CN106921834A - KVM light matrix switching systems - Google Patents
KVM light matrix switching systems Download PDFInfo
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- CN106921834A CN106921834A CN201710191100.0A CN201710191100A CN106921834A CN 106921834 A CN106921834 A CN 106921834A CN 201710191100 A CN201710191100 A CN 201710191100A CN 106921834 A CN106921834 A CN 106921834A
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- 238000006243 chemical reaction Methods 0.000 claims description 13
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The present invention discloses a kind of embodiment of the present invention and provides a kind of KVM light matrix switching system.In the system, transmitting terminal includes the first signal receiving/transmission device and at least 2 first optical modules；Wherein, the first signal receiving/transmission device is connected with least 2 first optical modules, for vision signal to be converted into packet and key mouse signal is received；At least 2 first optical modules are used to for packet to be converted into optical signal.Receiving terminal includes secondary signal R-T unit and at least 2 second optical modules；Wherein, secondary signal R-T unit is connected with least 2 second optical modules, for determining data link according to the connection status and priority of at least two data link, and packet is converted into vision signal and key mouse signal is sent；At least 2 second optical modules are used to convert optical signals into packet.The data link that switch device is set up between transmitting terminal and receiving terminal.Thus, the embodiment of the present invention realizes the mixed insertion function of optical moment array 1 system, improves the ease for operation of optical moment array 1 system implementation.
Description
Technical field
Shown the present invention relates to audio frequency and video and control technology field, more particularly, to a kind of KVM light matrix switching system.
Background technology
Audio frequency and video show and control, the field such as security protection, matrix switch system is one of essential equipment, its most base
This application function is mutually to switch various types of audio-video signals in specific usage scenario.
In traditional video matrix switching system (abbreviation matrix, hybrid matrix, analog matrix or character matrix), generally
It is the input port of all types of video source (including HDMI, DVI, VGA etc.) connection matrix switching systems, all types of output ports
(interface of type such as including HDMI, DVI, VGA) connects display device, and input port is built with output port by control software
Vertical connectivity is so as to realize the input video source of any kind to the functional characteristic of the video frequency output of any kind.This realization side
Formula needs direct-connected all kinds of video interface lines, it is impossible to meet the demand of long range audio video transmission；The standby of data link cannot be met
Part and two-node cluster hot backup function, the safety and reliability of system cannot ensure.Various types of input and output boards are confined to, it is right
Production maintenance and construction and follow-up user be not strong using huge inconvenience, ease for use is brought.
It is that all types of vision signals are converted into optical signal, incoming Inverse problem in common fiber matrix switching system
After system input mouthful is converted into electric signal, the output port for being connected to system by switching is converted into optical signal, and optical signal is passed
It is defeated that optical signal is reduced into electric signal to reception device.This design simply meets the applied field of the long-distance transmissions of video
Scape, but due to being unable to link backup, it is impossible to dual-host backup, therefore the demand of safety and reliability can not be met；Need artificial
Differentiation input slot position input port or output magazine position output port.
It is well known that so-called matrix switch system is the switching system for having a large amount of ports, this produces and applies to equipment
Work and later stage application equally bring huge inconvenience.Do not possess distal end KVM (key, video, mouse are keyboard, video and mouse)
Handoff functionality, and do not possess the matrix system of state echo function and can not meet the need for user locally switches far-end video source.
Field of broadcast televisions, audio frequency and video show control field, security protection and military field etc. to the safety and reliability of equipment, construction and
The simplification of operation has requirement higher, and source and display end are often distant.
In view of this, it is special to propose the present invention.
The content of the invention
In order to solve above mentioned problem of the prior art, the technical problem for solving how to realize mixed insertion function is, carried
For a kind of KVM light matrix switching system.
To achieve these goals, there is provided following technical scheme：
A kind of KVM light matrix switching system, the system includes transmitting terminal, receiving terminal and switch device；Wherein：
The transmitting terminal includes：
First signal receiving/transmission device, is connected with least 2 first optical modules, for by vision signal be converted into packet with
And receive key mouse signal；
At least 2 first optical modules, for the packet to be converted into optical signal；
The receiving terminal includes：
Secondary signal R-T unit, is connected with least 2 second optical modules, for the connection according at least two data link
State and priority determine a data link, and the packet is converted into vision signal and key mouse signal is sent；
At least 2 second optical modules, for the optical signal to be converted into the packet；
The switch device, at least two Data-Links described in setting up between the transmitting terminal and the receiving terminal
Road.
