CN106782294B - LED display control system - Google Patents
LED display control system Download PDFInfo
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- CN106782294B CN106782294B CN201611219736.3A CN201611219736A CN106782294B CN 106782294 B CN106782294 B CN 106782294B CN 201611219736 A CN201611219736 A CN 201611219736A CN 106782294 B CN106782294 B CN 106782294B
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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]
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
The present invention proposes that a kind of LED display control system (30) includes front controller (31), the scanning card (33) of LED light template die group (35) and connection therebetween.Scanning card (33) and LED light template die group (35) respectively include the first chip (333) and the second chip (351).First chip (333) be used to receive and unpack data packet from front controller (31), to unpack the image data obtained after the data packet carry out processing and to treated image data re-groups package handle after image data packet export and be transmitted to the second chip (351) of LED light template die group (35) in a manner of differential signal.The LED drive circuit (355) that the image data that image data packet obtains after second chip (351) is used to receive and unpack image data packet after the processing from the first chip (35) and is handled according to unpacking generates control signal and shows that data group is sent in LED light template die group (35) carries out display driving.Therefore, the present invention can solve the problem of stable signal transmission difference between LED light template die group and scanning card.
Description
Technical field
The present invention relates to field of display technology more particularly to LED display control systems.
Background technique
Existing LED display control system mainly includes sending card, scanning card and LED display, wherein scanning card
It is configured in each LED box (comprising one or more LED light template die groups), multiple LED boxes are spliced into a LED and show
Screen.The display effect of LED display directly (or LED display control panel, is connect by the scanning card configured in each LED box
Receive card) it determines.In the case where LED box specification determines, the performance parameter of LED display determines substantially, especially universal
In driving chip LED display.
As shown in Figure 1, scanning card in existing LED display control system and LED light template die group and needing to cascade
LED light template die group and LED light template die group between the signal that transmits be mostly TTL single-ended signal, transmission medium is mostly multicore row
The interface of line, multicore winding displacement and LED light template die group is mostly dual-in-line connector.
Furthermore as shown in Fig. 2, existing LED display control system generally uses tertiary structure, including front-end control
The HUB plate (or pinboard) and LED light template die group of device, connection scanning card and LED light template die group；Front controller and scanning
Card is attached by kilomega network, is scanned card output signal and is passed through multicore winding displacement and LED after ports-Extending and signal enhancing
The connection of lamp plate mould group.On HUB plate, generally scanning is buckled on HUB plate；Scanning card on one HUB plate is configured with FPGA
Chip simultaneously drives multiple LED light template die groups.
However, scanning card increases the thickness of product with the connection of HUB plate in existing LED display control system,
It is unfavorable for the design of the small space distance LED display screen of high density.Scanning card drives multiple LED light template die groups, so since scanning cassette tape is wide
Limitation be difficult to support very big band section product.Furthermore universal driving chip is since its is cheap, although the time used
It is longer, still by the favor of client, for the LED box of general chip, due to its drive characteristic, need ceaselessly
Output gray level data, and the RGB data group of FPGA output is limited, is unable to satisfy display effect and requires relatively high occasion.In addition,
Due to being connected between scanning card and LED light template die group by winding displacement, there are following for existing signal transmission form and connection type
Problem: 1) each single-ended signal needs to occupy single line core, causes the core quantity of winding displacement more, sweeps LED light with a routine 8
For template die group, if desired two groups of RGB datas, in addition clock signal (CLK), latch signal (LAT), enable signal (OE), row
The signals one such as selection signal (A, B, C) share 12 single-ended signals, add at least one earth signal, at least need the row of 13 cores
Line, however some core limited amount systems using LED light template die group to access winding displacement are frequently present of in LED display industry,
Multicore winding displacement is inconvenient；2) since winding displacement core is more, the contact point of the connector between winding displacement and LED light template die group also compared with
More, single core is obstructed or poor contact will lead to display exception, and this reason bring failure is in LED display application event
Barrier accounts for significant proportion；3) TTL signal is because signal fading transmission is apart from limited, and typically not greater than 2 meters, some applications need
Longer transmission range, thus TTL signal is difficult to be competent at；And 4) winding displacement transmission TTL signal causes signal radiation larger, this gives
LED display is by EMC calibration tape come difficult.
Summary of the invention
Therefore, to overcome defect and deficiency in the prior art, the present invention proposes a kind of LED display control system.
