CN105208298B - A kind of matrix switch system and Inverse problem method for multi-format video signal switching - Google Patents
A kind of matrix switch system and Inverse problem method for multi-format video signal switching Download PDFInfo
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Abstract
The invention discloses a kind of matrix switch systems and Inverse problem method for multi-format video signal switching, the system comprises sent to identify that the vision signal of multiple format converts thereof into unified optical signal to light matrix host, and receive the fibre optical transmission converter of the optical signal form control data of reverse transfer；To complete vision signal converting transmission process and be synchronized during vision signal converting transmission is carried out by light matrix host of the control data conversion corresponding with vision signal into reverse transfer after optical signal to fibre optical transmission converter；And the optical signal light matrix host to be conveyed changes into the optical fiber receiving converter for the vision signal that the identifiable electrical signal form of equipment is shown with rear class.The present invention has between each road input/output signal independently of each other, and the signal transmission on other roads is not interfered with if wherein signal breaks down all the way；Synchronous transfer can effectively solve the problems, such as the advantages that control signal need to be transmitted by client cables to reverse data in a fiber simultaneously.
Description
Technical field
The present invention relates to video and audio frequency technology applications field and technical field of security and protection, specifically a kind of to be used for multi-format video signal
The matrix switch system of switching and Inverse problem method.
Background technology
In video and audio system and safety-protection system, matrix switcher is indispensable equipment；Believe in particular with front end
Number diversified appearance of source category, multi-format matrix come into being, and greatly facilitate the integrated installation of system；But signal acquisition
Often there are many uncertainties for the distance between end and PCO plant control office, and near is less than several meters, and remote is more than thousands of miles,
And high-definition signal can only be transmitted to hundreds of meters of distance even if using best coaxial cable；If it uses to pass at a distance
Defeated famous IP network and the worry of the safety of presence signal, real-time etc..
Simultaneously to the prime equipment of matrix switcher -- the control of signal acquisition terminal is also important link, in view of control
Interface processed is generally general RS485；So general application needs other control signal wire dedicated for 485 control letter of transmission
Number；And it is often short there are transmission range, connect up the problem of cumbersome etc..
Invention content
In view of defects in the prior art, a kind of for multi-format video signal switching the invention aims to provide
Matrix switch system, the design point which is disperseed based on trouble point, by existing multi-format matrix exist will
The functions such as signal processing and signal switching concentrate on a host, are changed into the switching that signal is mainly responsible for by light matrix host,
Optical signal launch converter is responsible for the processing of input signal, and optical signal receiving converter is responsible for the processing of output signal；Cause it
At work, between each road input/output signal independently of each other, other roads are not interfered with if wherein signal breaks down all the way
Signal transmission；Signal is changed into optical signal or electric signal according to transmission demand correspondence simultaneously, to meet signal long-distance
Transmission demand.
To achieve these goals, technical scheme of the present invention：
A kind of matrix switch system for multi-format video signal switching, it is characterised in that：
It includes at least
The fibre optical transmission converter being connect with prime signal acquisition terminal, the fibre optical transmission converter acquire to identification signal
The vision signal for the multiple format sent out is held, the vision signal is converted into after unified optical signal sending to optical moment by electric signal
Battle array host, and receive the control data of the optical signal form of reverse transfer；
The light matrix host being connect with the fibre optical transmission converter, the light matrix host are converted to complete vision signal
Transmission process and synchronized during vision signal converting transmission is carried out will control data conversion Cheng Guang corresponding with vision signal
Reverse transfer is to fibre optical transmission converter after signal；The vision signal converting transmission process refers to the input in light matrix host
The vision signal of optical signal form is converted into electrical signal form by end, complete by the central processing unit inside the light matrix host
Into the channel switching of the vision signal of electrical signal form, finally the vision signal of the electrical signal form is converted by output terminal
It can be sent after optical signal that optical fiber receiving converter receives to optical fiber receiving converter；
The optical fiber receiving converter being connect with the light matrix host, the optical fiber receiving converter is to by light matrix host
The optical signal of conveying changes into the vision signal that the identifiable electrical signal form of equipment is shown with rear class.
