CN103500553B - LED (Light Emitting Diode) display screen system - Google Patents
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Abstract
The invention relates to an LED (Light Emitting Diode) display screen system, which comprises a control card of an LED display screen, an LED lamp panel string and a tail-end terminating module, wherein the LED lamp panel string comprises an LED lamp panel, and is electrically connected to the control card of the LED display screen, or a plurality of LED lamp panels are connected to the control card of the LED display screen in parallel so as to receive data and a control signal, which are output by the control card of the LED display screen; the tail-end terminating module is electrically connected to the last primary LED lamp panel in the LED lamp panel string, so that a return data signal output by the last primary LED lamp panel is transmitted to the control card of the LED display screen through the tail-end terminating module and the LED lamp panel string in sequence. According to the invention, a data return path section is formed on the LED lamp panel, so that fault detection of each LED lamp panel of the LED display screen can be completed without additionally providing a monitor wafer building loop, thus wiring is simplified, and the LED display screen system has lower cost.
Description
Technical field
The present invention relates to display technique field, particularly a kind of LED display screen system.
Background technology
LED (Light emitting diode, light emitting diode) display screen system, as novel display technique, is accepted by market gradually with its energy-saving and environmental protection, the advantage such as highlighted, thus is widely used in the fields such as city medium, urban transportation.
Wherein, field of traffic LED display screen system generally can be used for showing the information such as road name, traffic, speed limit, each LED in LED display likely breaks down, when LED number of faults and position acquire a certain degree, the display of information can be affected, can mistake in communication information time serious.Therefore, the fault detect how making field of traffic LED display screen system can carry out LED is in time one of current problem demanding prompt solution.
The loop that the LED fault detect of existing a kind of LED display screen system needs receiving card, LED lamp panel and monitor board to be formed realizes, specifically can REFERENCE TO RELATED people the application number that on June 25th, 2012 applies for be CN201210210656.7, denomination of invention is the application for a patent for invention of " a kind of LED display condition checkout gear and detection method ".Receiving card output data and control signal are to LED lamp panel, LED lamp panel has input port and delivery outlet, data-signal is delivered to follow-up LED lamp panel, the delivery outlet of most end one-level LED lamp panel is connected to monitor board, monitor board receives and is sent to receiving card after process data signal, and receiving card can obtain the LED failure condition of LED display by analyzing the data received.
But prior art has the following disadvantages: the casing connection wire at (1) LED lamp panel place is too much, more complicated; (2) need additional configuration monitor board, cost is higher.Therefore, the simple and lower-cost LED fault detection approach of a kind of line is necessary to propose.
Summary of the invention
Therefore, the invention provides a kind of LED display screen system, it can realize the simple and lower-cost LED fault detect of line.
Particularly, a kind of LED display screen system that the embodiment of the present invention provides, it comprises: LED display control card, LED lamp panel string and end termination module.Wherein, LED lamp panel string comprises a LED lamp panel and is electrically connected to LED display control card or multiple LED lamp panel and is cascaded to LED display control card, to receive the data and control signal that LED display control card exports.Most end one-level LED lamp panel in end termination module electrical connection LED lamp panel string, is sequentially sent to described LED display control card via described end termination module and described LED lamp panel string to make the return data signal exported by most end one-level LED lamp panel.
In addition, a kind of LED display screen system that another embodiment of the present invention provides, it comprises: LED display control card, data genaration path, end termination module and data back path.Wherein, data genaration path electrical connection LED display control card also accepts the control of LED display control card and produces return data, and data genaration path comprises the data generation pass section be formed in a LED lamp panel or the multiple data genaration route segments be serially connected be respectively formed in the LED lamp panel of multiple cascade.Data back path electrical connection LED display control card is also electrically connected to data transmitter generation pass by end termination module, so that return data is sent to LED display control card, data back path comprises the data return path section be formed in an above-mentioned LED lamp panel or the multiple data back route segments be serially connected be respectively formed in the LED lamp panel of above-mentioned multiple cascade.
The present invention, by forming data back route segment in LED lamp panel, therefore building without the need to additionally arranging monitor board the fault detect that loop can complete each LED lamp panel to LED display, so then can simplify line, and having lower cost.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the configuration diagram of a kind of LED display screen system of the embodiment of the present invention.
Fig. 2 is a kind of circuit block diagram of the control card of LED display shown in Fig. 1.
