CN104301775A - Method for determining time migration between different program sources - Google Patents
Method for determining time migration between different program sources Download PDFInfo
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- CN104301775A CN104301775A CN201410507821.4A CN201410507821A CN104301775A CN 104301775 A CN104301775 A CN 104301775A CN 201410507821 A CN201410507821 A CN 201410507821A CN 104301775 A CN104301775 A CN 104301775A
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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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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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 MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The invention discloses a method for determining time migration between different program sources. According to the method, a program stream with the shortest duration serves as a reference program stream, samples are taken from set time periods of the reference program stream and other program stream to obtain multiple time slices with the same length, audio/video separation is conducted on the time slices to obtain audio waveforms and video images, similarity match is conducted between the audio waveform of each time slice of the reference program stream and the audio waveform of each time slice of other program streams firstly, if the similarity obtained each time reaches a preset threshold value, image match is conducted between the video image of each time slice of the reference program stream and the video image of each time slice of other program streams, and if image match succeeds, the migration amount of the time start of a set time period of other program streams relative to the time start of a set time period of the reference program stream is recorded. By the adoption of the method, time migration between different program sources can be determined, so that connection play is achieved when a user conducts switching between different program sources.
Description
Technical field
The present invention relates to TV domain, especially a kind of method confirming time migration between different program source.
Background technology
At present, TV is towards networking and intelligent development, and Just because of this, TV is as the convergent point of program, and same TV programme also exists multiple different program source.When user needs to watch a program, a program source can be selected arbitrarily to play this program.Usual user, after switching program source, wishes that program continues to play from the time point play, namely realizes break-point continuous playing.
But because each program source is provided by different content suppliers usually, even therefore same program, the playing duration of each program source is also not quite similar.If playing duration is inconsistent, so at the same time, the programme content that different program source is play is just inconsistent, even if this playing with regard to causing from the time point play, also cannot realize break-point continuous playing, bringing puzzlement on the contrary to user.
Summary of the invention
Technical problem to be solved by this invention is: for above-mentioned Problems existing, provides a kind of method confirming time migration between different program source, can confirm time migration between different program source, makes user realize break-point continuous playing when switching different program source.
The technical solution used in the present invention is: provide a kind of method confirming time migration between different program source, comprise: mobile terminal and TV connect, and obtain program from described TV and multiple program source of this program are provided, wherein, described program encodes is program stream by each program source; The duration of the program stream that described acquisition for mobile terminal is different, and using program stream the shortest for duration as reference program stream, and in the setting-up time fragment of the program stream of each program source sampling obtain the identical multiple isochronous surfaces of sample length, and to described isochronous surface carry out audio frequency and video be separated obtain audio volume control and video image; The audio volume control of described each isochronous surface with reference to program stream is carried out similarity mode with the audio volume control of each isochronous surface of other program stream according to sampling order by described mobile terminal respectively; If mate the similarity obtained all reach predetermined threshold at every turn, the video image of described each isochronous surface with reference to program stream is carried out images match with the video image of each isochronous surface of other program stream according to sampling order by described mobile terminal respectively; If images match success, the start time recording the setting-up time fragment of other program stream, relative to the side-play amount of the start time of the described setting-up time fragment with reference to program stream, switches when program source plays described program to make user and realizes break-point continuous playing.
Preferably, each program source adopts identical coded system to be program stream by described program encodes.
Preferably, the quantity of sampling quantity of the isochronous surface in described setting-up time fragment is 10, and the sample length of each isochronous surface is 2 seconds.
Preferably, the length of the setting-up time fragment of each program stream is equal, and the start time of described setting-up time fragment is the start time of described program stream.
