CN102547377A - Method and device for transmitting video data to Set-top box - Google Patents
Method and device for transmitting video data to Set-top box Download PDFInfo
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Abstract
The invention discloses a method and a device for transmitting video data to a Set-top box. The method comprises the following steps: performing real-time code conversion to non-standard clear format programs, so as to convert the code to a video code stream of uniform standard clear format supported by the Set-top box; multiplexing the vide code stream of at least two programs subjected to code conversion as a video preview code stream; and modulating the obtained preview code stream to a frequency point different from a main video code stream to be pushed to the Set-top box. By adopting the method of the invention, previewing other programs while watching a current program can be realized, and the cost is relatively low.
Description
Technical field
The present invention relates to a kind of DTV STB field, particularly relate to a kind of method and device thereof that sends video data to STB.
Background technology
The most frequent operation is exactly to cut platform and channel selection in the process that televiews, and electronic program menu system also is for the channel selection demand that satisfies the user designs, and is pure words programme tabulation or the literal programme single program video preview of tabulating basically.The program of when channel selection is operated, watching can be replaced by new program, but in actual conditions, the user possibly not want that interrupting current program watches, but thinks other interested of preview.That is, can't when watching current program, carry out preview, therefore can't judge whether really to cut the platform operation other program.
Present digital program film source all is that the SD form is not only arranged, and also has high definition and 3D form, also has the code stream of other video format in the future.Format video such as high definition and 3D stream is very high to the requirement of decoder, and general chip is supported one tunnel high definition or 3D decoding functions at most, realize multichannel and separate high definition simultaneously or the cost of 3D video flowing too high; The code check of high definition or 3D video frequency program is all very high in addition; The modulation system frequency of a QAM64 generally is merely able to transmit two programs; Therefore receive two-way high definition or 3D program at most simultaneously for the middle-end equipment that has only a tuner, therefore can't realize the possibility of a plurality of programs of preview simultaneously.Certainly adopted many tuners technology, but the hardware cost that brings like this is very high, also still can't be real be implemented in watch programs the time to other any program carry out preview maybe.
Therefore, need a kind of method and device thereof to STB transmission video data be provided, effectively solve the problem of above-mentioned existence for the user.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of method and device thereof to STB transmission video data, can in watch programs, carry out preview to other any program, and cost is lower.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of method of sending video data to STB is provided, comprises: non-SD format section order is carried out real-time transcoding, change into the video code flow of the unified SD form of STB support; Video code flow behind at least two program transcodings is multiplexed with the video preview code stream; The preview video code stream that obtains is modulated on the frequency different with main video code flow pushes to STB.
Wherein, the preview video code stream before the step that STB pushes, being comprised: to all preview video code streams that is converted to, carry out resolution compression, reduce the size of resolution, be reduced to 1/2,1/4 or 1/8 of former video.
Wherein, the preview video code stream comprises: all preview video code streams are taken out frame handle, only extract I frame or the generation of extraction part I frame regularly preview video code stream.
Wherein, In the time of step that the preview video code stream is pushed to STB, comprising: in main video code flow and/or preview video code stream, put the contingency table between the corresponding main video code flow of program with the main broadcaster to the corresponding preview video code stream of STB broadcast preview program.
For solving the problems of the technologies described above; Another technical scheme that the present invention adopts is: a kind of method of carrying out playing programs based on STB is provided; Comprise: realize that through adopting all band numeral tuner single tuner receives a plurality of frequency code streams simultaneously; Wherein first frequency receives main video code flow, with said main video code flow decoding and in main window, carry out normal play; The video preview of selecting to comprise frequency point information and previewing program information according to user's needs instructs, and controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing; The video data that said previewing program is corresponding is decoded, the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.
Comprise after the step of the video data that the previewing program that wherein, broadcast decoder obtains in the preview window simultaneously is corresponding: receive the instruction of the playblast program that comprises selected previewing program information; In the contingency table between previewing program and main video code flow, find the pairing main video flowing program information corresponding of corresponding said selected previewing program video code flow, and the platform instruction is cut in generation; Instruct according to the said platform of cutting, control the frequency that the corresponding tuner of main video window switches to the fixed main video place of main separation, main video window is play main video.
