CN201576432U - Multi-media display control unit - Google Patents
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- CN201576432U CN201576432U CN2009202611485U CN200920261148U CN201576432U CN 201576432 U CN201576432 U CN 201576432U CN 2009202611485 U CN2009202611485 U CN 2009202611485U CN 200920261148 U CN200920261148 U CN 200920261148U CN 201576432 U CN201576432 U CN 201576432U
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Abstract
The utility model provides a multi-media display control unit comprising an embedded microprocessor, a video processing switcher and an FPGA large-scale programmable chip, which are all integrated in the display control unit to build a set of multi-media display player which has high definition of display image and rich multi-media playing input/output interface. The multi-media display player is not only compatible with the synchronous playback of the programmes of a computer, a mobile TV and a web TV, but also compatible with the off-line asynchronous playback of the programmes of a multi-media card, as well as the wireless data communication and application of a touch screen. The multi-media display player is also provided with a plurality of LED screen playback interfaces and an LCD display interface, so as to form various different multi-media display and LED display systems and meet the requirements of the user and the equipment manufacturer in different industries like LED display advertising screen network, LED advertising bus stop board and financial multi-media terminal.
Description
Technical field
The utility model relates to and shows the control field, relates in particular to a kind of multimedia display control device.
Background technology
Progress of science and technology has obtained widespread use in industry-by-industry, show that at continuous growth LED industry is equally also benefited a great deal, and various LED display controller products also segment from the sector gradually, the product of occurred that a hundred flowers blossom, competitively contending in beauty.Generally speaking controller is divided into two development courses: one is the synchronized model controller by computer drives, but another is the asynchronous type controller of divorced from computer operation; LED display also is divided into synchronous display screen and asynchronous display screen two big classes according to display mode, display screen has the characteristics of high resolving power, high gray scale, full color synchronously, under computer control, work, show high-quality video pictures synchronously, its controller is general to adopt extensive programmable chip FPGA to realize.Asynchronous display screen is applicable to resolution, gray scale, the less demanding occasion of color, but divorced from computer work, and asynchronous demonstration graphic screen and Word message, its controller generally adopt microprocessor to realize.
The multimedia display controller is according to the difference of display mode in the prior art, adopt different control chips to realize that control shows respectively, this display control unit function singleness, range of application is limited, has been difficult to satisfy the higher demand of every profession and trade to the LED display integrated application.How to use the technical advantage of each side, develop a kind of multimedia display controller with multiple function, make it both can show high-quality video pictures synchronously, full color video, graphic screen and Word message that also can the asynchronous display of high resolution of off line, can also support various multimedia equipments, the for example access of multimedia card, USB flash disk, portable hard drive, touch-screen, and by the gps satellite positioning system public transit vehicle is monitored etc. in real time, it is necessary to adapt to the development need that modern society's information shows.
The utility model content
The purpose of this utility model is, the defective that exists at above-mentioned prior art provide a kind of promptly can be applied to synchronous display screen also can be on asynchronous display screen the clear display video, and have the multimedia display control device of versatile interface.
The technical solution of the utility model is as follows: a kind of multimedia display control device, it is characterized in that: comprise the embedded microprocessor, Video processing switch and the FPGA programmable chip that are integrated in the described display control unit, described embedded microprocessor links to each other with described Video processing switch and FPGA programmable chip respectively; Described embedded microprocessor is used for being responsible for the control of system management, communication and data, and the signal source that will come from external-connected port exports described Video processing switch and external LCD display to after handling; Described Video processing switch is used to receive at least one road video signal source, exports the high clear video image that generates to described FPGA programmable chip; Described FPGA programmable chip connects at least one LED screen driving interface, is used to control the synchronous or asynchronous play of program, exports video image to external light-emitting diode display by described LED screen driving interface.。
Described multimedia display control device, wherein, described embedded microprocessor also is connected with FLASH storer and dynamic RAM, and described FLASH storer is used for the storage of configuration order, program, screen body parameter and curing data; Described dynamic RAM is used for the buffer memory of the various transaction informations of described embedded microprocessor.
Described multimedia display control device, wherein, described external-connected port comprises network interface, adsl interface, portable hard drive interface, multimedia card interface and the USB interface that links to each other with described embedded microprocessor respectively, described embedded microprocessor obtains video frequency program, picture, advertisement and the Word message that in advance prestores from the External memory equipment that links to each other with described external-connected port, plays or debugs by the LCD screen driving interface outputting video signal that links to each other with described embedded microprocessor.
