CN106652897B - LED display control system - Google Patents
LED display control system Download PDFInfo
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- CN106652897B CN106652897B CN201611222054.8A CN201611222054A CN106652897B CN 106652897 B CN106652897 B CN 106652897B CN 201611222054 A CN201611222054 A CN 201611222054A CN 106652897 B CN106652897 B CN 106652897B
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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 display control system, and scanning card (40) includes the data input/output circuit (43) and image display control chip (20) being connected；Image display control chip (20) is preferably asic chip, is used to intercept the received image data of institute by data input/output circuit (43) reception supplemental characteristic and image data, according to supplemental characteristic, correct, resetting and gray scale is extracted and exported with generating driving signal group and showing data group and be converted into serial differential signals group to LED light template die group (50)；And LED light template die group (50) includes the string turn being connected and chipset (51) and driving chip group (53), string, which turns, and chipset (51) is used to receive serial differential signals group and carries out serial/parallel conversion send to driving chip group (53) to generate parallel TTL format driving signal group and display data group and performs image display driving.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
Existing LED display control system mainly includes sending card, scanning card and LED display, wherein scanning card
It is configured in each LED box, multiple LED boxes are spliced into a LED display.The display effect of LED display directly by
The scanning card (or LED display control panel, reception card) configured in each LED box determines.It is determined in LED box specification
In the case of, the performance parameter of LED display determines substantially, especially in universal driving chip LED display.
With the development of small spacing, the pixel for needing to scan cassette tape load increases, and scans that cassette tape width is limited to be led to not
So that big band is carried lower image still can perfectly show；The limitation of scanning card volume size also causes it can not be in smaller spacing
It is applied on LED display.
As shown in Figure 1, scanning card in existing LED display control system and LED light template die group and needing to cascade
LED light template die group and LED light template die group between the signal that transmits be mostly TTL single-ended signal, transmission medium is mostly multicore row
The interface of line, winding displacement and LED light template die group is mostly dual-in-line connector.
Furthermore existing scanning card technique Center for architecture part is FPGA, and all data receivers are completed inside FPGA
And distribution, the processing of image data, the extraction of gradation data, and not according to different LED box specifications, the output of different driving chip
With display data and driving signal, and be output to by signal enhancing output module the LED light template die group in LED box
On.
However, FPGA and its matched related device etc. cause volume bigger in existing scanning card, and need to shield body
Producer provides HUB plate (pinboard), increases the thickness of product, is unfavorable for the design of high density LED display.Scan the band of card
Width is limited can not to support very big band to carry.Universal driving chip is since its is cheap, although the time used is longer, still
Favor by client；For the LED box using universal driving chip, due to its drive characteristic, need ceaselessly
Output gray level data, however the RGB data group of FPGA output (display data) is limited, and it is relatively high to be unable to satisfy display effect requirement
Occasion.It is connected in addition, scanning and passing through winding displacement between the LED light template die group in card and LED box, existing signal transmission form
Have the following problems with connection type: 1) each single-ended signal needs to occupy single line core, causes the core quantity of winding displacement more,
By taking a routine 8 sweeps LED light template die group as an example, if desired two groups of RGB datas, in addition clock signal (CLK), latch signal
(LAT), the signals one such as enable signal (OE), row selection signal (A, B, C) share 12 single-ended signals, along at least one ground
Signal at least needs the winding displacement of 13 cores, however some are frequently present of in LED display industry using LED light template die group to access
The core limited amount system of winding displacement, multicore winding displacement are inconvenient；2) since winding displacement core is more, between winding displacement and LED light template die group
Connector contact point it is also more, single core is obstructed or poor contact abnormal, this reason bring that will lead to display
Failure accounts for significant proportion in LED display application failure；3) TTL signal because signal fading transmission apart from limited, usually not more than
2 meters are crossed, some applications need longer transmission range, thus TTL signal is difficult to be competent at；And 4) winding displacement transmission TTL believes
Number cause signal radiation larger, this is to LED display by EMC calibration tape come difficult.
Summary of the invention
Therefore, to overcome defect and deficiency in the prior art, the present invention proposes a kind of LED display control system.
