CN205081869U - A matrix switched systems for having more form video signal switches - Google Patents
A matrix switched systems for having more form video signal switches Download PDFInfo
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- CN205081869U CN205081869U CN201520845039.3U CN201520845039U CN205081869U CN 205081869 U CN205081869 U CN 205081869U CN 201520845039 U CN201520845039 U CN 201520845039U CN 205081869 U CN205081869 U CN 205081869U
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Abstract
The utility model discloses a matrix switched systems for having more form video signal switches, it includes the optic fibre transmission converter of being connected with preceding stage signal acquisition end, with the optical moment battle array host computer that optic fibre transmission converter is connected for the reverse transmission to optic fibre transmission converter after accomplishing the video signal conversion transmission course and will convert the light signal to with the control data that video signal corresponds in step in carrying out the video signal conversion transmission course, with the optic fibre receiving converter ware that optical moment battle array host computer is connected, optic fibre transmission converter, optical moment battle array host computer and optic fibre receiving converter ware all carry out signal transmission through single mode fiber. The utility model discloses a single mode fiber as the great extension of many forms video signal's transmission medium the transmission distance of signal, and then effectively compensatied the not enough of the unable long distance transmission video signal of ordinary many forms matrix, reverse data of while synchronous transmission in optic fibre can effectively solve control signal need be through the problem of special cable transmission.
Description
Technical field
The utility model relates to video and audio frequency technology applications field and technical field of security and protection, is a kind of matrix switch system switched for multi-format video signal specifically.
Background technology
In video and audio system and safety-protection system, matrix switcher is indispensable equipment; Particularly along with the diversified appearance of front end signal source category, multi-format matrix arises at the historic moment, and greatly facilitates the integrated installation of system; But the distance between signals collecting end and PCO plant control office often exists a lot of uncertainties, near is less than several meters, and far away is greater than thousands of miles, even and if adopt best coaxial cable also high-definition signal can only be sent to the distance of hundreds of rice; If adopt the worry of the aspect such as fail safe, real-time that there is again signal with the IP network that long-distance transmissions is famous.
Simultaneously to the prime equipment of matrix switcher--the control of signals collecting end is also important link, in view of control interface is generally general RS485; So general application needs other control signal wire to be specifically designed to transmission 485 control signal; And it is short often to there is transmission range, the problem of the aspect such as to connect up loaded down with trivial details.
Summary of the invention
In view of the defect that prior art exists, the purpose of this utility model to provide a kind of matrix switch system switched for multi-format video signal, this matrix switch system adopts monomode fiber to extend the transmission range of signal greatly as the transmission medium of multi-format video signal, so effectively compensate for common multi-format matrix cannot the deficiency of long range propagation vision signal; Simultaneously reverse data in a fiber synchronous transmission effectively can solve the problem that control signal need be transmitted by client cables.
To achieve these goals, the technical solution of the utility model:
For the matrix switch system that multi-format video signal switches, it is characterized in that:
At least comprise
The fibre optical transmission transducer be connected with prime signals collecting end, the vision signal of the multiple format that this fibre optical transmission transducer is sent in order to identification signal collection terminal, converts described vision signal to unified light signal by the signal of telecommunication and delivers to light matrix main frame;
The light matrix main frame be connected with described fibre optical transmission transducer, this light matrix main frame in order to complete vision signal converting transmission process and after carrying out in vision signal converting transmission process synchronously converting the control data corresponding with vision signal to light signal reverse transfer to fibre optical transmission transducer; Described vision signal converting transmission process refers to and converts the vision signal of light signal form to electrical signal form at the input of light matrix main frame, completed the passage bridge of the vision signal of electrical signal form by the CPU of this light matrix main frame inside, after finally by output the vision signal of described electrical signal form being converted to the light signal that can be received by optical fiber receiving converter, deliver to optical fiber receiving converter;
The optical fiber receiving converter be connected with described light matrix main frame, this optical fiber receiving converter changes in order to the light signal carried by light matrix main frame can by the vision signal of the electrical signal form of rear class display device identification.
Further, described fibre optical transmission transducer, light matrix main frame and optical fiber receiving converter all carry out Signal transmissions by monomode fiber.
