CN104837056A - Method and device for switching network television programs, and television system - Google Patents

Method and device for switching network television programs, and television system Download PDF

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Publication number
CN104837056A
CN104837056A CN201410046920.7A CN201410046920A CN104837056A CN 104837056 A CN104837056 A CN 104837056A CN 201410046920 A CN201410046920 A CN 201410046920A CN 104837056 A CN104837056 A CN 104837056A
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CN
China
Prior art keywords
program
described
pre
play
actual program
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CN201410046920.7A
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Chinese (zh)
Inventor
岳宗鹤
程菲
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中兴通讯股份有限公司
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Priority to CN201410046920.7A priority Critical patent/CN104837056A/en
Publication of CN104837056A publication Critical patent/CN104837056A/en

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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]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4383Accessing a communication channel, e.g. channel tuning
    • H04N21/4384Accessing a communication channel, e.g. channel tuning involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
    • 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
    • H04N21/21Server components or server architectures
    • H04N21/218Source of audio or video content, e.g. local disk arrays
    • H04N21/2187Live feed
    • 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
    • H04N21/24Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • 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
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331Caching operations, e.g. of an advertisement for later insertion during playback
    • 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
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/442Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213Monitoring of end-user related data
    • H04N21/44222Monitoring of user selections, e.g. selection of programs, purchase activity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61Network physical structure; Signal processing
    • H04N21/6106Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643Communication protocols
    • H04N21/64322IP

Abstract

The invention provides a method and device for switching network television programs, and a television system. The method comprises: according to a current broadcast program, pre-loading a program relative to the current program and storing the relative program to a cache; when broadcasting of the current program is finished, judging whether a to-be-broadcast program is the relative program; and if the to-be-broadcast program is the relative program, broadcasting the relative program.

Description

A kind of network TV program changing method, device and television system

Technical field

The present invention relates to Web TV application, particularly relate to a kind of network TV program changing method, device and television system.

Background technology

Current Web TV concept is very fiery, and each large television manufacturer, Set Top Box manufacturer, IPTV manufacturer and Internet firm are all actively releasing the Web TV product of oneself.Traditional tv compared by Web TV, advantage is obvious especially: Web TV can be play from webserver program downloading video by broadband network, this user is broken away from TV station plays the situation what program what program can only see, user can want the program seen by unrestricted choice oneself.

But the deficiency of Web TV self is also obvious, time due to Web TV switching program or video, all will re-start connection, this causes the buffer time of switching long, has had a strong impact on Consumer's Experience.

Summary of the invention

The present invention proposes under this background, in order to solve the problem that buffer time is long when Web TV switches program or video, proposes a kind of network TV program changing method, device and television system herein.

The invention provides a kind of network TV program changing method, described method comprises: according to the actual program play, and the correlating programs of actual program described in pre-download is also saved to buffer memory; After described actual program finishes, judge whether program to be broadcast is described correlating programs; If judge, described program to be broadcast is described correlating programs, plays described correlating programs.

Further, if judge, described program to be broadcast is not described correlating programs, play described correlating programs until successful switch to described in program to be broadcast.

Concrete, the described actual program according to playing, the correlating programs of actual program described in pre-download is also saved to buffer memory and comprises: if judge, the actual program play is video frequency request program, then download the next video frequency program of this program series and be saved to buffer memory; If judge, the actual program play is real time television channel program, then download the upper channel of the channel of current broadcasting and/or channel program corresponding to next channel and be saved to buffer memory.

Further, the correlating programs of described download actual program before being saved to buffer memory, described method also comprises: the broadband service condition detecting the actual program play, and judges whether the broadband of broadcasting actual program meets pre-conditioned; When the broadband judging to play actual program meets pre-conditioned, notify that described pre-download module is according to the actual program play, and downloads the correlating programs of actual program.

Further, the described broadband service condition detecting the actual program play, judges whether the broadband of playing actual program meets pre-conditioned comprising: the downloading rate V1 and the maximum admissible rate V2 of current network that obtain current playing program needs; The downloading rate V1 need current playing program and the ratio of the maximum admissible rate V2 of current network are as current network utilization rate m; According to the comparative result of current network utilization rate m with the Web vector graphic threshold value preset, judge whether current network bandwidth meets pre-conditioned.

Further, whether the broadband of described broadcasting actual program meets pre-conditioned comprising: current network utilization rate m is less than default Web vector graphic threshold value, judges that the broadband of described broadcasting actual program meets pre-conditioned.