Further, the fibre optical transmission converter, light matrix host and optical fiber receiving converter pass through single-mode optics
Fibre carries out signal transmission.
The vision signal of multiple format that the fibre optical transmission converter is sent out to identification signal collection terminal is regarded by described in
Frequency signal carry out parallel-serial conversion after by the vision signal of serial data form by electric signal be converted into unified optical signal and send to
Light matrix host, while receive the control data of the optical signal form of reverse transfer, to the optical signal form control data into
Row parses and exports corresponding 485 serial communication data；The fibre optical transmission converter include multi-format video signal input module,
Reverse control signal decoder module and photoelectric conversion module；The multi-format video signal input module connection prime signal is adopted
Collect end, to the vision signal for the multiple format for sending out identification signal collection terminal, the vision signal be subjected to parallel-serial conversion,
Vision signal is converted into be easy to the serial digital signal transmitted at a distance；The photoelectric conversion module connects the multi-format
Video signal input module, the serial digital signal is converted into unified optical signal and is sent to light matrix host；Institute
It states reverse control signal decoder module and connects the photoelectric conversion module, reversely passed to be received by the photoelectric conversion module
Defeated optical signal form control data parse the optical signal form control data and export corresponding 485 and serially led to
Interrogate data；The multi-signal form includes but not limited to DVI, HDMI, HDSDI, VGA, YPbPr and CVBS vision signal lattice
Formula.The 485 serial communication data demand meets the serial asynchronous communication agreement of RS-485 sata standard buses.
Preferably, the multi-format video signal input module includes multi-format video signal to be converted into simultaneously line number
According to decoding chip and parallel data is converted into the parallel-serial conversion chip of serial data；The reverse control signal decodes mould
Block, which includes the CPLD chips and low speed signal for logical transition and goes here and there, converts chip；The photoelectric conversion module includes SFP light
Electric modular converter.
Further, the optical fiber receiving converter changes into electrical signal form to the optical signal for conveying light matrix host
Vision signal, and the vision signal is shown into equipment identifiable parallel data form by serial data form conversion rear class
Vision signal；The optical fiber receiving converter includes photoelectric conversion module and video signal processing module；The opto-electronic conversion mould
Block changes into the vision signal of electrical signal form to the optical signal that conveys light matrix host；The video signal processing module connects
The photoelectric conversion module is connect, vision signal by the vision signal of serial data form converting parallel data form and to be incited somebody to action
The vision signal of the parallel data form is converted into be shown the vision signal of equipment identification.
Preferably, the video signal processing module includes vision signal being converted to parallel data by serial data form
The serioparallel exchange chip (such as GS2960/GS2970) of the vision signal of form and the vision signal by the parallel data form
It is converted into be shown the video coding chip (such as TDA9984) of the vision signal of equipment identification.
Further, the light matrix host includes input terminal, central processing unit and output terminal；The input terminal is used
Vision signal in the form of by optical signal is converted into electrical signal form and synchronize will control corresponding with electrical signal form vision signal
Data conversion processed sends out converter into reverse transfer after optical signal to light；The input terminal is included to by the video of optical signal form
Signal is converted into the photoelectric conversion module of electrical signal form and synchro edit is corresponding with vision signal meets 485 serial communications
The control data of agreement and pass through photoelectric conversion module by the vision signal editted be converted into optical signal reverse transfer to light send out
The reverse control signal coding module of converter；The central processing unit under the control of switching command completing electric signal
The channel switching of the vision signal of form and the operating status of monitoring Inverse problem process；The central processing unit includes making
Maincenter in order to control, for monitoring the operating status of matrix switcher and controlling handover module in real time under the control of switching command
It completes the arm processor module of switchover operation and the defeated of the vision signal of electrical signal form is completed under the control of switching command
Enter the handover module of the intersection switching of output signal；When the output terminal is to carry out the vision signal of the electrical signal form
Clock recovery is processed and converted to the optical signal that can be received by optical fiber receiving converter；The output terminal is included to the electricity
The vision signal of signal form carries out the clock recovery circuitry and photoelectric conversion module of clock recovery processing.