The vision signal of the multiple format that described fibre optical transmission transducer is sent in order to identification signal collection terminal, convert the vision signal of serial data form to unified light signal by the signal of telecommunication after described vision signal is carried out parallel-serial conversion and deliver to light matrix main frame, receive the control data of the light signal form of reverse transfer simultaneously, the control data of described light signal form is resolved and exports 485 corresponding serial communication data; This fibre optical transmission transducer comprises multi-format video signal input module, reverse control signal decoder module and photoelectric conversion module; Described multi-format video signal input module connects prime signals collecting end, in order to the vision signal of multiple format that identification signal collection terminal is sent, described vision signal is carried out parallel-serial conversion, converts the serial digital signal being easy to long-distance transmissions by vision signal to; Described photoelectric conversion module connects described multi-format video signal input module, in order to convert described serial digital signal to unified light signal and to deliver to light matrix main frame; Described reverse control signal decoder module connects described photoelectric conversion module, in order to be received the control data of the light signal form of reverse transfer by described photoelectric conversion module, the control data of described light signal form is resolved and exports 485 corresponding serial communication data; Described multi-signal form includes but not limited to DVI, HDMI, HDSDI, VGA, YPbPr and CVBS video signal format.Described 485 serial communication data demands meet the serial asynchronous communication agreement of RS-485 sata standard bus.
Preferably, described multi-format video signal input module comprises the decoding chip for multi-format video signal being converted to parallel data and parallel data is converted to the parallel-serial conversion chip of serial data; Described reverse control signal decoder module comprises for the CPLD chip of logical transition and low speed signal and string transforms chip; Described photoelectric conversion module comprises SFP photoelectric conversion module.
Further, described optical fiber receiving converter changes into the vision signal of electrical signal form in order to the light signal carried by light matrix main frame, and this vision signal be converted to by serial data form can by the vision signal of the parallel data form of rear class display device identification; Described optical fiber receiving converter comprises photoelectric conversion module and video signal processing module; Described photoelectric conversion module changes into the vision signal of electrical signal form in order to the light signal carried by light matrix main frame; Described video signal processing module connects described photoelectric conversion module, the vision signal of described parallel data form is converted to the vision signal that can be shown recognition of devices in order to vision signal by the vision signal of serial data form converting parallel data form.
Preferably, described video signal processing module comprise vision signal vision signal being converted to parallel data form by serial data form serioparallel exchange chip (as GS2960/GS2970) and by as described in the vision signal of parallel data form convert the video coding chip (as TDA9984) of the vision signal that can be shown recognition of devices to.
Further, described light matrix main frame comprises input, CPU and output; Described input is in order to convert the vision signal of light signal form to electrical signal form and reverse transfer sends out transducer to light after synchronously converting the control data corresponding with the vision signal of electrical signal form to light signal; Described input comprises photoelectric conversion module and synchro edit in order to the vision signal of light signal form to be converted to the electrical signal form control data that meet 485 serial communication protocols corresponding with the vision signal of electrical signal form and converts the vision signal editted to reverse control signal coding module that light signal reverse transfer to light sends out transducer by photoelectric conversion module; Described CPU in order to complete the passage bridge of the vision signal of electrical signal form and to monitor the running status of Inverse problem process under the control of switching command; Described CPU comprises as control axis, for monitoring the running status of matrix switcher and controlling in real time arm processor module that handover module completes switchover operation under the control of switching command and the handover module that the intersection of input/output signal of vision signal that completes electrical signal form under the control of switching command switches; Described output is in order to carry out clock recovery process to the vision signal of described electrical signal form and to convert the light signal that can be received by optical fiber receiving converter to; Described output comprises clock recovery circuitry and photoelectric conversion module in order to carry out clock recovery process to the vision signal of described electrical signal form.
Preferably, described reverse control signal coding module comprises in order to the control data that meet 485 serial communication protocols corresponding with vision signal is compiled the CPLD chip of parallel data and the parallel-serial conversion chip in order to described parallel data to be converted to serial digital signal by programming in logic.
Described handover module adopts any one chip of GX3290, GX3246 or M211XX as hand-off process chip.
