CN103971641A - Led display screen control system - Google Patents
Led display screen control system Download PDFInfo
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- CN103971641A CN103971641A CN201410214066.0A CN201410214066A CN103971641A CN 103971641 A CN103971641 A CN 103971641A CN 201410214066 A CN201410214066 A CN 201410214066A CN 103971641 A CN103971641 A CN 103971641A
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Abstract
The invention discloses an LED display screen control system. The LED display screen control system comprises a driver board and an LED drive circuit, wherein the driver board is provided with a USB interface and used for receiving first video signals through the USB interface and converting the first video signals into second video signals; the LED drive circuit is connected with the driver board and an LED display screen and used for driving the LED display screen to display video content corresponding to the second video signals. By means of the LED display screen control system, the problem that the signal transmission bandwidth of an LED display screen control system in the prior art is narrow is solved, and the signal transmission bandwidth of the LED display screen control system is increased.
Description
Technical field
The present invention relates to LED field, in particular to a kind of LED display control system.
Background technology
Existing LED (light emitting diode) display screen control system adopts gigabit Ethernet to carry out vision signal and control signal transmission conventionally, adopt the LED display control system bandwidth of Ethernet narrower, if the video data of transmission 8bit color, maximum band loading point number is less than 75W pixel (60Hz repetition frequency), be less than the load capacity of 1024*768@60p (VGA), wherein, load capacity main manifestations is in the situation of same input resolution and same repetition frequency, and a road signal transmission can be controlled the region that LED shows.
At present, array control system or the LED full-color display screen control systems of adopting more, wherein, array control system comprises the pair control plate of a master control borad, some packaged several scanning board compositions in LED display casing, carry out the transmission of vision signal and control signal by the mode of gigabit Ethernet, realize the differentiation of vision signal and control signal by coded system, the problem such as while having solved to a certain extent LED display displaying video, repetition frequency is not high, gray shade scale is not enough.
Along with the development of current display technique, the 4K even resolution display technique of 8K is entering user's sight line fast, the bandwidth of existing LED control program taking gigabit Ethernet as signal transmission is obviously inadequate, as above-mentioned calculating can be found out, current video source has adopted 10bit in order to reach better display effect, the color of 12bit (video pictures 10bit implication be exactly picture can taking 10 as the quantity control gradation of binary number be GTG).Conventionally 8bit is equivalent to 256 grades of GTGs---often say to obtain 24 true color; And 10bit is just equivalent to 1024 grades of GTGs.Three primary colours are mixed into colour, increase 1bit and just mean that number of colors increases by 8 times.10bit is just equivalent to 1024 cube---and 1073741824, be about 10.7 hundred million looks.Much larger than 1,670 ten thousand looks of 8bit.If adopt Ethernet to transmit because bandwidth is narrower, can cause band carrying capacity to reduce.Wherein in order to overcome the minimizing with carrying capacity, mostly adopt the mode of color expansion to process, but when demonstration, cannot truly reduce the color of video, cause disappearance and the distortion of video content.
In addition, open from physical link, the equipment that adopts the control system of Ethernet to need front end to have vision signal switching to be network signal, can cause on a screen, there is a lot of wire rods like this, causes the loaded down with trivial details cost of wiring high.
For the narrower problem of signal transmission bandwidth of LED display control system in prior art, effective solution is not yet proposed at present.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of LED display control system, to solve the narrower problem of signal transmission bandwidth of LED display control system in prior art.
To achieve these goals, according to an aspect of the present invention, a kind of LED display control system is provided, be used for controlling LED display and carry out video demonstration, LED display control system according to the present invention comprises: drive plate, be provided with USB interface, described drive plate is used for receiving the first vision signal by described USB interface, and described the first vision signal is converted to the second vision signal; And LED drive circuit, be connected with described LED display with described drive plate, for driving described LED display to show video content corresponding to described the second vision signal.
Further, described USB interface is USB3.0 interface.
Further, described drive plate also comprises: USB3.0 controller, be connected with described USB3.0 interface, for receiving described the first vision signal by described USB3.0 interface, and described the first vision signal be converted to discernible described the second screen signal of field programmable gate array; Described field programmable gate array, is connected with described USB3.0 controller; And drive interface, be connected respectively with described field programmable gate array, wherein, described LED drive circuit is connected with described field programmable gate array by described drive interface.
