CN106559624A - Picture and text stacking apparatus and picture and text stacking method - Google Patents
Picture and text stacking apparatus and picture and text stacking method Download PDFInfo
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- CN106559624A CN106559624A CN201611013315.5A CN201611013315A CN106559624A CN 106559624 A CN106559624 A CN 106559624A CN 201611013315 A CN201611013315 A CN 201611013315A CN 106559624 A CN106559624 A CN 106559624A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2624—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects for obtaining an image which is composed of whole input images, e.g. splitscreen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
Abstract
The present invention proposes a kind of picture and text stacking apparatus and method, and described device includes：Microprocessor, exports figure/text data to be superimposed for responding the input operation that user is carried out to the input equipment for being connected to microprocessor；PLD, for receiving video interface input image data, receiving figure/text data to be superimposed, judge the data form of figure to be superimposed/text data and to put pixel-by-pixel be overlapped with multiple color components of video interface input image data respectively multiple color components of figure to be superimposed/text data when the data form of figure to be superimposed/text data is for text data to process after obtaining overlap-add procedure view data as output；And volatile memory, electrical connection PLD is used as data buffer storage.Therefore, the present invention is put to text data to be superimposed pixel-by-pixel and is overlapped in a minute Color Channel mode respectively, be increased the diversity of superposition, and then can be reached different display effects.
Description
Technical field
The present invention relates to display control technology field, more particularly to a kind of picture and text stacking apparatus and a kind of picture and text superposition side
Method.
Background technology
Display screen displayable image or text, it is sometimes desirable to show multiple image or multistage text on a display screen, very
Extremely multiple image or text can be carried out plane superposition according to priority, present hierarchical relationship；Such as PIP
(Picture-In-Picture, picture-in-picture), OSD (On Screen Display are shown on screen) menu etc. is all using figure
The level of picture or text is superimposed to realize.
Traditional high definition base map picture and text overlap-add procedure system is overlapped using pure software, or special image procossing core
Piece such as DSP is processed as primary processor.However, being overlapped using pure software, processing speed is slower, if adopted
High definition base map (such as FHD, 2K or 4K video image), processing speed can be slower；And DSP is adopted as image procossing main process task
Device, processing speed and external interface flexibility it is not good.
The content of the invention
Therefore, the present invention is directed to defect of the prior art and deficiency, there is provided a kind of picture and text stacking apparatus and a kind of figure
Literary stacking method.
Specifically, a kind of picture and text stacking apparatus that the embodiment of the present invention is proposed, including：Microprocessor, for responding user
The input operation carried out to the input equipment for being connected to the microprocessor exports figure/text data to be superimposed；Programmable logic device
Part, electrically connects the microprocessor, for receiving video interface input image data, receiving the figure to be superimposed/text data, sentence
Break the figure to be superimposed/text data data form and the figure to be superimposed/text data data form for text data when
Figure to be superimposed/text the data and the video interface input image data are overlapped into process and scheme after overlap-add procedure with being exported
As data, wherein the overlap-add procedure is：Point judges that multiple color components of the figure to be superimposed/text data are respectively pixel-by-pixel
It is no to meet corresponding multiple color component threshold conditions and view data after the overlap-add procedure is selected according to judged result
Each color channel data in multiple color channel datas be the figure to be superimposed/text data corresponding color component and
Which in the corresponding color component of the video interface input image data；And volatile memory, electrically connect institute
PLD is stated as data buffer storage.
In one embodiment of the invention, the plurality of color component be RGB component, the plurality of color channel data
For RGB channel data, the microprocessor is MCU, and the PLD is FPGA.
In one embodiment of the invention, the PLD is additionally operable in the figure to be superimposed/text data
Data form when being image data using the video interface input image data as base map by the figure to be superimposed/text data
It is superimposed to the video interface input image data.