Preferably, any at least 2 first optical modules has the first transmission interface and the first receiving interface；
First signal receiving/transmission device is specifically included：
First processor, is connected with least 2 first optical ports, for the vision signal to be packed, generates the number
According to bag, and key mouse signal is received, and the key mouse signal is sent to the first controller；
First controller, for by the key mouse signal transmission to video source, to be shown；
At least 2 first optical ports, it is first transmission interface respectively with least 2 first optical modules, described
First receiving interface is connected, and the packet is converted into optical signal for coordinating with first transmission interface, with described the
The optical signal is converted into the packet by the cooperation of one receiving interface, and realization backups each other.
Preferably, any at least 2 second optical modules has the second transmission interface and the second receiving interface；
The secondary signal R-T unit is specifically included：
Second processing device, connection status and priority at least two data link according to determine a number
According to link, and receive the packet from least 2 second optical ports and unpacked, with output display, and key mouse signal is entered
Row packing is simultaneously sent to second transmission interface bag；
Second controller, for receiving the key mouse signal and sending it to the second processing device；
At least 2 second optical ports, it is second transmission interface respectively with least 2 second optical modules, described
Second receiving interface is connected, and the packet is converted into the optical signal for coordinating with second transmission interface, with institute
State the cooperation of the second receiving interface and the optical signal is converted into the packet, and realization backups each other.
Preferably, the second processing device is additionally operable to according to data packet format, carries out subpackage to the packet, and verify
Whether the packet is complete, if it is, each subpackage being constituted into frame of video and being exported.
Preferably, the second processing device is additionally operable to when the packet is imperfect, then at least 2 second described in triggering
Optical port carries out active and standby conversion.
Preferably, the second processing device is additionally operable to, when active and standby conversion is carried out, current frame of video be freezed, directly
To being switched to another data link and receiving complete frame of video.
Preferably, the second processing device is additionally operable to be superimposed a new figure layer in the figure layer of the vision signal after unpacking；
Keyboard is breathed out the figure layer after superposition using Macintosh.
Preferably, the switch device is specifically included：
Multiple IO cards, are connected with the transmitting terminal, receiving terminal respectively, for transmitting the vision signal and key mouse letter
Number；
Switch unit, for switching the multiple IO cards；
CPU, for controlling the multiple IO cards and the switch unit, to ensure the vision signal
With connectedness of the key mouse signal on the multiple IO cards.
Preferably, keyboard, breathes out log-on message, and actively trigger the CPU and communicated therewith；
The CPU, in response to the communication, and verifies the log-on message, if the log-on message
Match somebody with somebody, then send to first signal receiving/transmission device video source signal in place, and in the corresponding port shape of echo interface display
State.
Preferably, the multiple IO cards being connected with the receiving terminal include：
3rd optical port, is connected with the 3rd optical module；
3rd processor, for that the electric signal come through secondary signal R-T unit transmission will be parsed and will solved
Analysis result is transmitted to fourth processor, is additionally operable to send the electric signal come by fourth processor transmission to the 3rd optical mode
Block；
3rd optical module, is also connected with the secondary signal R-T unit, for that will be changed by the key mouse signal
The optical signal for obtaining is converted into electric signal and transmits it to the 3rd processor, is additionally operable to be sent out by the 3rd processor
The electric signal sent is converted into optical signal and sends it to the secondary signal R-T unit；
The multiple IO cards being connected with the transmitting terminal include：
4th optical port, is connected with the 4th optical module；
Fourth processor, for the analysis result to be transmitted to the 4th optical module, is additionally operable to by vision signal
The electric signal obtained through opto-electronic conversion is sent to the 3rd processor；
4th optical module, optical signal is converted into for the analysis result, and the optical signal is sent to described
First signal receiving/transmission device, is additionally operable to for the optical signal being converted to by the vision signal to be converted into electric signal, and will be described
Electric signal is sent to the fourth processor.
The embodiment of the present invention provides a kind of KVM light matrix switching system.The system is set in transmitting terminal and receiving terminal respectively
First signal receiving/transmission device and secondary signal R-T unit, and at least two first optical modules and at least two second optical modes
Block, then, is switched over by switch device between transmitting terminal and receiving terminal to data link.Therefore it may only be necessary to
A kind of board of Uniting, is no longer limited to the direction of input and output, i.e., do not repartition input slot position, input port and defeated
Go out groove position, output port, be to be used as input port to make by being communicated come automatic mating ports with the optical signal converting apparatus for accessing
With or used as output port.Thus, the embodiment of the present invention realizes the mixed insertion function of optical moment array 1 system, and user can be certainly
Input port and output port are defined, can be optionally plugged into optical signal converting apparatus in optical moment array 1 system by engineering construction personnel,
So as to the out tape to optical moment array 1 system carrys out great ease for operation.
