CN1960450B - Method and device for switching channels of multimedia broadcast - Google Patents
Method and device for switching channels of multimedia broadcast Download PDFInfo
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- CN1960450B CN1960450B CN200610126819A CN200610126819A CN1960450B CN 1960450 B CN1960450 B CN 1960450B CN 200610126819 A CN200610126819 A CN 200610126819A CN 200610126819 A CN200610126819 A CN 200610126819A CN 1960450 B CN1960450 B CN 1960450B
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Abstract
In the invention, terminal receives the data in channel A, and after the processing by first processing channel, displays the received data as the first image; in the play process, if the terminal receives the channel switch instruction from user, it begins to search the data of new channel to be switched to; after finding the data of new channel, the second processing channel decodes the data of new channel; before the condition of stopping the channel switch is satisfied, if the terminal receives an instruction to switch to a new channel, then re-searching the channel to be switched to, and processing it in second processing channel; otherwise, the terminal play the data in last-switched channel, and stops to receive the data in another channel.
Description
Technical field
The present invention relates to a kind of mobile multi-media terminal that is used to watch multimedia broadcasting, also relate to a kind of method and apparatus of channel seamless switching of multi-media broadcast terminal.
Background technology
The digital mobile multimedia broadcasting network provides many kinds of service content, multiple abundant programs such as for example advertisement, weather forecast, news, sports cast, variety, radio play, film for the terminal use.DMB can provide many cover TV programme simultaneously, and the user can select the service program of Mobile Multimedia Broadcasting according to the hobby of oneself.
But because the restriction of video coding technique and wireless broadcast channel modulation technique, after the terminal use initiated the channel switching, needs waited for that one time could normally receive the business tine of target channel.Consider the complexity of Radio Link, the average switching stand-by period of terminal generally will surpass for three seconds, therefore the pause phase that appearance is watched need provide a kind of processing method to solve the problem that the user waits in the channel handoff procedure in terminal, could provide better service and experience for the user.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of multimedia broadcasting (DMB) channels changing method, when being used for carrying out the channel switching during multimedia broadcasting program is watched, watches experience for the user provides continual multimedia broadcasting.
Another problem that the present invention will solve provides a kind of multi-media broadcast terminal, makes multi-media broadcast terminal can play the program of a plurality of channels simultaneously.
The invention provides a kind of channel switching method of multimedia broadcasting, be applied to receive simultaneously and to play the multi-media broadcast terminal of two channel datas, the method includes the steps of:
(a) terminal receives the data of a certain channel A, in first cannel broadcast, is shown as first picture;
(b) in playing process, the instruction of terminal as receiving that users with channel switches, execution in step (c), otherwise, continue to play;
(c) terminal begins to search for the data of the new channel that will switch to, and in the time of new channel data that terminal searching will switch to, continues the data at the first cannel broadcast channel A, is shown as first picture;
(d) terminal searching is decoded to this channel data that receives at second channel after the data of the new channel that will switch to;
(e) before the condition that the channel switching stops to satisfy, terminal was returned step (c) as receiving the instruction that switches to another new channel, otherwise, execution in step (f);
(f) terminal is play the data of the channel that switches at last at first channel with the form of first picture, and stops the reception to channel A data, finishes.
In the described step (d),, only carry out video decode, and display the play during at second channel with the form of second picture to the data decode of the new channel that switches to, terminal shows two pictures simultaneously in the channel handoff procedure, closes this second picture in the step (f) during finishing switching again.
Channel in the described step (e) switches stop condition: second picture begins to play in the fixed time of back does not have new channel handover operation or terminal to receive the instruction that the user stops to switch. and described step (e) is before the condition that the channel switching stops to satisfy, terminal is as receiving the instruction that switches to another new channel, earlier former channel data in second cannel broadcast is switched to first cannel broadcast, show with first picture, and then return step (c).
In the described step (d), when second channel is decoded to the new channel data that receive, only the low-resolution video data of the new channel that receives are decoded.
