CN106652891B - Scanning card - Google Patents

Scanning card Download PDF

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Publication number
CN106652891B
CN106652891B CN201611218642.4A CN201611218642A CN106652891B CN 106652891 B CN106652891 B CN 106652891B CN 201611218642 A CN201611218642 A CN 201611218642A CN 106652891 B CN106652891 B CN 106652891B
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CN
China
Prior art keywords
module
image data
packet
chip
group
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CN201611218642.4A
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Chinese (zh)
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CN106652891A (en
Inventor
王伙荣
刘德福
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西安诺瓦电子科技有限公司
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Priority to CN201611218642.4A priority Critical patent/CN106652891B/en
Publication of CN106652891A publication Critical patent/CN106652891A/en
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Publication of CN106652891B publication Critical patent/CN106652891B/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]

Abstract

The present invention proposes a kind of scanning card (30), comprising: the first chip (35) and the second chip (37) being arranged on circuit board (31);First chip (35) be used to receive and unpack image data packet and order packet, according to unpack after the order packet obtained supplemental characteristic to unpack the image data obtained after described image data packet handled and to treated image data re-groups package handled after image data packet export to the second chip (37);Second chip (37) is used to receive and unpack image data packet after the processing from the first chip (35) and is used according to unpacking the image data that image data packet after the processing obtains and generating control signal and display data group and to LED light template die group execute image and show.Further, it is also possible to set up separately the first chip (35) and the second chip (37) on scanning card and LED light template die group.Therefore, the present invention can solve the problem of scanning cassette tape loading capability deficiency and/or scanning card and transmission stability difference between LED light template die group.

Description

Scanning card

Technical field

The present invention relates to the components in field of display technology more particularly to LED display control system.

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, multiple LED boxes are spliced into a LED display.The display effect of LED display directly by The scanning card (or LED display control panel) configured in each LED box determines.In the case where LED box specification determines, The performance parameter of LED display determines substantially, especially in universal driving chip LED display.

With the development of small spacing, the pixel for needing to scan cassette tape load increases, and scans that cassette tape width is limited to be led to not So that big band is carried lower image still can perfectly show;The limitation of scanning card volume size also causes it can not be in smaller spacing It is applied on 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, winding displacement and LED light template die group is mostly dual-in-line connector.

Scanning card Center for architecture part in the related technology is FPGA, and all data receivers are completed inside FPGA and are divided Hair, the processing of image data, the extraction of gradation data, and exported according to different LED box specifications, different driving chip different It shows data and control signal, and is output in the LED light template die group of LED box by signal enhancing output module.

In existing scanning card, FPGA and its matched related device, the driving enhancing of output etc. cause volume to compare Greatly, and Ping Ti producer is needed to provide HUB plate (pinboard), increases the thickness of product, is unfavorable for high density LED display Design.The bandwidth of scanning card is limited can not to support very big band to carry.Universal driving chip is since its is cheap, although using Time it is longer, still by the favor of client;For the LED box using universal driving chip, due to its driving Characteristic needs ceaselessly output gray level data, however the RGB data group of FPGA output is limited, is unable to satisfy display effect requirement Relatively high occasion.In addition, being connected between scanning card and the LED light template die group of LED box by winding displacement, existing signal transmission Mode and connection type have the following problems: 1) each single-ended signal needs to occupy single line core, causes the core quantity of winding displacement It is more, by taking a routine 8 sweeps LED light template die group as an example, if desired two groups of RGB datas, in addition clock signal (CLK), latching letter The signals one such as number (LAT), enable signal (OE), row selection signal (A, B, C) share 12 single-ended signals, add at least one Earth signal at least needs the winding displacement of 13 cores, however is frequently present of some in LED display industry and docks using LED light template die group Enter the core limited amount system of winding displacement, multicore winding displacement is inconvenient;2) since winding displacement core is more, winding displacement and LED light template die group it Between connector contact point it is also more, single core is obstructed or poor contact will lead to that display is abnormal, and this reason is brought Failure account for significant proportion in LED display application failure;3) TTL signal because signal fading transmission apart from limited, usually not More than 2 meters, some applications need longer transmission range, thus TTL signal is difficult to be competent at;And 4) winding displacement transmits TTL Signal causes signal radiation larger, this is to LED display 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 scanning card.