Compared with prior art, the beneficial effects of the utility model:
1. the utility model adopts monomode fiber as transmission signal vector, the treatment mechanism of multi-format signal is pushed to the far-end that can reach tens kilometers farthest by this locality, greatly facilitates the long-distance transmissions of multi-format signal; Simplify in system the use controlling industrial siding simultaneously;
2. typically, the function such as signal transacting and signal switching is concentrated on a main frame by existing multi-format matrix existence, once main frame breaks down, and the defect that whole system is just in paralyzed state; And light matrix system described in the utility model has disperseed the existence of fault point, the switching of light matrix main frame primary responsibility signal, optical signal launch transducer is responsible for the process of input signal, and light signal receiving converter is responsible for the process outputed signal; Separate between the input/output signal of each road, if wherein a road signal breaks down, the Signal transmissions on other roads can not be affected;
3. simultaneously reverse data in a fiber synchronous transmission effectively can solve the problem that control signal need be transmitted by client cables.
Accompanying drawing explanation
Fig. 1 is the light matrix system configuration schematic diagram that the utility model switches for multi-format video signal;
Fig. 2 is the light matrix system actual circuit structure schematic diagram that the utility model switches for multi-format video signal;
Fig. 3 is multi-format video signal input module circuit diagram in optical signal launch transducer described in the utility model;
Fig. 4 is photoelectric conversion module circuit diagram in optical signal launch transducer described in the utility model;
Fig. 5 is reverse control signal decoder module circuit diagram in optical signal launch transducer described in the utility model;
Fig. 6 is input module circuit diagram in light matrix main frame described in the utility model;
Fig. 7 is handover module circuit diagram in light matrix main frame described in the utility model;
Fig. 8 is output module circuit diagram in light matrix main frame described in the utility model;
Fig. 9 is photoelectric conversion module circuit diagram in light signal receiving converter described in the utility model;
Figure 10 is vision signal output module circuit diagram in light signal receiving converter described in the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Fig. 1-Figure 10, the present invention proposes a kind of light matrix system switched for multi-format video signal, meet audio frequency and video and security protection industry to the demand of the remote real-time Transmission of multi-format video signal.
The signals collecting that current general common multi-format matrix greatly facilitates variety classes interface looks closely the hand-off process of audio signal, but the distance between signals collecting end and PCO plant control office differs, common wire rope often can not meet the demand of signal long-distance transmissions, and the fail safe of light signal, real-time etc. compensate for the needs of this respect just; Think transmitting optical signal and the direction of the fiber matrix system of inventing multi-format matrix development just.The function such as signal transacting and signal switching is concentrated on a main frame by existing multi-format matrix existence, once main frame breaks down, and the defect that whole system is just in paralyzed state; And light matrix system described in the utility model has disperseed the existence of fault point, the switching of light matrix main frame primary responsibility signal, optical signal launch transducer is responsible for the process of input signal, and light signal receiving converter is responsible for the process outputed signal; Separate between the input/output signal of each road, if wherein a road signal breaks down, the Signal transmissions on other roads can not be affected; Simultaneously the reverse transfer of RS485 control signal utilizes Optical Fiber Transmission, instead of the cable for transmitting RS485 signal, effectively simplifies the problems such as the wiring of control line is loaded down with trivial details.
Based on the problems referred to above and principle, as shown in Figure 1 and Figure 2, the utility model devises a kind of matrix switcher being applicable to multi-format video signal and switching, it comprises fibre optical transmission transducer, light matrix main frame and optical fiber receiving converter and all carries out Signal transmissions three independent particle systems by monomode fiber, connected by monomode fiber between three subsystems, it achieves the demand of multi-format video signal long-distance transmissions by the cooperation of three subsystems, and corresponding workflow is as follows:
The fibre optical transmission transducer of one of subsystem is for connecting the signals collecting end equipment of front end, and identify the vision signal of multiple format, vision signal is after the signal of telecommunication to the conversion of light signal, and the vision signal in fibre optical transmission transducer changes into unified light signal and sends; Monomode fiber is input to signal as the transmission medium of light signal the light matrix main frame of subsystem two; Light matrix main frame is as the core component of matrix switch system, the input and output switching of vision signal and the transmission process of Reverse Turning Control data are mainly used in, simultaneously in order to ensure the long-distance transmissions of the vision signal after switching, requiredly convert vision signal to light signal again; Light signal enters the optical fiber receiving converter of subsystem three again through the transmission of monomode fiber, optical fiber receiving converter has been mainly used in the conversion of light signal to the signal of telecommunication, after carrying out Recovery processing, the signal of telecommunication is changed into vision signal connect rear class display device to signal.
