CN104469541A - IPTV channel switching method, IPTV channel switching device and terminal - Google Patents
IPTV channel switching method, IPTV channel switching device and terminal Download PDFInfo
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- CN104469541A CN104469541A CN201310428720.3A CN201310428720A CN104469541A CN 104469541 A CN104469541 A CN 104469541A CN 201310428720 A CN201310428720 A CN 201310428720A CN 104469541 A CN104469541 A CN 104469541A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 206010048909 Boredom Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses an IPTV channel switching method, an IPTV channel switching device and a terminal, and relates to the technical field of communication. Such problems as picture stagnation, low picture quality and poor user experience during channel switching in the prior art can be solved. The method comprises the following steps: receiving a channel switching instruction of a user, wherein the channel switching instruction carries information of a first target channel; receiving a first target data stream from the first target channel according to the channel switching instruction and continuing receiving an original data stream from an original channel and playing the original data stream; stopping receiving the original data stream from the original channel and playing the original data stream and starting to play the first target data stream if key frame first packet data is found in the received first target data stream. The IPTV channel switching method and the IPTV channel switching device of the invention are applicable to various terminals which can use an Internet protocol television.
Description
Technical field
The present invention relates to IPTV(Internet protocol) TV technology, particularly relate to channel switching method and device, the terminal of a kind of IPTV.
Background technology
IPTV(Internet Protocol television, internet protocol TV) be a kind of technology utilizing broadband cable net to provide the multiple interactive services comprising Digital Television to domestic consumer, the technology such as Qi Ji the Internet, multimedia, communication is in one, there is the mutual innate advantage of symmetry of IP network, can by broadcast, multicast, the various ways such as clean culture by program sending to user.User is in and the mode such as general television set, mobile terminal can be coordinated to enjoy IPTV service by computer, network machine top box, selects specific channel to watch program.
When users with channel switches, the linking between the video image of a upper program and the video image being about to broadcasting is often smooth not, and usually occurs the problems such as blank screen, flating, signal interruption, has a strong impact on the experience of user.
A kind of solution of prior art is, retains the last frame of a channel and last piece image when channel switch, until obtain new channel program.Can rest on last width image several seconds when embodiment like this on user awareness is exactly channel switch, just start the program pictures playing new channel, this just causes user to wait for, easily makes people produce boredom, thus reduces Consumer's Experience.
Summary of the invention
The technical problem to be solved in the present invention is to provide channel switching method and device, the terminal of a kind of IPTV, in order to solve picture stagnation or of low quality during prior art mid band switches, the problem of poor user experience.
For solving the problems of the technologies described above, on the one hand, the invention provides the channel switching method of a kind of IPTV, comprising: the channel switching instruction receiving user, in described channel switching instruction, carry first object channel information; According to described channel switching instruction from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously; If find key frame first packet data in the described first object data flow received, stop receiving from described original channel and playing described former data flow, start to play described first object data flow.
Further, after the described channel switching instruction receiving user, and described according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive from original channel and before playing former data flow, described method also comprises: start timing poriotn simultaneously; In the described first object data flow received, key frame first packet data are found if described, stop receiving from described original channel and playing described former data flow, start to play described first object data flow to comprise: if before described timing poriotn time-out, key frame first packet data are found in the described first object data flow received, then stop receiving from described original channel and playing described former data flow, start to play described first object data flow; Described timing poriotn is made to stop timing.
Further, described according to described channel switching instruction from described first object CPCH reception first object data flow, after continuing to receive from described original channel simultaneously and playing described former data flow, described method also comprises: if described timing poriotn is overtime, stops receiving from described original channel and playing described former data flow.
Optionally, described according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive from original channel and play former data flow to comprise: according to described channel switching instruction simultaneously, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously, and continue to receive former data flow by the described session retained.
Optionally, described stopping receives from described original channel and plays described former data flow, start to play described first object data flow to comprise: the session of release terminal and described original channel, stop described former data flow decoding to drive to send, decoding described in described first object data flow is driven and sends.