In one embodiment of the invention, it is described that view data after the overlap-add procedure are selected according to judged result more
Each color channel data in individual color channel data is the corresponding color component of the figure to be superimposed/text data and institute
State in the corresponding color component of video interface input image data which include：When the figure to be superimposed/text data
First color component meets the first corresponding color component threshold condition, selects described the of the figure to be superimposed/text data
First color channel data of one color component as view data after the overlap-add procedure, otherwise selects the video interface defeated
Enter first color channel data of first color component as view data after the overlap-add procedure of view data.
In one embodiment of the invention, it is described that view data after the overlap-add procedure are selected according to judged result more
Each color channel data in individual color channel data is the corresponding color component of the figure to be superimposed/text data and institute
State in the corresponding color component of video interface input image data which include：When the figure to be superimposed/text data
The plurality of color component is satisfied by corresponding multiple color component threshold conditions, selects the figure to be superimposed/text number
According to the plurality of color component respectively as view data after the overlap-add procedure the plurality of color channel data, otherwise
Multiple color components of the video interface input image data are selected respectively as the institute of view data after the overlap-add procedure
State multiple color channel datas.
Additionally, a kind of picture and text stacking method that the embodiment of the present invention is proposed, including step：I () receives video interface input
View data；(ii) determine whether figure to be superimposed/text data input；(iii) after stacking chart/text data input is needed, sentence
The data form of the figure to be superimposed/text data of breaking；(iv) when the data form of the figure to be superimposed/text data is picture number
According to will be the figure to be superimposed/text data investigation defeated to the video interface by base map of the video interface input image data
Enter view data view data is obtained after overlap-add procedure as output；And (v) is when the data lattice of the stacking chart/text data
Formula is text data, and putting pixel-by-pixel will be multiple color components of the figure to be superimposed/text data defeated with the video interface respectively
The multiple color components for entering view data are overlapped process to obtain after overlap-add procedure view data as output.
In one embodiment of the invention, step (v) is specifically included：When the first face of the figure to be superimposed/text data
Colouring component meets the first corresponding color component threshold condition, selects first color of the figure to be superimposed/text data
First color channel data of the component as view data after the overlap-add procedure, otherwise selects the video interface input picture
First color channel data of first color component of data as view data after the overlap-add procedure.
In one embodiment of the invention, step (v) is specifically included：It is described many when the figure to be superimposed/text data
Individual color component is satisfied by corresponding multiple color component threshold conditions, selects the described many of the figure to be superimposed/text data
Multiple color channel datas of the individual color component respectively as view data after the overlap-add procedure, otherwise select the video to connect
The plurality of Color Channel of the multiple color components of mouth input image data respectively as view data after the overlap-add procedure
Data.
In one embodiment of the invention, the picture and text stacking method also includes step：Response user input operation is carried
For the figure to be superimposed/text data.
In one embodiment of the invention, the picture and text stacking method also includes step：By microprocessor responds user
Input operation generates osd data as the figure to be superimposed/text data.
From the foregoing, it will be observed that the embodiment of the present invention can reach following one or more beneficial effects：A) in figure to be superimposed/text number
According to for text data when the diversity of superposition increased using RGB component superposition, superposition can be gone with subchannel, be reached different aobvious
Show effect；B) multiple images or image and text can be shown on one display simultaneously so that user can be aobvious from one
More information are obtained in display screen；And c) when the expense that can save multiple display screens in picture-in-picture field completely is applied, it is real
Existing 1 video interface shows the function of multiple pictures simultaneously.
By the detailed description below with reference to accompanying drawing, the other side and feature of the present invention become obvious.But should know
Road, the purpose design that the accompanying drawing is only explained, not as the restriction of the scope of the present invention.It should also be noted that unless another
Point out outward, it is not necessary to scale accompanying drawing, they only try hard to conceptually illustrate structure described herein and flow process.
Description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Figure 1A is a kind of module diagram of picture and text stacking apparatus that the embodiment of the present invention is proposed.
Figure 1B is that text formatting osd data is superimposed to the Overlay schematic diagram after video interface input image data.
Fig. 1 C are that picture format osd data is superimposed to the Overlay schematic diagram after video interface input image data.