Specifically, a kind of LED display control system that the embodiment of the present invention proposes, including swept described in scanning card and connection
Retouch the LED light template die group of card.The scanning card includes that the data input/output circuit being arranged on first circuit board and image are aobvious
Show control chip；Described image display control chip connects the data input/output circuit, for defeated by the data
Enter/output circuit receives supplemental characteristic and image data, intercepted according to the supplemental characteristic to the received image data of institute,
Correction, rearrangement and gray scale extraction are exported with generating driving signal group and showing data group and be converted into serial differential signals group to institute
State LED light template die group；The LED light template die group includes that the string of setting on the second circuit board turns simultaneously chipset and driving chip
Group, the string turns and chipset is for receiving the serial differential signals group and carrying out serial/parallel conversion to generate parallel TTL format
Driving signal group and parallel TTL format show data group, and the driving chip group connection string turns and chipset is according to institute
It states parallel TTL format driving signal group and parallel TTL format shows that data group performs image display.
In one embodiment of the invention, described image display control chip is asic chip.
In one embodiment of the invention, the serial differential signals group is LVDS signal group.
In one embodiment of the invention, described image display control chip includes: that differential signal transmits/receives module, number
According to link and major-minor port switching module, order group packet/unpacking module, parameter command module, image group packet/unpacking module, figure
As processing module, memory control module, image output mode adjustment module, image output driving module and display data are defeated
Module out；The differential signal transmits/receives module for receiving the order packet comprising the supplemental characteristic and comprising described image number
According to image data packet；The data link connect the differential signal with major-minor port switching module and transmits/receives module, for knowing
Other uplink and downlink data link switches and determines major-minor communication data port to complete input and output；Order group packet/the unpacking
Module connects the data link and major-minor port switching module, for being unpacked order packet to obtain parameter number
According to；The parameter command module connects the order group packet/unpacking module, described image processing module and described image and exports mould
Formula adjusts module, for the supplemental characteristic to be issued to described image processing module and described image output mode adjustment mould
Block；Described image group packet/unpacking module connects the data link and major-minor port switching module, for described image data
Packet is unpacked to obtain image data；Described image processing module connects described image group packet/unpacking module and the storage
Device control module, for carrying out the interception and the correct operation to described image data to obtain picture number after single treatment
According to；The memory control module is used for the reading and storage of data；Described image output mode adjusts module and connects the figure
As processing module and the memory control module, for being communicated with described image processing module and to the single treatment
Image data carries out the rearrangement and the gray scale extraction operation to obtain image data after secondary treatment afterwards；And described image
Output driving module and the display data outputting module are separately connected described image output mode adjustment module, for according to institute
Image data generates the driving signal group and the display data group respectively after stating secondary treatment.
In one embodiment of the invention, the scanning card further includes and turns string module, and connection described image output is driven
Dynamic model block and the display data outputting module are used for described image output driving module and the display data outputting module
The driving signal group and the display data group generated respectively is converted into serial differential signals group from parallel TTL format.
In one embodiment of the invention, a described and turn string module includes LVDS transmitter.
In one embodiment of the invention, described image output driving module and display data outputting module difference
The driving signal group and the display data group generated is that serial differential signals format driving signal group and serial differential are believed
Number format shows data group.
In one embodiment of the invention, it includes physical layer interface chip core that the differential signal, which transmits/receives module, and institute
Stating physical layer interface chip core includes two data transmission cores of major-minor.
In one embodiment of the invention, the data input/output circuit includes first port, the first signal shaping
Enhancing isolation circuit, second port and second signal shaping enhances isolation circuit, the first port and the second port point
Isolation circuit is enhanced by first signal shaping and connects the physics with second signal shaping enhancing isolation circuit
Layer interface chip core.
In one embodiment of the invention, the scanning card further includes the storage being arranged on the first circuit board
Device, and the memory control module of memory connection described image display control chip；Or described image is shown
Control integrated chip has dynamic RAM, and the dynamic RAM connects the memory control module.
From the foregoing, it will be observed that the embodiment of the present invention can reduce and sweep by proposing new LED display control system technical solution
The volume for retouching card facilitates the bandwidth for reducing image processing section, supports that band carries greatly, supports highly dense small spacing screen body；It is showing
The serial differential signals groups such as LVDS are used in the transmission process of data group and driving signal group, and signal is enabled to transmit more
Far and communicate more stable；And more data groups can be exported, it solves existing scanning and is stuck in universal driving chip LED display
The bad problem of display effect in body improves refresh rate and gray scale, achievees the purpose that improve LED display body display effect.With
The implementation of existing scanning card is compared, and not only can greatly be reduced via the scanning card that image display control chip is realized
The area of card is scanned, and facilitates user configuration driving method and display data output format to shorten the development cycle, saving is opened
Send out cost.
