CN106921884A - Display control card and display control method - Google Patents
Display control card and display control method Download PDFInfo
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- CN106921884A CN106921884A CN201710289470.8A CN201710289470A CN106921884A CN 106921884 A CN106921884 A CN 106921884A CN 201710289470 A CN201710289470 A CN 201710289470A CN 106921884 A CN106921884 A CN 106921884A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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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]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/202—Gamma control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present embodiments relate to a kind of display control card and display control method, particular video frequency frame is generated inside display control card under the field sync signal effect of outside input video for it and realization shows on a display screen, realizes that different content is played in display screen area display with when different regions are relayed.
Description
Technical field
The present invention relates to display control technology field, more particularly to a kind of display control card and a kind of display control side
Method.
Background technology
In environment of some LED screens as background, such as football pitch etc., LED screen is mainly as a kind of advertisement
Carrier application.In existing system, the advertisement of on-the-spot broadcasting and the advertisement of television relay are the same, due to different regions
Product differentiation, the advertisement of on-the-spot broadcasting differs in the television relay of different regions and surely plays the effect of advertisement.
The advertisement that television relay so for different regions is accomplished by be shown on LED display replaces with different regions
Advertisement.The direct advertisement broadcasting chamber of commerce makes a call to a special picture when LED display shows, so that by phase when television relay
The region answered replaces with corresponding advertisement.Scene video source with 120HZ (or 100HZ) video input, wherein having one in every 2 frame
Frame is the frame of video of the advertisement of on-the-spot broadcasting, and a frame is the particular video frequency frame of insertion in addition, and the particular video frequency frame of insertion is in TV
Corresponding advertisement can be replaced by when relay, and this 2 kinds of video sources are all the videos of 60HZ (or 50HZ).So, if
Do not processed, because the broadcasting content of 2 frames is different, audience can be caused to feel that LED screen flicker, human eye are not relaxed
Clothes；Then just propose to make camera shutter time short in recording process at the scene, so that the particular video frequency frame of insertion
Can be very short, so have little influence on reach on the basis of audience replace LED display in the ad content played
Effect.
Specifically, referring to Fig. 1, content plays (content playout) device and video source output is for example sent out to controller
Card feed, is processed vision signal output to reception video source by controller after (such as decoded, Video segmentation etc.)
In card, then the LED drive chip in LED display is driven to allow LED display to carry out picture to show by receiving card.Played in content
There is synchronizing signal to synchronize between device and video camera, such that it is able to adjust the time for exposure one of particular video frequency frame and video camera
Cause, by the particular video frequency frame duration for controlling live commercial frame of video duration and insertion so that video camera can just be by insertion
Particular video frequency intercepts out, conveniently replaces with the advertisement video of locality.
Referring to Fig. 2, the left side exports 2 frames in an alternating manner for content player, the right for deliver to LED display show this 2
Frame；Wherein, the particular video frequency frame of the rectangle frame correspondence insertion of oblique line filling, the part correspondence live commercial video of non-oblique line filling
Frame.When LED display shows, initial display time (or frame display phase) of the particular video frequency frame of insertion and aobvious
Show that time length (or frame display duration) is adjustable；Xi'an Novastar Electronic Technology Co., Ltd. be for details, reference can be made at 2016 02
Application No. 201610077585.6 filed in month 03 day, it is entitled " receiving card, LED display controls and recording system,
The Chinese invention application of LED display control methods ".However, the scheme being alternately input into mainly for 2 frames shown in Fig. 2, causes band to carry
It is less than normal.
The content of the invention
Therefore, the embodiment of the present invention proposes a kind of display control card and a kind of display control method, to overcome 2 frames to replace
With the problem that load is less than normal in input scheme.
On the one hand, there is provided a kind of display control card, including image receiver module and described image receiver module connection
First image-driven module, internal particular video frequency frame generation module, the second image-driven module, MUX and frame show
Phase and duration adjustment module；Wherein, the second image-driven module connection internal particular video frequency frame generation module, institute
MUX connection described first image drive module and the second image-driven module are stated, the MUX is used for
Receive the two-path video frame of described first image drive module and the second drive module synchronism output and shown in the frame
The two-path video frame is alternately exported under the control of the frame selection signal that phase and duration adjustment module are produced.
Another further aspect, there is provided a kind of display control card, including PLD；In the PLD
Image receiver module and internal particular video frequency frame generation module are configured with, described image receiver module is used to receive the first frame frequency
Input video frame, the internal particular video frequency frame generation module is locally given birth under the field sync signal effect of the input video frame
Into particular video frequency frame, and the input video frame and the particular video frequency frame are with the second frame frequency of twice first frame frequency
Alternately exported to outside from the PLD.
