CN106782294A - LED display control system - Google Patents
LED display control system Download PDFInfo
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- CN106782294A CN106782294A CN201611219736.3A CN201611219736A CN106782294A CN 106782294 A CN106782294 A CN 106782294A CN 201611219736 A CN201611219736 A CN 201611219736A CN 106782294 A CN106782294 A CN 106782294A
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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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- 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 present invention proposes that a kind of LED display control system (30) includes front controller (31), LED lamp panel module (35) and connection scanning card (33) therebetween.Scanning card (33) and LED lamp panel module (35) include the first chip (333) and the second chip (351) respectively.First chip (333) for receiving and unpack the packet from front controller (31), to unpack the view data obtained after the packet processed and the view data after treatment is re-grouped package process after view data bag export and transmitted in differential signal mode to second chip (351) of LED lamp panel module (35).Second chip (351) is for receiving and unpacks after the treatment from the first chip (35) view data bag and produces control signal and display data group to send the LED drive circuit (355) on LED lamp panel module (35) to and carry out display driving according to the view data that view data bag after unpacking treatment is obtained.Therefore, the present invention can solve the problems, such as that stable signal transmission is poor between LED lamp panel module and scanning card.
Description
Technical field
The present invention relates to display technology field, more particularly to LED display control system.
Background technology
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 lamp panel modules), 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) determine.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 lamp panel module and needing cascade
LED lamp panel module and LED lamp panel module between transmit signal be generally TTL single-ended signal, transmission medium be generally multicore row
Line, multicore winding displacement is generally dual-in-line connector with the interface of LED lamp panel module.
Furthermore, as shown in Fig. 2 existing LED display control system typically uses tertiary structure, including front-end control
The HUB plates (or pinboard) and LED lamp panel module of device, connection scanning card and LED lamp panel module；Front controller and scanning
Card is attached by kilomega network, and scanning card output signal is by passing through multicore winding displacement and LED after ports-Extending and signal enhancing
Lamp plate module is connected.On HUB plates, typically scanning is buckled on HUB plates；Scanning card on one HUB plate is configured with FPGA
Chip simultaneously drives multiple LED lamp panel modules.
However, in existing LED display control system, scanning card increased the thickness of product with the connection of HUB plates,
It is unfavorable for the design of the small space distance LED display screen of high density.Scanning card drives multiple LED lamp panel modules, so because scanning cassette tape is wide
Limitation be difficult to support that very big band section is accumulated.Furthermore, universal driving chip is cheap due to its, although the time for using
It is more long, the favor of client is still under, for the LED box of general chip, because its drive characteristic is, it is necessary to ceaselessly
Output gray level data, and the RGB data group of FPGA outputs is limited, it is impossible to meet display effect requirement occasion higher.Additionally,
Due to being connected by winding displacement between scanning card and LED lamp panel module, existing signal transmission form and connected mode exist following
Problem：1) each single-ended signal is needed to take single line core, causes the core quantity of winding displacement more, and LED is swept with a routine 8
As a example by template die group, if desired two groups of RGB datas add clock signal (CLK), latch signal (LAT), enable signal (OE), OK
The signals one such as selection signal (A, B, C) have 12 single-ended signals, along with least one earth signal, at least need the row of 13 cores
Line, but often there are some in LED display industry and apply LED lamp panel module to accessing the core limited amount system of winding displacement,
Multicore winding displacement is inconvenient；2) because winding displacement core is more, the contact point of the connector between winding displacement and LED lamp panel module also compared with
Many, single core is obstructed or loose contact may result in display exception, and the failure that this reason is brought is in LED display application event
Barrier accounts for significant proportion；3) because signal attenuation transmission range is limited, typically not greater than 2 meters, some application scenarios need TTL signal
Longer transmission range, thus TTL signal is difficult to be competent at；And 4) winding displacement transmission TTL signal cause signal radiate it is larger, this gives
LED display is by EMC calibration tapes come difficult.
The content of the invention
Therefore, it is of the invention to propose a kind of LED display control system to overcome defect of the prior art and deficiency.
