CN114339080A - Video matrix switching system realized based on domestic chip - Google Patents
Video matrix switching system realized based on domestic chip Download PDFInfo
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- CN114339080A CN114339080A CN202111459124.2A CN202111459124A CN114339080A CN 114339080 A CN114339080 A CN 114339080A CN 202111459124 A CN202111459124 A CN 202111459124A CN 114339080 A CN114339080 A CN 114339080A
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Abstract
The invention discloses a video matrix switching system realized based on a domestic chip, which comprises an external socket board, a bottom board, a power module and a video matrix board, wherein the external socket board is provided with a plurality of through holes; the external socket board is provided with a power supply, a serial port and a video signal input and output connector; the bottom plate is connected with a connector on an external socket plate through a cable through a CRM connector on the board card; the power module and the video matrix board are respectively connected with the bottom board through the CPCI connector; the invention can simplify the circuit structure of the original video matrix switching system, improve the cleanliness of the interior of the case, reduce the occupied space of the case and reduce the number of fault nodes.
Description
Technical Field
The invention belongs to the technical field of video matrix switching, and particularly relates to a video matrix switching system based on a domestic chip.
Background
Because the former video matrix wants to realize that multiple input and multiple output need be formed by the set of a plurality of integrated circuit boards, these integrated circuit boards most all are industrial to do not have the mounting hole, the fastening is installed fixed bolster and keysets additional through the week and is realized, greatly increased the dismantlement work load of video matrix board like this, be not convenient for maintain.
The original video matrix module has complex insulation processing measures and poor operability, and operation errors are easily caused during installation, so that the insulativity of equipment is damaged.
Disclosure of Invention
In view of this, the invention provides a video matrix switching system implemented based on a home-made chip, which can simplify the circuit structure of the original video matrix switching system, reduce the occupied chassis space, and reduce the number of fault nodes.
The technical scheme for realizing the invention is as follows:
a video matrix switching system realized based on a domestic chip comprises an external socket board, a bottom board, a power module and a video matrix board;
the external socket board is provided with a power supply, a serial port and a video signal input and output connector; the bottom plate is connected with a connector on an external socket plate through a cable through a CRM connector on the board card; the power module and the video matrix board are respectively connected with the bottom board through the CPCI connector.
Further, the video matrix board comprises an RS232 serial port chip, a main chip, a programmable logic chip, a video switching chip, a buffer chip, a semiconductor logic chip, a PAL conversion VGA chip and a power conversion chip;
the RS232 serial port chip receives an external communication instruction, the output end of the RS232 serial port chip is connected with the input end of the main chip, and the internal bus receives a serial port protocol instruction to complete the matrix switching function of the input of 6-path VGA and 2-path PAL video signals and the output of 8-path VGA;
the output end of the main chip is respectively connected with the input end of the programmable logic chip, the input end of the video switching chip and the input end of the PAL conversion VGA chip, so that PAL conversion to VGA is completed, and analog signals and digital signals are synchronously switched; the output end of the main chip is connected with the input ends of the fault indicator lamp and the operation indicator lamp;
the output end of the video switching chip is connected with the input end of the buffer chip, the input end of the video switching chip is connected with the output end of the PAL conversion VGA chip, and an externally input analog signal is input into the input end of the video switching chip; an externally input PAL signal is input into the input end of the PAL conversion VGA chip, and the output end of the PAL conversion VGA chip is connected with the input end of the buffer chip; the input end of the buffer chip is connected with the input end of the programmable logic chip;
the output end of the programmable logic chip is connected with the semiconductor logic chip.
Further, the RS232 serial port chip, the main chip and the programmable logic chip are powered by the power conversion chip to convert DC5V input by the power module into 3.3V voltage for power supply.
Furthermore, the model of the RS232 serial port chip is UT 3232G-P16-R.
Further, the model of the master chip is IAP15W4K61S 4.
Further, model LC4128V of the programmable logic chip.
Has the advantages that:
the video matrix switching system simplifies the circuit structure of the original video matrix switching system, improves the cleanliness of the interior of a case, reduces the occupied space of the case, reduces fault nodes and creates favorable conditions for later maintenance.
Drawings
Fig. 1 is a connection diagram of a video matrix system.
Fig. 2 is a schematic diagram of the operation of the video matrix board card.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
A video matrix switching system structure based on a domestic chip adopts a video matrix plate as an integrated plate clamp type, front quick disassembly and assembly are realized through a pulling aid, an internal power module is designed as a plate clamp type power module and is inserted in parallel with the video matrix plate from the front part of a box body. A bottom plate is installed in the box body, 2 groove positions are arranged, the groove position 1 is a power module, and the groove position 2 is a video matrix. The connection relation diagram of the video matrix system is shown in fig. 1, and a power supply, a serial port, a video signal input connector and a video signal output connector are arranged on an external socket board. The bottom board is connected with a connector on an external socket board by using a coaxial radio frequency cable SFF-50-1.5-1 through a CRM connector on the board card; the power module and the video matrix board are respectively connected with the bottom board through the CPCI connector.