Through the following detailed description with reference to the accompanying drawings, other aspects of the invention and feature become obvious.But it should know
Road, which is only the purpose design explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
It points out outside, it is not necessary to which scale attached drawing, they only try hard to conceptually illustrate structure and process described herein.
Detailed description of the invention
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail.
Fig. 1 is the structure and connection relationship diagram of scanning card and LED light template die group in the prior art.
Fig. 2 is the schematic diagram of internal structure for being relevant to a kind of image display control chip of the embodiment of the present invention.
Fig. 3 A is the configuration diagram using the LED display control system of image display control chip shown in Fig. 2.
Fig. 3 B is the configuration diagram of the LED display control system of other embodiments of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Specifically, the following embodiments of the present invention propose a kind of new LED display control system technical solution, will scanning
Card function chip as far as possible supports that band carries greatly, supports the small spacing screen body of high density to reduce the volume of scanning card；It solves simultaneously
Certainly existing scanning is stuck in the problem that display effect is bad in universal driving chip screen body, improves the display effect of LED display；
And by using new transmission mode, reach and reduce winding displacement core quantity, improve the stability and reliability of transmission, reduces EMI,
More easily reach the requirement of EMC.
It referring to fig. 2, is a kind of internal junction of image display control chip applied to scanning card of the embodiment of the present invention
Structure schematic diagram.As shown in Fig. 2, the image display control chip 20 of the present embodiment includes: physical layer interface chip core 21, data-link
Road and major-minor port switching module 22, order group packet/unpacking module 23, parameter command module 24, image group packet/unpacking module
25, image processing module 26, memory control module 27, image output mode adjust module 28, image output driving module
29a, display data outputting module 29b and LVDS (Low Voltage Differential Signaling, low voltage difference
Signal) transmitter 29c.
Wherein, 21 primary recipient of physical layer interface chip core comes from the data packet of front controller (such as sending card) or incites somebody to action
Internal data is sent with data packet form, generally comprises two data transmission cores of major-minor；It is understood that physical layer connects
Mouth chip core 21 can be the differential signals such as kilomega network, 100,000,000 net PHY network chip cores and transmit/receive module, or even can also be it
His differential signal transmits/receives module such as SerDes module.
Data link connect physical layer interface chip core 21 with major-minor port switching module 22, mainly for identifying up and down
Row data link is switched with the input and output of completing port, and determines major-minor communication data port.
Order group packet/unpacking module 23 connects data link and major-minor port switching module 22, mainly completes front end control
The unpacking for the order packet that device processed issues and the data group packet for needing front controller are in case send.
24 bind command group packet of parameter command module/unpacking module 23, is mainly used for issuing supplemental characteristic to control LED
The display of LED light template die group in display screen；Specifically, the various parameters data that parameter command module 24 issues are for example comprising driving
Dynamic chip type (PWM type driving chip or universal driving chip), band load display area size, output display data (such as
RGB data) always organize number, the scanning mode (such as 8 sweep, 16 sweep, 32 sweep) of LED light template die group and the picture of LED light template die group
Plain wide high, scanning number, scanning decoded mode, driving method, data group number and cabling mode etc. information.
Image group packet/unpacking module 25 connects data link and major-minor port switching module 22, main to complete to picture number
According to the unpacking of packet, image data packet herein typically comprises field sync signal data and display data such as RGB data group.
Image processing module 26 connects image group packet/unpacking module 25 and parameter command module 24, mainly according to parameter
The supplemental characteristic that command module 24 issues is completed to unpack the picture number obtained after image data packet to image group packet/unpacking module 25
According to the processing such as being intercepted and corrected.Image data interception herein is, for example, the parameter number issued according to parameter command module 24
Carried out in display area size is carried, correction herein be, for example, inverse gamma (Gamma) correction, gamma correction and/
Or other correction such as chromaticity corrections.
Memory control module 27 mainly completes bus arbitration and function of data distribution, for realizing to memory 30
Data access；Memory control module 27 herein can be SDRAM or DDR control stone.