Further, described drive plate comprises: feed circuit, are connected respectively with described field programmable gate array with described USB3.0 controller, for powering to described USB3.0 controller and described field programmable gate array.
Further, described feed circuit comprise the first power supply and the second power supply, wherein, described the first power supply for described drive plate in the first state in the situation that to described drive plate power supply; And described the second power supply in the situation of described drive plate in the second state to described drive plate power supply, wherein, described the first state and described the second state are different states.
Further, described feed circuit comprise: power management integrated circuit, is connected with described field programmable gate array, for export the adjustable voltage of different magnitudes of voltage to described field programmable gate array.
Further, described drive plate comprises multiple, and wherein, in multiple drive plates, at least one drive plate receives and receives the first vision signal by described USB3.0 interface, between described multiple drive plates, is connected by described USB3.0 interface.
Further, described LED display control system also comprises: computer equipment, for being connected with described drive plate by described USB3.0 interface, for export described the first vision signal to described drive plate; Or memory device, for being connected with described drive plate by described USB3.0 interface, for exporting described vision signal to described drive plate.
Further, described drive plate also comprises: control module, is connected with described field programmable gate array, for sending and control parameter so that described field programmable gate array is controlled to described field programmable gate array; And timer circuit, be connected with described control module.
Further, described USB3.0 interface is multiple, and described drive plate connects external equipment by multiple USB3.0 interfaces.
Further, described LED display control system also comprises: converter, be connected with described drive plate by described USB3.0 interface, for the vision signal of playback equipment output is converted into the discernible vision signal of described USB3.0 interface, wherein, playback equipment is the playback equipment that is not provided with described USB3.0 interface.
By the embodiment of the present invention, adopt LED display control system to comprise: drive plate, be provided with USB interface, described drive plate is used for receiving the first vision signal by described USB interface, and described the first vision signal is converted to the second vision signal; And LED drive circuit, be connected with described LED display with described drive plate, for driving described LED display to show video content corresponding to described the second vision signal, solve the narrower problem of signal transmission bandwidth of LED display control system in prior art, reached the effect that improves the signal transmission bandwidth of LED display control system.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the LED display control system of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram of the preferred LED display control system of the embodiment of the present invention;
Fig. 3 is according to the schematic diagram of the optional LED display control system of the embodiment of the present invention;
Fig. 4 is according to the structured flowchart of the drive plate of the embodiment of the present invention;
Fig. 5 is according to the schematic diagram of the expanding system of embodiment of the present invention drive plate; And
Fig. 6 is according to the circuit diagram of the feed circuit of embodiment of the present invention drive plate.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and needn't be used for describing specific order or precedence.Should be appreciated that the data of such use are suitably exchanging in situation, so that embodiments of the invention described herein.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
The embodiment of the present invention provides a kind of LED display control system, and this LED display control system can be carried out video demonstration for controlling LED display.
Fig. 1 is according to the schematic diagram of the LED display control system of the embodiment of the present invention.As shown in Figure 1, this LED display control system comprises drive plate 10 and LED drive circuit 20.
On drive plate 10, be provided with USB3.0 interface 11, this drive plate 10 is for receiving the first vision signal by usb 11, and the first vision signal is converted to the second vision signal.Usb 11 is for adopting the USB interface of USB standard.LED drive circuit 20 is connected respectively with LED display 30 with drive plate 10, shows for driving LED display screen 30 video content that the second vision signal is corresponding.
The first vision signal can be that computer equipment or memory device are connected with drive plate 10 by usb 11, export the first vision signal to drive plate by the vision signal of computer equipment or memory device output.Wherein, computer equipment or memory device are the equipment with USB interface, by adopting USB standard to communicate, make computer equipment or memory device drive plate 10 can be identified as to display device, directly to drive plate 10 outputting video signals.After LED drive circuit 20 receives the second vision signal, video content corresponding this vision signal is presented in LED display 30.
Preferably, USB interface is USB3.0 interface, adopts the interface of USB3.0 standard.USB3.0 has data transmission capabilities faster, thereby improves further the transfer rate of vision signal, improves system bandwidth.
It should be noted that, in the embodiment of the present invention, adopt USB3.0 interface to communicate and data transmission, in video signal transmission, can also carry out the transmission of control signal.
