CN101436915A - Method and apparatus for receiving and playing multimedia program by mobile terminal - Google Patents
Method and apparatus for receiving and playing multimedia program by mobile terminal Download PDFInfo
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Abstract
The invention relates to a method and a device for receiving and playing multimedia programs through a mobile terminal, which is used for a terminal to switch from the mode of receiving and playing multimedia broadcast programs from a broadcast network to downloading corresponding stream media data from a switched network. The method comprises the following steps: searching target equipment information of corresponding stream media data according to information of a current program of the broadcast network and acquiring position information to be played after switching the current program when the terminal needs switching; and downloading the corresponding stream media data to be played in the current program from the target equipment to perform playing. The method is implemented through providing corresponding devices. When the continuous reception effect is influenced by poor signals when the terminal receives and plays the multimedia broadcast programs through the broadcast network, the method can automatically switch or manually switch the terminal to a mobile interactive network to download the stream media with the same content for continuous playing, thus the reception experience of users can be improved as far as possible.
Description
Technical field
The present invention relates to filed of mobile multimedia broadcasting and Streaming Media field, relate in particular to the method and the device of receiving and playing multimedia program by mobile terminal.
Background technology
Mobile Multimedia Broadcasting, such as China Mobile multimedia broadcasting (CMMB, China MobileMultimedia Broadcast), it is a kind of mobile multi-media service based on radio network, have availability of frequency spectrum height, capacity and reach various advantages such as construction cost is relatively low greatly, obtained extensive use gradually.
Radio network be coated with certain blind area, and the broadcast singal penetrance is subjected to influences such as building, therefore when the user when watching program, if broadcast singal enters the blind area from good area, then can influence the effect of watching of program.And in the area with mobile Internet, the user can use streaming media service to come TV reception by terminal.
Along with popularizing of the multimedia terminal of supporting Mobile Multimedia Broadcasting (as CMMB) standard, the user has had higher requirement for the effect of the reception play multimedia broadcast program of terminal.When the Streaming Media signal of the bad and mobile Internet of broadcast singal of radio network is good, perhaps, the user is to the broadcast singal of radio network when dissatisfied, if can make the user automatically switch to the Internet from radio network, then the user just might watch the current program that quality is good from the Internet, thereby the rating of improving the user is greatly experienced.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and device of receiving and playing multimedia program by mobile terminal, can not replace with corresponding Streaming Media signal when the signal of radio network is good, to guarantee user watched quality as much as possible.
In order to solve the problems of the technologies described above, the invention provides a kind of method of receiving and playing multimedia program by mobile terminal, being used for terminal switches to from switching network download corresponding stream media data from radio network receiving and playing multimedia broadcast program, this method comprises: when terminal need be switched, according to the information search of the current program of radio network target device information, and obtain the positional information that to play after current program switches to corresponding stream medium data; Downloading the corresponding stream media data that current program will play from target device plays.
Further, terminal is specially according to the information search of the current program of the radio network processing to the target device information of corresponding flow-medium performance: front end is expanded the table of contents information among the electron service instruction ESG in advance, increases the target device information that is used to explain the stream medium data consistent with the program identification of multimedia broadcasting program in table of contents information; When terminal need be switched, in the table of contents information of ESG, search the target device information of corresponding stream medium data according to the program identification of current program.
Further, terminal is specially according to the information search of the current program of the radio network processing to the target device information of corresponding flow-medium performance: terminal searches the target device information of corresponding flow-medium performance according to the program identification of the current program of radio network by mutual net.
Further, terminal is obtained the positional information of current playing programs and is comprised from the processing that target device is downloaded the corresponding stream media data that will play: time span parameter of having play or the current program time span parameter to be played of obtaining current program according to program identification; Then, send playing request, carry the time span parameter in this request to the target device of the flow-medium performance of correspondence; The target device of flow-medium performance returns plays response, and carries the corresponding stream media data that will play in response.
Further, the described time span of having play equals current system time and switches the time sum and deduct the broadcast start time of current program; Perhaps, the described time span of not broadcasting the as yet end reproduction time that equals current program with switch the time sum and deduct current system time; Switching time comprises mutual time of terminal and target device at least.
