CN106652895A - Scanning card - Google Patents
Scanning card Download PDFInfo
- Publication number
- CN106652895A CN106652895A CN201611220625.4A CN201611220625A CN106652895A CN 106652895 A CN106652895 A CN 106652895A CN 201611220625 A CN201611220625 A CN 201611220625A CN 106652895 A CN106652895 A CN 106652895A
- Authority
- CN
- China
- Prior art keywords
- data
- module
- scanning
- led lamp
- packet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention provides a scanning card. The scanning card is suitable for being connected with a plurality of LED lamp panel modules. The scanning card comprises a data input and output circuit and an image display control chip connected with the data input and output circuit, wherein the image display control chip is used for receiving a data packet input through the data input and output circuit and unpacking the data packet, carrying out image capture (corresponding to the size of a carrying area of the scanning card), correcting treatment, gray level separation and data rearrangement on image data obtained after unpacking, so that image display drive signals are generated, the image display drive signals are grouped, and at least one path of the grouped image display drive signals is output to the plurality of LED lamp panel modules. For the scanning card, the function of the scanning card is made chip-based to the greatest extent, and therefore, the purposes of reducing the size of the scanning card and the improving the display effect of an LED display screen body are achieved.
Description
Technical field
The present invention relates to display technology field, more particularly to LED display control system.
Background technology
As the development and the progress of society of technology, LED display application in daily life are more and more extensive, commonly use
LED display control system mainly include that the video source, video processor, sending card, scanning card and the LED that are sequentially connected are aobvious
Display screen, and scan the general cooperation HUB plates (also referred to as pinboard) of card and be arranged in LED box, while the HUB mouths on HUB plates can lead to
Crossing winding displacement or the multiple LED lamp panel modules of row's pin connection carries out cascade and shows, thus constitutes a LED box, multiple LED
Casing is spliced into again a LED display.
With the development of indoor Small Distance LED display, need the pixel for scanning cassette tape load more and more, and due to sweeping
Cassette tape tolerance system is retouched, leads to not realize finer and smoother display effect with the situation of load hypograph big, while scanning card body product
The restriction of size also makes overwhelming majority scanning khaki to apply on more closely spaced LED display.
At the same time, existing LED display lights needs by scanning card output image display drive signals, then passes through
HUB plates carry out packet and signal drives and strengthens, then are connected to LED lamp panel by winding displacement or other connectors by HUB plates
Module is lighted, while chip or functional module that some on LED lamp panel module have monitoring function are also required to pass through
Winding displacement and HUB plates are communicated with scanning card, so as to realize for monitoring information passing back to scanning card end, then are passed back by scanning card
User is showed to upper computer software.
However, in existing scanning card, due to having more complete feature, scanning calorie requirement is logical from front end sending card
Cross network receiving data, at the same will by the HUB interface output image display drive signals of standard, so add FPGA and its
Supporting related device, driving chip of output signal enhancing etc., cause the volume ratio for scanning card larger, so that it is not
Suitable for the application of Small Distance LED display；Meanwhile, scan the limited bandwidth of card and be difficult to support that very big band is carried；This
Outward, in existing LED display control system, account in the failure problems occurred in the design of HUB plates and the connection of LED lamp panel module
A large portion ratio, is mainly reflected on HUB plates that complicated various signal distribution is with winding displacement length different to cause driving
The interference problem that ability not enough causes is than more serious；Furthermore, because each LED lamp panel module needs multigroup display 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, so many signals will be had when band carries more data group needs
Rearrangement and driving are wanted, often occurs interface error or signal routing un-reasonable phenomenon in the process, cause to show
Exception or display effect are affected；In addition, general HUB plates can be attached by winding displacement with LED lamp panel module, and
Image display drive signals (display data signal and control signal) required for LED lamp panel module need to be scanned through card with
Multiple drive power just can guarantee that the normal transmission of signal on HUB plates, and multiple drive power can often introduce signal distortion and postpone etc.
Uncontrollable problem, can so largely effect on the normal display effect of LED display, and strengthen driving can increase signal radiation,
Product is caused to acquire a certain degree of difficulty by EMC certifications.
The content of the invention
Therefore, to overcome defect of the prior art and deficiency, present invention proposition is a kind of to scan card.