Described multimedia display control device, wherein, described embedded microprocessor also respectively with UART serial ports, AD interface, keyboard interface, dial interface, universal serial bus I
2C interface links to each other, and is used for according to the external distinct device of the demand of system.
Described multimedia display control device, wherein, described network interface includes the RJ45 socket of 10/100M Ethernet PHY chip and the band transformer that links to each other with described Ethernet PHY chip; Described adsl interface includes ADC/DAC chip, line drive, the transformer that connects successively, and wherein any socket of RJ11 or RJ45 or USB.
Described multimedia display control device, wherein, described embedded microprocessor also links to each other with reserve battery with digital display unit, and described digital display unit is used for display status information, the little power consumption work when described reserve battery is used to keep system cut-off and the operation of real-time clock.
Described multimedia display control device, wherein, described Video processing switch comprises the two-path video input signal source, one the tunnel is the LCD vision signal of described embedded microprocessor output, another road is the mobile television signal from the mobile TV interface input that links to each other with described Video processing switch, and described embedded microprocessor control is selected wherein to input to described FPGA programmable chip by described Video processing switch after the high-quality Video processing of one tunnel vision signal process.
Described multimedia display control device, wherein, described FPGA programmable chip has three LED screen driving interface, and LED screen driving interface comprises the RJ45 socket of PHY chip and the band transformer that links to each other with described PHY chip, is used to support the high-resolution LED full-color screen to show; The 2nd LED screen driving interface comprises Low Voltage Differential Signal transmission serializer and the RJ45 socket that described Low Voltage Differential Signal transmission serializer links to each other, and is used to support intermediate-resolution LED picture and text screen or full-color screen to show; The 3rd LED screen driving interface comprises 74HC245 chip and the IC socket 20P that links to each other with described 74HC245 chip, is used to support low resolution LED picture and text screen or bar screen to show.
Described multimedia display control device, wherein, described FPGA programmable chip also is connected with wireless communication data interface, sensor input interface, control output interface, download interface and optical fiber or gigabit networking interface respectively.
Described multimedia display control device, wherein, described FPGA programmable chip also is connected with synchronous DRAM and serial memory, and described synchronous DRAM is used for the buffer memory of described FPGA programmable chip Visual Display Data; Described serial memory is used to store the program code of described FPGA programmable chip.
The utility model is with embedded microprocessor, the Video processing switch, extensive programmable chip FPGA three is integrated in the display control unit, made up a cover display image image quality height, the multimedia display player that the multimedia IO interface is abundant, not only support computing machine, mobile TV, the synchronous playing of network TV program, also support the off line asynchronous play of multimedia card program, support wireless data communication, touch-screen applications, also have a plurality of LED screen playback interface and a LCD display interface, in order to constitute various multimedia display and LED display system, can be satisfied with LED display ads screen net, public transport LED advertisement station board, the demand of finance different industries user such as multimedia terminal and equipment manufacturers.
Description of drawings
Fig. 1 is the utility model multimedia display control device structural representation.
Embodiment
The utility model provides a kind of multimedia display control device, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and advantage, below with reference to the accompanying drawing embodiment that develops simultaneously the utility model further described.
Image resolution ratio is low when solving the asynchronous demonstration of the asynchronous display screen off line of prior art LED, the problem of the abundant and function singleness of color, the present invention is with embedded microprocessor, Video processing switch and extensive programmable chip FPGA three are integrated in the display control unit, it is mainly conceived: will come from portable hard drive, multimedia card, one of the signal source of External memory equipments such as USB flash disk and network video source are delivered to the Video processing switch by embedded microprocessor, also external one road mobile television signal of Video processing switch, the Video processing switch is selected road vision signal in the two-path video source under embedded microprocessor control, through high-quality Video processing, the high clear video image of generation standard exports extensive programmable chip FPGA to, finishes synchronous or asynchronous demonstration from video signal HD image on full-color LED display screen in varying input signal source by FPGA; And all right data message that directly receives from embedded microprocessor or wireless communication module of FPGA, on external display terminal, play; Multimedia display playing device after embedded microprocessor, Video processing switch and extensive programmable chip are integrated, except that having the multiport input, also have a plurality of different display drivers outputs, can construct the display screen that satisfies various different demands thus, thereby enrich the playing function of the asynchronous display screen of LED.
