CN108366283A - The media sync playback method of more equipment rooms - Google Patents
The media sync playback method of more equipment rooms Download PDFInfo
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- CN108366283A CN108366283A CN201810144907.3A CN201810144907A CN108366283A CN 108366283 A CN108366283 A CN 108366283A CN 201810144907 A CN201810144907 A CN 201810144907A CN 108366283 A CN108366283 A CN 108366283A
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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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
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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]
Abstract
The present invention provides a kind of media sync playback method of more equipment rooms, the first equipment is set in multiple playback equipments as initiator, other multiple second equipment are as receiving terminal.When multiple playback equipments completion real-time time corrects and plays media data, by the gap of the real-time time difference of the media time difference and system of the first monitoring of tools media data in the first device plays, when this gap is more than the permissible time, each second equipment is given by the media time of the current media data of the first device broadcasts and the message of real-time time, each second equipment is then using the message received as new starting broadcast point, the reproduction time for adjusting next record media data according to this, to enable each second equipment to keep being played simultaneously for image with the first equipment.The medium synchronization of the present invention is suitable for solving broadcasting error caused by equipment itself or external variation, and need not additionally buy more equipment and can reach the image synchronous broadcasting of each equipment room.
Description
Technical field
The present invention is in relation to a kind of media playing method, espespecially a kind of side carrying out media sync broadcasting between devices
Method.
Background technology
Multiple apparatus for media playing play the same audio/video media simultaneously and have a wide range of applications, such as video wall, advertisement
Wall, displaying wall etc., the splicing that image is carried out using more displays enables the broadcasting of image to break through existing display sizes
Limitation, presented with the broadcasting size of bigger.In this utilization multiple displays splicing broadcasting, (each display only plays audio-visual matchmaker
The local image of body) multiple displays play the same audio/video media (display also sliceable combination or are dispersed in
Different location) field domain in, it is one of technology of most critical to maintain the image synchronous between each display.
In general, being sent to the media data itself that each display plays has media time (media time), and
Each display also has the real-time clock (real-time clock, RTC) or real-time time (RTC of equipment itself
time).When the real-time time of all displays corrected each other and played the media in point (real-time time) at the same time
In data when the data content of the same media time, then each display can generate the result being played simultaneously each other.Instead
It, if some or multiple displays are in the media number for putting played media data content and other displays at the same time
According to content media time difference when, with regard to will produce the nonsynchronous problem of image.And as the matchmaker of any two nonsynchronous displays
The body time difference greatly to a degree when, asynchronous showed image difference i.e. can be discovered by viewer and lose
Multimedia play equipment synchronizes the purpose of broadcasting.
Therefore, it is necessary to a kind of media sync playback method of novel more equipment rooms be designed, to overcome drawbacks described above.
Invention content
The purpose of the present invention is to provide a kind of media sync playback method of more equipment rooms, using inside playback equipment into
The image synchronous that the correction of row media time and real-time time can reach each equipment room plays.
An embodiment according to the present invention proposes a kind of media sync playback method of more equipment rooms, is set in multiple broadcastings
Include the first equipment and multiple second equipment in standby, multiple playback equipment is when playing media data, first equipment tool
Have the first real-time time and play the first media time of the media data, respectively second equipment have the second real-time time with
And the second media time of the media data is played, this method includes:According to first real-time time correct this second it is real-time when
Between;When playing the media data, it is more which by first real-time time and first media time is sent to this
A second equipment;Respectively second equipment according to first real-time time that receives and first media time and this
Second real-time time of two equipment obtains the synchronized multimedia time;And respectively second equipment according to the synchronized multimedia time and
Second media time is synchronized with first equipment to play the media data.
Optionally, correcting second real-time time according to first real-time time includes:By first equipment calibration, this is more
Second real-time time of a second equipment or by respectively second equipment according to first real-time time correct respectively respectively this second
Second real-time time of equipment.
Optionally, multiple second equipment corresponds to identical second real-time time and second media time, or should
Multiple second equipment correspond to different second real-time times and second media time respectively.
Optionally, when playing the media data, when the first media interval of first equipment and the first real-time intervals
When difference is more than preset value, which is sent to multiple second by first real-time time and first media time and sets
It is standby, it is wherein divided into first media time between first media and sends multiple second equipment to the first equipment the last time
Media time interval, it is more which is that first real-time time with the first equipment the last time sends this to
The interval of the real-time time of a second equipment.