Preferably, the reverse control signal coding module includes serial corresponding with vision signal will meet 485
The control data of communications protocol compile the CPLD chips of parallel data and to will be described parallel by programming in logic
Data conversion is into the parallel-serial conversion chip of serial digital signal.
The handover module uses any one chip of GX3290, GX3246 or M211XX as hand-off process chip.
The purpose of the present invention also provides a kind of Inverse problem method based on above-mentioned matrix switch system, and feature exists
In：Include the following steps
(1), the vision signal of the multiple format of prime signal acquisition terminal submitting is identified by fibre optical transmission converter, by institute
It states vision signal to be converted into unified optical signal by electric signal and sent, while is received using the fibre optical transmission converter
The optical signal form control data of reverse transfer parse the optical signal form control data and export corresponding 485
Serial communication data；
(2), the vision signal of optical signal form is received by light matrix host and converts thereof into regarding for electrical signal form
Frequency signal, after the intersection switching for the input/output signal that the vision signal of electrical signal form is completed under the control of switching command,
The vision signal of the electrical signal form is converted into be sent after optical signal that optical fiber receiving converter receives；
It will believe while the vision signal of optical signal form is converted into the vision signal of electrical signal form with the video of electrical signal form
Number corresponding control data conversion is into reverse transfer after optical signal to fibre optical transmission converter；
(3), the optical signal received is changed into the vision signal that the identifiable electrical signal form of equipment is shown with rear class.
The optical signal is by single mode optical fiber in fibre optical transmission converter, light matrix host and optical fiber receiving converter
Between carry out signal transmission.
Further, the step (1) is specially to utilize a variety of of fibre optical transmission converter identification signal collection terminal submitting
The vision signal of form will be turned the vision signal of serial data form by electric signal after vision signal progress parallel-serial conversion
It changes unified optical signal into and send to light matrix host, while receive the optical signal form control data of reverse transfer, to described
Optical signal form control data are parsed and export corresponding 485 serial communication data；The multi-signal form include but
It is not limited to DVI, HDMI, HDSDI, VGA, YPbPr and CVBS video signal format.The 485 serial communication data demand symbol
Close the serial asynchronous communication agreement of RS-485 sata standard buses.
Further, step (2) is specially to be turned the vision signal of optical signal form using the input terminal of light matrix host
Change electrical signal form into and synchronous by the control data for meeting 485 serial communication protocols corresponding with electrical signal form vision signal
Reverse transfer to light sends out converter after being converted into optical signal；Electric signal is completed by central processing unit under the control of switching command
The vision signal of form channel switching i.e. complete electrical signal form vision signal input/output signal intersection switch with
And the operating status of monitoring Inverse problem process；Clock recovery processing is then carried out to the vision signal of the electrical signal form simultaneously
It is converted into the optical signal that can be received by optical fiber receiving converter.
Further, step (3) is specially that the optical signal that light matrix host conveys is changed into the video letter of electrical signal form
Number, and the vision signal is shown that the video of the identifiable parallel data form of equipment is believed by serial data form conversion rear class
Number.
Compared with prior art, beneficial effects of the present invention：
1. the present invention using single mode optical fiber as transmission signal vector, the treatment mechanism of multi-format signal by being locally pushed
To farthest distal end tens kilometers reachable, the remote transmission of multi-format signal is greatly facilitated；It simplifies in system simultaneously
Control the use of industrial siding；
2. typically, existing multi-format matrix exists concentrates on a master by the functions such as signal processing and signal switching
Machine, once whole system is at state of paralysis if host breaks down the defects of；And the present invention has disperseed the presence of trouble point,
Light matrix host is mainly responsible for the switching of signal, and optical signal launch converter is responsible for the processing of input signal, and optical signal, which receives, to be turned
Parallel operation is responsible for the processing of output signal；Between each road input/output signal independently of each other, if wherein signal breaks down all the way
The signal transmission on other roads is not interfered with；
3. synchronous transfer can effectively solve what control signal need to be transmitted by client cables to reverse data in a fiber simultaneously
Problem.
