CN109413493A - A kind of method that Multi-netmouth sends video - Google Patents
A kind of method that Multi-netmouth sends video Download PDFInfo
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- CN109413493A CN109413493A CN201811412839.0A CN201811412839A CN109413493A CN 109413493 A CN109413493 A CN 109413493A CN 201811412839 A CN201811412839 A CN 201811412839A CN 109413493 A CN109413493 A CN 109413493A
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
-
- 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
Abstract
The invention discloses a kind of methods that Multi-netmouth sends video, the branch mailbox to video is realized by the management to memory, video data is sent by Multi-netmouth again, comprising the following steps: image size l × h that size M × N of display image and each cabinet can be shown as needed determines the quantity n of the network interface for the transmission video for needing to use；According to cabinet layouts, by image pixel data by sequence of addresses deposit external dynamic memory；Read address operation is carried out to dynamic memory, to obtain the image data packet that each network interface needs to send；Progressive scan principle is shown according to LED, and by image by n network interface output, each network interface is responsible for sending the part of corresponding cabinet.The present invention issues the image of each cabinet separately through a network interface, reduces the delay of image transmitting between cabinet, ensure that LED shows the quality of image；Effective and feasible method is provided for the transmission of high-definition picture, irregularly arranges for cabinet and provides good Display Realization method.
Description
Technical field
The invention belongs to transmission of video display control fields, and in particular to a kind of method that Multi-netmouth sends video is sent
Video image branch mailbox body is sent to video reception card by multiple network interfaces and gives showing on LED display by card.
Background technique
Traditional image transmitting, transmission principle are the row scanning theories shown according to LED, and sending card is by each of video
Row data are packaged into a packet and are sent to reception card by network interface, and this transmission method is simple and effective, but transmitted when needs
Image resolution ratio greatly to a certain extent after, the delay that network interface is sent between the first row data and last line data can make to show
Discontinuously.
Such as a secondary size is stored in external data bus width by sequence of addresses for 256 × 256RGB888 image and is
It is sent in the dynamic memory of 24bit and by a network interface branch, the reading data clock of dynamic memory is 125MHz, then sends every
Data line occupy time beThat is 2.048 microseconds (us) send the time of the first row and last line
Between be divided into 522.24 microseconds, the size of this interval time can be progressively longer with the increase of the size of image, thus when figure
As it is sufficiently large when, will cause image using the method transmission image and show discontinuous phenomenon.
The method that traditional single network interface sends video, will reach a good display effect i.e. between first trip and last line
Transmission delay control within an acceptable range, network interface send image resolution ratio will be very low.Multi-netmouth proposed by the present invention
Network interface rate is not able to satisfy transmission high resolution graphics when the method for sending video can solve traditional single network interface transmission video
The drawbacks of picture, provides an effective and feasible method for the transmission display of high-definition picture.
Summary of the invention
The object of the present invention is to provide a kind of methods that Multi-netmouth sends video, on the one hand transmit to solve conventional video
The delay issue of method；On the other hand the method for proposing a kind of Multi-netmouth transmission image, also for high-resolution can be transmitted
Image adapts to the needs of different application, while also providing a kind of feasible displaying scheme for irregular cabinet layouts.
In view of the above shortcomings of the prior art, a kind of method that Multi-netmouth sends video is provided.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows:
A kind of method that Multi-netmouth sends video realizes the branch mailbox to video by the management to memory, then passes through more nets
Mouth sends video data, specifically includes the following steps:
Step 1: the image size l × h for needing to show that size M × N of image and each cabinet can be shown according to user is true
The quantity n of the network interface of the fixed transmission video for needing to use；
Step 2: according to cabinet layouts, image pixel data is stored in external dynamic memory by sequence of addresses；
Step 3: carrying out corresponding read address operation to dynamic memory, to obtain the image that each network interface needs to send
Data packet；
Step 4: showing progressive scan principle according to LED, and by image by n network interface output, each network interface is responsible for transmission
The part of corresponding cabinet.
