CN106782295B - LED box - Google Patents
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- CN106782295B CN106782295B CN201611220624.XA CN201611220624A CN106782295B CN 106782295 B CN106782295 B CN 106782295B CN 201611220624 A CN201611220624 A CN 201611220624A CN 106782295 B CN106782295 B CN 106782295B
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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)
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Abstract
The present invention proposes a kind of LED box, including scanning card and connects the multiple LED light template die groups for scanning card.The scanning card includes image display control chip；Described image display control chip carries out classification processing for receiving externally input data packet and unpack, to the data obtained after unpacking and the image data obtained after classification processing correspond to the scanning cassette tape carries the image interception of area size, correction process, gray scale point discrete data are reset to generate image display drive signals and be grouped processing to described image display drive signals to export and be grouped image display drive signals at least all the way (such as multichannel) to the multiple LED light template die group.The present invention can reach the purpose of reduction scanning card body product and raising LED display body display effect by that will scan card function chip as best one can.
Description
Technical field
The present invention relates to field of display technology more particularly to LED display control systems.
Background technique
With the development of technology and social progress, LED display in daily life using more and more extensive, commonly use
LED display control system mainly include sequentially connected video source, video processor, sending card, scanning card and LED aobvious
Display screen, and scan general cooperation HUB plate (also referred to as pinboard) of card and be mounted in LED box, while the HUB mouth on HUB plate can lead to
It crosses winding displacement or the multiple LED light template die groups of row's needle connection carries out cascade and show, thus constitute a LED box, multiple LED
Cabinet is spliced into a LED display again.
With the development of indoor small space distance LED display screen, the pixel for needing to scan cassette tape load is more and more, and due to sweeping
Cassette tape tolerance system is retouched, leads to not realize finer and smoother display effect with image when carrying in the case that big, while scanning card body product
The limitation of size apply overwhelming majority scanning khaki can not on the LED display of smaller spacing.
At the same time, existing LED display lights needs by scanning card output image display drive signals, then passes through
HUB plate carries out data grouping and signal driving enhancing, then is connected to LED lamp panel by winding displacement or other connectors by HUB plate
Mould group is lighted, while some chips or functional module with monitoring function in LED light template die group are also required to pass through
Winding displacement and HUB plate are communicated with scanning card, monitoring information are passed back to scanning card end to realize, then pass back by scanning card
User is showed to upper computer software.
However, due to that need to have more complete functionality, scanning card needs logical from front end sending card in existing scanning card
Cross network receive data, while will by the HUB interface of standard export image display drive signals, in this way add FPGA and its
Matched related device, driving chip of output signal enhancing etc., the volume for causing scanning to block is bigger, so that it is not
Application suitable for small space distance LED display screen；Meanwhile the bandwidth that scans card is limited and be difficult to that very big band can not be supported to carry；This
Outside, in existing LED display control system, the design of HUB plate connects in the failure problems occurred with LED light template die group to be accounted for
A large portion ratio, is mainly reflected on HUB plate that complicated numerous signals distribution are different with winding displacement length to be caused to drive
Not caused enough the interference problem of ability is than more serious；Furthermore since each LED light template die group needs multiple groups to show data (R, G, B
Data) and one group of control signal (clock signal clk, latch signal LAT, enable signal OE and row selection signal A, B, C etc.),
It is also possible to having one group of monitoring module communication interface, will have many signals when with more data group is carried in this way is needed
Rearrangement and driving are wanted, often will appear interface error or signal routing un-reasonable phenomenon in the process, cause to show
Exception or display effect are affected；In addition, general HUB plate can be attached by winding displacement and LED light template die group, and
Image display drive signals required for LED light template die group (display data signal and control signal) need to be scanned card with
Multiple drive power just can guarantee the normal transmission of signal on HUB plate, and multiple drive power can often introduce signal distortion and delay etc.
Uncontrollable problem can largely effect on the normal display effect of LED display in this way, and enhance driving and will increase signal radiation,
Cause product that can acquire a certain degree of difficulty by EMC certification.
Summary of the invention
Therefore, to overcome defect and deficiency in the prior art, the present invention proposes a kind of LED box.
Specifically, a kind of LED box that the embodiment of the present invention proposes including scanning card and connects the multiple of the scanning card
LED light template die group.The scanning card includes image display control chip；Described image display control chip is external defeated for receiving
The data packet entered and unpacking, to the data that are obtained after unpacking carry out classification processing and by the image data obtained after classification processing into
The image interception of the corresponding scanning cassette tape load area size of row, correction process, gray scale point discrete data are reset to generate image
Display drive signals and to described image display drive signals be grouped processing with export at least all the way grouping image show
Driving signal is to the multiple LED light template die group.