As shown in fig. 2, the video matrix board card mainly comprises an RS232 serial port chip (with the model of UT3232G-P16-R), a main chip (with the model of IAP15W4K61S4), a programmable logic chip (with the model of LC4128V), a video switching chip (with the model of AD8109), a buffer chip (with the model of 7HCT541), a semiconductor logic chip (with the model of 74HCT05 and 74HCT14), a PAL conversion VGA chip (with the model of MS1851), and a power conversion chip (with the model of LM 3940).
The RS232 serial port chip receives a host control instruction from the outside, is connected with the input end of the main chip through the output end of the RS232 serial port chip, and receives a serial port protocol instruction through the internal bus to complete the matrix switching function of the input of 6-path VGA and 2-path PAL video signals and the output of 8-path VGA;
the output end of the main chip is respectively connected with the input end of the programmable logic chip, the input end of the video switching chip and the input end of the PAL conversion VGA chip, thereby completing the conversion from PAL to VGA and synchronously switching analog signals and digital signals. And detecting whether the input and output signals are normal or not, feeding back the detection result to the main chip, and simultaneously reading the register value of the switching circuit by the main chip to obtain the switching state of each channel and the working state of the switching circuit. The main chip processes various state information and feeds back information results to the host through the serial port, the host processes and manages the state information through management software of the equipment, the output end of the main chip is connected with the input ends of the fault indicator lamp and the operation indicator lamp, and the indicator lamp makes corresponding reactions according to corresponding working states.
The main chip is used for carrying out matrix switching control on the video switching chip and the programmable logic chip, the main chip, the video switching chip and the programmable logic chip carry out data transmission, chip control and channel state monitoring through an internal bus, and the main chip also receives state feedback information of the signal detection module. The main chip and the host computer adopt serial ports RS232 for communication, and the main chip analyzes the instruction sent by the host computer and sends the instruction to the video switching chip and the programmable logic chip to complete the matrix switching function; and simultaneously, the main chip feeds back the monitored working state information of the whole video matrix switching equipment to the host through the serial port.
The output end of the video switching chip is connected with the input end of the buffer chip, the input end of the video switching chip is connected with the output end of the PAL conversion VGA chip, and an externally input analog signal is input into the input end of the video switching chip; an externally input PAL signal is input into the input end of the PAL conversion VGA chip, and the output end of the PAL conversion VGA chip is connected with the input end of the buffer chip; the digital signal input from outside is input to the input end of the buffer chip, and the output end of the buffer chip is connected with the input end of the programmable logic chip.
The output of the programmable logic chip is connected to the input of the semiconductor logic chip 74HCT 05; the output of the 74HCT05 chip is connected to the input of the 74HCT14 chip.
The buffer chip and the semiconductor logic chips 74HCT05 and 74HCT14 are directly powered by DC5V output by the power module, and the serial RS232 serial chip, the main chip and the programmable logic chip are powered by the LM3940 power conversion chip to convert DC5V input by the power module into 3.3V voltage for power supply.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A video matrix switching system realized based on a domestic chip is characterized by comprising an external socket board, a bottom board, a power module and a video matrix board;
the external socket board is provided with a power supply, a serial port and a video signal input and output connector; the bottom plate is connected with a connector on an external socket plate through a cable through a CRM connector on the board card; the power module and the video matrix board are respectively connected with the bottom board through the CPCI connector.
2. The video matrix switching system implemented on the basis of the domestic chip as claimed in claim 1, wherein the video matrix board comprises an RS232 serial port chip, a main chip, a programmable logic chip, a video switching chip, a buffer chip, a semiconductor logic chip, a PAL conversion VGA chip, and a power conversion chip;
the RS232 serial port chip receives an external communication instruction, the output end of the RS232 serial port chip is connected with the input end of the main chip, and the internal bus receives a serial port protocol instruction to complete the matrix switching function of the input of 6-path VGA and 2-path PAL video signals and the output of 8-path VGA;
the output end of the main chip is respectively connected with the input end of the programmable logic chip, the input end of the video switching chip and the input end of the PAL conversion VGA chip, so that PAL conversion to VGA is completed, and analog signals and digital signals are synchronously switched; the output end of the main chip is connected with the input ends of the fault indicator lamp and the operation indicator lamp;
the output end of the video switching chip is connected with the input end of the buffer chip, the input end of the video switching chip is connected with the output end of the PAL conversion VGA chip, and an externally input analog signal is input into the input end of the video switching chip; an externally input PAL signal is input into the input end of the PAL conversion VGA chip, and the output end of the PAL conversion VGA chip is connected with the input end of the buffer chip; the input end of the buffer chip is connected with the input end of the programmable logic chip;
the output end of the programmable logic chip is connected with the semiconductor logic chip.
