CN104602115A - Method and system for switching of network television channels - Google Patents
Method and system for switching of network television channels Download PDFInfo
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- CN104602115A CN104602115A CN201510016181.1A CN201510016181A CN104602115A CN 104602115 A CN104602115 A CN 104602115A CN 201510016181 A CN201510016181 A CN 201510016181A CN 104602115 A CN104602115 A CN 104602115A
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- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
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- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
An embodiment of the invention provides a method and system for switching of network television channels. The method comprises the steps that a switching request of a target channel is received; when decoding information is configured for the target channel in advance, streaming media data corresponding to the target channel are downloaded and played according to the decoding information; a feature channel associated with the target channel is calculated; corresponding decoding information is configured for the feature channel. According to the method and system for switching of the network television channels, in the channel switching process, when the decoding information is configured for the target channel in advance, decoding operation and playing operation are conducted by means of the decoding information which is configured in advance, and therefore the time needed by configuration of the decoding information in the channel switching process is shortened, and the switching speed of the network television channels is increased.
Description
Technical field
The present invention relates to multimedia data processing field, particularly relate to a kind of changing method of channels of network TV and a kind of switched system of channels of network TV.
Background technology
Along with the development of Web TV technology, IPTV (IPTV) becomes a kind of new mode of people's TV reception.IPTV utilizes computer or Set Top Box+TV to complete the functions such as network program request or network direct broadcasting.Because Web TV has multiple different channel programme televised live and request program, user can pass through switching TV channel, watches required TV programme.
At present, because the video encoding form of different channel is different, when user needs to carry out channel switch, need again to prepare corresponding decoded information according to the coded format of channel, specifically comprise: obtain and resolve the coded format of channel, configure decoder according to coded format and open the operations such as decoder.Will the regular hour be taken when preparing corresponding decoded information, thus cause the slow-footed problem of zapping.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide a kind of changing method of channels of network TV, improves the switch speed of channels of network TV.
Accordingly, the embodiment of the present invention additionally provides a kind of switched system of channels of network TV, in order to ensure the implementation and application of said method.
In order to solve the problem, the invention discloses a kind of changing method of channels of network TV, comprising:
The handover request of receiving target channel;
When target channel pre-configured decoded information, download the stream medium data that target channel is corresponding, and stream medium data is play according to decoded information;
Calculate the feature channel associated with target channel;
The decoded information corresponding to feature channel assignment.
In order to solve the problem, the invention also discloses a kind of switched system of channels of network TV, comprising:
Handover request receiving element, for the handover request of receiving target channel;
Stream medium data broadcast unit, for exist when target channel pre-configured decoded information time, download stream medium data corresponding to target channel, and stream medium data play according to decoded information;
Feature channel computing unit, for calculating the feature channel associated with target channel;
Decoded information dispensing unit, for the decoded information corresponding to feature channel assignment.
Compared with prior art, the embodiment of the present invention comprises following advantage:
The embodiment of the present invention is when channel switch, when target channel pre-configured decoded information, pre-configured decoded information is then utilized to carry out decoding and playing, thus the time of configuration needed for decoded information when reducing switching channels, improve the switch speed of channels of network TV.
And, the embodiment of the present invention is by the decoded information of the pre-configured correspondence of feature channel to association, make upper once carry out channel switch time, pre-configured decoded information can be utilized equally to carry out decoding and playing, thus the time of configuration needed for decoded information when reducing switching channels, improve the switch speed of channels of network TV.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the changing method embodiment 1 of a kind of channels of network TV of the present invention;
Fig. 2 is the flow chart of steps of the changing method embodiment 2 of a kind of channels of network TV of the present invention;
Fig. 3 is the flow chart of steps of the changing method embodiment 3 of a kind of channels of network TV of the present invention;
Fig. 4 is the structured flowchart of the switched system embodiment 1 of a kind of channels of network TV of the present invention;
Fig. 5 is the structured flowchart of the switched system embodiment 2 of a kind of channels of network TV of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
One of core idea of the embodiment of the present invention is, when channel switch, when target channel pre-configured decoded information, pre-configured decoded information is then utilized to carry out decoding and playing, thus the time prepared when reducing switching channels needed for corresponding decoding information, improve the switch speed of channels of network TV.
