CN103607544B - A kind of seamless matrix switcher of high-capacity high-definition SDI - Google Patents
A kind of seamless matrix switcher of high-capacity high-definition SDI Download PDFInfo
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- CN103607544B CN103607544B CN201310603481.0A CN201310603481A CN103607544B CN 103607544 B CN103607544 B CN 103607544B CN 201310603481 A CN201310603481 A CN 201310603481A CN 103607544 B CN103607544 B CN 103607544B
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Abstract
The present invention proposes a kind of seamless matrix switcher of high-capacity high-definition SDI, including cabinet, be arranged on described cabinet inside for carrying out the keypad, core board, SDI card, control card and the power supply board being powered to described SDI card and core board that forward and switch button control signal in real time to matrix system control signal；Described core board is vertical with described power supply board to be connected, described SDI card includes SDI input card and the seamless output card of SDI being connected respectively with described core board, described control card is connected with PC, and the control signal of PC is passed to described keypad, described control signal is forwarded to described core board by described keypad, and the sdi signal that described SDI input card inputs is switched to the output of described SDI seamless output card and carries out seamless switching by described core board.Implement the seamless matrix switcher of high-capacity high-definition SDI of the present invention, have the advantages that and do not have blank screen Huaping phenomenon, there is real-time seamless handover function.
Description
Technical field
The present invention relates to Inverse problem field, particularly to a kind of seamless matrix switcher of high-capacity high-definition SDI.
Background technology
Existing high definition SDI matrix single device capacity scale is less, the capacity of generally less than 128 × 128, the large-scale Real-Time Scheduling of Large Copacity can only be realized by the cascade of multiple devices, owing to high definition sdi signal communication frequency is high, code stream is big, and the requirement to pcb board is high, therefore realize that the scale on more than single device 128 × 128 tunnel is relatively difficult, a lot of producers can only develop common high definition SDI matrix, there will be the phenomenon of blank screen flower screen, do not have the function of real-time seamless switching during switching.Seamless switching refers to that exporting video image on display device when signal exchange does not haves blank screen, the phenomenon of flower screen, just can realize that in a flash picture switches.
Content of the invention
The technical problem to be solved in the present invention is, during for the above-mentioned switching of prior art, blank screen Huaping phenomenon, the defect without real-time seamless handover function occur, provide and a kind of do not have blank screen Huaping phenomenon, the seamless matrix switcher of high-capacity high-definition SDI with real-time seamless handover function.
The technical solution adopted for the present invention to solve the technical problems is: a kind of seamless matrix switcher of high-capacity high-definition SDI of construction, including cabinet, be arranged on described cabinet inside for carrying out the keypad, core board, SDI card, control card and the power supply board being powered to described SDI card and core board that forward and switch button control signal in real time to matrix system control signal；Described core board is vertical with described power supply board to be connected, described SDI card includes SDI input card and the seamless output card of SDI being connected respectively with described core board, described control card is connected with PC, and the control signal of PC is passed to described keypad, described control signal is forwarded to described core board by described keypad, and the sdi signal that described SDI input card inputs is switched to the output of described SDI seamless output card and carries out seamless switching by described core board.
In the seamless matrix switcher of high-capacity high-definition SDI of the present invention, the number at least two of described power supply board, the number of described core board is one or more.
In the seamless matrix switcher of high-capacity high-definition SDI of the present invention, described power supply board is provided with multiple high frequency seat, and described SDI input card and the seamless output card of SDI are connected with described core board by corresponding described high frequency seat respectively.
In the seamless matrix switcher of high-capacity high-definition SDI of the present invention, described core board includes MCU.
In the seamless matrix switcher of high-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 the second seat of communication linkage, and described keypad is connected with described core board by passing sequentially through described first seat of communication linkage and the second seat of communication linkage.
In the seamless matrix switcher of high-capacity high-definition SDI of the present invention, also including connector, described core board is flexibly connected with described power supply board by described connector.
In the seamless matrix switcher of high-capacity high-definition SDI of the present invention, described control card is network RS232 control card.
In the seamless matrix switcher of high-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 high-capacity high-definition SDI of the present invention, described PC passes through network interface or serial ports is connected with described control card.