Fig. 3 is a kind of circuit block diagram of each LED lamp panel shown in Fig. 1.
Fig. 4 is a kind of circuit block diagram of the termination module of end shown in Fig. 1.
Fig. 5 is the circuit block diagram of the another kind of embodiment of most end one-level LED lamp panel in the string of LED lamp panel shown in Fig. 1.
Fig. 6 is the configuration diagram of the LED display screen system of another embodiment of the present invention.
Another angle configuration diagram that Fig. 7 is LED display screen system shown in Fig. 1.
Fig. 8 is the configuration diagram of the LED display screen system of yet another embodiment of the invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the configuration diagram of a kind of LED display screen system of the embodiment of the present invention.As shown in Figure 1, LED display screen system 10 comprises LED display control card 11, multiple LED lamp panel string 13 and multiple end termination module 17.Wherein, single led lamp plate string 13 such as comprises two LED lamp panel 15a, 15b and is cascaded to LED display control card 11, and each LED lamp panel string 13 configures an end termination module 17.It should be noted that, LED lamp panel 15a, 15b can have identical circuit structure, and the difference of label is mainly used for representing that it is in different positions in LED lamp panel string 13; In addition, the quantity of LED lamp panel string 13 is not limited to two shown in Fig. 1, need depending on the size of actual LED display of building; LED lamp panel 15a in single led lamp plate string 13, the quantity of 15b are also not limited to two shown in Fig. 1, can be also one, such as, be only LED lamp panel 15b, or two or more, such as, comprise multiple LED lamp panel 15a and LED lamp panel 15b; In addition, end termination module 17 can be the circuit module independent of LED lamp panel 15b, may also be to be formed directly on most end one-level LED lamp panel 15b.It should be noted that, for the situation of the LED lamp panel string be only made up of a LED lamp panel, then most end one-level LED lamp panel and first order LED lamp panel are then same lamp plate.
Please also refer to Fig. 1 and Fig. 2, Fig. 2 a kind of circuit block diagram for the control card of LED display shown in Fig. 1 11.In fig. 2, LED display control card 11 mainly comprises governor circuit 110, output circuit 112, data feedback circuit 114 and constrained input interface 113; Certain LED display control card 11 can also comprise the auxiliary circuit such as volatile memory and/or nonvolatile memory of some necessity, does not repeat them here.In addition, LED display control card 11 is such as a point two-tier circuit plate design, and governor circuit 110 is arranged on bottom circuit board, and output circuit 112, data feedback circuit 114 and constrained input interface 113 are arranged on layer circuit board; At this, upper layer circuit board is mainly used as the use of Interface Expanding, and it can be fixed on bottom circuit board by row's pin/row mother cooperation.
Hold above-mentioned, governor circuit 110 such as comprises programming device, picture FPGA (FieldProgrammable Gate Array, field programmable gate array), CPLD (ComplexProgrammable Logic Device, CPLD) etc. device, it can carry out data conversion and gray-scale Control to provide display data and control signal to output circuit 112, then is sent to each LED lamp panel 15a, 15b by output circuit 112 by constrained input interface 113; Herein, the display data that receive of LED lamp panel 15b and control signal are then passed on by the previous stage LED lamp panel 15a with its cascade.Be understandable that, the programming device in governor circuit 110 is the embedded microprocessor such as replaceable one-tenth ARM, MCU (Microcontroller Unit) also; Or, governor circuit 110 comprises programming device and embeds the combination of the process that declines, like this then embedded microprocessor can be responsible for displaying contents to carry out resolving being formed displays content data and the control signal such as clock, synchronizing signal for programming device, and programming device is responsible for data conversion and gray-scale Control to provide display data and control signal to LED lamp panel 15a, 15b.Output circuit 112 is connected electrically between governor circuit 110 and constrained input interface 113, and it such as exports the data such as display data-signal, enable signal, data latch signal, shift clock such as R (red), G (green), B (indigo plant) and controls signal to constrained input interface 113.Data feedback circuit 114 is connected electrically between governor circuit 110 and constrained input interface 113, its receive and transmit from constrained input interface 113 input return data to governor circuit 110.At this, data feedback circuit 114 is such as driving chip chips such as () such as 74HC245 or discrete component circuit that strengthen for signal, or is connecting line.In addition, can be learnt by the description of above-mentioned LED display control card 11: constrained input interface 113 can be distinguished and export data-interface, control signal interface and return data interface three parts, wherein, the input port of data-interface as the delivery outlet of the display data-signals such as R, G, B, the return data interface representatively return data signal of the spot check result of R, G, B three-color LED is exported.Be understandable that, data-signal be R, G, B tri-the situation of look display data-signal be correspond on LED lamp panel 15a, 15b to be provided with R, G, B three-color LED, but the present invention is not as limit, LED lamp panel 15a, 15b also can only arrange R, G dual-colored LED, or can also be provided with four look LED, or be that only monochromatic LED is set.
