CN102902504B - Connection system and connection method for computer base map signal of embedded image control platform - Google Patents
Connection system and connection method for computer base map signal of embedded image control platform Download PDFInfo
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Abstract
The invention discloses a connection system and a connection method for a computer base map signal of an embedded image control platform. The connection system comprises the embedded image control platform, a network access server, a command bus and a data bus, wherein the embedded image control platform is in charge of accessing a signal source and providing multiple output signals, and the network access server adopts an industrial personal computer platform of a PC (personal computer) framework, is in charge of loading and running rich user applications and comprises all network-related interactive services, wherein two channels are erected between the embedded image control platform and the network access server; the command bus is in charge of sending a control command to the embedded image control platform through the network access server and receiving a feedback from the embedded image control platform; and the data bus is a high-speed image output channel for outputting image signals generated in the network access server to the embedded image control platform in a user-defined format in real time. According to the connection system and the connection method, the PC framework is combined with an embedded framework, and integrating the advantages of two control platforms.
Description
Technical field
The present invention relates to a kind of giant-screen control system, particularly relate to a kind of connected system of embedded image parametric controller computing machine base map signal.In addition, the invention still further relates to a kind of method of attachment of embedded image parametric controller computing machine base map signal.
Background technology
In large-screen display control system field, the function of control end is more and more enriched powerful, and develops towards the angle of industry segmentation, field segmentation, application segmentation.How making full use of the functional performance of control system, efficiently improve the utilization rate of large screen display system, provide better Consumer's Experience and the lower equipment of energy consumption, is the target generally pursued of industry and direction.
In giant-screen control system, the parametric controller that long-term existence two class is different:
1. based on the parametric controller of embedded system
The feature of this mode is, design is with integrated circuit (IC) chip and FPGA(Field-Programmable Gate Array, i.e. field programmable gate array, it is the product further developed on the basis of the programming devices such as PAL, GAL, CPLD) based on hardware structure, multi-disc image pick-up card and output card are accessed in backplane bus side by side.Under the driving of embedded system or Single Chip Microcomputer (SCM) system, realize the picture signal collected to output in corresponding output channel by assigned address.
The advantage of this mode, be to have employed succinct hardware structure, cost is lower, makes the main application of large screen system---and the reading of signal source and display, under the process chip that performance is powerful drives, can efficiently complete fast.
The drawback of this mode, is this based on system architecture that is embedded or single-chip microcomputer, cannot meets other interaction demands of user in higher level.Such as, this parametric controller cannot run the software of framework complexity, and then cannot carry out network access and control operation.And the environment that giant-screen uses exactly mostly is the workbench of multiple person cooperational formula, this drawback just weakens the availability of large screen system widely.
2. based on the parametric controller of conventional P C framework
The feature of this mode is, have employed conventional P C framework, with arithmetical unit, processor for core, the collection of image and output is used as a relatively independent functional module of complete industrial computer system.The board of image acquisition, multi-screen output can be completed by special configuration, make parametric controller possess the function same with embedded system parametric controller.
The advantage of this mode, is that the parametric controller of PC framework has powerful software service access capability.Based on this platform, the demand of multiplicity of subscriber can greatly be met by disposing related function module.
The drawback of this mode, is compared to embedded system, and PC framework is more complicated, more to the restriction of input-output device, and then there is certain gap with embedded platform in collection signal quantity, harmless display stream medium frame per second etc.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of connected system of embedded image parametric controller computing machine base map signal, is combined by PC framework with embedded architecture, has concentrated two kinds of parametric controller advantage separately.For this reason, the present invention also provides a kind of method of attachment of embedded image parametric controller computing machine base map signal.