For solving the problems of the technologies described above; Another technical scheme that the present invention adopts is: a kind of device that sends video data to STB is provided; Comprise: the transcoding module, be used for non-SD format section order is carried out real-time transcoding, change into the video code flow of the unified SD form of STB support; Multiplexing module is used for the video code flow behind at least two program transcodings is multiplexed with the video preview code stream; Push module, be used for the preview video code stream that obtains is modulated on the frequency different with main video code flow and push to STB.
Wherein, said device also comprises: compression module, be used for preview video code stream that all are converted to, and carry out resolution compression, reduce the size of resolution, be reduced to 1/2,1/4 or 1/8 of former video; Take out frame module, be used for that all preview video code streams are taken out frame and handle, only extract I frame or the generation of extraction part I frame regularly preview video code stream; Broadcast module is used for putting contingency table program corresponding main video code flow between to the corresponding preview video code stream of STB broadcast preview program with the main broadcaster at main video code flow and/or preview video code stream.
For solving the problems of the technologies described above; Another technical scheme that the present invention adopts is: a kind of device that carries out playing programs based on STB is provided; Comprise: the code stream receiver module; Comprise all band numeral tuner, be used for receiving main video code flow and preview video code stream respectively through first frequency and second frequency of tuner; Main video display module is used for carrying out normal play with said main video code flow decoding and at main window; The preview video processing module is used for instructing according to the video preview that user's needs are selected to comprise frequency point information and previewing program information, controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing; The decodes and plays module is used for the video data that said previewing program is corresponding and decodes the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.
The invention has the beneficial effects as follows: the situation that is different from prior art; The present invention is through with non-SD format section order transcoding, changes into the video code flow of the SD form that STB supports, the preview video code stream of transcoding is modulated to and pushes to STB on the frequency different with main video code flow again; In this way; STB can be realized the user when watching current program after having received the main video code flow signal that comprises the preview video code stream, carries out the preview of other program simultaneously; And the preview video code stream is the SD form, can need not to adopt a plurality of tuners with corresponding different respectively preview video code streams, so cost is lower, realizes easily and is accepted by market.
Description of drawings
Fig. 1 is the flow chart of the present invention to an embodiment of the method for STB transmission video data;
Fig. 2 the present invention is based on the flow chart of an embodiment that STB carries out the method for playing programs;
Fig. 3 the present invention is based on the flow chart of another embodiment that STB carries out the method for playing programs;
Fig. 4 is the flow chart of the present invention to a terminal implementation of the method for STB transmission video data;
Fig. 5 is the flow chart of the present invention to another terminal implementation of the method for STB transmission video data;
But Fig. 6 is the application sketch map of the present invention's 1 program of preview when STB sends the method for video data;
But Fig. 7 is the application sketch map of the present invention's 4 programs of preview when STB sends the method for video data;
Fig. 8 is the structural representation of the present invention to an embodiment of the device of STB transmission video data;
Fig. 9 the present invention is based on the structural representation of an embodiment that STB carries out the device of playing programs;
Figure 10 the present invention is based on the structural representation of another embodiment that STB carries out the device of playing programs.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Fig. 1 is the flow chart of the present invention to an embodiment of the method for STB transmission video data, and as shown in Figure 1, said method comprises the steps:
Step 101: non-SD format section order is carried out real-time transcoding, change into the video code flow of the unified SD form of STB support.Said non-SD form mainly is meant high definition, 3D or other form; So-called SD form; Be a kind of video format of physical resolution below 720p, 720p is meant that the vertical resolution of video is that 720 lines are lined by line scan, specifically; Be meant " SD " video formats such as the VCD of resolution about 400 lines, DVD, TV programme, i.e. single-definition.
Step 102: the video code flow behind at least two program transcodings is multiplexed with the video preview code stream.So-called multiplexing, be a kind of with several signals independent of each other, merge into the method for the composite signal that can on same channel, transmit simultaneously.Such as; The frequency spectrum of the voice signal of transmission generally in 300～3400Hz, can arrive different frequency ranges to their spectrum modulation in same channel in order to make several sort signals; Combine and unlikely influencing each other, and can come in that receiving terminal is separated from one another.
Step 103: the preview video code stream that obtains is modulated on the frequency different with main video code flow pushes to STB.Said main video code flow is meant the bit stream data of the current program of watching, said preview video code stream is meant the bit stream data of the program of institute's preview.