Further, according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive and after playing former data flow from original channel simultaneously, and to receive from described original channel in described stopping and playing described former data flow, before starting to play described first object data flow, described method also comprises: the channel switching instruction again receiving user, carries the second target channel information in described channel switching instruction; Force to stop receiving from described original channel and playing described former data flow; According to the described channel switching instruction again received, receive the second target data stream from described second target channel, continue from described first object CPCH reception simultaneously and play described first object data flow; If find key frame first packet data in described second target data stream received, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
On the other hand, the present invention also provides the channel switching mechanism of a kind of IPTV, comprising:
Instruction reception unit, for receiving the channel switching instruction of user, carries first object channel information in described channel switching instruction;
Receive and maintain unit, for the described channel switching instruction received according to described instruction reception unit, from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously;
Search unit, for described receive to maintain in the described first object data flow that receives of unit search key frame first packet data;
Play converting unit, if for shown in search unit and find key frame first packet data, stop receiving from original channel and playing former data flow, start to play described first object data flow.
Further, described device, also comprises:
Start by set date unit, for starting timing poriotn; Described broadcasting converting unit, if specifically for before the described timing poriotn time-out of described start by set date unit starting, described unit of searching finds described key frame first packet data, stops receiving from described original channel and playing described former data flow, starts to play described first object data flow; Stopping at fixed time stop element, stops timing specifically for making described timing poriotn.
Further, described broadcasting converting unit also for: if the described timing poriotn time-out of described start by set date unit starting, stop receiving from described original channel and playing described former data flow.
Optionally, described reception maintains unit, specifically for according to described channel switching instruction, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously and continue to receive former data flow by the described session retained.
Optionally, described broadcasting converting unit, specifically for discharging the session of terminal and described original channel, stopping described former data flow decoding to drive to send, sending decoding described in described first object data flow to drive.
Further, described instruction reception unit, also for again receiving the channel switching instruction of user, carries the second target channel information in described channel switching instruction; Described device also comprises pressure stop element, the channel switching instruction also for again receiving according to described instruction reception unit, forces to stop receiving from described original channel and playing described former data flow; Described reception maintains unit, described channel switching instruction also for again receiving according to described instruction reception unit, receive the second target data stream from described second target channel, continue from described first object CPCH reception simultaneously and play described first object data flow; Described broadcasting converting unit, if also for described receive to maintain in described second target data stream that receives of unit find key frame first packet data, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
On the other hand, the present invention also provides a kind of terminal, comprises IPTV channel switching mechanism described in any one provided by the invention.
The channel switching method of the IPTV that the embodiment of the present invention provides and device, terminal, when receiving the channel switching instruction of user, can according to this channel switching instruction, from new channel, i.e. described first object CPCH reception first object data flow, do not stop the reception to the former data flow of old channel, i.e. original channel and broadcasting immediately simultaneously, when finding key frame first packet data in the described first object data flow received, just stop receiving from described original channel and playing described former data flow, and start to play the first object data flow received.Like this, in channel switch procedure, the data flow of original channel and the data flow of target channel parallel receive within a period of time, when the data flow of target channel is also not ready for playing, the program pictures of original channel can also continue to play in high quality, user can also see the program pictures of normal play during channel switch, thus effectively alleviates the boredom easily produced in user's waiting process, effectively improves Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart of the channel switching method of the IPTV that embodiments of the invention provide;
Fig. 2 is a kind of flow chart of the session establishment in the channel switching method of the IPTV that the embodiment of the present invention provides;
Fig. 3 is in the channel switching method of the IPTV that embodiments of the invention provide, a kind of flow chart of data stream reception;
Fig. 4 is a kind of structural representation of the channel switching mechanism of the IPTV that embodiments of the invention provide;
Fig. 5 is the another kind of structural representation of the channel switching mechanism of the IPTV that embodiments of the invention provide.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
When watching IPTV program, people usually run into needs switching channels in program is play, and makes the picture of broadcast window be switched to the situation of target channel by original channel.And because misoperation or user change viewing wish, this channel switch also may frequently occur.For convenience, in following examples, channel definition user watched is original channel, and by first time, the target channel of channel switch is called first object channel, the target channel of second time channel switch is called the second target channel, by that analogy.First object channel and the second target channel etc. are referred to as target channel.