Specifically, a kind of LED display control system that the embodiment of the present invention is proposed, including front controller, scanning card
With LED lamp panel module, the scanning card is connected between the front controller and the LED lamp panel module.The scanning card
Including the first chip being arranged on first circuit board, the LED lamp panel module includes setting second on the second circuit board
The LED drive circuit of chip and connection second chip.First chip is used to receive and unpack from front end control
The packet of device processed, the view data to being obtained after the unpacking packet are processed and to the view data weight after treatment
View data bag is exported and transmitted in differential signal mode to described the second of the LED lamp panel module after new group bag is processed
Chip.Second chip is used to receive and unpack after the treatment from first chip view data bag and according to unpacking
The view data that view data bag is obtained after the treatment produces control signal and display data group to send the LED to and drives electricity
Road carries out display driving and realizes that image shows with the LED plate module.
In one embodiment of the invention, the scanning card also includes the multi path network being arranged on the first circuit board
Network transformer, connects first chip respectively；The front controller of connection all the way in the multi-channel network transformer, institute
Stating other roads in multi-channel network transformer is used to cascade next stage scanning card.
In one embodiment of the invention, the LED lamp panel module also includes being arranged on the second circuit board
Signal Booster and supervisory circuit, the Signal Booster are connected between second chip and the LED drive circuit, institute
State supervisory circuit connection second chip and the LED drive circuit.
In one embodiment of the invention, the LED lamp panel module is multiple and is connected in parallel to the described of the scanning card
First chip using differential signal mode with first chip carrying out packet transmission respectively.
In one embodiment of the invention, first chip is specifically included：First data input output modular converter,
Second data input output modular converter, port handover module, view data unpack module, memory control module, order group
Bag unpacks module, parameter distribution module, image data processing module, first group of bag and unpacks module and the data input of multichannel first
Output module；The first and second data inputs output modular converter is respectively used to enter row format to respective received data packet
Conversion；The port handover module connects the first and second data inputs output modular converter to be come with recognizing up-downgoing data link
Complete input and output switching；Described image data unpack module and connect the port handover module with to the institute for view data bag
Packet is stated to be unpacked and store the view data after unpacking by the memory control module；The order group
Bag unpacks module and is connected between the port handover module and the parameter distribution module with to the data for order bag
Bag unpack obtaining supplemental characteristic；The parameter distribution module connects described image data processing module and first group of bag
Unpack module and be handed down to described image data processing mould with by supplemental characteristic after the unpacking that module is unpacked from the order group bag
Block and/or first group of bag unpack module；Described image data processing mould connects the parameter distribution module and the storage
Device control module is processed and by the figure after treatment with reading the view data after unpacking by the memory control module
As data are stored by the memory control module again；First group of bag unpacks module and connects the parameter distribution mould
Block and the memory control module are packaged with by the view data after the memory control module reading process
View data bag is exported from the data input/output module of the multichannel first and will distribute mould from the parameter after to treatment
Exported from the data input/output module of the multichannel first after the supplemental characteristic group bag of block.
In one embodiment of the invention, second chip specifically includes the second data input/output module, second
Group bag unpacks module and image driver module；Second group of bag unpacks module and connects the second data input output
Module and described image driver module receive defeated from first chip with by second data input/output module
View data bag and unpacked and sent to described image driver module, the figure to obtain view data after the treatment for going out
As driver module be used for according to second group of bag unpack the view data that module transmission comes produce the control signal with
The display data group.
In one embodiment of the invention, second chip also includes that monitoring information acquisition module and the 3rd data are defeated
Enter output module, the monitoring information acquisition module connects second group of bag and unpacks module, the 3rd data input output
Module connects second data input/output module and for cascading next stage LED lamp panel module；The LED lamp panel module is also
Including the supervisory circuit being arranged on the second circuit board, the described of the LED drive circuit and second chip is connected
Monitoring information acquisition module.
In one embodiment of the invention, first data input/output module and second data input are exported
Module is 100,000,000 network interface modules, kilomega network interface module or LVDS interface module.
