CN106448545A - LED display screen control system, receiving card and monitoring board - Google Patents
LED display screen control system, receiving card and monitoring board Download PDFInfo
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- CN106448545A CN106448545A CN201610900579.6A CN201610900579A CN106448545A CN 106448545 A CN106448545 A CN 106448545A CN 201610900579 A CN201610900579 A CN 201610900579A CN 106448545 A CN106448545 A CN 106448545A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 27
- 238000012795 verification Methods 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- RLLPVAHGXHCWKJ-IEBWSBKVSA-N (3-phenoxyphenyl)methyl (1s,3s)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate Chemical compound CC1(C)[C@H](C=C(Cl)Cl)[C@@H]1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 RLLPVAHGXHCWKJ-IEBWSBKVSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
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- 239000000969 carrier Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 230000011218 segmentation Effects 0.000 description 1
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- 208000011580 syndromic disease Diseases 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/10—Use of a protocol of communication by packets in interfaces along the display data pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses an LED display screen control system, a receiving card and a monitoring board. The LED display screen control system comprises at least one group of monitoring boards and a first receiving card which is electrically connected with each group of the monitoring boards, wherein each group of the monitoring boards is provided with a monitoring board or more than two monitoring boards which are cascaded with the first receiving card; the first receiving card is used for receiving and processing display data so as to form a data packet and transmitting the data packet to each group of the monitoring boards in a digital transmission mode; and the monitoring boards connected with the first receiving card are used for receiving and processing the data packet so as to acquire driving signals and outputting the driving signals to LED modules. The LED display screen control system can improve occurrence of a circumstance that an LED display screen flickers because of partial data and clock deformation or missing, and improve the display effect.
Description
Technical field
The present invention relates to LED technology field, more particularly to a kind of LED display control system and its receiving card and monitoring
Plate.
Background technology
Have that brightness height, less energy consumption, long service life, angular field of view be wide due to LED display, display mode and in showing
The advantages of holding rich and varied, the fields such as Information Communication and advertising are widely used to, become such as stadiums, road
The main carriers of the presentation of information such as traffic, financial instrument transaction, advertisement media.
The display effect of LED display is mainly restricted by the performance such as its refresh rate, gray level and brightness.In order to reach more
Good display effect, current LED display is just towards high refresh rate, high grade grey level, and high brightness direction is developed.
At present, LED display control system, as shown in figure 1, main by video frequency collection card 11, receiving card 12 and LED module
13 compositions.Video frequency collection card 11 complete video source data decoding, data conversion, segmentation and with PC control signaling interface,
Then video data and control signal are sent to by receiving card 12 by gigabit Ethernet or 100 m ethernet, receiving card 12 is received
And video data and control signal is forwarded, and band is carried video data and control signal decoding in region, video data is carried out
GAMMA is converted and is suitable for the scan conversion of 13 cabling of LED module, is converted into analogue signal, then by multichannel displacement output
Driving plate to LED module 13.The driving plate of LED module 13 receives and shifts video data, and according to control signal by number
According to output is latched, LED module 13 is lighted, so as to light LED display.
In above-mentioned LED display control system, a receiving card 12 cascades multiple LED modules 13, as shown in figure 1, simulation letter
Number export to the LED module 13 being directly connected to receiving card 12 from receiving card 12, then module signal is passed by the LED module 13
Adjacent LED module 13 is handed to, so from the first order to afterbody, level level is transmitted.Receiving card 12 and LED module 13 and
Typically carried out using TTL (Transistor-Transistor Logic, logic gates) transmission means between LED module 13
Data transfer, when analogue signal is transferred to afterbody LED module 13, partial data and clock may deform or lose, by
This causes the flicker of LED display.
Content of the invention
The present invention solves the technical problem of providing a kind of LED display control system and its receiving card and monitoring
Plate, can improve partial data and clock deformation or the problem that loses, so as to improve the display effect of LED display.
