CN104079957A - Multimedia device synchronous operation method and system - Google Patents
Multimedia device synchronous operation method and system Download PDFInfo
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- CN104079957A CN104079957A CN201410294339.7A CN201410294339A CN104079957A CN 104079957 A CN104079957 A CN 104079957A CN 201410294339 A CN201410294339 A CN 201410294339A CN 104079957 A CN104079957 A CN 104079957A
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Abstract
The invention is applicable to the technical field of media devices, and provides a multimedia device synchronous operation method and system. The method is applied to a media system which is composed of at least one source media device and at least one target media device. The method includes the steps that the source media device sends a data packet to be executed to the target media device, wherein the data packet to be executed includes execution time information of the data packet to be executed; the target media device receives the data packet to be executed so as to obtain the execution time information of the data packet to be executed; the source media device and the target media device synchronously execute the data packet to be executed according to the execution time information. By means of the method and system, floating of network loads and delayed time which are caused when the media devices exceedingly transmit the specific synchronous data packet during time synchronization can be effectively relieved, and therefore accuracy is enhanced when the media devices synchronously play media data or execute an operation instruction.
Description
Technical field
The invention belongs to media device technical field, relate in particular to a kind of method and system of multimedia equipment simultaneous operation.
Background technology
Along with the development of the communication technology, a lot of equipment in life have all used network to communicate alternately, such as intelligentized multimedia system etc.While communicating between multimedia equipment, because the uncertain factor in Internet Transmission can have influence on the network bandwidth, the network-induced delay that the transmitting-receiving of packet produces is different, and this has just had influence on synchronous broadcasting and simultaneous operation between multimedia equipment.For this problem, in prior art, substantially adopt the time difference of carrying out real-time computing medium equipment room transfer of data between multimedia equipment by the specific synchronization packets of intermittent transmission, i.e. time of delay.In the time that multimedia equipment is synchronously play, with proofreading and correct reproduction time this time of delay, and then realize synchronous broadcasting.
But because the time delay of network is not constant value, when the data volume transmitted in network is larger, the size of time of delay can produce larger floating, also will increase by the error of proofreading and correct reproduction time this time of delay.So need between multimedia equipment, to send more continually synchronization packets to carry out the correction of reproduction time, increased again on the contrary the load of network, synchronous error is increased.
Summary of the invention
The object of the present invention is to provide a kind of method and system of multimedia equipment simultaneous operation, to alleviate floating of the offered load that causes when media device carries out time synchronized by the specific synchronization packets of intermittent transmission and time of delay, strengthen media device and synchronously play the accuracy of media data or executable operations instruction.
The present invention is achieved in that a kind of method of multimedia equipment simultaneous operation, is applied to the media system that comprises at least one source media device, at least one target medium equipment composition, and described method comprises:
Source media device sends pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet;
Target medium equipment receives described pending packet, and therefrom obtains the time of implementation information of described pending packet;
Source media device and target medium equipment are according to the described pending packet of the synchronous execution of described time of implementation information.
Further, described pending packet comprises media data to be played or on-unit instruction;
Described source media device and target medium equipment are specially according to the described pending packet of the synchronous execution of described time of implementation information:
Source media device and target medium equipment are according to the synchronous described media data to be played of described time of implementation information or described pending operational order.
Further, described time of implementation information is a default tolerance, the transmitting time that described tolerance is described pending packet and the difference of expection time of implementation;
Described source media device and target medium equipment are specially according to the described pending packet of the synchronous execution of described time of implementation information:
Described source media device and target medium equipment calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, carry out described pending packet in the time arriving the described expection time of implementation.
Further, described system also comprises a media device that clock information is provided, and described method, before source media device sends pending packet to target medium equipment, also comprises:
Described source media device or target medium equipment are from providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
A second aspect of the present invention, provides a kind of system of multimedia equipment simultaneous operation, and described system comprises: at least one source media device, at least one target medium equipment;
Described source media device, for sending pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet; And according to pending packet described in described time of implementation information and executing.
Described target medium equipment, for receiving described pending packet, and therefrom obtains the time of implementation information of described pending packet; According to pending packet described in described time of implementation information and executing.