Fig. 3 is a kind of circuit block diagram of LED lamp panel 15a shown in Fig. 1 (15b).In figure 3, LED lamp panel 15a (15b), except comprising multiple LED (not drawing in Fig. 3), also comprises: constrained input interface J1, LED drive circuit 151, constrained input interface J3 and data feedback circuit 153.Wherein, LED drive circuit 151 is electrically connected between constrained input interface J1 and constrained input interface J3, whether it lights for the multiple LED come drived control LED lamp panel 15a (15b) according to the control signal inputted from constrained input interface J1 and one's own display data-signal, and not one's own display data-signal then transfers to the next stage LED lamp panel with its cascade by constrained input interface J3.In the present embodiment, LED drive circuit 151 supports fault detect pattern, and such as LED failpoint detects, and thus it is such as comprise the LED drive chip supporting spot check, as LED drive chip such as MBI5036, MBI5034, MBI5040, DM13H, MBI5030.At this, when the multiple LEDs of the enable LED drive circuit of LED display control card 11 151 to its drived control carry out fault detect, also when namely LED drive circuit 151 is operated in fault detect pattern, the display data for fault detect that LED drive circuit 151 receives to be provided from LED display control card 11 carry out each LED that its band of drived control carries, and export the return data representing the failpoint testing result of each LED; Whether the follow-up LED display control card 11 that will be sent to of this return data exists LED bad point for analyzing this LED lamp panel 15a (15b) and locates the position of LED bad point.
Hold above-mentioned, data feedback circuit 153 is electrically connected between constrained input interface J1 and constrained input interface J3, for the return data inputted from constrained input interface J3 is sent to constrained input interface J1.At this, data feedback circuit 153 is such as driving chip chips such as () such as 74HC245 or discrete component circuit that strengthen for signal, or is connecting line.In addition, from the above-mentioned description to LED lamp panel 15a (15b), constrained input interface J1 can distinguish input data-interface, control signal interface and return data interface three parts, and constrained input interface J3 can distinguish and export data-interface, control signal interface and return data interface three parts; Further, the output data-interface composition data generation pass section of the input data-interface of constrained input interface J1, LED drive circuit 151 and constrained input interface J3; The return data interface composition data return path section of the return data interface of constrained input interface J3, data feedback circuit 153 and constrained input interface J1; Thus data genaration route segment accepts the control of LED display control card 11 and can produce and export the return data of the failure detection result representing LED lamp panel 15a (15b) each LED upper, this return data is follow-up can be sent to LED display control card 11 via data back route segment and judge whether this LED lamp panel 15a (15b) exists LED bad point and locate the position of LED bad point for analyzing.
Fig. 4 is a kind of circuit block diagram of the end termination circuit 17 shown in Fig. 1.In the diagram, end termination circuit 17 comprises constrained input interface 170 and data feedback circuit 172.Wherein, data feedback circuit 172 is electrically connected constrained input interface 170, and it receives the return data from the spot check result of the LED in each LED pixel each LED lamp panel 15a of representative, the 15b of constrained input interface 170 input and the return data received is resent to constrained input interface 170 as output; Therefore, constrained input interface 170 can be distinguished input data-interface and export data-interface.Data feedback circuit 172 is such as driving chip chips such as () such as 74HC245 or discrete component circuit that strengthen for signal, or is connecting line.
Composition graphs 1, Fig. 2, Fig. 3 and Fig. 4 are known, the constrained input interface J1 of LED lamp panel 15a can be connected to the constrained input interface 113 of LED display control card 11 by winding displacement, the constrained input interface J1 of LED lamp panel 15b then can be connected to the constrained input interface J3 of LED lamp panel 15a by winding displacement, and the constrained input interface 170 of end termination module 17 is connected to the constrained input interface J3 of LED lamp panel 15b by winding displacement or is snapped together with the constrained input interface J3 of LED lamp panel 15b by row's pin/row mother cooperation.