Concrete:
One, fibre optical transmission transducer comprises multi-format video signal input module, reverse control signal decoder module and photoelectric conversion module.
First function of this fibre optical transmission transducer is the vision signal for the multiple format sent in order to identification signal collection terminal, convert the vision signal of serial data form to unified light signal by the signal of telecommunication after described vision signal is carried out parallel-serial conversion, described multi-signal form comprises DVI, HDMI, HDSDI, VGA, YPbPr and CVBS video signal format.
Wherein, described multi-format video signal input module connects prime signals collecting end, the vision signal of the multiple format sent in order to the digitlization and identification signal collection terminal that realize the vision signal of multiple format, the vision signal of parallel data form is carried out parallel-serial conversion through stringization circuit, the serial digital signal being easy to long-distance transmissions is converted to by vision signal, preferred described multi-format video signal input module comprises the decoding chip (as ADV7441) for multi-format video signal being converted to parallel data and parallel data is converted to the parallel-serial conversion chip (as GS2962/GS2972) of serial data, described photoelectric conversion module connects described multi-format video signal input module, delivers to light matrix main frame in order to convert described serial digital signal to unified light signal through monomode fiber, described photoelectric conversion module comprises SFP (SmallForm-factorPluggable) photoelectric conversion module, and main model comprises producer's products such as Gennum, OVLINK.Such as shown in Figure 3, the process of multi-format video signal ADV7441 chip in described multi-format video signal input module, converts parallel video signal to; Again as shown in Figure 4, corresponding parallel video data complete the conversion of video signal from parallel signal to serial signal through the string process of GS2972 chip, and this serial signal directly inputs SFP photoelectric conversion module and changes into light signal output.
Second function that described fibre optical transmission transducer completes realizes reverse control light signal (described backlight control signal is the class signal relative to the transmission direction definition sending out the vision signal that transducer exports from light, this signal sends from light matrix main frame and enters light through Optical Fiber Transmission and send out transducer) resolve the control data of the light signal form namely receiving light matrix main frame reverse transfer, the control data of described light signal form is resolved and exports the 485 serial communication data meeting the serial asynchronous communication agreement of RS-485 sata standard bus of correspondence; Described reverse control signal decoder module comprises for the CPLD chip of logical transition and low speed signal and string transforms chip chips such as () MAX9205/MAX9207 that MAXIM semiconductor company can be selected to produce; As shown in Figure 4, low-rate signal serioparallel exchange chip MAX9206 receives serial signal that SFP photoelectric conversion module exports and the Parallel transformation process of settling signal obtains parallel signal data; Parallel signal data export the RS485 signal meeting serial communication protocol by programming in logic at CPLD chip internal.Two, light matrix main frame described in light matrix main frame be mainly used in the switching of vision signal and the process of Reverse Turning Control data encoding and synchronous convert the control data corresponding with vision signal to light signal after reverse transfer to fibre optical transmission transducer; Described light matrix main frame comprises input, CPU and output;
Described input is in order to convert the vision signal of light signal form to electrical signal form and reverse transfer sends out transducer to light after synchronously converting the control data corresponding with vision signal to light signal; Described CPU in order to complete the passage bridge of the vision signal of electrical signal form and to monitor the running status of Inverse problem process under the control of switching command; Described output is in order to carry out clock recovery process to the vision signal of described electrical signal form and to convert the light signal that can be received by optical fiber receiving converter to.
Described input comprises photoelectric conversion module and synchro edit in order to the vision signal of light signal form to be converted to the electrical signal form control data that meet 485 serial communication protocols corresponding with vision signal and converts the vision signal editted to reverse control signal coding module that light signal reverse transfer to light sends out transducer by photoelectric conversion module; Described reverse control signal coding module comprises in order to the control data that meet 485 serial communication protocols corresponding with vision signal is compiled the CPLD chip of parallel data and the parallel-serial conversion chip (chip such as MAX9206/MAX9208 that MAXIM semiconductor company can be adopted to produce) in order to described parallel data to be converted to serial digital signal by programming in logic.