Description of the drawings
Fig. 1 is matrix system structure diagram of the present invention for multi-format video signal switching；
Fig. 2 is matrix system example circuit structure diagram of the present invention for multi-format video signal switching；
Fig. 3 is multi-format video signal input module circuit diagram in optical signal launch converter of the present invention；
Fig. 4 is photoelectric conversion module circuit diagram in optical signal launch converter of the present invention；
Fig. 5 is reverse control signal decoder module circuit diagram in optical signal launch converter of the present invention；
Fig. 6 is input module circuit diagram in light matrix host of the present invention；
Fig. 7 is switch module circuit diagram in light matrix host of the present invention；
Fig. 8 is output module circuit diagram in light matrix host of the present invention；
Fig. 9 is photoelectric conversion module circuit diagram in optical signal receiving converter of the present invention；
Figure 10 is vision signal output module circuit diagram in optical signal receiving converter of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
As shown in Fig. 1-Figure 10, the present invention proposes a kind of optical moment array 1 system for multi-format video signal switching, full
The foot demand of audio and video and security protection the industry remote real-time Transmissions to multi-format video signal.
Current general common multi-format matrix greatly facilitates the signal acquisition terminal video/audio signal of variety classes interface
Hand-off process, but the distance between signal acquisition terminal and PCO plant control office distance differ, and common wire rope is often full
The foot demand that signal does not transmit at a distance, and the safety of optical signal, real-time etc. compensate for the needs of this respect just；Institute
The fiber matrix system thought transmission optical signal and invented is exactly the direction of multi-format matrix development.Typically, it is existing more
Form matrix exists concentrates on a host by the functions such as signal processing and signal switching, the entire body if host breaks down
The defects of system is at state of paralysis；And the present invention has disperseed the presence of trouble point, light matrix host is mainly responsible for cutting for signal
It changes, optical signal launch converter is responsible for the processing of input signal, and optical signal receiving converter is responsible for the processing of output signal；Each road
Between input/output signal independently of each other, the signal transmission on other roads is not interfered with if wherein signal breaks down all the way；Together
When RS485 control signals reverse transfer transmitted using optical fiber, it is effectively simple instead of the cable for being used for transmission RS485 signals
Changed control line wiring it is cumbersome the problems such as.
Based on the above problem and principle, as shown in Figure 1 and Figure 2, the present invention devises a kind of suitable for multi-format video signal
The matrix switch system of switching passes through list including fibre optical transmission converter, light matrix host and optical fiber receiving converter
Mode fiber carries out three independent particle systems of signal transmission, is attached between three subsystems by single mode optical fiber, passes through three
The cooperation of a subsystem realizes the demand that multi-format video signal transmits at a distance, and corresponding workflow is as follows：
The fibre optical transmission converter of one of subsystem is used to connect the signal acquisition end equipment of front end, and identifies multiple format
Vision signal, after the conversion of electric signal to optical signal, vision signal in fibre optical transmission converter turns vision signal
It is sent out into unified optical signal；Single mode optical fiber is input to signal as the transmission medium of optical signal two light matrix of subsystem
Host；Core component of the light matrix host as matrix switch system is mainly used for completing the input and output switching of vision signal
And the transmission process of Reverse Turning Control data, while for the remote transmission for ensureing the vision signal after switching, it is required to incite somebody to action
Vision signal is converted into optical signal again；Three optical fiber for being transferred into subsystem that optical signal again passes by single mode optical fiber connects
Converter is received, optical fiber receiving converter is mainly used for completing conversion of the optical signal to electric signal, after carrying out recovery processing to signal
Electric signal is changed into vision signal connection rear class and shows equipment.
Specifically：
First, fibre optical transmission converter includes multi-format video signal input module, reverse control signal decoder module and light
Electric modular converter.
