CN109640004A - A kind of the computer video transmission method and system of low bandwidth - Google Patents
A kind of the computer video transmission method and system of low bandwidth Download PDFInfo
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- CN109640004A CN109640004A CN201910070907.8A CN201910070907A CN109640004A CN 109640004 A CN109640004 A CN 109640004A CN 201910070907 A CN201910070907 A CN 201910070907A CN 109640004 A CN109640004 A CN 109640004A
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- computer
- signal
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- computer video
- video
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Classifications
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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
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
-
- 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 stream to a specific local network, e.g. a Bluetooth® network
-
- 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 stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
This application provides the computer video transmission methods and system of a kind of low bandwidth, wherein, the step of this method includes: that the vision signal of each computer is divided into the identical signal of two-way, is directly presented on computer display screen all the way, and another way is exported as split screen signal；By video switching matrix, the road the m computer video signal arbitrary switch to input is the road the n computer video signal of output；The road the n computer video signal of output is shown in local display；And/or one or more in the road the n computer video signal of output is encoded, it is transmitted to distal end and decodes, and be shown on remote display.Herein described technical solution can effectively reduce delay of the multi-channel video signal when being locally displayed, eliminate compression loss, reduce the resource occupying rate of distal end transmission.
Description
Technical field
This application involves field of information transmission, in particular to the computer video transmission method and system of a kind of low bandwidth.
Background technique
Current computer video information mainly uses the interfaces such as VGA, DVI to transmit, and adopts between main frame and display
With VGA or DVI cable connect, such mode transmission range is close, when transfer number it is more when, transmission range usually 10 meters with
It is interior；Simultaneous transmission mode is usually point to point system, and information is difficult to by different user while using.Make not influencing active user
With while, when need to be transmitted to computer video information distal end in use, generalling use following two transmission mode: 1, it is right
VGA, DVI interface increase branch and driving circuit, enhance the driving capability of signal, this mode can increase transmission range to 100 meters；
2, coding circuit is increased to VGA, DVI interface, is IP signal by VGA signal, DVI Signal coding, by network exchange, transmission distance
It is even farther from 1000 kms can be increased to.1st kind of mode transmission range is close, is transmitted using designated lane, no-delay, is suitble to this
Ground split screen uses；2nd kind of mode long transmission distance, does not need designated lane, and commodity ethernet network channel is used only, due to needing
Corresponding coding, decoding and network exchange process, therefore transmission has delay, while compressed encoding brings the certain journey of signal quality
The reduction of degree is suitble to distal end to use.
When needing, multichannel computer video information is used in local split screen simultaneously and distal end is in use, only with the 1st kind of side
Formula then can not meet remote transmission demand；Only with the 2nd kind of mode, then multi-channel video signal occupies a large amount of Internet resources, simultaneously
Local split screen using when introduce unnecessary delay and compression loss.
Summary of the invention
One of in order to solve the above problem, this application provides the computer video transmission methods and system of a kind of low bandwidth.
According to the first aspect of the embodiment of the present application, a kind of computer video transmission method of low bandwidth is provided, it should
The step of method includes:
The vision signal of each computer is divided into the identical signal of two-way, is directly presented on Computer display all the way
On screen, another way is exported as split screen signal；
By video switching matrix, the road the m computer video signal arbitrary switch of input is regarded for the road the n computer of output
Frequency signal；
The road the n computer video signal of output is shown in local display；And/or the road the n computer of output is regarded
One or more in frequency signal is encoded, and is transmitted to distal end and is decoded, and is shown on remote display.
Preferably, the step of this method further include: impedance is carried out to fractional frequency signal according to the distance of video signal transmission
Match and enhancing is driven to handle.
Preferably, the driving enhancing of every at least 10 meters or more of split screen signal increase.
Preferably, the video switching matrix is the video matrix of m × n.
Preferably, one or more in the computer video signal of the road n encodes, and is transmitted to distal end and solves
Code, and be shown in the step on remote display and include:
To one or more progress IP coding in the computer video signal of the road n；
By being connected to the various channels of the network switch for the video signal transmission after coding to remote subscriber；
The vision signal after this coding is decoded in distal end, and is shown on remote display.