Further, described pending packet comprises media data to be played or on-unit instruction;
Described source media device and target medium equipment specifically for:
According to the synchronous described media data to be played of described time of implementation information or described pending operational order.
Further, described time of implementation information is a default tolerance; Described tolerance is the transmitting time of described pending packet and the difference of expection time of implementation;
Described source media device and target medium equipment specifically for:
Calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, in the time arriving the described expection time of implementation, carry out described pending packet.
Further, described system also comprises a media device that clock information is provided, described source media device or target medium equipment also for:
From providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
The beneficial effect that the embodiment of the present invention compared with prior art exists is: the embodiment of the present invention is added the time of implementation information of pending packet in pending packet to, target medium equipment is being received after the described pending packet that adds time of implementation information, can synchronize with source media device according to described time of implementation information realization and carry out described pending packet, strengthen media device and synchronously play the accuracy of media data or executable operations instruction, and effectively alleviate media device carrying out when synchronous owing to exceedingly transmitting floating of offered load that specific synchronization packets causes and time of delay.
Brief description of the drawings
Fig. 1 is the composition structure chart of the multimedia equipment synchronously operating system that provides of the embodiment of the present invention one;
Fig. 2 is the first realization flow figure of the multimedia equipment simultaneous operation method that provides of the embodiment of the present invention two;
Fig. 3 is the second realization flow figure of the multimedia equipment simultaneous operation method that provides of the embodiment of the present invention three;
Fig. 4 is the mutual schematic diagram between three main medium equipment in the multimedia equipment simultaneous operation method that provides of the embodiment of the present invention three;
Fig. 5 is the composition structure chart of the multimedia equipment that provides of the embodiment of the present invention four.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention is added the time of implementation information of pending packet in pending packet to, target medium equipment is being received after the described pending packet that adds time of implementation information, synchronize with source media device according to described time of implementation information realization and carry out described pending packet, strengthen media device and synchronously play the accuracy of media data or executable operations instruction, effectively alleviated media device carrying out when synchronous owing to exceedingly transmitting floating of offered load that specific synchronization packets causes and time of delay.
embodiment mono-
Fig. 1 shows the composition structure of the system of the multimedia equipment simultaneous operation that the embodiment of the present invention one provides, and for convenience of explanation, only shows the part relevant to the present embodiment.
As shown in Figure 1, this system comprises at least three media devices, and the target medium equipment of media data sending for reception sources media device for the source media device 1 from operational order to other media devices, that send media datas or or operational order 2, one are for providing the media device 3 of clock information.
It should be noted that, described source media device 1, target medium equipment 2 and media device 3 that clock information is provided are just comparatively speaking, a media device can be both source media device, can be also target medium equipment, was decided by the current performed function of this media device.Concrete, in the time that this media device will send media data or operational order to other media devices, it is source media device; When this media device is the media data that sends of reception sources media device or when operational order, it is target medium equipment.Certainly, also can specify one of them media device as the media device that clock information is provided.
In the present embodiment, to provide time of media device of clock information as the standard time.In the time that media device starts, all from providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
During by startup, carry out the calibration of clock, make each media device (except providing the media device of clock information) standard time and averaging network time-delay calculation based on obtaining to go out alignment time value, and self current clock is adjusted into described alignment time value.Thereby the clock that has ensured intrasystem all media devices is all consistent, even do not calibrate in the short time, the clocking error between media device is also little.Experimental data draws, the clock alignment during through startup, and the error that media device has produced in the time having moved 30 minutes is only 10 milliseconds, the error producing in the time of 1 hour is 10 milliseconds to 30 milliseconds.
In the time sending packet, described source media device 1 sends pending packet to target medium equipment 2, the time of implementation information that comprises this pending packet in described pending packet; And according to pending packet described in described time of implementation information and executing.
Described target medium equipment 2 receives after described pending packet, therefrom obtains the time of implementation information of described pending packet; According to pending packet described in described time of implementation information and executing.
Preferably the, in described pending packet, comprise media data to be played or on-unit instruction.