Picture and text additive process schematic diagrames of the Fig. 2 for picture and text stacking apparatus shown in Figure 1A.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Referring to Figure 1A, the picture and text stacking apparatus that the embodiment of the present invention is proposed adopt such as FPGA of PLD 11
(Field Programmable Gate Array, field programmable gate array), used as image primary processor, FPGA is internally integrated
Can the IP kernel of continuous upgrade function can realize the function of multiple external chips, reduce external chip and the space of circuit board accounted for
With and FPGA parallel processing multichannel datas, processing speed are fast, with roomy, while such as DDR3 of volatile memory 15 that arranges in pairs or groups
Or the DDR of higher frequency can realize bigger readwrite bandwidth as view data caching；And FPGA peripheries adopt microprocessor 13
Such as MCU is processing man-machine interaction task.
Specifically, the video interface (such as DVI, HDMI or SDI interface etc.) to electrically connect from PLD 11
The high-definition image data (such as FHD, 2K or 4K view data) of input are used as background (namely being applied object), if user needs
Text or picture are included then needing to operate input equipment 17, input equipment 17 to send user's operation information on high definition base map
To microprocessor 13, then will show that text or the RGB data of picture are sent to PLD 11 by microprocessor 13
It is overlapped process.Herein, input equipment 17 can be knob, mouse, touch-screen even computer system.
Hold above-mentioned, Figure 1B is to show the Overlay that text formatting osd data is superimposed to video interface input image data
It is intended to, and Fig. 1 C is the Overlay schematic diagram that OSD image datas are superimposed to video interface input image data.More specifically
Ground, referring to Figure 1A, PLD 11 receives video interface input figure by video interface such as DVI, HDMI or SDI etc.
As data, 13 receive user of microprocessor generates osd data (text formatting or picture lattice by the instruction that input equipment 17 is exported
Formula), video interface input image data and osd data are rgb format, and then PLD 11 pairs is connect from video
The video interface input image data of mouth and the osd data from microprocessor 13 are overlapped process, if osd data is text
Notebook data, then the Overlay schematic diagram after overlap-add procedure as shown in Figure 1B, and if osd data be image data, then fold
Plus the Overlay schematic diagram after processing is as shown in Figure 1 C.PLD 11 include data form register, " with/
Or " overlay model mask register, threshold register etc., these registers are configured by microprocessor 13.Certainly, may be used
To be understood by, the picture and text stacking apparatus shown in Figure 1A of the embodiment of the present invention are not limited in superposition osd data and connect to video
Mouthful input image data, or text data that other are directly inputted by user operation input equipment 17 or image data.
For ease of being more clearly understood that the embodiment of the present invention, below in conjunction with figures of the Figure 1A and Fig. 2 to the embodiment of the present invention
The picture and text additive process of literary stacking apparatus is described in detail.
Specifically, PLD 11 is input into it is first determined whether needing stacking chart/text data from microprocessor 13,
If without figure to be superimposed/text data input, exporting video interface input image data；As for determining whether figure/text to be superimposed
The method of data input can be realizing, such as in microprocessor 13 by figure to be superimposed/text data by signal waveform detection
Send to PLD 11 being triggered by microprocessor 13 during PLD 11 produce one with figure/text to be superimposed
The useful signal of data syn-chronization.
If figure to be superimposed/text data are input into PLD 11 from microprocessor 13, then input is judged
Figure to be superimposed/text data be whether image data (namely the data form of the figure to be superimposed/text data for judging to be input into for text also
It is picture), if image data, then image data is superimposed to as base map by video interface with video interface input image data
Input image data (such as with picture coverage mode) is to obtain after overlap-add procedure view data as output；, whereas if not
It is image data (that is to say text data), then is overlapped mode decision.Herein, the data form of figure to be superimposed/text data
Judging can be by detecting the content of the data form register configured by microprocessor 13 in PLD 11 come really
It is fixed.