The present invention also discloses a kind of network TV program switching device shifter, and described device comprises pre-download module, determination module and control module, and described pre-download module is used for the actual program according to playing, and the correlating programs of pre-download actual program is also saved to buffer memory; Described determination module is used for after described actual program finishes, and judges whether program to be broadcast is described correlating programs; Described control module is used for, when judging that described program to be broadcast is correlating programs, controlling correlating programs described in player plays.

Further, described control module also for judge described program to be broadcast be not correlating programs time, then play described correlating programs until successful switch to described in program to be broadcast.

Concrete, if described pre-download module is used for judging that the actual program play is video frequency request program, then downloads the next video frequency program of this program series and be saved to buffer memory; If judge, the actual program play is real time television channel program, then download the upper channel of the channel of current broadcasting and/or channel program corresponding to next channel and be saved to buffer memory.

Further, described device also comprises detection module, for to download and before data buffering bag described in the data buffering bag storing program to be broadcast, detect the broadband service condition of the actual program play, judge whether the broadband of playing actual program meets pre-conditioned, judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program.

Further, described detection module comprises acquisition submodule, calculating sub module, judgement submodule and notice submodule, and described acquisition submodule is for obtaining downloading rate V1 and the maximum admissible rate V2 of current network of current playing program needs; Described calculating sub module is used for the ratio of downloading rate V1 and the maximum admissible rate V2 of current network current playing program needed as current network utilization rate m; Described judgement submodule is used for the comparative result according to current network utilization rate m and default Web vector graphic threshold value, judges whether current network bandwidth meets pre-conditioned; Described notice submodule be used for judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program.

Further, described judgement submodule is specifically for being less than default Web vector graphic threshold value during at current network utilization rate m, judge that current network bandwidth meets pre-conditioned.

The present invention also discloses a kind of terminal for playing network television, and described terminal comprises said apparatus.

The present invention also discloses a kind of network television system, and described television system comprises said apparatus.

Embodiments provide a kind of network TV program changing method, after judging the correlating programs of actual program, buffer memory put into by the Streaming Media bag of the correlating programs of pre-download actual program, and can play-over when switching program, solves the problem that buffer time is long when Web TV switches.

Accompanying drawing explanation

Fig. 1 is the inventive method embodiment basic flow sheet;

Fig. 2 is a kind of embodiment of the method flow chart of the present invention;

Fig. 3 is other method embodiment flow chart of the present invention;

Fig. 4 apparatus of the present invention example structure schematic diagram.

Embodiment

The invention solves Web TV has buffer time length problem when program switches, judge which program is the correlating programs of actual program according to the actual program play and user habit, time user watches program, the Streaming Media bag of correlating programs is also downloaded on backstage.

For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.

Fig. 1 is the inventive method embodiment basic flow sheet, and method as shown in Figure 1, comprises the following steps,

Step S11: terminal is according to the actual program play, and the correlating programs of actual program described in pre-download is also saved to buffer memory;

This is equivalent to terminal and connects simultaneously, downloads multiple TV programme, only plays current this program chosen of user, and correlating programs, as subsequent use, only downloaded and do not play.

Actual program is real-time television channel program or video frequency request program, if actual program is real time television channel program, and the channel play is N, then correlating programs is exactly program corresponding to channel N-1 and/or channel N+1, such as user receives channel 4, and correlating programs is exactly channel 3 and/or channel 5.

If actual program is video frequency request program, then correlating programs is the next video frequency program of this program series, and the program that such as user watches is that in video request program storehouse, certain TV play the 4th collects, and correlating programs is exactly that this TV play the 5th collects.

Step S12: after described actual program finishes, judges whether program to be broadcast is described correlating programs;

Step S13: described program to be broadcast is described correlating programs if judge, plays described correlating programs.

Embodiment of the method one

Fig. 2 is a kind of embodiment of the method flow chart of the present invention, and method as shown in Figure 2, comprises the following steps:

Step 201: link block and network video server carry out authentication, set up data cube computation;

The process that link block sets up data cube computation is relevant with video server, and video server is different, and corresponding data cube computation process of setting up is not identical yet, and the present embodiment does detailed elaboration to set up the program switching of TCP connection to Web TV.Be specially, connected by TCP, then send authentication information (user name password etc.) and carry out certification, then ask concrete video program play.

Step 202: user selects instantaneous channel as actual program;

User selects the program watched by the options button that remote controller or this television body carry, user selected channel N in this embodiment.