Specifically, a kind of LED display control system that the embodiment of the present invention proposes, including front controller, scanning card
With LED light template die group, the scanning card is connected between the front controller and the LED light template die group.The scanning card
Including the first chip being arranged on first circuit board, the LED light template die group includes second of setting on the second circuit board
Chip and the LED drive circuit for connecting second chip.First chip is controlled for receiving and unpacking from the front end
The data packet of device processed carries out processing and to treated image data weight to unpacking the image data obtained after the data packet
Image data packet is exported and is transmitted to described the second of the LED light template die group in a manner of differential signal after new group packet is handled
Chip.Second chip is for receiving and unpacking after the processing from first chip image data packet and according to unpacking
The image data that image data packet obtains after the processing generates control signal and display data group sends the LED driving electricity to
Road carries out display driving to realize that image is shown in the LED light plate module.
In one embodiment of the invention, the scanning card further includes the multi path network being arranged on the first circuit board
Network transformer is separately connected first chip；The front controller of connection all the way in the multi-channel network transformer, institute
Other roads in multi-channel network transformer are stated for cascading next stage scanning card.
In one embodiment of the invention, the LED light template die group further includes being arranged on the second circuit board
Signal Booster and monitoring circuit, the Signal Booster are connected between second chip and the LED drive circuit, institute
State the second chip and the LED drive circuit described in monitoring circuit connection.
In one embodiment of the invention, the LED light template die group is multiple and is connected in parallel to the described of the scanning card
First chip is to carry out data packet transmission using in a manner of differential signal with first chip respectively.
In one embodiment of the invention, first chip specifically includes: the first data input and output conversion module,
Second data input and output conversion module, port switching module, image data unpack module, memory control module, order group
Packet unpacks module, parameter distribution module, image data processing module, first group of packet and unpacks module and the input of the first data of multichannel
Output module；The first and second data input and output conversion module is respectively used to carry out format to respective received data packet
Conversion；The port switching module connects the first and second data input and output conversion modules to identify that uplink and downlink data link is come
Complete input and output switching；Described image data unpack module and connect the port switching module to the institute for image data packet
Data packet is stated unpack and store the image data after unpacking by the memory control module；The order group
Packet unpacks module and is connected between the port switching module and the parameter distribution module to the data for order packet
Packet is unpacked to obtain supplemental characteristic；The parameter distribution module connection described image data processing module and first group of packet
Module is unpacked so that supplemental characteristic after the unpacking from order group packet unpacking module is handed down to described image data processing mould
Block and/or first group of packet unpack module；Described image data processing mould connects the parameter distribution module and the storage
Device control module with by the memory control module read unpack after image data carry out handle and will treated figure
As data are stored by the memory control module again；First group of packet unpacks module and connects the parameter distribution mould
Block and the memory control module by the image data after the memory control module reading process to be packaged
Image data packet exports from first data input/output module of multichannel and will distribute mould from the parameter after to processing
It is exported after the supplemental characteristic group packet of block from first data input/output module of multichannel.
In one embodiment of the invention, second chip specifically includes the second data input/output module, second
Group packet unpacks module and image driver module；Second group of packet unpacks module and connects the second data input and output
Module and described image driver module are defeated from first chip to be received by second data input/output module
It image data packet and is unpacked after processing out to obtain image data and send described image driver module, the figure to
As driver module be used to be unpacked according to second group of packet the image data that module transmission comes generate the control signal with
The display data group.
In one embodiment of the invention, second chip further includes that monitoring information acquisition module and third data are defeated
Enter output module, the monitoring information obtains module and connects second group of packet unpacking module, the third data input and output
Module connects second data input/output module and for cascading next stage LED light template die group；The LED light template die group is also
Including the monitoring circuit being arranged on the second circuit board, the described of the LED drive circuit and second chip is connected
Monitoring information obtains module.
In one embodiment of the invention, first data input/output module and the second data input and output
Module is 100,000,000 network interface modules, kilomega network interface module or LVDS interface module.
In addition, another embodiment of the present invention provides a kind of LED display control system, including front controller, scanning
Card and LED light template die group, the scanning card are connected between the front controller and the LED light template die group, the LED light
Template die group includes the LED drive circuit being arranged on the same circuit board and the connection LED drive circuit and as display picture
Multiple LED light of element.The scanning card includes the first chip and the second chip being arranged on the same circuit board.Wherein, institute
State the first chip for receiving and unpacking data packet from the front controller, to unpacking the figure obtained after the data packet
As data carry out processing and to treated image data re-groups package handled after image data packet export to described the
Two chips；Second chip is for receiving and unpacking after the processing from first chip image data packet and according to solution
Wrap that the image data that image data packet after the processing obtains generates control signal and display data group export and described in being transmitted to
The LED drive circuit of LED light template die group carries out display driving to realize that image is shown in the LED light plate module.