Image size l × h that cabinet described in step 1 can be shown is one of size M × N that user needs to show image
Factor, the quantity n of the network interface of the transmission video for needing to use be needed for cabinet number n, it is described
The data/address bus of external dynamic memory described in step 2 is 24bit.
When cabinet layouts described in step 2 are x × y stacked layout, whereinImage pixel
In data by address sequence deposit external dynamic memory, progressive scan principle is shown according to LED, diagram picture is passed through into n net
Mouth output, each network interface are responsible for sending the part of corresponding cabinet, specifically:
The 1st its address of bag data sent are as follows: 0,1,2 ..., l-2, l-1, its ground of the 1st bag data that the 2nd network interface is sent
Location are as follows: l, l+1, l+2 ..., 2l-2,2l-1, the 1st its address of bag data that x-th of network interface is sent are as follows: M-l, M-l+1, M-l+
2 ..., M-2, M-1, the 1st its address of bag data that (x+1)th network interface is sent are as follows: M × h, M × h+1 ..., M × h+l-1, according to this
Analogize；
The 2nd its address of bag data that 1st network interface is sent are as follows: M, M+1, M+2 ..., M+l-2, M+l-1, the 2nd network interface hair
The 2nd its address of bag data sent are as follows: M+l, M+l+1, M+l+2 ..., M+2l-1, its ground of the 2nd bag data that x-th of network interface is sent
Location are as follows: 2M-l, 2M-l+1,2M-l+2 ..., 2M-1, the 2nd its address of bag data that (x+1)th network interface is sent are as follows: M × h+M, M ×
H+M+1, M × h+M+2 ..., M × h+M+l-1 ..., and so on.
When cabinet layouts described in step 2 are n × 1 horizontal arrangement, image pixel data is stored in external dynamic by sequence of addresses
In memory, progressive scan principle is shown according to LED, and by diagram picture by n network interface output, each network interface, which is responsible for sending, to be corresponded to
The part of cabinet, specifically:
The 1st its address of bag data that 1st network interface is sent are as follows: 0,1,2 ..., l-1, the 1st packet number that the 2nd network interface is sent
According to its address are as follows: l, l+1, l+2 ..., 2l-1, and so on；The 2nd its address of bag data that 1st network interface is sent are as follows: n × l, n
× l+1, n × l+2 ..., n × l+l-1, the 2nd its address of bag data that the 2nd network interface is sent are as follows: n × l+l, n × l+l+1, n ×
L+l+2 ..., n × l+2l-1, and so on.
When cabinet layouts described in step 2 are 1 × n vertical arrangement, image pixel data is stored in external dynamic by sequence of addresses
In memory, progressive scan principle is shown according to LED, and by diagram picture by n network interface output, each network interface, which is responsible for sending, to be corresponded to
The part of cabinet, specifically:
N network interface sends the image data of corresponding cabinet, the 1st its address of bag data that the 1st network interface is sent are as follows: and 0,1,
2 ..., l-1, the 1st its address of bag data that the 2nd network interface is sent are as follows: l × h, l × h+1, l × h+2 ..., l × h+l-1, according to this
Analogize；The 2nd its address of bag data that 1st network interface is sent are as follows: l, l+1, l+2 ..., 2l-1, the 2nd packet that the 2nd network interface is sent
Its address of data are as follows: l × h+l, l × h+l+1, l × h+l+2 ..., l × h+2l-1, and so on.
The invention has the following advantages:
The method that a kind of Multi-netmouth proposed by the present invention sends video, by the image of each cabinet separately through a net
Mouth issues, and reduces the delay of image transmitting between cabinet in this way, ensure that LED shows the quality of image；And traditional list
The method that network interface sends video will reach transmission delay control of the good display effect i.e. between first trip and last line and exist
In tolerance interval, the resolution ratio that network interface sends image will be very low.The method that Multi-netmouth proposed by the present invention sends video can
It is high-resolution to solve the drawbacks of network interface rate is not able to satisfy transmission high-definition picture when traditional single network interface transmits video
The transmission of rate image provides an effective and feasible method, while irregularly arranging for cabinet and providing a kind of good display
Implementation method.