Specifically, the embodiment of the present invention propose a kind of scanning card, be suitable for the application of in LED display control system with The connection of LED light template die group.The scanning card includes: the first chip and the second chip of setting on circuit boards.First core Piece is used to receive and unpack image data packet and orders packet, orders the supplemental characteristic obtained after packet to unpacking institute according to unpacking is described State that the image data obtained after image data packet is handled and image data re-groups package after obtaining processing to treated Image data packet is exported to second chip.Second chip is for receiving and unpacking the processing from first chip Afterwards image data packet and control signal and display are generated according to the image data that image data packet after the processing obtains is unpacked Data group shows to LED light template die group execution image and is used.

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 respective received image data packet and life Packet is enabled to format;The port switching module connects the first and second data input and output conversion modules to identify up and down Row data link switches to complete input and output;Described image data unpack module and connect the port switching module with to being connect Image data packet is received unpack and store the image data after unpacking by the memory control module;The life Enable group packet unpack module be connected between the port switching module and the parameter distribution module with to received command packet into Row unpacks;The parameter distribution module connection described image data processing module and first group of packet unpack module will come from The order group packet unpacks supplemental characteristic after the unpacking of module and is handed down to described image data processing module and/or first group described Packet unpacks module;Described image data processing mould connects the parameter distribution module and the memory control module to pass through Image data after stating memory control module reading unpacking handle and image data passes through described deposit again by treated Reservoir control module is stored;First group of packet unpacks module and connects the parameter distribution module and memory control Module with packaged by the image data after the memory control module reading process handled after image data packet From first data input/output module of multichannel output and will be after the supplemental characteristic group packet of the parameter distribution module It is exported 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 first data input and output Module and described image driver module by first data input/output module to be received from first chip It supplemental characteristic and is carried out after image data packet and group packet after the processing of one of described first data input/output module of multichannel output It de-packaging operation and is unpacked the image data obtained after the processing after image data packet and sends described image display to and driven Dynamic model block, described image driver module be used for according to second group of packet unpack module transmission come image data generation institute State control signal and the display data group.

In one embodiment of the invention, first chip further includes the first Phy chip core and the 2nd Phy chip Core is separately connected the first data input and output conversion module and the second data input and output conversion module;It is described to sweep Retouching card further includes the first network transformer and the second network transformer being arranged on the circuit board, is separately connected described first Phy chip core and the 2nd Phy chip core.

In one embodiment of the invention, the scanning card further includes memory, and the memory is arranged described On circuit board or it is integrated in first chip interior.

In one embodiment of the invention, second chip further includes third data input/output module and monitoring letter Breath obtains module;The third data input/output module connects second data input/output module and is used to cascade next The second chip of grade;The monitoring information obtains module and connects second group of packet unpacking module to obtain the LED light template die group Monitoring information and send to second group of packet unpack module package after through by second data input/output module pass It send to first chip.

In addition, another embodiment of the present invention provides a kind of scanning card, be adapted to be attached to front controller and LED light template die Between group.The scanning card includes: the chip of setting on circuit boards;The chip is for receiving and unpacking from the front end The image data packet of controller and order packet, according to unpacking the supplemental characteristic that obtains after the order packet to unpacking described image number According to the image data obtained after packet handled and to treated image data re-groups package handled after image data Packet is exported in a manner of differential signal to the LED light template die group, so that the LED light template die group is according to picture number after the processing Display driving is carried out according to contract for fixed output quotas life control signal and display data group and then realization image is shown.

In one embodiment of the invention, the 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 solution Packet module, parameter distribution module, image data processing module, group packet unpack module and multichannel data input/output module;Institute The first and second data input and output conversion modules are stated to be respectively used to carry out lattice to respective received image data packet and order packet Formula conversion;The port switching module connects the first and second data input and output conversion modules to identify uplink and downlink data link To complete input and output switching;Described image data unpack module and connect the port switching module to received image data Packet unpack and stored by the memory control module to the image data after unpacking;The order group packet unpacks Module is connected between the port switching module and the parameter distribution module to unpack to received command packet;It is described Parameter distribution module connects described image data processing module and described group of packet unpacks module will come from the order group packet solution Supplemental characteristic is handed down to described image data processing module after the unpacking of packet module and/or described group of packet unpacks module;The figure As data processing mould connects the parameter distribution module and the memory control module to pass through the memory control module Image data after reading unpacking handle and image data is carried out by the memory control module again by treated Storage;Described group of packet unpacks module and connects the parameter distribution module and the memory control module to pass through the memory Image data after control module reading process packages handled after image data packet from the multichannel data input it is defeated Out module output and by after the supplemental characteristic group packet of the parameter distribution module from the multichannel data input and output mould Block output.

