CN106652896B - Scanning card - Google Patents
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- CN106652896B CN106652896B CN201611220630.5A CN201611220630A CN106652896B CN 106652896 B CN106652896 B CN 106652896B CN 201611220630 A CN201611220630 A CN 201611220630A CN 106652896 B CN106652896 B CN 106652896B
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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]
Abstract
The present invention proposes a kind of scanning card (40), is suitable for connecting with LED light template die group.The scanning card (40) includes: the input/output circuitry and image display control chip (20) of circuit board (41) and setting on the circuit board (41)；Described image display control chip (20) connects the input/output circuitry and for receiving order packet and image data packet by the input/output circuitry, being intercepted, corrected, reset and gray scale is extracted to export control signal group and show that data group to the LED light template die group is performed image display to unpacking the image data that described image data packet obtains according to unpacking supplemental characteristic that the order packet obtains, and described image display control chip (20) is preferably asic chip.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 the components in field of display technology more particularly to LED display control system.
Background technique
Existing LED display control system mainly includes sending card, scanning card and LED display, wherein scanning card
It is configured in each LED box, multiple LED boxes are spliced into a LED display.The display effect of LED display directly by
The scanning card (or LED display control panel, 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 control 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 scanning card.
Specifically, a kind of scanning card that the embodiment of the present invention proposes is suitable for connecting with LED light template die group.The scanning card
It include: circuit board and the input/output circuitry being arranged on the circuit board and image display control chip；Described image is shown
It controls chip and connects the input/output circuitry and for receiving order packet and image data by the input/output circuitry
Packet is cut according to the supplemental characteristic that the unpacking order packet obtains to the image data that described image data packet obtains is unpacked
It takes, correct, resetting and gray scale is extracted to export control signal group and display data group to LED light template die group progress image and show
Show, described image display control chip is asic chip.
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 and described image data packet；The data link with
Major-minor port switching module connects the differential signal and transmits/receives module, and uplink and downlink data link is defeated to complete to input for identification
Switch and determine major-minor communication data port out；The order group packet/unpacking module connects the data link and major-minor end
Mouth switching module, for being unpacked order packet to obtain supplemental characteristic；The parameter command module connects the life
Group packet/unpacking module, described image processing module and described image output mode adjustment module are enabled, is used for the supplemental characteristic
It is issued to described image processing module and described image output mode adjustment module；Described image group packet/unpacking module connects institute
Data link and major-minor port switching module are stated, for being unpacked described image data packet to obtain image data；It is described
Image processing module connects described image group packet/unpacking module and the memory control module, for described image data
The interception and the correct operation are carried out to obtain image data after single treatment；The memory control module is used for data
Reading and storage；Described image output mode adjusts module connection described image processing module and the memory controls mould
Block, for communicated with described image processing module and to after the single treatment image data carry out it is described rearrangement and it is described
Gray scale extraction operation is to obtain image data after secondary treatment；And described image output driving module and the display data it is defeated
Module is separately connected described image output mode adjustment module out, for being generated respectively according to image data after the secondary treatment
The control signal group and the display data group.
In one embodiment of the invention, the differential signal transmit/receive module include physical layer interface chip core for example
PHY network chip core, and the physical layer interface chip core includes two data transmission cores of major-minor.
In one embodiment of the invention, the input/output circuitry includes first port, the first signal shaping enhancing
Isolation circuit, second port and second signal shaping enhance isolation circuit, and the first port and the second port are led to respectively
It crosses first signal shaping enhancing isolation circuit and connects the physical layer with second signal shaping enhancing isolation circuit and connect
Mouth chip core.
In one embodiment of the invention, the correction includes in anti-gamma correction, gamma correction and chromaticity correction
At least partly correct.
In one embodiment of the invention, the control signal group and the display data group are differential signalling form.
In one embodiment of the invention, the scanning card further includes the memory being arranged on the circuit board, institute
State the memory control module of memory connection described image display control chip.
In one embodiment of the invention, described image display control chip is integrated with dynamic RAM, and institute
It states dynamic RAM and connects the memory control module.