Specifically, a kind of scanning card that the embodiment of the present invention is proposed, is suitable to be connected and including number with multiple LED lamp panel modules
According to imput output circuit.The scanning card also includes image display control chip, connects the data input output circuit and use
In reception is by the packet of data input output circuit input and unpacks, it is right that the view data to obtaining after unpacking is carried out
The image interception for scanning cassette tape load area size, correction process, gray scale point discrete data is answered to reset and shown to produce image
Drive signal and packet transaction is carried out to described image display drive signals with export at least all the way packet diagram picture show drive
Signal is to the plurality of LED lamp panel module.
In one embodiment of the invention, it is described at least all the way packet diagram as display drive signals be multichannel, it is and described
Multichannel packet diagram is as display drive signals are comprising identical control signal group and different display data groups；The plurality of LED
Template die group includes multi-string LED lamp plate module to receive the multichannel packet diagram respectively as display drive signals, and every a string of LEDs
Template die group includes a LED lamp panel module or the multiple described LED lamp panel module being concatenated together.
In one embodiment of the invention, the correction process includes anti-gamma correction, gamma correction and chromaticity correction
In it is part or all of.
In one embodiment of the invention, described image display control chip includes：Physical layer transceiver IP kernel, data
Parsing module, image processing module, image-driven module and multichannel packet drive module；The physical layer transceiver IP kernel is used
In reception is by the packet of data input output circuit input and unpacks；The data resolution module connection is described
Physical layer transceiver IP kernel and for the view data obtained after unpacking is carried out described image intercept to obtain truncated picture
Data；Described image processing module connects the data resolution module and for carrying out at the correction to truncated picture data
Reason, the gray scale are separated and the data rearrangement is with view data after being processed；Described image drive module connects the figure
As processing module and for producing described image display drive signals according to view data after the process；And the multichannel point
Group drive module connects described image drive module and is respectively used to aobvious to described image according to oneself LED lamp panel module with carrying
Show that drive signal carries out packet transaction, so as to export at least all the way packet diagram as display drive signals are to the plurality of LED lamp panel
Module.
In one embodiment of the invention, described image display control chip also includes the second physical layer transceiver IP
Core, connects the data resolution module and for forwarding by the packet of data input output circuit input to next stage
Scanning card.
In one embodiment of the invention, described image display control chip is also integrated with dynamic RAM, even
Connect the data resolution module, described image processing module and described image and drive module.
In one embodiment of the invention, it is described during at least all the way packet diagram is as display drive signals per being grouped all the way
Image display drive signals are the serial differential signals that the output of one of drive module is grouped from the multichannel.
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 plurality of LED lamp panel module
Carry out serial communication；The monitoring data acquisition module is used to obtain the monitoring data that the plurality of LED lamp panel module is collected.
In one embodiment of the invention, described image display control chip is asic chip.
Additionally, a kind of scanning card that another embodiment of the present invention is proposed, including data input output circuit.The scanning card
Also include image display control chip, connect the data input output circuit；Described image display control chip includes physics
Layer transceiver IP kernel, data resolution module, image processing module, image-driven module and multichannel packet drive module；It is described
Physical layer transceiver IP kernel is used for the packet received by data input output circuit input and unpacks；The data solution
The view data that analysing module is used for obtaining after unpacking carries out the correspondence scanning cassette tape and carries the image interception of area size to obtain
To truncated picture data；Described image processing module be used for truncated picture data are corrected processs, gray scale separation and
Data rearrangement is with view data after being processed；Described image drive module is used to produce figure according to view data after the process
As display drive signals；And the multichannel packet drive module is respectively used to carry situation to the figure according to the rear end band of oneself
As display drive signals carry out packet transaction, so as to parallel TTL signal form or serial differential signals form output multi-channel point
The outside of group image display drive signals to described image display control chip；Wherein, the multichannel packet diagram picture shows and drives
Signal has identical control signal group and different display data groups, and the control signal group includes clock signal, latches letter
Number, enable signal and row selection signal.
From the foregoing, it will be observed that the embodiment of the present invention is by the way that scanning card function is tried one's best chip, it can reduce the body of scanning card
Product, can also support the application of Small Distance screen body, while the problems such as avoiding multiple drive power and the wiring of drive signal, can be effective
Problem of the user on design HUB is reduced, the threshold of user's application is reduced, and can also using the output of the differential signals such as LVDS
The stability and reliability of rear class transmission are improved, while the scanning of chip is stuck in the advantage reduced in terms of EMI so as to Ke Yigeng
The EMC for being effectively accomplished client is required.
Become obvious by the other side and feature below with reference to the detailed description of accompanying drawing, the present invention.But should know
Road, the accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
Point out outward, it is not necessary to scale accompanying drawing, they only try hard to conceptually illustrate structure described herein and flow process.