Additionally, a kind of LED display control system that another embodiment of the present invention is provided, including front controller, scanning
Card and LED lamp panel module, the scanning card are connected between the front controller and the LED lamp panel module, the LED
Template die group includes the LED drive circuit being arranged on same circuit board and connects the LED drive circuit and conduct display picture
Multiple LEDs of element.The scanning card includes the first chip and the second chip that are arranged on same circuit board.Wherein, institute
The first chip is stated for receiving and unpacking the packet from the front controller, to unpacking the figure obtained after the packet
As data processed and the view data after treatment is re-grouped package processed after view data bag export to described
Two chips；Second chip is used to receive and unpack after the treatment from first chip view data bag and according to solution
Wrapping the view data that view data bag after the treatment obtains produces control signal and display data group to export and transmit to described
The LED drive circuit of LED lamp panel module carries out display driving and realizes that image shows with the LED plate module.
In one embodiment of the invention, first chip is specifically included：First data input output modular converter,
Second data input output modular converter, port handover module, view data unpack module, memory control module, order group
Bag unpacks module, parameter distribution module, image data processing module, first group of bag and unpacks module and the data input of multichannel first
Output module；The first and second data inputs output modular converter is respectively used to enter row format to respective received data packet
Conversion；The port handover module connects the first and second data inputs output modular converter to be come with recognizing up-downgoing data link
Complete input and output switching；Described image data unpack module and connect the port handover module with to the institute for view data bag
Packet is stated to be unpacked and store the view data after unpacking by the memory control module；The order group
Bag unpacks module and is connected between the port handover module and the parameter distribution module with to the data for order bag
Bag unpack obtaining supplemental characteristic；The parameter distribution module connects described image data processing module and first group of bag
Unpack module and be handed down to described image data processing mould with by supplemental characteristic after the unpacking that module is unpacked from the order group bag
Block and/or first group of bag unpack module；Described image data processing mould connects the parameter distribution module and the storage
Device control module is processed and by the figure after treatment with reading the view data after unpacking by the memory control module
As data are stored by the memory control module again；First group of bag unpacks module and connects the parameter distribution mould
Block and the memory control module are packaged with by the view data after the memory control module reading process
View data bag is exported from the data input/output module of the multichannel first and will distribute mould from the parameter after to treatment
Exported from the data input/output module of the multichannel first after the supplemental characteristic group bag of block；Second chip specifically includes second
Data input/output module, second group of bag unpack module and image driver module；Second group of bag unpacks module and connects
Connect second data input/output module and described image driver module and export mould with by second data input
Block receive from view data bag after the treatment of first chip output and unpacked with obtain view data send to it is described
Image driver module, described image driver module be used for according to second group of bag unpack module transmission come image
Data produce the control signal and the display data group；And second chip is for multiple and is connected in parallel to first core
Piece.
From the foregoing, it will be observed that the embodiment of the present invention is by independent into small by the display driving part of the fpga chip of existing scanning card
Module isolated operation, helps to reduce the bandwidth of image processing section, supports that big band is carried, and supports highly dense small spacing screen body；Can be defeated
Go out more display data groups (such as multiple RGB data groups), solve existing scanning and be stuck in universal driving chip LED display
The bad problem of middle display effect, improves refresh rate and gray scale, reaches the purpose for improving LED display display effect；And pass through
Using new transmission means, and scanning blocked compared with LED lamp panel module winding displacement connected mode, due to the He of the first chip 333 in the past
Second chip 351 can set up separately on scanning card and LED lamp panel module and be communicated between the two using differential signal mode, can
Winding displacement core number is reduced to reach, the stability and reliability of transmission is improved, EMI is reduced, wanting for EMC is more easily met
Ask.In terms of monitoring, by using differential signal transmission mode, the error code for being transmitted using winding displacement at present can be also reduced, make monitoring
It is more reliable and more stable.
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.But should know
Road, the accompanying drawing 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
Point out outward, it is not necessary to scale accompanying drawing, they only try hard to conceptually illustrate structure described herein and flow.
Brief description of the drawings
Below in conjunction with accompanying drawing, specific embodiment of the invention is described in detail.
Fig. 1 is the structure and annexation schematic diagram of scanning card and LED lamp panel module 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 internal structure schematic diagram of the first chip shown in Fig. 3.
Fig. 5 is the internal structure schematic diagram of the second chip shown in Fig. 3.
Specific embodiment
To enable the above objects, features and advantages of the present invention more obvious understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Specifically, following embodiments of the invention propose a kind of new LED display control system scheme, existing to solve
Problem in LED display control system, reduces the volume of scanning card, supports that big band is carried, and supports highly dense small space distance LED display screen
Body；Simultaneously solve the problems, such as it is existing scanning be stuck in universal driving chip LED display body in display effect it is bad, improve screen body
Display effect；And by using new transmission means, reduction winding displacement number is reached, the stability and reliability of transmission are improved,
EMI is reduced, the requirement of EMC is more easily reached.