In one embodiment of the invention, first chip specifically includes: the first data input and output conversion module,
Second data input and output conversion module, port switching module, image data unpack module, memory control module, order group
Packet unpacks module, parameter distribution module, image data processing module, first group of packet and unpacks module and the input of the first data of multichannel
Output module；The first and second data input and output conversion module is respectively used to carry out format to respective received data packet
Conversion；The port switching module connects the first and second data input and output conversion modules to identify that uplink and downlink data link is come
Complete input and output switching；Described image data unpack module and connect the port switching module to the institute for image data packet
Data packet is stated unpack and store the image data after unpacking by the memory control module；The order group
Packet unpacks module and is connected between the port switching module and the parameter distribution module to the data for order packet
Packet is unpacked to obtain supplemental characteristic；The parameter distribution module connection described image data processing module and first group of packet
Module is unpacked so that supplemental characteristic after the unpacking from order group packet unpacking module is handed down to described image data processing mould
Block and/or first group of packet unpack module；Described image data processing mould connects the parameter distribution module and the storage
Device control module with by the memory control module read unpack after image data carry out handle and will treated figure
As data are stored by the memory control module again；First group of packet unpacks module and connects the parameter distribution mould
Block and the memory control module by the image data after the memory control module reading process to be packaged
Image data packet exports from first data input/output module of multichannel and will distribute mould from the parameter after to processing
It is exported after the supplemental characteristic group packet of block from first data input/output module of multichannel；Second chip specifically includes second
Data input/output module, second group of packet unpack module and image driver module；Second group of packet unpacks module and connects
Second data input/output module and described image driver module are connect by the second data input and output mould
Block is received from image data packet after the processing that first chip export and is unpacked to obtain described in image data sends to
Image driver module, described image driver module be used for according to second group of packet unpack module transmission come image
Data generate the control signal and the display data group；And second chip is multiple and is connected in parallel to first core
Piece.
From the foregoing, it will be observed that the embodiment of the present invention passes through the display driving part by the fpga chip of existing scanning card independently at small
Module isolated operation facilitates the bandwidth for reducing image processing section, supports that band carries greatly, supports highly dense small spacing screen body；It can be defeated
More display data group (such as multiple RGB data groups) out solves existing scanning and is stuck in universal driving chip LED display
The bad problem of middle display effect improves refresh rate and gray scale, achievees the purpose that improve LED display display effect；And pass through
Using new transmission mode, and in the past, scanning card is compared with LED light template die group winding displacement connection type, due to 333 He of the first chip
Second chip 351, which can set up separately, to be communicated in scanning card in LED light template die group and between the two using differential signal mode, can
Winding displacement core number is reduced to reach, improves the stability and reliability of transmission, EMI is reduced, more easily meets wanting for EMC
It asks.In terms of monitoring, by using differential signal transmission mode, it also can be reduced the error code transmitted at present using winding displacement, make to monitor
It is more reliable and more stable.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become obvious.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
It points out outside, it is not necessary to which scale attached drawing, they only try hard to conceptually illustrate structure and process described herein.
Detailed description of the invention
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail.
Fig. 1 is the structure and connection relationship diagram of scanning card and LED light template die group in the prior art.
Fig. 2 is the configuration diagram of LED display control system in the prior art.
Fig. 3 is a kind of LED display control system configuration diagram for being relevant to the embodiment of the present invention.
Fig. 4 is the schematic diagram of internal structure of the first chip shown in Fig. 3.
Fig. 5 is the schematic diagram of internal structure of the second chip shown in Fig. 3.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Specifically, the following embodiments of the present invention propose a kind of new LED display control system scheme, existing to solve
The problems in LED display control system reduces the volume of scanning card, supports that band carries greatly, supports highly dense small space distance LED display screen
Body；It is bad to solve the problems, such as that existing scanning is stuck in display effect in universal driving chip LED display body simultaneously, improves screen body
Display effect；And by using new transmission mode, reaches and reduces winding displacement number, improve the stability and reliability of transmission,
EMI is reduced, the requirement of EMC is more easily reached.
It is a kind of LED display control system configuration diagram for being relevant to the embodiment of the present invention referring to Fig. 3.Such as Fig. 3
It is shown, LED display control system 30: front controller 31, scanning card 33 and LED light template die group 35.
Wherein, front controller 31 can be the sending card of synchronous LED display screen control system, asynchronous LED display screen control
The Asynchronism Card etc. of system processed.