In one embodiment of the invention, described at least grouping image display drive signals are multichannel all the way, and described
It includes identical control signal group and different display data groups that multichannel, which is grouped image display drive signals,.
In one embodiment of the invention, the control signal group include clock signal, latch signal, enable signal and
Row selection signal；The display data group includes RGB data group.
In one embodiment of the invention, the multiple LED light template die group, which is concatenated together, constitutes a string of LED light template dies
Group is to receive the image display drive signals of grouping all the way that described image display control chip exports.
In one embodiment of the invention, described image display control chip include two-way physical layer transceiver IP kernel,
Data resolution module, image processing module, image-driven module and multichannel are grouped drive module；The two-way physical layer transceiver
One of device IP kernel is for receiving the data packet and unpacking；The data resolution module is used to divide the data that unpacking obtains
The image data obtained after classification processing is simultaneously carried out described image interception to obtain truncated picture data by class processing；The figure
As processing module is used to be corrected truncated picture data processing, gray scale separation and the data rearrangement to obtain everywhere
Image data after reason；Described image drive module is used to generate image display drive signals according to image data after the processing；
And the multichannel grouping drive module is respectively used to carry situation to described image display drive signals according to the rear end band of oneself
It is grouped processing and driving enhancing, to generate and export at least grouping image display drive signals all the way.
In one embodiment of the invention, described image display control chip is also integrated with communication interface modules and monitoring
Data acquisition module is all connected with the data resolution module；The communication interface modules is used for and the multiple LED light template die group
Serial communication is carried out, the monitoring data obtains module and is used to obtain the monitoring data that the multiple LED light template die group is collected.
In one embodiment of the invention, the LED light template die group includes serioparallel exchange interface circuit, LED driving electricity
Road, LED light array, monitoring circuit and nonvolatile memory, the LED drive circuit connect the serioparallel exchange interface electricity
Road, the LED light array and the monitoring circuit, the monitoring circuit are also connected with the serioparallel exchange interface circuit；The string
And conversion interface circuit is for receiving the grouping image display drive signals all the way and carrying out serioparallel exchange with by serial differential
Signal is converted into parallel TTL signal and send to the LED drive circuit to perform image display with LED light array described in drive control；
The monitoring circuit is used to monitoring data being transmitted to institute in the form of serial differential signals by the serioparallel exchange interface circuit
The monitoring data stated in the described image display control chip on scanning card obtains module；The nonvolatile memory with
The communication interface modules in described image display control chip on the scanning card carries out serial communication.
In one embodiment of the invention, the LED light template die group includes serioparallel exchange interface circuit, LED driving electricity
Road, LED light array and monitoring circuit, and the LED drive circuit connects the serioparallel exchange interface circuit, the LED light
Array and the monitoring circuit；The grouping image display drive signals are simultaneously for receiving all the way for the serioparallel exchange interface circuit
Serioparallel exchange is carried out to send to the LED drive circuit so that serial differential signals are converted into parallel TTL signal with drive control institute
LED light array is stated to perform image display；The monitoring circuit includes microprocessor and nonvolatile memory and passes through described micro-
Processor carries out serial communication with the communication interface modules in the described image display control chip on the scanning card to be used for
Upload monitoring data.
In one embodiment of the invention, the scanning card further includes with described image display control chip positioned at same
The first network interface, first network transformer, the second network interface and the second network transformer on block circuit board；First network interface passes through
One of described two-way physical layer transceiver IP kernel in the first network transformer connection described image display control chip,
Second network interface connects the two-way physical layer in described image display control chip by second network transformer
Transceiver IP kernel another.
In addition, a kind of LED box that another embodiment of the present invention proposes, including scanning card and connects the more of the scanning card
A LED light template die group.The scanning card includes image display control chip；Described image display control chip is for receiving outside
The data packet of input and the multichannel grouping image display drive signals point that serial differential signals form is generated according to the data packet
Supplementary biography is transported to the multi-string LED lamp plate mould group being made of the multiple LED light template die group and is performed image display；The multichannel packet diagram
As display drive signals include identical control signal group and different display data groups；And the control signal group is for controlling
Make the row selection circuit that LED light array is connected in the multi-string LED lamp plate mould group and column drive circuit and including clock signal, lock
Signal, enable signal and row selection signal are deposited, the display data group is used to drive the column of corresponding string LED light template die group
Driving circuit.