Referring to Fig. 3, it is a kind of LED display control system configuration diagram for being relevant to the embodiment of the present invention.Such as Fig. 3
It is shown, LED display control system 30：Front controller 31, scanning card 33 and LED lamp panel module 35.
Wherein, front controller 31 can be the sending card of synchronous LED display screen control system, asynchronous LED display screen control
Asynchronism Card of system processed etc..
Scanning card 33 includes two-way the network transformer 331a, 331b, the first chip 333 that are arranged on same circuit board
With memory 335；Network transformer 331a, 331b and memory 335 connect the first chip 333 respectively, wherein a road network becomes
Depressor 331a connects front controller 31, and another road network transformer 331b is used to cascade next stage scanning card.Memory 335 can
Being the dynamic RAMs such as SDRAM.Furthermore, network transformer 331a, 331b can also be substituted for other has signal whole
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 main completion of the first chip 333
Treatment of the reception of data (such as view data, order data etc.), forwarding, view data and supplemental characteristic etc., it includes：Two
Road Phy ((Physical Layer, physical layer)) chip core 3330a, 3330b, two paths of data input and output modular converter
3331a, 3331b, port handover module 3332, view data unpack module 3333, memory control module 3334, order group bag
Unpack module 3335, parameter distribution module 3336, image data processing module 3337, group bag and unpack module 3338 and many ways
According to input/output module 3339.
Wherein, two-way Phy chip cores 3330a, 3330b is mainly controlled by network transformer 331a, 331b with front end respectively
Device processed 31 is connected, and completes the reception and transmission of differential signal such as gigabit network data.Two paths of data input and output modular converter
3331a, 3331b connect Phy chip core 3330a, 3330b respectively, and it is mainly completed the defeated of Phy chip cores 3330a, 3330b
Entering output data and being converted to inside needs data form, namely carries out Data Format Transform.The connection of port handover module 3,332 two
Circuit-switched data input and output modular converter 3331a, 3331b, it completes netting twine port mainly for identification up-downgoing data link
Input and output switch.View data unpacks the connectivity port handover module 3332 of module 3333 and memory control module 3334, main
Complete to the parsing of view data bag (typically comprising field sync signal data and display data such as RGB data) and logical
Memory control module 3334 is crossed to store to external memory storage such as memory 335 view data after parsing.Memory control
Molding block 3334 mainly completes bus arbitration and function of data distribution, for realizing the data access to memory 335.Order
Group bag unpacks the connectivity port handover module 3332 of module 3335 and parameter distribution module 3336, main to complete under front controller 31
The unpacking of the order bag of hair obtains supplemental characteristic and delivers to parameter distribution module 3336 and the data for needing front controller
Group bag is in case send.Parameter distribution module 3336 is mainly used in issuing various parameters data for example to image data processing module
3337 unpack module 3338 to control the display of LED plate module 35 with group bag, specifically, the lower section of parameter distribution module 3336
Various parameters data for example comprising the driving chip type on the LED lamp panel module needed for image data processing module 3337
(PWM types driving chip or universal driving chip), viewing area size, output display data (such as RGB data) with carrying
Needed for the scan mode (such as 8 sweep, 16 sweep, 32 sweep) of total group number and LED lamp panel module and rear end LED lamp panel module 35
Supplemental characteristic is as the pixel of LED lamp panel module high, scanning number wide, scanning decoded mode, type of drive, data group number and cabling letter
Breath etc..The Connecting quantity distribution module 3336 of image data processing module 3337 and memory control module 3334, it is main to complete figure
As rearrangements of data, correction, gray scale extract etc. process and by memory control module 3334 to the reading of view data and
The rearrangement of the storage of view data after treatment, wherein view data is typically referred to according to the driving chip class on LED lamp panel module
Type is PWM types driving chip or universal driving chip to be adjusted to view data, and typically data rearrangement be by
According to data form needed for the above-listed driving chip of rear end LED lamp panel module (such as universal driving chip or PWM types driving chip)
And LED lamp panel cabling information etc. carries out gradation data position and the operation such as rearranges and splice and combine；Correction is, for example, anti-
Gamma correction, gamma correction or other correction such as chromaticity corrections；It is, for example, to carry out Bit to view data to separate very that gray scale is extracted