As for overlay model judge can pass through detect PLD 11 in " and/or " overlay model select post
The content of storage realizing, and overlay model judge it is good after it is true further according to the threshold register in PLD 11
In four kinds of threshold value stacked systems such as fixed currently employed " being less than threshold value ", " being equal to threshold value ", " being more than threshold value " and " being not equal to threshold value "
Tri- components of any stacked system and RGB corresponding component threshold size is processed respectively.More specifically：
(1a) in the stacked system that current overlay model is "or" pattern and employing " being less than threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If some color component is less than corresponding color component threshold value (namely meeting color component threshold condition), select
Corresponding color channel data of the color component of text data to be superimposed as view data after overlap-add procedure；If otherwise should
Color component is more than or equal to corresponding color component threshold value, then select the color component of video interface input image data
As the corresponding color channel data of view data after overlap-add procedure.By taking R component as an example, if the R of text data to be superimposed point
Amount then selects the R component of text data to be superimposed as the R channel datas of view data after overlap-add procedure less than R component threshold value
(or claiming R component)；If otherwise the R component of text data to be superimposed is more than or equal to R component threshold value, selecting video interface input
R channel data of the R component of view data as view data after overlap-add procedure.
(1b) in the stacked system that current overlay model is "or" pattern and employing " being equal to threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If some color component is equal to corresponding color component threshold value (namely meeting color component threshold condition), select
Corresponding color channel data of the color component of text data to be superimposed as view data after overlap-add procedure；If otherwise should
Color component is not equal to corresponding color component threshold value, then select the color component conduct of video interface input image data
The corresponding color channel data of view data after overlap-add procedure.By taking R component as an example, if R component of text data to be superimposed etc.
In R component threshold value, then the R component of text data to be superimposed is selected as the R channel datas of view data after overlap-add procedure；Otherwise
If the R component of text data to be superimposed is not equal to R component threshold value, the R component conduct of video interface input image data is selected
The R channel datas of view data after overlap-add procedure.
(1c) in the stacked system that current overlay model is "or" pattern and employing " being more than threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If some color component is more than corresponding color component threshold value (namely meeting color component threshold condition), select
Corresponding color channel data of the color component of text data to be superimposed as view data after overlap-add procedure；If otherwise should
Color component is less than or equal to corresponding color component threshold value, then select the color component of video interface input image data
As the corresponding color channel data of view data after overlap-add procedure.By taking R component as an example, if the R of text data to be superimposed point
Amount then selects the R component of text data to be superimposed as the R channel datas of view data after overlap-add procedure more than R component threshold value；
If otherwise the R component of text data to be superimposed is less than or equal to R component threshold value, selecting the R of video interface input image data
R channel data of the component as view data after overlap-add procedure.
(1d) in the stacked system that current overlay model is "or" pattern and employing " being not equal to threshold value ", programmable logic device
Part 11 is put pixel-by-pixel to be carried out with RGB component threshold value respectively by the RGB component of the text data to be superimposed being input into from microprocessor 13
Relatively；If some color component is not equal to corresponding color component threshold value (namely meeting color component threshold condition),
The color component of text data to be superimposed is selected as the corresponding color channel data of view data after overlap-add procedure；Otherwise
If the color component is equal to corresponding color component threshold value, the color component of video interface input image data is selected to make
For the corresponding color channel data of view data after overlap-add procedure.By taking R component as an example, if the R component of text data to be superimposed
Be not equal to R component threshold value, then the R component of text data to be superimposed is selected as the R channel datas of view data after overlap-add procedure；
If otherwise the R component of text data to be superimposed is equal to R component threshold value, selecting the R component of video interface input image data to make
For the R channel datas of view data after overlap-add procedure.
(2a) in the stacked system that current overlay model is "AND" pattern and employing " being less than threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If RGB component is respectively less than each self-corresponding RGB component threshold value (namely being satisfied by color component threshold condition), selection is treated
RGB channel data of the RGB component of superposition text data respectively as view data after overlap-add procedure；If otherwise in RGB component
At least one color component is more than or equal to corresponding color component threshold value, then select video interface input image data
RGB channel data of the RGB component respectively as view data after overlap-add procedure.