From the foregoing, it will be observed that the embodiment of the present invention can reduce the body of scanning card by that will scan card function chip as far as possible
Product, can be effective the problems such as can also supporting the application of small spacing screen body, while avoid multiple drive power and the wiring of driving signal
Problem of the user on design HUB is reduced, reduces the threshold of user's application, and use the differential signals such as LVDS to export can also be with
The stability and reliability of rear class transmission are improved, while the scanning of chip is stuck in the advantage in terms of reducing EMI, allows to more
Effectively reach the EMC requirement of client.
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 structural schematic diagram for being relevant to a kind of scanning card of the embodiment of the present invention.
Fig. 2 its be using a kind of LED display control system that card is scanned shown in Fig. 1 configuration diagram.
Fig. 3 is the configuration diagram using a kind of LED box for scanning card shown in Fig. 1.
Fig. 4 is that can carry out a kind of matching used module diagram of LED light template die group with scanning card shown in Fig. 1.
Fig. 5 is the specific structure of LED drive circuit and its LED light with determinant arrangement in LED light template die group shown in Fig. 4
The connection relationship diagram of array.
Fig. 6 is the module diagram that matching used another LED light template die group can be carried out with scanning card shown in Fig. 1.
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 are proposed by scanning card function chip as far as possible, to solve existing LED display
Signal transmission and HUB routing problem in control system, while reducing the volume of scanning card, it supports bigger band to carry, supports small
Away from screen body, or even solve that existing scanning is stuck in cascade in terms of signal processing and the signal stabilization in multistage transmission and reliability is asked
Topic reduces EMI, the more efficient EMC requirement for reaching client.
It is a kind of structural schematic diagram of scanning card of the embodiment of the present invention referring to Fig. 1.As shown in Figure 1, the present embodiment
Scanning card 10 includes: data imput output circuit 11, image display control chip 13 and memory 15, data input and output electricity
Road 11 and memory 15 are respectively connected to image display control chip 13；Image display control chip 13 herein, which is one, to be compiled
Journey logical device chip or ASIC (Application Specific Integrated Circuits, a dedicated integrated electricity
Road) chip, and preferably asic chip, it can simplify the complexity that user uses image display control chip 13 in this way.
Wherein, data imput output circuit 11 is for example including network interface 111a, 111b and network transformer 113a, 113b；
Wherein, for network interface 111a by network transformer 113a connection image display control chip 13, network interface 111b passes through network transformer
113b connection image display control chip 13, so that two paths of data transmission channel is constituted, wherein data transmission channel is used for all the way
Command parameter packet and image data packet that connection front controller (such as sending card) is issued with receiving front-end controller and/or on
Monitoring data etc. is passed to front controller etc., another way data transmission channel is for cascading next stage scanning card to forward front end to control
Command parameter packet and image data packet and/or forwarding rear class scanning card that device processed issues are uploaded to the monitoring data of front controller
Deng.The content of command parameter packet herein is for example comprising column driving chip type (PWM type driving chip or universal driving core
Piece), band carries display area size, and number, the scanning mode (example of LED light template die group are always organized in output display data (such as RGB data)
Such as 8 sweep, 16 sweep, 32 sweep) and wide high, the scanning number of pixel of LED light template die group, scanning decoded mode, driving method, data
Group number and cabling mode etc. information；The content of image data packet for example comprising field sync signal data and shows data for example
RGB data group.Furthermore, it is worth mentioning at this point that, network interface 111a, 111b in data imput output circuit 11 can also be substituted for it
His port such as coaxial cable interface or optical fiber interface etc.；Network transformer 113a, 113b in data imput output circuit 11
Other circuits with signal shaping enhancing isolation features can also be substituted for.