To Bit optimizations, and it is that gradation data after correction process carries out lock out operation according to every Bit that typically gray scale is extracted, will
Gradation data be transformed into according to different Bit using it is different realize weight by the way of.Group bag unpacks the distribution of the Connecting quantity of module 3338
Module 3336, memory control module 3334 and data input/output module 3339, it is main to complete to be processed according to configuration parameter
View data reads out and according to corresponding form group bag and by data input/output module 3339 from memory 335 afterwards
Send, and complete back connecing for bag and wrap and forward.Each circuit-switched data input/output module 3339 is used for and rear end LED lamp panel
Second chip 37 of module 35 is attached, and herein because data input/output module 3339 is multichannel, thus can connect many
Individual LED lamp panel module 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 to being configured with multichannel data input/output module 3339 in the first chip 333,
Thus it is equivalent to the ports-Extending function of being provided with HUB plates (pinboard)；In other words, the scanning card 33 shown in Fig. 3 is certain
The HUB plates of the first chip 333, memory 335 and network transformer 331a, 331b can also be referred to as to have additional 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 module 35 can be the first chip 333 that is multiple and being connected in parallel to scanning card 33 to use difference with the first chip 333 respectively
Aspect carries out packet transmission.
Hold above-mentioned, LED lamp panel module 35 includes the second chip 351, Signal Booster being arranged on same circuit board
(or driver) 353, LED drive circuit 355 and supervisory circuit 357.Wherein, on the connection of the second chip 351 scanning card 33
First chip 333 and cascade next stage LED lamp panel module；Signal Booster 353 is connected to the second chip 351 and is driven with LED
Between circuit 355, it is, for example, 74HC245 family chips；LED drive circuit 355 includes that (such as 3-8 is decoded row selection chip
Device) and row driving chip (such as well-known universal driving chip), itself and the multiple LED being arranged on same circuit board
Lamp (as display pixel) is connected, to control the bright dark state of LED and then realize that image shows；Supervisory circuit 357 connects LED
The chip 351 of drive circuit 355 and second, it for example includes MCU, can obtain the various monitoring information ratios of LED lamp panel module 35
Such as winding displacement testing result, point examine 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
The view data bag and order for completing first output of chip 333 of reception are wrapped and carry out display driving, it can in addition contain be used for receiving
Collect some monitoring informations on LED lamp panel module 35 and return to first chip 333.In the second chip 351 and the first chip
Between 333, it is possible to use 100,000,000 network interfaces, gigabit network interface, LVDS interface or other coffrets, namely the first chip
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, in Figure 5, second chip 351 includes：Data input/output module 3511, group bag
Unpack module 3513, image driver module 3515, monitoring information acquisition module 3517 and data input/output module
3519.Data input/output module 3511 is used for being attached with the first chip 333, the connection number of data input/output module 3519
According to input/output module 3511, for being cascaded with the chip of next stage second.The typical case of data input/output module 3511,3519
Ground is that have identical structure with the data input/output module 3339 in the first chip 333.Group bag unpacks module 3513 and connects
Data input/output module 3511, it is main by data input/output module 3511 complete with the communication of first chip 333 with
And complete to be sent to the unpacking and completion of the packet from the output of first chip 333 first data of chip 333
Group packet function.The connection group bag of image driver module 3515 unpacks module 3513, the main picture number completed display is needed
Different drives are carried out according to the design requirement (including the difference of cabling mode, driving chip type etc.) according to LED lamp panel module 35
It is dynamic, namely exporting required display data group and control signal shows the completion image of LED lamp panel module 35, display data herein
Group is, for example, multiple RGB data groups, control signal is, for example, clock signal (CLK), latch signal (LAT), enable signal (OE),
Row selection signal (A, B, C) etc..The connection group bag of monitoring information acquisition module 3519 unpacks module 3513 and supervisory circuit 357, its
Some control interfaces are mainly provided, the monitoring function to LED lamp panel module 35 is completed, including LED lamp panel module 35 temperature, electricity
The monitoring such as pressure, run time and the storage and retaking of a year or grade of LED lamp panel module correction data.