Image output mode adjusts module 28 and connects image processing module 26, parameter command module 24 and memory control mould
Block 27 is mainly communicated with image processing module 26 to obtain image data and root after the processing of the generation of image processing module 26
The supplemental characteristic issued according to parameter command module 24 for example export display data always organize number, LED light template die group scanning mode and
After cabling mode etc. carries out secondary treatment such as data rearrangement and gray scale extraction to image data after processing to obtain secondary treatment
Image data；Herein it is noted that the image data format as needed for different types of driving chip is different, for example, it is general
Type driving chip and the difference of image data format required for PWM type driving chip, thus need to carry out data rearrangement, that is,
Say data rearrangement typically according to the above-listed driving chip of rear end LED lamp plate mould group (such as universal driving chip or PWM type
Driving chip) needed for data format and LED lamp panel cabling information etc. carry out gradation data position rearrange and carry out splicing group
The operation such as conjunction；Furthermore due to needing that data are transformed into tonal gradation signal, thus needs to carry out gray scale and extract such as Bit points
The gradation data extracted after typically correction process from equal operation namely gray scale carries out lock out operation according to every Bit, will
Gradation data is transformed into such a way that different Bit differences realize weight；Furthermore image output mode adjustment module 28 obtains herein
There are two kinds of situations for image data after the processing for taking image processing module 26 to generate: one is directly defeated by image processing module 26
Image data adjusts module 28 to image output mode after handling out, and another kind is image after the processing of 26 informing of image processing module
The storage address of data in memory 30 adjusts module 28 to image output mode so that image output mode adjusts module 28
It is read by memory control module 27 from memory 30.
Image output driving module 29a connection image output mode adjusts module 28, is mainly used for being exported according to image
Image data generates driving signal group corresponding with driving chip after the secondary treatment that mode adjustment module 28 exports；Herein
Driving signal group is for example including clock signal (CLK), latch signal (LAT), enable signal (OE), row selection signal (A, B, C)
Deng.
It shows that data outputting module 29b connection image output mode adjusts module 28, is mainly used for being exported according to image
Display data group needed for image data generation meets target LED light template die group after the secondary treatment that mode adjustment module 28 exports
Such as multiple RGB data groups；LED light template die group herein typically comprises the driving chip of circuit board and setting on circuit boards
Group and multiple LED as display pixel.
LVDS transmitter 29c connection image output driving module 29a and display data outputting module 29b, is used for image
The display data group that the driving signal group and display data output film 29b that output driving module 29a is generated generate is turned parallel
Serial operation sends (such as sending to by flexible cable) target LED light template die group to obtain LVDS signal group.Herein, by
It is to send LED light template die group to LVDS differential signal in driving signal group and display data group, advantageously reduces winding displacement line
Core quantity improves the stability and reliability of transmission.Furthermore, it is to be understood that LVDS transmitter 29c can also be substituted for it
He parallel TTL signal can be converted into serial differential signals and turn string module.It is driven further, it is also possible to be exported directly to image
LVDS transmitter is respectively configured in dynamic model block 29a and display data outputting module 29b, so that image output driving module 29a energy
It is enough directly to generate RTCM-Radio Technical Commission for Maritime Services driving signal group and display data outputting module 29b is enabled directly to generate difference letter
Number format shows data group.
In addition, in other embodiments, memory 30 can also be integrated into inside image display control chip 20, such as
Shown in Fig. 3 B, to reduce chip pin.Herein, memory 30 is, for example, the dynamic RAMs such as SDRAM or DDR.
It is the embodiment of the present invention using a kind of LED display of image display control chip 20 shown in Fig. 2 referring to Fig. 3 A
The configuration diagram of control system.As shown in Figure 3A, LED display control system includes front controller (not shown), scanning
Card 40 and LED light template die group 50.Front controller can be the sending card of synchronous LED display screen control system, asynchronous LED is shown
The Asynchronism Card of screen control system, even host computer.