In addition, a kind of scanning card that another embodiment of the present invention proposes, is suitable for connecting with LED light template die group.The scanning
Card includes: circuit board and the input/output circuitry being arranged on the circuit board and image display control chip；Described image is aobvious
Show that control chip connects the input/output circuitry and for receiving order packet and picture number by the input/output circuitry
It is cut according to packet, according to the supplemental characteristic that the unpacking order packet obtains to the image data that described image data packet obtains is unpacked
It takes, correct, resetting and gray scale is extracted to export control signal group and display data group to LED light template die group progress image and show
Show.Wherein, described image display control chip includes: that differential signal transmits/receives module, data link and major-minor port switching mould
Block, order group packet/unpacking module, parameter command module, image group packet/unpacking module, image processing module, memory control mould
Block, image output mode adjustment module, image output driving module and display data outputting module；The differential signal receipts/
Hair module is for receiving the order packet and described image data packet；The data link connect institute with major-minor port switching module
It states differential signal and transmits/receives module, uplink and downlink data link communicates for identification to complete input and output switching and determining major-minor
Data port；The order group packet/unpacking module connects the data link and major-minor port switching module, for the life
Packet is enabled to be unpacked to obtain supplemental characteristic；The parameter command module connects the order group packet/unpacking module, described image
Processing module and described image output mode adjust module, for by the supplemental characteristic be issued to described image processing module and
Described image output mode adjusts module；Described image group packet/unpacking module connects the data link and major-minor port switching
Module, for being unpacked described image data packet to obtain image data；Described image processing module connects described image
Group packet/unpacking module and the memory control module are grasped for carrying out the interception and the correction to described image data
Make to obtain image data after single treatment；The memory control module is used for the reading and storage of data；Described image is defeated
Mode adjustment module connection described image processing module and the memory control module out, are used for and described image processing module
It carries out communication and the rearrangement and the gray scale extraction operation is carried out to obtain secondary place to image data after the single treatment
Image data after reason；And to be separately connected described image defeated for described image output driving module and the display data outputting module
Mode adjustment module out, for generating the control signal group and the display respectively according to image data after the secondary treatment
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；The input/output circuitry includes first port, the first letter
Number shaping enhancing isolation circuit, second port and second signal shaping enhance isolation circuit, the first port and described second
Port enhances isolation circuit by first signal shaping respectively and connects institute with second signal shaping enhancing isolation circuit
State physical layer interface chip core.
From the foregoing, it will be observed that the scanning card technique scheme that the embodiment of the present invention is new by proposition, can reduce the volume of scanning card,
Facilitate the bandwidth of reduction image processing section, supports that band carries greatly, the highly dense small spacing screen body of support；And more data can be exported
It is bad to solve the problems, such as that existing scanning is stuck in display effect in universal driving chip LED display body for group, improve refresh rate and
Gray scale achievees the purpose that improve LED display body display effect.Compared with the implementation of existing scanning card, via image
The scanning card that display control chip is realized not only can great reduced scanning card area, but also facilitate user configuration driving side
Formula and data output format save development cost to shorten the development cycle.
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 structural schematic diagram using the scanning card of image display control chip shown in Fig. 2.
Fig. 3 B is the structural schematic diagram of the scanning card 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 scanning card technique scheme, by scanning card function core as far as possible
Piece reduces the volume of scanning card to solve the problems in existing LED display control system, supports that band carries greatly, supports high
The small spacing screen body of density；It solves the problems, such as that existing scanning is stuck in universal driving chip screen body that display effect is bad simultaneously, mentions
The display effect of high LED display；And by using new transmission mode, reaches and reduce winding displacement core quantity, improve transmission
Stability and reliability reduce 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
And display data outputting module 29b.