In embodiments of the present invention, LED display based on USB3.0 communication technology control system is provided, after adopting USB3.0 interface, can be with a year maximum number of points is 375W point (60Hz repetition frequency), can reach the load capacity of 2048x1536@60p (QXGA), be more than 4 times of load capacity of the control system of available technology adopting Ethernet.Avoid the narrower problem of bandwidth of the control system that uses gigabit Ethernet, solved the narrower problem of signal transmission bandwidth of LED display control system, thereby improve system terseness and display effect.
Preferably, drive plate comprises multiple drive plates, and wherein, in multiple drive plates, at least one drive plate receives and receives the first vision signal by USB3.0 interface, between multiple drive plates, is connected by USB3.0 interface.
Because LED display comprises multiple LED lamps, corresponding drive plate is multiple drive plates, in multiple drive plates, at least one drive plate receives the first vision signal, the vision signal of for example computer equipment or memory device output, between multiple drive plates, connect in succession by USB3.0 interface direct, carry out the transmission of data and signal.
As shown in Figures 2 and 3, LED display control system also comprises computer equipment or memory device.Wherein, computer equipment is for being connected with drive plate by USB3.0 interface, for export the first vision signal to drive plate.Memory device is for being connected with drive plate by USB3.0 interface, for to drive plate outputting video signal.
In the time adopting computer equipment to export the first vision signal to drive plate, can realize LED display simultaneous display, by computer equipment displaying video, then by computer equipment, video is encoded, generating video signal, by USB3.0 interface by video signal transmission to drive plate, to send the video content showing on current computer equipment to drive plate, by drive plate, vision signal is changed and is then transferred to LED drive circuit and carries out work with driving LED lamp, realize the video content simultaneous display in LED display on computer equipment.
In the time adopting memory device to export the first vision signal to drive plate, wherein, memory device, stores has video content and the configuration information that will play.Memory device can be plugged on drive plate by USB3.0 interface, drive plate is by the video content that reads configuration information and need to play, thereby be presented in LED display, this content is sent on the drive plate of cascade below simultaneously, by drive plate, vision signal is changed and is then transferred to LED drive circuit and carries out work with driving LED lamp, realize the asynchronous display of LED display.Memory device can be that such as hard disk, USB flash disk etc. are transferred memory device.
As shown in Figure 4, in the embodiment of the present invention, drive plate also comprises USB3.0 controller, field programmable gate array (Field-Programmable Gate Array is called for short FPGA) and drive interface.USB3.0 controller is connected with USB3.0 interface, for receiving the first vision signal by USB3.0 interface, and the first vision signal is converted to discernible the second screen signal of field programmable gate array.Field programmable gate array is connected with USB3.0 controller.Drive interface is connected with field programmable gate array, and wherein, LED drive circuit is connected with field programmable gate array by drive interface.
USB3.0 controller can be USB3.0 control chip, and USB3.0 controller can be multiple USB3.0 controllers, and each USB3.0 controller can be connected with multiple USB3.0 interfaces.Conventionally the signal that USB3.0 controller receives by USB3.0 interface is analog quantity, and USB3.0 controller is for being converted into the discernible digital quantity signal of FPGA by this analog signals.FPGA is responsible for receiving and forward video flowing and control command from USB3.0 controller, storage needs oneself simultaneously video stream data and control command, and pass through drive interface display video to the screen body of LED display.FPGA can pass through USB3.0 interface accessing external unit simultaneously, thereby can carry out expanding system by USB3.0 interface.
Drive plate also comprises control module and timer circuit.Control module is connected with field programmable gate array, for sending and control parameter so that field programmable gate array is controlled to field programmable gate array.This control module can be micro-control unit (MCU).MCU is responsible for protocol analysis, sends running parameter to FPGA simultaneously, controls the duty of FPGA, and the overall power consumption control of drive plate.MCU is connected by universal serial bus or parallel bus with FPGA.Timer circuit is connected with control module, and timer circuit can be watchdog circuit, for preventing that MCU program from running and fly in carrying out, plays the effect of reset, generally manages by the mode of timing dog-feeding.
In the embodiment of the present invention, drive plate also comprises FLASH flash memory and random access memory (RAM), wherein, RAM can be static RAM (Static RAM, be called for short SRAM), FLASH flash memory is connected with MCU, and RAM is connected with FPGA.Wherein, FLASH flash memory can be for the running parameter of storage control system, and RAM can be for the data stream of buffer memory vision signal.