For solving above-mentioned technical problem, the present invention proposes a kind of LED display control system, including：Least one set is supervised
Control plate and the first receiving card being electrically connected with monitor board described in each group respectively, wherein, monitor board described in each group has
Monitor board described in one or the plural described monitor board with first receiving card cascade；First receiving card is used
Packet being formed in receiving, process video data, and the packet is transmitted to each group of institute by digital transmission mode
State monitor board；The monitor board being connected with first receiving card is used for receiving, processing the packet and obtain drive signal, and
The drive signal is exported to LED module.
Wherein, monitor board described in each group has the plural monitor board, and the packet is by the numeral
Transmission means is transmitted between the monitor board；Other monitor boards outside the monitor board being connected with first receiving card are same
Drive signal is obtained for receiving, processing the packet, and the drive signal is exported to LED module.
Wherein, each monitor board is operated alone a LED module by the drive signal.
Wherein, first receiving card includes the first telecommunication circuit and the first process circuit being electrically connected with, each described
Monitor board includes the second telecommunication circuit and the second processing circuit being electrically connected with；First process circuit is used for described first
The video data that telecommunication circuit is received and exported is processed into the packet；First telecommunication circuit is used for by described
Digital transmission mode transmits the packet to second telecommunication circuit；The second processing circuit is used for processing described the
The packet that two telecommunication circuits are received and exported and obtain the drive signal and export the drive signal to described
LED module；Second telecommunication circuit is next adjacent for being transferred to the packet by the digital transmission mode
Second telecommunication circuit of monitor board.
Wherein, first process circuit is specifically for adding verification section one by one to multiple data segments of the video data
Afterwards, data segment described in packing one and corresponding verification section and form a subdata bag, and to multiple subdata bags packings
Form the packet；The second processing circuit is obtained corresponding with the monitor board specifically for unpacking the packet
After the subdata bag, whether the verification section for verifying the subdata bag is correct, parses the subdata bag if correct and obtains
Obtain the drive signal；The subdata bag is not parsed if incorrect, and is fed back to by second telecommunication circuit described
First telecommunication circuit.
Wherein, the verification section is CRC check code.
Wherein, the LED display control system also includes：Controller and the second receiving card, the controller respectively with
First receiving card and the second receiving card are electrically connected with, and second receiving card is identical with first receiving card；Described
Monitor board or monitor board described in afterbody described in the first order in monitor board described in each group of two receiving cards electric connection；Described
Controller be used for according to the analysis result of the first telecommunication circuit of first receiving card feedback control first receiving card or
Second receiving card receives the video data.
Wherein, first process circuit, the second processing circuit are FPGA circuitry；First telecommunication circuit,
Second telecommunication circuit all includes LVDS interface.
For solving above-mentioned technical problem, the invention allows for a kind of receiving card of LED display control system, described connect
The monitor board for card being received with the LED display control system is electrically connected with, and the receiving card includes the first communication being electrically connected with
Circuit and the first process circuit, wherein, first process circuit was used for showing that first telecommunication circuit is received and exported
Registration evidence is processed into packet；First telecommunication circuit is used for transmitting the packet to described by digital transmission mode
Monitor board.
For solving above-mentioned technical problem, the invention allows for a kind of monitor board of LED display control system, the prison
Control plate is electrically connected with the receiving card of the LED display control system, and the monitor board includes the second communication being electrically connected with
Circuit and second processing circuit, wherein, second telecommunication circuit is defeated for receiving the receiving card by digital transmission mode
The data for going out, and by the data transfer to the second processing circuit；Or, described for being received by digital transmission mode
The data of receiving card output, and by the data transfer to the second processing circuit, and will by the digital transmission mode
The data output is to outside the monitor board；The second processing circuit is used for receiving, processing the data and obtain driving
Signal, and the drive signal is exported to LED module.
The invention has the beneficial effects as follows：Be different from the situation of prior art, due to the first receiving card and with this first receive
Digital transmission mode transmission packet is adopted between the monitor board of card connection, the digital transmission mode can ensure that digital signal is passed
Defeated stability, and then can improve to go out because of the situation that partial data and clock deform or lose the flicker for causing LED display
Existing, lift display effect.