First function of the fibre optical transmission converter is the multiple format for being sent out to identification signal collection terminal
The vision signal of serial data form will be converted into uniting by vision signal after vision signal progress parallel-serial conversion by electric signal
One optical signal, the multi-signal form include DVI, HDMI, HDSDI, VGA, YPbPr and CVBS video signal format.Its
In, the multi-format video signal input module connects prime signal acquisition terminal, to realize the vision signal of multiple format
Digitlization is the vision signal for the multiple format that identification signal collection terminal is sent out, by the vision signal of parallel data form by string
Change circuit and carry out parallel-serial conversion, i.e., be converted into vision signal being easy to the serial digital signal transmitted at a distance, it is preferred described
Multi-format video signal input module includes multi-format video signal being converted into the decoding chip of parallel data (such as
ADV7441) and parallel data it is converted into the parallel-serial conversion chip (such as GS2962/GS2972) of serial data；The photoelectricity
Modular converter connects the multi-format video signal input module, believes the serial digital signal is converted into unified light
It number is sent through single mode optical fiber to light matrix host；The photoelectric conversion module includes SFP (Small Form-factor
Pluggable) photoelectric conversion module, main model producers' product such as including Gennum, OVLINK.Such as shown in figure 3, more lattice
The processing of formula vision signal ADV7441 chips in the multi-format video signal input module, is converted into parallel video counts
Word signal；Again as shown in figure 4, corresponding parallel video data complete video signal by the stringization processing of GS2972 chips
Conversion from parallel signal to serial signal, the serial signal directly input SFP photoelectric conversion modules and change into optical signal output.
Second function that the fibre optical transmission converter is completed is to realize that reversed control optical signal is (described reversely light-operated
Signal processed is relative to a kind of signal for defining of transmission direction of the vision signal from light hair converter output, and the signal is from optical moment
Battle array host is sent out is transferred into light hair converter through optical fiber) the i.e. optical signal form of reception light matrix host reverse transfer of parsing
Data are controlled, the control data of the optical signal form are parsed and are exported corresponding meets RS-485 sata standard buses
Serial asynchronous communication agreement 485 serial communication data；The reverse control signal decoder module is included for logical transition
CPLD chips and low speed signal and conversion chip of going here and there (MAX9205/MAX9207 that is produced of MAXIM semiconductor companies can be selected
Wait chips)；As shown in figure 4, low-rate signal serioparallel exchange chip MAX9206 receives the serial of SFP photoelectric conversion modules output
Signal and the Parallel transformation processing acquisition parallel signal data for completing signal；Parallel signal data are in CPLD chip interiors by patrolling
Collect the RS485 signals that programming output meets serial communication protocol.2nd, light matrix host is mainly used for completing described in light matrix host
The switching of vision signal and Reverse Turning Control data encoding processing i.e. synchronize will it is corresponding with vision signal control data conversion into
Reverse transfer is to fibre optical transmission converter after optical signal；The light matrix host includes input terminal, central processing unit and defeated
Outlet；
The input terminal is the vision signal of optical signal form to be converted into electrical signal form and synchronize with video to believe
Number corresponding control data conversion sends out converter into reverse transfer after optical signal to light；The central processing unit is switching
The channel switching of the vision signal of electrical signal form and the operating status of monitoring Inverse problem process are completed under the control of instruction；
The output terminal is processed and converted to be connect by optical fiber to carry out clock recovery to the vision signal of the electrical signal form
Receive the optical signal that converter receives.
The input terminal includes the opto-electronic conversion mould the vision signal of optical signal form to be converted into electrical signal form
Block and the synchro edit control data for meeting 485 serial communication protocols corresponding with vision signal simultaneously pass through photoelectric conversion module
The vision signal editted is converted into optical signal reverse transfer to the reverse control signal coding module of light hair converter；It is described
Reverse control signal coding module includes leading to the control data for meeting 485 serial communication protocols corresponding with vision signal
It crosses programming in logic and compiles the CPLD chips of parallel data and the parallel data is converted into serial digital letter
Number parallel-serial conversion chip (chips such as the MAX9206/MAX9208 that MAXIM semiconductor companies are produced can be used).