According to the second aspect of the embodiment of the present application, a kind of computer video Transmission system of low bandwidth is provided, it should
System includes:
The vision signal of each computer is divided into the identical signal of two-way, is directly in all the way by multiple multiple branch interfaces
On present computer display screen, another way is exported as split screen signal；
Conversion module, by video switching matrix, the road the m computer video signal arbitrary switch to input is the n of output
Road computer video signal；
The road the n computer video signal of output is shown in local display；And/or the road the n computer of output is regarded
One or more in frequency signal is encoded, and is transmitted to distal end and is decoded, and it will be shown on remote display.
Preferably, system further include: for being encoded to one or more in the computer video signal of the road n
Encoding device.
Preferably, the multiple branch interface is VGA/DVI interface.
Preferably, the driving enhancing of every at least 10 meters or more of split screen signal increase.
Preferably, the video switching matrix is the video matrix of m × n.
Herein described technical solution can effectively reduce delay, elimination compression of the multi-channel video signal when being locally displayed
Loss reduces the resource occupying rate of distal end transmission.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the computer video transmission method of low bandwidth described in this programme；
Fig. 2 shows the schematic diagrames of the computer video Transmission system of low bandwidth described in this programme.
Specific embodiment
In order to which technical solution in the embodiment of the present application and advantage is more clearly understood, below in conjunction with attached drawing to the application
Exemplary embodiment be described in more detail, it is clear that described embodiment be only the application a part implement
Example, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can be combined with each other.
As shown in Figure 1, this programme discloses the computer video information transferring method of a kind of multi input, low bandwidth, the party
Method by newly-increased split screen signal carry out impedance matching and driving enhance, thus avoid split screen using when caused by original signal decline
Subtract, and supports the video signal transmission of long-range split screen.It elaborates below by example to this programme:
The first step is divided into two to computer video signal
Computer video information in local for sole user in use, different according to matched USB interface or DVI interface, lead to
Often only connected between main frame and display using VGA cable or DVI cable.When needs are to computer all the way
After video information split screen distal end is used or is transmitted in use, VGA/DVI interface branch and drive need to be increased for local other users
Dynamic circuit.
Computer video interface branch and driving circuit carry out access of connecting between computer and display.Video interface
Shunt circuit completes the function of input all the way, two-way output, under the premise of not influencing original output all the way, increases in addition all the way
Output signal, increased output signal all the way are the duplication of original output signal.After interface driving circuit completes signal branch
Impedance matching and driving enhancing function, keep the original signal of output unattenuated, while adjusting newly-increased split screen output signal all the way
Reach at least 10 meters or more of driving capability.The driving capability of newly-increased output split screen signal can according to transmission range it is different into
Row adjustment.
Second step switches output to the computer video signal after multi-channel separate screen on demand
Using video switching matrix, video switching matrix is the video matrix of a m × n, i.e., to the road the m computer of input
Vision signal arbitrary switch is the road the n computer video signal of output, and the road the n signal of output uses for local other users.
It can select on demand using signal source in this way.
Third step is to the computer video signal after switching output in local use
Computer video signal after switching output can be used for local other users, be passed after also may be encoded as IP signal
Distal end is transported to use.
When needs are locally in use, computer video signal after only output to switching is connected to display.
4th step is transmitted to distal end to the computer video signal after switching output and uses
When need by this video signal transmission to distal end in use, video decoding/encoding device can be used in this vision signal
One or more carry out IP coding, then can be by being connected to the various channels of the network switch for this video signal transmission
To remote subscriber, operation is decoded using same video decoding/encoding device to this encoded signal in distal end, it can after decoding
Display is connected to be shown.
So far, the computer video information transmission of multi input, low bandwidth is completed.
This programme is transmitted in local video signal transmission process using USB interface or DVI interface, not consumption network band
It is wide；In far-end video transmission process, the partial video signal in the computer video signal of the road n is transmitted on demand, thus
Reduce the use to network bandwidth.
This programme further discloses a kind of computer video Transmission system of low bandwidth, which includes:
The vision signal of each computer is divided into the identical signal of two-way, is directly in all the way by multiple multiple branch interfaces
On present computer display screen, another way is exported as split screen signal；
Conversion module, by video switching matrix, the road the m computer video signal arbitrary switch to input is the n of output
Road computer video signal；
Encoding device encodes one or more in the computer video signal of the road n；
The road n computer video signal is shown in local display；And/or the road n computer video is believed
One or more in number is encoded, and is transmitted to distal end and is decoded, and it will be shown on remote display.