Preferably, USB3.0 interface is multiple USB3.0 interfaces, and drive plate connects external equipment by multiple USB3.0 interfaces, and this external equipment can comprise door status switch, temperature alarm and sensor.By multiple USB3.0 interfaces are set, so that LED display control system is expanded.Certainly, also can connect external expanding system by described multiple USB3.0 interfaces, as shown in Figure 4, external expanding system is connected with drive plate by USB3.0 interface, gathers or external control signal expansion by USB3.0 Interface realization external analog amount.
The structured flowchart of expanding system as shown in Figure 5, the MCU of expanding system is by adopting USB power supply, the 5V500mA power supply providing by USB interface, MCU by expanding system sends digital controlled signal to such as hummer, alarm lamp, door status switch, temperature sensor etc., and work state information is sent to status display circuit shows.The digital quantity (as cigarette sense, relay status etc.) that expansion board can gather and analog input (as light sensation etc.), then feed back on drive plate by USB3.0 interface.Simultaneously drive plate can send order to the MCU of expanding system by USB3.0 interface, and the MCU of expanding system resolves order receiving after order, is converted into the demonstration of digital output and related content.
Drive plate also comprises feed circuit, and these feed circuit are connected respectively with field programmable gate array with USB3.0 controller.Feed circuit are for powering to the each components and parts of drive plate.Feed circuit can adopt the integrated control program of PMU (power management integrated circuit), can control flexibly current control circuit power supply status by MCU, can accomplish in actual applications the function of economize on electricity, in the time of standby electricity-saving mode work, only have kernel at work external logic interface circuit in off-position, when needing use, can not need to re-power the time of startup, only need to power on to outer logic circuit, can recover normal operating conditions, ensure the quick response of system.
The feed circuit of the embodiment of the present invention comprise the first power supply and the second power supply, and wherein, drive plate, in the first state, is powered to drive plate by the first power supply; And drive plate is in the second state, powers to drive plate by the second power supply, wherein, the first state and the second state are different states.The residing state of drive plate when the first state can be the standby of LED display blank screen, the residing state of drive plate when the second state can be the work of LED display bright screen.By adopting two power supplys, respectively to the drive plate power supply under different conditions, thus can be according to selection of power of the power consumption situation under different conditions, the raising dirigibility of powering, reaches energy-conservation effect.
Alternatively, the embodiment of the present invention can adopt the power supply of dual output to power, and controls the electric energy output of power supply under different conditions, reaches energy-conservation effect.
Particularly, as shown in Figure 6, feed circuit comprise power supply A and power supply B, and power supply A is connected respectively at MCU with power supply B, the MCU that this MCU is drive plate.MCU can be for detection of the voltage of power supply A and power supply B, output alarm prompting in the time that supply voltage is too low.In the process of LED display work, sometimes can be in the state of blank screen, can be called holding state, under this state, although screen is displaying contents not, but the circuit of actual drive part is work, there will be the situation that power consumption is higher, the feed circuit shown in Fig. 6 can be realized the function of screen body standby and fast quick-recovery.Power supply A and power supply B are dual output power supply, one tunnel is the drive plate power supply under holding state, one tunnel is that lamp plate drives power supply, power supply A and the output of power supply B two-way are all connected on diode power source separator, wherein, lamp plate drives the diode power source isolation of power supply to be connected with MCU by voltage comparator, and standby power supply output terminal can adopt 3.3V power voltage supply.The power supply of standby power supply output terminal is normal power supply, and lamp plate driving circuit is to export by switch, can play by the power supply of control module MCU shutoff lamp plate driving power the effect of economize on electricity in needing standby.
Meanwhile, because power supply A is connected with MCU by bus with power supply B, control module MCU can obtain by bus the status information such as output state, temperature of power supply.
Preferably, feed circuit comprise: power management integrated circuit (Power Management IC is called for short PMIC), is connected with field programmable gate array, for export the adjustable voltage of different magnitudes of voltage to field programmable gate array.PMIC is also connected by universal serial bus with MCU.As shown in Figure 6, PMIC provides respectively 3.3V standby voltage to FPGA, the DDR storer supply voltage of 1.8V, the fpga core supply voltage of 1.2V, and 3.3V adjustable voltage.Wherein, MCU is to each road output voltage Real-time Collection and monitoring, so that understand in real time the state of operating voltage.