Description of the drawings
Fig. 1 is the structured flowchart of an existing LED display control system；
Fig. 2 is the structured flowchart of one embodiment of LED display control system of the present invention；
Fig. 3 is the structured flowchart of the first receiving card and monitor board in Fig. 2 embodiment；
Fig. 4 is the structured flowchart of one embodiment of Fig. 2 embodiment neutron data bag；
Fig. 5 is the structured flowchart of one embodiment of packet in Fig. 2 embodiment；
Fig. 6 is the structured flowchart of another embodiment of LED display control system of the present invention；
Fig. 7 is the schematic flow sheet of one embodiment of LED display control method of the present invention；
Fig. 8 is the idiographic flow schematic diagram of step S1 in Fig. 7 embodiment；
Fig. 9 is the idiographic flow schematic diagram of step S3 in Fig. 7 embodiment.
Specific embodiment
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
It is the structured flowchart of one embodiment of LED display control system of the present invention refering to Fig. 2 to Fig. 5, Fig. 2.The present embodiment
LED display control system includes：First receiving card 21 and least one set monitor board 22, wherein, the first receiving card 21 respectively with
Each group of monitor board 22 is electrically connected with, and each group of monitor board 22 is had a monitor board 23 or cascaded with the first receiving card 21
Plural monitor board 23 (24).Wherein, the first receiving card 21 is used for receiving, processing video data and form packet,
And transmitted the packet to each group of monitor board 22 by digital transmission mode.The monitor board being connected with first receiving card 21
23 receive, process the packet and obtain drive signal, and the drive signal is exported to LED module.
The present embodiment LED display control system is received, is processed video data and form data using the first receiving card 21
Bag, and by digital transmission mode, packet is transmitted to the monitor board 23 of connection；The monitor board 23 is received, processing data bag and
Drive signal is obtained, and drive signal is exported to LED module.Due to being to adopt number between the first receiving card 21 and monitor board 23
Word transmission means is transmitted, and digital transmission mode can ensure that stability and the reliability of digital data transmission, and then
Can improve because of partial data and clock deformation or lose the situation appearance of the flicker for causing LED display, lift display effect.
It should be noted that when each group of monitor board 22 has the plural monitor board for cascading with the first receiving card 21
When 23 (24), 23 (first order monitor board) the processing data bag of monitor board that is joined directly together with first receiving card 21 and obtain driving
Signal, and packet can be transmitted to next stage monitor board 23 (24), next stage monitor board 23 by digital transmission mode
(24) same processing data bag and obtain drive signal and packet be transferred to by lower next stage by digital transmission mode and monitor
Plate 23 (24), until be transferred to afterbody monitor board 23 (24)；Or, first order monitor board can obtain institute with processing data bag
There is drive signal, and by TTL transmission means, drive signal is down transmitted step by step, until afterbody monitor board 23 (24).
In application scenarios, above-mentioned drive signal at least includes the signals such as RGB data signal, synchronization, pixel clock.
Further, each group of monitor board 22 is with plural monitor board 23 (24), and packet passes through Digital Transmission
Mode is transmitted between monitor board 23 (24).Other monitor boards 23 outside the monitor board 23 (24) being connected with the first receiving card 21
(24) be equally used for receiving, processing data bag and obtain drive signal, and drive signal is exported to LED module.
The present embodiment packet is transmitted between monitor board 23 (24) by digital transmission mode, i.e., data are being exported extremely
Digital transmission mode all being employed before LED module be transmitted, and then ensure that data that each monitor board 23 (24) is received
The stability and reliability of bag, further improves because of partial data and clock deformation or loses the flicker for causing LED display
Situation occur, lifted display effect.
It should be noted that packet is transmitted between different monitor boards 23 (24) by digital transmission mode, permissible
By other circuit realiration of LED display control system, it is also possible to realized by the telecommunication circuit for setting in monitor board 23 (24).
Meanwhile, the digital transmission mode is which has with respect to the communication mode of analogue signal for transmitting the communication mode of digital signal
There are stability and reliability；Specifically, the digital transmission mode can be LVDS transmission means, VGA (VideoGraphics
Array) transmission means or eDP (Embedded DisplayPort) transmission means etc..As for a monitor board 23 (24) even
The quantity of the LED module for connecing can be set according to the actual requirements, can be a LED module, two LED modules, even more many
Individual LED module.