As a preferred embodiment of the present invention, described time of implementation information can be default tolerance or the expection time of implementation.It should be noted that the transmitting time that described tolerance is described pending packet and the difference of expection time of implementation, the i.e. transmitting time of tolerance=pending packet expection time of implementation-pending packet.The transmitting time of described pending packet is the time that source media device sends described pending packet.Therefore, described tolerance has characterized source media device or target medium equipment is carried out described pending packet after described pending Packet Generation in the time how long.
Preferably, described time of implementation information can be the expection time of implementation.Described source media device 1 sends before pending packet to target medium equipment 2, according to the transmitting time of described default tolerance and pending packet, calculate the expection time of implementation of pending packet, the time of implementation of described expection is added to and in pending packet, together sends to target medium equipment 2.
Described target medium equipment 2 receives described pending packet, and therefrom obtains the expection time of implementation of described packet.
Source media device 1 and target medium equipment 2 are carried out described pending packet according to the described expection time of implementation.
Preferably, when described time of implementation information can be tolerance.Described source media device 1 sends before pending packet to target medium equipment 2, and described tolerance is added to and in pending packet, together sends to target medium equipment 2; And according to the transmitting time of described tolerance and pending packet, calculate the expection time of implementation of pending packet.
Described target medium equipment 2 receives after described pending packet, therefrom obtains described tolerance.According to the transmitting time of described tolerance and pending packet, calculate the expection time of implementation of pending packet.
Source media device 1 and target medium equipment 2 are carried out described pending packet according to the described expection time of implementation.
In the present embodiment, the expection time of implementation of pending packet or default tolerance are added in pending packet, target medium equipment is being received after the described pending packet that adds time of implementation information, directly read the expection time of implementation of described pending packet or calculate the expection time of implementation according to described default tolerance, realize synchronizeing with source media device and carry out described pending packet, strengthened media device and synchronously play the accuracy of media data or executable operations instruction.Further, because the present invention need to not transmitted specific synchronization packets between media device, can effectively alleviate floating of the offered load that transmits specific synchronization packets between media device and cause and time of delay.Further, the present invention provides the standard time by a media device is set, and has ensured that the clock of intrasystem all media devices is all consistent, even do not calibrate in the short time, the clocking error between media device is also little.
In addition, tolerance in the present embodiment can be understood as the network delay in data transmission procedure has been done to error compensation, make target medium equipment be less than the expection time of implementation of this pending packet in the time that receives pending packet, therefore, source media device and target medium equipment all have ample time to prepare to carry out this pending packet, and the clock of source media device and target medium equipment is synchronous, it is also synchronous carrying out this pending packet.Described tolerance is preferably 100 milliseconds.
embodiment bis-
Fig. 2 shows the first realization flow of the method for the multimedia equipment simultaneous operation that the embodiment of the present invention two provides, and described method comprises:
In step S201, source media device sends pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet.
In the present embodiment, just comparatively speaking, a media device can be both source media device, can be also target medium equipment, was decided by the current performed function of this media device for described source media device and target medium equipment.Concrete, in the time that this media device will send media data or operational order to other media devices, it is source media device; When this media device is the media data that sends of reception sources media device or when operational order, it is target medium equipment.
Preferably, described time of implementation information is a default tolerance.It should be noted that the transmitting time that described tolerance is described pending packet and the difference of expection time of implementation, the i.e. transmitting time of tolerance=pending packet expection time of implementation-pending packet.The transmitting time of described pending packet is the time that source media device sends described pending packet.Therefore, described tolerance has characterized source media device or target medium equipment is carried out described pending packet after described pending Packet Generation in the time how long.
Preferably, the expection time of implementation that described time of implementation information is pending packet.The described expection time of implementation is calculated according to the transmitting time of default tolerance and pending packet by source media device, and is added in described pending packet and together sent by described source media device.
In step S202, target medium equipment receives described pending packet, and therefrom obtains the time of implementation information of described pending packet.
In step S203, source media device and target medium equipment are according to the described pending packet of the synchronous execution of described time of implementation information.
In the present embodiment, when expection time of implementation that described time of implementation information is pending packet, described source media device and target medium equipment are synchronously carried out described pending packet according to the described expection time of implementation.