With reference to Fig. 1, show the flow chart of steps of the changing method embodiment of a kind of channels of network TV of the present invention, specifically can comprise the steps:
Step 101, the handover request of receiving target channel;
It should be noted that, channels of network TV can refer to the channels of network TV of network program request and the network direct broadcasting realized the broadcasting of the files in stream media of HLS based on HLS technology (HTTP LiveStreaming, HTTP real time flow medium).A large-sized media file is partitioned into many undersized Streaming Media slicing files and transmits by HLS protocol, and adopts the m3u8 index file constantly updated to control download and the broadcasting of these Streaming Media slicing files.Because Streaming Media fragment data is split to form by a large-sized media file, the partition length of each Streaming Media fragment data is determined by server, is generally the length of about 9 seconds.
In specific implementation, target channel can refer to that user needs the channel carrying out immediately playing.The handover request of target channel can refer to that the current channel by Web TV is switched to the command information of target channel.
In actual applications, the handover request of target channel can comprise the information such as target channel value.
Step 102, when target channel pre-configured decoded information, downloads the stream medium data that target channel is corresponding, and is play according to decoded information by stream medium data;
It should be noted that, decoded information can refer to the information for decoding to the stream medium data downloaded.
In specific implementation, decoded information can comprise the decoding process of coded format corresponding to target channel and correspondence.H.264 wherein, coded format can comprise MPEG, the coded format such as, and the embodiment of the present application does not limit this.
In actual applications, the step configuring decoded information can comprise following sub-step: the decoded information obtaining channel; Corresponding decoding firmware is loaded to decoder according to decoded information; Open decoder.Pre-configured decoded information can refer to before receiving the handover request of target channel, performs the step of configuration decoded information in advance, namely obtains the decoded information of channel; Corresponding decoding firmware is loaded to decoder according to decoded information; Open decoder.
The decoded information obtaining channel can refer to the decoding process obtaining coded format corresponding to channel and correspondence.Specifically can by obtaining the information in files in stream media, as index file, obtain coded format corresponding to channel and decoding process, also can by searching the default file recording the decoding process of the corresponding coded format of each channel and correspondence, obtain coded format corresponding to channel and decoding process, can also be obtained the decoded information of channel by other feasible modes, the embodiment of the present application does not limit this.
It should be noted that, configuration decoded information can by decoded information configuration in decoder, also can have in the module of decoding function to other by decoded information configuration, those skilled in the art can be arranged according to the situation of reality, and the embodiment of the present application does not limit this.
It should be noted that, decoding firmware can refer to the program for decoding to the stream medium data of specific coding form.
Step 103, calculates the feature channel associated with target channel;
It should be noted that, feature channel can refer to and judge that user may need the channel carrying out playing by preset rules.
In specific implementation, the incidence relation of feature channel and target channel can refer to and pre-set by transporting pipe personnel, or, obtained by preset rules.Feature channel can comprise the channel adjacent with target channel, also the channel, the interested channel of user etc. that belong to identical type with target channel can be comprised, such as: target channel is CCTV1, feature channel is CCTV3, etc., those skilled in the art can define feature channel according to the actual needs.The embodiment of the present application does not limit this.
In actual applications, when feature channel is adjacent channel, two adjacent channel values of target channel can be calculated according to the target channel value of handover request.When feature channel is the channel of type identical with target channel, by extracting the type identification of target channel, the channel being preset with identical type identification can be searched, obtaining the feature channel associated with target channel.Type identification can be the character string for representing channel program type.
Step 104, the decoded information corresponding to feature channel assignment.
In actual applications, step 104 can comprise following sub-step:
Sub-step 104a, obtains the decoded information of feature channel;
Sub-step 104b, loads corresponding decoding firmware to decoder according to decoded information;
Sub-step 104c, opens decoder.