(2b) in the stacked system that current overlay model is "AND" pattern and employing " being equal to threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If RGB component is equal to each self-corresponding RGB component threshold value (namely being satisfied by color component threshold condition), selection is treated
RGB channel data of the RGB component of superposition text data respectively as view data after overlap-add procedure；If otherwise in RGB component
At least one color component is not equal to corresponding color component threshold value, then select the RGB of video interface input image data
RGB channel data of the component respectively as view data after overlap-add procedure.
(2c) in the stacked system that current overlay model is "AND" pattern and employing " being more than threshold value ", PLD
11 are put pixel-by-pixel and are compared the RGB component of the text data to be superimposed being input into from microprocessor 13 respectively with RGB component threshold value
Compared with；If RGB component is all higher than each self-corresponding RGB component threshold value (namely being satisfied by color component threshold condition), selection is treated
RGB channel data of the RGB component of superposition text data respectively as view data after overlap-add procedure；If otherwise in RGB component
At least one color component is less than or equal to corresponding color component threshold value, then select video interface input image data
RGB channel data of the RGB component respectively as view data after overlap-add procedure.
(2d) in the stacked system that current overlay model is "AND" pattern and employing " being not equal to threshold value ", programmable logic device
Part 11 is put pixel-by-pixel to be carried out with RGB component threshold value respectively by the RGB component of the text data to be superimposed being input into from microprocessor 13
Relatively；If RGB component is not equal to each self-corresponding RGB component threshold value (namely being satisfied by color component threshold condition), select
Select the RGB channel data of the RGB component respectively as view data after overlap-add procedure of text data to be superimposed；If otherwise RGB point
In amount, at least one color component is equal to corresponding color component threshold value, then select video interface input image data
RGB channel data of the RGB component respectively as view data after overlap-add procedure.
Finally, after the overlap-add procedure that PLD 11 is obtained, view data can be sent to display screen and be shown
Show, if figure to be superimposed/text data are osd data, user just can observe operating result by display screen.
In sum, the embodiment of the present invention can reach following one or more beneficial effects：A) in figure to be superimposed/text number
According to for text data when using RGB component be superimposed, increased the diversity of superposition, can with subchannel go superposition, reach different
Display effect (such as the different display effects shown in Figure 1B and Fig. 1 C)；B) multiple figures can be shown simultaneously on one display
Picture or image and text so that user can obtain more information from a display screen；And c) when applying in picture-in-picture
Field can save the expense of multiple display screens completely, realize 1 video interface while showing the function of multiple pictures.In addition,
It is noted that the microprocessor 13 in previous embodiment be not limited to MCU, or other microprocessors as ARM at
Reason device, dsp processor etc.；PLD 11 is also not limited to FPGA, or other PLDs；Before
State subchannel stacked system and be not limited to tri- Color Channels of point RGB and be overlapped, or logical using multiple other colors
Road is overlapped.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when making a little change or modification using the technology contents of the disclosure above
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, still fall within the range of technical solution of the present invention.
Claims (10)
1. a kind of picture and text stacking apparatus, it is characterised in that include：
Microprocessor (13), for responding the input that user is carried out to the input equipment (17) for being connected to the microprocessor (13)
Operation output figure/text data to be superimposed；
PLD (11), electrically connects the microprocessor (13), for receiving video interface input image data, connecing
Receive the figure to be superimposed/text data, judge the data form of the figure to be superimposed/text data and in the figure to be superimposed/text number
According to data form be text data when the figure to be superimposed/text data and the video interface input image data are folded
Plus process to export view data after overlap-add procedure, wherein the overlap-add procedure is：Point judges the figure/text to be superimposed pixel-by-pixel
Whether multiple color components of data meet corresponding multiple color component threshold conditions respectively and are selected according to judged result
Each color channel data after the overlap-add procedure in multiple color channel datas of view data be the figure to be superimposed/
Which in the corresponding color component of the corresponding color component of literary data and the video interface input image data；With
And
Volatile memory (15), electrically connects the PLD (11) as data buffer storage.
2. picture and text stacking apparatus as claimed in claim 1, it is characterised in that the plurality of color component is RGB component, described
Multiple color channel datas be RGB channel data, the microprocessor be MCU, and the PLD be FPGA.