Additionally, in figure 3, front controller 31 and scanning card 33 are communicated by kilomega network, scanning card 33 and LED
Communicated by 100,000,000 nets or other signaling interfaces between template die group 35, between LED lamp panel module 35 and LED lamp panel module
Can also be cascaded.Or first chip 333 and second chip 351 the two chips be all placed on LED lamp panel module 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 " second " purpose only for convenience of description, not for limiting the present invention.
The course of work of the LED display control system 30 of the present embodiment is described below in conjunction with Fig. 3 to Fig. 5：
Packet (packet such as view data bag and/or order bag) from front controller 31 passes through network transformer
After 331a is by certain all the way Phy chip cores 3330a entrance, modular converter 3331a is exported by data input first and is converted to inside
Required data form, by after port handover module 3332：1) for view data bag, then module is unpacked by view data
During 3333 complete solution packet functions and store external memory storage such as memory 335 by memory control module 3334, image
Data processing module 3337 is read after view data completion is processed from memory 335 by memory control module 3334 and deposited again
Store up in memory 335, unpacked finally by a group bag defeated by data input after image data set bag after module 3338 pairs is processed
Go out module 3339 export into row format conversion after export to the second chip 351；2) wrapped for order, then unpack mould through order group bag
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 related supplemental characteristic unpacks module 3338 and exports mould via data input also by a group bag
Block 3339 is handed down to the second chip 351.
After second chip 351 receives the packet from the first chip 333, image is unpacked and delivered to it and is shown
Drive module 375.Image driver module 3515 is according to different Packet types (view data bag, order bag etc.) using different
Processing mode, for order bag (such as comprising supplemental characteristic), directly output LED lamp panel module 35 is used after unpacking, for
View data bag, then export according to the model of driving chip, cabling mode of LED lamp panel module 35 etc. on LED lamp panel module 35
Control signal and display data group are shown to LED lamp panel module 35 with realizing image.
It should be noted that in the aforementioned embodiment, it can be gigabit to be communicated with front controller (such as sending card)
PHY, but gigabit PHY, or SerDes interface is not limited only to, can also be other HSSI High-Speed Serial Interfaces, namely Phy chips
Core 3330a, 3330b can be not limited to network differential signal for other differential signal interface modules.Additionally, for the first chip
333, it is also possible to be not integrated into Phy chip cores 3330a, 3330b to come；For the second chip 351, it is also possible to by Signal Booster
353 are integrated into coming, and the circuit of such LED lamp panel module 35 will be significantly simpler, or remove monitoring letter in the second chip 351
Acquisition module 357 is ceased to simplify the second chip 351.
In sum, the embodiment of the present invention is by independent into small by the display driving part of the fpga chip of existing scanning card
Module (the second chip 351 of correspondence) isolated operation, helps to reduce the bandwidth of image processing section, supports that big band is carried, and supports high
Close small spacing screen body；More display data groups (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 means, and scanning in the past blocks compared with LED lamp panel module winding displacement connected mode,
Because the first chip 333 and the second chip 351 can set up separately on scanning card and LED lamp panel module and believe between the two using difference
Number mode is communicated, and can reach reduction winding displacement core number, improves the stability and reliability of transmission, reduces EMI, gentlier
The easy requirement for meeting EMC.In terms of monitoring, by using differential signal transmission mode, can also reduce and be passed using winding displacement at present
Defeated error code, makes monitoring more reliable and more stable.
Finally it is worth mentioning that in other embodiments, it is also possible to which the first chip 333 and the second chip 351 are all provided with
Put on the circuit board where card is scanned and scan the other structures on card 33 and LED lamp panel module 35 and be held essentially constant, its
Certain beneficial effect can be equally reached for example to reduce the volume of scanning card, support big band to carry, support that highly dense small spacing LED shows
The display effect of display screen body and raising screen body.
The above, is only presently preferred embodiments of the present invention, and any formal limitation is not made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when making a little change or modification using the technology contents of the disclosure above
It is the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to technical spirit pair of the invention
Any simple modification, equivalent variations and modification that above example is made, still fall within the range of technical solution of the present invention.