Description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is a kind of structural representation of the scanning card for being relevant to the embodiment of the present invention.
Fig. 2 its be configuration diagram using a kind of LED display control system that card is scanned shown in Fig. 1.
Fig. 3 is the configuration diagram using a kind of LED box that card is scanned shown in Fig. 1.
Fig. 4 is the module diagram that a kind of matching used LED lamp panel module can be carried out with scanning card shown in Fig. 1.
Fig. 5 is the concrete structure of LED drive circuit and its LED with determinant arrangement in LED lamp panel module shown in Fig. 4
The annexation schematic diagram of array.
Fig. 6 is the module diagram that matching used another kind of LED lamp panel module can be carried out with scanning card shown in Fig. 1.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Specifically, following embodiments of the invention propose that scanning card function is tried one's best chip, to solve existing LED display
Signal transmission and HUB routing problems in control system, while reducing the volume of scanning card, supports that bigger band is carried, and supports little
Away from screen body, or even the signal stabilization and reliability that solve during existing scanning is stuck in the cascade of signal transacting aspect and multistage transmission are asked
Topic, reduces EMI, and the more efficient EMC for reaching client is required.
Referring to Fig. 1, it is a kind of structural representation of scanning card of the embodiment of the present invention.As shown in figure 1, the present embodiment
Scanning card 10 includes：Data input output circuit 11, image display control chip 13 and memory 15, data input output electricity
Road 11 and memory 15 are respectively connecting to image display control chip 13；Image display control chip 13 herein can be compiled for one
Journey logical device chip or ASIC (Application Specific Integrated Circuits, a special integrated electricity
Road) chip, and preferably asic chip, can so simplify the complexity that user uses image display control chip 13.
Wherein, data input output circuit 11 for example includes network interface 111a, 111b and network transformer 113a, 113b；
Wherein, by network transformer 113a connection figures as display control chip 13, network interface 111b passes through network transformer to network interface 111a
113b connection figures as display control chip 13, so as to constitute two paths of data transmission channel, wherein all the way data transmission channel is used for
Connection front controller (such as sending card) the command parameter bag that issued with receiving front-end controller and view data bag and/or on
Monitoring data etc. is passed to front controller etc., another circuit-switched data transmission channel is used to cascade next stage scanning card to forward front end to control
Command parameter bag that device processed is issued and view data bag and/or forwarding rear class scanning card are uploaded to the monitoring data of front controller
Deng.The content of command parameter bag herein for example includes row driving chip type (PWM types driving chip or universal driving core
Piece), band carries viewing area size, and output display data (such as RGB data) always organize number, the scan mode (example of LED lamp panel module
Such as 8 sweep, 16 sweep, 32 sweep) and the pixel width of LED lamp panel module is high, scanning number, scanning decoded mode, type of drive, data
Group number and cabling mode etc. information；The content of view data bag for example comprising field sync signal data and display data for example
RGB data group.Furthermore, it is worth mentioning at this point that, the network interface 111a in data input output circuit 11,111b can also be substituted for it
His port such as coaxial cable interface or optical fiber interface etc.；Network transformer 113a in data input output circuit 11,113b
Other can also be substituted for, and there is signal shaping to strengthen the circuit of isolation features.