Further, terminal is obtained positional information that current program will play and is specially from the processing that target device is downloaded the corresponding stream media data that will play: terminal is in advance according to the mode of mutual net agreement the broadcast multimedia programme content being divided into data block go forward side by side row labels and storage; When terminal need be switched, obtain the data block information that current program will be play according to the program identification of current program; Then, the target device transmission playing request to flow-medium performance carries this data block information in this request; Target device returns plays response, and carries the corresponding stream media data piece in response.
In order to solve the problems of the technologies described above, the invention provides a kind of device of receiving and playing multimedia program by mobile terminal, be used for terminal and switch to from switching network receipts broadcasting flow-medium program from radio network receiving and playing multimedia broadcast program; Described device comprises interconnective handover information acquisition module and information interaction module; Wherein:
The handover information acquisition module is used for when terminal need be switched, and according to the information of current program, the positional information that will play after the switching target facility information of the current program correspondence that searches and the current program that obtains switched is exported to the information interaction module;
The information interaction module, the positional information that will play after being used for switching according to the switching target facility information of correspondence of input and current program is play from the corresponding stream media data that the current program of switching target device downloads will be play.
Further, described device also comprises memory module, is used for store electrons business guide ESG information at least; The handover information acquisition module contains respectively the handoff target information acquiring unit that is connected with the information interaction module with memory module at least, be used for program identification, find pre-configured Streaming Media switching target facility information to export to the information interaction module in the ESG information from memory module according to current program;
Perhaps, change the program identification of information acquisition module, will search current program switching target facility information by mutual net and export to the information interaction module according to current program.
Further, the handover information acquisition module also contains respectively the current program information acquiring unit that is connected with the information interaction module with memory module, be used for when terminal need be switched, from the ESG information of memory module, search the time span of having play of the current program that obtains or the time span to be played of current program is exported to the information interaction module according to the program identification of current program; Wherein, the time span of having play equals current system time and switches the time sum and deduct the broadcast start time of current program; Perhaps, the time span to be played end reproduction time that equals current program with switch the time sum and deduct current system time; Switching time comprises mutual time of terminal and target device at least;
The information interaction module according to switching target facility information and the time span play of current program or the time span to be played of current program of input, is play from the stream medium data that the current program of switching target device downloads will be play.
Further, current program information acquiring unit or be stored in the memory module according to the broadcast multimedia programme content being divided into the data block row labels of going forward side by side in advance with the mode of mutual net agreement; When terminal need be switched, obtain the data block information that current program will be play from memory module according to the program identification of current program; Then, the data block information that current program will be play is exported to the information interaction module;
The information interaction module according to the data block information that the switching target facility information and the current program of input will be play, is play from the data block that the current program of switching target device downloads will be play.
Method provided by the invention and device, make that terminal can be when continuing view reception effect by radio network receiving and playing multimedia broadcast program because of signal difference influences, automatically switch or be manually switched to flow-medium performance that the mobile Internet receives same content and continue to receive and broadcast by the user, expand the approach that improves professional service quality with this, thereby the rating of improving the user is greatly experienced.
Description of drawings
Fig. 1 portable terminal of the present invention is implemented the method flow diagram of receiving and playing multimedia program;
Fig. 2 is the method application example flow chart of portable terminal receiving and playing multimedia broadcast program of the present invention;
Fig. 3 is the structured flowchart of the present invention receiving and playing multimedia broadcast program switching device shifter embodiment on portable terminal.
Embodiment
The invention provides a kind of method and device of receiving and playing multimedia program by mobile terminal, its core main points are, when need switching to when mutual net is received the broadcasting flow-medium program from radio network receiving and playing multimedia broadcast program, terminal (automaticallyes switch during such as the radio network poor signal, or by user's manual switchover), corresponding stream media equipment information is arrived in information search according to the current program of radio network, and obtain the positional information that will play after current program switches, receive the flow-medium performance that conforms to current programme content from stream media equipment and play.
Below in conjunction with accompanying drawing, and be preferred embodiment, technique scheme of the present invention is done more detailed description and explanation with the portable terminal of supporting China Mobile multimedia broadcasting CMMB standard.Should be clear and definite, following embodiment only is used for description and interpretation the present invention, but not is used to limit the present invention.