When described time of implementation information is default tolerance, described source media device and target medium equipment calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, according to the described pending packet of described expection time of implementation execution.
In described pending packet, include but not limited to media data to be played or on-unit instruction.When described pending packet comprises media data to be played, described source media device and target medium equipment are according to the synchronous described media data to be played of described time of implementation information, the i.e. described media data to be played of synchronous broadcasting; When described pending packet comprises on-unit instruction, described source media device and target medium equipment, according to the synchronous described on-unit instruction of described time of implementation information, are synchronously carried out described on-unit instruction.Here, operational order includes but not limited to that volume increases, volume reduces, F.F., suspends, retreats etc.
The embodiment of the present invention is by adding the expection time of implementation of pending packet or default tolerance in pending packet to, target medium equipment is being received after the described pending packet that adds time of implementation information, directly read the expection time of implementation of described pending packet or calculate the expection time of implementation according to the transmitting time of described default tolerance and pending packet, realize synchronizeing with source media device and carry out described pending packet, strengthen media device and synchronously play the accuracy of media data or executable operations instruction.Further, because the present invention does not need to transmit specific synchronization packets between media device carrying out when synchronous, can effectively alleviate floating of the offered load that causes due to the specific synchronization packets of transmission and time of delay.
embodiment tri-
Fig. 3 shows the second realization flow of the method for the multimedia equipment simultaneous operation that the embodiment of the present invention three provides, and is applied in the system shown in Fig. 1 embodiment, and described method comprises:
In step S301, source media device or target medium equipment are from providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
In the present embodiment, when source media device or target medium device start, carry out repeatedly alternately with the media device that clock information is provided, obtain the standard time (time of the media device of clock information is provided), and calculate averaging network time delay.The described standard time is added to averaging network time delay, thereby obtain alignment time value, the clock of self is adjusted to described alignment time value, thereby ensured that the clock of intrasystem all media devices is all consistent, even do not calibrate in the short time, the clocking error between media device is also little.Experimental data draws, the clock alignment during through startup, and the error that media device has produced in the time having moved 30 minutes is only 10 milliseconds, the error producing in the time of 1 hour is 10 milliseconds to 30 milliseconds.
Preferably, it is mutual that source media device or target medium equipment and the media device that clock information is provided carry out repeatedly, and the step that calculates averaging network time delay is specially:
A. source media device or target medium equipment send network test bag to the media device that clock information is provided, and record the transmitting time value T1 of network test bag;
B. the response test bag that source media device or target medium equipment provide the media device of clock information to return described in receiving, and record the time of reception T of response test bag
4; Described response test bag comprises the time of reception value T of standard time T, network test bag
2transmitting time value T with response test bag
3;
C. according to the transmitting time value T of described network test bag
1with time of reception value T
2, response test bag transmitting time value T
3with time of reception value T
4, calculate averaging network time delay Δ T.
Wherein, the computing formula of averaging network time delay is:
ΔT＝((T
4-T
1)-(T
3-T
2))/2
Undertaken repeatedly alternately by source media device or target medium equipment and the media device that clock information is provided, obtain the mean value of current network time delay, to reduce error.
In step S302, source media device sends pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet.
In the present embodiment, described pending packet also comprises media data to be played or on-unit instruction.
Described execution information can be expection time of implementation or a default tolerance of pending packet.It should be noted that the transmitting time that described tolerance is described pending packet and the difference of expection time of implementation, the i.e. transmitting time of tolerance=pending packet expection time of implementation-pending packet.The transmitting time of described pending packet is the time that source media device sends described pending packet.Therefore, described tolerance has characterized source media device or target medium equipment is carried out described pending packet after described pending Packet Generation in the time how long.
In step S303, target medium equipment receives described pending packet, and therefrom obtains the time of implementation information of described pending packet.
In step S304, source media device and target medium equipment are according to the described pending packet of the synchronous execution of described time of implementation information.
In the present embodiment, when expection time of implementation that described time of implementation information is pending packet, described source media device and target medium equipment are synchronously carried out described pending packet according to the described expection time of implementation.
