CN103607544A - High-capacity high-definition SDI seamless matrix switcher - Google Patents
High-capacity high-definition SDI seamless matrix switcher Download PDFInfo
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- CN103607544A CN103607544A CN201310603481.0A CN201310603481A CN103607544A CN 103607544 A CN103607544 A CN 103607544A CN 201310603481 A CN201310603481 A CN 201310603481A CN 103607544 A CN103607544 A CN 103607544A
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Abstract
The invention provides a high-capacity high-definition SDI seamless matrix switcher. The high-capacity high-definition SDI seamless matrix switcher comprises a case, a key board, a core board, an SDI card, a control card and a power supply board, wherein the key board, the core board, the SDI card, the control card and the power supply board are arranged inside the case, the key board is used for forwarding matrix-system control signals and switching over key control signals in real time, and the power supply board is used for supplying electricity to the SDI card and the core board; the core board is perpendicularly connected with the power supply board, the SDI card comprises an SDI input card and an SDI seamless output card which are connected with the core board respectively, the control card is connected with a PC and used for transmitting control signals of the PC to the key board, the control signals are forwarded to the core board by the key board, SDI signals input through the SDI input card are switched to the SDI seamless output card through the core board to be output, and seamless switching is conducted. The high-capacity high-definition SDI seamless matrix switcher has the advantages of not having the blank-screen or blurred screen phenomenon, and having the seamless switching function.
Description
Technical field
The present invention relates to matrix and switch field, the particularly seamless matrix switcher of a kind of large capacity high definition SDI.
Background technology
Existing high definition SDI matrix single device capacity scale is less, be generally the capacity below 128 * 128, can only realize by the cascade of multiple devices the large-scale Real-Time Scheduling of large capacity, because high definition sdi signal communication frequency is high, code stream is large, to pcb board require high, therefore the scale realizing more than single device 128× 128 tunnels is more difficult, a lot of producers can only develop common high definition SDI matrix, there will be the phenomenon of blank screen flower screen during switching, do not have the function of real-time seamless switching.When seamless switching refers to handshaking, output to video image on display device and there will not be blank screen, the phenomenon of flower screen, just can realize Picture switch in a flash.
Summary of the invention
The technical problem to be solved in the present invention is, during for the above-mentioned switching of prior art, there is blank screen flower screen phenomenon, do not there is the defect of real-time seamless handover function, a kind of seamless matrix switcher of large capacity high definition SDI that there will not be blank screen flower screen phenomenon, has real-time seamless handover function is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct the seamless matrix switcher of a kind of large capacity high definition SDI, comprise cabinet, be arranged on described cabinet inside for keypad matrix system control signal being forwarded and button control signal is carried out switching in real time, core board, SDI card, control card and the power supply board of powering to described SDI card and core board; Described core board is connected with described power supply board is vertical, described SDI card comprises SDI input card and the seamless output card of SDI being connected with described core board respectively, described control card is connected with PC, and the control signal of PC is passed to described keypad, described keypad is forwarded to described core board by described control signal, and described core board is switched to the seamless output card output of described SDI by the sdi signal of described SDI input card input and carries out seamless switching.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, the number of described power supply board is at least two, and the number of described core board is one or more.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described power supply board is provided with a plurality of high frequency seats, and described SDI input card is connected with described core board by the described high frequency seat of correspondence respectively with the seamless output card of SDI.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described core board comprises MCU.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described keypad is provided with the first seat of communication linkage, described core board is provided with second communication Connection Block, and described keypad is by being connected with described core board with second communication Connection Block by described the first seat of communication linkage successively.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, also comprise connector, described core board is flexibly connected with described power supply board by described connector.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described control card is network RS232 control card.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described control card sends switching I/O channel information to described keypad by I2C communication bus and stores.
In the seamless matrix switcher of large capacity high definition SDI of the present invention, described PC is connected with described control card by network interface or serial ports.
Implement the seamless matrix switcher of large capacity high definition SDI of the present invention, there is following beneficial effect: due to keypad, core board, SDI card, control card, SDI card comprises SDI input card and the seamless output card of SDI, control card is connected with PC, and the control signal of PC is passed to keypad, keypad is forwarded to core board by control signal, core board is switched to the seamless output card output of SDI by the sdi signal of SDI input card input and carries out seamless switching, so it there will not be blank screen flower screen phenomenon, has real-time seamless handover function.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation in embodiment of the seamless matrix switcher of the large capacity high definition of the present invention SDI;
Fig. 2 is the broken away view of the large seamless matrix switcher of capacity high definition SDI in described embodiment;
Fig. 3 is the software work schematic diagram of the large seamless matrix switcher of capacity high definition SDI in described embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In the seamless matrix switcher embodiment of the large capacity high definition of the present invention SDI, as shown in Figure 1, its broken away view as shown in Figure 2 for its structural representation.As depicted in figs. 1 and 2, the seamless matrix switcher of this large capacity high definition SDI comprises cabinet (not shown), also comprises the keypad 1, core board 2, SDI card 3, control card 4 and the power supply board 5 that are arranged on cabinet inside; Wherein, core board 2 is exchcange cores of large capacity high definition SDI seamless switching matrix signal, keypad 1 is for forwarding matrix system control signal and button control signal being switched in real time, power supply board 5 is for powering to SDI card 3 and core board 2, and is the bridge that sdi signal is connected to core board; Core board 2 is connected with power supply board 5 is vertical.In the present embodiment, SDI card 3 comprises SDI input card 31 and the seamless output card 32 of SDI, SDI input card 31 is connected with core board 2 respectively with the seamless output card 32 of SDI, control card 4 is connected with PC, and the control signal of PC is passed to keypad 1, keypad 1 is forwarded to core board 2 by control signal, and core board 2 is switched to seamless output card 32 outputs of SDI by the sdi signal of SDI input card 31 inputs and carries out seamless switching.Owing to realizing seamless switching, so it there will not be blank screen flower screen phenomenon.