The embodiment of the present application is when channel switch, when target channel pre-configured decoded information, pre-configured decoded information is then utilized to carry out decoding and playing, thus the time of configuration needed for decoded information when reducing switching channels, improve the switch speed of channels of network TV.
And, the embodiment of the present invention is by the decoded information of the pre-configured correspondence of feature channel to association, make upper once carry out channel switch time, pre-configured decoded information can be utilized equally to carry out decoding and playing, thus the time prepared when reducing switching channels needed for corresponding decoding information, improve the switch speed of channels of network TV.
With reference to Fig. 2, show the flow chart of steps of the changing method embodiment 2 of a kind of channels of network TV of the present invention, specifically can comprise the steps:
Step 201, the handover request of receiving target channel;
Step 202, when target channel pre-configured decoded information, downloads the stream medium data that target channel is corresponding, and is play according to decoded information by stream medium data;
Step 203, calculates the feature channel associated with target channel;
Step 204, the decoded information corresponding to feature channel assignment.
In the embodiment of the present application, step 204 can comprise following sub-step:
Sub-step 204a, obtains the decoded information of feature channel;
In specific implementation, sub-step 204a can comprise following sub-step:
Sub-step A1, the index file that download features channel is corresponding;
In specific implementation, index file can be m3u8 index file.Index file can comprise the decoded information of feature channel.
Sub-step A2, extracts the decoded information of feature channel in index file.
Sub-step 204b, loads corresponding decoding firmware to decoder according to decoded information;
Sub-step 204c, opens decoder.
In a preferred embodiment of the present application, stream medium data can be Streaming Media fragment data, and index file can also comprise Streaming Media attribute and the connection of Streaming Media fragment data of feature channel, and step 204 can also comprise following sub-step:
Sub-step 204d, when the Streaming Media attribute of feature channel is for some broadcasting flow-medium, connects according to Streaming Media fragment data and downloads fore flow media slicing data.
In specific implementation, Streaming Media attribute can refer to the attribute information of stream medium data.Specifically can comprise a broadcasting flow-medium, and, live broadcast stream media etc.
In actual applications, Streaming Media fragment data connects the web download link that can refer to Streaming Media fragment data.Concrete form can comprise: the modes such as URL (Uniform Resource Locator, URL(uniform resource locator)).Connecting according to Streaming Media fragment data the fore flow media slicing data obtained can be the media slicing data cube computation recorded by index file, by media slicing data cube computation, downloads corresponding fore flow media slicing data.
It should be noted that, fore flow media slicing data can refer in Streaming Media fragment data, are arranged in one or more Streaming Media fragment data of start-up portion.Such as: the 1st Streaming Media fragment data, or, 1-5 Streaming Media fragment data, 1-10 Streaming Media fragment data etc.Those skilled in the art can define fore flow media slicing data as required.The application does not limit this.
The application's preferred embodiment is the feature channel of the association of a broadcasting flow-medium for Streaming Media attribute, not only prepares decoded information in advance, also the fore flow media slicing data of download features channel in advance.Because fore flow media slicing data are relative to very little whole code stream, therefore, by preparing decoded information and fore flow media slicing data in advance, can be about to when switching channels to prepare decoded information in advance and fore flow media slicing data are play, thus when obviously not increasing offered load, further increase the speed of switching.
In a preferred embodiment of the present application, step 204 can also comprise following sub-step:
Sub-step 204e, adds initialisation identifications to the feature channel configuring corresponding decoded information.
It should be noted that, initialisation identifications can refer to the character string having configured corresponding decoded information for representation feature channel.
In a preferred embodiment of the present application, before the step 204, can also comprise the steps:
Step 204-1, whether judging characteristic channel has configured corresponding decoded information; If not, then step 204 is performed.
In actual applications, whether can have initialisation identifications by judging characteristic channel, determine whether feature channel has configured corresponding decoded information.
In a preferred embodiment of the present application, can also comprise the steps:
Step 205, judges whether the channel of pre-configured decoded information is the feature channel associated with target channel; If so, then step 206 is performed; If not, then step 207 is performed.