Optionally, which adds first matchmaker for the difference of second real-time time and first real-time time
The body time.
Optionally, respectively second equipment is according to the synchronized multimedia time and second media time, with first equipment
It includes step to synchronize to play the media data:Respectively second equipment compares synchronized multimedia time and second equipment
Second media time and according to comparison result execute synchronization action.
Optionally, when the synchronized multimedia time being more than second media time, which is that second equipment is fast
It goes to the synchronized multimedia time and directly plays the matchmaker of the synchronized multimedia time to play the media data or second equipment
Volume data.
Optionally, when the synchronized multimedia time being less than second media time, which is that second equipment is fallen
It goes to the synchronized multimedia time and directly plays the matchmaker of the synchronized multimedia time to play the media data or second equipment
Volume data.
Optionally, which is image data, and this method also includes step:First equipment is directed to the media data
It is synchronous with sound to carry out image.
Optionally, multiple second equipment is directly wirelessly connected in first equipment or first equipment and multiple
Two equipment are connected with each other by radio access device.
Medium synchronization provided by the present invention utilizes the school that media time and real-time time are carried out inside playback equipment
Just, the erection and broadcasting for simplifying multiple devices, it is suitable for solving the broadcasting error caused by equipment itself or external variation,
It is used in combination minimum wireless package number of broadcast times to reach expected and plays efficiency, need not additionally buy more equipment to participate in being played simultaneously
Timing control, can wirelessly reach each equipment room image synchronous play, have set up on simply with elastic advantage.
Description of the drawings
Fig. 1 is a kind of function block schematic diagram of solid object scanning means of the present invention.
Fig. 2 is the schematic diagram of the playback equipment broadcasting media data in media play system.
Fig. 3 is the flow chart of the media sync playback method of more equipment rooms provided by the present invention.
Specific implementation mode
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby coordinate embodiment detailed
It is described as follows.
Some vocabulary has been used in specification and subsequent claim to censure specific element.Affiliated neck
The technical staff in domain is, it is to be appreciated that manufacturer may call the same element with different nouns.This specification and follow-up
Claim not by the difference of title be used as distinguish element in a manner of, but with the difference of element functionally come
Criterion as differentiation.It is an open term in the "comprising" of specification in the whole text and subsequent right item mentioned in,
Therefore it should be construed to " including but not limited to ".In addition, " coupling " or " connection " word includes any directly and indirectly electric herein
Gas or structure connection means.Therefore, if it is described herein that first device couples/be connected to second device, then the first device is represented
Directly electrical/structure it can be connected to the second device, or electrical/structure is connected to indirectly by other devices or connection means
The second device.
Referring to FIG. 1, Fig. 1, which is the present invention, can carry out a kind of media used in the media sync playback method of more equipment rooms
The schematic diagram of play system.Media play system 10 is made of multiple playback equipments (or adding radio access device 3), multiple
Playback equipment contains the first equipment 1 and multiple second equipment 2, and in an embodiment, multiple second equipment 2 directly wirelessly connect
It is connected to the first equipment 1, and in another embodiment, the first equipment 1 and multiple second equipment 2 can also pass through radio access
Device 3 is connected with each other.Media play system 10 can be played simultaneously on multiple playback equipments to be contained only image or includes simultaneously shadow
As and sound multimedia content, wherein the first equipment 1 is set as initiator (broacaster), and by other multiple second
Equipment 2 is set as receiving terminal (receiver).Media sync playback method provided by the present invention can be used for such as video wall, advertisement
Intelligence escope or general display can be used in the media play system 10 of the large-scale splicings such as wall, displaying wall or multi-display
Device collocation intelligent set-top box is as the playback equipment in media play system 10 to carry out precise synchronization sound and image.