As shown in Figure 1, the receipts broadcasting method flow chart of the mobile multimedia terminal program of implementing for portable terminal of the present invention, this method comprises the steps:
Step 10: the table of contents information in the front end expansion electron service instruction (ESG, Electronic Service Guide) increases the field of representing Streaming Media destination server information;
As shown in table 1, in the table of contents information of ESG, increase the RTSPInfo field, be defined as follows:
<xs：element?name＝＂RTSPInfo＂
type＝＂anyURI＂minOccurs＝＂0＂maxOccurs＝＂unbounded＂
/>；
Table 1 ESG table of contents information
The RTSPInfo field that increases in the table 1 can have a plurality of, and promptly N is the integer more than or equal to 1, and a plurality of streaming media servers that expressed possibility are all corresponding to certain same program; When one of them server of link does not have response, can attempt linking other server.
In fact, along with the standardization that moves mutual net streaming media service project is more and more stronger, can store Streaming Media destination server information (address and/or the port that comprise the Streaming Media destination server) by the unified information server of mutual net streaming media service at the streaming media service content.So, above-mentioned steps of the present invention just can be omitted, and need be when radio network switches to mutual net in terminal, at first searches Streaming Media destination server information at current programme content from mutual net according to the information (program identification) of current program.
Step 20: when terminal need be when radio network switches to mutual net, according to the content identification (ContentID) of current program, in the table of contents information (i.e. table 1) of electron service instruction, find the streaming media server information RTSPInfo (having a plurality of) of this program correspondence;
Here, terminal need switch to mutual net from radio network, is meant that terminal detects that broadcast singal is bad to automatically switch to mutual net, and perhaps the user feels that the bad manual selection of broadcast singal switches to mutual net.
In fact, need when switching to mutual net, radio network also can search the Streaming Media destination server information corresponding by directly mutual net when terminal according to the content identification of current program with current program.
Step 30: the positional information of obtaining current program according to the program identification of current program;
Here, obtaining of positional information can be according to different mutual net system in different ways, and for example, the time parameter that obtains is the time span Len that program has broadcasted, and carries out as follows:
At first in electronic program guides, search the time sequential routine information table, as shown in table 2, obtain the initial reproduction time StartTime of this program;
Table 2 ESG arrangement information table
| Field name | Semanteme and value type |
| ScheduleType | The dtd of Schedule element. |
| ServiceID | Service identification, the attribute of business element, 16 signless integers have identified a business uniquely in Mobile Multimedia Broadcasting transmission multiplexed frame, and the service identification distribution condition sees Table 1 ServiceParaID. |
| ContentID | Content identification, 16 signless integers, the overall situation is unique. |
| ... | ... |
| StartTime | Time started. |
| EndTime | Concluding time. |
| ForFree | Free indication, Boolean type, " true " expression is free, and " false " represents charge. |
| Live | Live indication, Boolean type, " true " expression is live, and " false " represents video recording. |
| Repeat | The playback indication, Boolean type, " true " represents to replay, and " false " represents first broadcast. |
| ScheduleID | The layout sign, the layout attribute of an element, 16 signless integers, the overall situation is unique. |
Resolve the system time field in the network information table in the multiplexed frame zero (TS0), as shown in table 3, obtain current system time SysTime;
According to the current network time SysTime and the time started StartTime of this program, calculate the time span Len that this program has broadcasted, i.e. Len=SysTime-StartTime.
In fact, the positional information of obtaining also can calculate the time span Len that this program does not broadcast as yet, i.e. Len=EndTime-SysTime according to the current network time SysTime and the concluding time EndTime of this program.
Consider and switch time ReadyTime that i.e. mutual time of terminal and Streaming Media target device at least, the time span of then having broadcasted is: Len=ReadyTime+SysTime-StartTime;
The time span of not broadcasting is as yet: Len=EndTime+ReadyTime-SysTime;
Terminal will continue to receive the signal of broadcasting radio network switching in time, (=ReadyTime ± SysTime) is an original position download stream media data with reservation point switching time then; Shorter as terminal and mutual time of target device, then terminal can first buffer memory data downloaded.