On the other hand, there is provided a kind of display control method, be applied to a kind of display control card；The display control method
Including step：Receive outside input frame of video；Local generation particular video frequency frame；To the outside input frame of video with the first frame frequency
Output driving is carried out, and image procossing was carried out before output driving is carried out to the outside input frame of video；To described specific
Frame of video synchronizes output driving with first frame frequency with the outside input frame of video；Frame selection signal is produced, wherein
The frame selection signal is used to determine the display phase and display duration of the particular video frequency frame；And in the frame selection signal
Control under to synchronizing the outside input frame of video and the particular video frequency frame of output driving with first frame frequency
Selectivity output is carried out to complete the video frequency output of the second frame frequency.
A technical scheme in above-mentioned technical proposal has the following advantages that or beneficial effect：Generated on display control card
The technical scheme of particular video frequency frame and realization particular video frequency frame display duration and phase-adjustable section when display screen shows, Ke Yida
Display screen is realized showing as background applications, on the basis of audience is not influenceed to display screen impression into live recording process
The purpose of particular video frequency frame display length and display phase-adjustable section when display screen shows, so as to solve reality when different regions are relayed
Existing this problem of display screen area display broadcasting different content.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be in embodiment or description of Related Art
The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some realities of the invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the configuration diagram of a kind of LED display controls and live recording system；
Fig. 2 realizes the process status schematic diagram of frame display phase offset and frame display duration regulation for system shown in Figure 1；
Fig. 3 is a kind of principle schematic of display control card that the embodiment of the present invention is proposed；
Fig. 4 implements block diagram for one kind of display control card shown in Fig. 3；
Fig. 5 is the sequential that display control card shown in Fig. 4 realizes the selectively output of outside input frame of video and particular video frequency frame
Figure；
Fig. 6 implements block diagram for the another kind of display control card shown in Fig. 3.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Audience can be caused to feel that LED shows for alternately the broadcasting content of 2 frames of input is different in correlation technique
Flicker, human eye are uncomfortable during screen display, and correlation technique proposes to make camera shutter time short when recording at the scene, so that can
With allow particular video frequency frame very short so that have little influence on the basis of audience reach replacement LED display in
The effect of the ad content of broadcasting；The embodiment of the present invention proposes directly to produce particular video frequency on display control card such as receiving card
Frame and show that phase and duration are adjustable when realizing that it shows on LED display.
Specifically, referring to Fig. 3, it is a kind of principle schematic of display control card that the embodiment of the present invention is proposed.In Fig. 3
In, the display control card of the present embodiment includes：Image receiver module, internal particular video frequency frame generation module, two-way image-driven
Module, MUX and frame display phase and duration adjustment module；Wherein image receiver module is regarded for receiving outside input
Frequency frame, internal particular video frequency frame generation module is used to produce internal generation special under the field sync signal effect of outside input video
Determine frame of video, two-way image-driven module connects image receiver module and internal particular video frequency frame generation module with by outside respectively
Input video frame and internal generation particular video frequency frame synchronization are exported to MUX and shown with alternately output to outside, from
And internal generation particular video frequency frame is in periodicity output display feature；Frame shows that phase and duration adjustment module are used to produce frame to select
Signal is selected as the control signal of MUX to control the internal display phase and duration for generating particular video frequency frame.
Referring to Fig. 4, it is that one kind of display control card shown in Fig. 3 implements block diagram.In fig. 4 it is shown that control card 40
Such as receiving card includes that image receiver module 41a, internal particular video frequency frame generation module 41b, image conversion and gray scale extract mould
Block 42, image-driven module 44 and 45, memory access control module 46, frame display phase and duration adjustment module 47, multichannel
Selector (Mux) 48 and parameter module 49, its be preferably be incorporated into it is many in same PLD such as FPGA
Individual functional module.
Wherein, to be used for the receiving front-end controller frame of video that for example sending card transmission comes (or outer for image receiver module 41a
Portion's input video frame) data and memory such as SDRAM (not shown) stored by memory access control module 36.
The order or local register that internal particular video frequency frame generation module 41b is used to be sent according to front controller are matched somebody with somebody
Put the content that defines and generate a frame data and used as particular video frequency frame, the particular video frequency frame of generation (or internal generation is regarded
Frequency frame or the local generation frame of video of title) can be transmitted directly to be used in image-driven module 45；Implementing shown in Fig. 4
In example, the frame frequency of input video is 50HZ, but the present invention is not limited thereto, or other frame frequency sizes such as 60HZ；
Inside generation frame of video is the monochrome video frame such as primary colours frame of video such as red, green, blueness and be preferably up to gray scale monochrome
Frame of video, in order to recognize.