In one embodiment of the invention, the multichannel data input/output module is 100,000,000 network interface modules, gigabit Network interface module or LVDS interface module.

In one embodiment of the invention, the chip further includes the first Phy chip core and the 2nd Phy chip core, is divided The first data input and output conversion module and the second data input and output conversion module are not connected;The scanning card is also Including the first network transformer and the second network transformer being arranged on the circuit board, it is separately connected the first Phy core Piece core and the 2nd Phy chip core.

From the foregoing, it will be observed that the embodiment of the present invention passes through the scanning card scheme proposed in this new LED display control system, The display driving part that existing scanning blocks upper FPGA is divided into parallel little module isolated operation by the volume for reducing scanning card, Facilitate the bandwidth of reduction image processing section, supports that band carries greatly, the highly dense small spacing screen body of support;And more displays can be exported It is bad to solve the problems, such as that existing scanning is stuck in display effect in universal driving chip LED display, improves refresh rate for data group And gray scale, achieve the purpose that improve LED display display effect;And by using new transmission mode, block with pervious scanning Compared with LED light template die group winding displacement connection type, adopted between present first chip and the second chip in LED light template die group With the interface of difference, it can achieve and reduce winding displacement number, improve the stability and reliability of transmission, reduce EMI, it is fuller The requirement of sufficient EMC.

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 related technology.

Fig. 2 is the structural schematic diagram for being relevant to a kind of scanning card of the embodiment of the present invention.

Fig. 3 is the schematic diagram of internal structure of the first chip shown in Fig. 2.

Fig. 4 is the schematic diagram of internal structure of the second chip shown in Fig. 2.

Fig. 5 is a kind of LED display control system configuration diagram for being relevant to the embodiment of the present invention.

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 scanning card scheme, to solve existing LED display control The problem of system, reduces the volume of scanning card, supports that band carries, supports highly dense small spacing screen body greatly;It solves simultaneously existing Scanning is stuck in the problem that display effect is bad in universal driving chip LED display, improves the display effect of screen body;And pass through Using new transmission mode, reach and reduce winding displacement number, improve the stability and reliability of transmission, reduces EMI, more easily reach To the requirement of EMC.

As shown in Fig. 2, the scanning card 30 of the present embodiment includes: that circuit board 31 and the network being arranged on circuit board 31 become Depressor 33a, 33b, the first chip 35, memory 36 and the second chip 37.Wherein, the first chip 35 is connected to network transformer Between 33a, 33b and the second chip 37, memory 36 connects the first chip 35;And second chip 37 can also even cascade it is another One the second chip.Herein it should be noted that " first " and " second " in the name of the first chip and the second chip is only Convenient purpose is described, is not intended to limit the invention;Memory 36 can be the dynamic RAMs such as SDRAM.Furthermore net Network transformer 33a, 33b can also be substituted for other circuits with functions such as signal shaping, enhancing and isolation.

Fig. 3 shows the schematic diagram of internal structure of first chip 35 of the present embodiment.As shown in figure 3, the first chip 35 is main Complete the reception, forwarding, image data and the processing of supplemental characteristic etc. of data (such as image data, order data etc.), packet It includes: two-way Phy ((Physical Layer, physical layer)) chip core 350a, 350b, two paths of data input and output conversion module 351a, 351b, port switching module 352, image data unpack module 353, memory control module 354, order group packet and unpack Module 355, parameter distribution module 356, image data processing module 357, group packet unpack module 358 and at least all the way (such as Three tunnels) data input/output module 359.