Hold it is above-mentioned, image display control chip 13 include physical layer transceiver (PHY) IP kernel 131a, 131b, data parse
Module 132, image processing module 133, image-driven module 135, multichannel are grouped drive module 1361-136n, communication interface mould
Block 137 and monitoring data obtain module 138.Physical layer transceiver IP kernel 131a, 131b are separately connected data input and output electricity
Network transformer 113a, the 113b on road 11 are, for example, PHY network chip core, but the present invention is not limited thereto, can root
Elastic design is done according to the circuit structure of data imput output circuit 11, such as can also be other differential signal transmitting-receiving process modules
Such as SerDes module；In the present embodiment, physical layer transceiver IP kernel 131a, 131b are mainly used for via data input and output
The data packet (such as command parameter packet, image data packet etc.) that circuit 11 inputs is realized to receive and be unpacked and by data group to be output
Bao Houjing is sent by data imput output circuit 11.Data resolution module 132 connects physical layer transceiver IP kernel 131a,
131b and memory 15 are mainly used for classifying to the data inputted via physical layer transceiver IP kernel 131a (or 131b)
To one's name band carries LED light template die in (such as distinguishing command parameter data and image data) and processing such as interception image data
Image data (namely corresponding scanning blocks 10 image data with load area size in interception image data), the resolve command of group
Supplemental characteristic is simultaneously stored to memory 15, and data are forwarded to cascade by physical layer transceiver IP kernel 131b (or 131a)
Rear class scanning card on.Image processing module 133 connects data resolution module 132 and memory 15, is mainly used for according to configuration
Parameter (such as by obtaining after 132 resolve command supplemental characteristic of data resolution module) is corrected truncated picture data, is grey
Degree point discrete data the processing operations such as resets with image data after being handled, and image data will be stored to memory after processing
15.Image-driven module 135 connects image processing module 133 and memory 15, and image data is simultaneously after being mainly used for acquisition processing
According to configuration parameters such as cabling mode, driving chip and decodings in the LED light template die group of rear end in image data after processing
Display data carry out timing encapsulation and control signal are cooperated to carry out driving output, are in brief exactly according to image data after processing
Image display drive signals needed for generation meets rear end LED light template die group namely display data group and control signal group.Multichannel
Grouping drive module 136-136n is separately connected image-driven module 135, is mainly grouped place to image display drive signals
It manages to obtain grouping image display drive signals and carry out driving signal enhancing, or even can also be according to rear end LED light template die
Group needs to carry out output signal adjustment, predominantly shows that the matching of data group and control signal group and driving signal transmission connect
Mouth matching such as TTL single-ended signal transmission or LVDS differential signal transmission etc..Communication interface modules 137 connects data and parses mould
Block 132 is mainly used for for example connecing by serial ports (UART port), I2C or SPI etc. with the progress serial communication of rear end LED light template die group
Mouth carries out order and issues and data communication storage, the readback of correction coefficient data (such as in LED light template die group).Monitoring data obtains
Modulus block 138 connects data resolution module 132, the main monitoring function completed to LED light template die group, including LED light template die group
Temperature, voltage, runing time etc. monitoring and point inspection data back etc..
Referring to fig. 2, for using a kind of configuration diagram of LED display control system of scanning card shown in Fig. 1 10.Such as
Shown in Fig. 2, the LED display control system of the present embodiment includes front controller (not shown), scanning card 10 and LED display
20.Wherein, front controller can be the sending card of synchronous LED display screen control system, asynchronous LED display screen control system
Asynchronism Card, host computer of even installation control software etc.；The specific structure of scanning card 10 is as previously mentioned, therefore no longer superfluous herein
It states；The connection scanning of LED display 20 card 10, being specially includes multi-string LED lamp plate mould group 21, every a string of LED lamp panels mould group packet
It includes cascade multiple LED light template die groups 21 and first order LED light template die group 21 is connected to image display control core on scanning card 10
It is aobvious that a grouping drive module such as 136n and afterbody LED light template die group 21 for piece 13 is connected to image on scanning card 10
Show that the monitoring data of control chip 13 obtains module 138.It is, of course, understood that LED display 20 can also only configuration one
String LED light template die group or certain a string of LED lamp panel mould group only have a LED light template die group.
It is illustrated below in conjunction with the course of work of the Fig. 1 and Fig. 2 to the scanning card 10 of the present embodiment:
Data packet by data imput output circuit 11 enter after, first by physical layer transceiver IP kernel such as 131a (or
Unpacking 131b) is carried out to handle to be classified and handled by data resolution module 132 after obtaining parallel data such as TTL formatted data
And truncated picture data are sent to image processing module 133, by image processing module 133 first by truncated picture data into
Row caching process is stored into memory 15, is then corrected processing, the rearrangement of gray scale point discrete data etc. to image data
After reason operation, the image data handled is saved, image drive module 135 is waited to call.Correction process example herein
Inverse gamma (Gamma) correction, gamma correction and/or other correction such as chromaticity corrections in this way；At gray scale separation e.g. correction
After reason Bit separation etc. operation, that is to say, that gray scale separation be typically correction process after gradation data according to every Bit into
Row lock out operation, in a manner of being transformed into gradation data and realize weight according to different Bit differences；Data rearrangement is typically pair
(such as universal driving chip or PWM type drive according to the above-listed driving chip of rear end LED light template die group 21 for data after gray scale separation
Dynamic chip) needed for data format and LED lamp panel cabling information etc. carry out gradation data position and rearrange and spliced and combined
Deng operation.