Wherein, the preview video code stream before the step that STB pushes, being comprised: to all preview video code streams that is converted to, carry out resolution compression, reduce the size of resolution, be reduced to 1/2,1/4 or 1/8 of former video.
The target of video compression is under the prerequisite that guarantees visual effect, to reduce video data rate as far as possible, is divided in the frame compressing with interframe, and (Intraframe) compression is also referred to as space compression (Spatial compression) in the frame.When compression during one two field picture, only consider the data of this frame and do not consider the redundant information between the consecutive frame that this is in fact similar with the still image compression.The general lossy compression method algorithm that adopts in the frame does not have correlation between each frame during owing to the interior compression of frame, so the video data after the compression still can be that unit edits with the frame.Compression does not generally reach very high compression in the frame.Continuous front and back two frames that adopt interframe (Interframe) compression to be based on many videos or animation have very big correlation, and front and back two frame informations change very little in other words.Also be to have redundant information between its consecutive frame of continuous video, according to this characteristic, the amount of redundancy between the compression consecutive frame just can further improve decrement, reduces compression ratio.The interframe compression is also referred to as time compression (Temporal compression), and it compresses through the data between the different frame on the comparison time shaft.The interframe compression generally can't harm.Frame difference (Frame differencing) algorithm is a kind of typical time compression method, and it is through comparing the difference between this frame and the consecutive frame, and only the minute book frame is adjacent the difference of frame, can significantly reduce data volume like this.
Wherein, the preview video code stream comprises: all preview video code streams are taken out frame handle, only extract I frame or the generation of extraction part I frame regularly preview video code stream.Can further reduce single preview video after handling like this and flow shared bandwidth.
Wherein, In the time of step that the preview video code stream is pushed to STB, comprising: in main video code flow and/or preview video code stream, put the contingency table between the corresponding main video code flow of program with the main broadcaster to the corresponding preview video code stream of STB broadcast preview program.
Fig. 2 the present invention is based on the flow chart of an embodiment that STB carries out the method for playing programs, and as shown in Figure 2, said method comprises the steps:
Step 201: realize that through adopting all band numeral tuner single tuner receives a plurality of frequency code streams simultaneously, wherein first frequency receives main video code flow, with said main video code flow decoding and in main window, carry out normal play.Said main video code flow is meant the bit stream data of the current program of watching; Said main window is meant the window of the current program of watching, said normal play is meant current program normal play of watching; Said preview video code stream is meant the bit stream data of the program of institute's preview.
Step 202: the video preview of selecting to comprise frequency point information and previewing program information according to user's needs instructs, and controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing.When the user launches the previewing programs function; Find pairing frequency point information of required previewing program and programme information, this frequency of control tuner locking, output transport stream data; The bag identifier (PID) of required audio frequency and video is set, and control data distributor demultiplexing obtains the video data of previewing program.
Step 203: the video data that said previewing program is corresponding is decoded, the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.Said the preview window is meant the window of previewing program, mixes with said main window, does not influence the normal play of main window.The video data that said previewing program is corresponding is input to the SD decoder, and decoding obtains the video data that can directly show, according to electric program menu (EPG) or user interface (UI) The Window Design, and the size and the position of adjustment display video window.
Wherein, also comprise the steps after the step of the video data that the previewing program that broadcast decoder obtains in the preview window simultaneously is corresponding, as shown in Figure 3:
Step 301: receive the instruction of the playblast program that comprises selected previewing program information;
Step 302: in the contingency table between previewing program and main video code flow, find the corresponding said selected pairing main video code flow program information corresponding of previewing program video code flow, and the platform instruction is cut in generation;
Step 303: instruct according to the said platform of cutting, control the frequency that the corresponding tuner of main video window switches to the fixed main video place of main separation, main video window is play main video.