In order to solve the problems of the technologies described above, the invention provides a kind of connected system of embedded image parametric controller computing machine base map signal, this system comprises:
Embedded image parametric controller, is responsible for access signal source and provides multipath output signals;
Network access server, adopts the industrial computer platform of PC framework, is responsible for loading and runs abundant user's application, comprise the interactive service that all are relevant to network;
Two passes is set up: command line and data bus between described embedded image parametric controller and described network access server; Described command line is responsible for sending control command to embedded image parametric controller by network access server, and receives the feedback of this embedded image parametric controller; Described data bus is high speed image output channel, and it is served for network access server provides high speed image to transmit, and the picture signal all generated in network access server outputs on embedded image parametric controller in real time with self-defining form.
Described command line is responsible for network access server and is sent control command to embedded image parametric controller, and this control command comprises opens input channel instruction, the instruction of adjustment video parameter, image display request.
Described network access server is responsible for loading and is run abundant user's application, and this user application is divided into local application and network application from deployed environment; Local application is the application be directly deployed in network access module; Network application is deployed in other computer systems beyond network access server, with the form of network packet, is sent in network access module by image and data, is presented at the application of large screen system.
Described embedded image parametric controller comprises acquisition module, output module, image processing module; Described acquisition module, for identifying the view data in input channel, sends it in image processing module, products for further process; Described output module is used for the data in output channel to output to display device by data cable; Described image processing module is for the treatment of the data from acquisition module and the data of being come in by the transmission of high speed image output channel, and treatment types comprises location, seizure, adjustment signal quality.
Described network access server comprises image processing module, network access module; Described network access module is responsible for dispatching extraneous input, analyzes input content, is distributed to by input content in described image processing module; Described image processing module is for receiving the extraneous input content from network access module, display request is judged, legal display request is carried out to calculating and the splicing of target location, transmission display command and data are in embedded image parametric controller, the state of Real-time Obtaining embedded image parametric controller, and self-adaptation output resolution ratio is provided.
In addition, the present invention also provides a kind of method of attachment of embedded image parametric controller computing machine base map signal, comprises the steps:
(1) system initialization: first embedded image parametric controller carries out initialization; Then embedded image parametric controller reads output pixel value from output module, passed to network access server, network access server, according to the output resolution ratio of the pixel value adjustment display chip received, makes the output pixel of itself and embedded image parametric controller match; Then the output of display chip is passed to embedded image parametric controller by high speed image output channel by network access server, after embedded image parametric controller receives data, this view data is sent in output channel, replaces original acquiescence base map and export picture;
(2) capture when an extraneous input signal is embedded into formula image control platform, first carry out the judgement of asking legitimacy; When outer input signal is not by the judgement of legitimacy, then abandon; When input signal have passed the judgement of legitimacy, then be converted into a legal display request, this display request receive by network access server image processing module, this module calls the corresponding interface in display chip, at target location synthetic image by the content of request;
(3) image of generation is transferred to embedded image parametric controller by high speed image output channel by network access server subsequently, by embedded image parametric controller, the picture material received is sent in output channel, completes the procedure for displaying of input signal to external world.
In step (1), described embedded image parametric controller carries out initialization, this initialization procedure comprises platform self-inspection acquisition module, whether output module starts normally, output module starts the acquiescence base map of embedded image parametric controller to be sent in output channel, acquisition module starts the signal source detecting whether existence activity in input channel, if existed, then detect the attribute (comprising signal resolution, signal frequency, signal area etc.) of this signal source, carry out the preparation of collection.
In step (1), described display chip belongs to display driver chip, itself there is the ability generating high resolution output picture, after this chip carries out data communication between embedded image parametric controller, obtain the output pixel of embedded image parametric controller, next according to this output pixel value, adjust self display resolution, the output of itself and embedded image parametric controller is matched, thus accomplishes resolution self-adaptation.