In actual applications, because initialisation identifications can refer to the character string having configured corresponding decoded information for representation feature channel, therefore, specifically can by judging whether channel has the channel that initialisation identifications determines whether pre-configured decoded information.
In specific implementation, step 205 can be trigger when switching channels, also can be trigger after switching channels completes again.Those skilled in the art can be arranged this according to actual needs, and the embodiment of the present application does not limit this.
Step 206, retains the decoded information of the channel of pre-configured decoded information;
Step 207, destroys the decoded information of the channel of pre-configured decoded information.
In specific implementation, the decoded information destroying the channel of pre-configured decoded information can refer to the decoded information such as index file, decoding firmware that the channel of the pre-configured decoded information of deletion is corresponding.The decoded information destroying the channel of pre-configured decoded information can also comprise removes initialisation identifications corresponding to channel.
The application's preferred embodiment is by judging whether the channel of pre-configured decoded information is the feature channel associated with target channel, the decoded information of the feature channel associated with target channel is retained, use when waiting until next channel switch, reduce repeated downloads and cause the waste of resource; The decoded information not being the feature channel associated with target channel is destroyed, discharges the resource of the channel of these pre-configured decoded informations, thus reduce taking of resource, also avoid the burden of network and the waste of resource.
With reference to Fig. 3, show the flow chart of steps of the changing method embodiment 3 of a kind of channels of network TV of the present invention, specifically can comprise the steps:
Step 301, the handover request of receiving target channel;
Step 302, when target channel pre-configured decoded information, downloads the stream medium data that target channel is corresponding, and is play according to decoded information by stream medium data;
In the embodiment of the present application, step 302 can comprise following sub-step:
Sub-step 302a, when handover request for target channel pre-configured decoded information time, the connection of display channel is switched to corresponding decoder;
In a preferred embodiment of the present application, sub-step 302a may further include following sub-step:
Sub-step B1, when handover request for target channel pre-configured decoded information time, disconnect the connection of display channel and current decoder;
In actual applications, current decoder can refer to the decoder used before switching channels.
In specific implementation, sub-step B1 may further include following sub-step:
Sub-step B11, stops injecting stream medium data;
Sub-step B12, removes and exports buffer memory;
It should be noted that, export buffer memory and can refer to the stream medium data of having decoded stored in the buffer.
Sub-step B13, removes decoded information buffer memory;
It should be noted that, decoded information buffer memory can refer to the decoded information stored in the buffer.
Sub-step B2, sets up the connection of display channel and the pre-configured decoder of target channel.
In specific implementation, sub-step B2 may further include following sub-step:
Sub-step B21, obtains the mark of decoder;
It should be noted that, the mark of decoder can refer to the character string for identifying decoder.
Sub-step B22, using the display data input connecting interface of mark as parameter call display channel.
It should be noted that, display data input connecting interface can refer to for the interface to display channel input display data.Interface can be API (Application Programming Interface, application programming interface).
Sub-step 302b, downloads the stream medium data that target channel is corresponding;
In a preferred embodiment of the present application, stream medium data can be Streaming Media fragment data, and handover request can comprise the burst number of Streaming Media fragment data, and sub-step 302b may further include following sub-step:
Sub-step C1, searches Streaming Media fragment data corresponding to target channel according to the burst in handover request number;
In actual applications, burst number can refer to the character string for identifying each Streaming Media fragment data.Because whole stream medium data has been divided into several Streaming Media fragment datas by streaming media server, therefore, can pass through to use 0,1 successively ..., n burst number is labelled to each Streaming Media fragment data.Burst number can be stored in index file.
Sub-step C2, downloads the Streaming Media fragment data that target channel is corresponding.
In actual applications, downloading Streaming Media fragment data corresponding to target channel can be the 1st or the n-th Streaming Media fragment data downloading target channel.
In specific implementation, by connecting according to searching Streaming Media fragment data corresponding to target channel in the burst indexed file in handover request, can be connected by the Streaming Media fragment data of correspondence, downloading the Streaming Media fragment data that target channel is corresponding.