Wherein, two-way Phy chip core 350a, 350b passes through network transformer 33a respectively, and 33b is mainly and front controller Sending and receiving for differential signal such as gigabit network data is completed in connection.Two paths of data input and output conversion module 351a, 351b It is separately connected Phy chip core 350a, 350b, is mainly completed Phy chip core 350a, the inputoutput data of 350b is converted to Inside needs data format, namely carries out Data Format Transform.Port switching module 352 connects two paths of data input and output conversion Module 351a, 351b complete the input and output switching of cable port mainly for identifying uplink and downlink data link.Picture number According to 353 connectivity port switching module 352 of module and memory control module 354 is unpacked, main completion is (typical to image data packet Ground include field sync signal data and display data such as RGB data) parsing and by memory control module 354 will solve Image data after analysis is stored to external memory such as memory 36.Memory control module 354 mainly completes bus arbitration And function of data distribution, for realizing the data access to memory 36.Order group packet unpacks the switching of 355 connectivity port of module Module 352 and parameter distribution module 356, the main unpacking for completing the order packet that front controller issues obtain supplemental characteristic and send To parameter distribution module 356 and the data group packet for needing front controller in case sending.Parameter distribution module 356 is mainly used Module 358 for example is unpacked to control LED light plate module to image data processing module 357 and group packet in issuing various parameters data Display, specifically, the various parameters data of the lower section of parameter distribution module 356 are for example comprising image data processing module 357 Driving chip type (PWM type driving chip or universal driving chip) in required LED light template die group, the viewing area with load Domain size, output display data (such as RGB data) always group number and LED light template die group scanning mode (such as 8 sweep, 16 sweep, 32 Sweep) and rear end LED light template die group needed for supplemental characteristic as wide high, the scanning number of the pixel of LED light template die group, scanning decoding Mode, driving method, data group number and cabling information etc..It 357 Connecting quantity distribution module 356 of image data processing module and deposits Reservoir control module 354, the main rearrangement for completing image data, correction, gray scale extraction etc. handle and pass through memory and control Storage of the module 354 to image data after the reading and processing of image data, wherein the rearrangement of image data typically refers to basis Driving chip type in LED light template die group is that PWM type driving chip or universal driving chip to carry out image data Adjustment, and typically data rearrangement be according to the above-listed driving chip of rear end LED light template die group (such as universal driving chip or PWM type driving chip) needed for data format and LED lamp panel cabling information etc. carry out gradation data position rearrange and spelled Connect the operation such as combination;Correction e.g. inverse gamma correction, gamma correction or other correction such as chromaticity corrections;Gray scale extracts for example Be Bit separation even Bit optimization is carried out to image data, and typically gray scale extracts be gradation data after correction process according to Every Bit carries out lock out operation, in a manner of being transformed into gradation data and use different realization weights according to different Bit.Group packet 358 Connecting quantity distribution module 356 of module, memory control module 354 and data input/output module 359 are unpacked, it is main complete At image data after processing is read out from memory 36 according to configuration parameter and according to corresponding format group packet and is passed through Data input/output module 359 is sent, and complete back packet connect packet and forwarding.Each data input/output module 359 are used to be attached with the second chip 37 of rear class.It should be noted that memory 36 can also be integrated into the first chip 35 inside, to reduce the pin of chip.

Fig. 4 shows the schematic diagram of internal structure of second chip 37 of the present embodiment.As shown in figure 4, the second chip 37 is main It completes to receive the image data packet of first chip 35 output and carry out driving to show, in addition it can be used to collect LED lamp panel Some monitoring informations in mould group simultaneously return to first chip 35.Between the second chip 37 and the first chip 35, it can make It is defeated with the data input in 100,000,000 network interfaces, gigabit network interface, LVDS interface or other coffrets namely the first chip 35 Module 359 can be 100,000,000 network interface modules, kilomega network interface module, LVDS interface module or other coffret modules out. More specifically, second chip 37 includes: data input/output module 371, group packet unpacks module 373, image is shown in Fig. 4 Show that drive module 375, monitoring information obtain module 377 and data input/output module 379.Data input/output module 371 For being attached with the first chip 35, data input/output module 379 connect data input/output module 379, be used to and its He cascades the second chip 37.Data input/output module 371,379 is typically to input with the data in the first chip 35 The structure having the same of output module 359.Group packet unpacks module 373 and connects data input/output module 371, mainly passes through data Input/output module 371 is completed the communication with first chip 35 and is completed to the data packet inputted from first chip 35 Unpack and complete the group packet function for being sent to the data of first chip 35.375 connection group packet solution of image driver module Packet module 373, it is main complete will to need image data to be shown according to LED light template die group design requirement (including cabling mode, The difference of driving chip type etc.) it carries out showing that data group is shown with control signal to LED needed for different drivings, namely output Target LED light template die group in screen shows that display data group herein is, for example, multiple RGB data groups to complete image, control Signal is, for example, clock signal (CLK), latch signal (LAT), enable signal (OE), row selection signal (A, B, C) etc..Monitoring letter Breath obtains 379 connection group packet of module and unpacks module 373, mainly provides some control interfaces, completes the prison to LED light template die group Control function, the monitoring such as temperature, voltage, runing time including LED light template die group and the storage of LED light template die group correction data And readback.