The schematic diagram of media data is please played for the playback equipment in media play system referring to Fig. 2, Fig. 2.Media
Data 100, which can be stored in the first equipment 1 and play and be transmitted to the second equipment 2, (to be illustrated to simplify, is set merely with one second in Fig. 2
Standby 2 illustrate) or by other media hosts (figure is not shown) by wired or wireless (such as by the radio access device 3 in Fig. 1
Or high in the clouds platform 4) transmission mode be transmitted to the first equipment 1 and the second equipment 2 respectively with synchronize play.First equipment 1
And multiple second equipment, 2 real-time times (RTC time) of itself are indicated with stain Tm, Tn, Tr ... respectively, and each real-time
Media time (media time) corresponding to the media data content that time is played is then respectively with Mm, Mn, Mr ... expression, example
Such as, the first equipment has the first real-time time and plays the first media time of media data, and multiple second equipment have the
Two real-time times and the second media time for playing media data.When real-time between the first equipment 1 and multiple second equipment 2
Time corrected each other and the same real-time time play the same media time in the media data data content (or
The data content of media time in permissible error time) when, then all playback equipments can generate same each other
Walk the result played.
Referring to FIG. 3, Fig. 3 is the flow chart of the media sync playback method 200 of more equipment rooms provided by the present invention,
Steps are as follows:
Step 210:Media play system is set;
Step 220:Correct the real-time time of multiple playback equipments;
Step 230:Playback equipment starts to play media data in real-time time point;
Step 240:The gap at the first device real-time monitoring the first media interval and the first real-time intervals, and be more than in gap
When preset value, the first real-time time and the first media time are sent to multiple second equipment;
Step 250:Multiple second equipment generates the synchronized multimedia time;
Step 260:Compare synchronized multimedia time and the second media time, and is synchronized according to this to play the media number
According to.
Please referring to Fig. 1 and Fig. 2.At one in the media play system 10 with multiple playback equipments, Mei Gebo
It puts equipment and all has the system time or real-time time of itself, therefore in step 210, media play system is first arranged in the present invention
10, the specific practice may include:In multiple playback equipments of media play system 10, one of playback equipment is set as first
Equipment 1 is used as initiator, and remaining playback equipment is used as receiving terminal for the second equipment 2, and the first equipment 1 is directed to and is intended to broadcast
It is synchronous with sound that the media data 100 put carries out image.It illustrates, for the matchmaker simultaneously with sound and image
Volume data 100, in an embodiment, the sound of media data 100 (or is connected to the dress of raising one's voice of the first equipment 1 by the first equipment 1
Set) it is exported, and the document-video in-pace of media data 100 in the first equipment 1 by the first equipment 1 then in being completed.
Then the real-time time of each playback equipment is corrected in a step 220 with synchronized with each other, such as the first equipment 1 has the
One real-time time RTC1, multiple second equipment 2 are respectively provided with the second real-time time RTC2, and according to the first real-time time RTC1
Correct the second real-time time RTC2.In an embodiment, after all playback equipments can be allowed all to connect radio access device 3, by
One equipment 1 periodically sends out correction instruction to correct second real-time time of each second equipment 2 (i.e. each second equipment 2)
RTC2, and in another embodiment, the wireless sharing function of itself can be also opened by the first equipment 1, and each second equipment 2 is allowed to connect
After first equipment 1, real-time time is carried out by each second equipment 2 and is corrected automatically, to be corrected respectively according to the first real-time time RTC1
The second real-time time RTC2 in second equipment 2.In addition it is noted that multiple second equipment 2 all use same the herein
Two real-time time RTC2 be in order to be separated with the first real-time time RTC1 of the first equipment 1, before carrying out step 220,
Multiple second equipment 2 may make respective second real-time time RTC2 all differ because of various factors.In other words, multiple
Second equipment 2 can be corresponding identical second real-time time RTC2;Can also be multiple second equipment 2 correspond to respectively it is different
Second real-time time RTC2, invention is not limited thereto, need to only meet each second equipment 2 according to the first real-time time
RTC1 corrects the second real-time time RTC2 of itself.
After the real-time time of all playback equipments is all synchronous, then in step 230, the transmission of the first equipment 1 starts
The real-time time point of media data 100 is played, and all playback equipments all start to play matchmaker in the common real-time time point
Volume data 100.It is hard due to each playback equipment when the first equipment 1 and multiple second equipment 2 are when playing media data 100
The difference of part processing capacity and respective hardware environment so that both media time and real-time time inside playback equipment
Between start to generate gap, and gap caused by each playback equipment also differs.And when the media time and reality of the first equipment 1
When the time between gap it is excessive when, mean that media data 100 in the first equipment 1 plays that too fast (media time carries out
It is faster than real-time time) or slow (media time carries out slower than real-time time) was played, it needs to coordinate other at this time and second sets
Standby 2 carry out the correction of 100 broadcasting content of media data.