Hold above-mentioned, image display control chip 13 includes physical layer transceiver (PHY) IP kernel 131a, 131b, data parsing
Module 132, image processing module 133, image-driven module 135, multichannel packet drive module 1361-136n, communication interface mould
Block 137 and monitoring data acquisition module 138.Physical layer transceiver IP kernel 131a, 131b connect respectively data input output electricity
Network transformer 113a, the 113b on road 11, it is, for example, PHY network chip cores, but the present invention is not limited thereto, and it can be with root
Elastic design is done according to the circuit structure of data input output circuit 11, for example, can also be other differential signal transmitting-receiving process modules
Such as SerDes modules；In the present embodiment, physical layer transceiver IP kernel 131a, 131b is mainly used in exporting via data input
The packet (such as command parameter bag, view data bag etc.) of the input of circuit 11 is realized receiving and unpacked and by data group to be output
Bao Houjing is sent by data input output circuit 11.Data resolution module 132 connects physical layer transceiver IP kernel 131a,
131b and memory 15, are mainly used in the data to being input into via physical layer transceiver IP kernel 131a (or 131b) and classify
(for example distinguishing command parameter data and view data) and process in such as intercepting view data to one's name with load LED template die
The view data (namely intercepting the view data that the corresponding band for scanning card 10 in view data carries area size) of group, resolve command
Supplemental characteristic is simultaneously stored to memory 15, and data are forwarded to into 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 according to configuration
Parameter (such as by obtain after the resolve command supplemental characteristic of data resolution module 132) is corrected to truncated picture data, ash
Degree point discrete data rearrangement etc. processes operation with view data after being processed, and view data will be stored to memory after process
15.Image-driven module 135 connects image processing module 133 and memory 15, is mainly used in after acquisition is processed view data simultaneously
According to configuration parameters such as the cabling mode on the LED lamp panel module of rear end, driving chip and decodings in view data after process
Display data carries out sequential and encapsulates and coordinate control signal to be driven output, is exactly in brief according to view data after process
Generation meets image display drive signals namely display data group and the control signal group needed for the LED lamp panel module of rear end.Multichannel
Packet drive module 136-136n distinguishes connection figure as drive module 135, and mainly image display drive signals are carried out at packet
Manage to obtain packet diagram as display drive signals and be driven signal enhancing, or even can be with according to rear end LED template die
The needing of group carries out output signal adjustment, and the predominantly matching of display data group and control signal group and drive signal transmission connects
Mouth matching such as TTL single-ended signal transmissions or LVDS differential signal transmissions etc..The connection data parsing mould of communication interface modules 137
Block 132, is mainly used in carrying out serial communication with rear end LED lamp panel module for example connecing by serial ports (UART mouths), I2C or SPI etc.
Mouth enters line command and issues and data communication (such as storage, the retaking of a year or grade of correction coefficient data on LED lamp panel module).Monitoring data is obtained
Delivery block 138 connects data resolution module 132, mainly completes the monitoring function to LED lamp panel module, including LED lamp panel module
Temperature, voltage, run time etc. monitoring and point inspection data back etc..
Referring to Fig. 2, it is a kind of configuration diagram of the LED display control system using 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, even host computer of installation control software etc.；The concrete structure of scanning card 10 is as it was previously stated, event here is no longer gone to live in the household of one's in-laws on getting married
State；The connection scanning of LED display 20 card 10, it is specially includes multi-string LED lamp plate module 21, every a string of LED lamp panels module bag
The multiple LED lamp panel modules 21 and first order LED lamp panel module 21 for including cascade are connected to scanning 10 epigraph display control cores of card
One packet drive module such as 136n of piece 13 and afterbody LED lamp panel module 21 are connected to scanning 10 epigraphs of card and show
Show the monitoring data acquisition module 138 of control chip 13.It is, of course, understood that LED display 20 can also only configuration one
String LED lamp panel module, or certain a string of LED lamp panel module is only with a LED lamp panel module.
The course of work of the scanning card 10 of the present embodiment is illustrated below in conjunction with Fig. 1 and Fig. 2：
After packet is entered by data input output circuit 11, first by physical layer transceiver IP kernel such as 131a (or
131b) carry out unpacking process to obtain being classified and being processed by data resolution module 132 after parallel data such as TTL formatted datas
And truncated picture data are delivered to into image processing module 133, by image processing module 133 truncated picture data are entered first
Row caching process is stored in memory 15, and process, the rearrangement of gray scale point discrete data etc. are then corrected to view data
After reason operation, the view data to having processed is preserved, and Waiting Graph is called as drive module 135.Correction process example herein
In this way inverse gamma (Gamma) correction, gamma correction and/or other correction such as chromaticity corrections；It is, for example, at correction that gray scale is separated
The operations such as the Bit separation after reason, that is to say, that gray scale separates the gradation data being typically after correction process and enters according to every Bit
Row lock out operation, gradation data is transformed into the mode that weight is realized according to different Bit differences；Data rearrangement is typically right
Gray scale separate after data according to the above-listed driving chip of rear end LED lamp panel module 21, (such as universal driving chip or PWM types drive
Dynamic chip) desired data form and LED lamp panel cabling information etc. carry out gradation data position and rearrange and spliced and combined
Deng operation.