It is described below in conjunction with the course of work of the Fig. 2 to Fig. 4 to the scanning card 30 of the present embodiment:

Data packet (image data packet and/or order packet etc. data packets) by certain all the way Phy chip core 350a (or 350b) into After entering, internal required data format is converted to by data input and output conversion module 351a (or 351b) first, by end After mouth switching module 352: 1) for image data packet, then unpacking module 353 by image data and complete solution packet function and by depositing Reservoir control module 354 is stored into external memory such as memory 36, and image data processing module 357 passes through memory control Molding block 354 is then stored into memory 36 after reading image data completion processing in memory 36, is solved finally by a group packet It is exported after being formatted after image data set packet by the output of data input/output module 359 after 358 pairs of packet module processing To the second chip 37;2) order is wrapped, then obtains supplemental characteristic after order group packet unpacks the unpacking of module 355 and passes through parameter point Hair module 356 is issued to modules such as image data processing module 357 and uses for modules, relevant supplemental characteristic Module 358 is unpacked by a group packet and is handed down to the second chip 37 via data input/output module 359.

After second chip 37 receives the data packet from the first chip 35, it is unpacked and is sent to image display and is driven Dynamic model block 375.Image driver module 375 is according to different Packet types (image data packet, order packet etc.) using different Processing mode wraps (such as including supplemental characteristic) for order, the use of LED light template die group is directly exported after unpacking, for image Data packet then controls signal according to outputs such as the cabling modes of model, LED light template die group of driving chip in LED light template die group Realize that image is shown to LED light template die group with display data group.

It is aobvious using the LED of the first chip 35 and the second chip 37 shown in Fig. 3 and Fig. 4 for the embodiment of the present invention referring to Fig. 5 The structural schematic diagram of display screen control system.As shown in figure 5, LED display control system 60: front controller 61, scanning card 63 With LED light template die group 65.

Wherein, front controller 61 can be the sending card of synchronous LED display screen control system, asynchronous LED display screen control The Asynchronism Card of system processed.

Scanning card 63 includes two-way network transformer 33a, 33b, 35 and of the first chip being arranged on same circuit board Memory 36;Network transformer 33a, 33b and memory 36 are separately connected the first chip 35, wherein network transformer 33a all the way Front controller 61 is connected, another way network transformer 33b is for cascading next stage scanning card.Furthermore due to the first chip 35 Multichannel data input/output module 359 is configured in (as shown in Figure 3), thus it is equivalent to and is provided with HUB plate (pinboard) Interface Expanding function.In other words, scanning card 63 shown in fig. 5 can also be referred to as to have additional the first chip to a certain extent 35, the HUB plate of memory 36 and network transformer 33a, 33b.

LED light template die group 65 includes the second chip 37 being arranged on same circuit board, signal enhancing module 651, LED Driving circuit 653 and monitoring circuit 655.Wherein, the second chip 37 connection scanning blocks under the first chip 35 and cascade on 63 Second chip of level-one;Signal enhancing module 651 is connected between the second chip 37 and LED drive circuit 653, is, for example, 74HC245 family chip;LED drive circuit 653 includes that row selection chip and column driving chip are (such as well-known universal Driving chip), it is connect with the LED light (as display pixel) being arranged on same circuit board, to control the bright dark shape of LED light State realizes that image is shown in turn;Monitor the monitoring information acquisition mould that circuit 655 connects LED drive circuit 653 and the second chip 37 Block 377 (referring to fig. 4), for example including MCU, the various monitoring informations such as winding displacement that can obtain LED light template die group 65 is examined Survey result, point inspection data, temperature, voltage etc..

In addition, front controller 61 and scanning card 63 are communicated by kilomega network, scanning card 63 and LED light in Fig. 5 It is communicated between template die group 65 by 100,000,000 nets or other signaling interfaces, between LED light template die group 65 and LED light template die group It can also be cascaded.Or first chip 35 and second chip 37 the two chips be all placed in LED light template die group 65, pass through LVDS or the communication of other differential signals.