Further, refering to Fig. 2 to Fig. 5, the first receiving card 21 is included at the first telecommunication circuit 31 and first of electric connection
Reason circuit 32.
Wherein, the first telecommunication circuit 31 receives the video data that transmits of host computer and passes to the first process circuit 32.First
After multiple data segments 41 of 32 pairs of video datas of process circuit add verification section 42 one by one, by each data segment 41 and accordingly
Verification section 42 is packed and forms a subdata bag 43 (as shown in Figure 4), and multiple subdata bags 43,44,45 are packed and added
Packet 52 (as shown in Figure 5) is formed after address bit 51, finally packet 52 is returned to the first telecommunication circuit 31.First communication
Circuit 31 is transmitted packet 52 to monitor board 23 by digital transmission mode.
Wherein, the address bit 51 is assigned " n ", wherein, address in the first process circuit 32 of the first receiving card 21
Position 51 with " n " as initial value, with " 1 " as equal difference, is incremented by each group of monitor board 22 step by step；In other words, first order monitoring
The address bit of plate is " n ", and the address bit of second level monitor board is " n+1 ", and the address bit of third level monitor board is " n+2 ", with this
Analogize.Wherein, n is that natural number, in the present embodiment, " n " is preferably " 0 ", but not limited to this.
Further, monitor board 23 (24) includes the second telecommunication circuit 61 and the second processing circuit 62 being electrically connected with.
Wherein, the second telecommunication circuit 61 receives the packet 52 that the first receiving card 21 is transmitted, and sends second processing electricity to
Road 62.Second processing circuit 62 is unpacked to packet 52 according to the assignment of the address bit 51 of packet 52 and is obtained and the prison
The corresponding subdata bag 43 of LED module 25 of the control connection of plate 23, and the verification section 42 of the subdata bag 43 is verified, if verifying into
Work(, then parse subdata bag 43 and obtain data segment 41, and produce the drive signal of LED module 25 according to data segment 41, should
Drive signal is sent to LED module 25；If verification is unsuccessful, subdata bag 43 is not parsed；Meanwhile, also check results are passed through
Second telecommunication circuit 61 returns to the first receiving card 21, is easy to the first receiving card 21 to do next step action.
In addition, while carrying out verifying, parse, 51 assignment of address bit of packet 52 is also added by the second processing circuit 62
" 1 ", and the packet 52 after being changed address bit 51 by the second telecommunication circuit 61 be transferred to by digital transmission mode next
Second telecommunication circuit 61 of adjacent monitor board 24.For example, the monitor board 23 being connected with the first receiving card 21 is according to packet 52
51 assignment of address bit " 0 " obtaining subdata bag 43, now 51 assignment of address bit " 0 " is added " 1 " to be arranged to " 1 ", with the prison
The next monitor board of the control connection of plate 23 obtains subdata bag 44 according to 51 assignment of address bit " 1 ", now assigns address bit 51
Value " 1 " adds " 1 " to be arranged to " 2 ", and by that analogy, to the last a monitor board 24 gets subdata bag 45.
The present embodiment LED display control system makes a subdata bag correspond to one by adding verification, packing to video data
Monitor board 23 (24), monitor board 23 (24) is first verified for the subdata bag of oneself, is verified by rear parsing and is obtained and drive
Dynamic signal, in this way, the display of mistake, distortion data can be avoided, it is ensured that the quality of video data, further improves because of portion
Divided data and clock deformation or loss cause the situation of the flicker of LED display to occur, and make display effect more preferable.And, the number
Simple according to the addressing system of bag, it is ensured that each monitor board obtains the corresponding subdata bag of oneself, improves data transmission efficiency.
In this embodiment, it is preferred that, the first process circuit 32, second processing circuit 42 are FPGA circuitry；First communication
Circuit 31 includes that LVDS interface, the second telecommunication circuit equal 41 include LVDS interface, realizes the first receiving card 21 and monitor board 23,24
Between, LVDS between monitor board 23,24 transmission.