The central processing unit includes arm processor module and handover module；The arm processor module is as control
Maincenter processed, for monitoring the operating status of matrix switcher and handover module being controlled to be completed under the control of switching command in real time
Switchover operation, main task include the coding of all controllable device addresses of signal source end, processing that external communication instructs etc.；Institute
Handover module is stated for completing the intersection of the input/output signal of the vision signal of electrical signal form under the control of switching command
The intersection switching of the arbitrary road input/output signals of m × n is realized in switching.The m roads input signal correspondence is in the m roads of input terminal electricity
The input signal of signal form；N roads output signal corresponds to the output signal of the n roads electric signal form of output terminal；Institute
The handover module stated is using GX3290, GX3246 or M211XX as any one chip of hand-off process chip.
The output terminal includes clock recovery circuitry and photoelectric conversion module；Clock recovery circuitry is used for electrical signal form
Vision signal carry out clock recovery processing, effectively to improve the quality of electric signal, make up in signal transmission handoff procedure
Loss, interference etc.；The photoelectric conversion module is used to complete electric signal to the optical signal conversion that can be transmitted at a distance；It can equally adopt
With SFP photoelectric conversion modules.
For ease of description, it is only illustrated herein with the input of the first via of light matrix host and first via output.
First via light input module processing procedure is illustrated in figure 6, optical signal enters SFP opto-electronic conversions after optical fiber transmits
Module completes conversion of the vision signal from optical signal to electric signal IN_P1/IN_N1；The electric signal IN_P1/IN_N1 is difference
Signal can switch as the input signal of handover module；Meet the control signal of 485 serial communication protocols in CPLD simultaneously
Chip interior is encoded into parallel data by programming in logic, and the parallel data is by low-rate signal parallel-serial conversion chip
MAX9205 is converted into serial digital signal DATA_TX+/DATA_TX-, and the serial digital signal is through SFP photoelectric conversion modules
It is converted into electric signal reverse transfer in a fiber.
The handoff procedure being illustrated in figure 7 in light matrix host, according to light matrix scale need select different size
Switch chip and realize that the arbitrary road between m road input signals and n roads output signal switches, as M21151 chips maximum in Fig. 6 can be real
Existing 144 tunnel input signals intersect switching with 144 tunnel output signals.In handover module, switch chip (Crosspoint)
GX3290, GX3246 family chip of GENNUM companies production or the M211XX series of Mindspeed companies production can be used
Chip.
First via light output process is illustrated in figure 8, the output signal OUT_P1/N1 of handover module is defeated in described Fig. 7
Enter to clock recovery chip M08045 and carry out clock recovery, the quality of signal can be effectively improved, reduce signal in a series of conversions
And existing loss of signal after hand-off process；Electric signal input SFP photoelectric conversion modules after clock recovery change into light letter
Number output.
3rd, optical fiber receiving converter
It is described to state optical fiber receiving converter be turned after transmitting at a distance by the optical signal that light matrix host conveys
Show that equipment is identifiable simultaneously by serial data form conversion rear class into the vision signal of electrical signal form, and by the vision signal
The vision signal of row data mode；The optical fiber receiving converter includes photoelectric conversion module and video signal processing module；Institute
The optical signal that photoelectric conversion module is stated light matrix host to be conveyed changes into the vision signal of electrical signal form；The video letter
Number processing module connects the photoelectric conversion module, to vision signal regarding by serial data form converting parallel data form
Frequency signal and the vision signal that the vision signal of the parallel data form is converted into be shown to equipment identification.
Preferably, the video signal processing module includes vision signal being converted to parallel data by serial data form
The serioparallel exchange chip GS2960/GS2970 of the vision signal of form and the vision signal conversion by the parallel data form
Into the video coding chip TDA9984 for the vision signal that can be shown equipment identification.
The optical signal transmitted as shown in Figure 9 through optical fiber is input to SFP photoelectric conversion modules and changes into electric signal Input_P1/
Input_N1 difference outputs, the serial differential signals by GS2970 chips processing complete digital signal from serial signal to
The conversion of parallel signal, the parallel signal input interface chip TDA9984 as shown in Figure 10 and are converted into DVI/HDMI signals
It connects rear class and shows equipment.