Brief description of the drawings
Fig. 1 is the structural representation of the KVM light matrix switching systems according to the embodiment of the present invention；
Fig. 2 is the structural representation of the first signal receiving/transmission device according to the embodiment of the present invention；
Fig. 3 is the structural representation of the secondary signal R-T unit according to the embodiment of the present invention；
Fig. 4 is the structural representation of the KVM light matrix switching systems according to another embodiment of the present invention.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little implementation methods are used only for explaining know-why of the invention, it is not intended that limit the scope of the invention.
Show in the fields such as control field, security protection to the simple of security, reliability, construction and operation in audio frequency and video to meet
Property etc. each side demand, the embodiment of the present invention provides a kind of KVM light matrix switching system.As shown in figure 1, the system 10 includes
Transmitting terminal 11, receiving terminal 12 and switch device 13.Wherein, transmitting terminal 11 includes：First signal receiving/transmission device 111 with least
2 first optical modules 112 are connected, for vision signal to be converted into packet and key mouse signal is received.At least 2 first optical modes
Block 112 is used to for packet to be converted into optical signal.Receiving terminal 12 includes：Secondary signal R-T unit 121 and at least 2 second light
Module 122 is connected, for determining a data link according to the connection status and priority of at least two data link, and by data
Bag is converted into vision signal and sends key mouse signal.At least 2 second optical modules 122 are used to convert optical signals into packet.
Switch device 13 is used at least two data link set up between transmitting terminal and receiving terminal.
In the above-described embodiments, KVM refers to key keyboards, video videos, the abbreviation of mouse mouses.Transmitting terminal is also key
The receiving terminal of mouse signal.Receiving terminal is also the transmitting terminal of key mouse signal.
Here, KVM light matrix switching system is also referred to as optical moment, light matrix or light matrix switching system, relevant optical moment,
The theme of light matrix or light matrix switching system also should be within the scope of the present invention.
Above-mentioned first optical module and the second optical module can be single mode or multi-mode optical module.Above-mentioned optical module is matched somebody with somebody in couples
Put.
The present embodiment is by using above-mentioned technical proposal, it is only necessary to a kind of board of Uniting, is no longer limited to input
The direction of output, i.e., do not repartition input slot position, input port and output magazine position, output port, believes by with the light for accessing
It is to be used as input port or used as output port that the communication of number conversion equipment carrys out automatic mating ports.Thus, this hair
Bright embodiment realizes the mixed insertion function of optical moment array 1 system, and user can be with self-defined input port and output port, engineering construction
Can be optionally plugged into optical signal converting apparatus in optical moment array 1 system by personnel, so as to come great to the out tape of optical moment array 1 system
Ease for operation.
In an optional embodiment, any in above-mentioned at least 2 first optical modules has the first transmission interface and
One receiving interface.As shown in Fig. 2 the first signal receiving/transmission device 20 is specifically included：First processor 22, the first controller 24 and extremely
Few 2 first optical ports (26,28).Wherein, first processor is connected with least 2 first optical ports, for vision signal to be beaten
Bag, generates packet, and receives key mouse signal, and key mouse signal is sent to the first controller.First controller is used for will
Key mouse signal transmission to video source, to be shown.At least 2 first optical ports respectively with the first of at least 2 first optical modules the hair
Send interface, the first receiving interface to be connected, packet is converted into optical signal for coordinating with the first transmission interface, received with first
Interference fit converts optical signals into packet, and realization backups each other.
Wherein, optical module has the interface of both direction, and one of them is transmission interface, and another is receiving interface.Hair
Interface is sent to convert the electrical signal to optical signal and be transmitted by optical fiber.Receiving interface receives the optical signal from optical fiber, and
It is converted into electric signal.Connected by optical fiber between two paired optical modules, such that it is able to realize the two-way biography of optical signal
It is defeated.
For example, so that the first optical module and the second optical module are organized in pairs as an example, those skilled in the art will be understood that
Here " first " and " second " is just for the sake of two optical modules of differentiation.
Wherein, the first optical module and the second optical module are connected by two optical fiber.The transmission interface of the first optical module passes through
Optical fiber is connected to the receiving interface of the second optical module；The receiving interface of the first optical module is connected to the second optical module by optical fiber
Transmission interface, so as to form the transmitting-receiving circuit of optical signal.
The signal receiving/transmission device of transmitting terminal and receiving terminal has at least two optical ports respectively.At least two optical port can divide
It is not connected with two interfaces of optical module, so that at least two optical ports of the signal receiving/transmission device of transmitting terminal are to backup each other
Two interfaces, at least two optical ports of the signal receiving/transmission device of receiving terminal are mutually redundant two interfaces.