Certainly obtaining of positional information can also be carried out like this: the mode of mutual net system code requirement with one intactly the flow-medium performance content segmentation become data section or data slice, and the mode of this standard is announced to portable terminal by radio network.So, terminal can be in advance be divided into data section or data slice go forward side by side row labels and storage according to the mode of this standard with broadcast program contents; When terminal need then can be obtained data section or the data slice information that current program will be play according to the program identification of current program when radio network switches to mutual net, or the like.
Step 40: according to the streaming media server information RTSPInfo that obtains, to the request that the streaming media server initiation is play, the Range field in request is carried the time parameter of current program;
The time parameter of current program is as duration Len or the duration Len as not broadcasting as yet, the i.e. Range:npt=0.000～Len that has play.
Step 50: the request of streaming media server response terminal, send the stream medium data that is complementary with current program location information, switch to this stream medium data after terminal is received and continue the broadcast program content.
Be complementary with current program location information, for example the time span Len that has broadcasted according to current program provides the programme content of length remaining time; Perhaps, the time span Len that does not broadcast as yet according to current program provides the programme content of length remaining time; Perhaps, obtain data section or the data slice information that current program will be play according to the program identification of current program, or the like.
Table 3 network information table
| Grammer | Figure place | Identifier |
| Network information table () { table identification number NIT table updating sequence number retention system time SysTime national code network-level network number network title length for (i=0; I＜N; I++) other frequency quantity of { character } frequency numbering centre frequency broadband network ... CRC_32 } | 8 4 4 40 24 4 12 8 8 8 32 4 4 ...... 32 | uimsbf bslbf bslbf bslbf uimsbf bslbf bslbf uimsbf uimsbf bslbf bslbf bslbf bslbf ...... uimsbf |
Below come more at large to understand said method of the present invention by a concrete application example.This application example is that terminal switches to mutual when net by radio network automatically and triggers the flow process of being carried out by terminal as shown in Figure 2, and step is as follows:
201:, judge whether to get access to the table of contents information (i.e. table 1) from ESG the information RTSPInfo of the streaming media server corresponding with current program according to the ContentID of current playing program; Be execution in step 202 then, otherwise execution in step 209;
RTSPInfo may be a plurality of, also may not have corresponding RTSPInfo.
202:, from the time sequential routine information table (i.e. table 2) of ESG, obtain the broadcast start time StartTime of this program according to ContentID;
203: obtain current system time SysTime in the network information table from multiplexed frame zero (TS0), and stop to receive the data of radio network;
204: according to system time and program broadcast start time, calculate the time span Len that this program had been play, i.e. Len=system time-broadcast start time;
205: take out the information RTSPInfo of a streaming media server, initiate playing request to this streaming media server, the Range field of wherein carrying is filled out Range:npt=0.000～Len;
206: judge whether the streaming media server response results is normal, if response OK, then execution in step 207, otherwise execution in step 208;
207: receive data from streaming media server and play process ends;
208: judging that whether this program also has other streaming media server information RTSPInfo, is execution in step 205 then; Otherwise execution in step 209;
209: the prompting user does not have media server and can use process ends.
The present invention also proposes to use a kind of multimedia broadcasting program receipts on portable terminal to broadcast switching device shifter, one of embodiment as shown in Figure 3 corresponding to said method.This device 300 comprises interconnective memory module 310, handover information acquisition module 320 and information interaction module 330; Wherein:
Handover information acquisition module 320, be used for after receiving the network switching signal of terminal, according to the program identification (ContentID) of the current program that carries in the signal, current program handoff target information and the current program location information that will obtain in memory module 310 are exported to information interaction module 330;
In above-mentioned handover information acquisition module 320, further comprise handoff target information acquiring unit 3201 and current program information acquiring unit 3202, wherein:
Handoff target information acquiring unit 3201 is connected with information interaction module 330 with memory module 310 respectively, and the streaming media server information RTSPInfo that is used for finding from memory module 310 exports to information interaction module 330;
Current program information acquiring unit 3202, be connected with information interaction module 330 with memory module 310 respectively, be used for calculating current program reproduction time length L en=system time+switching time-initial reproduction time, and this time span Len is exported to information interaction module 330 according to the initial reproduction time of current program that finds from memory module 310 and system time;
Except embodiment shown in Figure 3, the present invention can also exemplify out other embodiment.For example handover information acquisition module 320 is after receiving the network switching signal of terminal, program identification according to the current program that carries in the signal, directly (and needn't by memory module 310) exports to information interaction module 330 from the current program handoff target information that mutual net obtains, and obtains current program location information by memory module 310 and export to information interaction module 330.