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 350a, 350b can be not limited to network differential signal for other differential signal interface modules.In addition, for the first chip 35, Phy chip core 350a, 350b can also be integrated into and;It, can also be by signal enhancing module for the second chip 37 651 are integrated into, and the circuit of such LED light template die group 65 will be significantly simpler, or remove monitoring letter in the second chip 37 Breath obtains module 377 to simplify the second chip 37.

In conclusion the embodiment of the present invention passes through the scanning card scheme proposed in this new LED display control system, The display driving part that existing scanning blocks upper FPGA is divided into parallel little module isolated operation by the volume for reducing scanning card (corresponding first chip can connect multiple second chips), facilitates the bandwidth for reducing image processing section, supports that band carries greatly, supports Highly dense small spacing screen body;And more displays data group (such as multiple RGB data groups) can be exported, the existing scanning of solution is stuck in logical With the bad problem of display effect in type driving chip LED display, refresh rate and gray scale are improved, raising LED display is reached The purpose of display effect;And by using new transmission mode, with pervious scanning card and LED light template die group winding displacement connection type It compares, the interface of difference is used between present first chip 35 and the second chip 37 in LED light template die group, can achieve Winding displacement number is reduced, the stability and reliability of transmission are improved, EMI is reduced, more easily meets the requirement of EMC.