Step 203: after playing module receives play instruction, plays actual program;

Step 204: the first buffer module buffering actual program, and store buffer resource;

Step 205: the first determination module judges whether contemporary broadband situation meets pre-download condition;

When contemporary broadband situation meets pre-download condition, skip to step 206, when contemporary broadband situation does not meet pre-download condition, skip to step 204.

In the present embodiment, judge whether contemporary broadband situation meets pre-download condition and be specially:

First obtain the downloading rate V1 that current play channel N needs, then obtain the maximum admissible rate V2 of current network, using the ratio of V1 and V2 as current network utilization rate m;

Then current network utilization rate m and default network usage threshold values M is compared, if m is less than M, is then judged to be that current network bandwidth also has more than needed, now carries out other programs and download the normal play that can not have influence on program N, then jump to step 7.If m is not less than M, be judged to be that network takies more saturated, can not other programs be being downloaded.

If the network bandwidth is 10Mbps, plays current television program and only used 0.5Mbps, this illustrates that network usage m is 0.5/10=5%, and the network bandwidth also has more than needed, now downloads the normal play that other TV programme can not affect actual program.

If the network bandwidth is 1Mbps, play current television program and only used 0.7Mbps, this illustrates that network usage m is 0.7/1=70%, the network bandwidth is close to saturated, now downloading other TV programme causes actual program card to pause possibly, is now just not suitable for carrying out backstage again and downloads other TV programme.

The setting of network usage threshold value is to ensure that all download link speed sums can not arrive network total bandwidth, otherwise these downloads may interact.Such as allow at most to carry out 4 downloads, so each download link speed can not more than 25%, then can setting network utilization rate threshold value be 25%, like this by arranging network usage threshold value to ensure the smooth playing of actual program simultaneously.

Step 206: pre-download module is in link block after backstage connects the correlating programs of actual program, and buffer memory put into by the Streaming Media bag of the correlating programs of pre-download actual program;

Judge that the method for the correlating programs of channel N includes but not limited to:

If what user watched is real time television channel program, correlating programs is exactly channel N-1 and channel N+1, the actual program channel N that such as user selects is channel 4, then correlating programs is defaulted as channel 3 and channel 5, also can according to User Defined correlating programs.

Step 207: user selects to switch program;

Step 208: the second determination module judges that program to be broadcast is correlating programs;

Step 209: read module reads the Streaming Media bag of correlating programs from buffer memory;

Step 210: the 3rd determination module judges that whether the Streaming Media bag of buffer memory is expired;

If but the Streaming Media bag time that there is channel N is expired, step 211, if exist program N Streaming Media bag and be current time can, then jump to step 12.

Judging in the present embodiment that whether the Streaming Media bag of buffer memory is expired is:

The data that Streaming Media constantly reads when playing in the Streaming Media bag in buffer memory are play, and after playing, these data are just removed immediately, and new data will be deposited in buffer memory.The Streaming Media bag of the program of current broadcasting, plays just deleted.The Streaming Media bag of correlating programs, stores in the buffer, can not be played, but do not retained always yet, an expired time is set in the present embodiment, such as 3 seconds, Streaming Media bag before 3 seconds all can be deleted, so just means that buffer memory only retains the program data of nearest 3 seconds.

This step is to make buffer memory not be filled Streaming Media bag, and is in upstate always, also assures that the real-time of channel program.

Step 211: the Streaming Media bag of removing module Delete Expired, jumps to step 212;

Main control module connects the server of program N by network connecting module, and buffer memory put into by the Streaming Media bag of program downloading N.

Step 212: playing module plays the program of buffer memory.

Streaming Media data constantly read in buffer memory when playing are play, and after playing, these data are just removed immediately, and new data will be deposited in buffer memory.

Step 213: skip to step 204;

Step 214: flow process terminates.

Embodiment of the method two

Fig. 3 is another embodiment of the method flow chart of the present invention, and method as shown in Figure 3, comprises the following steps:

Step 301: link block and network video server carry out authentication, set up data cube computation.

Web TV carries out authentication by HTTP and network video server, sets up data cube computation.

Step 302: user selects to watch that program 1 is as actual program;

In the present embodiment, user selects the program 1 watched to be video frequency request program, and TV play is all deposited according to a certain order in server database.

Step 303: buffer memory put into by the Streaming Media bag of download module program downloading 1;

Time the Streaming Media downloaded arrives some, start to play this part content downloaded.While playing, buffer memory put into by the Streaming Media bag continuing to download back.