Claims (10)
1. a kind of LED display control system (30), including front controller (31), scanning card (33) and LED lamp panel module
(35), scanning card (33) is connected between the front controller (31) and the LED lamp panel module (35)；Its feature exists
In scanning card (33) includes the first chip (333) for being arranged on first circuit board, LED lamp panel module (35) bag
Include the second chip (351) for setting on the second circuit board and the LED drive circuit (355) for connecting second chip (351)；
Wherein, first chip (333) for receiving and unpack the packet from the front controller (31), to unpack
The view data obtained after the packet processed and the view data after treatment is re-grouped package processed after scheme
As packet is exported and is transmitted in differential signal mode to second chip (351) of the LED lamp panel module (35)；
Second chip (351) for receiving and unpack after the treatment from first chip (35) view data bag and
Described in the view data generation control signal and display data group obtained according to view data bag after the unpacking treatment send to
LED drive circuit (355) carries out display driving and realizes that image shows with the LED plate module (35).
2. LED display control system (30) as claimed in claim 1, it is characterised in that scanning card (33) also includes
The multi-channel network transformer (331a, 331b) on the first circuit board is arranged on, first chip (333) is connected respectively；
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 used to cascade next stage scanning card.
3. LED display control system (30) as claimed in claim 1, it is characterised in that the LED lamp panel module (35) is also
Including the Signal Booster (353) being arranged on the second circuit board and supervisory circuit (357), the Signal Booster
(353) it is connected between second chip (351) and the LED drive circuit (355), supervisory circuit (357) connection
Second chip (351) and the LED drive circuit (355).
4. LED display control system (30) as claimed in claim 1, it is characterised in that the LED lamp panel module (35) is
First chips (333) that are multiple and being connected in parallel to scanning card (35) are with respectively with first chip (333) using poor
Sub-signal mode carries out packet transmission.
5. LED display control system (30) as claimed in claim 1, it is characterised in that first chip (333) is specific
Including：First data input exports modular converter (3331a), the second data input and exports modular converter (3331b), port switching
Module (3332), view data unpack module (3333), memory control module (3334), order group bag and unpack module
(3335), parameter distribution module (3336), image data processing module (3337), first group of bag unpack module (3338) and many
The data input/output module of road first (3339)；
First and second data input exports modular converter (3331a, 3331b) and is respectively used to respective received data packet
Enter row format conversion；
The port handover module (3332) connects the first and second data inputs and exports modular converter (3331a, 3331b) to know
Other up-downgoing data link come complete input and output switching；
Described image data unpack module (3333) and connect the port handover module (3332) with to the institute for view data bag
State that packet is unpacked and the view data after the memory control module (3334) is to unpacking is stored；
The order group bag unpacks module (3335) and is connected to the port handover module (3332) and the parameter distribution module
(3336) unpack obtaining supplemental characteristic with to the packet for order bag between；
The parameter distribution module (3336) connects described image data processing module (3337) and first group of bag unpacks mould
Block (3338) is handed down to described image data with by supplemental characteristic after the unpacking that module (3335) is unpacked from the order group bag
Processing module (3337) and/or first group of bag unpack module (3338)；
Described image data processing mould (3337) connects the parameter distribution module (3336) and the memory control module
(3334) with by the memory control module (3334) read unpack after view data processed and by treatment after
View data is stored by the memory control module (3334) again；
First group of bag unpacks module (3338) connection the parameter distribution module (3336) and the memory control module
(3334) scheme with after the view data after the memory control module (3334) reading process packages and processed
Picture packet exports from the data input/output module of the multichannel first (3339) and will be from the parameter distribution module
(3336) exported from the data input/output module of the multichannel first (3339) after supplemental characteristic group bag.
6. LED display control system (30) as claimed in claim 5, it is characterised 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 bag
(3515)；Second group of bag unpacks module (3513) and connects second data input/output module (3511) and described image
Driver module (3515) is received from first chip (333) with by second data input/output module (3511)
View data bag and unpacked and sent to described image driver module to obtain view data after the treatment of output
(3515), described image driver module (3515) for according to second group of bag unpack module (3513) transmission come figure
As data produce the control signal and the display data group.