As shown in Figure 1, embodiments of the invention provide the channel switching method of a kind of IPTV, comprise the following steps:
S11, receives the channel switching instruction of user, carries first object channel information in described channel switching instruction;
S12, according to described channel switching instruction, from described first object CPCH reception first object data flow, continues receive from original channel and play former data flow simultaneously;
S13, if find key frame first packet data in the described first object data flow received, stops receiving from described original channel and playing described former data flow, starts to play described first object data flow.
The channel switching method of the IPTV that the embodiment of the present invention provides, when receiving the channel switching instruction of user, can according to this channel switching instruction, from new channel, i.e. described first object CPCH reception first object data flow, do not stop the reception to the former data flow of old channel, i.e. original channel and broadcasting immediately simultaneously, when finding key frame first packet data in the described first object data flow received, just stop receiving from described original channel and playing described former data flow, and start to play the first object data flow received.Like this, in channel switch procedure, the data flow of original channel and the data flow of target channel parallel receive within a period of time, when the data flow of target channel is also not ready for playing, the program pictures of original channel can also continue to play in high quality, user can also see the program pictures of normal play during channel switch, thus effectively alleviates the boredom easily produced in user's waiting process, effectively improves Consumer's Experience.
Concrete, in step s 11, can by inquire about or the mode such as interruption receives message from input equipments such as touch-screen, mouse or keyboards, thus know that new channel (i.e. target channel) that user selects is for information about.After the channel switching instruction receiving user, processor can carry out a series of operation and go to realize to the reception of the former data flow of original channel and broadcasting and to the reception of the target data stream of target channel and broadcasting.The mode received and play can be clean culture, multicast or broadcast, and the present invention does not limit this.When by mode of unicast receive and broadcast program time, need IPTV terminal and server to set up communication protocol separately, when pass through multicast or broadcast mode reception and broadcast program time, need to make IPTV terminal add multicast group or the broadcast group of this program.
It should be noted that, in IPTV, terminal is the process of a circulation continuous from the specific channel receiving data stream of server.Concrete, when being newly switched to a channel, be not all data received are sent to all in order decoder to carry out decoding broadcasting, but first in received data flow, search key frame first packet data, from these key frame first packet data, be sent to decoder play.This is because key frame data comprises the complete information of a two field picture, just can showing image complete and accurate without the need to the data relying on other frames.And non-key frame, because it needs to rely on the data of key frame normally to show image, therefore, when not finding the key frame data of its correspondence, only rely on the image of non-key frame data display to there will be mess code.
In the present embodiment, in channel switch procedure, being that the former data flow of original channel and the first object data streams in parallel of first object channel receive for some time, when finding key frame first packet data in the new first object data flow received, just stopping receiving and playing former data flow.But, the present invention is not limited thereto, in other embodiments of the invention, can also limit the time of the former data flow of parallel receive and first object data flow, within the limited time, if find key frame first packet data in the described first object data flow received, stop receiving from described original channel and playing described former data flow, start to play described first object data flow; On the contrary, if after the time exceeding this restriction, also do not find this key frame first packet data, then directly stop receiving from described original channel and playing described former data flow, thus avoid when first object data stream reception or packet to search etc. there is mistake time, the situation that the former data flow of original channel can receive continuously and play, effectively improves the stability of IPTV terminal system.