Step 304: the correlating programs of control module determination actual program;

In the present embodiment, the correlating programs of actual program is defaulted as the next program of this program series.The program that such as user watches is that in video request program storehouse, certain TV play the 4th collects, and correlating programs is exactly that this TV play the 5th collects, if last one set, then exits this flow process;

In addition, correlating programs can be realized by User Defined, and it is one section of MV video or one section of dynamic picture of making laughs easily that such as user can arrange correlating programs.

Step 305: determination module judges whether contemporary broadband situation meets pre-download condition;

Determination module, when determination module judges that contemporary broadband situation meets pre-download condition, skips to step 306, judges that contemporary broadband situation does not meet pre-download condition, skip to step 303 at determination module.

Wherein, the same embodiment of determination methods whether contemporary broadband has more than needed, does not repeat them here.

Step 306: the Streaming Media bag of the correlating programs of pre-download module program downloading 1, and the Streaming Media bag of correlating programs is stored into buffer memory;

If correlating programs is acquiescence, then directly directly to download in this TV play storehouse, if correlating programs is User Defined, then link block needs the database being connected to correlating programs place on backstage, and downloads correlating programs.

Step 307: user selects the correlating programs watching program 1;

The correlating programs of program 1 is designated as program 2, and first Web TV checks the Streaming Media bag that whether there is program 2 in buffer memory.If existed, play-over program 2; If there is no, Web TV connects the server of program 2, and buffer memory put into by the Streaming Media bag of program downloading 2, time the Streaming Media of download arrives some, starts to play this part content downloaded.While playing, buffer memory put into by the Streaming Media bag continuing to download back.

Step 308: playing module reads the Streaming Media bag downloaded from buffer memory, play-overs.

Step 309: flow process terminates.

In above-mentioned two embodiments of the method, correlating programs can also draw according to user watched custom, and utilizes the network bandwidth more than needed to download the Streaming Media bag of correlating programs.Specifically comprise: if user frequently switches between two channels, then television system remembers this two channels, when actual program is one of them channel, then the next channel of current channel or a upper channel are then replaced with another channel in these two channels by the correlating programs of actual program.

Fig. 4 is apparatus of the present invention example structure schematic diagram, and device as shown in Figure 4 comprises pre-download module 41, determination module 42 and control module 43, wherein,

Pre-download module 41 is for according to the actual program play, and the correlating programs of pre-download actual program is also saved to buffer memory; In this embodiment, if pre-download module 41 is specifically for judging that the actual program play is video frequency request program, then downloads the next video frequency program of this program series and be saved to buffer memory;

If judge, the actual program play is real time television channel program, then download the upper channel of the channel of current broadcasting and/or channel program corresponding to next channel and be saved to buffer memory.

Determination module 42, for after described actual program finishes, judges whether program to be broadcast is described correlating programs; Control module 43, for when judging that described program to be broadcast is correlating programs, controls correlating programs described in player plays.

Control module 43 also for judge described program to be broadcast be not correlating programs time, then play described correlating programs until successful switch to described in program to be broadcast.

This device also comprises detection module 44, detection module 44 is for download and before data buffering bag described in the data buffering bag storing program to be broadcast, detect the broadband service condition of the actual program play, judge whether the broadband of playing actual program meets pre-conditioned, judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program, in this embodiment, detection module 44 comprises acquisition submodule 431, calculating sub module 432, judge submodule 433 and notice submodule 434, wherein,

Obtain submodule 431, for obtaining downloading rate V1 and the maximum admissible rate V2 of current network of current playing program needs;

Calculating sub module 432, for the ratio of the downloading rate V1 that current playing program needed and the maximum admissible rate V2 of current network as current network utilization rate m; Judge submodule 433, for the comparative result according to current network utilization rate m and default Web vector graphic threshold value, judge whether current network bandwidth meets pre-conditioned;

Concrete, described judgement submodule is specifically for being less than default Web vector graphic threshold value during at current network utilization rate m, judge that current network bandwidth meets pre-conditioned;

Notice submodule 434, for judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program.

For a terminal for playing network television, comprise device as shown in Figure 4.

A kind of television system, comprises device as shown in Figure 4.

The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

These are only the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.