Preferably, if mate the similarity obtained at least one times do not reach described predetermined threshold, then the start time of the setting-up time fragment of the program stream of other program source is moved scheduled duration backward.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: the present invention carries out audio frequency and video separation by obtaining to the isochronous surface of each program stream, after the audio volume control of each program stream and the audio volume control with reference to program stream are carried out similarity mode, again the video image of each program stream and the video image with reference to program stream are carried out images match, thus record the side-play amount of start time relative to the start time of the setting-up time fragment with reference to program stream of the setting-up time fragment of other program stream, thus the time migration between different program source can be confirmed, user is made to realize break-point continuous playing when switching different program source, for break-point continuous playing provides accurate reference, make break-point continuous playing more accurate.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Between the different program source of confirmation of the present invention, the method for time migration comprises: mobile terminal and TV connect, and obtains program from TV and provide multiple program source of this program, and wherein, program encodes is program stream by each program source; The duration of the program stream that acquisition for mobile terminal is different, and using program stream the shortest for duration as reference program stream, and in the setting-up time fragment of the program stream of each program source sampling obtain the identical multiple isochronous surfaces of sample length, and to isochronous surface carry out audio frequency and video be separated obtain audio volume control and video image; Mobile terminal carries out similarity mode with the audio volume control of each isochronous surface of other program stream with reference to the audio volume control of each isochronous surface of program stream respectively according to sampling order; If mate the similarity obtained all reach predetermined threshold at every turn, mobile terminal carries out images match with the video image of each isochronous surface of other program stream with reference to the video image of each isochronous surface of program stream respectively according to sampling order; If images match success, the start time recording the setting-up time fragment of other program stream, relative to the side-play amount of the start time of the setting-up time fragment with reference to program stream, realizes break-point continuous playing when switching program source broadcast program to make user.
Program stream is through the encoding stream of program source coding, and mobile terminal carries out to program stream the isochronous surface that can obtain in setting-up time fragment of decoding.Also more accurate owing to being carried out the higher result of similarity mode efficiency by audio volume control, so first carry out similarity mode by audio volume control, can determine by similarity mode the approximate time that the isochronous surface of other program stream mates with the isochronous surface with reference to program stream.If mate the similarity obtained all reach predetermined threshold, the concrete time of so just carrying out images match to determine at every turn.
Embodiment
In the method for time migration between the different program source of confirmation of the present embodiment, TV and mobile terminal are connected by WIFI (Wireless Fidelity, wireless network).
Step 1, after mobile terminal is connected by WIFI with TV, the program on TV can be converged, browse for user, multiple program source of each program can be presented when converging program in the lump, from multiple program source, selecting program source to play the program of user's expectation for user.
Step 2, because program encodes is program stream by each program source, after each program stream of acquisition for mobile terminal, decodes, and in the setting-up time fragment of the program stream of each program source, sampling obtains the identical multiple isochronous surfaces of sample length.After obtaining isochronous surface, audio frequency and video separation is carried out to all isochronous surfaces and obtains audio volume control and video image.Wherein, each program source can adopt identical coded system to be program stream by program encodes, and so mobile terminal only need adopt a kind of decoding process and all program stream of decodable code.Certainly, different program source can adopt different coded systems to be program stream by program encodes, and mobile terminal also can adopt different decoding processes decoded program stream respectively.In the present embodiment, the quantity of sampling quantity of the isochronous surface in setting-up time fragment is 10, and the sample length of each isochronous surface is 2 seconds, the length of the setting-up time fragment of each program stream is equal, and the start time of setting-up time fragment is the start time of program stream.Preferably, the length of setting-up time fragment is 3 minutes.
Step 3, mobile terminal carries out similarity mode with the audio volume control of each isochronous surface of other program stream with reference to the audio volume control of each isochronous surface of program stream respectively according to sampling order.Due to each program stream sampling obtain 10 isochronous surfaces, so with reference to program stream 10 isochronous surfaces according to sampling order successively respectively 10 isochronous surfaces of other program stream carry out the similarity mode of audio volume control.If mate the similarity obtained for 10 times all reach predetermined threshold, just think that Audio Matching is successful.Similarity is relevant to the waveform of audio volume control, if waveform is more close, even if the amplitude of waveform is not identical, also thinks that similarity is higher.Here similarity can be quantized.By the similarity mode of audio volume control, the approximate time section with reference to program stream and other program stream time synchronized can be determined.