Scanning card 33 includes two-way network transformer 331a, 331b, the first chip 333 being arranged on same circuit board
With memory 335；Network transformer 331a, 331b and memory 335 are separately connected the first chip 333, wherein a road network becomes
Depressor 331a connection front controller 31, another way network transformer 331b is for cascading next stage scanning card.Memory 335 can
To be the dynamic RAMs such as SDRAM.Furthermore it is whole with signal that network transformer 331a, 331b can also be substituted for other
The circuit of the functions such as shape, enhancing and isolation.
Fig. 4 shows the internal structure of first chip 333 of the present embodiment.As shown in figure 4, the first chip 333 is mainly completed
Reception, forwarding, image data and the processing of supplemental characteristic etc. of data (such as image data, order data etc.) comprising: two
Road Phy ((Physical Layer, physical layer)) chip core 3330a, 3330b, two paths of data input and output conversion module
3331a, 3331b, port switching module 3332, image data unpack module 3333, memory control module 3334, order group packet
It unpacks module 3335, parameter distribution module 3336, image data processing module 3337, group packet and unpacks module 3338 and multichannel number
According to input/output module 3339.
Wherein, two-way Phy chip core 3330a, 3330b passes through network transformer 331a respectively, and 331b is mainly controlled with front end
Device 31 processed connects, and completes sending and receiving for differential signal such as gigabit network data.Two paths of data input and output conversion module
3331a, 3331b are separately connected Phy chip core 3330a, 3330b, mainly complete the defeated of Phy chip core 3330a, 3330b
Enter output data and be converted to inside to need data format, namely carries out Data Format Transform.The connection of port switching module 3,332 two
Circuit-switched data input and output conversion module 3331a, 3331b complete cable port mainly for identifying uplink and downlink data link
Input and output switching.Image data unpacks 3333 connectivity port switching module 3332 of module and memory control module 3334, main
It completes the parsing to image data packet (typically comprise field sync signal data and show data such as RGB data) and leads to
Memory control module 3334 is crossed to store the image data after parsing to external memory such as memory 335.Memory control
Molding block 3334 mainly completes bus arbitration and function of data distribution, for realizing the data access to memory 335.Order
Group packet unpacks 3335 connectivity port switching module 3332 of module and parameter distribution module 3336, main to complete under front controller 31
The unpacking of the order packet of hair obtains supplemental characteristic and send to parameter distribution module 3336 and the data for needing front controller
Group packet is in case send.Parameter distribution module 3336 is mainly used for issuing various parameters data for example to image data processing module
3337 unpack module 3338 with group packet to control the display of LED light plate module 35, specifically, 3336 lower section of parameter distribution module
Various parameters data for example comprising the driving chip type in LED light template die group needed for image data processing module 3337
(PWM type driving chip or universal driving chip), the display area size with carrying, output display data (such as RGB data)
Needed for the scanning mode (such as 8 sweep, 16 sweep, 32 sweep) and rear end LED light template die group 35 of total group number and LED light template die group
Supplemental characteristic is as wide high, the scanning number of the pixel of LED light template die group, scanning decoded mode, driving method, data group number and cabling letter
Breath etc..3337 Connecting quantity distribution module 3336 of image data processing module and memory control module 3334, it is main to complete figure
As the rearrangement, correction, gray scale of data the processing such as extract and by memory control module 3334 to the reading of image data and
The storage of image data after processing, wherein the rearrangement of image data is typically referred to according to the driving chip class in LED light template die group
Type is PWM type driving chip or universal driving chip to be adjusted to image data, and typically data rearrangement be by
According to data format needed for the above-listed driving chip of rear end LED light template die group (such as universal driving chip or PWM type driving chip)
And LED lamp panel cabling information etc. carries out gradation data position and rearranges and carry out the operation such as splicing and combining；It corrects e.g. anti-
Gamma correction, gamma correction or other correction such as chromaticity corrections；It is, for example, to carry out Bit separation very to image data that gray scale, which extracts,
Optimize to Bit, and typically gray scale extraction is that the gradation data after correction process carries out lock out operation according to every Bit, it will
Gradation data is transformed into according to different Bit by the way of different realization weights.Group packet unpacks the distribution of 3338 Connecting quantity of module
Module 3336, memory control module 3334 and data input/output module 3339, it is main to complete to be handled according to configuration parameter
Image data reads out from memory 335 and according to corresponding format group packet and by data input/output module 3339 afterwards
Send, and complete back packet connect packet and forwarding.Each circuit-switched data input/output module 3339 is used to and rear end LED lamp panel
Second chip 37 of mould group 35 is attached, and herein since data input/output module 3339 is multichannel, thus can connect more
A LED light template die group 35.It should be noted that memory 335 can also be integrated into the inside of the first chip 333, to reduce
The pin of chip.In addition, it is noted that due in the first chip 333 be configured with multichannel data input/output module 3339,
Thus it is equivalent to the ports-Extending function of being provided with HUB plate (pinboard)；In other words, scanning card 33 shown in Fig. 3 is certain
It can also be referred to as to have additional the HUB plate of the first chip 333, memory 335 and network transformer 331a, 331b in degree.Again
Person due to being configured with multichannel data input/output module 3339 in the first chip 333, thus is configured with the LED of the second chip 351
Lamp plate mould group 35 can be the first chip 333 that is multiple and being connected in parallel to scanning card 33 respectively with the first chip 333 using difference
Aspect carries out data packet transmission.