Afterwards, image-driven module 135 can be according to the configuration parameter such as the driving chip of rear end LED lamp panel module 21 and decoding
Information produces image display drive signals namely display data group (such as multiple RGB datas met needed for LED lamp panel module 21
Group) and control signal group (for example including clock signal (CLK), latch signal (LAT), enable signal (OE), row selection signal
(A, B, C) etc.), it is then output to be grouped drive module 1361-136n；Packet drive module 1361-136n is needed to rear end LED
The display data group service condition of lamp plate module 21 is grouped and control signal is strengthened, and is then also needed to according to letter
Number transmission mode is matched to carry out difference outputs such as TTL Single-end outputs or LVDS etc., is finally shown packet diagram picture and is driven
Dynamic signal transmission carries out image and shows to the LED lamp panel module 21 for respectively carry load；Packet diagram herein is as display drive signals
Preferably with serial differential signals form such as LVDS format transmissions to LED lamp panel module corresponding on LED display 20, and
And winding displacement core quantity is advantageously reduced with serial differential signals mode transmission packe image display drive signals, improve transmission
Stability and reliability.
In addition, the monitoring information collection module such as temperature, voltage on LED lamp panel module 21 (corresponding part supervisory circuit) is needed
To enter row data communication with scanning card 10；Or scanning card 10 wants the row driving chip on cooperated with LED lamp plate module 21 to carry out a little
Inspection operates and carries out the operations such as an inspection result passback, also carries out school to memory device on LED lamp panel module 21 (such as flash memory)
The functions such as the retaking of a year or grade that correction data is preserved.
It is noted that in other embodiments, it is also possible to which the dynamic randoms such as such as SDRAM/DDR of memory 15 are deposited
Reservoir is directly integrated into inside image display control chip 13, to reduce the pin of chip.
Referring to Fig. 3, it is a kind of configuration diagram of the LED box using 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 lamp panel modules 31 of scanning card 10 and connection scanning card 10.Respectively
Individual LED lamp panel module 31 is respectively connecting to different grouping drive module 1361- of the image display control chip 13 for scanning card 10
136n is shown with receiving corresponding packet diagram as the control of display drive signals carries out image, and each LED lamp panel module 31
The monitoring data (such as monitoring data such as temperature, voltage, point inspection result data etc.) of themselves capture can also be delivered to scanning card
The monitoring data acquisition module 138 of 10 epigraph display control chips 13.Furthermore, scanning card 10 can also respectively with each LED
It is for example logical by the interfaces such as serial ports (UART mouths), I2C or SPI and MCU or Flash (flash memory) that lamp plate module 31 carries out serial communication
Letter, to obtain the data such as module ID, the date of production, repair message on LED lamp panel module 31 and be back to upper computer software, with
Facilitate user to consult and obtain effective information, greatly facilitating client carries out examination and maintenance.It is noted that working as LED
Card 10 is preferably scanned when MCU (supervisory circuit on correspondence LED lamp panel module 31 is intelligent module) is configured with template die group 31
Serial communication is carried out with LED lamp panel module 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., and it is non-volatile that Flash can also be substituted for other
Memory.
Hold above-mentioned, for the LED box 30 shown in Fig. 3, the function chip as far as possible of its scanning card 10 on the one hand can be big
The big size limitation for reducing scanning card 10, while compatibility HUB packets and function of arranging, effectively reduces image and shows and drive letter
Number driving sum of series transmission problem, it is ensured that the normal transmission of signal.Furthermore, the scanning card 10 of chip provides multigroup packet
Image display drive signals, monitoring data return path and serial communication interface, such that it is able to complete the reception of data, forwarding,
Data parsing (such as including data classification and image interception), image real time transfer (such as correction process, gray scale separation, data
Reset etc.), image display drive signals are produced, the packet of image display drive signals, module monitoring data obtain even intelligent mould
The functions such as group serial communication.
In addition, it is noted that four LED lamp panel modules 31 can also be changed to be cascaded into a string of LEDs shown in Fig. 3
Template die group, so as to be connected to some packet drive module such as 136n of scanning 10 epigraph display control chips 13 of card, its
The purpose that image shows can equally be reached.
Referring to Fig. 4 and Fig. 5, it is respectively in the embodiment of the present invention can be with scanning 10 matching used LED template dies of card
The module diagram and local electrical block diagram of group.As shown in figure 4, the LED lamp panel module 40 of the present embodiment includes：String is simultaneously
The LED light array (referring to Fig. 5) of conversion interface circuit 41, LED drive circuit 43, supervisory circuit 45 and linescan method arrangement.