The present invention gives a kind of switching method based on above-mentioned matrix switch system, includes the following steps
(1), the vision signal of the multiple format of prime signal acquisition terminal submitting is identified by fibre optical transmission converter, by institute
It states vision signal to be converted into unified optical signal by electric signal and sent, while is received using the fibre optical transmission converter
The optical signal form control data of reverse transfer parse the optical signal form control data and export corresponding 485
Serial communication data；
(2), the vision signal of optical signal form is received by light matrix host and converts thereof into regarding for electrical signal form
Frequency signal, after the intersection switching for the input/output signal that the vision signal of electrical signal form is completed under the control of switching command,
The vision signal of the electrical signal form is converted into be sent after optical signal that optical fiber receiving converter receives；
It will believe while the vision signal of optical signal form is converted into the vision signal of electrical signal form with the video of electrical signal form
Number corresponding control data conversion is into reverse transfer after optical signal to fibre optical transmission converter；
(3), the optical signal received is changed into the vision signal that the identifiable electrical signal form of equipment is shown with rear class.
The optical signal is by single mode optical fiber in fibre optical transmission converter, light matrix host and optical fiber receiving converter
Between carry out signal transmission.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of matrix switch system for multi-format video signal switching, it is characterised in that：
Including
The fibre optical transmission converter being connect with prime signal acquisition terminal, the fibre optical transmission converter send to identification signal collection terminal
The vision signal is converted into after unified optical signal sending to light matrix master by the vision signal of the multiple format gone out by electric signal
Machine, and receive the control data of the optical signal form of reverse transfer；
The light matrix host being connect with the fibre optical transmission converter, the light matrix host is completing vision signal converting transmission
Process and synchronized during vision signal converting transmission is carried out will control data conversion corresponding with vision signal into optical signal
Reverse transfer is to fibre optical transmission converter afterwards；The vision signal converting transmission process refers to incite somebody to action in the input terminal of light matrix host
The vision signal of optical signal form is converted into electrical signal form, and electricity is completed by the central processing unit inside the light matrix host
The channel switching of the vision signal of signal form, being finally converted into the vision signal of the electrical signal form by output terminal can
It is sent after the optical signal received by optical fiber receiving converter to optical fiber receiving converter；
The optical fiber receiving converter being connect with the light matrix host, the optical fiber receiving converter is light matrix host to be conveyed
Optical signal change into rear class show the identifiable electrical signal form of equipment vision signal.
2. the matrix switch system according to claim 1 for multi-format video signal switching, it is characterised in that：
The vision signal of multiple format that the fibre optical transmission converter is sent out to identification signal collection terminal, the video is believed
It the vision signal of serial data form is converted into unified optical signal by electric signal and send to optical moment after number carrying out parallel-serial conversion
Battle array host, while the control data of the optical signal form of reverse transfer are received, the optical signal form control data are solved
It analyses and exports corresponding 485 serial communication data；The fibre optical transmission converter include multi-format video signal input module, reversely
Control signal decoder module and photoelectric conversion module；The multi-format video signal input module connects prime signal acquisition
The vision signal to the vision signal for the multiple format for sending out identification signal collection terminal, is carried out parallel-serial conversion, i.e., by end
Vision signal is converted into serial digital signal；The photoelectric conversion module connects the multi-format video signal input module,
The serial digital signal is converted into unified optical signal and is sent to light matrix host；The reverse control signal decoding
Module connects the photoelectric conversion module, to receive the optical signal form control of reverse transfer by the photoelectric conversion module
Data parse the optical signal form control data and export corresponding 485 serial communication data.