In step (2), the judgement of described request legitimacy, is mainly divided into logic legitimacy and pixel legitimacy by the foundation judged; This logic validity judgement comprises and judges whether the content that this input signal is asked is thought meaningful by system; After this pixel validity judgement occurs in logic validity judgement, refer to, for a significant request, whether system can display it.Described logic validity judgement comprises: judge whether input channel exists, and whether user's application of display is correctly installed and had permission and call; Described pixel validity judgement comprises: whether the target area judging to ask display can by the detection of ColorKey, within the scope whether contained at system output resolution ratio.The detection of described ColorKey specifically comprises the steps:
First, embedded image parametric controller detects the target location of input signal, namely in the input signal, extracts Image display position information;
Then, after obtaining positional information, first embedded image parametric controller detects the current display state in this position, and namely judge whether that there is ColorKey covers, the result of detection divides following three kinds of situations:
One, at present this band of position not cover by ColorKey;
Two, at present this band of position completely cover by ColorKey;
Three, at present this band of position some cover by ColorKey;
In a first scenario, owing to ColorKey not detected on target area, then can judge that target area is illegal, give up this display request; In the latter case, because target area is covered by ColorKey gamut, then can judge that target area gamut can show, continue the operation performing display image; In a third case, need, according to the result detected, to calculate by the position that ColorKey covers in target area, and be updated to new target area, continue the operation performing display image.
Beneficial effect of the present invention is:
1. PC framework is combined with embedded architecture by the present invention, has concentrated two kinds of parametric controller advantage separately.The input and output of image all complete at embedded image parametric controller, relatively with adopting the network access server of PC framework isolate, thus ensure that high efficiency and the security of a large amount of signal source window being carried out to Control and Schedule.Network access server module provides the PC framework hardware and software platform of standard, makes the sector application of mass customization and the access of software service in giant-screen control system become possibility.
2. adopt the platform data switching technology of user-defined format, the PC platform making embedded image parametric controller can obtain equal resolution exports picture.The data transmitted in high speed image output channel come from the customization display chip in network access server.Its bus in embedded image parametric controller can accurately be docked, and has the adaptive ability of output resolution ratio.This chip belongs to display driver chip, itself has the ability generating high resolution output picture.After this chip carries out data communication between " embedded image parametric controller ", obtain the output pixel of " embedded image parametric controller ", next according to this output pixel value, adjust self display resolution, make it match with the output of " embedded image parametric controller ", thus accomplish resolution self-adaptation.Once the output resolution ratio change of embedded image parametric controller be detected, high speed image output channel possesses the ability improving self transmission display resolution at any time.
Adopt in the industry the case of embedded image parametric controller at present, the high-resolution video card of many use third parties directly accesses in embedded image parametric controller, cannot ensure that the output resolution ratio of embedded image parametric controller is identical with the transmission resolution of high score video card like this, namely there will be the situation of image stretch or compression, have lost the display capabilities that large screen display system itself is powerful widely.
3. utilize ColorKey technology, make the signal source window of the application window on PC framework and embedded platform can in vertical dimension mutual additive fusion.ColorKey technology is the technology be widely used in computer video process and image display.In embedded image parametric controller module of the present invention, in order to the graphic picture seamless matching generated with network access server further, in image procossing, employ ColorKey technology.(processing procedure is shown in that process flow diagram describes) in this way, makes the image content in network access server can superpose mutually with the output content of embedded platform, arranges flexibly, for user provides the identical Consumer's Experience with all-in-one.
4. can the embedded image parametric controller of independent operating, for whole control system provides high security.From entirety, being loaded with a large amount of third-party application and the network access module of network service, in most cases, is the source causing system problem.And adopt this framework, parametric controller can be made when network access module temporarily loses response, still the input and output of image are kept normal and run.In the industry field of video monitoring (as the energy, electric power) that some are higher to security requirement, or the long-range display field (as finance, traffic) higher to requirement of real-time, this framework can ensure system availability in abnormal cases to the full extent.
5. system architecture described in the invention, makes two of control system parts all can upgrade easily and safeguard.In the magnitude of image acquisition and output, undertaken by standalone upgrade, the spare and accessory parts of changing embedded image parametric controller; On network access server host performance and network service access capability, configure by each parts changing network access server.