Fig. 4 is the flow chart of the present invention to a terminal implementation of the method for STB transmission video data, and the bit stream data that data distributor 1 receives main video flowing is set, and corresponding main decoder is high definition or 3D decoder; Data distributor 2 receives the bit stream data of preview video stream, and corresponding auxilliary decoder is the SD decoder; As shown in Figure 4, comprising:
Step 401: radio frequency (the RF-Radio Frequency Signal) signal that output is imported;
Step 402: the main video code flow of all band numeral tuner (Full-Band tuner) receiving step 401 outputs, and the main video codeword data stream of output transport stream 1 (TS1);
Step 403: the preview video code stream of modulation tuner (DEMOD-8QAM) receiving step 401 outputs of many quadrature amplitude modulations, and the preview video bit stream data of output transport stream 2 (TS2);
Step 404: the main video codeword data stream of the MPTS 1 (TS1) of data distributor 1 (DMUX1) receiving step 402 outputs, and output main video data;
Step 405: the preview video bit stream data of the MPTS 2 (TS2) of data distributor 2 (DMUX2) receiving step 403 outputs, and export the corresponding video data of previewing program that demultiplexing obtains;
The data of step 406:3D/ high definition decoder (3D/ high definition DECODE) receiving step 404 outputs, and the corresponding program of the main video of decoding output;
Step 407: the data of SD decoder (SD DECODE) receiving step 405 outputs, and the corresponding data of decoding output preview video;
Step 408: the instruction that the output remote control receives;
Step 409: the instruction of user interface receiving step 408, and output order;
Step 410: the data of receiving step 407 outputs, carry out format conversion and output;
Step 411: the data and the instruction of receiving step 406,407,409 and 410 outputs, carry out the figure layer and mix, and output order;
Step 412: the instruction of receiving step 411, export to television set through the AVOUT interface.
Fig. 5 is the flow chart of the present invention to another terminal implementation of the method for STB transmission video data, and the bit stream data that data distributor 1 receives main video flowing is set, and corresponding main decoder is high definition or 3D decoder; Data distributor 2 receives the bit stream data of preview video stream, and corresponding auxilliary decoder is the SD decoder; As shown in Figure 5 and Fig. 4 difference is: in step 501 and step 502 is that first frequency and second frequency through a tuner receives main video code flow and preview video code stream respectively, and exports corresponding data, the same Fig. 4 of other step.
But Fig. 6 is the application sketch map of the present invention's 1 program of preview when STB sends the method for video data; The upper right side of the main window of watching at current program is the preview window of 1 previewing programs; Certainly; According to the hobby of different user, can the position of the preview window be placed customer satisfaction system place on the main window.
But Fig. 7 is the application sketch map of the present invention's 4 programs of preview when STB sends the method for video data.It below main window that current program is watched the preview window of 4 previewing programs being arranged side by side; Certainly; According to the hobby of different user, can the position of the preview window be placed customer satisfaction system place on the main window, simultaneously according to actual conditions; The quantity that the user can increase and decrease the preview window reaches when watching current program, better other program of preview.
Be different from the situation of prior art; The present invention is through with non-SD format section order transcoding, changes into the video code flow of the SD form that STB supports, the preview video code stream of transcoding is modulated to and pushes to STB on the frequency different with main video code flow again; In this way; STB can be realized the user when watching current program after having received the main video code flow signal that comprises the preview video code stream, carries out the preview of other program simultaneously; And the preview video code stream is the SD form, can need not to adopt a plurality of tuners with corresponding different respectively preview video code streams, so cost is lower, realizes easily and is accepted by market.
Fig. 8 is the structural representation of the present invention to an embodiment of the device of STB transmission video data, and as shown in Figure 8, this device comprises: transcoding module 801, Multiplexing module 802 and propelling movement module 803.
Multiplexing module 802 is used for the video code flow behind at least two program transcodings is multiplexed with the video preview code stream.So-called multiplexing, be a kind of with several signals independent of each other, merge into the method for the composite signal that can on same channel, transmit simultaneously.Such as; The frequency spectrum of the voice signal of transmission generally in 300～3400Hz, can arrive different frequency ranges to their spectrum modulation in same channel in order to make several sort signals; Combine and unlikely influencing each other, and can come in that receiving terminal is separated from one another.
Pushing module 803 is used for the preview video code stream that obtains is modulated on the frequency different with main video code flow and pushes to STB.Said main video code flow is meant the bit stream data of the current program of watching, said preview video code stream is meant the bit stream data of the program of institute's preview.
Wherein, this device also comprises compression module, is used for preview video code stream that all are converted to, carries out resolution compression, reduces the size of resolution, is reduced to 1/2,1/4 or 1/8 of former video.The target of video compression is under the prerequisite that guarantees visual effect, to reduce video data rate as far as possible, can further reduce single preview video after handling like this and flow shared bandwidth.