Later, image-driven module 135 can be according to configuration parameters such as the driving chip of rear end LED light template die group 21 and decodings
Image display drive signals needed for information generation meets LED light template die group 21 namely display data group (such as multiple RGB datas
Group) and signal group is controlled (for example including clock signal (CLK), latch signal (LAT), enable signal (OE), row selection signal
(A, B, C) etc.), it is then output to grouping drive module 1361-136n；Grouping drive module 1361-136n is needed to rear end LED
The display data group service condition of lamp plate mould group 21 is grouped and enhances control signal, then also needs according to letter
Number transmission mode is matched to carry out difference outputs such as TTL Single-end output or LVDS etc., is finally driven grouping image display
Dynamic signal is transmitted in the LED light template die group 21 of each included load and performs image display；Grouping image display drive signals herein
Preferably with corresponding LED light template die group on serial differential signals format such as LVDS format transmission to LED display 20, and
And transmit grouping image display drive signals in a manner of serial differential signals and advantageously reduce winding displacement core quantity, improve transmission
Stability and reliability.
In addition, the monitoring informations collection module (corresponding part monitoring circuit) such as temperature, voltage in LED light template die group 21 needs
Data communication is carried out with scanning card 10；Or scanning card 10 wants the column driving chip in cooperated with LED lamp plate mould group 21 to carry out a little
Inspection operates and carries out the operations such as inspection result passback, and there are also carry out school to memory device (such as flash memory) in LED light template die group 21
The functions such as the readback that correction data saves.
It is noted that in other embodiments, 15 dynamic random such as SDRAM/DDR of memory can also be deposited
Reservoir is directly integrated into inside image display control chip 13, to reduce the pin of chip.
Referring to Fig. 3, for using a kind of configuration diagram of LED box of scanning card shown in Fig. 1 10.As shown in figure 3, this
The LED box 30 of embodiment includes: multiple (such as four) LED light template die groups 31 of scanning card 10 and connection scanning card 10, this
Locate each LED light template die group 31 and physics and electrical are for example realized by the cooperation of row's needle/mother row or other connectors and scanning card 10
Connection.Specifically, each LED light template die group 31 is respectively connected to the difference point of the image display control chip 13 of scanning card 10
Group drive module 1361-136n is performed image display with the control for receiving to be grouped image display drive signals accordingly, and each
A LED light template die group 31 can also be by the monitoring data of themselves capture (such as the monitoring datas such as temperature, voltage, point inspection number of results
According to etc.) monitoring data to image display control chip 13 on scanning card 10 is given to obtain module 138.Furthermore scanning card 10 may be used also
For example pass through interfaces and the MCU such as serial ports (UART port), I2C or SPI to carry out serial communication with each LED light template die group 31 respectively
Or Flash (flash memory) communication, to obtain the data such as mould group ID, the date of production, repair message in LED light template die group 31 and return
It greatly facilitates client to facilitate user to consult and obtain effective information to upper computer software and carries out examination and maintenance.It is worth one
It is mentioned that, when being configured with MCU in LED light template die group 31 (the monitoring circuit in corresponding LED light template die group 31 is intelligent mould group)
Preferably scanning card 10 carries out serial communication with LED light template die group 31 to obtain the monitoring data being collected and stored in Flash.
It is understood that MCU can also be substituted for other microprocessors such as arm processor, DSP etc., Flash can also be substituted for
Other nonvolatile memories.
Hold above-mentioned, for LED box 30 shown in Fig. 3, the function chip as far as possible of scanning card 10 on the one hand can be big
The big size limitation for reducing scanning card 10, while it being compatible with HUB grouping and arrangement function, effectively reduce image display driving letter
Number driving sum of series transmission problem, guarantee the normal transmission of signal.Furthermore the scanning card 10 of chip provides multiple groups grouping
Image display drive signals, monitoring data return path and serial communication interface, so as to complete the receptions of data, forwarding,
Data parse (for example including data classification and image interception), image real time transfer (such as correction process, gray scale separation, data
Reset etc.), image display drive signals generate, the grouping of image display drive signals, mould group monitoring data obtain even intelligent mould
The functions such as group serial communication.