Please also refer to Fig. 7 and Fig. 1 and Fig. 2, from another angle, shown in Fig. 1 by two LED lamp panel 15a, the single led lamp plate string 13 that 15b is formed, LED lamp panel 15a, data genaration route segment on 15b is serially connected formation data generation pass, data back data segment on it is serially connected formation data return path, this data genaration path and data back path are connected with the constrained input interface 113 of LED display control card 11 respectively, and linked together by end termination module 17, so that each LED lamp panel 15a of representative that data genaration path produces, the return data of the failure detection result of 15b each LED upper sequentially can be sent to LED display control card 11 by end termination module 17 and data back path and judge LED lamp panel 15a for analysis, whether 15b exists the position of LED bad point and location LED bad point.
It is worth mentioning that, be relevant in the embodiment shown in Fig. 3 and Fig. 4, end termination module 17 arranges independent of LED lamp panel 15a (15b), but it also can be formed directly on most end one-level LED lamp panel such as 15b, the circuit block diagram of such as, LED lamp panel 15b shown in Fig. 5.Particularly, the LED lamp panel 15b part that the LED lamp panel 15b in Fig. 5 is different from Fig. 3 is: do not arrange constrained input interface J3, but be provided with end termination module 17.So, then the LED lamp panel 15b in Fig. 5 and incomplete same with the circuit structure of the prime LED lamp panel 15a of its cascade.More specifically, in Figure 5, LED lamp panel 15b comprises constrained input interface J1, LED drive circuit 151, data feedback circuit 153 and end termination module 17.Wherein, LED drive circuit 151 is electrically connected between constrained input interface J1 and end termination module 17, and whether it lights for each LED come according to the control signal inputted from constrained input interface J1 and one's own display data in the multiple LED pixels drived control LED lamp panel 15b.LED drive circuit 151 supports fault detect pattern, when the enable LED drive circuit 151 of LED display control card 11 carries out fault detect to each LED in the LED pixel of its drived control, the display data for fault detect that LED drive circuit 151 receives to be provided from LED display control card 11 carry out each LED of drived control, and the exportable return data representing the testing result of each LED is to end termination module 17, then transfer to data feedback circuit 153 by end termination module 17; By data feedback circuit 153, return data is sent to LED display control card 11 by constrained input interface J1 and judges whether LED lamp panel 15b exists the position of LED bad point and location LED bad point for carrying out analyzing.In addition, for end termination module 17, it without the need to arranging constrained input interface 170 as shown in Figure 4, and directly can be connected with data feedback circuit 153 with LED drive circuit 151 by data feedback circuit 172 respectively; At this, data feedback circuit 172 can be driving chip chips such as () such as 74HC245 or discrete component circuit that strengthen for signal, or is connecting line.
It is worth mentioning that, the above embodiment of the present invention detects (also claiming spot check) citing as fault detect using the failpoint of LED lamp panel, right the present invention is not limited to failpoint and detects, winding displacement can also be applied to detect, the fault detects such as driving chip failure detection, example is detected as with winding displacement, when LED display control card 11 controls LED lamp panel 15a, when 15b carries out winding displacement detection, LED display control card 11 sends and is used for fault detect data to LED lamp panel 15a, 15b, LED display control card 11 receives by LED lamp panel 15a afterwards, after the testing result data that data feedback circuit 153 on 15b returns, the fault detect data of the testing result data received and transmission are compared, if both are identical, then represent that winding displacement is normal, if not identical, then represent winding displacement abnormal and need maintenance.In addition, driving chip failure detection is roughly the same with the process that winding displacement detects, therefore does not repeat them here.
In addition, in other embodiments, as shown in Figure 6, the LED display screen system 10' of the embodiment of the present invention can comprise multiple LED display control card, two LED display control cards 11a, 11b are only shown as an example in Fig. 6, and LED display control card 11a, 11b can have the Circnit Layout substantially identical with the control card of LED display shown in Fig. 2 11.These LED display control cards 11a, 11b are respectively arranged with communication interface, such as gigabit network interface, these LED display control cards 11a, 11b are linked togather by communication interface level, so that display data needed for rear stage LED display control card 11b and control signal are then by coming in previous stage LED display control card 11a.In the present embodiment, communication interface can receive the displays content data and the control signal such as clock, synchronizing signal that provide from front controller 20, and the return data that each LED lamp panel string 13 that affiliated LED display control card 11a, 11b band carries provides is sent to front controller 20 after treatment.At this, the displays content data that front controller 20 provides such as is used to drive the LED display display text be spliced by each LED lamp panel string 13, picture, clock etc.In addition, each LED display control card 11a, 11b in LED display screen system 10' shown in Fig. 6 are not limited to have identical Circnit Layout, also can have different Circnit Layouts, such as, shown in Fig. 8.