Scanning card 40 include: setting data input/output circuit 43 on circuit boards, image display control chip 20 with
And memory 30.Wherein, data input/output circuit 43 includes port 431a, and 431b and signal shaping enhance isolation circuit
433a,433b；Port 431a enhances the physical layer of isolation circuit 433a connection image display control chip 20 by signal shaping
Interface chip core 21；Similarly, port 431b enhances isolation circuit 433b connection image display control chip by signal shaping
20 physical layer interface chip core 21；Pass through data link in image display control chip 20 and major-minor port switching module 22
Work, in that case it can be decided that one of port 431a and port 431b as secondary port and determine end as master port, another one
Mouth 431a, 431b are input port or output port.Image display control chip 20 is preferably ASIC (Application
Specific Integrated Circuits, specific integrated circuit) chip, it is used for according in port 431a and port 431b
As master port input supplemental characteristic and image data, image data is intercepted according to supplemental characteristic, is corrected, is reset and
Gray scale extraction handles to obtain destination image data and is generated according to destination image data and export comprising driving signal group and show
Show the LVDS signal group of data group (such as multiple RGB data groups) so that LED light template die group 50 performs image display.Port 431a
It can be used for cascading next stage scanning card as secondary port person in the 431b of port.Memory 30 connects image display control chip
20 memory control module 27 completes image data to cooperate image processing module 26 and image output mode to adjust module 28
Processing operation.In addition, it is noted that the composite structure and end of port 431a and signal shaping enhancing isolation circuit 433a
The composite structure of mouth 431b and signal shaping enhancing isolation circuit 433b are to be connect in image display control chip 20 using physical layer
Mouth chip core 21 transmits/receives used data input/output circuit in the case of module, physical layer interface core as differential signal
Piece core 21 can be PHY network chip core or other differential signals transmit/receive module such as SerDes module, port 431a, 431b
The e.g. physical layer interfaces such as network interface, coaxial cable interface or optical fiber interface, signal shaping enhance isolation circuit 433a, 433b
Network transformer in this way or other match circuits.
LED light template die group 50 includes that the string of setting on circuit boards turns simultaneously chipset 51, driving chip group 53 and conduct
Multiple LED (not shown) of display pixel.Wherein, string turn and chipset 51 for self-scanning in future card 40 LVDS signal group into
Row serioparallel exchange is to obtain parallel TTL format driving signal group and parallel TTL format display data group and be supplied to driving chip
Group 53 performs image display, and string turns and chipset 51 is for example including one or more multichannel LVDS receivers, but the present invention is simultaneously
It is not limited.Driving chip group 53 is primarily referred to as column driving chip, has certainly including line driving chip (also referred to as row decoding core
Piece).
In conclusion the embodiment of the present invention can reduce and sweep by proposing new LED display control system technical solution
The volume for retouching card facilitates the bandwidth for reducing image processing section, supports that band carries greatly, supports highly dense small spacing screen body；It is showing
The differential signals such as LVDS are used in the transmission process of data group and driving signal group, enable signal transmit farther and
It communicates more stable；And more data groups can be exported, the existing scanning of solution, which is stuck in universal driving chip LED display body, to be shown
Show the bad problem of effect, improve refresh rate and gray scale, achievees the purpose that improve LED display body display effect.With it is existing
The implementation of scanning card is compared, and the scanning card realized via image display control chip not only can great reduced scanning card
Area, and facilitate user configuration driving method and display data output format to shorten the development cycle, save development cost.