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 that typically (such as universal driving chip or PWM type drive data rearrangement according to the above-listed driving chip of rear end LED light template die group
Dynamic chip) needed for data format and LED lamp panel cabling information etc. carry out gradation data position and rearrange and spliced and combined
Deng operation；Furthermore due to needing that data are transformed into tonal gradation signal, thus needs to carry out gray scale and extract such as Bit separation
Deng operation, that is to say, that the gradation data that gray scale extracts after typically correction process carries out lock out operation according to every Bit, with
Gradation data is transformed into such a way that different Bit differences realize weight；Furthermore image output mode adjusts module 28 herein
There are two kinds of situations for image data after obtaining the processing that image processing module 26 generates: one is direct by image processing module 26
Image data gives image output mode adjustment module 28 after exporting processing, and another kind is schemed after 26 informing of image processing module is handled
As the storage address of data in memory 30 adjusts module 28 to image output mode so that image output mode adjusts module
28 are 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 control signal group corresponding with driving chip after the secondary treatment that mode adjustment module 28 exports；Herein
Signal group is controlled 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.
Moreover it is preferred that image output driving module 29a and display data outputting module 29b are respectively with differential signal side
Formula output control signal group and display data group improve the stability and reliability of transmission in favor of reducing winding displacement core quantity.
Differential signal mode herein is, for example, that (Low Voltage Differential Signaling, low-voltage are poor for LVDS signal
Sub-signal) or other signal formats.
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.
Referring to Fig. 3 A, a kind of scanning card of image display control chip 20 shown in Fig. 2 is used for the embodiment of the present invention
Structural schematic diagram.As shown in Figure 3A, port 43a, 43b, letter that card 40 includes: circuit board 41 and is arranged on circuit board 41 are scanned
Number shaping enhances isolation circuit 45a, 45b, image display control chip 20 and memory 30.Wherein, port 43a passes through signal
The physical layer interface chip core 21 of shaping enhancing isolation circuit 45a connection image display control chip 20；Similarly, port 43b
Enhance the physical layer interface chip core 21 of isolation circuit 45b connection image display control chip 20 by signal shaping；Pass through figure
As the work of data link and major-minor port switching module 22 in display control chip 20, in that case it can be decided that port 43a and port 43b
One of them as secondary port and determines port 43a as master port, another one, and 43b is input port or output port.
Image display control chip 20 is preferably ASIC (Application Specific Integrated Circuits, dedicated collection
At circuit) chip, it is used for according to the supplemental characteristic and image data in port 43a and port 43b as master port input, root
Image data is intercepted according to supplemental characteristic, is corrected, is reset and gray scale extraction handle to obtain destination image data and according to
Destination image data generates and exports control signal group and display data group (such as multiple RGB data groups).The control exported herein
Signal group processed and display data group can in a manner of parallel signal by winding displacement be transmitted to target LED light template die group and also with
Differential signal mode is transmitted to target LED light template die group and performs image display.As secondary port person in port 43a and port 43b
It can be used for cascading next stage scanning card.Memory 30 connects the memory control module 27 of image display control chip 20 to match
It closes image processing module 26 and image output mode adjustment module 28 completes image real time transfer operation.In addition, be worth mentioning
It is the composite structure and port 43b and signal shaping enhancing isolation electricity of port 43a and signal shaping enhancing isolation circuit 45a
The composite structure of road 45b is transmitted/received using physical layer interface chip core 21 as differential signal in image display control chip 20
Used data input/output circuit in the case of module, physical layer interface chip core 21 can be PHY network chip core or
Other differential signals transmit/receive module such as SerDes module, and port 43a, 43b are, for example, network interface, coaxial cable interface or optical fiber
The physical layer interfaces such as interface, signal shaping enhance isolation circuit 45a, and 45b is, for example, network transformer or other match circuits.
In conclusion the scanning card technique scheme that the embodiment of the present invention is new by proposition, can reduce the volume of scanning card,
Facilitate the bandwidth of reduction image processing section, supports that band carries greatly, the highly dense small spacing screen body of support；And more data can be exported
It is bad to solve the problems, such as that existing scanning is stuck in display effect in universal driving chip LED display body for group, improve refresh rate and
Gray scale achievees the purpose that improve LED display body display effect.Compared with the implementation of existing scanning card, via image
The scanning card that display control chip is realized not only can great reduced scanning card area, but also facilitate user configuration driving side
Formula and data output format save development cost to shorten the development cycle.