Accompanying drawing explanation
Fig. 1 is the structural representation of present system;
Fig. 2 is the process flow diagram that in the inventive method, ColorKey detects;
Fig. 3 is the overall flow figure of the inventive method.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the connected system of a kind of embedded image parametric controller of the present invention computing machine base map signal is mainly divided into two modules:
1. embedded image parametric controller, is responsible for access signal source, and provides multipath output signals.Described embedded image parametric controller comprises acquisition module, output module, image processing module; Described acquisition module, for identifying the view data in input channel, sends it in image processing module, products for further process; Described output module is used for the data in output channel to output to display device by data cable; Described image processing module is for the treatment of the data from acquisition module and the data of being come in by the transmission of high speed image output channel, and treatment types comprises location, seizure, adjustment signal quality.
2. network access server, for adopting the industrial computer platform of PC framework, being responsible for loading and running abundant user's application, comprising the interactive service that all are relevant to network.These users apply, and divide from deployed environment, can be divided into local application and network application.Local application is the application be directly deployed in network access module.Such as, in the industry such as traffic, water treatment, large screen system usually needs to show some high-resolution Business flows and process monitoring picture.Network application is deployed in other computer systems beyond network access server, with the form of network packet, is sent in network access module by image and data, is presented at the application of large screen system.The industries such as such as finance, electric power, generally adopt the mode of long-range display to show the contents such as all kinds of Real-time Data Models in real time on large screen system.Described network access server comprises image processing module, network access module; Described network access module is responsible for dispatching extraneous input, analyzes input content, is distributed to by input content in described image processing module; Described image processing module is for receiving the extraneous input content from network access module, display request is judged, legal display request is carried out to calculating and the splicing of target location, transmission display command and data are in embedded image parametric controller, the state of Real-time Obtaining embedded image parametric controller, and self-adaptation output resolution ratio is provided.
Two passes is set up between above-mentioned two modules (embedded image parametric controller and network access server), the command line on the left side is responsible for sending control command (or being called steering order) to embedded image parametric controller by network access server, and receives the feedback of this embedded image parametric controller.Control command comprises opens input channel instruction, the instruction of adjustment video parameter, image display request etc.; The high speed image output channel on the right is data bus, and it is served for network access server provides high speed image to transmit, and the picture signal all generated in network access server outputs on embedded image parametric controller in real time with self-defining form.
Fig. 2 is the process flow diagram that in the inventive method, ColorKey detects, and Fig. 2 describes the process of image call and display.As shown in Figure 2, ColorKey detects and comprises the steps:
First, by network access server sending controling instruction to embedded image parametric controller; Embedded image parametric controller have received the steering order that comprises image display operations, has namely initiated the request of an image display.
Then, embedded image parametric controller detects target location, namely in this steering order, extracts Image display position information.
Then, after obtaining positional information, first embedded image parametric controller detects the current display state in this position, namely judges whether that there is ColorKey covers.The result detected divides three kinds of situations:
One, at present this band of position not cover by ColorKey;
Two, at present this band of position completely cover by ColorKey;
Three, at present this band of position some cover by ColorKey.
In a first scenario, owing to ColorKey not detected on target area, then can judge that target area is illegal, give up this display request (" rejecting request " namely in Fig. 2); In the latter case, because target area is covered by ColorKey gamut, then can judge that target area gamut can show, continue the operation performing display image; In a third case, need, according to the result detected, to calculate by the position (" calculating output area " namely in Fig. 2) that ColorKey covers in target area, and be updated to new target area, continue the operation performing display image.
Fig. 3 is the overall flow figure of the method for attachment of a kind of embedded image parametric controller of the present invention computing machine base map signal.Two are divided into start source: " system startup " and " extraneous input signal ".Introduce respectively below:
1. with " system startup " for starting point, descriptive system initialization procedure.