Wherein, this device also comprises takes out frame module, is used for that all preview video code streams are taken out frame and handles, and only extracts I frame or the generation of extraction part I frame regularly preview video code stream.Can further reduce single preview video after handling like this and flow shared bandwidth.
Wherein, this device also comprises broadcast module, is used for putting contingency table program corresponding main video code flow between to the corresponding preview video code stream of STB broadcast preview program with the main broadcaster at main video code flow and/or preview video code stream.
Fig. 9 the present invention is based on the structural representation of an embodiment that STB carries out the device of playing programs; As shown in Figure 9, this device comprises: code stream receiver module 901, main video display module 902, preview video processing module 903 and decodes and plays module 904.
Code stream receiver module 901 comprises all band numeral tuner, is used for receiving main video code flow and preview video code stream respectively through first frequency and second frequency of tuner.Said main video code flow is meant the bit stream data of the current program of watching; Said preview video code stream is meant the bit stream data of the program of institute's preview.
Main video display module 902 is used for carrying out normal play with said main video code flow decoding and at main window.Said main window is meant the window of the current program of watching, said normal play is meant current program normal play of watching.
Preview video processing module 903 is used for instructing according to the video preview that user's needs are selected to comprise frequency point information and previewing program information, controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing.When the user launches the previewing programs function; Find pairing frequency point information of required previewing program and programme information, this frequency of control tuner locking, output transport stream data; The bag identifier (PID) of required audio frequency and video is set, and control data distributor demultiplexing obtains the video data of previewing program.
Decodes and plays module 904 is used for the video data that said previewing program is corresponding and decodes the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.Said the preview window is meant the window of previewing program, mixes with said main window, does not influence the normal play of main window.The video data that said previewing program is corresponding is input to the SD decoder, and decoding obtains the video data that can directly show, according to electric program menu (EPG) or user interface (UI) The Window Design, and the size and the position of adjustment display video window.
Shown in figure 10, this device also comprises: command reception module 1001, cut platform instruction generation module 1002 and playing module 1003.
Cut platform instruction generation module 1002 and be used for the contingency table between previewing program and main video code flow, find the pairing main video flowing program information corresponding of corresponding said selected previewing program video code flow, and the platform instruction is cut in generation;
Be different from the situation of prior art; The present invention is through with non-SD format section order transcoding, changes into the video code flow of the SD form that STB supports, the preview video code stream of transcoding is modulated to and pushes to STB on the frequency different with main video code flow again; In this way; STB can be realized the user when watching current program after having received the main video code flow signal that comprises the preview video code stream, carries out the preview of other program simultaneously; And the preview video code stream is the SD form, can need not to adopt a plurality of tuners with corresponding different respectively preview video code streams, so cost is lower, realizes easily and is accepted by market.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. method of sending video data to STB, it is characterized in that: said method comprises:
Non-SD format section order is carried out real-time transcoding, change into the video code flow of the unified SD form of STB support;
Video code flow behind at least two program transcodings is multiplexed with the video preview code stream;
The preview video code stream that obtains is modulated on the frequency different with main video code flow pushes to STB.
2. method according to claim 1 is characterized in that:
Said with the preview video code stream before the step that STB pushes, comprising: to all preview video code streams that is converted to, carry out resolution compression, reduce the size of resolution, be reduced to 1/2,1/4 or 1/8 of former video.
3. method according to claim 1 and 2 is characterized in that:
Said preview video code stream comprises: all preview video code streams are taken out frame handle, only extract I frame or the generation of extraction part I frame regularly preview video code stream.
4. method according to claim 1 and 2 is characterized in that:
In the time of the said step that the preview video code stream is pushed to STB, comprising: in main video code flow and/or preview video code stream, put the contingency table between the corresponding main video code flow of program with the main broadcaster to the corresponding preview video code stream of STB broadcast preview program.
5. method according to claim 3 is characterized in that:
In the time of the said step that the preview video code stream is pushed to STB, comprising: in main video code flow and/or preview video code stream, put the contingency table between the corresponding main video code flow of program with the main broadcaster to the corresponding preview video code stream of STB broadcast preview program.