The present invention also provides a kind of multi-medium broadcasting receiving terminal, the Data Receiving unit, first decoding unit, first output unit and the display unit that comprise the man-machine interface unit and link to each other successively, it is characterized in that: also comprise the channel switch control unit that links to each other with described man-machine interface unit, second decoding unit that links to each other with described Data Receiving unit and second output unit that links to each other with display unit with described second decoding unit, wherein:
Described Data Receiving unit can receive a plurality of channel datas simultaneously, output audio/video multimedia packed data to the first decoding unit and/or second decoding unit;
Described first decoding unit and second decoding unit are used for the multimedia packed data is decoded, and output to first output unit and second output unit respectively;
Described first output unit and second output unit are used for decoded multi-medium data is processed into video data and exports display unit to, described display unit shows the video data that first output unit is exported with first picture, shows the video data of second output unit output with second picture;
Described man-machine interface unit is used for the mutual of user and terminal, and the relevant instruction of channel switching is sent to described channel switch control unit;
Described channel switch control unit is used for according to user instruction, manages above-mentioned each module; The control data receiving element outputs to the processing of first decoding unit with the data of initial channel, in handoff procedure, the data that search the new channel that will switch to are outputed to second decoding unit to be handled, after switching stops, play the data of the channel that switches at last again with the form of first picture at first channel, and stop reception to the initial channel data, close second picture, wherein, described channel switch control unit is in the new channel data that search will switch to, control described Data Receiving unit and continue the data of initial channel are outputed to the processing of first decoding unit, show with first picture.
Described channel switch control unit is judged second picture and is begun to play when not having new channel handover operation in the fixed time of back or receiving the instruction that the user stops to switch, and thinks that channel switches to stop.
Described display unit shows described first picture and second picture in different viewing areas.
Utilize channel switching method provided by the invention, terminal makes the user can carry out channel during watching multimedia broadcasting program to switch, and the former program of watching continues to play during switching, thereby can obviously not feel interruption program process when switching.Described method is experienced for the terminal use provides continual MBMS service, has realized the seamless switching of channel.
Terminal provided by the invention can receive, decodes and play a plurality of channels simultaneously, thereby realizes watching simultaneously a plurality of channels.
Description of drawings
Fig. 1 is an embodiment of the invention multi-media broadcast terminal structured flowchart;
Fig. 2 is the effect schematic diagram that the embodiment of the invention is play two pictures of two channels simultaneously;
Fig. 3 carries out the flow chart that channel switches during embodiment of the invention terminal is watched multimedia service.
Embodiment
Fig. 1 is the structured flowchart of embodiment of the invention multi-media broadcast terminal. comprising multimedia broadcast data receiving element 110, first decoding unit 120, first output unit 130, and channel switch control unit 140, second decoding unit 150, second output unit 160, man-machine interface unit 170 and display unit 180. display units 180 are connected to first output unit 130 and second output unit 160, be used for and be shown as first picture 210 from the vision signal of first output unit input, the video data of second output unit input is shown as second picture 220, as shown in Figure 2. first picture and second picture are positioned at the zones of different on the same display device, the two can be overlapping, can be not overlapping yet, can there be various ways its mutual alignment, occupy in the middle of first picture as second picture, the upper right corner, or first picture and second picture be in respectively screen about etc. all output all is to output to the display buffer earlier, and clear screen is realized again. followingly also first decoding unit 120 and first output unit 130 are collectively referred to as the first channel treatment channel; Second decoding unit 150 and second output unit 160 are collectively referred to as the second channel treatment channel.
Channel switch control unit 140 according to user instruction, is managed above-mentioned other module in handoff procedure, finish following operation: multimedia broadcast data receiving element 110 receiving multimedia broadcast program datas, multimedia packed datas such as output audio frequency and video.When not carrying out the channel switching, the channel data that the Data Receiving unit receives is in first cannel broadcast of terminal inner, promptly handle in the first channel treatment channel, promptly the audio frequency and video packed data of Jie Shouing carries out multimedia decoding at first decoding unit 120, offer first output unit 130 again and be treated to video data, and then play at display unit 180 with the form of first picture 210.When the channel switching took place, channel switch control unit 140 control data receiving elements 110 continued to receive and play in the maintenance of first channel data of original channel, and the data of meanwhile searching for the channel that will switch to also receive; In the time can receiving the data of the channel that will switch to, it is outputed to second cannel broadcast; After being Data Receiving, in second decoding unit 150, only carry out video decode, do not carry out audio decoder.Decoded second channel data is treated to video data at second output unit 160, plays at display unit 180 with the form of second picture 220.The audio frequency of terminal plays keeps the voice playing of first channel.Man-machine interface unit 170 is used to receive user's input operation, links to each other with the channel control unit.
Fig. 3 be the embodiment of the invention during watching multimedia service, the flow chart that the terminal processes channel switches, step is as follows:
Step 301: the data of terminal receiving channels A in first cannel broadcast, promptly by decoding of the first channel treatment channel and broadcast, are shown as first picture;
Step 302: in playing process, the instruction of terminal as receiving that users with channel switches, execution in step 303, otherwise, continue to play;
Above-mentioned channel handover operation can produce the channel switching by user's button operation or other input modes, as switches to channel B.