As shown in Fig. 2, being divided from DVI the or VGA signal that main frame exports by video interface branch and driving circuit one
It is two, while after carrying out driving enhancing to the identical signal of two-way, DVI or VGA signal send local display normally to show all the way,
Another way DVI or VGA signal enters video switching matrix.Video switching matrix cuts the road the m DVI or VGA signal of input on demand
The road n DVI or VGA signal are exported after changing.A part in output signal send local display to show, another part enters video volume
Decoder carries out Video coding.Become IP signal after vision signal is encoded, IP signal passes through wire transmission (such as optical fiber) or nothing
Line transmission (such as satellite communication or WiMAX) mode is sent to distal end.IP signal enters Video Codec in distal end and is regarded
Frequency decodes, and decoded signal is for conversion into DVI or VGA signal again, and local display is sent to show.It how defeated thereby realizes
Enter low-bandwidth transmission of the computer video signal simultaneously at local and distal displayed.
This method effectively reduces delay of the multi-channel video signal when being locally displayed, eliminates compression loss, reduces distal end and passes
Defeated resource occupying rate.
The application be according to the method for the embodiment of the present application, the flow chart of equipment (system) and computer program product and/
Or block diagram describes.It should be understood that each process that can be realized by computer program instructions in flowchart and/or the block diagram and/
Or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer program instructions
To general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor to generate one
A machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. a kind of computer video transmission method of low bandwidth, which is characterized in that the step of this method includes:
The vision signal of each computer is divided into the identical signal of two-way, is directly presented on computer display screen all the way
On, another way is exported as split screen signal；
By video switching matrix, the road the m computer video signal arbitrary switch of input is believed for the road the n computer video of output
Number；
The road the n computer video signal of output is shown in local display；And/or the road the n computer video of output is believed
One or more in number is encoded, and is transmitted to distal end and is decoded, and is shown on remote display.
2. computer video transmission method according to claim 1, which is characterized in that the step of this method further include: root
Impedance matching and driving enhancing processing are carried out to fractional frequency signal according to the distance of video signal transmission.
3. computer video transmission method according to claim 2, which is characterized in that every split screen signal increase at least 10
Meter or more driving enhancing.
4. computer video transmission method according to claim 1, which is characterized in that the video switching matrix is m × n
Video matrix.
5. computer video transmission method according to claim 1, which is characterized in that the road the n computer of described pair of output
One or more in vision signal is encoded, and is transmitted to distal end and is decoded, and is shown in the step on remote display and includes:
To one or more progress IP coding in the computer video signal of the road n；
By being connected to the various channels of the network switch for the video signal transmission after coding to remote subscriber；
The vision signal after this coding is decoded in distal end, and is shown on remote display.
6. a kind of computer video Transmission system of low bandwidth, which is characterized in that the system includes:
The vision signal of each computer is divided into the identical signal of two-way, is directly presented on all the way by multiple multiple branch interfaces
On computer display screen, another way is exported as split screen signal；
Conversion module counts the road the m computer video signal arbitrary switch of input for the road n of output by video switching matrix
Calculation machine vision signal；
The road the n computer video signal of output is shown in local display；And/or the road the n computer video of output is believed
One or more in number is encoded, and is transmitted to distal end and is decoded, and it will be shown on remote display.
7. computer video Transmission system according to claim 6, which is characterized in that the system further include: for institute
State one or more encoding device encoded in the computer video signal of the road n.
8. computer video Transmission system according to claim 6, which is characterized in that the multiple branch interface is VGA/DVI
Interface.
9. computer video Transmission system according to claim 6, which is characterized in that every split screen signal increase at least 10
Meter or more driving enhancing.
10. computer video Transmission system according to claim 6, which is characterized in that the video switching matrix be m ×
The video matrix of n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070907.8A CN109640004B (en) | 2019-01-25 | 2019-01-25 | Low-bandwidth computer video transmission method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910070907.8A CN109640004B (en) | 2019-01-25 | 2019-01-25 | Low-bandwidth computer video transmission method and system |
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| CN109640004A true CN109640004A (en) | 2019-04-16 |
| CN109640004B CN109640004B (en) | 2021-11-30 |
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Cited By (1)
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| CN112165633A (en) * | 2020-09-28 | 2021-01-01 | 山东超越数控电子股份有限公司 | Method and equipment for display signal remote transmission and multi-screen notebook computer |
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| CN109640004B (en) | 2021-11-30 |
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