7. LED display control system (30) as claimed in claim 6, it is characterised in that second chip (351) is also wrapped
Include monitoring information acquisition module (3517) and the 3rd data input/output module (3519), the monitoring information acquisition module
(3517) connect second group of bag and unpack module (3513), the 3rd data input/output module (3519) connection described the
Two data input/output modules (3511) and for cascading next stage LED lamp panel module；The LED lamp panel module (35) also includes
The supervisory circuit (357) on the second circuit board is arranged on, the LED drive circuit (355) and second chip is connected
(351) the monitoring information acquisition module (3517).
8. LED display control system (30) as claimed in claim 6, it is characterised in that the first data input 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.
9. a kind of LED display control system, including front controller (31), scanning card and LED lamp panel module, the scanning card
It is connected between the front controller (31) and the LED lamp panel module, the LED lamp panel module is same including being arranged on
LED drive circuit (355) on circuit board and connect the LED drive circuit (355) and as multiple LED of display pixel
Lamp；Characterized in that, the scanning card includes the first chip (333) and the second chip that are arranged on same circuit board
(351)；
Wherein, first chip (333) for receiving and unpack the packet from the front controller (31), to unpack
The view data obtained after the packet processed and the view data after treatment is re-grouped package processed after scheme
As packet is exported to second chip (351)；
Second chip (351) for receiving and unpack after the treatment from first chip (35) view data bag and
Control signal and display data group is produced to export and transmit according to the view data that view data bag after the unpacking treatment is obtained
The LED drive circuit (355) to the LED lamp panel module carries out display driving with the realization in the LED plate module
Image shows.
10. LED display control system as claimed in claim 9, it is characterised in that
First chip (333) specifically includes：It is defeated that first data input exports modular converter (3331a), the second data input
Go out modular converter (3331b), port handover module (3332), view data and unpack module (3333), memory control module
(3334), order group bag unpacks module (3335), parameter distribution module (3336), image data processing module (3337), first
Group bag unpacks module (3338) and the data input/output module of multichannel first (3339)；First and second data input is defeated
Go out modular converter (3331a, 3331b) to be respectively used to enter respective received data packet row format conversion；The port switches mould
Block (3332) connects the first and second data inputs output modular converter (3331a, 3331b) to be come with recognizing up-downgoing data link
Complete input and output switching；Described image data unpack module (3333) and connect the port handover module (3332) with to being figure
As the packet of packet is unpacked and view data after the memory control module (3334) is to unpacking
Stored；The order group bag unpacks module (3335) and is connected to the port handover module (3332) and parameter distribution
Unpack obtaining supplemental characteristic with to the packet for order bag between module (3336)；The parameter distribution module
(3336) connection described image data processing module (3337) and first group of bag unpack module (3338) with will from described in
Supplemental characteristic is handed down to described image data processing module (3337) and/or institute after the unpacking of order group bag unpacking module (3335)
State first group of bag and unpack module (3338)；Described image data processing mould (3337) connect the parameter distribution module (3336) and
The memory control module (3334) is entered with reading the view data after unpacking by the memory control module (3334)
Row treatment is simultaneously stored the view data after treatment by the memory control module (3334) again；First group of bag
Unpack module (3338) and connect the parameter distribution module (3336) and the memory control module (3334) with by described
View data after memory control module (3334) reading process packages after being processed view data bag from described many
The data input/output module of road first (3339) exports and will be from the supplemental characteristic group of the parameter distribution module (3336)
The data input/output module of multichannel first (3339) output described in Bao Houcong；
Second chip (351) specifically includes the second data input/output module (3511), second group of bag and unpacks module
And image driver module (3515) (3513)；It is defeated that second group of bag unpacks module (3513) connection second data
Enter output module (3511) and described image driver module (3515) with by second data input/output module
(3511) receive from view data bag after the treatment of first chip (333) output and unpacked to obtain view data biography
Described image driver module (3515) is given, described image driver module (3515) is for according to second group of bag
Unpack view data the generation control signal and the display data group that module (3513) transmission comes；And
Second chip (351) is for 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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| CN108419336A (en) * | 2018-04-09 | 2018-08-17 | 横店集团得邦照明股份有限公司 | A kind of LED lamplight screen control system and its implementation |
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| CN111028719A (en) * | 2019-12-30 | 2020-04-17 | 深圳市洲明科技股份有限公司 | Lamp panel connecting plate and LED display screen |
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| 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 |
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