Detailed description of the invention
Fig. 1 is the cabinet illustraton of model of stacking of the invention；
Fig. 2 is the cabinet illustraton of model of horizontal arrangement of the invention；
Fig. 3 is the cabinet illustraton of model of vertical arrangement of the invention；
Fig. 4 is the cabinet illustraton of model irregularly stacked of the invention；
Fig. 5 is that 8 cabinet of one kind of the cabinet pattern enumeration for Fig. 1 of the invention stacks embodiment；
Fig. 6 is that the cabinet for Fig. 5 of the invention stacks embodiment, and image data address storage in dynamic memory is shown
It is intended to.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
The method that a kind of Multi-netmouth of the invention sends video realizes the branch mailbox to video by the management to memory, then
Video data is sent by Multi-netmouth, specifically includes the following steps:
Step 1: the image size l × h for needing to show that size M × N of image and each cabinet can be shown according to user is true
The quantity n of the network interface of the fixed transmission video for needing to use；
Step 2: according to cabinet layouts, image pixel data is stored in external dynamic memory by sequence of addresses；
Step 3: carrying out corresponding read address operation to dynamic memory, to obtain the image that each network interface needs to send
Data packet；
Step 4: showing progressive scan principle according to LED, and by image by n network interface output, each network interface is responsible for transmission
The part of corresponding cabinet.
In embodiment, image size l × h that cabinet can be shown be one of size M × N that user needs to show image because
Number needs the number n of cabinet needed for being using the quantity n of the network interface of the transmission video arrived,
In embodiment, image is RGB888 format, and the data/address bus of external dynamic memory described in step 2 is 24bit.
As shown in Figure 1, cabinet layouts are x × y stacked layout, whereinImage pixel number
In by sequence of addresses deposit external dynamic memory, progressive scan principle is shown according to LED, diagram picture is passed through into n network interface
Output, each network interface are responsible for sending the part of corresponding cabinet, specifically:
The 1st its address of bag data sent are as follows: 0,1,2 ..., l-2, l-1, its ground of the 1st bag data that the 2nd network interface is sent
Location are as follows: l, l+1, l+2 ..., 2l-2,2l-1, the 1st its address of bag data that x-th of network interface is sent are as follows: M-l, M-l+1, M-l+
2 ..., M-2, M-1, the 1st its address of bag data that (x+1)th network interface is sent are as follows: M × h, M × h+1 ..., M × h+l-1, according to this
Analogize；
The 2nd its address of bag data that 1st network interface is sent are as follows: M, M+1, M+2 ..., M+l-2, M+l-1, the 2nd network interface hair
The 2nd its address of bag data sent are as follows: M+l, M+l+1, M+l+2 ..., M+2l-1, its ground of the 2nd bag data that x-th of network interface is sent
Location are as follows: 2M-l, 2M-l+1,2M-l+2 ..., 2M-1, the 2nd its address of bag data that (x+1)th network interface is sent are as follows: M × h+M, M ×
H+M+1, M × h+M+2 ..., M × h+M+l-1 ..., and so on.
As shown in Fig. 2, cabinet layouts are the horizontal arrangement of n × 1, image pixel data is by sequence of addresses deposit external dynamic
In depositing, progressive scan principle is shown according to LED, and by diagram picture by n network interface output, each network interface is responsible for sending corresponding case
The part of body, specifically:
The 1st its address of bag data that 1st network interface is sent are as follows: 0,1,2 ..., l-1, the 1st packet number that the 2nd network interface is sent
According to its address are as follows: l, l+1, l+2 ..., 2l-1, and so on；The 2nd its address of bag data that 1st network interface is sent are as follows: n × l, n
× l+1, n × l+2 ..., n × l+l-1, the 2nd its address of bag data that the 2nd network interface is sent are as follows: n × l+l, n × l+l+1, n ×
L+l+2 ..., n × l+2l-1, and so on.