Implement the seamless matrix switcher of high-capacity high-definition SDI of the present invention, have the advantages that due to keypad, core board, SDI card, control card, SDI card includes 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 forwards control signals to core board, the sdi signal that SDI input card inputs is switched to the output of SDI seamless output card and carries out seamless switching, so it does not haves blank screen Huaping phenomenon, has real-time seamless handover function by core board.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing of required use in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation in one embodiment of the seamless matrix switcher of high-capacity high-definition SDI of the present invention；
Fig. 2 is the broken away view of the seamless matrix switcher of high-capacity high-definition SDI in described embodiment；
Fig. 3 is the software work schematic diagram of the seamless matrix switcher of high-capacity high-definition SDI in described embodiment.
Detailed description of the invention
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, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into the scope of protection of the invention.
In high-capacity high-definition SDI of the present invention seamless matrix switcher embodiment, its structural representation as it is shown in figure 1, its broken away view as shown in Figure 2.As depicted in figs. 1 and 2, the seamless matrix switcher of this high-capacity high-definition SDI includes cabinet (not shown), also includes keypad the 1st, core board the 2nd, SDI card the 3rd, control card 4 and the power supply board 5 being arranged on cabinet inside；Wherein, core board 2 is the exchcange core of high-capacity high-definition SDI seamless switching matrix signal, keypad 1 is for carrying out forwarding to matrix system control signal and switching button control signal in real time, power supply board 5 is used for being powered to SDI card 3 and core board 2, and is the bridge that sdi signal is connected to core board；Core board 2 is vertical with power supply board 5 to be connected.In the present embodiment, SDI card 3 includes the seamless output card 32 of SDI input card 31 and SDI, SDI input card 31 and SDI is seamless, and output card 32 is connected with core board 2 respectively, control card 4 is connected with PC, and the control signal of PC is passed to keypad 1, keypad 1 forwards control signals to core board 2, and the sdi signal that SDI input card 31 inputs is switched to the output of SDI seamless output card 32 and carries out seamless switching by core board 2.Owing to realizing seamless switching, so it does not haves blank screen Huaping phenomenon.
In the present embodiment, keypad 1 is provided with the first seat of communication linkage 11, and core board 2 is provided with the second seat of communication linkage 21, and keypad 1 is connected with core board 2 by passing sequentially through the first seat of communication linkage 11 and the second seat of communication linkage 21.
In the present embodiment, power supply board 5 is provided with multiple high frequency seat, and SDI input card 31 and SDI is seamless, and output card 32 is connected with core board 2 by corresponding high frequency seat respectively.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 the 31st, SDI is seamless output card 32 and control card 4 are connected with the female seat 52 of high frequency seat respectively, the male seat 51 of high frequency seat supports the use with the female seat 52 of high frequency seat, for being connected seamless for SDI input card the 31st, SDI output card 32 and control card 4 respectively with core board 2.When the sdi signal of input is switched to the function that the output of SDI seamless output card 32 just can realize seamless switching.
In the present embodiment, this high-capacity high-definition SDI is seamless, and matrix switcher also includes connector 6, and core board 2 is flexibly connected with power supply board 5 by connector 6.Specifically, connector 6 includes a connecting seat 61 and the second connection seat 62, wherein, a connecting seat 61 is arranged on core board 2, second connection seat 62 is arranged on power supply board 5, and a connecting seat 61 and the second connection seat 62 with the use of for being attached core board 2 with power supply board 5.
In the present embodiment, control card 4 is network RS232 control card, and PC passes through network interface or serial ports is connected with control card 4.In the present embodiment, core board 2 includes not shown in MCU(figure).Fig. 3 is the software work schematic diagram of the seamless matrix switcher of high-capacity high-definition SDI in the present embodiment.When opening the operation of matrix majorization software, the control command that the control software of PC end sends is sent to control card 4 by PC, corresponding switching I/O channel information is transmitted to keypad 1 by I2C communication bus by control card 4, keypad 1 stores the information of switching channel and by I2C bus mode, switching command is transmitted to core board 2 again, is completed the action of Inverse problem by core board 2.The sdi signal now inputting i.e. can be switched to corresponding seamless output channel, it is achieved the function of seamless switching.
It is noted that the number at least two of power supply board 5, 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 case of the other of the present embodiment, the number of power supply board 5 and core board 2 can be also other values, and their number both can be equal, it is also possible to unequal.This high-capacity high-definition SDI is seamless, and matrix switcher uses the method for module assembled to realize overall function, by the hardware splicing of polylith core board 2, coordinates the duty of each core board 2 with software, finally realizes the function of the seamless output of Large Copacity.