3. picture and text stacking apparatus as claimed in claim 1, it is characterised in that the PLD is additionally operable to described
The data form of figure to be superimposed/text data will be described as base map using the video interface input image data when being image data
Figure to be superimposed/text data investigation is to the video interface input image data.
4. picture and text stacking apparatus as claimed in claim 1, it is characterised in that described to be selected at the superposition according to judged result
Each color channel data after reason in multiple color channel datas of view data is the phase of the figure to be superimposed/text data
Which in the corresponding color component of corresponding color component and the video interface input image data includes：
When the first color component of the figure to be superimposed/text data meets the first corresponding color component threshold condition, select
First Color Channel of first color component of the figure to be superimposed/text data as view data after the overlap-add procedure
Data, otherwise select the first color component of the video interface input image data as view data after the overlap-add procedure
The first color channel data.
5. picture and text stacking apparatus as claimed in claim 1, it is characterised in that described to be selected at the superposition according to judged result
Each color channel data after reason in multiple color channel datas of view data is the phase of the figure to be superimposed/text data
Which in the corresponding color component of corresponding color component and the video interface input image data includes：
When the plurality of color component of the figure to be superimposed/text data is satisfied by corresponding multiple color component threshold values
Condition, selects the plurality of color component of the figure to be superimposed/text data respectively as view data after the overlap-add procedure
The plurality of color channel data, otherwise select multiple color components of the video interface input image data respectively as
The plurality of color channel data of view data after the overlap-add procedure.
6. a kind of picture and text stacking method, it is characterised in that including step：
I () receives video interface input image data；
(ii) determine whether figure to be superimposed/text data input；
(iii) after stacking chart/text data input is needed, judge the data form of the figure to be superimposed/text data；
(iv) when the data form of the figure to be superimposed/text data is image data, with the video interface input image data
For base map by the figure to be superimposed/text data investigation to the video interface input image data obtaining image after overlap-add procedure
Data are used as output；
V () is text data when the data form of the stacking chart/text data, put the figure to be superimposed/text data pixel-by-pixel
Multiple color components be overlapped with multiple color components of the video interface input image data respectively process to obtain
After overlap-add procedure, view data is used as output.
7. picture and text stacking method as claimed in claim 6, it is characterised in that step (v) is specifically included：When described to be superimposed
First color component of figure/literary data meets the first corresponding color component threshold condition, selects the figure to be superimposed/text number
According to first color component as the first color channel data of view data after the overlap-add procedure, otherwise select described
First Color Channel number of first color component of video interface input image data as view data after the overlap-add procedure
According to.
8. picture and text stacking method as claimed in claim 6, it is characterised in that step (v) is specifically included：When described to be superimposed
The plurality of color component of figure/literary data is satisfied by corresponding multiple color component threshold conditions, selects described to be superimposed
Multiple color channel datas of the plurality of color component of figure/literary data respectively as view data after the overlap-add procedure,
Multiple color components of the video interface input image data are selected otherwise respectively as view data after the overlap-add procedure
The plurality of color channel data.
9. picture and text stacking method as claimed in claim 6, it is characterised in that also including step：Response user input operation is carried
For the figure to be superimposed/text data.
10. picture and text stacking method as claimed in claim 6, it is characterised in that also including step：By microprocessor responds user
Input operation generates osd data as the figure to be superimposed/text data.
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| CN107016976A (en) * | 2017-05-31 | 2017-08-04 | 西安诺瓦电子科技有限公司 | Display control method and device and display screen system |
| CN107205165A (en) * | 2017-07-11 | 2017-09-26 | 成都德芯数字科技股份有限公司 | Picture and text stacking method and device |
| CN107483846A (en) * | 2017-08-29 | 2017-12-15 | 西安全志科技有限公司 | Video and graph compound method, stacking apparatus, code device and storage medium |
| CN107563956A (en) * | 2017-09-05 | 2018-01-09 | 成都德芯数字科技股份有限公司 | Picture and text stacking method and device |
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