In a preferred embodiment of the present application, stream medium data can be Streaming Media fragment data, and handover request can comprise current time, and sub-step 302b may further include following sub-step:
Sub-step D1, searches Streaming Media fragment data corresponding to target channel according to the current time in handover request;
It should be noted that, current time can refer in the time sending handover request.
In specific implementation, in the index file of target channel, search corresponding Streaming Media fragment data according to the current time in handover request and connect, connected by the Streaming Media fragment data of correspondence, download the Streaming Media fragment data that target channel is corresponding.
Sub-step D2, downloads the Streaming Media fragment data that target channel is corresponding.
Sub-step 302c, decodes stream medium data according to decoded information;
Sub-step 302d, outputs to display channel by the stream medium data of decoding and plays.
Step 303, calculates the feature channel associated with target channel;
Step 304, the decoded information corresponding to feature channel assignment.
In the embodiment of the present application, when handover request for target channel pre-configured decoded information time, by the connection of display channel being switched to corresponding decoder, download the stream medium data that target channel is corresponding, thus achieve when target channel existence pre-configured decoded information, streaming media data are play according to decoded information.Owing to needing the decoder of target channel be switched to be ready to, thus achieve and switch fast.
For making those skilled in the art understand the embodiment of the present application better, the changing method of channels of network TV in the embodiment of the present invention is described below by way of concrete example.
Receive user to after the handover request of target channel, first obtain according to the channel list of key value and the page target channel that user will play.If target channel exist pre-configured decoded information time, old display channel can be disconnected be connected with decoder, and preprepared decoder is connected to display channel gets on, and carry out according to number real-time download stream media slicing data of the burst in handover request, and be injected in decoder by Streaming Media fragment data and decode, thus achieve the switching of channel.
Fortune pipe personnel can arrange the adjacent channel that feature channel is target channel.While broadcasting, the adjacent channel adjacent with target channel can be calculated, and prejudge the decoded information whether adjacent channel has configured correspondence; If be configured, then do not carry out repeated configuration; If not configuration, decoded information that will be corresponding to adjacent channel configuration, namely obtains the decoded information of adjacent channel in advance; Corresponding decoding firmware is loaded to decoder according to decoded information; Open decoder.
In the process of the decoded information corresponding to adjacent channel configuration, need the codec format obtaining adjacent channel, configure corresponding decoder, the codec format of decoder is by downloading the index file of adjacent channel, and the decoded information extracting feature channel in index file obtains.Index file is m3u8 index file, which depict the essential information of Streaming Media, comprises the information such as coded format of the connection of Streaming Media fragment data, program duration, Streaming Media attribute, video-audio decoder.Load corresponding decoding firmware in decoder according to the coded format of adjacent channel, initialization flag being set, avoiding repetition initialization, and in advance decoder is opened, decoding with the stream medium data prepared downloading.
Meanwhile, also can judge whether the channel of pre-configured decoded information is the feature channel associated with target channel, if so, then retain the decoded information of the channel of pre-configured decoded information, use when waiting until next channel switch; If not, then by destroying this decoder and discharging the mode such as related resource, reset initialization mark, the decoded information of the channel destroying pre-configured decoded information can be realized, to reduce taking of resource.
The Streaming Media attribute of adjacent channel is extracted in indexed file, if the Streaming Media attribute of adjacent channel is a broadcasting flow-medium, because the stream medium data of program request does not exist out-of-date problem, then download first Streaming Media fragment data, and play when first Streaming Media fragment data is injected in ready decoder and waits for channel switch.If the Streaming Media attribute of adjacent channel is live broadcast stream media, then do not carry out the download of stream medium data in advance, because these data are real-time, the data of download also can because of expired and useless.
It should be noted that, for embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the embodiment of the present invention is not by the restriction of described sequence of movement, because according to the embodiment of the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action might not be that the embodiment of the present invention is necessary.