MCU can control PMIC and export different adjustable voltage, can detect output voltage simultaneously, has accomplished like this state-detection of real-time working voltage, can play by the operating voltage of fine setting FPGA the effect of energy-conservation and improving performance.
Preferably, LED display control system also comprises converter, this converter is connected with drive plate by USB3.0 interface, for the vision signal of playback equipment output is converted into the discernible vision signal of USB3.0 interface, wherein, playback equipment is the playback equipment that is not provided with USB3.0 interface.
For the playback equipment that is not provided with USB3.0 interface, can be connected with the USB3.0 interface of drive plate by converter, encoding video signal by converter to playback equipment and decoding, to export discernible vision signal to drive plate, thereby the video content of realizing in the playback equipment that is not provided with USB3.0 interface shows in LED display.
To sum up, the embodiment of the present invention has reached following effect:
Use USB3.0 to carry out the transmission of vision signal and control signal, improve greatly the bandwidth of LED display control system, simplify the workload of lamp plate scanning simultaneously, on the gray scale that can correction data, GAMMA, brilliance control etc. be all added at screen source input end is processed, by the complexity of the logical circuit of few rear-end scanning lamp plate.For example, by improving the even gray scale processing power of 16bit of 12bit, single point correction is added in gray scale processing, the complexity that reduces the logical circuit of rear-end scanning lamp plate, realizes the gray scale processing that real 10bit, 12bit are even higher, guarantees real reduction video effect.
Compared with the LED display control system of transmitting with available technology adopting Ethernet, because the system that adopts Ethernet transmission comprises that master control borad comprises again drive plate, master control borad is responsible for resolving vision signal, to be converted into the packet of Ethernet.And the situation of employing USB3.0, and use and drive plate can be identified as to display device with computer equipment or the memory device of USB3.0, directly, to drive plate outputting video signal, no longer need master control borad bridge joint, thereby simplified LED display control system.
Compatible by LED display synchronous and asynchronous is shown, and multiple USB3.0 interfaces the expansion realizing control system is set, the extended capability of LED display control system is improved greatly, facilitate system upgrade.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a LED display control system, is characterized in that, carries out video demonstration for controlling LED display, comprising:
Drive plate, is provided with USB interface, and described drive plate is used for receiving the first vision signal by described USB interface, and described the first vision signal is converted to the second vision signal; And
LED drive circuit, is connected with described LED display with described drive plate, for driving described LED display to show video content corresponding to described the second vision signal.
2. LED display control system according to claim 1, is characterized in that, described USB interface is USB3.0 interface.
3. LED display control system according to claim 2, is characterized in that, described drive plate comprises:
USB3.0 controller, is connected with described USB3.0 interface, for receiving described the first vision signal by described USB3.0 interface, and described the first vision signal is converted to discernible described the second screen signal of field programmable gate array;
Described field programmable gate array, is connected with described USB3.0 controller; And
Drive interface, is connected respectively with described field programmable gate array, and wherein, described LED drive circuit is connected with described field programmable gate array by described drive interface.
4. LED display control system according to claim 3, is characterized in that, described drive plate also comprises:
Control module, is connected with described field programmable gate array, for sending and control parameter so that described field programmable gate array is controlled to described field programmable gate array; And
Timer circuit, is connected with described control module.
5. LED display control system according to claim 3, is characterized in that, described drive plate also comprises:
Feed circuit, are connected respectively with described field programmable gate array with described USB3.0 controller, are used to described USB3.0 controller and the power supply of described field programmable gate array.
6. LED display control system according to claim 5, is characterized in that, described feed circuit comprise:
The first power supply and the second power supply, wherein,
Described the first power supply for described drive plate in the first state in the situation that to described drive plate power supply; And
Described the second power supply in the situation of described drive plate in the second state to described drive plate power supply, wherein, described the first state and described the second state are different states.
7. according to the LED display control system described in claim 5 or 6, it is characterized in that, described feed circuit comprise:
Power management integrated circuit, is connected with described field programmable gate array, for export the adjustable voltage of different magnitudes of voltage to described field programmable gate array.
8. LED display control system according to claim 2, it is characterized in that, described drive plate is multiple, wherein, in multiple drive plates, at least one drive plate receives and receives the first vision signal by described USB3.0 interface, between described multiple drive plates, is connected by described USB3.0 interface.