3. the matrix switch system according to claim 1 for multi-format video signal switching, it is characterised in that：
The optical fiber receiving converter changes into the vision signal of electrical signal form to the optical signal that conveys light matrix host, and
The vision signal is converted to the vision signal of the rear class display identifiable parallel data form of equipment by serial data form；Institute
It states optical fiber receiving converter and includes photoelectric conversion module and video signal processing module；The photoelectric conversion module is to by optical moment
The optical signal of battle array host conveying changes into the vision signal of electrical signal form；The video signal processing module connects the photoelectricity and turns
Change the mold block, to by vision signal by the vision signal of serial data form converting parallel data form and by the parallel data
The vision signal of form is converted into be shown the vision signal of equipment identification.
4. the matrix switch system according to claim 1 for multi-format video signal switching, it is characterised in that：
The light matrix host includes input terminal, central processing unit and output terminal；The input terminal is to by optical signal shape
The vision signal of formula is converted into electrical signal form and synchronizes control data conversion corresponding with the vision signal of electrical signal form
Reverse transfer to light sends out converter after into optical signal；The central processing unit under the control of switching command completing telecommunications
The channel switching of the vision signal of number form and the operating status of monitoring Inverse problem process；The output terminal is to described
The vision signal of electrical signal form carries out clock recovery and is processed and converted to the optical signal that can be received by optical fiber receiving converter.
5. the matrix switch system according to claim 4 for multi-format video signal switching, it is characterised in that：
The input terminal include to the vision signal of optical signal form is converted into the photoelectric conversion module of electrical signal form with
And the synchro edit control data for meeting 485 serial communication protocols corresponding with vision signal and pass through photoelectric conversion module will compile
The vision signal collected is converted into optical signal reverse transfer to the reverse control signal coding module of light hair converter.
6. the matrix switch system according to claim 4 for multi-format video signal switching, it is characterised in that：
The central processing unit is included as control axis, for monitoring the operating status of matrix switcher and in real time control
Handover module completed under the control of switching command the arm processor module of switchover operation and under the control of switching command it is complete
Into the handover module of the intersection switching of the input/output signal of the vision signal of electrical signal form.
7. the matrix switch system according to claim 4 for multi-format video signal switching, it is characterised in that：
The output terminal includes the clock recovery electricity to carry out clock recovery processing to the vision signal of the electrical signal form
Road and photoelectric conversion module.
8. the matrix switch system according to claim 1 for multi-format video signal switching, it is characterised in that：
The fibre optical transmission converter, light matrix host and optical fiber receiving converter carry out signal biography by single mode optical fiber
It is defeated.
A kind of 9. Inverse problem method for multi-format video signal switching, it is characterised in that：Using such as claim 1-8 institutes
Matrix switch system is stated, is included the following steps
(1), the vision signal of the multiple format of prime signal acquisition terminal submitting is identified by fibre optical transmission converter, is regarded by described in
Frequency signal is converted into unified optical signal by electric signal and is sent, while is received reversely using the fibre optical transmission converter
The optical signal form control data of transmission parse the optical signal form control data and export corresponding 485 serially
Communication data；
(2), the video for receiving the vision signal of optical signal form by light matrix host and converting thereof into electrical signal form is believed
Number, after the intersection switching for the input/output signal that the vision signal of electrical signal form is completed under the control of switching command, by institute
The vision signal for stating electrical signal form is converted into be sent after optical signal that optical fiber receiving converter receives；Believe in light
By the vision signal pair with electrical signal form while the vision signal of number form is converted into the vision signal of electrical signal form
The control data conversion answered is into reverse transfer after optical signal to fibre optical transmission converter；
(3), the optical signal received is changed into the vision signal of the rear class display identifiable electrical signal form of equipment.
10. the Inverse problem method according to claim 9 for multi-format video signal switching, it is characterised in that：
The optical signal is by single mode optical fiber between fibre optical transmission converter, light matrix host and optical fiber receiving converter
Carry out signal transmission.
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| CN114598385A (en) * | 2020-12-04 | 2022-06-07 | 深圳市奥拓电子股份有限公司 | Method, device and system for hot standby of command center terminal |
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| CN114374451B (en) * | 2022-01-10 | 2023-08-22 | 中国人民解放军国防科技大学 | Large-scale MIMO channel simulation method and device based on optical matrix switching |
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