With reference to Fig. 4, show the structured flowchart of the switched system embodiment 1 of a kind of channels of network TV of the present invention, specifically can comprise as lower unit:
Handover request receiving element 401, for the handover request of receiving target channel;
Stream medium data broadcast unit 402, for when target channel pre-configured decoded information, downloads the stream medium data that target channel is corresponding, and is play according to decoded information by stream medium data;
Feature channel computing unit 403, for calculating the feature channel associated with target channel;
Decoded information dispensing unit 404, for the decoded information corresponding to feature channel assignment.
With reference to Fig. 5, show the structured flowchart of the switched system embodiment 2 of a kind of channels of network TV of the present invention, specifically can comprise as lower unit:
Handover request receiving element 501, for the handover request of receiving target channel;
Stream medium data broadcast unit 502, for when target channel pre-configured decoded information, downloads the stream medium data that target channel is corresponding, and is play according to decoded information by stream medium data;
In the embodiment of the present application, stream medium data broadcast unit 502 can comprise following subelement:
Connect and switch subelement 502a, for when handover request for target channel pre-configured decoded information time, the connection of display channel is switched to the decoder of correspondence;
In specific implementation, connect switching subelement 502a and can comprise as lower module further:
Connect and disconnect module, for when handover request for target channel pre-configured decoded information time, disconnection display channel and the connection of current decoder;
Connection establishment module, for setting up the connection of display channel and the pre-configured decoder of target channel.
Subelements 502b under second data, for downloading stream medium data corresponding to target channel;
In specific implementation, stream medium data can be Streaming Media fragment data, and handover request can comprise the burst number of Streaming Media fragment data, and under the second data, subelements 502b can comprise further as lower module:
Search module, for when handover request for target channel there is pre-configured decoded information time, search Streaming Media fragment data corresponding to target channel according to the burst in handover request number;
Download module, for downloading Streaming Media fragment data corresponding to target channel.
Decoding subelement 502c, for decoding stream medium data according to decoded information;
Play subelement 502d, play for the stream medium data of decoding is outputted to display channel.
Feature channel computing unit 503, for calculating the feature channel associated with target channel;
In a preferred embodiment of the present application, the handover request of target channel can comprise target channel value, and feature channel can be adjacent channel, and feature channel computing unit can comprise following subelement:
Adjacent channel computation subunit 503a, for calculating two adjacent channel values of target channel according to the target channel value of handover request.
Decoded information dispensing unit 504, for the decoded information corresponding to feature channel assignment.
In the embodiment of the present application, decoded information dispensing unit 504 can comprise following subelement:
Decoded information obtains subelement 504a, for obtaining the decoded information of feature channel;
Download module, for the index file that download features channel is corresponding;
Extraction module, for extracting the decoded information of feature channel in index file
Decoding firmware loads subelement 504b, for loading corresponding decoding firmware to decoder according to decoded information;
Decoder opens subelement 504c, for opening decoder.
In a preferred embodiment of the present application, stream medium data is Streaming Media fragment data, and index file can also comprise Streaming Media attribute and the connection of Streaming Media fragment data of feature channel, and decoded information dispensing unit 504 can also comprise following subelement:
Subelements 504d under first data, for when the Streaming Media attribute of feature channel is for some broadcasting flow-medium, connects according to Streaming Media fragment data and downloads fore flow media slicing data.
In a preferred embodiment of the present application, decoded information dispensing unit 504 can also comprise following subelement:
Initialisation identifications adds subelement 504e, for adding initialisation identifications to the feature channel configuring corresponding decoded information.
In a preferred embodiment of the present application, can also comprise as lower unit:
Whether decoded information judging unit 504-1, configured corresponding decoded information for judging characteristic channel; If not, then decoded information dispensing unit 504 is called.
In a preferred embodiment of the present application, can also comprise as lower unit:
Associated channel judging unit 505, for judging whether the channel of pre-configured decoded information is the feature channel associated with target channel; If so, stick unit 506 is then called; If not, then destruction unit 507 is called;
Stick unit 506, for retaining the decoded information of the channel of pre-configured decoded information;
Destroy unit 507, for destroying the decoded information of the channel of pre-configured decoded information.