In a word, method provided by the invention and device, can make terminal play when the too poor influence of broadcast singal face radio network continues to watch programme content at mobile multi-media program, automatically switch to mobile Internet receiving stream media, perhaps initiatively select handover network by the user, continue to receive and broadcast the good current program of viewing effect, can improve user's rating thus greatly and experience.
Certainly; the present invention can also 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 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.
Claims (10)
1, a kind of method of receiving and playing multimedia program by mobile terminal, being used for described terminal switches to from switching network download corresponding stream media data from radio network receiving and playing multimedia broadcast program, this method comprises: when described terminal need be carried out described switching, according to the information search of the current program of described radio network target device information, and obtain the positional information that to play after described current program switches to corresponding stream medium data; Downloading the corresponding stream media data that described current program will play from described target device plays.
2, in accordance with the method for claim 1, it is characterized in that, described terminal is specially according to the information search of the current program of the described radio network processing to the target device information of corresponding flow-medium performance: front end is expanded the table of contents information among the electron service instruction ESG in advance, increases the target device information that is used to explain the described stream medium data consistent with the program identification of described multimedia broadcasting program in described table of contents information; When described terminal need be carried out described switching, in the table of contents information of described ESG, search the target device information of the stream medium data of described correspondence according to the program identification of described current program.
3, in accordance with the method for claim 1, it is characterized in that, described terminal is specially according to the information search of the current program of the described radio network processing to the target device information of corresponding flow-medium performance: described terminal searches the target device information of corresponding flow-medium performance according to the program identification of the current program of described radio network by described mutual net.
4, in accordance with the method for claim 2, it is characterized in that described terminal is obtained the positional information of described current playing programs and comprised from the processing that described target device is downloaded the described corresponding stream media data that will play: time span parameter of having play or the described current program time span parameter to be played of obtaining described current program according to described program identification; Then, send playing request, carry described time span parameter in the described request to the target device of the flow-medium performance of described correspondence; The target device of described flow-medium performance returns plays response, and carries the described corresponding stream media data that will play in described response.
5, in accordance with the method for claim 4, it is characterized in that the described time span of having play equals current system time and switches the time sum and deduct the broadcast start time of described current program; Perhaps, the described time span to be played end reproduction time that equals described current program with switch the time sum and deduct current system time; Described switching comprises the mutual time of described terminal and described target device time at least.
6, in accordance with the method for claim 2, it is characterized in that described terminal is obtained positional information that described current program will play and is specially from the processing that described target device is downloaded the described corresponding stream media data that will play: described terminal is in advance according to the mode of mutual net agreement the broadcast multimedia programme content being divided into data block go forward side by side row labels and storage; When described terminal need be carried out described switching, obtain the data block information that current program will be play according to the program identification of described current program; Then, the target device transmission playing request to described flow-medium performance carries described data block information in the described request; Described target device returns plays response, and carries the corresponding stream media data piece in described response.
7, a kind of device of receiving and playing multimedia program by mobile terminal is used for described terminal and switches to from switching network receipts broadcasting flow-medium program from radio network receiving and playing multimedia broadcast program; It is characterized in that described device comprises interconnective handover information acquisition module and information interaction module; Wherein:
Described handover information acquisition module, described terminal is used for when need be carried out described switching, according to the information of current program, the positional information that will play after the switching target facility information of the current program correspondence that searches and the current program that obtains switched is exported to described information interaction module;
Described information interaction module, the positional information that will play after being used for switching according to the switching target facility information of described correspondence of input and current program is play from the corresponding stream media data that the described current program of described switching target device downloads will be play.
According to the described device of claim 6, it is characterized in that 8, described device also comprises memory module, be used for store electrons business guide ESG information at least; Described handover information acquisition module contains respectively the handoff target information acquiring unit that is connected with described information interaction module with described memory module at least, be used for program identification, find pre-configured Streaming Media switching target facility information to export to described information interaction module in the described ESG information from described memory module according to current program;
Perhaps, described handover information acquisition module will search current program switching target facility information by mutual net and export to described information interaction module according to the program identification of current program.