1) first embedded image parametric controller carries out initialization.Initialization procedure comprises platform self-inspection acquisition module, whether output module starts normally, output module starts the acquiescence base map of embedded image parametric controller to be sent in output channel, acquisition module starts the signal source detecting whether existence activity in input channel, if existed, then detect its attribute (comprising signal resolution, signal frequency, signal area etc.), carry out the preparation of collection.
2) embedded image parametric controller reads output pixel value from output module, is passed to network access server.Network access server receives this notice, determines that embedded image parametric controller normally starts.And according to the output resolution ratio of the pixel value adjustment display chip received, the output pixel of itself and embedded image parametric controller is matched.This display chip belongs to display driver chip, itself has the ability generating high resolution output picture.After this chip carries out data communication between embedded image parametric controller, obtain the output pixel of embedded image parametric controller, next according to this output pixel value, adjust self display resolution, the output of itself and embedded image parametric controller is matched, thus accomplishes resolution self-adaptation.
3) output of display chip is passed to embedded image parametric controller by high speed image output channel by network access server.After the latter receives data, this view data is sent in output channel, replaces original acquiescence base map and export picture.So far, initialization procedure terminates.
2. with " extraneous input signal " for starting point, descriptive system receives the processing procedure of extraneous input.
1) capture when an extraneous input signal is embedded into formula image control platform, first carry out the judgement of asking legitimacy.This deterministic process more complicated, mainly can be divided into logic legitimacy and pixel legitimacy by the foundation judged.Logic validity judgement comprises and judges whether the content that this input signal is asked is thought meaningful by system.Such as, whether input channel exists, and whether user's application of display is correctly installed and had permission and call etc.After pixel validity judgement occurs in logic validity judgement, refer to, for a significant request, whether system can display it.Such as, whether the target area of request display can by the detection of ColorKey, within the scope whether contained at system output resolution ratio etc.
2) when input signal is not by the judgement of legitimacy, then abandon; When input signal have passed the judgement of legitimacy, be then converted into a legal display request.This display request receive by network access server image processing module.This module calls the corresponding interface in display chip by the content of request, at target location synthetic image.
3) image of generation is transferred to embedded image parametric controller by high speed image output channel by network access server subsequently.By embedded image parametric controller, the picture material received is sent in output channel, completes the procedure for displaying of input signal to external world.
Claims (11)
1. a connected system for embedded image parametric controller computing machine base map signal, is characterized in that, this system comprises:
Embedded image parametric controller, is responsible for access signal source and provides multipath output signals;
Network access server, adopts the industrial computer platform of PC framework, is responsible for loading run user application, and this user application is divided into local application and network application from deployed environment; Local application is the application be directly deployed in network access module; Network application is deployed in other computer systems beyond network access server, with the form of network packet, is sent in network access module by image and data, is presented at the application of large screen system;
Two passes is set up: command line and data bus between described embedded image parametric controller and described network access server; Described command line is responsible for sending control command to embedded image parametric controller by network access server, and receives the feedback of this embedded image parametric controller; Described data bus is high speed image output channel, and it is served for network access server provides high speed image to transmit, and the picture signal all generated in network access server outputs on embedded image parametric controller in real time with self-defining form.
2. the system as claimed in claim 1, it is characterized in that, described command line is responsible for network access server and is sent control command to embedded image parametric controller, and this control command comprises opens input channel instruction, the instruction of adjustment video parameter, image display request.
3. the system as claimed in claim 1, is characterized in that, described embedded image parametric controller comprises acquisition module, output module, image processing module; Described acquisition module, for identifying the view data in input channel, sends it in image processing module, products for further process; Described output module is used for the data in output channel to output to display device by data cable; Described image processing module is for the treatment of the data from acquisition module and the data of being come in by the transmission of high speed image output channel, and treatment types comprises location, seizure, adjustment signal quality.