Particularly, in fig. 8, LED display screen system 10 " comprise LED display control card 11c and LED display control card 11b and LED display control card 11c, 11b with carry multiple LED lamp panel strings 13.Wherein, the Circnit Layout of LED display control card 11c is different from LED display control card 11b, and it is integrated with the function of the front controller 20 shown in Fig. 6 and LED display control card 11a.Like this, LED display control card 11c is equivalent to a kind of asynchronous control-card, it can to the control signal of being resolved rear generation displays content data and necessity from host computer 30 by the displaying contents that its network interface, serial ports or USB port import, carry out again afterwards data conversion and gray-scale Control with output display data and control signal come drived control with year LED lamp panel string 13.In addition, LED display control card 11c both directly can also be with and carry LED lamp panel string 13, can be with other LED lamp panel strings 13 carrying LED display again by cascade one or more LED display control card 11b.
In sum, the embodiment of the present invention by forming data back route segment in LED lamp panel, therefore building without the need to additionally arranging monitor board the fault detect that loop can complete each LED lamp panel to LED display, so then can simplify line, and there is lower cost.In addition, the LED display screen system of the embodiment of the present invention can be applied to field of traffic, but the present invention is not as limit.
Apply specific case herein to set forth the principle of LED display screen system of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a LED display screen system, is characterized in that, comprising:
LED display control card;
LED lamp panel string, comprise multiple LED lamp panel and be cascaded to described LED display control card, to receive the data and control signal that described LED display control card exports, wherein said multiple LED lamp panel comprises the second LED lamp panel as most end one-level LED lamp panel and the first LED lamp panel as the prime of described second LED lamp panel and described first LED lamp panel is connected electrically between described LED display control card and described second LED lamp panel; And
End termination module, be electrically connected described second LED lamp panel as most end one-level LED lamp panel, described in the representative produced to make described second LED lamp panel, the return data signal of the testing result of the second LED lamp panel is sequentially sent to described LED display control card by described end termination module and described LED lamp panel string, and the return data signal of testing result of the first LED lamp panel described in the representative that produces of described first LED lamp panel first transmits rearward to described second LED lamp panel and is sequentially sent to described LED display control card by described end termination module and described LED lamp panel string again.
2. LED display screen system as claimed in claim 1, it is characterized in that, the quantity of described LED display control card is multiple, and described multiple LED display control card links together in cascaded fashion, and each LED display control cassette tape is loaded onto a few described LED lamp panel string.
3. LED display screen system as claimed in claim 1, it is characterized in that, the quantity of described LED display control card is multiple and comprises the first LED display control card and the second LED display control card being electrically connected to described first LED display control card, described first LED display control card is directly with and is carried LED lamp panel string described at least one, and can be loaded onto a few described LED lamp panel string by described second LED display control cassette tape simultaneously.
4. LED display screen system as claimed in claim 1, it is characterized in that, described LED display control card comprises governor circuit, output circuit, data feedback circuit and constrained input interface, described output circuit to be connected electrically between described governor circuit and constrained input interface and for exporting described data and control signal, and described data feedback circuit to be connected electrically between described governor circuit and constrained input interface and for receiving described return data signal.
5. LED display screen system as claimed in claim 1, it is characterized in that, each described LED lamp panel is provided with multiple LED and supports the LED drive circuit of fault detect for LED multiple described in drived control, described LED drive circuit produces described return data signal under being adapted to operate in fault detect pattern.
6. LED display screen system as claimed in claim 1, is characterized in that, described end termination module independent of described most end one-level LED lamp panel, and is formed with described most end one-level LED lamp panel and is electrically connected.
7. LED display screen system as claimed in claim 1, it is characterized in that, described end termination module is directly formed in described most end one-level LED lamp panel.