3. The video matrix switching system implemented on the basis of the domestic chip as claimed in claim 2, wherein the RS232 serial port chip, the main chip and the programmable logic chip are powered by the power conversion chip converting DC5V inputted from the power module into 3.3V.
4. The video matrix switching system implemented on the basis of the domestic chip as claimed in claim 2, wherein the model of the RS232 serial port chip is UT 3232G-P16-R.
5. A video matrix switching system implemented on the basis of a domestic chip as claimed in claim 2, wherein the model of the main chip is IAP15W4K61S 4.
6. A home chip based video matrix switching system as claimed in claim 2 wherein the programmable logic chip is model LC 4128V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111459124.2A CN114339080A (en) | 2021-12-02 | 2021-12-02 | Video matrix switching system realized based on domestic chip |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111459124.2A CN114339080A (en) | 2021-12-02 | 2021-12-02 | Video matrix switching system realized based on domestic chip |
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| CN201444663U (en) * | 2009-07-10 | 2010-04-28 | 大连捷成实业发展有限公司 | Communication framework of modularization video-audio signal processing platform |
| CN201623720U (en) * | 2010-04-22 | 2010-11-03 | 沈阳帝信通信电子工程有限公司 | Embedded type interface board supporting POE and double power supply |
| CN101998110A (en) * | 2009-08-31 | 2011-03-30 | 北京维盛网域科技有限公司 | Opened-type display control and command equipment |
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| CN203691822U (en) * | 2013-12-27 | 2014-07-02 | 北京控制工程研究所 | Cabinet structure with combination of single bus plate and dual bus plate |
| CN104469209A (en) * | 2013-09-17 | 2015-03-25 | 天津智树电子科技有限公司 | 3U multi-channel DVI OSD video board |
| CN105721795A (en) * | 2016-01-21 | 2016-06-29 | 西安诺瓦电子科技有限公司 | Video matrix stitching device and switching bottom plate thereof |
| CN105979227A (en) * | 2016-06-29 | 2016-09-28 | 国网福建省电力有限公司 | Electricity intranet and internet integrated video transmission device based on CPCI interface |
| US20190158778A1 (en) * | 2017-11-17 | 2019-05-23 | Aten International Co., Ltd. | Apparatus and method for switching video signal |
| CN212850752U (en) * | 2020-09-08 | 2021-03-30 | 中国电子科技集团公司第五十二研究所 | Universal video matrix circuit |
-
2021
- 2021-12-02 CN CN202111459124.2A patent/CN114339080A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201444663U (en) * | 2009-07-10 | 2010-04-28 | 大连捷成实业发展有限公司 | Communication framework of modularization video-audio signal processing platform |
| CN101998110A (en) * | 2009-08-31 | 2011-03-30 | 北京维盛网域科技有限公司 | Opened-type display control and command equipment |
| CN201623720U (en) * | 2010-04-22 | 2010-11-03 | 沈阳帝信通信电子工程有限公司 | Embedded type interface board supporting POE and double power supply |
| CN202183831U (en) * | 2011-08-16 | 2012-04-04 | 浪潮电子信息产业股份有限公司 | Video main board of CPCI (Compact Peripheral Component Interconnect) standard interface |
| CN104469209A (en) * | 2013-09-17 | 2015-03-25 | 天津智树电子科技有限公司 | 3U multi-channel DVI OSD video board |
| CN203691822U (en) * | 2013-12-27 | 2014-07-02 | 北京控制工程研究所 | Cabinet structure with combination of single bus plate and dual bus plate |
| CN105721795A (en) * | 2016-01-21 | 2016-06-29 | 西安诺瓦电子科技有限公司 | Video matrix stitching device and switching bottom plate thereof |
| CN105979227A (en) * | 2016-06-29 | 2016-09-28 | 国网福建省电力有限公司 | Electricity intranet and internet integrated video transmission device based on CPCI interface |
| US20190158778A1 (en) * | 2017-11-17 | 2019-05-23 | Aten International Co., Ltd. | Apparatus and method for switching video signal |
| CN212850752U (en) * | 2020-09-08 | 2021-03-30 | 中国电子科技集团公司第五十二研究所 | Universal video matrix circuit |
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