In conjunction with shown in Figure 1, the utility model multimedia display control device comprises embedded microprocessor 1, Video processing switch 2, three master chips of FPGA3, also comprises FLASH storer 11, dynamic RAM DRAM12, digital display unit 13, reserve battery 14 and 100,000,000 network interfaces 15, adsl interface 16, AD interface 17, keyboard interface 18, portable hard drive interface 19, multimedia card interface 1A, usb 1 B, UART serial ports 1C, dial interface 1D, the universal serial bus I that link to each other with embedded microprocessor 1 successively
2C interface 1E and LCD screen driving interface 1F; Also comprise the mobile TV interface 21 that links to each other with Video processing switch 2; And comprise synchronous DRAM SDRAM31, the serial memory EPCS32, sensor input interface 33, control output interface 34, LED screen driving interface 35,36 and 37, wireless communication interface 38, download interface 39, optical fiber or gigabit networking interface 3A and the serdes/PHY chip 3B that link to each other with extensive programmable chip FPGA3 successively.
Wherein, embedded microprocessor 1 is connected with two chip signals of Video processing switch 2 and FPGA3 respectively, embedded microprocessor 1 is used to support embedded OS WinCE or Linux, itself has 10/100M Ethernet MAC, SD or abundant interface such as DF card, portable hard drive, USB, AD, keyboard, LCD and asynchronous UART, and has a real-time clock, the required peripheral hardware requirement of native system be can satisfy, management and the communication of host computer and the control of program source of the required external unit of system, man-machine interface mainly are responsible for; Embedded microprocessor 1 also links to each other with FLASH storer 11 chips with dynamic RAM DRAM 12 respectively, dynamic RAM DRAM 12 is used for the buffer memory of the various issued transaction of embedded microprocessor, FLASH storer 11 is non-volatile erasable memories, be used for the storage of configuration order, program, screen body parameter and curing data, configuration order or data that embedded microprocessor 1 can call in the FLASH storer are carried out corresponding operation.
Embedded microprocessor 1 comprises with all the other device annexations and concrete function:
Embedded microprocessor 1 links to each other with digital display unit 13 by the I/O mouth, is used for display status information;
Embedded microprocessor 1 links to each other with reserve battery 14, the operation of little power consumption work when being used for power down and assurance real-time clock;
Embedded microprocessor 1 has 10/100M Ethernet MAC interface, so can be by network interface 15 online, renewal, clock alignment so as to the issue, External memory equipment program file and the playlist that realize Internet video synchronous playing, real-time information and weather, and by computer realization Long-distance Control and monitoring etc., network interface 15 comprises the RJ45 socket 152 of 10/100M Ethernet PHY chip 151 and band transformer, and embedded microprocessor 1 links to each other by the RJ45 socket 152 of 10/100M Ethernet PHY chip 151 with the band transformer;
Embedded microprocessor 1 also is connected with ASDL interface 16, make multimedia display controller of the present utility model have local telephone network broadband internet access function flexibly, increased the obtain manner of video resource, so that the user selects for use, ASDL interface 16 can select for use the general-purpose chip group to constitute, comprise ADC/DAC chip 161, line drive 162, transformer 163 and RJ11 (or RJ45 or USB) socket 164, embedded microprocessor 1 links to each other with line drive 162, transformer 163 and RJ11 (or RJ45 or USB) socket 164 successively by ADC/DAC chip 161;
The AD interface 17 of embedded microprocessor 1 is connected with touch panel sensor, supports touch-screen applications;
Embedded microprocessor 1 links to each other with external keyboard by keyboard interface 18, to satisfy the user that demand is arranged;
Embedded microprocessor 1 is connected with USB 2.0 or portable hard drive by hard-disk interface 19, be connected with SD or DF card by multimedia card interface 1A, link to each other with USB flash disk by usb 1 B, embedded microprocessor 1 can obtain video frequency program, picture, advertisement and the Word message etc. that prestore from External memory equipments such as portable hard drive, multimedia card, USB flash disks in advance and carry out asynchronous play, by LCD screen driving interface 1F output LCD vision signal.