Concrete, the above-mentioned restriction to the time can be realized by timing poriotn.Timer is comprised in this timing poriotn.Such as, in one embodiment of the invention, between step S11 and S12, the method can also comprise the step starting timing poriotn.That is, after receiving the channel switching instruction of user, timing poriotn starts countdown.Then, in step S12, according to described channel switching instruction, from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously.Now, step S13 specifically can comprise: if before described timing poriotn time-out, in the described first object data flow received, find key frame first packet data, stop receiving from described original channel and playing described former data flow, start to play described first object data flow; Described timing poriotn is made to stop timing.Can find out, when first object data flow can be received normally and search, the effect of timing poriotn is not remarkable.But in the present embodiment, timing poriotn considers that the situation that first object data flow cannot be received normally and search is arranged, and can improve the stability of data stream reception.That is, after step s 12, described method also can comprise: if described timing poriotn is overtime, stops receiving from described original channel and playing described former data flow.
Concrete, session can be set up by making the specific channel of terminal and server, by data stream reception thread and this session association, realizing from this CPCH reception data flow.Such as, in step s 12, according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive from original channel and play former data flow specifically can comprise: according to described channel switching instruction simultaneously, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously and continue to receive former data flow by the described session retained.
In step s 13, if find key frame first packet data in the described first object data flow received, stop receiving from described original channel and playing described former data flow, start to play described first object data flow specifically can comprise: if find key frame first packet data in the described first object data flow received, then discharge the session of terminal and described original channel, stop described former data flow decoding to drive to send, decoding described in described first object data flow is driven and sends.Like this, decoding drives just to stopped and transfers to play the first object data flow of first object channel to the broadcasting of the former data flow of original channel.
Same, when by timing poriotn to step S12 in receive former data flow carry out the time limit time, if timing poriotn is overtime, also can, by discharging the session of terminal and described original channel, stop described former data flow decoding to drive the reception and broadcasting of sending and stopping former data flow.
If user is when zapping, due to careless manipulation, click a channel by mistake, then recognize mistake again at once, again click correct channel.In this case, if now processor does not also carry out step S12, do not start the data flow receiving the overdue channel hit, then the overdue channel hit before the correct channel again clicked overrides, with the channel again clicked for first object channel execution step below.If now processor has started to perform step S12, namely from described first object CPCH reception first object data flow, continued receive from original channel and play former data flow simultaneously, so, after the step 12, before step S13, described method also can comprise the steps:
Again receive the channel switching instruction of user, in described channel switching instruction, carry the second target channel information;
Force to stop receiving from described original channel and playing described former data flow;
According to the described channel switching instruction again received, receive the second target data stream from described second target channel, continue from described first object CPCH reception simultaneously and play described first object data flow;
If find key frame first packet data in described second target data stream received, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
That is, in the present embodiment, when processor is while reception first object data flow, when receiving again the channel switching instruction of user, processor can stop by force from CPCH reception the earliest and play data stream, saves system resource, thus makes switching channels operation can keep higher efficiency.
With reference to the accompanying drawings, described in detail the channel switching method of the foundation of session and the flow process of release and IPTV provided by the invention by specific embodiment.
About session foundation and release can be described in detail by the flow process shown in Fig. 2.Processor is by safeguarding that several functional modules and corresponding state are the operation determining whether to need to carry out setting up session or releasing session.As shown in Figure 2, session A and session B is the session that terminal is set up from different channels respectively, and wherein, session A is associated with data receiver thread A, and session B is associated with data receiver thread B.This process can comprise the following steps:
Step 201, by checking that corresponding flag bit determines whether session A exists, if exist, then perform step 207, if there is no then perform step 202.
Step 202, set up new session according to the address of carrying in play instruction and port information and add corresponding multicast group, proceeding to step 203.
Step 203, identification data receiving thread A need again to search key frame first packet, are namely set up a flag bit.Proceed to step 204.
Step 204, session A and data receiver thread A is carried out operation associated.Proceed to step 205.
Step 205, be " existence " by the mark position of session A.Proceed to step 206.
Step 206, will the mark position of session of release be needed to be " B ", new channel play instruction handling process terminates.
Step 207, determine whether the session B associated with data receiver thread B exists, if existed, proceed to step 213, if there is no, proceed to step 208.
Step 208, be similar to step 202, proceed to step 209.
Step 209, be similar to step 203, proceed to step 210.