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 scanning blocks (30), it is suitable for the application of in LED display control system to be connect with LED light template die group;Its feature exists In the scanning card (30) includes: the first chip (35) and the second chip (37) being arranged on circuit board (31);Described first Chip (35) is used to receive and unpack image data packet and order packet, according to the supplemental characteristic pair obtained after the unpacking order packet The image data obtained after unpacking described image data packet is handled and image data re-groups package to obtain to treated Image data packet is exported to second chip (37) after processing;Second chip (37) is for receiving and unpacking from described Image data packet and the image data obtained according to image data packet after the unpacking processing after the processing of first chip (35) Generation control signal and display data group are shown to LED light template die group execution image to be used: wherein first chip (35) it specifically includes: the first data input and output conversion module (351a), the second data input and output conversion module (351b), end Mouth switching module (352), image data unpack module (353), memory control module (354), order group packet unpacking module (355), parameter distribution module (356), image data processing module (357), first group of packet unpack module (358) and multichannel the One data input/output module (359);
The first and second data input and output conversion module (351a, 351b) is respectively used to respective received image data Packet and order packet format;
The port switching module (352) connects the first and second data input and output conversion modules (351a, 351b) to identify Uplink and downlink data link switches to complete input and output;
Described image data unpack module (353) connect the port switching module (352) with to received image data packet into Row is unpacked and is stored by the memory control module (354) to the image data after unpacking;
The order group packet unpacks module (355) and is connected to the port switching module (352) and the parameter distribution module (356) to be unpacked to received command packet between;
Parameter distribution module (356) connection described image data processing module (357) and first group of packet unpack module (358) supplemental characteristic after the unpacking for coming from order group packet unpacking module (355) is handed down to described image data processing Module (357) and first group of packet unpack module (358);
Described image data processing mould (357) connects the parameter distribution module (356) and the memory control module (354) Handle and will treated image data to read the image data after unpacking by the memory control module (354) It is stored again by the memory control module (354);
First group of packet unpacks module (358) and connects the parameter distribution module (356) and the memory control module (354) with packaged by the image data after the memory control module (354) reading process handled after image Data packet exports from first data input/output module of multichannel (359) and will come from the parameter distribution module (356) Supplemental characteristic group packet after from first data input/output module of multichannel (359) export.
2. scanning card as described in claim 1, which is characterized in that second chip (37) specifically includes the input of the second data Output module (371), second group of packet unpack module (373) and image driver module (375);
Second group of packet unpacks module (373) connection first data input/output module (371) and described image is shown Drive module (375) by first data input/output module (371) to be received from the described of first chip (35) It supplemental characteristic and is carried out after image data packet and group packet after the processing of one of first data input/output module of multichannel (371) output It de-packaging operation and is unpacked the image data obtained after the processing after image data packet and sends described image display to and driven Dynamic model block (375), described image driver module (375) be used for according to second group of packet unpack module (373) transmission come Image data generate the control signal and the display data group.
3. scanning card (30) as claimed in claim 2, which is characterized in that first chip (35) further includes the first Phy core Piece core (350a) and the 2nd Phy chip core (350b), be separately connected the first data input and output conversion module (351a) and The second data input and output conversion module (351b);The scanning card (30) further includes being arranged on the circuit board (31) First network transformer (33a) and the second network transformer (33b), be separately connected the first Phy chip core (350a) and The 2nd Phy chip core (350b).
4. scanning card (30) as claimed in claim 2 or claim 3, which is characterized in that the scanning card (30) further includes memory (36), and the memory (36) is arranged on the circuit board (31) or is integrated in the first chip (35) inside.
5. scanning card (30) as claimed in claim 2, which is characterized in that second chip (37) further includes that third data are defeated Enter output module (379) and monitoring information obtains module (377);Described in third data input/output module (379) connection Second data input/output module (371) simultaneously is used to cascade the second chip of next stage;The monitoring information obtains module (377) even It connects second group of packet and unpacks module (373) to obtain the monitoring information of the LED light template die group and send to second group of packet It unpacks after module (373) package through being sent to first chip by second data input/output module (371) (35)。
6. a kind of scanning blocks (63), it is adapted to be attached between front controller (61) and LED light template die group (65);Its feature exists In the scanning card (63) includes: the chip (35) of setting on circuit boards;The chip (35) comes from for receiving and unpacking The image data packet and order packet of the front controller (61), the supplemental characteristic obtained after being wrapped according to the unpacking order are to solution The image data obtained after packet described image data packet is handled and image data re-groups package everywhere to treated Image data packet is exported in a manner of differential signal to the LED light template die group (65) after reason, for the LED light template die group (65) Raw control signal is contracted for fixed output quotas according to image data after the processing and display data group carries out display and drives and then realize that image is shown: Wherein the chip (35) specifically includes: the first data input and output conversion module (351a), the second data input and output conversion Module (351b), port switching module (352), image data unpack module (353), memory control module (354), order group Packet unpack module (355), parameter distribution module (356), image data processing module (357), group packet unpack module (358) and Multichannel data input/output module (359);
The first and second data input and output conversion module (351a, 351b) is respectively used to respective received image data Packet and order packet format;
The port switching module (352) connects the first and second data input and output conversion modules (351a, 351b) to identify Uplink and downlink data link switches to complete input and output;
Described image data unpack module (353) connect the port switching module (352) with to received image data packet into Row is unpacked and is stored by the memory control module (354) to the image data after unpacking;
The order group packet unpacks module (355) and is connected to the port switching module (352) and the parameter distribution module (356) to be unpacked to received command packet between;
Parameter distribution module (356) connection described image data processing module (357) and described group of packet unpack module (358) Supplemental characteristic after the unpacking for coming from order group packet unpacking module (355) is handed down to described image data processing module (357) and described group of packet unpacks module (358);
Described image data processing mould (357) connects the parameter distribution module (356) and the memory control module (354) Handle and will treated image data to read the image data after unpacking by the memory control module (354) It is stored again by the memory control module (354);
Described group of packet unpack module (358) connect described parameter distribution module (356) and the memory control module (354) with Packaged after being handled by the image data after the memory control module (354) reading process image data packet from Multichannel data input/output module (359) output and the supplemental characteristic group that the parameter distribution module (356) will be come from The output of multichannel data input/output module (359) described in Bao Houcong.
7. scanning card (63) as claimed in claim 6, which is characterized in that the multichannel data input/output module (359) is 100000000 network interface modules, kilomega network interface module or LVDS interface module.
8. scanning card (63) as claimed in claim 6, which is characterized in that the chip (35) further includes the first Phy chip core (350a) and the 2nd Phy chip core (350b) is separately connected the first data input and output conversion module (351a) and described Second data input and output conversion module (351b);The scanning card (63) further includes the be arranged on the circuit board (31) One network transformer (33a) and the second network transformer (33b) are separately connected the first Phy chip core (350a) and described 2nd Phy chip core (350b).
CN201611218642.4A 2016-12-26 2016-12-26 Scanning card CN106652891B (en)

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CN102025983A (en) * 2010-09-19 2011-04-20 北京邮电大学 Data transmission processing method and system and corresponding light-emitting diode (LED) display system
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