As shown in figure 3, cabinet layouts are 1 × n vertical arrangement, image pixel data is by sequence of addresses deposit external dynamic
In depositing, progressive scan principle is shown according to LED, and by diagram picture by n network interface output, each network interface is responsible for sending corresponding case
The part of body, specifically:
N network interface sends the image data of corresponding cabinet, the 1st its address of bag data that the 1st network interface is sent are as follows: and 0,1,
2 ..., l-1, the 1st its address of bag data that the 2nd network interface is sent are as follows: l × h, l × h+1, l × h+2 ..., l × h+l-1, according to this
Analogize；The 2nd its address of bag data that 1st network interface is sent are as follows: l, l+1, l+2 ..., 2l-1, the 2nd packet that the 2nd network interface is sent
Its address of data are as follows: l × h+l, l × h+l+1, l × h+l+2 ..., l × h+2l-1, and so on.
For special cabinet layouts shown in Fig. 4, the principle that Multi-netmouth sends video is similar to above.
If the image of a 64 × 64RGB888 of frame is stored in external dynamic memory by sequence of addresses, the arrangement side of cabinet
Formula such as Fig. 5 (stacked layout proposed in similar technical solution of the present invention), then each cabinet image size is 16 × 32, the figure
As the storage condition in dynamic memory is substantially as shown in Figure 6.
The image data of cabinet 1~8 is respectively allocated to network interface 1~8 to export, each network interface is responsible for sending a cabinet
Image data.Displaying principle is scanned according to LED row, the 1st its address of bag data for enabling network interface 1 send are as follows: 0,1,2,3,4,5,6,
7,8,9,10,11,12,13,14,15, the 1st its address of bag data for enabling network interface 2 send are as follows: 16,17,18,19,20,21,22,
The 1st its address of bag data that 23,24,25,26,27,28,29,30,31 ... network interfaces 5 are sent are as follows: 2048,2049,2050,2051,
2052,2053,2054,2055,2056,2057,
2058,2059,2060,2061,2062,2063 ... the rest may be inferred；The 2nd its address of bag data that network interface 1 is sent are as follows:
65,66,67,68,69,70,71,72,73,74,75,76,77,78,79, the 2nd its address of bag data that network interface 2 is sent are as follows: 80,
81,82,83,84,85,86,87,88,89,90,91,92,93,94,95 ..., the 2nd its address of bag data that network interface 5 is sent are as follows:
2112,2113,2114,2115,2116,2117,2118,2119,2120,2121,2122,2123,2124,2125,2126,
2127 ..., and so on.
It can be seen from the above, the present invention issues the image of each cabinet separately through a network interface, reduce case in this way
The delay of image transmitting between body ensure that LED shows the quality of image；The method that Multi-netmouth proposed by the present invention sends video
The drawbacks of network interface rate is not able to satisfy transmission high-definition picture when can solve traditional single network interface transmission video, is high score
The transmission of resolution image provides an effective and feasible method, at the same irregularly arrange for cabinet provide it is a kind of good aobvious
Show implementation method.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (6)
1. a kind of method that Multi-netmouth sends video, it is characterised in that: the branch mailbox to video is realized by the management to memory, then
Video data is sent by Multi-netmouth, specifically includes the following steps:
Step 1: it is needed according to image size l × h determination that user needs to show that size M × N of image and each cabinet can be shown
The quantity n of the network interface for the transmission video to use；
Step 2: according to cabinet layouts, image pixel data is stored in external dynamic memory by sequence of addresses；
Step 3: carrying out corresponding read address operation to dynamic memory, to obtain the image data that each network interface needs to send
Packet；
Step 4: showing progressive scan principle according to LED, and by image by n network interface output, each network interface, which is responsible for sending, to be corresponded to
The part of cabinet.
2. the method that a kind of Multi-netmouth according to claim 1 sends video, it is characterised in that: cabinet energy described in step 1
Image size l × h of display is the factor for size M × N that user needs to show image, the transmission for needing to use
The quantity n of the network interface of video be needed for cabinet number n, it is described
3. the method that a kind of Multi-netmouth according to claim 2 sends video, it is characterised in that: described image RGB888
Format, the data/address bus of external dynamic memory described in step 2 are 24bit.