6. one kind is carried out the method for playing programs based on STB, and it is characterized in that: said method comprises:
Through adopting all band numeral tuner to realize that single tuner receives a plurality of frequency code streams simultaneously, wherein first frequency receives main video code flow, with said main video code flow decoding and in main window, carry out normal play;
The video preview of selecting to comprise frequency point information and previewing program information according to user's needs instructs, and controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing;
The video data that said previewing program is corresponding is decoded, the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.
7. method according to claim 6 is characterized in that: comprise after the step of the video data that the previewing program that the said while, broadcast decoder obtained in the preview window is corresponding:
Reception comprises the instruction of the playblast program of selected previewing program information;
In the contingency table between previewing program and main video code flow, find the pairing main video flowing program information corresponding of corresponding said selected previewing program video code flow, and the platform instruction is cut in generation;
Instruct according to the said platform of cutting, control the frequency that the corresponding tuner of main video window switches to the fixed main video place of main separation, main video window is play main video.
8. one kind is sent the device of video data to STB, and it is characterized in that: said device comprises:
The transcoding module is used for non-SD format section order is carried out real-time transcoding, changes into the video code flow of the unified SD form of STB support;
Multiplexing module is used for the video code flow behind at least two program transcodings is multiplexed with the video preview code stream;
Push module, be used for the preview video code stream that obtains is modulated on the frequency different with main video code flow and push to STB.
9. device according to claim 8 is characterized in that: said device also comprises:
Compression module is used for preview video code stream that all are converted to, carries out resolution compression, reduces the size of resolution, is reduced to 1/2,1/4 or 1/8 of former video;
Take out frame module, be used for that all preview video code streams are taken out frame and handle, only extract I frame or the generation of extraction part I frame regularly preview video code stream;
Broadcast module is used for putting contingency table program corresponding main video code flow between to the corresponding preview video code stream of STB broadcast preview program with the main broadcaster at main video code flow and/or preview video code stream.
10. one kind is carried out the device of playing programs based on STB, and it is characterized in that: said device comprises:
The code stream receiver module comprises all band numeral tuner, is used for receiving main video code flow and preview video code stream respectively through first frequency and second frequency of tuner;
Main video display module is used for carrying out normal play with said main video code flow decoding and at main window;
The preview video processing module is used for instructing according to the video preview that user's needs are selected to comprise frequency point information and previewing program information, controls the said preview frequency of second locking frequency point, the corresponding video data of the said previewing program of demultiplexing;
The decodes and plays module is used for the video data that said previewing program is corresponding and decodes the video data that the previewing program that broadcast decoder obtains in the preview window is corresponding.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102857816A (en) * | 2012-08-16 | 2013-01-02 | 深圳市同洲电子股份有限公司 | Playing control method and playing control device of broadcasting program |
| CN103747319A (en) * | 2013-12-16 | 2014-04-23 | 乐视致新电子科技（天津）有限公司 | Intelligent television program previewing method and intelligent television |
| CN104639988A (en) * | 2015-01-22 | 2015-05-20 | 深圳创维数字技术有限公司 | Program preview method and program preview device |
| CN105828158A (en) * | 2016-03-22 | 2016-08-03 | 乐视网信息技术（北京）股份有限公司 | Multi-window video playing-based playing quality adjusting method and device |
| CN105915979A (en) * | 2016-04-19 | 2016-08-31 | 乐视控股（北京）有限公司 | Video play method and device |
| CN110753251A (en) * | 2018-07-23 | 2020-02-04 | 优视科技有限公司 | Video switching method and device and electronic equipment |
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| CN102857816A (en) * | 2012-08-16 | 2013-01-02 | 深圳市同洲电子股份有限公司 | Playing control method and playing control device of broadcasting program |
| CN103747319A (en) * | 2013-12-16 | 2014-04-23 | 乐视致新电子科技（天津）有限公司 | Intelligent television program previewing method and intelligent television |
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| CN105828158A (en) * | 2016-03-22 | 2016-08-03 | 乐视网信息技术（北京）股份有限公司 | Multi-window video playing-based playing quality adjusting method and device |
| CN105915979A (en) * | 2016-04-19 | 2016-08-31 | 乐视控股（北京）有限公司 | Video play method and device |
| CN110753251A (en) * | 2018-07-23 | 2020-02-04 | 优视科技有限公司 | Video switching method and device and electronic equipment |
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