CN105681682B - Method of transmitting video data and system - Google Patents
Method of transmitting video data and system Download PDFInfo
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- CN105681682B CN105681682B CN201610033870.8A CN201610033870A CN105681682B CN 105681682 B CN105681682 B CN 105681682B CN 201610033870 A CN201610033870 A CN 201610033870A CN 105681682 B CN105681682 B CN 105681682B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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- Engineering & Computer Science (AREA)
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The present invention relates to a kind of method of transmitting video data and system, above-mentioned method of transmitting video data includes the following steps: to select the road k video data as basic video data in the video data of the road n；Wherein, n, k are positive integer, k < n；After the road n-k video data other than base video data is carried out delay process simultaneously, it is superimposed to k roadbed plinth video data respectively on the way, obtains overlay video data；Overlay video data are transmitted to receiving end, receiving end is after receiving the overlay video data, by the overlay video data convert at the road n video data；Its encounter video number it is more when, the video data that multi-path video data can be converted into less number is accordingly transmitted, and the video frequency data quality in transmission process is made to be guaranteed.
Description
Technical field
The present invention relates to technical field of video signal, more particularly to a kind of method of transmitting video data and system.
Background technique
With multimedia work or in terms of extensive use, vision signal more and more frequently appears in people
The visual field in.In the environment of gradually getting higher to vision signal frequency of use, the transmission quality of associated video data is obtained
More significant concern.
In practical application, it is often necessary to transmit multi-channel video signal between different boards, traditional method
To be transmitted by using multiple physical links, encounter video number it is more when, will cause between board occur it is a large amount of
Cable, to be easy to influence the transmission quality of video data.
Summary of the invention
Based on this, it is necessary to be easy the technical issues of influencing video data transmission quality for traditional scheme, provide one kind
Method of transmitting video data and system.
A kind of method of transmitting video data, includes the following steps:
Select the road k video data as basic video data in the video data of the road n；Wherein, n, k are positive integer, k <
n；
After the road n-k video data other than base video data is carried out delay process simultaneously, it is superimposed to k roadbed plinth respectively
Video data on the way, obtains overlay video data；
Overlay video data are transmitted to receiving end, receiving end is after receiving the overlay video data, by the superposition
Video data restoration is at the road n video data.
A kind of video-frequency data transmission system, comprising:
Selecting module, for selecting the road k video data as basic video data in the video data of the road n；Wherein, n, k
It is positive integer, k < n；
Laminating module, after the road the n-k video data other than base video data is carried out delay process simultaneously, respectively
It is superimposed to k roadbed plinth video data on the way, obtains overlay video data；
Recovery module, for overlay video data to be transmitted to receiving end, receiving end is receiving the overlay video data
Afterwards, by the overlay video data convert at the road n video data.
Above-mentioned method of transmitting video data and system, based on the road k video data is selected first in the video data of the road n
Video data is superimposed to base video data on the way respectively, obtains after other video datas are carried out delay process simultaneously
Corresponding overlay video data, then receiving end is transmitted it to, in receiving end by the overlay video data convert at the road n video
Data, to realize the transmission of said n routes video data, encounter video number it is more when, can be by multi-path video data
The video data for being converted into less number is accordingly transmitted, and the video frequency data quality in transmission process is made to be guaranteed.
Detailed description of the invention
Fig. 1 is the method for transmitting video data flow chart of one embodiment；
Fig. 2 is the video data delay schematic diagram of one embodiment；
Fig. 3 is the video data restoration schematic diagram of one embodiment；
Fig. 4 is the video-frequency data transmission system structural schematic diagram of one embodiment.
Specific embodiment
The specific embodiment of method of transmitting video data and device of the invention is described in detail with reference to the accompanying drawing.
It show the method for transmitting video data flow chart of one embodiment with reference to Fig. 1, Fig. 1, includes the following steps:
S10 selects the road k video data as basic video data in the video data of the road n；Wherein, n, k are positive whole
Number, k < n；
In above-mentioned steps S10, more number video data needs to transmit if it exists, in order to avoid occurring occurring greatly between board
The technical issues of cable etc. influences transmission quality or efficiency is measured, k can be selected in the road the n video data transmitted
Road video data is as basic video data, then other road n-k video datas are delayed and are superimposed, by the road n video data
It is converted to the road k video data to be transmitted, with the bandwidth using existing transmission link of maximal efficiency, controls and regarded in transmission process
The number of frequency evidence guarantees the transmission quality of video data.The above-mentioned multichannel number video data transmitted has identical
Resolution ratio and frame per second.