In step 240, the first equipment 1 can monitor the first media interval and first in the first equipment 1 in real time in real time
The gap Δ at interval, the first media interval herein are defined as the first equipment 1 in monitoring the first media time Mn instantly and the
1 the last time of one equipment sends the interval (Mn-Mm) of the media time Mm of multiple second equipment 2 to, and the first real-time intervals are fixed
Justice is that the first equipment 1 sends multiple second equipment 2 in monitoring the first real-time time Tn instantly and 1 the last time of the first equipment
Real-time time Tm interval (Tn-Tm), and gap Δ=(Mn-Mm)-(Tn-Tm).The last time above-mentioned sends to
The media time Mm and real-time time Tm of two equipment 2 illustrate that last first equipment 1 and the second equipment 2 are synchronous regime each other
Time (after this time point the media time of each playback equipment with respectively different speed carries out and start in real time
Time carries out generation gap), and first media time Mm and real-time time Tm is the first equipment 1 in step 230
Transmission starts to play the media time Mm and real-time time Tm of the real-time time point of media data 100.
In addition illustrate, in an embodiment, the inside that the variation of gap Δ generally depends on the first equipment 1 itself is soft
Hardware or external environment, and the first equipment 1 plays the part of document-video in-pace and can also influence the variation width of gap Δ with the role for playing sound
Degree.
In an embodiment, when gap Δ be more than preset value, such as 16 milliseconds (if media data 100 be 60fps broadcasting
Format, then 16 milliseconds are the time for playing a frame frame) when, the first equipment 1 is the first real-time time monitoring instantly
Tn and the first media time Mn are respectively sent to each second equipment 2, that is to say, that the first equipment 1 can broadcast currently playing progress
Media message give other second equipment 2, to be corrected by the second equipment 2.
For example, each second equipment 2 also respectively has the second media time Mn ' (another when playing media data 100
Outside, once synchronous with the first equipment 1 before the media time Mm ' of a certain second equipment 2 in fig. 2 namely second equipment 2
The media time played after correction), when a certain second equipment 2 in real-time time Tp (be later than the first real-time time Tn and earlier than
Second real-time time Tr) receive the correction data (i.e. the first real-time time Tn and the first media time Mn) that the first equipment 1 transmits
When, that is, generate should play in the second current real-time time Tr 100 content of media data (should it is identical as the first equipment 1 and
Be able to synchronous with the first equipment 1) possessed by synchronized multimedia time Ms, wherein synchronized multimedia time Ms be the second real-time time Tr
And the difference of the first real-time time Tn received adds the first media time Mn received, that is, Ms=Mn+ (Tr-Tn).Namely
After saying that each second equipment 2 obtains the message that the first equipment 1 transmits, it is considered as new starting play time, adjusts media data 100
The reproduction time of next record content.Similarly, multiple second equipment 2 can be corresponding identical second media time Mn ';Also may be used
To be that multiple second equipment 2 correspond to the second different media time Mn ' respectively, invention is not limited thereto.
Then each second equipment 2 according to the synchronized multimedia time Ms and each second equipment, 2 script obtained current
Second real-time time Tr the second media time Mr ' to be played are compared, and corresponding same according to comparison result execution
Step action to be synchronized with the first equipment 1 plays media data 100, such as step 260, wherein in an embodiment, and each the
Two equipment, 2 script can store in the content practice of the second current real-time time Tr the second media time Mr ' to be played
It waits for and being played in the buffering area in each second equipment 2.For example, when synchronized multimedia time Ms is more than the second media time
When Mr ', indicate that the broadcasting speed of the first equipment 1 is faster than a certain second equipment 2, therefore the synchronization action that second equipment 2 executes
Can go to synchronized multimedia time Ms soon with the content for playing media data 100 or direct redirect broadcasting synchronized multimedia time
The content (abandoning data content out-of-date in buffering area) of the media data 100 of Ms.When synchronized multimedia time Ms is less than second
When media time Mr ', indicate that the broadcasting speed of the first equipment 1 is slower than a certain second equipment 2, therefore second equipment 2 execution
Synchronization action can reverse to synchronized multimedia time Ms to synchronize with the content or direct redirect broadcasting that play media data 100
The content of the media data 100 of media time Ms.