For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art should understand, the embodiment of the embodiment of the present invention can be provided as method, device or computer program.Therefore, the embodiment of the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the embodiment of the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The embodiment of the present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, terminal equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminal equipment to produce a machine, making the instruction performed by the processor of computer or other programmable data processing terminal equipment produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing terminal equipment, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded on computer or other programmable data processing terminal equipment, make to perform sequence of operations step to produce computer implemented process on computer or other programmable terminal equipment, thus the instruction performed on computer or other programmable terminal equipment is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of embodiment of the present invention scope.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the terminal equipment comprising key element and also there is other identical element.
Above to the changing method of a kind of channels of network TV provided by the present invention and a kind of switched system of channels of network TV, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a changing method for channels of network TV, is characterized in that, comprising:
The handover request of receiving target channel;
When described target channel pre-configured decoded information, download the stream medium data that described target channel is corresponding, and described stream medium data is play according to described decoded information;
Calculate the feature channel associated with described target channel;
The decoded information corresponding to described feature channel assignment.
2. method according to claim 1, is characterized in that, the step of the described decoded information corresponding to described feature channel assignment comprises:
Obtain the decoded information of described feature channel;
Corresponding decoding firmware is loaded to decoder according to described decoded information;
Open described decoder.
3. method according to claim 1, is characterized in that, the described decoded information corresponding to described feature channel assignment also comprises:
Initialisation identifications is added to the described feature channel configuring corresponding decoded information.
4. method according to claim 1, is characterized in that, before the step of the described decoded information corresponding to described feature channel assignment, also comprises:
Judge whether described feature channel has configured corresponding decoded information;
If not, then the step of the described decoded information corresponding to described feature channel assignment is performed.
5. method according to claim 1, is characterized in that, also comprises:
Whether the channel judging pre-configured decoded information is the feature channel associated with described target channel;
If so, the decoded information of the channel of pre-configured decoded information described in then retaining;
If not, then destroy described in the decoded information of channel of pre-configured decoded information.
6. method according to claim 1, it is characterized in that, described when described handover request for target channel pre-configured decoded information time, download the stream medium data that described target channel is corresponding, and the step that described stream medium data carries out playing according to described decoded information comprised:
When described handover request for target channel pre-configured decoded information time, the connection of display channel is switched to corresponding decoder;
Download the stream medium data that described target channel is corresponding;
Described stream medium data is decoded according to described decoded information;
The described stream medium data of decoding is outputted to described display channel play.
7. method according to claim 6, it is characterized in that, described stream medium data is Streaming Media fragment data, and described handover request comprises the burst number of Streaming Media fragment data, and the sub-step of the stream medium data that the described target channel of described download is corresponding comprises further:
Streaming Media fragment data corresponding to described target channel is searched according to the burst in described handover request number;
Download the Streaming Media fragment data that described target channel is corresponding.
8. method according to claim 2, is characterized in that, the sub-step of the decoded information of the described feature channel of described acquisition comprises:
Download the index file that described feature channel is corresponding;
Extract the decoded information of feature channel described in described index file.
9. method according to claim 8, it is characterized in that, described stream medium data is Streaming Media fragment data, described index file also comprises Streaming Media attribute and the connection of Streaming Media fragment data of described feature channel, and the step of the described decoded information corresponding to described feature channel assignment also comprises:
When the Streaming Media attribute of described feature channel is for some broadcasting flow-medium, connects according to described Streaming Media fragment data and download fore flow media slicing data.
10. a switched system for channels of network TV, is characterized in that, comprising:
Handover request receiving element, for the handover request of receiving target channel;
Stream medium data broadcast unit, for exist when described target channel pre-configured decoded information time, download the stream medium data that described target channel is corresponding, and described stream medium data play according to described decoded information;
Feature channel computing unit, for calculating the feature channel associated with described target channel;
Decoded information dispensing unit, for the decoded information corresponding to described feature channel assignment.
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