Step 303: terminal continues the data at the first cannel broadcast channel A, promptly in the first channel treatment channel to channel A data decode and broadcast, begin to search for the data of the channel that will switch to simultaneously;
Wherein this channel data is not carried out audio decoder, and can be only local data's (as low-resolution video data) of these channel video data of receiving be decoded, so that under the form with little picture shows, reduce the decoding operand, improve decoding speed.
Step 305: before the condition that the channel switching stops to satisfy, terminal was returned step 303 as receiving the instruction that switches to another channel (as channel C), otherwise, execution in step 306;
Above-mentioned judgement is the process of a timing and supervisory keyboard input. whenever searching a new channel and beginning to carry out timing in the moment that second picture is play, do not receive new channel switching key input if be accumulated to certain hour (for example 3 seconds) terminal, think that then the channel switching stops. the another one stop condition is that the user initiatively selects to stop, for example pressed ESC Escape, even the cumulative time is less than three seconds, think that also the channel switching stops.
Step 306: terminal stops the reception to channel A data, and original channel data in second cannel broadcast is switched to first cannel broadcast, finishes.
Adopt said method, search behind the channel that will switch to not directly in first cannel broadcast, because this channel that the searches channel that really will see of user not necessarily, perhaps through the consideration in a second, the user takes turns again and has changed another channel into.Have only the user to stop change action, just can be in first cannel broadcast.Helping terminal like this realizes.Because it is not only the switching of picture that channel switches, also to relate to the switching of decoding unit.
In one example, suppose that the user seeing one in central authorities, is shown as first picture in first cannel broadcast.At this time users with channel switches, and the new channel search needs a period of time, and inherent during this period of time first channel continues to play one in central authorities; Suppose to have searched two in central authorities, then be shown as second picture in second cannel broadcast, at this time the user also can continue by channel switch key (for example " CH+ " key), supposes to switch to three in central authorities, at second picture show the content of central authorities three in second cannel broadcast this moment.Stop to have switched up to the user, just switched to first cannel broadcast (just only having stayed first picture on the display) at the channel of second cannel broadcast.The existence of second picture is convenient to the action that the user knows that channel switches and is responded.Otherwise the user can think do not have reaction half a day by behind the switch key.Certainly, another effect of second picture has realized that really the user watches multichannel simultaneously.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
For example: in another embodiment of the present invention, shouldn't second output unit, compare with last embodiment, the second channel treatment channel has only second decoding unit, its step 301 is to 303, change " this channel data that will receive is decoded by the second channel treatment channel " in the step 304 into, no playing function; Judge in the step 305 whether channel stops to switch, refer to begin to carry out timing in the moment that whenever searches a new channel and finish a full frame decoding, accumulative total to certain hour as there not being new channel switching key input 3 seconds, or the user selects to stop to switch; Step 306 is the same.
In another embodiment of the present invention, after carrying out step 305 and terminal and receiving the instruction that switches to another channel, do not return step 303, but execution following steps: earlier former channel data in second cannel broadcast is switched to first cannel broadcast, show the data of the channel that search will switch to first picture; And then return step 304.Other step is identical.If at the beginning at first channel with the first picture broadcasting channel A, the user has selected the program of channel B, C, D respectively in handoff procedure.When realizing by first embodiment so, indicated channel A+B according to the order of sequence on the screen, A+C, the picture of A+D.And when pressing present embodiment and realizing, indicated channel A+B according to the order of sequence on the screen, B+C, the picture of C+D.
Claims (8)
1. the channel switching method of a multimedia broadcasting is applied to receive simultaneously and to play the multi-media broadcast terminal of two channel datas, and the method includes the steps of:
(a) terminal receives the data of a certain channel A, in first cannel broadcast, is shown as first picture;
(b) in playing process, the instruction of terminal as receiving that users with channel switches, execution in step (c), otherwise, continue to play;
(c) terminal begins to search for the data of the new channel that will switch to, and in the time of new channel data that terminal searching will switch to, continues the data at the first cannel broadcast channel A, is shown as first picture;
(d) terminal searching is decoded to this channel data that receives at second channel after the data of the new channel that will switch to;
(e) before the condition that the channel switching stops to satisfy, terminal was returned step (c) as receiving the instruction that switches to another new channel, otherwise, execution in step (f);
(f) terminal is play the data of the channel that switches at last at first channel with the form of first picture, and stops the reception to channel A data, finishes.
2. the method for claim 1, it is characterized in that: in the described step (d), at second channel during to the data decode of the new channel that switches to, only carry out video decode, and display the play with the form of second picture, terminal shows two pictures simultaneously in the channel handoff procedure, closes this second picture in the step (f) during finishing switching again.