Described CPU comprises arm processor module and handover module; Described arm processor module is as control axis, running status and the real-time handover module that controls for monitoring matrix switcher complete switchover operation under the control of switching command, and its main task comprises the coding of all controllable device addresses of signal source, the process etc. of external communication instruction; The intersection that described handover module is used for the input/output signal of the vision signal completing electrical signal form under the control of switching command switches the intersection switching namely realizing any road of m × n input/output signal.The corresponding input signal in the m road signal of telecommunication form of input of described m road input signal; Described n road outputs signal the output signal of the n road signal of telecommunication form of corresponding output; Described handover module adopts GX3290, GX3246 or M211XX as any one chip of hand-off process chip.
Described output comprises clock recovery circuitry and photoelectric conversion module; Clock recovery circuitry is used for carrying out clock recovery process to the vision signal of electrical signal form, effectively to improve the quality of the signal of telecommunication, makes up the loss in Signal transmissions handoff procedure, interference etc.; Described photoelectric conversion module for complete the signal of telecommunication to can long-distance transmissions light signal conversion; SFP photoelectric conversion module can be adopted equally.
For ease of describing, only exporting with the input of the first via of light matrix main frame and the first via herein and illustrating.
Be illustrated in figure 6 first via light input module processing procedure, light signal enters SFP photoelectric conversion module and completes vision signal from light signal to the conversion of signal of telecommunication IN_P1/IN_N1 after Optical Fiber Transmission; Described signal of telecommunication IN_P1/IN_N1 is that differential signal can be used as the input signal of handover module for switching; The control signal simultaneously meeting 485 serial communication protocols is encoded into parallel data at CPLD chip internal by programming in logic, described parallel data converts serial digital signal DATA_TX+/DATA_TX-to by low-rate signal parallel-serial conversion chip MAX9205, and described serial digital signal converts signal of telecommunication reverse transfer in a fiber to through SFP photoelectric conversion module.
Be illustrated in figure 7 the handoff procedure in light matrix main frame, according to light matrix scale need the switching chip selecting different size realize m road input signal and n road output signal between any road switch, as maximum in M21151 chip in Fig. 6 realize that 144 road input signals and 144 tunnels output signal intersect and switch.In handover module, it switches GX3290, GX3246 family chip that chip (Crosspoint) can use GENNUM company to produce, or the M211XX family chip that Mindspeed company produces.
Be illustrated in figure 8 first via light output process, in described Fig. 7, the output signal OUT_P1/N1 of handover module is input to clock recovery chip M08045 and carries out clock recovery, effectively can improve the quality of signal, reduce the loss of signal that signal exists after a series of conversion and hand-off process; Signal of telecommunication input SFP photoelectric conversion module after clock recovery changes into light signal and exports.
Three, optical fiber receiving converter
Described optical fiber receiving converter of stating is in order to will after long-distance transmissions, the light signal carried by light matrix main frame changes into the vision signal of electrical signal form, and this vision signal is changed the vision signal of the discernible parallel data form of rear class display device by serial data form; Described optical fiber receiving converter comprises photoelectric conversion module and video signal processing module; Described photoelectric conversion module changes into the vision signal of electrical signal form in order to the light signal carried by light matrix main frame; Described video signal processing module connects described photoelectric conversion module, the vision signal of described parallel data form is converted to the vision signal that can be shown recognition of devices in order to vision signal by the vision signal of serial data form converting parallel data form.
Preferably, described video signal processing module comprises the serioparallel exchange chip GS2960/GS2970 of vision signal vision signal being converted to parallel data form by serial data form and the vision signal of described parallel data form is converted to the video coding chip TDA9984 of the vision signal that can be shown recognition of devices.