Transmit with respect to traditional TTL, LVDS transmission can be prevented effectively from the loss of signal, make whole display screen display content
Synchronous, the concordance of display screen is improve, display effect is not only optimized, and, the use of wire rod is reduced, is reduced further
Cost, and easily by EMC certification.It should be noted that in other application scene, other circuits can be adopted to replace FPGA
Circuit, may also be employed other input/output interfaces and replaces LVDS interface, realize other digital transmission modes.
Wherein, FPGA (Field-Programmable Gate Array), i.e. field programmable gate array, it be
The product for developing on the basis of the programming devices such as PAL, GAL, CPLD further.It is led as special IC (ASIC)
A kind of semi-custom circuit in domain and occur, both solved the deficiency of custom circuit, overcome original programming device door again
The limited shortcoming of circuit number.FPGA have the advantages that a lot of such as can quick finished product, can be modified in correction program
Mistake and less expensive cost, while facilitate system upgrade.LVDS technology is a kind of difference signal technique of the low amplitude of oscillation, and it makes letter
Number can difference PCB line to or balanced cable on the speed rates of hundreds of Mbps, its low pressure width and low current drive output real
Low noise and low-power consumption are showed.
In this embodiment, it is preferred that, verification section 42 is CRC check code.In other application scene, other schools can be adopted
Proved recipe formula check code is used as verification section 42.
CRC is the most frequently used a kind of error check code in data communication field, it is characterized in that information field and check field
Length can be arbitrarily selected.The process for error detection being carried out using CRC can be briefly described for：In transmitting terminal according to k position to be transmitted
Binary code sequence, is produced r position picket code (CRC code) of a verification, is attached to raw information back, structure with certain rule
Become the common k+r position of new binary code sequence number, then send.In receiving terminal, according to institute between information code and CRC code
The rule for following is tested, to determine whether malfunction in transmission.This rule, is referred to as in Error control theory " generating many
Item formula ".
In another application scenarios, LED module 25 can will be anti-for the status informations such as temperature, voltage by monitor board 23 (24)
The first receiving card 21 is fed to, the first receiving card 21 is by the status information feedback to host computer, and then can realize to LED module 25
Real-time, the long-range monitoring of state.
Refering to Fig. 6, it is the structure of another embodiment of LED display control system of the present invention in the lump with reference to Fig. 2 and Fig. 3, Fig. 6
Block diagram, on the basis of above-described embodiment, the present embodiment LED display control system has at least two groups monitor boards 22 (28),
Each group of monitor board 22 (28) has at least two monitor boards 23,24,29,210, and each monitor board 23,24,29,210 is by driving
Dynamic signal is operated alone a LED module.
As a monitor board 23 (24,29,210) is operated alone a LED module 25 (211,212,213), and then through monitoring
Plate 23 parses the drive signal for obtaining and is directly transferred to show on LED module 25, need not be transferred to other LED modules, and then thorough
Bottom avoids because of partial data and clock deformation or loses the situation of the flicker for causing LED display, it is ensured that LED display is optimal
Display effect.
Further, the present embodiment LED display control system also includes controller 26 and the second receiving card 27, controller 26
It is electrically connected with the first receiving card 21, the second receiving card 27 respectively, the second receiving card 27 is identical with the first receiving card 21.Second connects
Receive card 27 and be electrically connected with the first order monitor board 23 (29) in each group of monitor board 22 (28) or afterbody monitor board 24
(210)；Controller is used for controlling the first receiving card according to the analysis result of first telecommunication circuit 31 of the first receiving card 21 feedback
21 or the second receiving card 27 receive video data.
As rascal (not validated subdata bag) or the situation for having no data can be fed back to by monitor board 23
One receiving card 21, then feeds back to controller 26, and then controller 26 judges whether to reach according to the check results for transmitting
Certain threshold value (rascal ratio), when a threshold is reached, controller 26 selects the second receiving card 27 to receive video data；When not up to
During threshold value, controller 26 keeps the first receiving card 21 to receive video data；And then data transfer route can be optimized, backup is provided
Data Source, it is ensured that the reliability of display.