Claims (14)

1. a network TV program changing method, is characterized in that, said method comprising the steps of:
According to the actual program play, the correlating programs of actual program described in pre-download is also saved to buffer memory;
After described actual program finishes, judge whether program to be broadcast is described correlating programs;
If judge, described program to be broadcast is described correlating programs, plays described correlating programs.
2. the method for claim 1, is characterized in that described method also comprises:
If judge, described program to be broadcast is not described correlating programs, play described correlating programs until successful switch to described in program to be broadcast.
3. the method for claim 1, is characterized in that the described actual program according to playing, and the correlating programs of actual program described in pre-download is also saved to buffer memory and comprises:
If judge, the actual program play is video frequency request program, then download the next video frequency program of this program series and be saved to buffer memory;
If judge, the actual program play is real time television channel program, then download the upper channel of the channel of current broadcasting and/or channel program corresponding to next channel and be saved to buffer memory.
4. the method as described in any one of claims 1 to 3, is characterized in that: the correlating programs of described download actual program before being saved to buffer memory, described method also comprises:
Detect the broadband service condition of the actual program play, judge whether the broadband of playing actual program meets pre-conditioned; When the broadband judging to play actual program meets pre-conditioned, notify that described pre-download module is according to the actual program play, and downloads the correlating programs of actual program.
5. method as claimed in claim 5, is characterized in that, the described broadband service condition detecting the actual program play, and judges whether the broadband of playing actual program meets pre-conditioned comprising:
Obtain downloading rate V1 and the maximum admissible rate V2 of current network of current playing program needs;
The downloading rate V1 need current playing program and the ratio of the maximum admissible rate V2 of current network are as current network utilization rate m;
According to the comparative result of current network utilization rate m with the Web vector graphic threshold value preset, judge whether current network bandwidth meets pre-conditioned.
6. method as claimed in claim 5, it is characterized in that, whether the broadband of described broadcasting actual program meets pre-conditioned comprising: current network utilization rate m is less than default Web vector graphic threshold value, judges that the broadband of described broadcasting actual program meets pre-conditioned.
7. a network TV program switching device shifter, is characterized in that, described device comprises:
Pre-download module: for according to the actual program play, the correlating programs of pre-download actual program is also saved to buffer memory;
Determination module: for after described actual program finishes, judges whether program to be broadcast is described correlating programs;
Control module: for when judging that described program to be broadcast is correlating programs, control correlating programs described in player plays.
8. device as claimed in claim 7, it is characterized in that described control module also for:
Judge described program to be broadcast be not correlating programs time, then play described correlating programs until successful switch to described in program to be broadcast.
9. device as claimed in claim 7, it is characterized in that described pre-download module specifically for:
If judge, the actual program play is video frequency request program, then download the next video frequency program of this program series and be saved to buffer memory;
If judge, the actual program play is real time television channel program, then download the upper channel of the channel of current broadcasting and/or channel program corresponding to next channel and be saved to buffer memory.
10. the device as described in any one of claim 7 to 9, it is characterized in that: described device also comprises detection module, for to download and before data buffering bag described in the data buffering bag storing program to be broadcast, detect the broadband service condition of the actual program play, judge whether the broadband of playing actual program meets pre-conditioned, judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program.
11. devices as claimed in claim 10, it is characterized in that, described detection module comprises:
Obtain submodule, for obtaining downloading rate V1 and the maximum admissible rate V2 of current network of current playing program needs;
Calculating sub module, for the ratio of the downloading rate V1 that current playing program needed and the maximum admissible rate V2 of current network as current network utilization rate m;
Judge submodule, for the comparative result according to current network utilization rate m and default Web vector graphic threshold value, judge whether current network bandwidth meets pre-conditioned;
Notice submodule, for judge to play the broadband of actual program meet pre-pre-conditioned time, notify that described pre-download module is according to the actual program play, the correlating programs of pre-download actual program.
12. devices as claimed in claim 11, is characterized in that, described judgement submodule is specifically for being less than default Web vector graphic threshold value during at current network utilization rate m, judge that current network bandwidth meets pre-conditioned.
13. 1 kinds, for the terminal of playing network television, is characterized in that, described terminal comprises the device described in any one of claim 7 to 12.
14. 1 kinds of network television systems, is characterized in that, described system comprises the device described in any one of claim 7 to 12.
CN201410046920.7A 2014-02-10 2014-02-10 Method and device for switching network television programs, and television system CN104837056A (en)

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Application Number Priority Date Filing Date Title
CN201410046920.7A CN104837056A (en) 2014-02-10 2014-02-10 Method and device for switching network television programs, and television system

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