Image conversion and gray scale abstraction module 42 complete the image of outside input frame of video under the field sync signal of 50HZ
Treatment, the initial data for reading outside input frame of video from memory specifically by memory access control module 46 is then
Gamma (Gamma) conversion, gray scale is completed to extract the even function such as correction such as brightness or bright chroma correction and pass through memory again
Access control module 46 is stored in memory；Gray scale extracts the e.g. operation such as Bit separation herein, that is to say, that gray scale is extracted
Typically the gradation data after correction process according to every Bit (position) carry out lock out operation with by gradation data be transformed into according to
Different Bit differences realize the mode of weight.
Display synchronization signal is configured between two image-driven modules 44,45 drive synchronous, figure to carry out display output
As drive module 44 is used to carry out outside input video frame output driving, image-driven module 45 is used for inside generation video
Frame (namely particular video frequency frame of local generation) carries out output driving.As can be seen here, the area of the two image-driven modules 44,45
It is not the difference of input source, image-driven module 44 needs to read warp from memory by memory access control module 46
Image is converted and gray scale abstraction module 42 carries out the data of the outside input frame of video after image procossing and carries out output driving, and
The data that image-driven module 45 directly obtains particular video frequency frame from internal particular video frequency frame generation module 41b carry out output drive
It is dynamic.
Frame shows the parameter output frame selection signal that phase and duration adjustment module 47 are issued according to parameter module 49, to figure
As the driving output of drive module 44,45 is selected, finally the output port in MUX 48 realizes the video of 100HZ
Output；Herein, the parameter that parameter module 39 is issued is for example comprising the aobvious of the particular video frequency frame for storing in the nonvolatile memory
Show the parameter such as phase pushing figure and display duration.Herein it is understood that parameter module 49 be disposed to convenient setting/
The parameters such as the display phase pushing figure and display duration of particular video frequency frame are adjusted, can also be omitted under some application scenarios certainly
Parameter module 49 and the display phase pushing figure of particular video frequency frame and aobvious is preset in frame shows phase and duration adjustment module 47
Show the parameters such as duration.
Hold above-mentioned, as shown in figure 5, outside input frame of video (being labeled as frame A) is with particular video frequency frame (being labeled as frame B) respectively
Exported in two image-driven modules 44,45, select output to realize 100HZ's the frame of video of 50HZ by frame selection signal
Video frequency output；Such as when frame selection signal is logical one output particular video frequency frame (inside generation frame of video) namely frame B, other
Moment exports outside input frame of video namely frame A.VS is field sync signal rising edge in Fig. 5, and VS1 is the display starting point of frame B
(also one of frame A display end point), for the display end point of frame B, (another of also frame A shows VS2
Initial point).Had also been found that from Fig. 5：Output display time of the output display time of frame B less than frame A.
Referring to Fig. 6, it is that the another kind of display control card shown in Fig. 3 implements block diagram.In figure 6, display control card
60 such as receiving cards include：Image receiver module 61a, internal particular video frequency frame generation module 61b, image conversion and gray scale are extracted
Module 62 and 63, image-driven module 64 and 65, memory access control module 66, frame display phase and duration adjustment module
67th, MUX (Mux) 68 and parameter module 69, it is preferably the multiple being incorporated into same PLD
Functional module.
Wherein, to be used for the receiving front-end controller frame of video that for example sending card transmission comes (or outer for image receiver module 61a
Portion's input video frame) data and memory such as SDRAM (not shown) stored by memory access control module 56.
The pixel data of the specified location that internal particular video frequency frame generation module 61b is used in outside input frame of video
Such as some specified pixel data syn-chronization generate a frame data used as particular video frequency frame, the particular video frequency frame that generates (or
Claim internal generation frame of video or into local generation frame of video) data stored by memory access control module 66 and arrive
In memory；In the embodiment shown in fig. 6, the frame frequency of input video be 50HZ, but the present invention be not limited thereto, or
Other frame frequency sizes such as 60HZ；Furthermore, inside generation frame of video herein is by specifying thus according to outside input frame of video
Pixel data (such as single pixel data) generation, thus can in real time be changed according to the data of outside input frame of video.