Step 210, be similar to step 204, proceed to step 211.
Step 211, be similar to step 205, proceed to step 212.
Step 212, be similar to step 206, new channel play instruction handling process terminates.
Step 213, judge need release value of statistical indicant whether be one, if so, proceed to step 214, if not, proceed to step 216.
Step 214, by session A and data receiver thread A disassociation relation, proceed to step 215.
Step 215, forcible aborting fall session A.If again receive the channel switching instruction of user, then step 202 can also be proceeded to, newly-built session A.
Step 216, judge whether the flag bit of session needing release is " B ", if so, proceeds to step 217.
Step 217, be similar to step 214.Proceed to step 218.
Step 218, be similar to step 215.If again receive the channel switching instruction of user, then step 215 can also be proceeded to, newly-built session B.
Figure 3 shows that one of the channel switching method of the IPTV that embodiments of the invention provide detailed flow chart.As shown in Figure 3, suppose that this thread is the data flow based on processing target channel, the session that terminal and this target channel are set up is session B, session B is associated with data receiver thread B.And the session that terminal and original channel are set up is session A, session A is associated with data receiver thread A.The method mainly comprises the following steps:
Step 301, interception data, proceed to step 302.
Step 302, judge whether to receive data flow, if do not had, proceed to step 301, if had, proceed to step 303.
Step 303, judge whether to have identified in data receiver thread B first time and find key frame first packet, judge to need whether the value of statistical indicant discharged is A, if two conditions are all satisfied, proceed to step 312, otherwise proceed to step 304.
The audio, video data in step 304, acquisition source, such as, can be obtained by Poll function, proceed to step 305.
Step 305, get the audio, video data bag in source, proceed to step 306.
Step 306, determine whether to need again to search key frame first packet, if do not needed, proceed to step 309, if needed, proceed to step 307.
Step 307, determine whether be first time find key frame first packet, if not, proceed to step 305, if so, proceed to step 308.
Find key frame first packet in step 308, identification data receiving thread A, do not needed again to search key frame first packet, proceed to step 309.
Step 309, issue data flow to driving carry out decoding play, proceed to step 310.
Whether step 310, packet are empty, if be not empty, proceed to step 305, if be empty, proceed to step 304.
Step 311, by session A and data receiver thread A disassociation, proceed to step 312.
Step 312, forcible aborting fall session A, proceed to step 313.
Step 313, session A is set to does not exist, and proceeds to step 301.
Corresponding with the channel switching method of aforesaid IPTV, the present invention also provides the channel switching mechanism of a kind of IPTV, and as shown in Figure 4, this device comprises:
Instruction reception unit 11, for receiving the channel switching instruction of user, carries first object channel information in described channel switching instruction;
Receive and maintain unit 12, for the described channel switching instruction received according to instruction reception unit 11, from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously;
Search unit 13, for described receive to maintain in the described first object data flow that receives of unit 12 search key frame first packet data;
Play converting unit 14, if finding key frame first packet data for searching unit 13, stopping receiving from original channel and playing former data flow, starting to play described first object data flow.
The channel switching mechanism of the IPTV that the embodiment of the present invention provides, when instruction reception unit 11 receives the channel switching instruction of user, receiving maintenance unit 12 can according to this channel switching instruction, from new channel, i.e. described first object CPCH reception first object data flow, do not stop immediately old channel simultaneously, the i.e. reception of the former data flow of original channel and broadcasting, when searching unit 13 and find key frame first packet data in the described first object data flow received, play converting unit 14 just to stop receiving from described original channel and playing described former data flow, and start to play the first object data flow received.Like this, in channel switch procedure, the data flow of original channel and the data flow of target channel parallel receive within a period of time, when the data flow of target channel is also not ready for playing, the program pictures of original channel can also continue to play in high quality, user can also see the program pictures of normal play during channel switch, thus effectively alleviates the boredom easily produced in user's waiting process, effectively improves Consumer's Experience.