S20 is superimposed to the road k after the road the n-k video data other than base video data is carried out delay process simultaneously respectively
Base video data on the way, obtain overlay video data；
It, can be by the road n-k in addition to base video data after selecting k roadbed plinth video data in above-mentioned steps S20
Video data carries out delay process simultaneously, then is superimposed to base video data respectively on the way, in this way, the road n video data is just
It is converted to the road k video data.Under normal conditions, in order to avoid superposition rear video data cause confusion phenomenon, each roadbed plinth view
Frequency is according to the video data after only superposition all the way delay process.
During the road the Hou n-k video counts that will be delayed are superimposed to k roadbed plinth video data ,+1 tunnel of kth can be regarded
Frequency is superimposed to k roadbed plinth video counts according to (the 1st road video data in the video data of the road n-k in addition to base video data)
The 1st road video data in, by 2nd road video data of+2 road video data overlay of kth into k roadbed plinth video data,
And so on, until the road the n-k video data overlay in addition to base video data is finished, make overlay video data include to
All information in the road the n video data of transmission, to guarantee the information integrity of overlay video data, thus what guarantee was transmitted
The information integrity of video data.
Overlay video data are transmitted to receiving end by S30, and receiving end, will be described after receiving the overlay video data
Overlay video data convert is at the road n video data.
Receiving end can first obtain the composition of the road overlay video data Zhong Ge video data after receiving overlay video data
Video data, then the delayed data that video data is formed in each road video data is obtained respectively；Such as in overlay video data
Certain road video data is formed by+1 road video data of the 1st roadbed plinth video data overlay kth, and+1 road video data of kth is folded
In addition there are how many delays etc. before；Then the composition video data of the road overlay video data Zhong Ge video data can be divided into
Multi-path video data before superposition is reduced to the original road n video data further according to corresponding delayed data, makes receiving end can be with
Corresponding processing corresponding to said n routes video data.
Method of transmitting video data provided in this embodiment, selected in the video data of the road n first the road k video data as
Base video data are superimposed to base video data on the way after other video datas are carried out delay process simultaneously respectively,
Corresponding overlay video data are obtained, then transmit it to receiving end, in receiving end by the overlay video data convert at the road n
Video data, to realize the transmission of said n routes video data, encounter video number it is more when, can be by multi-channel video
Data conversion is accordingly transmitted at the video data of less number, and the video frequency data quality in transmission process is made to be guaranteed.
In one embodiment, the road the n-k video data other than the above-mentioned data by base video carries out delay process simultaneously
Afterwards, the process on the way for being superimposed to k roadbed plinth video data respectively may include:
If k < n≤2k, by the road the n-k video data in addition to base video data while delay time t；Wherein, t is
Positive real number；
The delay road Hou n-k video data is superimposed to respectively in base video data all the way.
If k < n≤2k, select the road k video data as basic video data after, there remains the road n-k video data, on
N-k < k is stated, the road the n-k road video data Zhong Ge video data delay time t can be superimposed to k base video data respectively
On the way, wherein the video data after being at most superimposed delay all the way on each roadbed plinth video data turns the road n video data
It is changed to the road k video data, to be transmitted accordingly.The time t value of the above-mentioned road n-k video data delay can be according to specific
Video data is configured, for example is set as 1 second, 2 seconds equivalences.
The above-mentioned road the n-k video data by addition to base video data is delayed a seconds, and is superimposed to each roadbed plinth view respectively
The process on the way of frequency evidence may include:
First by k roadbed plinth video data input fifo memory, t is arranged in the delay time of above-mentioned FIFO memory；
Interval time t Hou Jiang n-k road video data input fifo memory, then it is previously defeated from the output of above-mentioned FIFO memory
The video data entered is superimposed accordingly with realizing the delay of corresponding video data.
In one embodiment, the road the n-k video data other than the above-mentioned data by base video carries out delay process simultaneously
Afterwards, the process on the way for being superimposed to k roadbed plinth video data respectively may include:
If n >=2k, the road the n-k video data in addition to base video data is divided into several groups；Wherein, every group of view
The number of frequency evidence is no more than k；
The sequence b for determining each group video data carries out delay b*t to b group video data；Wherein, b is positive integer, symbol
Number * indicates to be multiplied；
The road each group video data Zhong Mei video data is sequentially overlapped in sequence to base video data all the way.