In a word, in the present embodiment, control card 4 is that the control signal by the PC software of PC passes to keypad 1, and keypad 1 relays to core board 2 MCU above, is finally realized the exchange of signal by the MCU configuring matrix chip on core board 2.The present embodiment can realize the function of more capacity high definition SDI seamless switching matrix by modular mode, it is easy to maintenance, only the parts breaking down need to be changed, reduce the bad risk that production and processing brings, the application demand that the large construction project such as safe city, intelligent transportation is badly in need of can be met.User brings the video perception of smoothness when using seamless switching matrix, without waiting for blank screen during switching signal or Huaping phenomenon.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (6)
1. the seamless matrix switcher of high-capacity high-definition SDI, it is characterised in that include cabinet, be arranged on
Described cabinet inside for carrying out forwarding to matrix system control signal and button control signal carried out in real time
The keypad of switching, core board, SDI card, control card and be powered to described SDI card and core board
Power supply board；Described core board is vertical with described power supply board to be connected, described SDI card include respectively with described core
The SDI input card of core connection and the seamless output card of SDI, described control card is connected with PC, and by PC's
Control signal passes to described keypad, and described control signal is forwarded to described core board, institute by described keypad
State core board the sdi signal that described SDI input card inputs is switched to the seamless output card of described SDI export into
Row seamless switching；When opening the operation of matrix majorization software, the control that the control software of PC end sends is ordered by PC
Order is sent to described control card, and corresponding switching input and output are led to by described control card by I2C communication bus
Road information is transmitted to described keypad, and described keypad stores the information of switching channel and passes through switching command
I2C bus mode is transmitted to described core board again, is completed the action of Inverse problem by described core board, now
The sdi signal of input is switched to corresponding seamless output channel, it is achieved the function of seamless switching；Described great Rong
The amount seamless matrix switcher of high definition SDI uses the method for module assembled to realize overall function, by polylith institute
State the hardware splicing of core board, coordinate the duty of each described core board with software, finally realize
The function of output that Large Copacity is seamless；The number at least two of described power supply board, the number of described core board is
One or more；Described power supply board is provided with multiple high frequency seat, described SDI input card and the seamless output of SDI
Card is connected with described core board by corresponding described high frequency seat respectively；Described core board includes MCU；Described
Control card is that the control signal by the PC software of described PC passes to described keypad, and described keypad turns again
Issue the MCU above described core board, finally realized by the MCU configuring matrix chip on described core board
The exchange of signal.
2. the seamless matrix switcher of high-capacity high-definition SDI according to claim 1, it is characterised in that
Described keypad is provided with the first seat of communication linkage, and described core board is provided with the second seat of communication linkage, described
Keypad is by passing sequentially through described first seat of communication linkage and the second seat of communication linkage with described core board even
Connect.
3. the seamless matrix switcher of high-capacity high-definition SDI according to claim 1, it is characterised in that
Also including connector, described core board is flexibly connected with described power supply board by described connector.
4. the seamless matrix switcher of high-capacity high-definition SDI according to claim 3, it is characterised in that
Described control card is network RS232 control card.
5. the seamless matrix switcher of high-capacity high-definition SDI according to claim 4, it is characterised in that
Described control card sends switching I/O channel information to described keypad by I2C communication bus and carries out
Storage.
6. the seamless matrix switcher of high-capacity high-definition SDI according to claim 5, it is characterised in that
Described PC passes through network interface or serial ports is connected with described control card.
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| CN201310603481.0A CN103607544B (en) | 2013-11-25 | 2013-11-25 | A kind of seamless matrix switcher of high-capacity high-definition SDI |
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| CN201310603481.0A CN103607544B (en) | 2013-11-25 | 2013-11-25 | A kind of seamless matrix switcher of high-capacity high-definition SDI |
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| CN103607544B true CN103607544B (en) | 2016-11-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104618628B (en) * | 2015-01-30 | 2018-02-13 | 深圳市中帝威科技有限公司 | A kind of HD video total management system |
| CN104754247A (en) * | 2015-03-27 | 2015-07-01 | 深圳市中帝威科技有限公司 | High definition mixing seamless matrix system having picture division function |
| CN106507186B (en) * | 2016-10-31 | 2020-01-10 | 腾讯科技（深圳）有限公司 | Media information switching method, server and storage medium |
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