Hold above-mentioned, LED light template die group 35 includes the second chip 351, the Signal Booster that are arranged on same circuit board
(or driver) 353, LED drive circuit 355 and monitoring circuit 357.Wherein, on the second chip 351 connection scanning card 33
First chip 333 and cascade next stage LED light template die group；Signal Booster 353 is connected to the second chip 351 and LED and drives
It is, for example, 74HC245 family chip between circuit 355；LED drive circuit 355 include row selection chip (such as 3-8 decoding
Device) and column driving chip (such as well-known universal driving chip), with the multiple LED being arranged on same circuit board
Lamp (as display pixel) connection, to control the bright dark state of LED light and then realize that image is shown；It monitors circuit 357 and connects LED
Driving circuit 355 and the second chip 351 can obtain the various monitoring information ratios of LED light template die group 35 for example including MCU
Such as winding displacement testing result, point inspection data, temperature, voltage.
Fig. 5 shows the internal structure of second chip 351 of the present embodiment.As depicted in figs. 3 and 5, the second chip 351 is main
It completes to receive the image data packet and order packet and carry out display driving that first chip 333 exports, in addition it can be used to receive
Collect some monitoring informations in LED light template die group 35 and returns to first chip 333.In the second chip 351 and the first chip
Between 333,100,000,000 network interfaces, gigabit network interface, LVDS interface or other coffrets namely the first chip can be used
Data input/output module 3339 in 333 can be 100,000,000 network interface modules, kilomega network interface module, LVDS interface module or
Other coffret modules.More specifically, second chip 351 includes: data input/output module 3511, group packet in Fig. 5
It unpacks module 3513, image driver module 3515, monitoring information and obtains module 3517 and data input/output module
3519.Data input/output module 3511 is used to be attached with the first chip 333,3519 connection number of data input/output module
According to input/output module 3511, for being cascaded with the second chip of next stage.Data input/output module 3511,3519 is typical
Ground is and the structure having the same of data input/output module 3339 in the first chip 333.Group packet unpacks module 3513 and connects
Data input/output module 3511, it is main by data input/output module 3511 complete the communication with first chip 333 with
And complete the data that first chip 333 is sent to the unpacking and completion of the data packet exported from first chip 333
Group packet function.3515 connection group packet of image driver module unpacks module 3513, main to complete that picture number to be shown will be needed
Different drives is carried out according to the design requirement (difference including cabling mode, driving chip type etc.) according to LED light template die group 35
It is dynamic, namely show that data group and control signal make LED light template die group 35 complete image and show needed for output, display data herein
Group e.g. multiple RGB data groups, control signal be, for example, clock signal (CLK), latch signal (LAT), enable signal (OE),
Row selection signal (A, B, C) etc..Monitoring information obtains 3519 connection group packet of module and unpacks module 3513 and monitoring circuit 357,
Some control interfaces are mainly provided, the monitoring function to LED light template die group 35, temperature, electricity including LED light template die group 35 are completed
The monitoring such as pressure, runing time and the storage and readback of LED light template die group correction data.
In addition, front controller 31 and scanning card 33 are communicated by kilomega network, scanning card 33 and LED light in Fig. 3
It is communicated between template die group 35 by 100,000,000 nets or other signaling interfaces, between LED light template die group 35 and LED light template die group
It can also be cascaded.Or first chip 333 and second chip 351 the two chips be all placed in LED light template die group 35, lead to
Cross LVDS or the communication of other differential signals.Herein it should be noted that in the name of the first chip and the second chip "
One " and the purpose of " second " only for convenience of description, it is not intended to limit the invention.