Above-mentioned time t can be configured according to specific video data, for example be set as 1 second, 2 seconds equivalences.
In order to guarantee the orderly superposition of video data, every road video data is at most superimposed the video counts after delay all the way every time
According to if n >=2k, after primary delay and superposition processing, it is possible that not being superimposed or being superimposed there are video data and is mixed
Random technical problem determines each at this point it is possible to which the road the n-k video data in addition to base video data is divided into several groups
The sequence b of group video data, is delayed and is superimposed accordingly to each group video data respectively in order, to guarantee to finally obtain
Overlay video data integrality.
As one embodiment, the above-mentioned process for carrying out delay b*t to b group video data may include:
Each group video data is sequentially input into FIFO memory in sequence；Wherein, FIFO memory setting is prolonged
When time t, the time interval of two adjacent groups video data input fifo memory is t；
Corresponding video data is exported from the FIFO memory, each group video data after being delayed.
The present embodiment carries out delay process, under normal circumstances, video counts to corresponding video data using FIFO memory
It is greater than video data pixel clock according to the maximum transmitted clock of transmission link, after the conversion of FIFO memory clock domain, transmission
Required time is available to be effectively shortened, so as to improve corresponding efficiency of transmission.
In one embodiment, above-mentioned receiving end can at the process of the road n video data by the overlay video data convert
To include:
Obtain the composition video data of the road overlay video data Zhong Ge video data；
The delayed data that video data is formed in each road video data is obtained respectively；
According to the delayed data by each composition video data restoration at the road n video data.
In one embodiment, as shown in Fig. 2, can first select 3 if there is 9 road video datas (video flowing) to need to transmit
Road video data (video flowing 1, video flowing 2 and video flowing 3) is as basic video data, by video flowing 4, video flowing 5 and video
Stream 6 is used as first group of video data, and delay is superimposed on video flowing 1, video flowing 2 and video flowing 3 respectively after a seconds, wherein can be with
Video flowing 4 after delay is superimposed on video flowing 1, the video flowing 5 after delay is superimposed on video flowing 2, after delay
Video flowing 6 is superimposed on video flowing 3；It regard video flowing 7, video flowing 8 and video flowing 9 as second group of video data again, be delayed 2a
It is superimposed on superimposed video flowing 4, video flowing 5 and video flowing 6 respectively after second, wherein the video flowing 7 after delay can be folded
It adds on video flowing 4, the video flowing 8 after delay is superimposed on video flowing 5, the video flowing 9 after delay is superimposed to video flowing 6
On, such 9 road video data is just converted into 3 road overlay video data.
After 3 road overlay video data after above-mentioned delay and superposition processing are transported to receiving end, as shown in figure 3, receiving end
3 road overlay video data can be decomposed according to the composition video data and related delayed data in above-mentioned overlay video data
For 9 road video datas, for example, by first via overlay video data convert at video flowing 1, video flowing 4 and video flowing 7 etc., then
Corresponding clock domain conversion is carried out according to above-mentioned delayed data, receiving end can be by its received 3 road overlay video data also
Original realizes the transmission to multi-path video data at 9 original road video datas.
The video-frequency data transmission system structural schematic diagram of one embodiment is shown with reference to Fig. 4, Fig. 4, comprising:
Selecting module 10, for selecting the road k video data as basic video data in the video data of the road n；Wherein, n,
K is positive integer, k < n；
Laminating module 20, after the road the n-k video data other than base video data is carried out delay process simultaneously, point
It is not superimposed to k roadbed plinth video data on the way, obtains overlay video data；
Recovery module 30, for overlay video data to be transmitted to receiving end, receiving end is receiving the overlay video number
According to rear, by the overlay video data convert at the road n video data.
In one embodiment, above-mentioned laminating module can be further used for:
If k < n≤2k, by the road the n-k video data in addition to base video data while delay time t；
The delay road Hou n-k video data is superimposed to respectively in base video data all the way.
In one embodiment, above-mentioned laminating module can be further used for:
If n >=2k, the road the n-k video data in addition to base video data is divided into several groups；Wherein, every group of view
The number of frequency evidence is no more than k；
The sequence b for determining each group video data carries out delay b*t to b group video data；Wherein, symbol * indicates phase
Multiply；
The road each group video data Zhong Mei video data is sequentially overlapped in sequence to base video data all the way.