The present invention can repeat to hold after some time point completes image synchronous of first equipment 1 with each second equipment 2
Row step 240~260 so that when the broadcasting speed of the first equipment 1 is too fast or excessively slow, that is, carry out the present invention in it is same step by step
Suddenly, the first equipment 1 and other second equipment 2 is made to be maintained at the state of image synchronous at any time.
The media sync playback method of more equipment rooms provided by the present invention sets one first in multiple playback equipments
Equipment is as initiator, and other multiple second equipment are as receiving terminal.Real-time time correction is completed in multiple playback equipments simultaneously
When playing media data, by the reality of the media time difference and system of the first monitoring of tools media data in the first device plays
When the time difference gap, when this gap be more than the permissible time when, by the media of the current media data of the first device broadcasts
The message of time and real-time time gives each second equipment, each second equipment then to be played the message received as new starting
Point adjusts the reproduction time of next record media data according to this, to enable each second equipment to keep the same of image with the first equipment
Step plays.Medium synchronization provided by the present invention utilizes the school that media time and real-time time are carried out inside playback equipment
Just, the erection and broadcasting for simplifying multiple devices, it is suitable for solving the broadcasting error caused by equipment itself or external variation,
It is used in combination minimum wireless package number of broadcast times to reach expected and plays efficiency, need not additionally buy more equipment to participate in being played simultaneously
Timing control, can wirelessly reach each equipment room image synchronous play, have set up on simply with elastic advantage.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only the example for implementing the present invention.
It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from the present invention spirit and
It is changed and retouched made by range, belongs to the scope of patent protection of the present invention.
Claims (10)
1. a kind of media sync playback method of more equipment rooms, which is characterized in that comprising the first equipment in multiple playback equipments
And multiple second equipment, multiple playback equipment when playing media data, first equipment have the first real-time time with
And the first media time of the media data is played, respectively second equipment has the second real-time time and plays the media data
The second media time, this method includes:
Second real-time time is corrected according to first real-time time;
When playing the media data, it is more which by first real-time time and first media time is sent to this
A second equipment;
Respectively second equipment is according to first real-time time and first media time and second equipment received
Second real-time time obtains the synchronized multimedia time;And
Respectively second equipment is synchronized with first equipment to broadcast according to the synchronized multimedia time and second media time
Put the media data.
2. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that according to this first it is real-time when
Between correct second real-time time and include:By second real-time time of multiple second equipment of first equipment calibration or by each
Second equipment corrects second real-time time of respectively second equipment according to first real-time time respectively.
3. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that multiple second equipment pair
Identical second real-time time and second media time or multiple second equipment is answered to correspond to different this second respectively
Real-time time and second media time.
4. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that in the broadcasting media data
When, when the difference of the first media interval of first equipment and the first real-time intervals is more than preset value, first equipment by this
One real-time time and first media time are sent to multiple second equipment, are wherein divided into first matchmaker between first media
The body time sends the interval of the media time of multiple second equipment, first real-time intervals to the first equipment the last time
Send the interval of the real-time time of multiple second equipment to for first real-time time and the first equipment the last time.
5. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that the synchronized multimedia time is
The difference of second real-time time and first real-time time adds first media time.
6. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that respectively the second equipment foundation
The synchronized multimedia time and second media time, it includes step to be synchronized with first equipment to play the media data
Suddenly:Respectively second equipment compares second media time of synchronized multimedia time and second equipment and according to comparison result
Execute synchronization action.
7. the media sync playback method of more equipment rooms as claimed in claim 6, which is characterized in that when the synchronized multimedia time
When more than second media time, which is that second equipment goes to the synchronized multimedia time to play the media number soon
According to or second equipment directly play the media data of the synchronized multimedia time.
8. the media sync playback method of more equipment rooms as claimed in claim 6, which is characterized in that when the synchronized multimedia time
When less than second media time, which is that second equipment is reversed to the synchronized multimedia time to play the media number
According to or second equipment directly play the media data of the synchronized multimedia time.
9. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that the media data is image
Data, this method also include step:First equipment is synchronous with sound for media data progress image.
10. the media sync playback method of more equipment rooms as described in claim 1, which is characterized in that multiple second equipment
It is directly wirelessly connected and passes through radio access device phase each other in first equipment or first equipment and multiple second equipment
Even.
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