Serioparallel exchange interface circuit 41 is received and scans what 10 (referring to Fig. 1 to Fig. 3) of card were transmitted with RTCM-Radio Technical Commission for Maritime Services from front end
Packet diagram is as display drive signals and carries out serioparallel exchange to obtain parallel signal, for example, be converted into serial LVDS signals parallel
TTL signal and correspondingly it includes LVDS receiver；The connection serioparallel exchange of LED drive circuit 43 interface circuit 41, it is according to simultaneously
As the LED of display pixel on row TTL signal (including RGB data group, control signal group) drive control LED lamp panel module 40
The light/dark degree of (as shown in Figure 5), realizes that whereby image shows；Supervisory circuit 45 connects LED drive circuit 43 to drive in LED
Dynamic circuit 43 carries out an acquisition point inspection result data when inspection is operated and stores into Flash, and supervisory circuit 45 can also be by certainly
The MCU of band carries out serial communication to realize data interaction with front end scanning card 10.Herein it is noted that due to being configured with string
And conversion interface circuit 41, so as to LED lamp panel module 40 can carry out data by RTCM-Radio Technical Commission for Maritime Services with front end scanning card 10
Interaction, consequently, it is possible to signal interference and driving problems in transmission can be greatly reduced, is conducive to the transmission for improving signal complete
Property；Further, since supervisory circuit 45 is configured with the devices such as MCU and Flash and Temperature Humidity Sensor, it can be to LED lamp panel
Module 40 is monitored and monitoring data is passed back to into upper computer software, facilitates user to check, while Flash devices can be stored
The data such as module ID, correction coefficient, information of dispatching from the factory, user can also be checked by upper computer software, be conducive to user to remember
Record and tracking relevant information.
In addition, Fig. 5 show the annexation schematic diagram of LED drive circuit 43 and the multiple LEDs as display pixel.
As shown in figure 5, LED drive circuit 43 for example include row selection circuit and column drive circuit and with the LED in determinant arrangement
Array forms electrical connection.Wherein, row selection circuit typically comprises row decoding chip 431 such as 3-8 decoders and connection and is expert at
Multiple power supply switch tubes such as PMOS of the outlet side of coding chip 431；Column drive circuit typically comprises row driving chip 433
Such as 74HC595 chips, SMT5026 chips etc..
Referring to Fig. 6, it is that another embodiment of the present invention can be with the module of scanning 10 matching used LED lamp panel modules of card
Schematic diagram.As shown in fig. 6, LED lamp panel module 60 includes serioparallel exchange interface circuit 61, LED drive circuit 63, supervisory circuit
65th, nonvolatile memory such as Flash 67 and the LED light array as display pixel.Wherein LED light array and LED
The annexation of drive circuit 63 refers to the annexation of LED light array and LED drive circuit 43 in Fig. 5, therefore here is no longer
Repeat.
Hold above-mentioned, serioparallel exchange interface circuit 61 is received and scans the packet that card 10 is transmitted with RTCM-Radio Technical Commission for Maritime Services from front end
Image display drive signals and carry out string turn and operate obtain for example parallel TTL signal of corresponding parallel signal deliver to LED driving
Circuit 63 carries out image and shows driving；Supervisory circuit 65 connects LED drive circuit 63 and serioparallel exchange interface circuit 61, and it is for example
Point inspection collection module of device, voltage sampling circuit and LED drive circuit 63 etc. is with reality including Temperature Humidity Sensor etc.
Now to the monitoring function of LED lamp panel module 60, the monitoring data obtained by it can be entering via serioparallel exchange interface circuit 61
Go and turn string operation obtain corresponding serial differential signals such as serial LVDS signals be sent to front end scanning card 10 epigraphs show
The monitoring data acquisition module 138 (referring to Fig. 1 or Fig. 2) for showing control chip 13 is forwarded.As for Flash 67, it can be with
The communication interface modules 137 of front end scanning 10 epigraph display control chips 13 of card carries out serial communication and for example passes through serial ports
The interface such as (UART mouths), I2C, SPI carries out data interaction.
Finally, it is worth mentioning at this point that, the LED lamp panel module 40,60 shown in Fig. 4 and Fig. 6 can also be used as LED shown in Fig. 3
The LED lamp panel module in LED lamp panel module and LED display control system shown in Fig. 2 in casing 30 is used.
In sum, the embodiment of the present invention proposes that scanning card function is tried one's best chip, and it can reduce the body of scanning card
Product, can also support the application of Small Distance screen body, while the problems such as avoiding multiple drive power and the wiring of drive signal, can be effective
Problem of the client on design HUB is reduced, the threshold of user's application is reduced, while the scanning card of chip reserves various transmission connecing
Mouth and communication interface, increased the flexibility of output matching, be that follow-up general module and intelligent module upgrading are carried in advance with new product
For the interface that can be used, remove the worry that user repeatedly changes Interface design from, and exported using differential signals such as LVDS
The stability and reliability of rear class transmission can be improved, while the scanning of chip is stuck in the advantage reduced in terms of EMI so as to can
Required with the EMC for more effectively reaching client.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when making a little change or modification using the technology contents of the disclosure above
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, still fall within the range of technical solution of the present invention.