In addition, it is noted that four LED light template die groups 31 shown in Fig. 3 can also be changed to be cascaded into a string of LED light
Template die group, so that it is connected to some grouping drive module such as 136n of image display control chip 13 on scanning card 10,
The purpose that image is shown can equally be reached.
It referring to fig. 4 and Fig. 5, is respectively that can block 10 matching used LED light template dies with scanning in the embodiment of the present invention
The module diagram of group and local electrical block diagram.As shown in figure 4, the LED light template die group 40 of the present embodiment includes: to go here and there simultaneously
Conversion interface circuit 41, LED drive circuit 43, monitoring circuit 45 and the LED light array of linescan method arrangement (referring to Fig. 5).
Serioparallel exchange interface circuit 41, which is received, (to be transmitted from front end scanning card 10 referring to Fig. 1 to Fig. 3) with RTCM-Radio Technical Commission for Maritime Services
It is grouped image display drive signals and carries out serioparallel exchange and be converted into parallel to obtain parallel signal, such as by serial LVDS signal
TTL signal and correspondingly it includes LVDS receiver；LED drive circuit 43 connects serioparallel exchange interface circuit 41, according to simultaneously
LED light in row TTL signal (including RGB data group, control signal group) drive control LED light template die group 40 as display pixel
The light/dark degree of (as shown in Figure 5) realizes that image is shown whereby；It monitors circuit 45 and connects LED drive circuit 43 to drive in LED
Dynamic circuit 43 carries out an acquisition point inspection result data when inspection operates and stores into Flash, and monitoring circuit 45 can also be by certainly
The MCU of band and front end scanning card 10 carry out serial communication to realize data interaction.Herein it is noted that due to being configured with string
And conversion interface circuit 41, so that LED light template die group 40 can carry out data by RTCM-Radio Technical Commission for Maritime Services and front end scanning card 10
Interaction, in this way, can greatly reduce the signal interference and driving problems in transmission, the transmission for being conducive to improve signal is complete
Property；Further, since monitoring circuit 45 is configured with the devices such as MCU and Flash and Temperature Humidity Sensor, it can be to LED lamp panel
Mould group 40 is monitored and monitoring data is passed back to upper computer software, and user is facilitated to check, while Flash device can store
Data, the users such as mould group ID, correction coefficient, factory information can also be checked by upper computer software, be conducive to user's note
Record and tracking relevant information.
In addition, Fig. 5 show the connection relationship diagram of LED drive circuit 43 with multiple LED light as display pixel.
As shown in figure 5, LED drive circuit 43 for example including row selection circuit and column drive circuit and in determinant arrangement LED light
Array forms electrical connection.Wherein, row selection circuit typically comprises row coding chip 431 such as 3-8 decoder and connection and is expert at
Multiple power supply switch tubes such as PMOS tube of 431 outlet side of coding chip；Column drive circuit typically comprises column driving chip 433
Such as 74HC595 chip, SMT5026 chip etc..
It is that another embodiment of the present invention can be with the module of scanning 10 matching used LED light template die groups of card referring to Fig. 6
Schematic diagram.As shown in fig. 6, LED light template die group 60 includes serioparallel exchange interface circuit 61, LED drive circuit 63, monitoring circuit
65, nonvolatile memory such as Flash 67 and the LED light array as display pixel.Wherein LED light array and LED
The connection relationship of driving circuit 63 can refer to the connection relationship of LED light array and LED drive circuit 43 in Fig. 5, therefore herein no longer
It repeats.
Hold the groupings above-mentioned, the reception of serioparallel exchange interface circuit 61 is transmitted from front end scanning card 10 with RTCM-Radio Technical Commission for Maritime Services
Image display drive signals simultaneously carry out string and turn and operate to obtain for example parallel TTL signal of corresponding parallel signal and send to LED to drive
Circuit 63 performs image display driving；It monitors circuit 65 and connects LED drive circuit 63 and serioparallel exchange interface circuit 61, such as
Point inspection collection module of devices, voltage sampling circuit and LED drive circuit 63 etc. is including Temperature Humidity Sensor etc. with reality
Now to the monitoring function of LED light template die group 60, obtained monitoring data can also via serioparallel exchange interface circuit 61 into
It goes and turns string operation and obtain for example serial LVDS signal of corresponding serial differential signals to be sent to image on front end scanning card 10 aobvious
Show that the monitoring data of control chip 13 obtains module 138 (referring to Fig. 1 or Fig. 2) and is forwarded.It, can be with as Flash 67
The progress serial communication of communication interface modules 137 of image display control chip 13 for example passes through serial ports on front end scanning card 10
The interfaces such as (UART port), I2C, SPI carry out data interaction.