Embedded microprocessor 1 is mainly used in debugging and field maintemance by asynchronous UART serial ports 1C and PC communication;
Embedded microprocessor 1 also is connected with dial interface 1D by the I/O mouth, and dial interface 1D is a 4-8 position BCD dial, is used for function selecting;
Embedded microprocessor 1 also has I
2C (or SPI) interface 1E makes things convenient for the user to select for use;
Embedded microprocessor 1 has a plurality of USB interface, is used for USB flash disk or other application;
Embedded microprocessor 1 will come from portable hard drive, multimedia card, one of the signal source of External memory equipments such as USB flash disk or network video source or ADSL video source are handled the generation digital video image signal by embedded microprocessor and are divided two-way output, the LCD interface 1F of leading up to is sent to LCD display, be used to show the video frequency program of current broadcast, also can monitor in real time user's LED display, Video processing switch 2 then is sent on another road;
The real-time clock that embedded microprocessor 1 inside has can be used for demonstration and the timing controlled of date, time;
Embedded microprocessor 1 is also by I/O mouth and 2 two-way linking to each other of Video processing switch, being used for the switching in control of video source communicates by letter with exchanges data between the two, wherein, Video processing switch 2 major functions are selection and Video processing of video playback program source, Video processing switch 2 has the two-path video input, one the tunnel is the LCD vision signal of embedded microprocessor 1 output, another road is the mobile television signal from 21 inputs of mobile TV interface, Video processing switch 2 is selected wherein one tunnel vision signal under embedded microprocessor 1 control, after carrying out high-quality Video processing, for example interlacing is changeed line by line, image edge processing, high speed dynamic image processing etc., the high clear video image of generation standard inputs to coupled extensive programmable chip FPGA 3, to on full-color LED display screen, show from the video signal in varying input signal source by the LED driving interface by FPGA 3 again, thereby need not extra front end video processing equipment, just can improve the display quality and the effect of LED display, Video processing switch 2 can select for use the main flow video frequency processing chip in the Digital Television to make up;
Embedded microprocessor 1 is also by I/O mouth and extensive 3 two-way linking to each other of programmable chip FPGA, set the parameter of LED display for use in host computer (as passing through PC), the broadcast of control program, the monitoring and the data of carrying out brilliance control and screen state communicate back, and transmit extendable display screen curtain data etc.;
FPGA 3 is extensive programmable chips, major function is to finish the monitoring of generation, output and ambient condition of conversion, intercepting, distribution and the LED video data and the control signal of video input data, thereby realize that video frequency program is in the demonstration of LED display terminal and the passback of monitoring information, its principle of work is identical with the principle of work of the fpga chip that the synchronous display controller of conventional LED adopts, so do not do detailed description.
FPGA 3 has LED multi-path video data control signal and outputs to LED screen driving interface (35,36 and 37), support the screen display of plurality of specifications, FPGA 3 comprises with the annexation and the concrete function of periphery: LED screen driving interface 35 is meant a kilomega network driving interface, the RJ45 socket 352 that comprises Ethernet PHY chip 351 and band transformer, be used to support the high-resolution LED full-color screen to show, FPGA 3 links to each other by the RJ45 socket 352 of Ethernet PHY chip 351 with the band transformer; The 2nd LED screen driving interface 36 of expansion is a Low Voltage Differential Signal transmission LVDS bus interface, comprise LVDS serializer 361 and RJ45 socket 362, be used to support intermediate-resolution LED picture and text screen or full-color screen to show, the LED display terminal that for example is used for touch-screen, FPGA 3 links to each other with RJ45 socket 362 by Low Voltage Differential Signal transmission LVDS serializer 361; The 3rd LED screen driving interface 37 of expansion is a CMOS bus driver, comprise 74HC245 chip 371 and IC socket 20P 372, be used to support low resolution LED picture and text screen or bar screen to show, the information of sending a car and the traffic information display that for example are used for public bus network, and FPGA 3 links to each other with IC socket 20P 372 by 74HC245 chip 371.
FPGA 3 has two storeies, and one is synchronous DRAM SDRAM 31, is used for the buffer memory of FPGA 3 Visual Display Datas; One is serial memory EPCS 32, is used to store the program code of FPGA 3; FPGA 3 also comprises a sensor input interface 33, is used for support temperature, ambient brightness, smog or other optional sensor multichannel input, can realize monitoring the working environment of LED display, so that control, for example brilliance control, temperature control and warning etc.; Control output interface 34 refers to fan control, the power supply control of LED screen or other optional multichannel control function of tape relay; Wireless communication data interface 38 preferred GSM/GPRS (General Packet Radio Service, GPRS (General Packet Radio Service)) can receive the data message of GPRS pattern, for example the positional information of bus; Also having a download interface 39 is 10P sockets, is used for JTAC debugging and the program Solidification of FPGA 3;
Optionally, FPGA 3 also has optical fiber or gigabit networking interface 3A and serdes/PHY chip 3B, and they are identical with device and model that the synchronous display screen of conventional LED adopts, can be directly used in the synchronous playing of computer-controlled video frequency program.