4. the method that a kind of Multi-netmouth according to claim 3 sends video, it is characterised in that: cabinet cloth described in step 2
Office is x × y stacked layout, whereinImage pixel data is stored in external dynamic by sequence of addresses
In memory, progressive scan principle is shown according to LED, and by diagram picture by n network interface output, each network interface, which is responsible for sending, to be corresponded to
The part of cabinet, specifically:
The 1st its address of bag data sent are as follows: 0,1,2 ..., l-2, l-1, the 1st its address of bag data that the 2nd network interface is sent
Are as follows: l, l+1, l+2 ..., 2l-2,2l-1, the 1st its address of bag data that x-th of network interface is sent are as follows: M-l, M-l+1, M-l+
2 ..., M-2, M-1, the 1st its address of bag data that (x+1)th network interface is sent are as follows: M × h, M × h+1 ..., M × h+l-1, according to this
Analogize；
The 2nd its address of bag data that 1st network interface is sent are as follows: M, M+1, M+2 ..., M+l-2, M+l-1, what the 2nd network interface was sent
2nd its address of bag data are as follows: M+l, M+l+1, M+l+2 ..., M+2l-1, the 2nd its address of bag data that x-th of network interface is sent are as follows:
2M-l, 2M-l+1,2M-l+2 ..., 2M-1, the 2nd its address of bag data that (x+1)th network interface is sent are as follows: M × h+M, M × h+M+
1, M × h+M+2 ..., M × h+M+l-1 ..., and so on.
5. the method that a kind of Multi-netmouth according to claim 3 sends video, it is characterised in that: cabinet cloth described in step 2
Office is the horizontal arrangement of n × 1, and image pixel data is stored in external dynamic memory by sequence of addresses, shows and progressively scans according to LED
Principle, by diagram picture by n network interface output, each network interface is responsible for sending the part of corresponding cabinet, specifically:
1st network interface send the 1st its address of bag data are as follows: 0,1,2 ..., l-1, the 2nd network interface send the 1st bag data its
Address are as follows: l, l+1, l+2 ..., 2l-1, and so on；The 2nd its address of bag data that 1st network interface is sent are as follows: n × l, n × l+
1, n × l+2 ..., n × l+l-1, the 2nd its address of bag data that the 2nd network interface is sent are as follows: n × l+l, n × l+l+1, n × l+l+
2 ..., n × l+2l-1, and so on.
6. the method that a kind of Multi-netmouth according to claim 3 sends video, it is characterised in that: cabinet cloth described in step 2
Office is 1 × n vertical arrangement, and image pixel data is stored in external dynamic memory by sequence of addresses, shows and progressively scans according to LED
Principle, by diagram picture by n network interface output, each network interface is responsible for sending the part of corresponding cabinet, specifically:
N network interface sends the image data of corresponding cabinet, the 1st its address of bag data that the 1st network interface is sent are as follows: and 0,1,2 ...,
L-1, the 1st its address of bag data that the 2nd network interface is sent are as follows: l × h, l × h+1, l × h+2 ..., l × h+l-1, and so on；
1st network interface send the 2nd its address of bag data are as follows: l, l+1, l+2 ..., 2l-1, the 2nd network interface send the 2nd bag data its
Address are as follows: l × h+l, l × h+l+1, l × h+l+2 ..., l × h+2l-1, and so on.
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| CN107145316A (en) * | 2017-04-14 | 2017-09-08 | 西安诺瓦电子科技有限公司 | Display screen control system and display controller |
| CN206865640U (en) * | 2017-04-28 | 2018-01-09 | 西安诺瓦电子科技有限公司 | Image transmitting control system |
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| CN112750393A (en) * | 2019-10-31 | 2021-05-04 | 西安诺瓦星云科技股份有限公司 | Image display method, device and system and display screen controller |
| CN111585912A (en) * | 2020-04-30 | 2020-08-25 | 卡莱特（深圳）云科技有限公司 | Data transmission method and device based on flow shaping and LED display screen |
| CN111585912B (en) * | 2020-04-30 | 2021-12-10 | 卡莱特云科技股份有限公司 | Data transmission method and device based on flow shaping and LED display screen |
| CN113438502A (en) * | 2021-05-27 | 2021-09-24 | 卡莱特云科技股份有限公司 | Video frame image transmission method, sending card and video frame image display system |
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