When described time of implementation information is default tolerance, described source media device and target medium equipment calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, according to the described pending packet of described expection time of implementation execution.
In described pending packet, include but not limited to media data to be played or on-unit instruction.When described pending packet comprises media data to be played, described source media device and target medium equipment are according to the described media data to be played of the synchronous broadcasting of described time of implementation information; When described pending packet comprises on-unit instruction, described source media device and target medium equipment are according to the described on-unit instruction of the synchronous execution of described time of implementation information.The operational order here includes but not limited to that volume increases, volume reduces, F.F., suspend, retreat etc.
Fig. 4 shows the mutual schematic diagram between three main medium equipment in the method for the multimedia equipment simultaneous operation that the embodiment of the present invention provides.The pending packet here comprises media data to be played and time of implementation information, and described time of implementation information is expection time of implementation, default tolerance T
rcfor 100ms.In Fig. 4, when source media device and target medium device power-up start, all with the media device that clock information is provided carry out to time, obtain the standard time, and the described standard time is added to averaging network time delay, thereby obtain alignment time value, the time value that the clock of adjusting self is described calibration, to realize clock synchronous.After clock synchronous, the clock T of source media device
dev1clock T with target medium equipment
dev2synchronous.In the time of transmission of media data, source media device (is time T according to the transmitting time of default tolerance and pending packet
dev1-1) calculate expection time of implementation of pending packet, i.e. the expection time of implementation T of pending packet
dev1-pthe transmitting time T of=pending packet
dev1-1+ T
rc, by the expection time of implementation T of described pending packet
dev1-padd in described pending packet, together send to target medium equipment.Target medium equipment is at T
dev2-2receive described pending packet, the expection time of implementation that therefrom reads out this pending packet is T
dev1-p.When clock arrives T
dev1-p(be T
dev2-p), source media device and target medium device synchronization are play the media data in described pending packet, synchronously play media data thereby realized media device.
The embodiment of the present invention is by adding the expection time of implementation of pending packet or default tolerance in pending packet to, target medium equipment is being received after the described pending packet that adds time of implementation information, directly read the expection time of implementation of described pending packet or calculate the expection time of implementation according to the transmitting time of described default tolerance and pending packet, realize synchronizeing with source media device and carry out described pending packet, strengthen media device and synchronously play the accuracy of media data or executable operations instruction.Further, because the present invention does not need to transmit specific synchronization packets between media device, can effectively alleviate the specific synchronization packets of transmission and the floating of the offered load that causes and time of delay.Further, the present invention provides clock information by a media device is set, and has ensured that the clock of intrasystem all media devices is all consistent, even do not calibrate in the short time, the clocking error between media device is also little.
embodiment tetra-
Fig. 5 shows the composition structure of the media device that the embodiment of the present invention four provides, and for convenience of explanation, only shows part related to the present invention.
Described media device comprises:
Clock alignment module 51, for obtain standard time and average network delay from the media device that clock information is provided, to carry out clock alignment.
Packet Generation module 52, for sending pending packet to target medium equipment; In described packet, comprise the time of implementation information of this pending packet.
Packet-receiving module 53, for receiving described pending packet, and therefrom obtains the time of implementation information of described pending packet.
Packet Executive Module 54, for according to pending packet described in the time of implementation information and executing of described pending packet.
Wherein, the content of described pending packet is media data or on-unit instruction to be played.The expection time of implementation that described time of implementation information is pending packet or a default tolerance; It should be noted that the transmitting time that described tolerance is described pending packet and the difference of expection time of implementation, the i.e. transmitting time of tolerance=pending packet expection time of implementation-pending packet.The transmitting time of described pending packet is the time that source media device sends described pending packet.Therefore, described tolerance has characterized source media device or target medium equipment is carried out described pending packet after described pending Packet Generation in the time how long.
In the time that described time of implementation information is default tolerance, described packet Executive Module 54 specifically for:
Calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, according to the described pending packet of described expection time of implementation execution.