4. the system as claimed in claim 1, is characterized in that, described network access server comprises image processing module, network access module; Described network access module is responsible for dispatching extraneous input, analyzes input content, is distributed to by input content in described image processing module; Described image processing module is for receiving the extraneous input content from network access module, display request is judged, legal display request is carried out to calculating and the splicing of target location, transmission display command and data are in embedded image parametric controller, the state of Real-time Obtaining embedded image parametric controller, and self-adaptation output resolution ratio is provided.
5. a method of attachment for embedded image parametric controller computing machine base map signal, is characterized in that, comprise the steps:
(1) system initialization: first embedded image parametric controller carries out initialization; Then embedded image parametric controller reads output pixel value from output module, passed to network access server, network access server, according to the output resolution ratio of the pixel value adjustment display chip received, makes the output pixel of itself and embedded image parametric controller match; Then the output of display chip is passed to embedded image parametric controller by high speed image output channel by network access server, after embedded image parametric controller receives data, this view data is sent in output channel, replaces original acquiescence base map and export picture;
(2) capture when an extraneous input signal is embedded into formula image control platform, first carry out the judgement of asking legitimacy; When outer input signal is not by the judgement of legitimacy, then abandon; When input signal have passed the judgement of legitimacy, then be converted into a legal display request, this display request receive by network access server image processing module, this module calls the corresponding interface in display chip, at target location synthetic image by the content of request;
(3) image of generation is transferred to embedded image parametric controller by high speed image output channel by network access server subsequently, by embedded image parametric controller, the picture material received is sent in output channel, completes the procedure for displaying of input signal to external world.
6. method as claimed in claim 5, it is characterized in that, in step (1), described embedded image parametric controller carries out initialization, and this initialization procedure comprises platform self-inspection acquisition module, whether output module starts normally, and output module starts the acquiescence base map of embedded image parametric controller to be sent in output channel, acquisition module starts the signal source detecting whether existence activity in input channel, if existed, then detect the attribute of this signal source, carry out the preparation of collection.
7. method as claimed in claim 6, it is characterized in that, the attribute of described signal source comprises signal resolution, signal frequency, signal area.
8. method as claimed in claim 5, it is characterized in that, in step (1), described display chip belongs to display driver chip, itself there is the ability generating high resolution output picture, after this chip carries out data communication between embedded image parametric controller, obtain the output pixel of embedded image parametric controller, next according to this output pixel value, adjust self display resolution, the output of itself and embedded image parametric controller is matched, thus accomplishes resolution self-adaptation.
9. method as claimed in claim 5, is characterized in that, in step (2), the judgement of described request legitimacy, is mainly divided into logic legitimacy and pixel legitimacy by the foundation judged; This logic validity judgement comprises and judges whether the content that this input signal is asked is thought meaningful by system; After this pixel validity judgement occurs in logic validity judgement, refer to, for a significant request, whether system can display it.
10. method as claimed in claim 9, it is characterized in that, described logic validity judgement comprises: judge whether input channel exists, and whether user's application of display is correctly installed and had permission and call; Described pixel validity judgement comprises: whether the target area judging to ask display can by the detection of ColorKey, within the scope whether contained at system output resolution ratio.
11. methods as claimed in claim 10, it is characterized in that, the detection of described ColorKey specifically comprises the steps:
First, embedded image parametric controller detects the target location of input signal, namely in the input signal, extracts Image display position information;
Then, after obtaining positional information, first embedded image parametric controller detects the current display state in this position, and namely judge whether that there is ColorKey covers, the result of detection divides following three kinds of situations:
One, at present this band of position not cover by ColorKey;
Two, at present this band of position completely cover by ColorKey;
Three, at present this band of position some cover by ColorKey;
In a first scenario, owing to ColorKey not detected on target area, then can judge that target area is illegal, give up this display request; In the latter case, because target area is covered by ColorKey gamut, then can judge that target area gamut can show, continue the operation performing display image; In a third case, need, according to the result detected, to calculate by the position that ColorKey covers in target area, and be updated to new target area, continue the operation performing display image.
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