Claims (10)
1. a kind of scanning card, is suitable to be connected and including data input output circuit with multiple LED lamp panel modules；Its feature
In the scanning card also includes image display control chip, connects the data input output circuit and passes through institute for receiving
State the packet of data input output circuit input and unpack, the view data to obtaining after unpacking carries out the correspondence scanning card
With carry the image interception of area size, correction process, the rearrangement of gray scale point discrete data with produce image display drive signals and
Described image display drive signals are carried out with packet transaction with export at least all the way packet diagram as display drive signals are to described more
Individual LED lamp panel module.
2. scanning card as claimed in claim 1, it is characterised in that it is described at least all the way packet diagram as display drive signals be many
Road, and the multichannel packet diagram is as display drive signals are comprising identical control signal group and different display data groups；It is described
Multiple LED lamp panel modules include multi-string LED lamp plate module to receive the multichannel packet diagram respectively as display drive signals, and often
A string of LED lamp panel modules include a LED lamp panel module or the multiple described LED lamp panel module being concatenated together.
3. scanning as claimed in claim 1 blocks, it is characterised in that the correction process includes anti-gamma correction, gamma correction
With it is part or all of in chromaticity correction.
4. scanning as claimed in claim 1 blocks, it is characterised in that described image display control chip includes：Physical layer transceiver
Device IP kernel, data resolution module, image processing module, image-driven module and multichannel packet drive module；The physical layer
Transceiver IP kernel is used for the packet received by data input output circuit input and unpacks；The data parsing
Module connects the physical layer transceiver IP kernel and intercepts to obtain for carrying out the view data obtained after unpacking described image
To truncated picture data；Described image processing module connects the data resolution module and for entering to truncated picture data
The row correction process, the gray scale are separated and the data rearrangement is with view data after being processed；Described image drives mould
Block connects described image processing module and for producing described image display drive signals according to view data after the process；With
And the multichannel packet drive module connects described image drive module and is respectively used to according to oneself LED lamp panel module with carrying
Packet transaction is carried out to described image display drive signals, so as to export at least all the way packet diagram as display drive signals are to described
Multiple LED lamp panel modules.
5. scanning as claimed in claim 4 blocks, it is characterised in that described image display control chip also includes the second physical layer
Transceiver IP kernel, the packet for connecting the data resolution module and being input into by the data input output circuit for forwarding
Block to next stage scanning.
6. scanning as claimed in claim 4 blocks, it is characterised in that described image display control chip is also integrated with dynamic random
Memory, connects the data resolution module, described image processing module and described image and drives module.
7. the scanning card as described in right 4, it is characterised in that described each during at least all the way packet diagram is as display drive signals
Road packet diagram is to be grouped the serial differential signals that one of drive module is exported from the multichannel as display drive signals.
8. the scanning card as described in right 4, it is characterised in that described image display control chip is also integrated with communication interface modules
With monitoring data acquisition module, the data resolution module is all connected with；The communication interface modules is used for and the plurality of LED
Template die group carries out serial communication；The monitoring data acquisition module is used to obtain the monitoring that the plurality of LED lamp panel module is collected
Data.
9. scanning as claimed in claim 4 blocks, it is characterised in that described image display control chip is asic chip.