Described those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional unit, in practical application, can above-mentioned functions be distributed and completed by different functional units as required, be divided into different functional units or module by the internal structure of described terminal equipment, to complete all or part of function described above.Each functional unit in embodiment can be integrated in a unit, also can be that each independent physical location exists, also can be integrated in a unit two or more unit, above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to the application's protection range.The specific works process of unit in above-mentioned terminal equipment, can, with reference to the corresponding process in previous embodiment, not repeat them here.
Those of ordinary skill in the art it is also understood that, the all or part of step realizing in above-described embodiment method is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a computer-readable recording medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for multimedia equipment simultaneous operation, is characterized in that, is applied to the media system that comprises at least one source media device, at least one target medium equipment composition, and described method comprises:
Source media device sends pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet;
Target medium equipment receives described pending packet, and therefrom obtains the time of implementation information of described pending packet;
Source media device and target medium equipment are according to the described pending packet of the synchronous execution of described time of implementation information.
2. the method for multimedia equipment simultaneous operation as claimed in claim 1, is characterized in that, described pending packet comprises media data to be played or on-unit instruction;
Described source media device and target medium equipment are specially according to the described pending packet of the synchronous execution of described time of implementation information:
Source media device and target medium equipment are according to the synchronous described media data to be played of described time of implementation information or described pending operational order.
3. the method for multimedia equipment simultaneous operation as claimed in claim 1, is characterized in that, described time of implementation information is a default tolerance; Described tolerance is the transmitting time of described pending packet and the difference of expection time of implementation;
Described source media device and target medium equipment are specially according to the described pending packet of the synchronous execution of described time of implementation information:
Described source media device and target medium equipment calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, carry out described pending packet in the time arriving the described expection time of implementation.
4. the method for multimedia equipment simultaneous operation as claimed in claim 1, is characterized in that, described system also comprises a media device that clock information is provided, and described method, before source media device sends pending packet to target medium equipment, also comprises:
Described source media device or target medium equipment are from providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
5. the method for multimedia equipment simultaneous operation as claimed in claim 4, it is characterized in that, described source media device or target medium equipment, from providing the media device of clock information to obtain calibration clock information and average network delay, are specially with the step of carrying out clock alignment:
Described source media device or target medium equipment send network test bag to the media device that clock information is provided, and record the transmitting time value of network test bag;
The response test bag that provides the media device of clock information to return according to described network test bag described in described source media device or target medium equipment receive, and record the time of reception of response test bag; Standard time, the time of reception value of network test bag and the transmitting time value of response test bag of the media device of clock information described in comprising, described response test bag are provided;
Described source media device or target medium equipment, according to transmitting time value and the time of reception value of the transmitting time value of described network test bag and time of reception value, response test bag, calculate averaging network time delay;
Described source media device or target medium equipment calculate alignment time value according to the described standard time obtaining and average network delay;
The clock of self is adjusted into described alignment time value by described source media device or target medium equipment.
6. a system for multimedia equipment simultaneous operation, is characterized in that, described system comprises:
At least one source media device, at least one target medium equipment;
Described source media device, for sending pending packet to target medium equipment; The time of implementation information that comprises this pending packet in described pending packet; And according to pending packet described in described time of implementation information and executing;
Described target medium equipment, for receiving described pending packet, and therefrom obtains the time of implementation information of described pending packet; According to pending packet described in described time of implementation information and executing.
7. the system of multimedia equipment simultaneous operation as claimed in claim 7, is characterized in that, described pending packet comprises media data to be played or on-unit instruction;
Described source media device and target medium equipment specifically for:
According to the synchronous described media data to be played of described time of implementation information or described pending operational order.
8. the system of multimedia equipment simultaneous operation as claimed in claim 1, is characterized in that, described time of implementation information is a default tolerance; Described tolerance is the transmitting time of described pending packet and the difference of expection time of implementation;
Described source media device and target medium equipment specifically for:
Calculate the expection time of implementation of described pending packet according to the transmitting time of described tolerance and described pending packet, in the time arriving the described expection time of implementation, carry out described pending packet.
9. the system of multimedia equipment simultaneous operation as claimed in claim 6, is characterized in that, described system also comprises a media device that clock information is provided, described source media device or target medium equipment also for:
From providing the media device of clock information to obtain standard time and average network delay, to carry out clock alignment.