In sum, because embedded microprocessor, Video processing switch and extensive three chips of programmable chip FPGA are integrated, and on different chips, be equipped with various IO interface, made up the multimedia display playback equipment that a cover has multiple function, the image quality and the quality of display image have not only been improved, also can be in order to constituting various multimedia display and LED display system, thus satisfied the demand of different industries user and equipment manufacturers.
It should be noted that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. multimedia display control device, it is characterized in that: comprise the embedded microprocessor, Video processing switch and the FPGA programmable chip that are integrated in the described display control unit, described embedded microprocessor links to each other with described Video processing switch and FPGA programmable chip respectively; Described embedded microprocessor is used for being responsible for the control of system management, communication and data, and the signal source that will come from external-connected port exports described Video processing switch and external LCD display to after handling; Described Video processing switch is used to receive at least one road video signal source, exports the high clear video image that generates to described FPGA programmable chip; Described FPGA programmable chip connects at least one LED screen driving interface, is used to control the synchronous or asynchronous play of program, exports video image to external light-emitting diode display by described LED screen driving interface.
2. multimedia display control device according to claim 1, it is characterized in that, described embedded microprocessor also is connected with FLASH storer and dynamic RAM, and described FLASH storer is used for the storage of configuration order, program, screen body parameter and curing data; Described dynamic RAM is used for the buffer memory of the various transaction informations of described embedded microprocessor.
3. multimedia display control device according to claim 1, it is characterized in that, described external-connected port comprises network interface, adsl interface, portable hard drive interface, multimedia card interface and the USB interface that links to each other with described embedded microprocessor respectively, described embedded microprocessor obtains video frequency program, picture, advertisement and the Word message that in advance prestores from the External memory equipment that links to each other with described external-connected port, plays or debugs by the LCD screen driving interface outputting video signal that links to each other with described embedded microprocessor.
4. multimedia display control device according to claim 3 is characterized in that, described embedded microprocessor also respectively with UART serial ports, AD interface, keyboard interface, dial interface, universal serial bus I
2C interface links to each other, and is used for according to the external distinct device of the demand of system.
5. multimedia display control device according to claim 3 is characterized in that, described network interface includes the RJ45 socket of 10/100M Ethernet PHY chip and the band transformer that links to each other with described Ethernet PHY chip; Described adsl interface includes ADC/DAC chip, line drive, the transformer that connects successively, and wherein any socket of RJ11 or RJ45 or USB.
6. multimedia display control device according to claim 1, it is characterized in that, described embedded microprocessor also links to each other with reserve battery with digital display unit, described digital display unit is used for display status information, the little power consumption work when described reserve battery is used to keep system cut-off and the operation of real-time clock.
7. multimedia display control device according to claim 1, it is characterized in that, described Video processing switch comprises the two-path video input signal source, one the tunnel is the LCD vision signal of described embedded microprocessor output, another road is the mobile television signal from the mobile TV interface input that links to each other with described Video processing switch, and described embedded microprocessor control is selected wherein to input to described FPGA programmable chip by described Video processing switch after the high-quality Video processing of one tunnel vision signal process.
8. multimedia display control device according to claim 1, it is characterized in that, described FPGA programmable chip has three LED screen driving interface, the one LED screen driving interface comprises the RJ45 socket of PHY chip and the band transformer that links to each other with described PHY chip, is used to support the high-resolution LED full-color screen to show; The 2nd LED screen driving interface comprises Low Voltage Differential Signal transmission serializer and the RJ45 socket that described Low Voltage Differential Signal transmission serializer links to each other, and is used to support intermediate-resolution LED picture and text screen or full-color screen to show; The 3rd LED screen driving interface comprises 74HC245 chip and the IC socket 20P that links to each other with described 74HC245 chip, is used to support low resolution LED picture and text screen or bar screen to show.
9. multimedia display control device according to claim 8, it is characterized in that described FPGA programmable chip also is connected with wireless communication data interface, sensor input interface, control output interface, download interface and optical fiber or gigabit networking interface respectively.