8. a LED display screen system, is characterized in that, comprising:
LED display control card;
Data genaration path, be electrically connected described LED display control card and accept the control of described LED display control card and produce the return data of the testing result of the LED lamp panel representing multiple cascade respectively, described data genaration path comprise be respectively formed at described multiple cascade LED lamp panel on multiple data genaration route segments be serially connected;
Data back path, is electrically connected described LED display control card, described data back path comprise be respectively formed at described multiple cascade LED lamp panel on multiple data back route segments be serially connected; And
End termination module, be connected between described data genaration path and described data back path, the return data representing the testing result of the LED lamp panel of described multiple cascade respectively produced to make described data genaration path is all sequentially sent to described LED display control card by described same end termination module and described data back path.
9. LED display screen system as claimed in claim 8, it is characterized in that, described LED display control card comprises governor circuit, output circuit, data feedback circuit and constrained input interface, described output circuit is electrically connected described governor circuit and is connected with described data genaration path by described constrained input interface, and described data feedback circuit is connected electrically in described governor circuit and is connected with described data back path by described constrained input interface.
10. LED display screen system as claimed in claim 8, it is characterized in that, each described LED lamp panel is provided with multiple LED, and be formed in and the data genaration route segment in described LED lamp panel be provided with for LED multiple described in drived control and support the LED drive circuit of fault detect, described LED drive circuit produces described return data under being adapted to operate in fault detect pattern, and is formed in the data feedback circuit data back route segment in described LED lamp panel is provided with for transmitting described return data.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446064.XA CN103500553B (en) | 2013-09-26 | 2013-09-26 | LED (Light Emitting Diode) display screen system |
| US14/414,881 US9953552B2 (en) | 2013-09-26 | 2014-03-10 | LED display unit board, LED display screen control card and LED display screen system |
| EP14802801.2A EP2879125A4 (en) | 2013-09-26 | 2014-03-10 | Led lamp panel, control card of led display screen, and led display screen system |
| PCT/CN2014/073102 WO2015043139A1 (en) | 2013-09-26 | 2014-03-10 | Led lamp panel, control card of led display screen, and led display screen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310446064.XA CN103500553B (en) | 2013-09-26 | 2013-09-26 | LED (Light Emitting Diode) display screen system |
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| CN103500553A CN103500553A (en) | 2014-01-08 |
| CN103500553B true CN103500553B (en) | 2015-07-15 |
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| US9953552B2 (en) * | 2013-09-26 | 2018-04-24 | Xi'an Novastar Tech Co., Ltd. | LED display unit board, LED display screen control card and LED display screen system |
| CN104267719B (en) * | 2014-10-20 | 2016-11-30 | 上海光联照明有限公司 | Bus LED display system pointwise method for detecting fault and application thereof |
| CN106020761B (en) * | 2016-07-06 | 2023-07-04 | 上海熙讯电子科技有限公司 | LED lamp pole screen picture synchronization system |
| CN106448545B (en) * | 2016-10-14 | 2023-09-05 | 深圳雷美瑞智能控制有限公司 | LED display screen control system and receiving card and monitoring board thereof |
| CN106448550B (en) * | 2016-12-27 | 2020-01-10 | 福州海天微电子科技有限公司 | Automatic identification method and device for LED screen parameters |
| CN112331133A (en) * | 2020-08-24 | 2021-02-05 | 浙江宇视科技有限公司 | Display control method, device, medium and system of LED screen |
| CN113096591B (en) * | 2021-06-08 | 2021-08-27 | 成都成电光信科技股份有限公司 | LED display video transmission method |
| CN113795066B (en) * | 2021-11-17 | 2022-02-11 | 深圳市明微电子股份有限公司 | LED driving data transmission method and LED driving circuit |
| CN117373377B (en) * | 2023-12-06 | 2024-02-09 | 深圳市绿源半导体技术有限公司 | Signal transmission system and signal transmission control method thereof |
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| CN100576293C (en) * | 2007-04-09 | 2009-12-30 | 北京巨数数字技术开发有限公司 | Light-emitting Component Actuating Device And Assembly and status transferring method |
| CN101466188A (en) * | 2009-01-12 | 2009-06-24 | 北京巨数数字技术开发有限公司 | Control device, system and method for automatically reporting fault |
| CN102708772B (en) * | 2012-06-25 | 2015-08-05 | 西安诺瓦电子科技有限公司 | A kind of LED display condition detection method |
| CN203134316U (en) * | 2012-12-05 | 2013-08-14 | 深圳市奥拓电子股份有限公司 | LED full color screen system and detection circuit thereof |
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