In the present embodiment, keypad 1 is provided with the first seat of communication linkage 11, and core board 2 is provided with second communication Connection Block 21, and keypad 1 is by being connected with core board 2 with second communication Connection Block 21 by the first seat of communication linkage 11 successively.
In the present embodiment, power supply board 5 is provided with a plurality of high frequency seats, and SDI input card 31 is connected with core board 2 by corresponding high frequency seat respectively with the seamless output card 32 of SDI.It is worth mentioning that, high frequency seat is divided into male seat and female seat, the male seat 51 of its high frequency seat is arranged on power supply board 5, SDI input card 31, SDI is seamless, and output card 32 is connected with the female seat 52 of high frequency seat respectively with control card 4, the male seat 51 of high frequency seat supports the use with the female seat 52 of high frequency seat, for by SDI input card 31, SDI is seamless, and output card 32 is connected with core board 2 respectively with control card 4.When being switched to seamless output card 32 outputs of SDI, the sdi signal of inputting just can realize the function of seamless switching.
In the present embodiment, the seamless matrix switcher of this large capacity high definition SDI also comprises connector 6, and core board 2 is flexibly connected with power supply board 5 by connector 6.Specifically, connector 6 comprises the first Connection Block 61 and the second Connection Block 62, wherein, the first Connection Block 61 is arranged on core board 2, the second Connection Block 62 is arranged on power supply board 5, and the first Connection Block 61 and the second Connection Block 62 are used in conjunction with, for core board 2 is connected with power supply board 5.
In the present embodiment, control card 4 is network RS232 control card, and PC is connected with control card 4 by network interface or serial ports.In the present embodiment, core board 2 comprises that MCU(is not shown).Fig. 3 is the software work schematic diagram of the large seamless matrix switcher of capacity high definition SDI in the present embodiment.While opening matrix control software operation, the control command that PC sends the control software of PC end sends to control card 4, control card 4 is transmitted to keypad 1 by I2C communication bus by corresponding switching I/O channel information, the information of keypad 1 bank switching passage is also transmitted to core board 2 by switching command by I2C bus mode again, by core board 2, completes the action that matrix switches.Now the sdi signal of input can be switched to corresponding seamless output channel, realizes the function of seamless switching.
It is worth mentioning that, the number of power supply board 5 is at least two, and the number of core board 2 is one or more.In the present embodiment, the number of power supply board 5 and core board 2 is respectively four.Certainly, in the other situation of the present embodiment, the number of power supply board 5 and core board 2 also can be for other are worth, and their number both can equate, also can be unequal.This large capacity high definition SDI is seamless matrix switcher adopts the method for module assembled to realize whole function, and the hardware by polylith core board 2 splices, and coordinates the operating state of each core board 2 with software, finally realizes the function of the seamless output of large capacity.
In a word, in the present embodiment, control card 4 is that the control signal of the PC software of PC is passed to keypad 1, and keypad 1 is transmitted to core board 2 MCU above again, finally by the MCU configuring matrix chip on core board 2, is realized the exchange of signal.The present embodiment can be realized the function of larger capacity high definition SDI seamless switching matrix by modular mode, it is easy to maintenance, only the parts that break down need be changed, reduce the bad risk that production and processing brings, can meet the application demand that the large construction projects such as safe city, intelligent transportation are badly in need of.User brings smooth video perception when using seamless switching matrix, the blank screen in the time of need not waiting for switching signal or flower screen phenomenon.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the seamless matrix switcher of large capacity high definition SDI, it is characterized in that, comprise cabinet, be arranged on described cabinet inside for keypad matrix system control signal being forwarded and button control signal is carried out switching in real time, core board, SDI card, control card and the power supply board of powering to described SDI card and core board; Described core board is connected with described power supply board is vertical, described SDI card comprises SDI input card and the seamless output card of SDI being connected with described core board respectively, described control card is connected with PC, and the control signal of PC is passed to described keypad, described keypad is forwarded to described core board by described control signal, and described core board is switched to the seamless output card output of described SDI by the sdi signal of described SDI input card input and carries out seamless switching.
2. the seamless matrix switcher of large capacity high definition SDI according to claim 1, is characterized in that, the number of described power supply board is at least two, and the number of described core board is one or more.
3. the seamless matrix switcher of large capacity high definition SDI according to claim 2, is characterized in that, described power supply board is provided with a plurality of high frequency seats, and described SDI input card is connected with described core board by the described high frequency seat of correspondence respectively with the seamless output card of SDI.
4. the seamless matrix switcher of large capacity high definition SDI according to claim 3, is characterized in that, described core board comprises MCU.
5. according to the seamless matrix switcher of large capacity high definition SDI described in claim 1 to 4 any one, it is characterized in that, described keypad is provided with the first seat of communication linkage, described core board is provided with second communication Connection Block, and described keypad is by being connected with described core board with second communication Connection Block by described the first seat of communication linkage successively.
6. according to the seamless matrix switcher of large capacity high definition SDI described in claim 1 to 4 any one, it is characterized in that, also comprise connector, described core board is flexibly connected with described power supply board by described connector.
7. the seamless matrix switcher of large capacity high definition SDI according to claim 6, is characterized in that, described control card is network RS232 control card.
8. the seamless matrix switcher of large capacity high definition SDI according to claim 7, is characterized in that, described control card sends switching I/O channel information to described keypad by I2C communication bus and stores.
9. the seamless matrix switcher of large capacity high definition SDI according to claim 8, is characterized in that, described PC is connected with described control card by network interface or serial ports.
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| CN103607544B (en) | 2016-11-09 |
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