As one embodiment, above-mentioned laminating module can be further used for:
Each group video data is sequentially input into FIFO memory in sequence；Wherein, FIFO memory setting is prolonged
When time t, the time interval of two adjacent groups video data input fifo memory is t；
Corresponding video data is exported from the FIFO memory, each group video data after being delayed.
In one embodiment, above-mentioned recovery module can be further used for:
Obtain the composition video data of the road overlay video data Zhong Ge video data；
The delayed data that video data is formed in each road video data is obtained respectively；
According to the delayed data by each composition video data restoration at the road n video data.
Video data transmission device provided by the invention and method of transmitting video data provided by the invention correspond,
The technical characteristic and its advantages that the embodiment of the method for transmitting video data illustrates are suitable for video data transmission dress
In the embodiment set, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of method of transmitting video data, which comprises the steps of:
Select the road k video data as basic video data in the video data of the road n；Wherein, n, k are positive integer, k < n；
After the road n-k video data other than base video data is carried out delay process simultaneously, it is superimposed to the road k base video respectively
Data on the way, obtain overlay video data；
Overlay video data are transmitted to receiving end, receiving end is after receiving the overlay video data, by the overlay video
Data convert is at the road n video data；
Wherein, the overlay video data convert is included: by the receiving end at the process of the road n video data
Obtain the composition video data of the road overlay video data Zhong Ge video data；
The delayed data that video data is formed in each road video data is obtained respectively；
According to the delayed data by each composition video data restoration at the road n video data；
After the road n-k video data other than the data by base video carries out delay process simultaneously, it is superimposed to k roadbed plinth respectively
The process on the way of video data includes:
If k < n≤2k, by the road the n-k video data in addition to base video data while delay time t；
The delay road Hou n-k video data is superimposed to respectively in base video data all the way.
2. method of transmitting video data according to claim 1, which is characterized in that other than the data by base video
After the road n-k video data carries out delay process simultaneously, the process on the way for being superimposed to k roadbed plinth video data respectively includes:
If n >=2k, the road the n-k video data in addition to base video data is divided into several groups；Wherein, every group of video counts
According to number be no more than k；
The sequence b for determining each group video data carries out delay b*t to b group video data；Wherein, symbol * indicates to be multiplied；
The road each group video data Zhong Mei video data is sequentially overlapped in sequence to base video data all the way.
3. method of transmitting video data according to claim 2, which is characterized in that described to be carried out to b group video data
Delay b*t process include:
Each group video data is sequentially input into FIFO memory in sequence；Wherein, when setting delay to the FIFO memory
Between t, the time interval of two adjacent groups video data input fifo memory is t；
Corresponding video data is exported from the FIFO memory, each group video data after being delayed.
4. a kind of video-frequency data transmission system characterized by comprising
Selecting module, for selecting the road k video data as basic video data in the video data of the road n；Wherein, n, k are
Positive integer, k < n；
Laminating module is superimposed respectively after the road the n-k video data other than base video data is carried out delay process simultaneously
On the way to k roadbed plinth video data, overlay video data are obtained；
Recovery module, for overlay video data to be transmitted to receiving end, receiving end, will after receiving the overlay video data
The overlay video data convert is at the road n video data；
Wherein, the recovery module is further used for:
Obtain the composition video data of the road overlay video data Zhong Ge video data；
The delayed data that video data is formed in each road video data is obtained respectively；
According to the delayed data by each composition video data restoration at the road n video data；
The laminating module is further used for:
If k < n≤2k, by the road the n-k video data in addition to base video data while delay time t；
The delay road Hou n-k video data is superimposed to respectively in base video data all the way.
5. video-frequency data transmission system according to claim 4, which is characterized in that the laminating module is further used for:
If n >=2k, the road the n-k video data in addition to base video data is divided into several groups；Wherein, every group of video counts
According to number be no more than k；
The sequence b for determining each group video data carries out delay b*t to b group video data；Wherein, symbol * indicates to be multiplied；
The road each group video data Zhong Mei video data is sequentially overlapped in sequence to base video data all the way.
6. video-frequency data transmission system according to claim 5, which is characterized in that the laminating module is further used for:
Each group video data is sequentially input into FIFO memory in sequence；Wherein, when setting delay to the FIFO memory
Between t, the time interval of two adjacent groups video data input fifo memory is t；
Corresponding video data is exported from the FIFO memory, each group video data after being delayed.
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