3. method as claimed in claim 2 is characterized in that: the channel in the described step (e) switches stop condition and is: second picture began to play in the fixed time of back does not have new channel handover operation or terminal to receive the instruction that the user stops to switch.
4. as claim 2 or 3 described methods, it is characterized in that: described step (e) is before the condition that the channel switching stops to satisfy, terminal is as receiving the instruction that switches to another new channel, earlier former channel data in second cannel broadcast is switched to first cannel broadcast, show with first picture, and then return step (c).
5. as claim 1,2 or 3 described methods, it is characterized in that: in the described step (d), when second channel is decoded to the new channel data that receive, only the low-resolution video data of the new channel that receives are decoded.
6. multi-medium broadcasting receiving terminal, the Data Receiving unit, first decoding unit, first output unit and the display unit that comprise the man-machine interface unit and link to each other successively, it is characterized in that: also comprise the channel switch control unit that links to each other with described man-machine interface unit, second decoding unit that links to each other with described Data Receiving unit and second output unit that links to each other with display unit with described second decoding unit, wherein:
Described Data Receiving unit can receive a plurality of channel datas simultaneously, output audio/video multimedia packed data to the first decoding unit and/or second decoding unit;
Described first decoding unit and second decoding unit are used for the multimedia packed data is decoded, and output to first output unit and second output unit respectively;
Described first output unit and second output unit are used for decoded multi-medium data is processed into video data and exports display unit to, described display unit shows the video data that first output unit is exported with first picture, shows the video data of second output unit output with second picture;
Described man-machine interface unit is used for the mutual of user and terminal, and the relevant instruction of channel switching is sent to described channel switch control unit;
Described channel switch control unit is used for according to user instruction, manages above-mentioned each module; The control data receiving element outputs to the processing of first decoding unit with the data of initial channel, in handoff procedure, the data that search the new channel that will switch to are outputed to second decoding unit to be handled, after switching stops, play the data of the channel that switches at last again with the form of first picture at first channel, and stop reception to the initial channel data, close second picture, wherein, described channel switch control unit is in the new channel data that search will switch to, control described Data Receiving unit and continue the data of initial channel are outputed to the processing of first decoding unit, show with first picture.
7. multi-medium broadcasting receiving terminal as claimed in claim 6, it is characterized in that: described channel switch control unit is judged second picture and is begun to play when not having new channel handover operation in the fixed time of back or receiving the instruction that the user stops to switch, and thinks that channel switches to stop.
8. as claim 6 or 7 described multi-medium broadcasting receiving terminals, it is characterized in that: described display unit shows described first picture and second picture in different viewing areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200610126819A CN1960450B (en) | 2006-09-05 | 2006-09-05 | Method and device for switching channels of multimedia broadcast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610126819A CN1960450B (en) | 2006-09-05 | 2006-09-05 | Method and device for switching channels of multimedia broadcast |
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| CN1960450A CN1960450A (en) | 2007-05-09 |
| CN1960450B true CN1960450B (en) | 2010-05-12 |
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| CN200610126819A Expired - Fee Related CN1960450B (en) | 2006-09-05 | 2006-09-05 | Method and device for switching channels of multimedia broadcast |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179700B (en) * | 2006-12-20 | 2011-05-11 | 腾讯科技（深圳）有限公司 | Program source switch method and stream media play system |
| CN103188529A (en) * | 2011-12-27 | 2013-07-03 | 北京朝歌数码科技股份有限公司 | Multimedia play method for switching from first channel to second channel and multimedia play device |
| KR20130128140A (en) * | 2012-05-16 | 2013-11-26 | 현대모비스 주식회사 | Digital radio receiver and method for providing digital radio |
| CN104469541A (en) * | 2013-09-18 | 2015-03-25 | 中兴通讯股份有限公司 | IPTV channel switching method, IPTV channel switching device and terminal |
| CN104080001B (en) * | 2014-06-23 | 2015-12-09 | 深圳市中兴移动通信有限公司 | The method of FM broadcasting automatically switching channels and playback terminal |
| CN106385398B (en) * | 2016-01-12 | 2019-05-14 | 涂旭平 | Real-time video transcoding task seamless migration method |
| CN110933506B (en) * | 2019-11-14 | 2021-10-22 | 武汉兴图新科电子股份有限公司 | Method and system for seamless switching of encoding and decoding |
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| CN1310919A (en) * | 1998-09-16 | 2001-08-29 | Actv公司 | Compressed digital-data seamless video switching system |
| WO2005074290A1 (en) * | 2004-01-29 | 2005-08-11 | Koninklijke Philips Electronics, N.V. | A digital television system with rapid channel surfing |
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