Finally, it is noted that Fig. 4 and LED light template die group 40,60 shown in fig. 6 can also be used as LED shown in Fig. 3
LED light template die group in LED display control system shown in LED light template die group and Fig. 2 in cabinet 30 uses.
In conclusion the embodiment of the present invention proposes scanning card function chip as far as possible can reduce the body of scanning card
Product, can be effective the problems such as can also supporting the application of small spacing screen body, while avoid multiple drive power and the wiring of driving signal
Reduce problem of the client on design HUB, reduces the threshold of user's application, while the scanning card of chip reserves a variety of biographies
Defeated interface and communication interface increase the matched flexibility of output, are that subsequent Universal Die group and intelligent mould group upgrading and new product are pre-
Workable interface is first provided, removes the worry that user repeatedly modifies Interface design from, and defeated using differential signals such as LVDS
It can also be improved the stability and reliability of rear class transmission out, while the scanning of chip is stuck in the advantage in terms of reducing EMI, makes
Its EMC requirement that can more effectively reach client.
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 (9)
1. a kind of LED box including scanning card and connects the multiple LED light template die groups for scanning card；It is characterized in that, described
Scanning card includes image display control chip；Described image display control chip is for receiving externally input data packet and solving
Packet carries out classification processing to the data obtained after unpacking and carries out the image data obtained after classification processing to correspond to the scanning
Cassette tape carries the image interception of area size, correction process, gray scale point discrete data reset with generate image display drive signals with
And processing is grouped to described image display drive signals with export at least all the way grouping image display drive signals to described
Multiple LED light template die groups；Wherein described image display control chip includes two-way physical layer transceiver IP kernel, data parsing mould
Block, image processing module, image-driven module and multichannel are grouped drive module；One of described two-way physical layer transceiver IP kernel
For receiving the data packet and unpacking；The data resolution module is used to carry out classification processing to the data that unpacking obtains and will
The image data obtained after classification processing carries out described image and intercepts to obtain truncated picture data；Described image processing module
For being corrected processing, gray scale separation and the data rearrangement to truncated picture data with picture number after being handled
According to；Described image drive module is used to generate image display drive signals according to image data after the processing；And it is described more
Road grouping drive module is respectively used to be grouped place to described image display drive signals according to the rear end band of oneself load situation
Reason and driving enhancing, to generate and export at least grouping image display drive signals all the way.
2. LED box as described in claim 1, which is characterized in that described at least grouping image display drive signals are all the way
Multichannel, and multichannel grouping image display drive signals include identical control signal group and different display data groups.
3. LED box as claimed in claim 2, which is characterized in that the control signal group includes clock signal, latches letter
Number, enable signal and row selection signal；The display data group includes RGB data group.
4. LED box as described in claim 1, which is characterized in that the multiple LED light template die group is concatenated together composition one
String LED light template die group is to receive the image display drive signals of grouping all the way that described image display control chip exports.
5. LED box as described in claim 1, which is characterized in that described image display control chip is also integrated with communication and connects
Mouth mold block and monitoring data obtain module, are all connected with the data resolution module；The communication interface modules be used for it is described more
A LED light template die group carries out serial communication, and the monitoring data obtains module and collects for obtaining the multiple LED light template die group
Monitoring data.
6. LED box as claimed in claim 5, which is characterized in that the LED light template die group includes serioparallel exchange interface electricity
Road, LED drive circuit, LED light array, monitoring circuit and nonvolatile memory, the LED drive circuit connect the string
And conversion interface circuit, the LED light array and the monitoring circuit, the monitoring circuit are also connected with the serioparallel exchange interface
Circuit；The serioparallel exchange interface circuit for receive all the way the grouping image display drive signals and carry out serioparallel exchange with
Serial differential signals are converted into parallel TTL signal to send to the LED drive circuit with the progress of LED light array described in drive control
Image is shown；The monitoring circuit is used for monitoring data through the serioparallel exchange interface circuit in the form of serial differential signals
The monitoring data in described image display control chip being transmitted on the scanning card obtains module；It is described non-volatile
The communication interface modules in described image display control chip on memory and the scanning card carries out serial communication.