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 scanning blocks (40), it is suitable for connecting with LED light template die group；It is characterized in that, the scanning card (40) includes: circuit
Plate (41) and the input/output circuitry and image display control chip (20) being arranged on the circuit board (41)；Described image
Display control chip (20) connects the input/output circuitry；Described image display control chip (20) is asic chip, described
Image display control chip (20) includes: that differential signal transmits/receives module, data link and major-minor port switching module (22), life
Enable 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 adjustment module (28), image output driving module (29a) and display data
Output module (29b)；
The differential signal transmits/receives module for receiving order packet and image data packet by the input/output circuitry；
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 control 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.
2. scanning card (40) as described in claim 1, which is characterized in that it includes physical layer that the differential signal, which transmits/receives module,
Interface chip core (21), and the physical layer interface chip core (21) includes two data transmission cores of major-minor.
3. scanning card (40) as claimed in claim 2, which is characterized in that the input/output circuitry includes first port
(43a), the first signal shaping, which enhance isolation circuit (45a), second port (43b) and second signal shaping, enhances isolation circuit
(45b), the first port (43a) and the second port (43b) enhance isolation electricity by first signal shaping respectively
Road (45a) and second signal shaping enhancing isolation circuit (45b) connect the physical layer interface chip core (21).
4. scanning card (40) as described in claim 1, which is characterized in that the correction includes anti-gamma correction, gamma correction
With at least partly correction in chromaticity correction.
5. scanning card (40) as described in claim 1, which is characterized in that the control signal group and the display data group are
Differential signalling form.
6. scanning card (40) as described in claim 1, which is characterized in that the scanning card (40) further includes being arranged in the electricity
Memory (30) on road plate (41), the memory of memory (30) connection described image display control chip (20)
Control module (27).
7. scanning card (40) as described in claim 1, which is characterized in that described image display control chip (20) is integrated with dynamic
State random access memory, and the dynamic RAM connects the memory control module (27).
8. a kind of scanning blocks (40), it is suitable for connecting with LED light template die group；It is characterized in that, the scanning card (40) includes: circuit
Plate (41) and the input/output circuitry and image display control chip (20) being arranged on the circuit board (41)；Described image
Display control chip (20) connect the input/output circuitry and for by the input/output circuitry receive order packet and
Image data packet, the image data that unpacking described image data packet is obtained according to the supplemental characteristic that the unpacking order packet obtains
It intercepted, corrected, being reset and gray scale is extracted to export control signal group and display data group to the LED light template die group and carry out
Image is shown；
Wherein, described image display control chip (20) includes: that differential signal transmits/receives module, data link and major-minor port and cuts
Change the mold block (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) and display data outputting module (29b)；
The differential signal transmits/receives module for receiving the order packet and described image data packet；
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 the interception and the 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 the rearrangement to image data after the single treatment
And the gray scale extraction operation is 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 the control signal group and described aobvious respectively according to image data after the secondary treatment
Show data group.
9. scanning card (40) as claimed in claim 8, which is characterized in that it includes physical layer that the differential signal, which transmits/receives module,
Interface chip core (21), and the physical layer interface chip core (21) includes two data transmission cores of major-minor；The input/output
Circuit includes that first port (43a), the first signal shaping enhancing isolation circuit (45a), second port (43b) and second signal are whole
Shape enhances isolation circuit (45b), and the first port (43a) and the second port (43b) pass through first signal respectively
Shaping enhances isolation circuit (45a) and second signal shaping enhancing isolation circuit (45b) connects the physical layer interface core
Piece core (21).
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| CN107731154B (en) * | 2017-10-12 | 2020-02-21 | 深圳市奥拓电子股份有限公司 | LED display screen data backup device and method and terminal equipment |
| CN113205767B (en) * | 2021-04-29 | 2022-11-01 | 北京集创北方科技股份有限公司 | Data access adjustment method, display drive chip, electronic device, and storage medium |
| CN115424568A (en) * | 2022-08-29 | 2022-12-02 | 昆山万力微电子有限公司 | Programmable row signal control unit, chip and control method |
| 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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