Image is converted and gray scale abstraction module 62,63 is respectively completed outside input frame of video under the field sync signal of 50HZ
With inside generation frame of video (particular video frequency frame) image procossing, specially：Image is converted and gray scale abstraction module 62 is by depositing
Reservoir access control module 66 reads the initial data of outside input frame of video from memory and then completes gamma (Gamma) change
Change, gray scale extracts the even function such as correction such as brightness or bright chroma correction and is stored by memory access control module 66 again
To in memory；Image conversion and gray scale abstraction module 63 are read specific by memory access control module 66 from memory
Then the data of frame of video complete the work(such as gamma (Gamma) conversion, gray scale are extracted or even correction such as brightness or bright chroma are corrected
During and memory can be stored by memory access control module 66 again.Gray scale extracts the e.g. operation such as Bit separation herein,
That is gray scale extracts the gradation data after being typically correction process and carries out lock out operation with by ash according to every Bit (position)
Degrees of data is transformed into the mode that weight is realized according to different Bit differences.
Display synchronization signal is configured between two image-driven modules 64,65 drive synchronous, figure to carry out display output
As drive module 64 is used to carry out outside input video frame output driving, image-driven module 65 is used for inside generation video
Frame (namely local generation particular video frequency frame) carries out output driving.Specially：Image-driven module 64 is needed by memory access
Ask that control module 66 reads the outside input after carrying out image procossing through image conversion and gray scale abstraction module 62 from memory
The data of frame of video simultaneously carry out output driving, and image-driven module 65 is needed by memory access control module 66 from memory
The data of the middle inside generation frame of video read after carrying out image procossing through image conversion and gray scale abstraction module 63 are simultaneously carried out defeated
Go out to drive.
Frame shows the parameter output frame selection signal that phase and duration adjustment module 67 are issued according to parameter module 69, to figure
As the output of drive module 64,65 is selected, finally the output port in MUX 68 realizes that the video of 100HZ is defeated
Go out；Herein, the display of particular video frequency frame of the parameter that parameter module 69 is issued for example comprising storage in the nonvolatile memory
The parameter such as phase pushing figure and display duration.Herein it is understood that the convenience that is disposed to of parameter module 69 sets/adjusts
The parameters such as the display phase pushing figure and display duration of particular video frequency frame are saved, ginseng can also be omitted under some application scenarios certainly
Digital-to-analogue block 69 and display phase pushing figure and the display of particular video frequency frame are preset in frame shows phase and duration adjustment module 67
The parameters such as duration.
In sum, present invention proposes the local generation particular video frequency on display control card such as receiving card
The technical scheme of frame and realization particular video frequency frame display duration and phase-adjustable section when LED display shows, can reach existing
LED display is realized as background applications, on the basis of not influenceing audience to experience LED display in the recording process of field
The purpose of particular video frequency frame display length and display phase-adjustable section when LED display shows, so as to solve different regions turn
Sowing time realizes that different content this problem is played in the display of LED display region.
Finally it is worth mentioning that the foregoing display control card for referring to is not limited to receiving card, or is integrated with hair
The asynchronous control-card of card feed and receiving card function, even for the display control card of drive control other types display screen, only
It is to be locally generated particular video frequency frame and carry out the particular video frequency frame and outside input frame of video of local generation alternately defeated to want it
Go out and make particular video frequency frame to present periodically export and display feature, all should belong in protection scope of the present invention.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function can have other dividing mode, such as multichannel unit or component when actually realizing
Can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other for discussing or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multichannel
On NE.Some or all of unit therein can be according to the actual needs selected to realize the mesh of this embodiment scheme
's.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can store and be deposited in an embodied on computer readable
In storage media.Above-mentioned SFU software functional unit storage is in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the portion of each embodiment methods described of the invention
Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various can store
The medium of program code.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (14)
1. a kind of display control card, including image receiver module and the first image being connected with described image receiver module drive
Dynamic model block；Characterized in that, the display control card also includes：Internal particular video frequency frame generation module, the second image-driven mould
Block, MUX and frame display phase and duration adjustment module；Wherein, the second image-driven module connection is described interior
Portion's particular video frequency frame generation module, the MUX connects described first image drive module and second image-driven
Module, the MUX is used to receive the two of described first image drive module and the second drive module synchronism output
Road frame of video simultaneously regards the two-way under the control that the frame shows the frame selection signal that phase and duration adjustment module are produced
Frequency frame is alternately exported.