7. LED box as claimed in claim 5, which is characterized in that the LED light template die group includes serioparallel exchange interface electricity
Road, LED drive circuit, LED light array and monitoring circuit, and the LED drive circuit connects the serioparallel exchange interface electricity
Road, the LED light array and the monitoring circuit；The serioparallel exchange interface circuit is aobvious for receiving the grouping image all the way
Show driving signal and carry out serioparallel exchange and is sent so that serial differential signals are converted into parallel TTL signal to the LED drive circuit
It is performed image display with LED light array described in drive control；The monitoring circuit includes microprocessor and nonvolatile memory
And it is gone here and there by the microprocessor and the communication interface modules in the described image display control chip on the scanning card
Row communication is for uploading monitoring data.
8. LED box as described in claim 1, which is characterized in that the scanning, which blocks, further includes and described image display control
Chip is located at the first network interface, first network transformer, the second network interface and the second network transformer on same circuit board；It is described
First network interface connects the two-way physical layer transceiver in described image display control chip by the first network transformer
One of device IP kernel, second network interface connect the institute in described image display control chip by second network transformer
State another of two-way physical layer transceiver IP kernel.
9. a kind of LED box including scanning card and connects the multiple LED light template die groups for scanning card；It is characterized in that, described
Scanning card includes image display control chip；Described image display control chip is for receiving externally input data packet and basis
The multichannel grouping image display drive signals that the data packet generates serial differential signals form are transmitted separately to by the multiple
The multi-string LED lamp plate mould group that LED light template die group is constituted performs image display；The multichannel is grouped image display drive signals
Identical control signal group and different display data groups；And the control signal group is for controlling the multi-string LED lamp plate
In mould group connect LED light array row selection circuit and column drive circuit and including clock signal, latch signal, enable signal and
Row selection signal, the display data group are used to drive the column drive circuit of corresponding string LED light template die group；It is wherein described
Image display control chip includes two-way physical layer transceiver IP kernel, data resolution module, image processing module, image-driven mould
Block and multichannel are grouped drive module；One of described two-way physical layer transceiver IP kernel is for receiving the data packet and unpacking；
The data resolution module is used for the image data that the data that unpacking obtains are carried out classification processing and will be obtained after classification processing
Described image interception is carried out to obtain truncated picture data；Described image processing module is used to carry out truncated picture data
Correction process, gray scale point discrete data are reset with image data after being handled；Described image drive module is used for according to
Image data generates image display drive signals after processing；And multichannel grouping drive module be respectively used to according to oneself
Rear end band carries situation and is grouped processing and driving enhancing to described image display drive signals, to generate and export described more
Road is grouped image display drive signals.
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|---|---|---|---|
| CN201611220624.XA CN106782295B (en) | 2016-12-26 | 2016-12-26 | LED box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220624.XA CN106782295B (en) | 2016-12-26 | 2016-12-26 | LED box |
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| CN106782295A CN106782295A (en) | 2017-05-31 |
| CN106782295B true CN106782295B (en) | 2019-04-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108573674A (en) * | 2018-07-10 | 2018-09-25 | 利亚德光电股份有限公司 | LED display control chips |
| CN108877647A (en) * | 2018-08-13 | 2018-11-23 | 深圳市奥拓电子股份有限公司 | LED control system and LED display device |
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| CN204991031U (en) * | 2015-06-16 | 2016-01-20 | 深圳市欧立光电技术有限公司 | LED box structure |
| CN205158877U (en) * | 2015-11-10 | 2016-04-13 | 西安诺瓦电子科技有限公司 | LED display control card, LED lamp plate and LED display system |
| CN105551430A (en) * | 2016-02-03 | 2016-05-04 | 西安诺瓦电子科技有限公司 | LED case and LED display screen system |
| CN105741753A (en) * | 2016-02-03 | 2016-07-06 | 西安诺瓦电子科技有限公司 | Receiving card, LED display control and recording system and LED display control method |
| CN106021172A (en) * | 2016-05-31 | 2016-10-12 | 积成电子股份有限公司 | Data communication method and device |
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| CN204991031U (en) * | 2015-06-16 | 2016-01-20 | 深圳市欧立光电技术有限公司 | LED box structure |
| CN205158877U (en) * | 2015-11-10 | 2016-04-13 | 西安诺瓦电子科技有限公司 | LED display control card, LED lamp plate and LED display system |
| CN105551430A (en) * | 2016-02-03 | 2016-05-04 | 西安诺瓦电子科技有限公司 | LED case and LED display screen system |
| CN105741753A (en) * | 2016-02-03 | 2016-07-06 | 西安诺瓦电子科技有限公司 | Receiving card, LED display control and recording system and LED display control method |
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