The utility model content
The utility model purpose is to provide a kind of multimedia transmission matrix architecture, and the subsystems that is used for solving existing multimedia transmission matrix architecture is relatively independent, system compatibility is poor, audio-video signal can't synchronous transmission, failure rate is high, maintenance difficulties reaches greatly the high in cost of production problem.
For solving the problems of the technologies described above, the utility model provides a kind of multimedia transmission matrix architecture, and described multimedia transmission matrix architecture comprises: for the backboard of the interchange channel that power supply, data flow or control signal are provided; The power panel that is connected with described backboard, be used for alternating current is converted to direct current; The master control borad that is connected with described backboard, be used for realizing the exchange control of machine system; The power board that some and described backboard is connected, comprise some video exchange plates and some power boards based on FPGA; The signal tablet that some and described backboard is connected, be used for realizing the input of video, audio frequency, infrared, serial data; The signal output board that some and described backboard is connected, be used for realizing the output of video, audio frequency, infrared, serial data; And the touch-screen that is connected with described master control borad, be used for realizing alternately with the user, for user's input control order.
Preferably, described power panel is converted to the alternating current of 110-240V the direct current of 27V.
Preferably, described power panel comprises 3 power modules.
Preferably, described master control borad connects local area network (LAN) or outside intelligent central control system by network communication interface.
Preferably, described power board based on FPGA comprises programmable gate array, memory, single-chip microcomputer and CAN module.
Preferably, form serial ports power board or infrared power board by a power board based on FPGA.
Preferably, form the audio exchange plate by two power boards based on FPGA.
Preferably, described signal tablet is VGA card, CVBS card, YPBPR card, DVI card, HDMI card, optical fiber integrated circuit board or HDBaseT integrated circuit board.
Preferably, described signal output board is VGA card, CVBS card, YPBPR card, DVI card, HDMI card, optical fiber integrated circuit board or HDBaseT integrated circuit board.
Multimedia transmission matrix architecture of the present utility model adopts some power boards based on FPGA to be configured to serial ports power board, audio exchange plate or infrared power board, realize control transmission, the audio-video signal synchronous transmission of all signals on identical platform, signal format, agreement is unified, integrating, upgrading is convenient, and system compatibility is good, failure rate is low, easy care, cost is low, and system availability is high.
Embodiment
, in order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of multimedia transmission matrix architecture, realize control transmission, the audio-video signal synchronous transmission of all signals on identical platform, signal format, agreement is unified, integrating, upgrading is convenient, and system compatibility is good, failure rate is low, easy care, cost is low, and system availability is high.
Please refer to Fig. 1, a kind of multimedia transmission matrix architecture comprises backboard 100, power panel 200 and each integrated circuit board.Described each integrated circuit board comprises at least one master control borad 300, some power boards, some signal tablets 500, some signal output boards 600 and touch-screen 700.Wherein, described some power boards comprise some video exchange plates 410 and some power boards based on FPGA 420.
Backboard 100 all is connected by PCIE connector or high speed connector with power panel 200, master control borad 300, power board, signal tablet 500 and signal output board 600.Master control borad 300 also is connected with touch-screen 700.
Backboard 100 mainly provides the interchange channel of power supply, data flow, control signal.
Please refer to Fig. 2, power panel 200 realizes the alternating current of 110-240V is converted to the direct current of 27V, to machine system, powers.The 27V DC power supply is given each integrated circuit board power supply by backboard 100.Each integrated circuit board transfers 27V to veneer required supply voltage by power module.
Particularly, power panel 200 can patch 3 power modules 210, realizes the design of 2+1 redundant power.So-called 2+1 redundant power designs namely: under normal circumstances, only have 210 work of a power module, when the power module 210 of working damages, any one the startup work in two other power module 210, continue power supply, and the assurance system is not cut off the power supply.Described 2+1 redundant power design can guarantee the system stable operation of 365 day 24 hours every day, can be according to application scenario, and system power demand, flexible configuration power module 210 quantity.
Please refer to Fig. 3, master control borad 300 is realized the exchange control of machine system.Master control borad 300, by serial line interface 310,, as RS232, is realized local operation with touch-screen 700 or host computer 900 communications with graphic interface.Master control borad 300 also can pass through network communication interface 320,, as RJ45, connects local area network (LAN) or intelligent central control system 800 and realizes remote operation.
The inside of the utility model multimedia transmission matrix architecture is to carry out communication by controller local area network (CAN) bus.All hang with a total line traffic control transceiver module on the veneers such as described master control borad 300, power board, signal tablet 500, signal output board 600, as CAN module 330, and a control module, as microprocessing unit (MCU) 340.CAN module 330 can be RS485.
Video exchange plate 410 is cores that whole high-speed video data exchange is processed, and can realize 3.2G data bandwidth exchange processing, really realizes the ultra high speed signal route.
Please refer to Fig. 4, based on the power board 420 of FPGA take field programmable gate array (FPGA) 421 as processing core, with memory 422, as Flash, the storage data.Due to the configurability of field programmable gate array 421, same hardware structure,, by different programming softwares, can be configured to serial ports power board, audio exchange plate, infrared power board etc.Wherein, serial communication, infrared communication are all two signals, and audio frequency is four signals.