Step 4, after Audio Matching success, mobile terminal carries out images match with the video image of each isochronous surface of other program stream with reference to the video image of each isochronous surface of program stream respectively according to sampling order.Due to each program stream sampling obtain 10 isochronous surfaces, so with reference to program stream 10 isochronous surfaces according to sampling order successively respectively 10 isochronous surfaces of other program stream carry out the images match of video image.The algorithm of images match can adopt classical sift algorithm, sciagraphy, characteristic method etc. efficiently.After images match success, just can determine concrete time point in approximate time section.
Step 5, images match success, the start time of the setting-up time fragment of other program stream of mobile terminal records is relative to the side-play amount of the start time of the setting-up time fragment with reference to program stream.The side-play amount of setting-up time fragment i.e. the side-play amount of program stream.For example, with reference within the 1st minute of program stream, being only synchronous time point with the 4th minute of certain program stream A, so program stream A is 3 minutes relative to the side-play amount with reference to program stream.With reference within the 2nd minute of program stream, being only synchronous time point with the 1st minute of certain program stream B, so program stream B is-1 minute relative to the side-play amount with reference to program stream.Suppose that user is switched to program stream A on the 10th minute at program stream B, then program stream B is-5 minutes relative to the side-play amount of program stream A, so by according to the down times (the 10th minute) of program stream B and side-play amount-5 minutes, adjustment program stream A started to the 15th minute to play, thus realized break-point continuous playing when making user switch program source broadcast program.
Step 6, if the similarity that the coupling of audio volume control obtains at least one times does not reach predetermined threshold, then moves scheduled duration backward by the start time of the setting-up time fragment of the program stream of other program source, and re-starts step 2 to step 3.It is 3 minutes that the present embodiment arranges scheduled duration, start time then with reference to the setting-up time fragment of program stream is constant, the start time of the setting-up time fragment of other program stream mobile three minutes backward, that is, the time span of the setting-up time fragment of other program stream is constant, but start time changes.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (5)
1. confirm a method for time migration between different program source, it is characterized in that, comprising:
Mobile terminal and TV connect, and obtain program from described TV and provide multiple program source of this program, and wherein, described program encodes is program stream by each program source;
The duration of the program stream that described acquisition for mobile terminal is different, and using program stream the shortest for duration as reference program stream, and in the setting-up time fragment of the program stream of each program source sampling obtain the identical multiple isochronous surfaces of sample length, and to described isochronous surface carry out audio frequency and video be separated obtain audio volume control and video image;
The audio volume control of described each isochronous surface with reference to program stream is carried out similarity mode with the audio volume control of each isochronous surface of other program stream according to sampling order by described mobile terminal respectively;
If mate the similarity obtained all reach predetermined threshold at every turn, the video image of described each isochronous surface with reference to program stream is carried out images match with the video image of each isochronous surface of other program stream according to sampling order by described mobile terminal respectively;
If images match success, the start time recording the setting-up time fragment of other program stream, relative to the side-play amount of the start time of the described setting-up time fragment with reference to program stream, switches when program source plays described program to make user and realizes break-point continuous playing.
2. method according to claim 1, is characterized in that, each program source adopts identical coded system to be program stream by described program encodes.
3. method according to claim 1, is characterized in that, the quantity of sampling quantity of the isochronous surface in described setting-up time fragment is 10, and the sample length of each isochronous surface is 2 seconds.
4. method according to claim 1, is characterized in that, the length of the setting-up time fragment of each program stream is equal, and the start time of described setting-up time fragment is the start time of described program stream.
5. method according to claim 4, is characterized in that, described method also comprises:
If mate the similarity obtained at least one times do not reach described predetermined threshold, then the start time of the setting-up time fragment of the program stream of other program source is moved scheduled duration backward.
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| CN201410507821.4A CN104301775B (en) | 2014-09-28 | 2014-09-28 | Confirm the method for time migration between different program sources |
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Cited By (1)
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| CN108769559A (en) * | 2018-05-25 | 2018-11-06 | 数据堂（北京）科技股份有限公司 | The synchronous method and device of multimedia file |
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| CN104301775B (en) | 2017-12-15 |
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