acquisition request of title;
The receiving module is also used to: receiving the sea that the center EPG server is returned according to the poster acquisition request Report;
The processing module is also used to: caching the received poster of the receiving module;
The sending module is also used to: the received poster of the receiving module is returned to the terminal.
17. EPG server as claimed in claim 15, which is characterized in that if the EPG server is center EPG server, The receiving module is also used to: the poster acquisition for receiving the file name for the carrying poster that edge EPG server is sent is asked It asks;
The processing module is also used to: according to the poster acquisition request, being obtained the poster from the poster server and is obtained The corresponding poster of the file name of the poster carried in request caches the poster of acquisition;
The sending module is also used to: the poster that will acquire returns to the edge EPG server.
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