Here, the purpose of backup is to improve the stability and security of KVM light matrix switching systems.Assuming that signal is received
Transmitting apparatus have the first optical port and the second optical port.If the first optical port breaks down, or connection the first optical port optical fiber break, also or
It is that the optical module for accessing the first optical port breaks down.So, the transmission link or communication link where the first optical port are unable to normal transmission
Data, the phenomenon for reflecting is exactly that video cannot be shown, audio cannot be played, key mouse cannot be operated.And the present invention passes through
The backup of the first optical port and the second optical port, realizes when transmission link where the first optical port or communication link occur abnormal, second
Link where optical port can be enabled automatically.Here, the second optical port is exactly the backup link of the first optical port.Similarly, if the second optical port
There is exception in the link at place, and the link where the first optical port can be enabled automatically.At this moment, the first optical port is exactly the standby of the second optical port
Part link.So, the first optical port and the second optical port backup each other, and thus achieve any link and break down, another
Link can automatically replace the link of the failure and ensure the unimpeded of transmission link or communication link.
Above-mentioned first processor for example can be PLD, digital signal processor, application specific integrated circuit device
Part etc., but it is not limited to this.
After the first processor of the first signal receiving/transmission device receives effective video signal, the vision signal is entered into line number
According to packing, then packet is sent to optical module by least two optical ports, the transmission interface of optical module again turns packet
It is changed to optical signal and is sent to switch device by optical fiber.
Wherein, effective video signal can be various types of video source signals such as HDMI, DVI, VGA, SDI.Video
Source can be computer.Video source can be connected by USB interface with signal receiving/transmission device.
Above-described embodiment sends data packets to switching control and sets simultaneously by least two optical ports of signal receiving/transmission device
It is standby, it is achieved thereby that backup functionality of the optical signal in transmitting terminal, thus, efficiently solve because transmitting terminal optical fiber such as fractures at the reason
The problem of the data open circuit for causing.
In addition, the embodiment of the present invention may also connect to two switch devices in same LAN, so that
Dual-host backup function of the optical signal in transmitting terminal can be realized.Thus, solve because KVM light matrix switching systems delay machine and caused by
Data open circuit problem, further improve the safety and reliability of KVM light matrix switching systems.
Those skilled in the art should be able to know, in order to ensure vision signal transmitting terminal can normal work in actual applications
Make, it can also include video interface data wire, USB data line and optical fiber.
In an optional embodiment, there is the second transmission interface and second to connect for any at least 2 second optical modules
Receive interface.As shown in figure 3, above-mentioned secondary signal R-T unit is specifically included：Second processing device, second controller and at least 2
Two optical ports.Wherein, second processing device 32 is used to determine a data according to the connection status and priority of at least two data link
Link, and receive packet from least 2 second optical ports and unpacked, with output display, and key mouse signal is packed
And send to the second transmission interface the bag.Second controller 34 is used to receive key mouse signal and sends it to second processing
Device.At least 2 second optical ports (36,38) respectively with least the second transmission interface of 2 second optical modules, the second receiving interface phase
Even, for packet to be converted into optical signal with the cooperation of the second transmission interface, coordinate with the second receiving interface and change optical signal
Backuped each other into packet, and realization.
In the present embodiment, the explanation about second processing device, second controller and the second optical port may refer to the first treatment
The explanation of device, the first controller and the first optical port, will not be repeated here.
Second controller is used to receive key mouse signal (i.e. keyboard and mouse data), and the key mouse signal is sent at second
Reason device.In actual applications, second controller can receive key mouse signal by USB interface.Second processing device receives key
After mouse signal, carried out data and pack and send to optical module.Then, the transmission interface of optical module is by the packet after packing
Optical signal is converted into send to switch device.
Those skilled in the art should be able to know, in order to ensure video reception end can normal work in actual applications
Make, the embodiment of the present invention can also include video interface data wire, mouse, keyboard and optical fiber.Video reception end and display
Device, keyboard and mouse set up connection.Keyboard and mouse data are received and incited somebody to action by USB interface by control unit in signal receiving/transmission device
Data pass to processing unit, and the processing unit transmits data to optical module, and the optical module converts the data into optical signal
Send.
At least two optical ports of first signal receiving/transmission device and secondary signal R-T unit of transmitting terminal and receiving terminal pass through
Optical module is connected with any two port of switch device, is closed such that it is able to set up connection between transmitting terminal and receiving terminal
System, and then the dual link backup of optical signal can be realized in receiving terminal.I.e.：The optical fiber of any transmission link/communication link
Or the normal transmission of data can be ensured after optical module failure.Thus, improve the reliability of KVM light matrix switching systems
Property.
In an optional embodiment, above-mentioned second processing device 32 is additionally operable to, according to data packet format, enter packet
Row subpackage, and verify whether packet is complete, if it is, each subpackage being constituted into frame of video and being exported.
In receiving terminal, the optical module being connected with secondary signal R-T unit receives optical signal and the optical signal is converted into electricity
Signal.Then, the second processing device of secondary signal R-T unit carries out data unpacking to the electric signal.If what unpacking was obtained regards
Frequency signal is effective video signal, then the vision signal is sent to display and shown by second processing device.