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 display control system, the LED light template die group including scanning card (40) and the connection scanning card (40)
(50)；It is characterized in that,
The scanning card (40) includes the data input/output circuit (43) being arranged on first circuit board and image display control
Chip (20)；Described image display control chip (20) connects the data input/output circuit (43)；
Described image display control chip (20) includes: that differential signal transmits/receives module, data link and major-minor port switching module
(22), order group packet/unpacking module (23), parameter command module (24), image group packet/unpacking module (25), image procossing mould
Block (26), memory control module (27), image output mode adjustment module (28), image output driving module (29a) and
It shows data outputting module (29b)；
The differential signal transmits/receives module, for receiving the order comprising supplemental characteristic by the data input/output circuit
Packet and the image data packet comprising image data；
The data link connect the differential signal with major-minor port switching module (22) and transmits/receives module, for identification up and down
Row data link switches and determines major-minor communication data port to complete input and output；
The order group packet/unpacking module (23) connects the data link and major-minor port switching module (22), for institute
Order packet is stated to be unpacked to obtain supplemental characteristic；
The parameter command module (24) connect the order group packet/unpacking module (23), described image processing module (26) and
Described image output mode adjusts module (28), for the supplemental characteristic to be issued to described image processing module (26) and institute
State image output mode adjustment module (28)；
Described image group packet/unpacking module (25) connects the data link and major-minor port switching module (22), for institute
Image data packet is stated to be unpacked to obtain image data；
Described image processing module (26) connects described image group packet/unpacking module (25) and the memory control module
(27), for carrying out interception and correct operation to described image data to obtain image data after single treatment；
The memory control module (27) is used for the reading and storage of data；
Described image output mode adjusts module (28) connection described image processing module (26) and the memory control module
(27), for being communicated with described image processing module (26) and carrying out rearrangement and ash to image data after the single treatment
Extraction operation is spent to obtain image data after secondary treatment；And
Described image output driving module (29a) and the display data outputting module (29b) are separately connected described image output
Mode adjustment module (28), for generating driving signal group and display data group respectively according to image data after the secondary treatment
It is performed image display to the LED light template die group (50)；
The LED light template die group (50) includes that the string of setting on the second circuit board turns simultaneously chipset (51) and driving chip group
(53), the string turns and chipset (51) is for receiving serial differential signals group and carrying out serial/parallel conversion to generate parallel TTL lattice
Formula driving signal group and parallel TTL format show data group, and driving chip group (53) the connection string turns and chipset
(51) to show that data group performs image display according to the parallel TTL format driving signal group and parallel TTL format.
2. LED display control system as described in claim 1, which is characterized in that described image display control chip (20)
For asic chip.
3. LED display control system as described in claim 1, which is characterized in that the serial differential signals group is LVDS
Signal group.
4. LED display control system as described in claim 1, which is characterized in that the scanning card (40) further includes and turns
String module, connects described image output driving module (29a) and the display data outputting module (29b), is used for the figure
As output driving module (29a) and described data outputting module (29b) described driving signal group for generating respectively and described of showing
Show that data group is converted into serial differential signals group from parallel TTL format.
5. LED display control system as claimed in claim 4, which is characterized in that a described and turn string module includes LVDS hair
Send device (29c).
6. LED display control system as described in claim 1, which is characterized in that described image output driving module (29a)
The driving signal group and the display data group generated respectively with display data outputting module (29b) is serial differential
Signal format driving signal group and serial differential signals format show data group.
7. LED display control system as described in claim 1, which is characterized in that the differential signal transmits/receives module and includes
Physical layer interface chip core (21), and the physical layer interface chip core (21) includes two data transmission cores of major-minor.
8. LED display control system as claimed in claim 7, which is characterized in that the data input/output circuit (43)
It is whole including first port (431a), the first signal shaping enhancing isolation circuit (433a), second port (431b) and second signal
Shape enhances isolation circuit (433b), and the first port (431a) and the second port (431b) are believed by described first respectively
Number shaping enhancing isolation circuit (433a) and second signal shaping enhancing isolation circuit (433b) connection physical layer connect
Mouth chip core (21).
9. LED display control system as described in claim 1, which is characterized in that the scanning card (40) further includes setting
Memory (30) on the first circuit board, and the memory (30) connection described image display control chip (20)
The memory control module (27)；Or described image display control chip (20) is integrated with dynamic RAM, and institute
It states dynamic RAM and connects the memory control module (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222054.8A CN106652897B (en) | 2016-12-26 | 2016-12-26 | LED display control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222054.8A CN106652897B (en) | 2016-12-26 | 2016-12-26 | LED display control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106652897A CN106652897A (en) | 2017-05-10 |
| CN106652897B true CN106652897B (en) | 2019-08-23 |
Family
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| CN114845070A (en) * | 2018-10-17 | 2022-08-02 | 黄秀瑜 | LED video display system |
| CN109887452B (en) * | 2019-03-14 | 2024-06-18 | 山东中联防务科技有限公司 | Multifunctional display detection equipment for airplane |
| CN113448782B (en) | 2020-03-27 | 2022-05-13 | 长鑫存储技术有限公司 | Memory test method, storage medium and computer equipment |
| WO2024098298A1 (en) * | 2022-11-09 | 2024-05-16 | 西安诺瓦星云科技股份有限公司 | Led displaying control method, led display screen, control system therefor, and corresponding assembly |
| CN115620663B (en) * | 2022-12-14 | 2023-03-10 | 无锡新谷电子科技有限公司 | Programmable column signal control unit and control method for LED display screen |
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