Serial ports power board and infrared power board are all realized with a power board based on FPGA 420; The audio exchange scheme is by the 420 combination realizations of two FPGA power boards, and every field programmable gate array 421 is realized the exchange processing of two signals.
The programmability of FPGA can be expanded combination by integrated circuit board according to system requirements, carries out linear cascade, to realize the exchanges data of larger specification.
According to the configurable characteristics of IO mouth of FPGA, do not changing hardware structure,, by reconfiguring FPGA, can realize easily that namely 64 Lu Jin64 roads go out the transformation that goes out to 1 Lu Jin127 road.According to receiving number of users, transmission means has point-to-point transmission, point-to-multipoint transmission, or broadcast type transmission.
Please refer again to Fig. 3, signal tablet 500 and signal output board 600 dispose a read-only memory (EEPROM) 120 on each slot of backboard 100, unique home address of each read-only memory 120 these slot of storage, this home address writes by specialized CDRW.Each integrated circuit board that is inserted in backboard 100 reads the data of the read-only memory 210 of backboard 100 after power-up initializing,, as the CAN communication source address of the total line traffic control transceiver of this integrated circuit board CAN, by CAN bus and master control borad 300, realize communication.
Signal tablet 500 and signal output board 600 are realized the input and output of vision signal, audio signal, rs 232 serial interface signal, infrared signal.Every block signal tablet 500, signal output board 600 can be realized input and output, 4 tunnel audio signal input and output, 4 road rs 232 serial interface signal input and output, the 4 tunnel infrared signal input and output of 4 road videos.
Different according to video interface, integrated circuit board has VGA, CVBS, YPBPR, DVI, HDMI, optical fiber and network interface input card with corresponding output board card.So both meet the high-definition digital signal and also taken into account the simulation high-definition signal.
Signal tablet 500, according to the difference of interface signal, uses different receiving chip schemes, and the vision signal that gathers is packaged into and minimizes transmitting high speed differential signal (TMDS),, by the cabling of backboard 100, carries out synchronous switching at video exchange plate 410 and distributes; Also, by the cabling of backboard 100, be switched to signal output board 600.
Signal tablet 500 can also be realized the input of external audio frequency, infrared, serial data.Voice data, by decoding chip, is packaged into the I2S data by the backboard cabling, at the audio exchange plate, realizes that switching distributes.Infrared, serial data, by corresponding level switch module, changes into the TTL logic level of 3.3V,, by backboard 100, delivers to the power board 420 based on FPGA, exchanges processing.
Signal output board 600 receives the TMDS high-speed differential signal of backboard 100 inputs, and is different according to interface signal, uses different transmission chip solution, and the TMDS high-speed differential signal is decoded into corresponding interface signal stream, exports to touch-screen 700 or other display equipment.
Different video interface signals can have corresponding signal input/output board,, by video processing technique, is packaged into the TMDS packet, in multimedia transmission matrix architecture inside, switches distribution.This design can not increase under hardware cost according to system requirements, and the various interface of freely arranging in pairs or groups integrated circuit board, realize customizable production.
Signal output board 600 can also, according to customer demand,, by HardwareUpgring, be configured to the special image transaction card and strengthen system processing power.HardwareUpgring is mainly by increasing the FPGA processing module, by programmability and high speed processing that FPGA is powerful, completing the special efficacy seamless switching, picture segmentation, splicing stack.
Touch-screen 700 provides visual pattern manipulation interface for the user, and by serial ports and master control borad 300 communications.
The utility model multimedia transmission matrix architecture carries network software, and the function that software mainly provides has handoff functionality, integrated circuit board setting, EDID switching, state demonstration, alarm etc., facilitates the user to carry out teleinformatic mutual.
But the utility model multimedia transmission matrix architecture is used the expansion card formula, and modularized design can be supported plurality of specifications with requirements extend, as 16X16 (i.e. 16 road video inputs, 16 road videos are exported), 32X32,64X64,128X128 etc.Different video signal input card, the universal design of signal output board card can realize mixed insertion, flexible combination; Can also match the special image transaction card and strengthen system processing power.
This multimedia transmission matrix architecture is also supported all common Blu-ray and Disc player, HDTV (High-Definition Television) receiver, digital media server, computer, high-definition camera and high-clear displays at present, compatible analog and digital video form.
This multimedia transmission matrix architecture also comprises and realizes the audio signal hand-off process, the synchronous and asynchronous hand-off process of infrared signal and rs 232 serial interface signal.
This multimedia transmission matrix architecture adopts the card insert type modular construction, and the different input/output module of can freely arranging in pairs or groups according to demand maximizes the utilization of equipment.
Effect of the present utility model has been the collection to multi-channel video signal, audio signal, control signal, monitoring, synchronous and asynchronous switching distributes, and the Long-distance Control transmission, completes video interface signals collecting and the conversion outputs each other such as VGA, CVBS, YPBPR, DVI, HDMI, optical fiber and network interface.The utility model is realized the control transmission of all signals on identical platform, signal format, and agreement is unified, and the integrating upgrading is convenient.The transmission of all signal controlling on identical platform, facilitates the user, by own wish, different audio-video signals is concentrated regulation and control, has overcome in present system Construction engineering due to the equipment of the different manufacturers problem of compatibility mutually not, has accomplished optimum system compatibility.Integrated design, greatly facilitate engineering cable wiring manufacture and maintenance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.