In another optional embodiment, above-mentioned second processing device 32 is additionally operable to when packet is imperfect, then trigger
At least 2 second optical ports carry out active and standby conversion.
In another optional embodiment, above-mentioned second processing device 32 is additionally operable to when active and standby conversion is carried out, will be current
Frame of video freezed, untill being switched to another data link and receiving complete frame of video.
In the present embodiment, second processing device freezes the frame of video of current output when vision signal switching action is detected
And export vision signal after the completion of the vision signal switching action.Thus, it is possible to realize the nothing between different resolution video
Seaming and cutting are changed, and do not have blank screen, the phenomenon of flower screen.
In another optional embodiment, in order to realize the echo of connection status, based on map overlay know-why, on
Second processing device 32 is stated to be additionally operable to be superimposed a new figure layer in the figure layer of the vision signal after unpacking；Keyboard will be folded using Macintosh
Plus after figure layer exhalation.
The course of work of video echo is exemplified below.
As a example by the login interface of display is breathed out by keyboard, actively initiated and switch device between by keyboard
Communication.Wherein, switch device includes central processing unit, and the central processing unit is set up communication and is connected with keyboard.Keyboard leads to
Cross the mode interrupted and trigger central processing unit.After the central processing unit inquires communication bag, log-on message is verified.If the login
Information matches, the then video source signal in place that will belong to the user is sent to the signal receiving/transmission device of receiving terminal, and on echo circle
Face shows corresponding port status.So, selected by keyboard it is corresponding belong to currently logged on user in bit port, can be with
The switching between different video source is provided, i.e.,：The video source signal of opposite end is switched to current display, or, by opposite end
Video source signal be switched to current display and current key mouse passage be switched to the video source of opposite end, so as to realize profit
The purpose in far-end video source is controlled with authority with local key mouse.
In an optional embodiment, switch device is specifically included：Multiple IO cards, switch unit and center treatment
Unit.Wherein, multiple IO cards are connected with transmitting terminal, receiving terminal respectively, for transmission video signal and key mouse signal.Switch unit
For switching multiple IO cards.CPU is used to control multiple IO cards and switch unit, to ensure vision signal and key
Connectedness of the mouse signal on multiple IO cards.
Wherein, above-mentioned CPU can be controlled to optical module and signal receiving/transmission device.For example：Center treatment
Unit realizes the control to optical module and signal receiving/transmission device by RS485 universal serial bus.CPU can also pass through
SPI controlling bus control switch unit.
In an optional embodiment, keyboard exhalation log-on message, and actively trigger CPU and enter therewith
Row communication.CPU verifies log-on message in response to communication, if logged on information matches, then by video source in place
Signal is sent to the first signal receiving/transmission device, and in the corresponding port status of echo interface display.
In an optional embodiment, the multiple IO fixture bodies being connected with receiving terminal include：3rd optical port, the 3rd treatment
Device and the 3rd optical module.Wherein, the 3rd optical port is connected with the 3rd optical module.3rd processor is used for will be to receiving and dispatching through secondary signal
The electric signal that device transmission comes is parsed and is transmitted to fourth processor analysis result, is additionally operable to be passed by fourth processor
Defeated next electric signal is sent to the 3rd optical module.3rd optical module is also connected with secondary signal R-T unit, for will be by key mouse
The optical signal that signal is converted to is converted into electric signal and transmits it to the 3rd processor, is additionally operable to be sent out by the 3rd processor
The electric signal sent is converted into optical signal and sends it to secondary signal R-T unit.The multiple IO Ka Bao being connected with transmitting terminal
Include：4th optical port, fourth processor and the 4th optical module.Wherein, the 4th optical port is connected with the 4th optical module.Fourth processor is used
Transmitted to the 4th optical module in by analysis result, be additionally operable to be sent to through the electric signal that opto-electronic conversion is obtained by vision signal
Three processors.4th optical module is converted into optical signal for analysis result, and sends optical signals to the first signal receiving/transmission device,
It is additionally operable to for the optical signal being converted to by vision signal to be converted into electric signal, and electric signal is sent to fourth processor.
Operation principle of the invention is described in detail with preferred embodiment with reference to Fig. 4.
In the present embodiment, the optical module that definition is connected with the signal receiving/transmission device of transmitting terminal is the first optical module, with switching
The connected optical module of the IO cards of control device is the 3rd optical module, and the optical module being connected with the signal receiving/transmission device of receiving terminal is the
Two optical modules.