It is described below in conjunction with the course of work of the Fig. 3 to Fig. 5 to the LED display control system 30 of the present embodiment:
Data packet (data packets such as image data packet and/or order packet) from front controller 31 passes through network transformer
After 331a is by certain all the way Phy chip core 3330a entrance, inside is converted to by data input and output conversion module 3331a first
Required data format, after port switching module 3332: 1) for image data packet, then unpacking module by image data
3333 complete solution packet function and by the storage of memory control module 3334 into external memory such as memory 335, image
Data processing module 3337 is deposited after reading image data completion processing in memory 335 again by memory control module 3334
It stores up in memory 335, it is defeated finally by being inputted after image data set packet after group 3338 pairs of module processing of packet unpacking by data
The output of module 3339 is output to the second chip 351 after formatting out；2) order is wrapped, then unpacks mould through order group packet
Block 3335 obtains supplemental characteristic and is issued to modules such as image real time transfer mould by parameter distribution module 3336 after unpacking
Block 3337 is used for modules, and relevant supplemental characteristic is also by group packet unpacking module 3338 and via data input and output mould
Block 3339 is handed down to the second chip 351.
After second chip 351 receives the data packet from the first chip 333, it is unpacked and is sent to image is shown
Drive module 375.Image driver module 3515 is according to different Packet types (image data packet, order packet etc.) using different
Processing mode, for order wrap (such as including supplemental characteristic), directly exported after unpacking LED light template die group 35 use, for
Image data packet is then exported according to cabling mode of model, LED light template die group 35 of driving chip in LED light template die group 35 etc.
Signal and display data group are controlled to LED light template die group 35 to realize that image is shown.
It should be noted that in the aforementioned embodiment, communicating with front controller (such as sending card) can be gigabit
PHY, but it is not limited only to gigabit PHY, it is also possible to SerDes interface, can also be other HSSI High-Speed Serial Interfaces namely Phy chip
Core 3330a, 3330b can be not limited to network differential signal for other differential signal interface modules.In addition, for the first chip
333, Phy chip core 3330a, 3330b can also be integrated into and；It, can also be by Signal Booster for the second chip 351
353 are integrated into, and the circuit of such LED light template die group 35 will be significantly simpler, or remove monitoring letter in the second chip 351
Breath obtains module 357 to simplify the second chip 351.
In conclusion the embodiment of the present invention passes through the display driving part by the fpga chip of existing scanning card independently at small
Module (corresponding second chip 351) isolated operation, facilitates the bandwidth for reducing image processing section, supports that band carries greatly, support high
Close small spacing screen body；More displays data group (such as multiple RGB data groups) can be exported, the existing scanning of solution is stuck in universal
The bad problem of display effect in driving chip LED display improves refresh rate and gray scale, reaches raising LED display and shows
The purpose of effect；And by using new transmission mode, and scanning blocked compared with LED light template die group winding displacement connection type in the past,
Since the first chip 333 and the second chip 351 can set up separately on scanning card and LED light template die group and between the two using difference letter
Number mode is communicated, and be can achieve and is reduced winding displacement core number, and the stability and reliability of transmission are improved, and reduces EMI, gentlier
The easy requirement for meeting EMC.In terms of monitoring, by using differential signal transmission mode, it also can be reduced and passed at present using winding displacement
Defeated error code keeps monitoring more reliable and more stable.