Preferably, the first receiving card 21 is electrically connected with the first order monitor board 23 (29) of each group of monitor board 22 (28) respectively
Connect, the second receiving card 27 is connected with the afterbody monitor board 24 (210) of each group of monitor board 22 (28) respectively, and controller 26
Be arranged on host computer, so can pass through host computer direct monitoring both direction on the presence or absence of data or rascal ratio, when one
When individual direction does not have data or rascal to exceed certain proportion, another receiving card is switched to for input video data, it is ensured that show
Effect is best.
In the present embodiment, the first receiving card 21,27 operation principle of the second receiving card are the same, each monitor board 23,24,
29th, 210 operation principles are the same, and narration is not repeated herein.
In sum, prior art is different from, and the present embodiment LED display control system is using receiving card to video data
Carry out packet packing and packet is processed into, receive after the packet per each monitor board in group monitor board, verification, parsing connect therewith
The corresponding subdata bag of the LED module that connects, and drive signal is produced to the LED display.By the way, can avoid
The parsing of wrong data, and achieve the data of the LED module that each monitor board individual processing is attached thereto such that it is able to avoid
Because partial data and clock deformation or the situation for losing the flicker for causing LED display occur, it is ensured that display effect is optimal.
Additionally, the present embodiment also achieves the monitor in real time of LED module state, when LED state is not good or fault reaches
During certain threshold value, can report in time, to keep in repair to LED, it is ensured that LED display normal work.
Refering to Fig. 7, it is the schematic flow sheet of one embodiment of LED display control method of the present invention in the lump with reference to Fig. 6, Fig. 7,
The control method is comprised the following steps：
S1：The video data of reception is processed into packet 52；
S2：Using digital transmission mode between receiving card and each group of monitor board 22 or receiving card and monitor board 23
And transmission packet 52 between monitor board 23 and monitor board 24；
S3：Monitor board 23 is received, processing data bag 52 and obtain drive signal, and by drive signal export to monitor board
The LED module 25 of 23 connections.
In above-mentioned control method, receiving card corresponds to the first receiving card 21 of LED display control system, and then the control
Method adopts digital transmission mode between the first receiving card 21 and each group of monitor board 22 and monitors the monitor board of module 22
23rd, transmission packet between 24, the digital transmission mode can ensure that the stability of digital data transmission, and then can improve because
Partial data and clock deformation or loss cause the situation of the flicker of LED display to occur, and lift display effect.
Wherein, digital transmission mode is preferably LVDS transmission means.
Further, refering to Fig. 8, step S1 includes：
S91：Verification section 42 is added one by one to multiple data segments 41 of video data；
S92：Each data segment 41 and the corresponding verification section 42 of packing and form a subdata bag 43, and to multiple subdatas
Bag 43,42,43 is packed and forms packet 52；
Further, refering to Fig. 9, step S3 includes：
S101：Unpacked data bag 52 and obtain the subdata bag 43 corresponding with LED module 25；
S102：The verification section 42 of syndrome packet 43；
S103：Parse the drive signal that LED module 25 is obtained by the subdata bag 42 for verifying.
Be different from prior art, the present embodiment LED display control method using the packet of video data, packing, unpacking,
The modes such as verification make each monitor board obtain the corresponding subdata bag of the LED module being attached thereto, and produce drive signal to
The LED display.By the way, it is achieved that the data of the LED module that each monitor board individual processing is attached thereto, and single
Solely control the display of the LED module such that it is able to improve further and cause LED to show because of partial data and clock deformation or loss
The situation of the flicker of screen occurs, the display effect for being lifted further.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of LED display control system, it is characterised in that include：Least one set monitor board and respectively with each group of institute
State monitor board electric connection the first receiving card, wherein, monitor board described in each group have monitor board described in one or with described
The plural described monitor board of the first receiving card cascade；
First receiving card is used for receiving, processing video data and form packet, and will be described by digital transmission mode
Packet is transmitted to monitor board described in each group；
The monitor board being connected with first receiving card is used for receiving, processing the packet and obtain drive signal, and by institute
State drive signal to export to LED module.