As shown in figure 4, video source 401 passes through video interface line by the first signal receiving/transmission device of transmission of video to transmitting terminal
402.The vision signal that the first processor 4021 of the first signal receiving/transmission device 402 will be received is packed, and with data flow
Form video data bag is sent to the first optical module (403,404), the transmission interface of the first optical module (403,404) will be regarded
Frequency packet is converted into optical signal, and sends it to the 3rd optical module of the IO cards (4051) in switch device 405
(40511).Then, the optical signal that the 3rd optical module (40511) will be received changes into electric signal, and IO cards are sent it to afterwards
4051 the 3rd processor 40512.Here, the signal receiving/transmission device 402 for being transmitting terminal that the 3rd processor 40512 is received
In first processor 4021 send video signal flow.3rd processor 40512 is parsed by the packet header of bag form and bag tail
Go out complete video data and cached, then, send it to the signalling channel of switch device 405.Due to
3rd processor 40512 caches a complete video data bag, so, the video data that it sends always one it is complete effectively
Packet.Again because bag form supports variable-length, so, in the case where the speed of video data stream is certain, the present invention
The KVM light matrix switching system of proposition can support the video format of different refresh rates.In switch device 405, switching
The video data bag that the IO cards 4051 being connected with transmitting terminal are received is switched to unit 4053 the IO cards 4052 being connected with receiving terminal.
The 3rd processor 40522 pairs in the IO cards 4052 being connected with receiving terminal switches the video data bags come and detects, and should
Video data bag is sent at least two optical modules (406,407) being connected with receiving terminal.Then, the optical module is by video data
Bag is converted into optical signal and is sent by transmission interface at least two second optical modules (406,407) of receiving terminal.This second
Optical module (406,407) converts optical signals into electric signal and transmits it to second processing device 4081 again.Second processing device
4081 according to the connection status of circuit, and according to data link/transmission link or the priority level of communication link, selects one to lead to
Road is main channel, and then, according to data packet format, the electric signal (video data stream) after optical module (406,407) is changed enters
Row subpackage, and verify whether video data stream is complete packet.If it is, video data stream is write into current write-in caching.
Then, then by each subpackage one frame of video of composition cached and verified whether it is complete packet.If it is, will
The packet of caching is changed into caching to be output.Caching to be output is exported the image as normal display.If
Video data stream is not complete packet, or current ink exception is (for example：Light fractures, optical module is abnormal etc.), then or
Another priority of link of person actively becomes high, then second processing device 4081 triggers the signal receiving/transmission device 408 of receiving terminal
Optical port carries out active and standby conversion.When active and standby conversion is carried out, the second processing device 4081 of the secondary signal R-T unit 408 of receiving terminal
Current frame of video is freezed, i.e., the last frame video before masterslave switchover can be shown on display 409, until being switched to
Another transmission link and untill receiving complete frame of video, then, the complete video frame that will be received is exported to display, from
And, the seamless switching of active and standby process is realized, the process of blank screen, flower screen and scaling is can't see among these.
Again as shown in figure 4, key mouse signal (data flow of keyboard and mouse) is just reverse with video signal flow.Keyboard 411,
Mouse 410 is connected to the USB interface of the secondary signal R-T unit 408 of receiving terminal by USB.Secondary signal R-T unit 408
Second controller 4082 periodically gather usb data, and send it to second processing device 4081, then, second processing
Key mouse signal is packed and is sent to the second optical module (406,407) by device 4081.Wherein, to the packing manner of key mouse signal
Can be by the way of being packed to vision signal.The key mouse signal that at least two second optical modules (406,407) will be packed
At least two optical modules 40521 connected to the IO cards 4052 of switch device 405 are sent after being converted into optical signal.Receiving
Transmission is between optical port in the optical port of the secondary signal R-T unit 408 at end and the IO cards 4052 of switch device 405
Identical data, so, form the dual link backup of key mouse data packet stream.Therefore, the light for being connected with IO cards (4051,4052)
Module can receive key mouse signal all the time.The 3rd optical module 40521 being connected with IO cards 4052 sends to the 3rd key mouse signal
Processor 40522.Key mouse signal is carried out into subpackage according to bag form for the processor 40522 and whether checking key mouse signal is complete
Packet, and all the time cache a complete packet.Then, the processor 40522 sends complete key mouse packet
To switch unit 4053 data channel and key mouse packet transmitted to the 3rd treatment of the IO cards 4051 being connected with transmitting terminal
Device 40512.The processor 40512 transmits to the 3rd optical module (40511,40512) being connected with transmitting terminal key mouse packet
Carry out opto-electronic conversion.The optical signal obtained after conversion is sent to be connected with the first signal receiving/transmission device 402 the of transmitting terminal
One optical module (403,404).First optical module (403,404) converts optical signals into electric signal and sends to the electric signal
The first processor 4021 of one signal receiving/transmission device 402.Then, first processor 4021 is according to the connective and preferential of link
Level, one link of selection as key mouse signal receives link, the key mouse signal stream subpackage that will be received and inspection data bag
Integrality, then, complete key mouse signal bag is sent to the first controller 4022, and the first controller 4022 passes through key mouse signal
USB interface is transmitted to video source 401 (for example：Computer).At this moment, can be in video source 401 it can be seen that representing mouse
Symbol, thus, video source 401 can be just operated by keyboard 411 and mouse 410.