10. a kind of scanning card, including data input output circuit；Its feature is being that the scanning card also shows including image
Control chip, connects the data input output circuit；Described image display control chip includes physical layer transceiver IP kernel, number
Drive module is grouped according to parsing module, image processing module, image-driven module and multichannel；The physical layer transceiver IP kernel
For reception to be by the packet of data input output circuit input and unpacks；The data resolution module is used for unpacking
The view data for obtaining afterwards carries out the correspondence scanning cassette tape and carries the image interception of area size to obtain truncated picture data；
Described image processing module is used to be corrected truncated picture data process, the rearrangement of gray scale point discrete data to be processed
View data afterwards；Described image drive module is used to produce image display drive signals according to view data after the process；With
And the multichannel packet drive module is respectively used to enter described image display drive signals according to the rear end band load situation of oneself
Row packet transaction, so as to show with parallel TTL signal form or serial differential signals form output multi-channel packet diagram picture letter is driven
Number to described image display control chip outside；
Wherein, the multichannel packet diagram has identical control signal group and different display data groups as display drive signals,
The control signal group includes clock signal, latch signal, enables signal and row selection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220625.4A CN106652895B (en) | 2016-12-26 | 2016-12-26 | Scanning card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220625.4A CN106652895B (en) | 2016-12-26 | 2016-12-26 | Scanning card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106652895A true CN106652895A (en) | 2017-05-10 |
| CN106652895B CN106652895B (en) | 2019-01-29 |
Family
ID=58827833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611220625.4A Active CN106652895B (en) | 2016-12-26 | 2016-12-26 | Scanning card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106652895B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113744688A (en) * | 2021-11-04 | 2021-12-03 | 惠科股份有限公司 | Adapter plate and display panel |
| CN114639336A (en) * | 2020-12-15 | 2022-06-17 | 西安钛铂锶电子科技有限公司 | Display module assembly and display box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143315A (en) * | 2014-07-02 | 2014-11-12 | 深圳雷曼光电科技股份有限公司 | Method for reducing electromagnetic interference of LED display system and LED display system |
| 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 |
| 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 |
| CN205487273U (en) * | 2016-02-03 | 2016-08-17 | 西安诺瓦电子科技有限公司 | Led display screen control system and scanning card |
| CN106205464A (en) * | 2015-05-06 | 2016-12-07 | 西安诺瓦电子科技有限公司 | LED lamp panel, scanning card and combinative structure, LED display control system |
-
2016
- 2016-12-26 CN CN201611220625.4A patent/CN106652895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143315A (en) * | 2014-07-02 | 2014-11-12 | 深圳雷曼光电科技股份有限公司 | Method for reducing electromagnetic interference of LED display system and LED display system |
| CN106205464A (en) * | 2015-05-06 | 2016-12-07 | 西安诺瓦电子科技有限公司 | LED lamp panel, scanning card and combinative structure, LED display control system |
| 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 |
| 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 |
| CN205487273U (en) * | 2016-02-03 | 2016-08-17 | 西安诺瓦电子科技有限公司 | Led display screen control system and scanning card |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639336A (en) * | 2020-12-15 | 2022-06-17 | 西安钛铂锶电子科技有限公司 | Display module assembly and display box |
| CN114639336B (en) * | 2020-12-15 | 2024-05-07 | 西安钛铂锶电子科技有限公司 | Display module and display box |
| CN113744688A (en) * | 2021-11-04 | 2021-12-03 | 惠科股份有限公司 | Adapter plate and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106652895B (en) | 2019-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106652894A (en) | Led display screen control system | |
| CN106652893B (en) | LED display control system | |
| CN106782294B (en) | LED display control system | |
| CN204857144U (en) | Led display screen control system and sending card | |
| WO2022134560A1 (en) | Data transmission and receiving methods for display screen, and sending and receiving cards of display screen | |
| CN105788519B (en) | LED display screen system, data distributor, display control method | |
| CN205158877U (en) | LED display control card, LED lamp plate and LED display system | |
| CN105141877B (en) | A kind of chromacoder based on programming device | |
| CN100507997C (en) | LED display screen signal interconnection method | |
| CN105788521B (en) | LED display screen system and condition detection method | |
| CN106652897B (en) | LED display control system | |
| CN105047134A (en) | LED lamp panel, lamp panel module group, and LED display screen control system | |
| US20170018260A1 (en) | Display device, method for transmitting data packet, and led system | |
| CN109714621A (en) | A kind of multichannel dynamic video analogy method and its processing system that timing is configurable | |
| CN106652895A (en) | Scanning card | |
| CN106652896B (en) | Scanning card | |
| CN109429016A (en) | Display control program | |
| CN106782295B (en) | LED box | |
| CN106297650A (en) | A kind of New LED intelligence control system | |
| CN207458549U (en) | LED information display system | |
| CN101702848A (en) | Monoline driving circuit in series of LED decorative illumination | |
| CN209560975U (en) | Receive card and display system | |
| CN106652892B (en) | LED lamp panel module | |
| CN102760402A (en) | Signal interface circuit of LED (light-emitting diode) module and LED display device | |
| CN113781945A (en) | Display device drive control circuit assembly and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Nova Nebula Technology Co., Ltd. Address before: 710075 Qinfengge D District 401, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xian Novastar Electronic Technology Co., Ltd. |
|
| CP03 | Change of name, title or address |