Finally it is worth mentioning that in other embodiments, the first chip 333 and the second chip 351 can also be all provided with
It sets on the circuit board where scanning card and scans the other structures in card 33 and LED light template die group 35 and be held essentially constant,
Certain beneficial effect can equally be reached for example to reduce the volume of scanning card, support that band carries greatly, support that highly dense small spacing LED is aobvious
Display screen body and the display effect for improving screen body.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (8)
1. a kind of LED display control system (30), including front controller (31), scanning card (33) and LED light template die group
(35), the scanning card (33) is connected between the front controller (31) and the LED light template die group (35)；Its feature exists
In the scanning card (33) includes the first chip (333) being arranged on first circuit board, LED light template die group (35) packet
Include the LED drive circuit (355) that the second chip (351) and connection second chip (351) on the second circuit board are set；
First chip (333) is used to receive and unpack data packet from the front controller (31), described in unpacking
The image data obtained after data packet carry out processing and to treated image data re-groups package handled after picture number
Second chip (351) of the LED light template die group (35) is transmitted to according to packet output and in a manner of differential signal；
Second chip (351) for receive and unpack after the processing from first chip (333) image data packet with
And control signal is generated according to the image data that image data packet after the unpacking processing obtains and shows that data group sends institute to
It states LED drive circuit (355) and carries out display driving to realize that image is shown on the LED light template die group (35)；
Wherein first chip (333) specifically includes: the first data input and output conversion module (3331a), the second data are defeated
Enter to export conversion module (3331b), port switching module (3332), image data and unpacks module (3333), memory control mould
Block (3334), order group packet unpack module (3335), parameter distribution module (3336), image data processing module (3337), the
One group of packet unpacks module (3338) and the first data input/output module of multichannel (3339)；
The first and second data input and output conversion module (3331a, 3331b) is respectively used to respective received data packet
It formats；
The port switching module (3332) connects the first and second data input and output conversion modules (3331a, 3331b) to know
Other uplink and downlink data link switches to complete input and output；
Described image data unpack module (3333) and connect the port switching module (3332) to the institute for image data packet
Data packet is stated unpack and store the image data after unpacking by the memory control module (3334)；
The order group packet unpacks module (3335) and is connected to the port switching module (3332) and the parameter distribution module
(3336) to be unpacked to obtain supplemental characteristic to the data packet for order packet between；
Parameter distribution module (3336) connection described image data processing module (3337) and first group of packet unpack mould
Block (3338) is to be handed down to described image data for supplemental characteristic after the unpacking for coming from order group packet unpacking module (3335)
Processing module (3337) and/or first group of packet unpack module (3338)；
Described image data processing module (3337) connects the parameter distribution module (3336) and the memory control module
(3334) handle and by treated to read the image data after unpacking by the memory control module (3334)
Image data is stored by the memory control module (3334) again；
First group of packet unpacks module (3338) and connects the parameter distribution module (3336) and the memory control module
(3334) with packaged by the image data after the memory control module (3334) reading process handled after scheme
As data packet exports from first data input/output module of multichannel (3339) and will come from the parameter distribution module
(3336) it is exported after supplemental characteristic group packet from first data input/output module of multichannel (3339).
2. LED display control system (30) as described in claim 1, which is characterized in that the scanning blocks (33) and further includes
Multi-channel network transformer (331a, 331b) on the first circuit board is set, first chip (333) is separately connected；
The front controller of connection all the way (31) in the multi-channel network transformer (331a, 331b), the multi-channel network transformation
Other roads in device (331a, 331b) are for cascading next stage scanning card.
3. LED display control system (30) as described in claim 1, which is characterized in that the LED light template die group (35) is also
Including the Signal Booster (353) being arranged on the second circuit board and monitoring circuit (357), the Signal Booster
(353) it is connected between second chip (351) and the LED drive circuit (355), monitoring circuit (357) connection
Second chip (351) and the LED drive circuit (355).
4. LED display control system (30) as described in claim 1, which is characterized in that the LED light template die group (35) is
First chip (333) that is multiple and being connected in parallel to the scanning card (33) is respectively with first chip (333) using poor
Sub-signal mode carries out data packet transmission.
5. LED display control system (30) as described in claim 1, which is characterized in that second chip (351) is specific
Module (3513) and image driver module are unpacked including the second data input/output module (3511), second group of packet
(3515)；Second group of packet unpacks module (3513) and connects second data input/output module (3511) and described image
Driver module (3515) by second data input/output module (3511) to be received from first chip (333)
It image data packet and is unpacked after the processing of output to obtain image data and send described image driver module to
(3515), described image driver module (3515) be used for according to second group of packet unpack module (3513) transmission come figure
As data generate the control signal and the display data group.
6. LED display control system (30) as claimed in claim 5, which is characterized in that second chip (351) is also wrapped
It includes monitoring information and obtains module (3517) and third data input/output module (3519), the monitoring information obtains module
(3517) it connects second group of packet and unpacks module (3513), third data input/output module (3519) connection described the
Two data input/output modules (3511) simultaneously are used to cascade next stage LED light template die group；The LED light template die group (35) further includes
Monitoring circuit (357) on the second circuit board is set, the LED drive circuit (355) and second chip are connected
(351) the monitoring information obtains module (3517).
7. LED display control system (30) as claimed in claim 5, which is characterized in that the first data input and output
Module (3339) and second data input/output module (3511) be 100,000,000 network interface modules, kilomega network interface module or
LVDS interface module.