It should be noted that the determination of above-mentioned priority can preset.For example, can be received with the secondary signal of receiving terminal
Any optical port of transmitting apparatus is high priority port, then can vision signal of the preferential receipt from designated port.
Those skilled in the art will be understood that term " first ", " second ", " the 3rd " in text etc. are not construed as to this hair
The limitation of bright protection domain.
So far, combined preferred embodiment shown in the drawings describes technical scheme, but, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.The choosing of embodiment
Select and description is in order to most preferably illustrate principle of the invention and its practical application, so that others skilled in the art can
Understand various embodiments of the present invention and be suitable to the specific various modifications expected from.Embodiments of the invention can omit above-mentioned
Some technical characteristics in technical characteristic, only solve partial technical problems present in prior art.And, described technology
Feature can be combined.On the premise of without departing from principle of the invention, those skilled in the art can be to related skill
Art feature makes equivalent change or replacement, and the technical scheme after these are changed or replace it falls within protection model of the invention
Within enclosing.
Claims (10)
1. a kind of KVM light matrix switching system, it is characterised in that the system sets including transmitting terminal, receiving terminal and switching control
It is standby；Wherein：
The transmitting terminal includes：
First signal receiving/transmission device, is connected with least 2 first optical modules, for vision signal being converted into packet and being connect
Receive key mouse signal；
At least 2 first optical modules, for the packet to be converted into optical signal；
The receiving terminal includes：
Secondary signal R-T unit, is connected with least 2 second optical modules, for the connection status according at least two data link
And priority determines a data link, and the packet is converted into vision signal and key mouse signal is sent；
At least 2 second optical modules, for the optical signal to be converted into the packet；
The switch device, at least two data link described in setting up between the transmitting terminal and the receiving terminal.
2. KVM light matrix switching system according to claim 1, it is characterised in that at least 2 first optical modules
Any there is the first transmission interface and the first receiving interface；
First signal receiving/transmission device is specifically included：
First processor, is connected with least 2 first optical ports, for the vision signal to be packed, generates the data
Bag, and key mouse signal is received, and the key mouse signal is sent to the first controller；
First controller, for by the key mouse signal transmission to video source, to be shown；
At least 2 first optical ports, respectively with first transmission interface, described first of at least 2 first optical modules
Receiving interface is connected, and the packet is converted into optical signal for coordinating with first transmission interface, is connect with described first
Receive Interference fit and the optical signal is converted into the packet, and realization backups each other.
3. KVM light matrix switching system according to claim 1, it is characterised in that at least 2 second optical modules
Any there is the second transmission interface and the second receiving interface；
The secondary signal R-T unit is specifically included：
Second processing device, connection status and priority at least two data link according to determine a Data-Link
Road, and receive the packet from least 2 second optical ports and unpacked, with output display, and key mouse signal is beaten
Wrap and send to second transmission interface bag；
Second controller, for receiving the key mouse signal and sending it to the second processing device；
At least 2 second optical ports, respectively with second transmission interface, described second of at least 2 second optical modules
Receiving interface is connected, and the packet is converted into the optical signal for coordinating with second transmission interface, with described the
The optical signal is converted into the packet by the cooperation of two receiving interfaces, and realization backups each other.
4. KVM light matrix switching system according to claim 3, it is characterised in that the second processing device is additionally operable to root
According to data packet format, subpackage is carried out to the packet, and verify whether the packet is complete, if it is, by each subpackage
Composition frame of video is simultaneously exported.
5. KVM light matrix switching system according to claim 3, it is characterised in that the second processing device is additionally operable to
When the packet is imperfect, then at least 2 second optical ports described in triggering carry out active and standby conversion.
6. KVM light matrix switching system according to claim 5, it is characterised in that the second processing device is additionally operable to
When carrying out active and standby conversion, current frame of video is freezed, until being switched to another data link and receiving complete regarding
Untill frequency frame.
7. KVM light matrix switching system according to claim 3, it is characterised in that the second processing device is additionally operable to
A new figure layer is superimposed in the figure layer of the vision signal after unpacking；
Keyboard is breathed out the figure layer after superposition using Macintosh.