2. display control card as claimed in claim 1, it is characterised in that also include：Memory access control module and with institute
State image conversion and the gray scale abstraction module of memory access control module connection；Wherein, described image receiver module connection institute
State memory access control module and for receiving input video frame, described image conversion and gray scale abstraction module are used for described
First image-driven module output driving is carried out with the first frame frequency to the input video frame before in the memory access control
Image procossing is carried out under the cooperation of molding block to the input video frame, the internal particular video frequency frame generation module is used for local
Generation particular video frequency frame is directly inputted into the second image-driven module, and the MUX is used for twice institute
The second frame frequency for stating the first frame frequency alternately exports the two-path video frame；Described image treatment includes gamma conversion, brightness or bright
Chromaticity correction and gray scale are extracted.
3. display control card as claimed in claim 1 or 2, it is characterised in that the internal particular video frequency frame generation module is used
Spy is locally generated in the content of the order sent according to front controller or the local register configuration definition of the display control card
Determine frame of video.
4. display control card as claimed in claim 3, it is characterised in that the particular video frequency frame is monochrome video frame.
5. display control card as claimed in claim 1, it is characterised in that also include：Memory access control module and described
The first image conversion of memory access control module connection and gray scale abstraction module and the conversion of the second image and gray scale extraction mould
Block；Wherein, described image receiver module connects the memory access control module and for receiving input video frame, and described the
One image is converted and gray scale abstraction module is used in described first image drive module to the input video frame with the first frame frequency
Image procossing is carried out to the input video frame under the cooperation of the memory access control module before carrying out output driving,
The internal particular video frequency frame generation module connects the memory access control module and for local generation particular video frequency frame,
Second image conversion and gray scale abstraction module are used in the second image-driven module to the particular video frequency frame with the
One frame frequency carries out figure under the cooperation of the memory access control module before carrying out output driving to the particular video frequency frame
As treatment, and the MUX are regarded for alternately exporting the two-way with the second frame frequency of twice first frame frequency
Frequency frame；Described image treatment is extracted comprising gamma conversion, brightness or bright chroma correction and gray scale.
6. the display control card as described in claim 1 or 5, it is characterised in that the internal particular video frequency frame generation module is used
Particular video frequency frame is locally generated in the pixel data of the specified location of the input video frame received according to described image receiver module.
7. display control card as claimed in claim 1, it is characterised in that also including parameter module, for providing parameter to institute
Frame display phase and duration adjustment module is stated to produce the frame selection signal；Display phase of the wherein described parameter comprising frame of video
Position side-play amount and display duration.
8. display control card as claimed in claim 1, it is characterised in that described image receiver module, the inside is specific regards
Frequency frame generation module, described first image drive module, the second image-driven module, the MUX and the frame
Display phase and duration adjustment module are incorporated into same PLD.
9. a kind of display control card, including PLD；Characterized in that, being configured with the PLD
Image receiver module and internal particular video frequency frame generation module, the input that described image receiver module is used to receive the first frame frequency are regarded
Frequency frame, the internal particular video frequency frame generation module locally generates specific under the field sync signal effect of the input video frame
Frame of video, and the input video frame and the particular video frequency frame with the second frame frequency of twice first frame frequency from described
Alternately exported to outside in PLD.
10. a kind of display control method, is applied to a kind of display control card；Characterized in that, the display control method includes
Step：
Receive outside input frame of video；
Local generation particular video frequency frame；
Output driving carried out with the first frame frequency to the outside input frame of video, and the outside input frame of video is carried out it is defeated
Going out before driving carries out image procossing；
Output driving is synchronized with the outside input frame of video with first frame frequency to the particular video frequency frame；
Frame selection signal is produced, wherein when the frame selection signal is used to determine display phase and the display of the particular video frequency frame
It is long；And
The outside input that output driving is synchronized with first frame frequency is regarded under the control of the frame selection signal
Frequency frame and the particular video frequency frame carry out selectivity output to complete the video frequency output of the second frame frequency.
11. display control methods as claimed in claim 10, it is characterised in that first frame frequency is 50HZ or 60HZ, institute
The second frame frequency is stated for twice first frame frequency.
12. display control methods as claimed in claim 10, it is characterised in that it is described it is local generation particular video frequency frame the step of
Including：The particular video frequency frame is locally generated according to the content that outside input order or local register configuration are defined.
13. display control methods as claimed in claim 10, it is characterised in that it is described it is local generation particular video frequency frame the step of
Including：The pixel data of the specified location according to the outside input frame of video locally generates the particular video frequency frame.
14. display control methods as claimed in claim 13, it is characterised in that also including step：To the particular video frequency
Frame is carried out at the image comprising gamma conversion, brightness or bright chroma correction and gray scale extraction before synchronizing output driving
Reason.
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| CN114783355A (en) * | 2022-03-31 | 2022-07-22 | 西安诺瓦星云科技股份有限公司 | LED display method and device, electronic equipment and readable storage medium |
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