Be input to SFP photoelectric conversion module through the light signal of Optical Fiber Transmission as shown in Figure 9 and change into signal of telecommunication Input_P1/Input_N1 difference output, described serial differential signals completes the conversion of digital signal from serial signal to parallel signal through the process of GS2970 chip, and described parallel signal input interface chip TDA9984 as shown in Figure 10 converts DVI/HDMI signal to and connects rear class display device.
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection range of the present utility model.
Claims (10)
1., for the matrix switch system that multi-format video signal switches, it is characterized in that:
At least comprise
The fibre optical transmission transducer be connected with prime signals collecting end, the vision signal of the multiple format that this fibre optical transmission transducer is sent in order to identification signal collection terminal, converts described vision signal to unified light signal by the signal of telecommunication and delivers to light matrix main frame;
The light matrix main frame be connected with described fibre optical transmission transducer, this light matrix main frame in order to complete vision signal converting transmission process and after carrying out in vision signal converting transmission process synchronously converting the control data corresponding with vision signal to light signal reverse transfer to fibre optical transmission transducer; Described vision signal converting transmission process refers to and converts the vision signal of light signal form to electrical signal form at the input of light matrix main frame, and the passage bridge of the vision signal of electrical signal form is completed by the CPU of this light matrix main frame inside, deliver to optical fiber receiving converter after finally by output the vision signal of described electrical signal form being converted to the light signal that can be received by optical fiber receiving converter;
The optical fiber receiving converter be connected with described light matrix main frame, this optical fiber receiving converter changes in order to the light signal carried by light matrix main frame can by the vision signal of the electrical signal form of rear class display device identification.
2. matrix switch system according to claim 1, it is characterized in that: the vision signal of the multiple format that described fibre optical transmission transducer is sent in order to identification signal collection terminal, convert the vision signal of serial data form to unified light signal by the signal of telecommunication after described vision signal is carried out parallel-serial conversion and deliver to light matrix main frame, receive the light signal form control data of reverse transfer simultaneously, described light signal form control data are resolved and exports 485 corresponding serial communication data; This fibre optical transmission transducer comprises multi-format video signal input module, reverse control signal decoder module and photoelectric conversion module; Described multi-format video signal input module connects prime signals collecting end, in order to the vision signal of multiple format sent by identification signal collection terminal, described vision signal is carried out parallel-serial conversion, converts serial digital signal to by vision signal; Described photoelectric conversion module connects described multi-format video signal input module, in order to convert described serial digital signal to unified light signal and to deliver to light matrix main frame; Described reverse control signal decoder module connects described photoelectric conversion module, in order to be received the light signal form control data of reverse transfer by described photoelectric conversion module, described light signal form control data are resolved and exports 485 corresponding serial communication data.
3. matrix switch system according to claim 2, is characterized in that: described multi-format video signal input module comprises the decoding chip for multi-format video signal being converted to parallel data and parallel data converted to the parallel-serial conversion chip of serial data; Described reverse control signal decoder module comprises for the CPLD chip of logical transition and low speed signal and string transforms chip; Described photoelectric conversion module comprises SFP photoelectric conversion module.
4. matrix switch system according to claim 3, is characterized in that:
Described optical fiber receiving converter changes into the vision signal of electrical signal form in order to the light signal carried by light matrix main frame, and this vision signal is converted to the vision signal of the discernible parallel data form of rear class display device by serial data form; Described optical fiber receiving converter comprises photoelectric conversion module and video signal processing module; Described photoelectric conversion module changes into the vision signal of electrical signal form in order to the light signal carried by light matrix main frame; Described video signal processing module connects described photoelectric conversion module, the vision signal of described parallel data form is converted to the vision signal that can be shown recognition of devices in order to vision signal by the vision signal of serial data form converting parallel data form.
5. matrix switch system according to claim 4, is characterized in that:
Described video signal processing module comprises the serioparallel exchange chip of vision signal vision signal being converted to parallel data form by serial data form and the vision signal of described parallel data form is converted to the video coding chip of the vision signal that can be shown recognition of devices.
6. matrix switch system according to claim 1, is characterized in that:
Described light matrix main frame comprises input, CPU and output;
Described input is in order to convert the vision signal of light signal form to electrical signal form and reverse transfer sends out transducer to light after synchronously converting the control data corresponding with electrical signal form vision signal to light signal; Described CPU in order to complete the passage bridge of the vision signal of electrical signal form and to monitor the running status of Inverse problem process under the control of switching command; Described output is in order to carry out clock recovery process to the vision signal of described electrical signal form and to convert the light signal that can be received by optical fiber receiving converter to.