8. KVM light matrix switching system according to claim 1, it is characterised in that the switch device is specifically wrapped
Include：
Multiple IO cards, are connected with the transmitting terminal, receiving terminal respectively, for transmitting the vision signal and the key mouse signal；
Switch unit, for switching the multiple IO cards；
CPU, for controlling the multiple IO cards and the switch unit, to ensure the vision signal and institute
State connectedness of the key mouse signal on the multiple IO cards.
9. KVM light matrix switching system according to claim 8, it is characterised in that
Keyboard, breathes out log-on message, and actively trigger the CPU and communicated therewith；
The CPU, in response to the communication, and verifies the log-on message, if the log-on message is matched,
Then video source signal in place is sent to first signal receiving/transmission device, and in the corresponding port status of echo interface display.
10. KVM light matrix switching system according to claim 8, it is characterised in that
The multiple IO cards being connected with the receiving terminal include：
3rd optical port, is connected with the 3rd optical module；
3rd processor, for will be parsed to the electric signal come through secondary signal R-T unit transmission and ties parsing
Fruit is transmitted to fourth processor, is additionally operable to send the electric signal come by fourth processor transmission to the 3rd optical module；
3rd optical module, is also connected with the secondary signal R-T unit, for that will be converted to by the key mouse signal
Optical signal be converted into electric signal and transmit it to the 3rd processor, be additionally operable to be sent by the 3rd processor
Electric signal be converted into optical signal and send it to the secondary signal R-T unit；
The multiple IO cards being connected with the transmitting terminal include：
4th optical port, is connected with the 4th optical module；
Fourth processor, for the analysis result to be transmitted to the 4th optical module, be additionally operable to by by vision signal through light
The electric signal that electricity is converted to is sent to the 3rd processor；
4th optical module, is converted into optical signal, and the optical signal is sent to described first for the analysis result
Signal receiving/transmission device, is additionally operable to for the optical signal being converted to by the vision signal to be converted into electric signal, and by the telecommunications
Number send to the fourth processor.
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| CN201710191100.0A CN106921834A (en) | 2017-03-28 | 2017-03-28 | KVM light matrix switching systems |
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|---|---|---|---|
| CN201710191100.0A CN106921834A (en) | 2017-03-28 | 2017-03-28 | KVM light matrix switching systems |
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| CN107885349A (en) * | 2017-12-14 | 2018-04-06 | 郑州云海信息技术有限公司 | A kind of server KVM integrated systems |
| CN108234942A (en) * | 2017-12-14 | 2018-06-29 | 中国北方车辆研究所 | A kind of high-bandwidth video switching device |
| CN110149149A (en) * | 2019-05-14 | 2019-08-20 | 北京小鸟科技股份有限公司 | Communication module and KVM switching equipment, system for KVM switching equipment |
| CN110493570A (en) * | 2019-08-14 | 2019-11-22 | 北京小鸟科技股份有限公司 | Photocell matrix formula KVM attends a banquet cooperative system and its operating method |
| CN111866405A (en) * | 2020-07-08 | 2020-10-30 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Video matrix equipment based on optical fiber transmission |
| CN111930244A (en) * | 2020-07-08 | 2020-11-13 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Multifunctional optical fiber transmission KVM remote control management system |
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| CN112839186A (en) * | 2019-11-25 | 2021-05-25 | 宏正自动科技股份有限公司 | Data cross point matrix system |
| CN115086579A (en) * | 2022-08-19 | 2022-09-20 | 芯见(广州)科技有限公司 | Video matrix redundancy backup method and device, terminal equipment and storage medium |
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| CN111930244B (en) * | 2020-07-08 | 2023-02-17 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Multifunctional optical fiber transmission KVM remote control management system |
| CN111930244A (en) * | 2020-07-08 | 2020-11-13 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Multifunctional optical fiber transmission KVM remote control management system |
| CN112436885B (en) * | 2021-01-27 | 2021-05-11 | 北京小鸟科技股份有限公司 | Optical fiber link mutual backup method and system based on KVM (keyboard video mouse) seat |
| CN112436885A (en) * | 2021-01-27 | 2021-03-02 | 北京小鸟科技股份有限公司 | Optical fiber link mutual backup method and system based on KVM (keyboard video mouse) seat |
| CN115086579A (en) * | 2022-08-19 | 2022-09-20 | 芯见(广州)科技有限公司 | Video matrix redundancy backup method and device, terminal equipment and storage medium |
| CN116743243A (en) * | 2023-08-16 | 2023-09-12 | 广东保伦电子股份有限公司 | Optical fiber link mutual backup method and system based on KVM seat |
| CN116743243B (en) * | 2023-08-16 | 2023-11-17 | 广东保伦电子股份有限公司 | Optical fiber link mutual backup method and system based on KVM seat |
| CN117714736A (en) * | 2023-12-12 | 2024-03-15 | 广东保伦电子股份有限公司 | Video data transmission method, system and storage medium |
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