10. multimedia display control device according to claim 1, it is characterized in that, described FPGA programmable chip also is connected with synchronous DRAM and serial memory, and described synchronous DRAM is used for the buffer memory of described FPGA programmable chip Visual Display Data; Described serial memory is used to store the program code of described FPGA programmable chip.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740128A (en) * | 2012-06-12 | 2012-10-17 | 康佳集团股份有限公司 | Video transmission device with surfing function and implementation method thereof |
| CN103024291A (en) * | 2012-12-05 | 2013-04-03 | 江苏清投视讯科技有限公司 | Touch type video switching matrix controller |
| CN103021373A (en) * | 2012-11-15 | 2013-04-03 | 中航华东光电有限公司 | Graph generator based on FPAG (Field-Programmable Gate Array) and working method thereof |
| CN104021103A (en) * | 2014-06-04 | 2014-09-03 | 广州中海达卫星导航技术股份有限公司 | Serial port expansion device for embedded microprocessor |
| CN104238422A (en) * | 2014-09-16 | 2014-12-24 | 西安诺瓦电子科技有限公司 | Tunnel monitoring system and embedded asynchronous control device |
| CN104410884A (en) * | 2014-12-05 | 2015-03-11 | 叶建中 | Synchronous and asynchronous playing player for LED and LCD display screens |
| CN104822040A (en) * | 2015-04-28 | 2015-08-05 | 深圳市载德光电技术开发有限公司 | Multi-format video sequence generation system based on FPGA and method thereof |
| CN105243988A (en) * | 2015-10-08 | 2016-01-13 | 西安诺瓦电子科技有限公司 | Embedded LED display controller |
| CN105304018A (en) * | 2015-11-13 | 2016-02-03 | 苏州扬佛自动化设备有限公司 | Interaction display screen control circuit |
| CN115914508A (en) * | 2022-10-31 | 2023-04-04 | 贵州电网有限责任公司 | Automatic signal detection switching device and method applied to video terminal |
| CN116343699A (en) * | 2023-02-16 | 2023-06-27 | 深圳市羿智科技有限公司 | Display screen driving system |
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| CN102740128A (en) * | 2012-06-12 | 2012-10-17 | 康佳集团股份有限公司 | Video transmission device with surfing function and implementation method thereof |
| CN102740128B (en) * | 2012-06-12 | 2017-12-22 | 康佳集团股份有限公司 | A kind of video transmission device and its implementation with function of surfing the Net |
| CN103021373A (en) * | 2012-11-15 | 2013-04-03 | 中航华东光电有限公司 | Graph generator based on FPAG (Field-Programmable Gate Array) and working method thereof |
| CN103024291A (en) * | 2012-12-05 | 2013-04-03 | 江苏清投视讯科技有限公司 | Touch type video switching matrix controller |
| CN104021103B (en) * | 2014-06-04 | 2017-08-29 | 广州中海达卫星导航技术股份有限公司 | A kind of serial ports expansion device of embedded microprocessor |
| CN104021103A (en) * | 2014-06-04 | 2014-09-03 | 广州中海达卫星导航技术股份有限公司 | Serial port expansion device for embedded microprocessor |
| CN104238422A (en) * | 2014-09-16 | 2014-12-24 | 西安诺瓦电子科技有限公司 | Tunnel monitoring system and embedded asynchronous control device |
| CN104410884A (en) * | 2014-12-05 | 2015-03-11 | 叶建中 | Synchronous and asynchronous playing player for LED and LCD display screens |
| CN104822040A (en) * | 2015-04-28 | 2015-08-05 | 深圳市载德光电技术开发有限公司 | Multi-format video sequence generation system based on FPGA and method thereof |
| CN104822040B (en) * | 2015-04-28 | 2018-06-19 | 深圳市载德光电技术开发有限公司 | A kind of multiple format video sequence generation system and method based on FPGA |
| CN105243988A (en) * | 2015-10-08 | 2016-01-13 | 西安诺瓦电子科技有限公司 | Embedded LED display controller |
| CN105304018A (en) * | 2015-11-13 | 2016-02-03 | 苏州扬佛自动化设备有限公司 | Interaction display screen control circuit |
| CN115914508A (en) * | 2022-10-31 | 2023-04-04 | 贵州电网有限责任公司 | Automatic signal detection switching device and method applied to video terminal |
| CN116343699A (en) * | 2023-02-16 | 2023-06-27 | 深圳市羿智科技有限公司 | Display screen driving system |
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