7. matrix switch system according to claim 6, is characterized in that:
Described input comprises photoelectric conversion module and synchro edit in order to the vision signal of light signal form to be converted to the electrical signal form control data that meet 485 serial communication protocols corresponding with vision signal and converts the vision signal editted to reverse control signal coding module that light signal reverse transfer to light sends out transducer by photoelectric conversion module; Described output comprises clock recovery circuitry and photoelectric conversion module in order to carry out clock recovery process to the vision signal of described electrical signal form.
8. matrix switch system according to claim 7, is characterized in that:
Described reverse control signal coding module comprises in order to the control data that meet 485 serial communication protocols corresponding with vision signal is compiled the CPLD chip of parallel data and the parallel-serial conversion chip in order to described parallel data to be converted to serial digital signal by logic coding.
9. matrix switch system according to claim 6, is characterized in that:
Described CPU comprises as control axis, for monitoring the running status of matrix switcher and controlling in real time arm processor module that handover module completes switchover operation under the control of switching command and the handover module that the intersection of input/output signal of vision signal that completes electrical signal form under the control of switching command switches.
10. the matrix switch system according to any one of claim 1-9 claim, is characterized in that:
Described fibre optical transmission transducer, light matrix main frame and optical fiber receiving converter all carry out Signal transmissions by monomode fiber.
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| CN105208298A (en) * | 2015-10-28 | 2015-12-30 | 大连科迪视频技术有限公司 | Matrix switching system and matrix switching method for switching among multi-format video signals |
| CN107529023A (en) * | 2017-08-08 | 2017-12-29 | 武汉兴图新科电子股份有限公司 | It is a kind of that there is signal mutually for the matrix device and output intent of function |
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| CN113572915A (en) * | 2021-09-24 | 2021-10-29 | 聆笙(北京)科技有限公司 | Video signal long-distance transmission method, system, equipment and medium |
| CN114070545A (en) * | 2020-08-10 | 2022-02-18 | 深圳星火源电子有限公司 | Clock synchronization system and clock synchronization method |
| CN114448551A (en) * | 2022-01-20 | 2022-05-06 | 中国电子科技集团公司第二十八研究所 | Distributed serial matrix switching system based on passive wavelength division multiplexing |
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| CN105208298A (en) * | 2015-10-28 | 2015-12-30 | 大连科迪视频技术有限公司 | Matrix switching system and matrix switching method for switching among multi-format video signals |
| CN105208298B (en) * | 2015-10-28 | 2018-06-19 | 大连科迪视频技术有限公司 | A kind of matrix switch system and Inverse problem method for multi-format video signal switching |
| CN107529023A (en) * | 2017-08-08 | 2017-12-29 | 武汉兴图新科电子股份有限公司 | It is a kind of that there is signal mutually for the matrix device and output intent of function |
| CN109451250A (en) * | 2018-11-02 | 2019-03-08 | 天津津航计算技术研究所 | The switching of multi-channel optical fibre high-speed video and self-checking unit |
| CN110708325A (en) * | 2019-10-14 | 2020-01-17 | 体奥动力(北京)体育传播有限公司 | Signal switching method and device, electronic equipment and storage medium |
| CN114070545A (en) * | 2020-08-10 | 2022-02-18 | 深圳星火源电子有限公司 | Clock synchronization system and clock synchronization method |
| CN113572915A (en) * | 2021-09-24 | 2021-10-29 | 聆笙(北京)科技有限公司 | Video signal long-distance transmission method, system, equipment and medium |
| CN114448551A (en) * | 2022-01-20 | 2022-05-06 | 中国电子科技集团公司第二十八研究所 | Distributed serial matrix switching system based on passive wavelength division multiplexing |
| CN114448551B (en) * | 2022-01-20 | 2023-08-25 | 中国电子科技集团公司第二十八研究所 | Distributed serial matrix switching system based on passive wavelength division multiplexing |
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