In order to strengthen the stability of this device work, preferably, as shown in Figure 5, this device also can comprise:
Start by set date unit 15, for starting timing poriotn;
Play converting unit 14, if specifically for before the described timing poriotn time-out of described start by set date unit 15 startup, search unit 13 and find described key frame first packet data, stop receiving from described original channel and playing described former data flow, start to play described first object data flow;
Stopping at fixed time stop element 16, stops timing for making described timing poriotn.
If play converting unit 14 also for the described timing poriotn time-out that described start by set date unit 15 starts, stop receiving from described original channel and playing described former data flow.
Specifically, session can be set up by making the specific channel of terminal and server, by data stream reception thread and this session association, realizing from this CPCH reception data flow.Receive and maintain unit 12, may be used for according to described channel switching instruction, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously and continue to receive former data flow by the described session retained.Play converting unit 13, specifically may be used for the session discharging terminal and described original channel, stop described former data flow decoding to drive to send, decoding described in described first object data flow is driven and sends.
If user is when zapping, due to careless manipulation, click a channel by mistake, then recognize mistake again at once, again click correct channel.In this case, instruction reception unit 11, also for again receiving the channel switching instruction of user, carries the second target channel information in described channel switching instruction; This device also comprises forces stop element 17, for the channel switching instruction again received according to instruction reception unit 11, forces to stop receiving from described original channel and playing described former data flow.
Receive and maintain unit 12, the described channel switching instruction also for again receiving according to instruction reception unit 11, receives the second target data stream from described second target channel, continues from described first object CPCH reception simultaneously and plays described first object data flow.
Play converting unit 14, if also for finding key frame first packet data receiving to maintain in described second target data stream that receives of unit 12, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
Correspondingly, embodiments of the invention also provide a kind of terminal, this mobile terminal are provided with the channel switching mechanism of any one IPTV that previous embodiment provides, and therefore also can realize corresponding Advantageous Effects, be described in detail above, repeated no more herein.
Although be example object, disclose the preferred embodiments of the present invention, it is also possible for those skilled in the art will recognize various improvement, increase and replacement, and therefore, scope of the present invention should be not limited to above-described embodiment.
Claims (13)
1. a channel switching method of internet protocol TV IPTV, is characterized in that, comprising:
Receive the channel switching instruction of user, in described channel switching instruction, carry first object channel information;
According to described channel switching instruction from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously;
If find key frame first packet data in the described first object data flow received, stop receiving from described original channel and playing described former data flow, start to play described first object data flow.
2. the method for claim 1, it is characterized in that, after the described channel switching instruction receiving user, and described according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive from original channel and before playing former data flow, described method also comprises simultaneously:
Start timing poriotn;
In the described first object data flow received, find key frame first packet data if described, stop receiving from described original channel and playing described former data flow, start to play described first object data flow and comprise:
If before described timing poriotn time-out, in the described first object data flow received, find key frame first packet data, then stop receiving from described original channel and playing described former data flow, start to play described first object data flow;
Described timing poriotn is made to stop timing.
3. method as claimed in claim 2, is characterized in that, described according to described channel switching instruction from described first object CPCH reception first object data flow, after continuing to receive from described original channel simultaneously and playing described former data flow, described method also comprises:
If described timing poriotn time-out, stop receiving from described original channel and playing described former data flow.
4. as claimed any one in claims 1 to 3 method, is characterized in that, described according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive from original channel and play former data flow to comprise simultaneously:
According to described channel switching instruction, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously, and continue to receive former data flow by the described session retained.
5. method as claimed in claim 4, is characterized in that, described stopping receives from described original channel and plays described former data flow, starts to play described first object data flow and comprises:
The session of release terminal and described original channel, stops described former data flow decoding to drive to send, decoding described in described first object data flow is driven and send.