2. LED display control system according to claim 1, it is characterised in that
Monitor board described in each group has the plural monitor board, and the packet is existed by the digital transmission mode
Transmit between the monitor board；
Other monitor boards outside the monitor board being connected with first receiving card be equally used for receiving, process the packet and
Drive signal is obtained, and the drive signal is exported to LED module.
3. LED display control system according to claim 2, it is characterised in that each monitor board is by described
Drive signal is operated alone a LED module.
4. the LED display control system according to Claims 2 or 3, it is characterised in that first receiving card includes electricity
Property connection the first telecommunication circuit and the first process circuit, each monitor board include be electrically connected with the second telecommunication circuit and
Second processing circuit；
First process circuit be used for the video data that first telecommunication circuit is received and exported be processed into described
Packet；First telecommunication circuit is used for transmitting the packet to the described second communication by the digital transmission mode
Circuit；
The second processing circuit is used for processing the packet that second telecommunication circuit receives and export and obtains described
Drive signal simultaneously exports the drive signal to the LED module；Second telecommunication circuit is used for passing by the numeral
The packet is transferred to defeated mode the second telecommunication circuit of next adjacent monitor board.
5. LED display control system according to claim 4, it is characterised in that
First process circuit specifically for adding to multiple data segments of the video data one by one after verification section, packing one
The data segment and corresponding verification section and form a subdata bag, and the number is formed to multiple subdata bags packings
According to bag；
The second processing circuit obtains the subdata corresponding with the monitor board specifically for unpacking the packet
Bao Hou, whether the verification section for verifying the subdata bag is correct, parses the subdata bag if correct and obtains the driving
Signal；The subdata bag is not parsed if incorrect, and the described first communication electricity is fed back to by second telecommunication circuit
Road.
6. LED display control system according to claim 5, it is characterised in that the verification section be.
7. LED display control system according to claim 5, it is characterised in that also include：Controller and second is received
Card, the controller is electrically connected with first receiving card and the second receiving card respectively, second receiving card and described the
One receiving card is identical；
Described in monitor board described in the first order in monitor board described in each group of the second receiving card electric connection or afterbody
Monitor board；
The controller is used for the analysis result control described first according to the first telecommunication circuit of first receiving card feedback
Receiving card or the second receiving card receive the video data.
8. LED display control system according to claim 4, it is characterised in that
First process circuit, the second processing circuit are FPGA circuitry；
First telecommunication circuit, the second telecommunication circuit all include LVDS interface.
9. a kind of receiving card of LED display control system, the monitor board of the receiving card and the LED display control system
It is electrically connected with, it is characterised in that the receiving card includes the first telecommunication circuit and the first process circuit being electrically connected with, wherein,
The video data that first process circuit is used for first telecommunication circuit to be received and exported is processed into packet；
First telecommunication circuit is used for transmitting the packet to the monitor board by digital transmission mode.
10. a kind of monitor board of LED display control system, the reception of the monitor board and the LED display control system
Card is electrically connected with, it is characterised in that the monitor board includes the second telecommunication circuit and the second processing circuit being electrically connected with, its
In,
Second telecommunication circuit is used for receiving the data of receiving card output by digital transmission mode, and by the data
Transmit to the second processing circuit；Or, for receiving the data of receiving card output by digital transmission mode, and will
The data transfer to the second processing circuit, and by the digital transmission mode by the data output to the monitoring
Outside plate；
The second processing circuit is used for receiving, processing the data and obtain drive signal, and the drive signal is exported
To LED module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610900579.6A CN106448545B (en) | 2016-10-14 | 2016-10-14 | LED display screen control system and receiving card and monitoring board thereof |
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| CN201610900579.6A CN106448545B (en) | 2016-10-14 | 2016-10-14 | LED display screen control system and receiving card and monitoring board thereof |
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| CN106448545B CN106448545B (en) | 2023-09-05 |
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| CN106448545B (en) | 2023-09-05 |
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