9, according to the described device of claim 7, it is characterized in that, described handover information acquisition module also contains respectively the current program information acquiring unit that is connected with described information interaction module with described memory module, be used for when described terminal need be carried out described switching, from the ESG information of described memory module, search the time span of having play of the current program that obtains or the time span to be played of current program is exported to described information interaction module according to the program identification of described current program; Wherein, the described time span of having play equals current system time and switches the time sum and deduct the broadcast start time of described current program; Perhaps, the described time span to be played end reproduction time that equals described current program with switch the time sum and deduct current system time; Described switching comprises the mutual time of described terminal and described target device time at least;
Described information interaction module, according to switching target facility information and the time span play of current program or the time span to be played of current program of input, play from the stream medium data that the described current program of described switching target device downloads will be play.
10, according to the described device of claim 8, it is characterized in that described current program information acquiring unit or be stored in the described memory module according to the broadcast multimedia programme content being divided into the data block row labels of going forward side by side in advance with the mode of mutual net agreement; When described terminal need be carried out described switching, obtain the data block information that current program will be play from described memory module according to the program identification of described current program; Then, the data block information that described current program will be play is exported to described information interaction module;
Described information interaction module according to the data block information that the switching target facility information and the described current program of input will be play, is play from the data block that the described current program of described switching target device downloads will be play.
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| CN101873540A (en) * | 2010-06-10 | 2010-10-27 | 东莞市泰斗微电子科技有限公司 | Method for switching mobile multimedia broadcasting services and corresponding receiving device |
| CN102082958B (en) * | 2009-12-01 | 2013-02-13 | 中国电信股份有限公司 | Method and system for obtaining CMMB (China Mobile Multimedia Broadcasting) electronic program guide based on mobile communication channel |
| CN103326801A (en) * | 2012-03-23 | 2013-09-25 | 联想(北京)有限公司 | Method and system for controlling on-line information playing and mobile terminal |
| CN103718528A (en) * | 2013-08-30 | 2014-04-09 | 华为技术有限公司 | Method of cooperatively playing multimedia files by means of multiple terminals, related equipment and related system |
| CN104469242A (en) * | 2013-09-25 | 2015-03-25 | 联想(北京)有限公司 | Signal switching method and electronic device |
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| CN102082958B (en) * | 2009-12-01 | 2013-02-13 | 中国电信股份有限公司 | Method and system for obtaining CMMB (China Mobile Multimedia Broadcasting) electronic program guide based on mobile communication channel |
| CN101873540A (en) * | 2010-06-10 | 2010-10-27 | 东莞市泰斗微电子科技有限公司 | Method for switching mobile multimedia broadcasting services and corresponding receiving device |
| CN103326801A (en) * | 2012-03-23 | 2013-09-25 | 联想(北京)有限公司 | Method and system for controlling on-line information playing and mobile terminal |
| CN103718528A (en) * | 2013-08-30 | 2014-04-09 | 华为技术有限公司 | Method of cooperatively playing multimedia files by means of multiple terminals, related equipment and related system |
| CN103718528B (en) * | 2013-08-30 | 2016-09-28 | 华为技术有限公司 | A kind of multiple terminals is worked in coordination with and is play the method for multimedia file and relevant apparatus and system |
| CN104469242A (en) * | 2013-09-25 | 2015-03-25 | 联想(北京)有限公司 | Signal switching method and electronic device |
| CN105872796A (en) * | 2015-11-27 | 2016-08-17 | 乐视网信息技术（北京）股份有限公司 | Method and device for switching broadcast television program to on-demand program |
| WO2017088404A1 (en) * | 2015-11-27 | 2017-06-01 | 乐视控股（北京）有限公司 | Method and apparatus for switching broadcast programme to on-demand programme |
| CN109996117A (en) * | 2019-03-04 | 2019-07-09 | 青岛海信传媒网络技术有限公司 | A kind of method and apparatus obtaining streaming media playing duration |
| CN113132816A (en) * | 2019-12-30 | 2021-07-16 | 深圳Tcl数字技术有限公司 | Program switching method, terminal, system and storage medium |
| CN113132816B (en) * | 2019-12-30 | 2023-08-01 | 深圳Tcl数字技术有限公司 | Program switching method, terminal, system and storage medium |
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