8. a kind of LED display control system, including front controller (31), scanning card and LED light template die group, the scanning card
It is connected between the front controller (31) and the LED light template die group, the LED light template die group includes being arranged same
LED drive circuit (355) and the connection LED drive circuit (355) on circuit board and multiple LED as display pixel
Lamp；It is characterized in that, the scanning card includes the first chip (333) and the second chip being arranged on the same circuit board
(351)；
First chip (333) is used to receive and unpack data packet from the front controller (31), described in unpacking
The image data obtained after data packet carry out processing and to treated image data re-groups package handled after picture number
According to packet output to second chip (351)；
Second chip (351) for receive and unpack after the processing from first chip (333) image data packet with
And control signal is generated according to the image data that image data packet after the unpacking processing obtains and shows that data group is exported and passed
The LED drive circuit (355) for transporting to the LED light template die group carries out display driving with real in the LED light template die group
Existing image is shown；
Wherein first chip (333) specifically includes: the first data input and output conversion module (3331a), the second data are defeated
Enter to export conversion module (3331b), port switching module (3332), image data and unpacks module (3333), memory control mould
Block (3334), order group packet unpack module (3335), parameter distribution module (3336), image data processing module (3337), the
One group of packet unpacks module (3338) and the first data input/output module of multichannel (3339)；The first and second data input
Output conversion module (3331a, 3331b) is respectively used to format respective received data packet；The port switching
Module (3332) connects the first and second data input and output conversion modules (3331a, 3331b) to identify uplink and downlink data link
To complete input and output switching；Described image data unpack module (3333) connect the port switching module (3332) with to for
The data packet of image data packet unpack and by the memory control module (3334) to the picture number after unpacking
According to being stored；The order group packet unpacks module (3335) and is connected to the port switching module (3332) and the parameter point
To be unpacked to obtain supplemental characteristic to the data packet for order packet between hair module (3336)；The parameter distribution module
(3336) it is described will come from that described image data processing module (3337) and first group of packet unpacking module (3338) are connected
Supplemental characteristic is handed down to described image data processing module (3337) and/or institute after the unpacking of order group packet unpacking module (3335)
It states first group of packet and unpacks module (3338)；Described image data processing module (3337) connects the parameter distribution module (3336)
With the memory control module (3334) to read the image data after unpacking by the memory control module (3334)
Handle and image data is stored by the memory control module (3334) again by treated；Described first group
Packet unpacks module (3338) and connects the parameter distribution module (3336) and the memory control module (3334) to pass through
Image data after stating memory control module (3334) reading process packages handled after image data packet from described
The first data input/output module of multichannel (3339) output and the supplemental characteristic that the parameter distribution module (3336) will be come from
It is exported after group packet from first data input/output module of multichannel (3339)；
Second chip (351) specifically includes the second data input/output module (3511), second group of packet unpacks module
(3513) and image driver module (3515)；It is defeated that second group of packet unpacks module (3513) connection second data
Enter output module (3511) and described image driver module (3515) by second data input/output module
(3511) it receives from image data packet after the processing that first chip (333) exports and is unpacked to obtain image data biography
It gives described image driver module (3515), described image driver module (3515) is used for according to second group of packet
It unpacks the image data that module (3513) transmission comes and generates the control signal and the display data group；And
Second chip (351) is multiple and is connected in parallel to first chip (333).
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| CN201611219736.3A CN106782294B (en) | 2016-12-26 | 2016-12-26 | LED display control system |
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| CN201611219736.3A CN106782294B (en) | 2016-12-26 | 2016-12-26 | LED display control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107705749A (en) * | 2017-10-13 | 2018-02-16 | 郑州云海信息技术有限公司 | A kind of display drive method and device |
| CN108419336B (en) * | 2018-04-09 | 2019-12-10 | 横店集团得邦照明股份有限公司 | LED light screen control system and implementation method thereof |
| CN109360528B (en) * | 2018-12-21 | 2020-10-30 | 蒲旖 | LED advertising machine control card and control system thereof |
| CN113066388A (en) * | 2019-12-16 | 2021-07-02 | 西安诺瓦星云科技股份有限公司 | Expansion daughter card and system control board card assembly |
| CN111028719B (en) * | 2019-12-30 | 2021-11-09 | 深圳市洲明科技股份有限公司 | Lamp panel connecting plate and LED display screen |
| CN112071219B (en) * | 2020-09-18 | 2022-08-26 | 深圳市奥拓电子股份有限公司 | Adapter plate, LED display box body and LED display screen |
| CN114639336B (en) * | 2020-12-15 | 2024-05-07 | 西安钛铂锶电子科技有限公司 | Display module and display box |
| WO2024103820A1 (en) * | 2022-11-16 | 2024-05-23 | 海信视像科技股份有限公司 | Led display device and control method therefor |
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