10. the system of multimedia equipment simultaneous operation as claimed in claim 9, is characterized in that, described source media device or target medium equipment specifically for:
Send network test bag to the media device that clock information is provided, and record the transmitting time value of network test bag;
The response test bag that provides the media device of clock information to return according to described network test bag described in reception, and record the time of reception of response test bag; Standard time, the time of reception value of network test bag and the transmitting time value of response test bag of the media device of clock information described in comprising, described response test bag are provided;
According to transmitting time value and the time of reception value of the transmitting time value of described network test bag and time of reception value, response test bag, calculate averaging network time delay;
Calculate alignment time value according to the described standard time obtaining and average network delay;
The clock of self is adjusted into described alignment time value.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349199A (en) * | 2014-11-21 | 2015-02-11 | 王方淇 | Information synchronization method and device |
| CN104637505A (en) * | 2014-12-31 | 2015-05-20 | 小米科技有限责任公司 | Audio playing method and device |
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| CN104349199B (en) * | 2014-11-21 | 2017-09-26 | 王方淇 | A kind of information synchronization method and device |
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| CN104637505B (en) * | 2014-12-31 | 2017-06-16 | 小米科技有限责任公司 | Audio frequency playing method and device |
| CN105159914A (en) * | 2015-07-09 | 2015-12-16 | 中央电视台 | Material processing, editing and back-moving method and apparatus |
| CN105159914B (en) * | 2015-07-09 | 2018-10-02 | 中央电视台 | A kind of material handles, edits, method and device of moving back |
| CN106550248B (en) * | 2015-09-18 | 2020-05-01 | 中国移动通信集团公司 | Audio and video synchronization method and device |
| CN106550248A (en) * | 2015-09-18 | 2017-03-29 | 中国移动通信集团公司 | A kind of method and apparatus of audio-visual synchronization |
| CN105392040A (en) * | 2015-11-05 | 2016-03-09 | 广东欧珀移动通信有限公司 | Control method and control system of synchronous suspending and playing of multiple devices |
| CN105392040B (en) * | 2015-11-05 | 2019-02-19 | Oppo广东移动通信有限公司 | A kind of control method and control system that more equipment synchronize pause and play |
| CN105430439B (en) * | 2015-11-20 | 2017-09-15 | 广东欧珀移动通信有限公司 | Synchronizing traffic data is played and synchronous played data provides method, device |
| CN105430439A (en) * | 2015-11-20 | 2016-03-23 | 广东欧珀移动通信有限公司 | Service data synchronous playing method and apparatus and synchronous play data providing method and apparatus |
| CN106302244A (en) * | 2016-08-11 | 2017-01-04 | 自连电子科技（上海）有限公司 | A kind of Apparatus for () and method therefor eliminating network transmission jitter |
| CN106454421A (en) * | 2016-10-08 | 2017-02-22 | 广东欧珀移动通信有限公司 | Clock adjusting method, device and terminal thereof, and multimedia synchronization playing system |
| CN106454421B (en) * | 2016-10-08 | 2019-07-16 | Oppo广东移动通信有限公司 | A kind of clock adjustment, device, terminal and multimedia synchronous play system |
| CN106426169A (en) * | 2016-10-21 | 2017-02-22 | 中国科学院力学研究所 | Method and device for remotely controlling one operand through multiple operation terminals |
| CN111147906A (en) * | 2018-11-02 | 2020-05-12 | 纬创资通股份有限公司 | Synchronous playing system and synchronous playing method |
| CN111147906B (en) * | 2018-11-02 | 2024-03-15 | 纬创资通股份有限公司 | Synchronous playing system and synchronous playing method |
| CN111193570A (en) * | 2019-12-30 | 2020-05-22 | 北京凯视达科技有限公司 | Method, device, system, medium and electronic equipment for executing instructions |
| CN111913397A (en) * | 2020-07-10 | 2020-11-10 | 青岛易来智能科技股份有限公司 | Device control method, device, storage medium, and electronic apparatus |
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