6. the method for claim 1, it is characterized in that, according to described channel switching instruction from described first object CPCH reception first object data flow, continue to receive and after playing former data flow from original channel simultaneously, and to receive from described original channel in described stopping and playing described former data flow, before starting to play described first object data flow, described method also comprises:
Again receive the channel switching instruction of user, in described channel switching instruction, carry the second target channel information;
Force to stop receiving from described original channel and playing described former data flow;
According to the described channel switching instruction again received, receive the second target data stream from described second target channel, continue from described first object CPCH reception simultaneously and play described first object data flow;
If find key frame first packet data in described second target data stream received, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
7. a channel switching mechanism of internet protocol TV IPTV, is characterized in that, comprising:
Instruction reception unit, for receiving the channel switching instruction of user, carries first object channel information in described channel switching instruction;
Receive and maintain unit, for the described channel switching instruction received according to described instruction reception unit, from described first object CPCH reception first object data flow, continue receive from original channel and play former data flow simultaneously;
Search unit, for described receive to maintain in the described first object data flow that receives of unit search key frame first packet data;
Play converting unit, if for shown in search unit and find key frame first packet data, stop receiving from original channel and playing former data flow, start to play described first object data flow.
8. device as claimed in claim 7, is characterized in that, also comprise:
Start by set date unit, for starting timing poriotn;
Described broadcasting converting unit, if for before the described timing poriotn time-out of described start by set date unit starting, described unit of searching finds described key frame first packet data, stops receiving from described original channel and playing described former data flow, starts to play described first object data flow;
Stopping at fixed time stop element, stops timing for making described timing poriotn.
9. device as claimed in claim 8, is characterized in that, described broadcasting converting unit also for:
If the described timing poriotn time-out of described start by set date unit starting, stops receiving from described original channel and playing described former data flow.
10. the device according to any one of claim 7 to 9, it is characterized in that, described reception maintains unit, specifically for according to described channel switching instruction, set up the session of terminal and described first object channel and receive first object data flow by the described session of setting up, retain the session of terminal and described original channel simultaneously and continue to receive former data flow by the described session retained.
11. devices as claimed in claim 10, it is characterized in that, described broadcasting converting unit, specifically for discharging the session of terminal and described original channel, stop described former data flow decoding to drive to send, decoding described in described first object data flow is driven and sends.
12. devices as claimed in claim 7, is characterized in that,
Described instruction reception unit, also for again receiving the channel switching instruction of user, carries the second target channel information in described channel switching instruction;
Described device also comprises pressure stop element, the channel switching instruction also for again receiving according to described instruction reception unit, forces to stop receiving from described original channel and playing described former data flow;
Described reception maintains unit, described channel switching instruction also for again receiving according to described instruction reception unit, receive the second target data stream from described second target channel, continue from described first object CPCH reception simultaneously and play described first object data flow;
Described broadcasting converting unit, if also for described receive to maintain in described second target data stream that receives of unit find key frame first packet data, stop from described first CPCH reception and play described first object data flow, starting to play described second target data stream.
13. 1 kinds of terminals, is characterized in that, comprise the internet protocol TV IPTV channel switching mechanism according to any one of claim 7 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428720.3A CN104469541A (en) | 2013-09-18 | 2013-09-18 | IPTV channel switching method, IPTV channel switching device and terminal |
| PCT/CN2014/079882 WO2014187421A1 (en) | 2013-09-18 | 2014-06-13 | Iptv channel switching method and apparatus and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428720.3A CN104469541A (en) | 2013-09-18 | 2013-09-18 | IPTV channel switching method, IPTV channel switching device and terminal |
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| CN104469541A true CN104469541A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310428720.3A Withdrawn CN104469541A (en) | 2013-09-18 | 2013-09-18 | IPTV channel switching method, IPTV channel switching device and terminal |
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| Country | Link |
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| CN (1) | CN104469541A (en) |
| WO (1) | WO2014187421A1 (en) |
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| CN104768062A (en) * | 2015-04-01 | 2015-07-08 | 上海阅维信息科技有限公司 | Real-time video stream seamless switching method |
| CN105979354A (en) * | 2015-11-30 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | Channel switching method and device |
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| WO2014187421A1 (en) | 2014-11-27 |
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