9. LED display control system according to claim 2, is characterized in that, described LED display control system also comprises:
Computer equipment, for being connected with described drive plate by described USB3.0 interface, for export described the first vision signal to described drive plate; Or
Memory device, for being connected with described drive plate by described USB3.0 interface, for exporting described vision signal to described drive plate.
10. LED display control system according to claim 2, is characterized in that, described USB3.0 interface is multiple, and described drive plate connects external equipment by multiple USB3.0 interfaces.
11. LED display control system according to claim 2, is characterized in that, described LED display control system also comprises:
Converter, be connected with described drive plate by described USB3.0 interface, for the vision signal of playback equipment output is converted into the discernible vision signal of described USB3.0 interface, wherein, described playback equipment is the playback equipment that is not provided with described USB3.0 interface.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601924A (en) * | 2015-01-21 | 2015-05-06 | 深圳市载德光电技术开发有限公司 | FPGA (Field Programmable Gate Array) based video image compensating method and device |
| CN107578745A (en) * | 2016-07-04 | 2018-01-12 | 上海和辉光电有限公司 | FPGA device and the AMOLED display circuits using the device |
| CN111862898A (en) * | 2020-07-15 | 2020-10-30 | 宁波视睿迪光电有限公司 | Mirror display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909032A (en) * | 2006-08-18 | 2007-02-07 | 浙江亿源光电科技有限公司 | LED display screen control system |
| US20090146917A1 (en) * | 2007-12-11 | 2009-06-11 | Hamid Kharrati | Enumeration system and method for a led display |
| US20090231247A1 (en) * | 2008-03-11 | 2009-09-17 | Tushar Dhayagude | Methods and circuits for self-calibrating controller |
| CN202502716U (en) * | 2012-01-12 | 2012-10-24 | 上海灵信信息科技有限公司 | LED display screen asynchronous controller based on USB memory interface |
| CN202549253U (en) * | 2012-03-28 | 2012-11-21 | 湘潭忆光光电科技有限公司 | LED display screen control system |
| CN202795987U (en) * | 2012-08-10 | 2013-03-13 | 深圳市易事达电子股份有限公司 | Intelligent led display screen |
| CN203406038U (en) * | 2013-09-02 | 2014-01-22 | 西安诺瓦电子科技有限公司 | Asynchronous control card and led display screen system |
| CN203870948U (en) * | 2014-05-20 | 2014-10-08 | 利亚德光电股份有限公司 | Led display screen control system |
-
2014
- 2014-05-20 CN CN201410214066.0A patent/CN103971641A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909032A (en) * | 2006-08-18 | 2007-02-07 | 浙江亿源光电科技有限公司 | LED display screen control system |
| US20090146917A1 (en) * | 2007-12-11 | 2009-06-11 | Hamid Kharrati | Enumeration system and method for a led display |
| US20090231247A1 (en) * | 2008-03-11 | 2009-09-17 | Tushar Dhayagude | Methods and circuits for self-calibrating controller |
| CN202502716U (en) * | 2012-01-12 | 2012-10-24 | 上海灵信信息科技有限公司 | LED display screen asynchronous controller based on USB memory interface |
| CN202549253U (en) * | 2012-03-28 | 2012-11-21 | 湘潭忆光光电科技有限公司 | LED display screen control system |
| CN202795987U (en) * | 2012-08-10 | 2013-03-13 | 深圳市易事达电子股份有限公司 | Intelligent led display screen |
| CN203406038U (en) * | 2013-09-02 | 2014-01-22 | 西安诺瓦电子科技有限公司 | Asynchronous control card and led display screen system |
| CN203870948U (en) * | 2014-05-20 | 2014-10-08 | 利亚德光电股份有限公司 | Led display screen control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601924A (en) * | 2015-01-21 | 2015-05-06 | 深圳市载德光电技术开发有限公司 | FPGA (Field Programmable Gate Array) based video image compensating method and device |
| CN107578745A (en) * | 2016-07-04 | 2018-01-12 | 上海和辉光电有限公司 | FPGA device and the AMOLED display circuits using the device |
| CN111862898A (en) * | 2020-07-15 | 2020-10-30 | 宁波视睿迪光电有限公司 | Mirror display device |
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Application publication date: 20140806 |