CN102402414A - Image synchronization refreshing system and method for acquisition card buffer suitable for a big screen - Google Patents
Image synchronization refreshing system and method for acquisition card buffer suitable for a big screen Download PDFInfo
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Abstract
The invention discloses an image synchronization refreshing system for acquisition card buffer suitable for a big screen, comprising an acquisition card layer, a data processing layer, a write buffer layer, a read buffer layer, an application extended layer, an interface-processing layer and a refresh image layer. In addition, the inventions also provides an image synchronization refreshing method for acquisition card buffer suitable for the big screen, distributing two buffers for each channel of the acquisition card in the memory of the big screen controller for storing data, and then alternately displays the data of the buffer on the screen. The invention is characterized by realization of display of multi channels and multi windows, providing a flexible and extensible framework on the control of the original processing of the acquisition data and the display area; transmission of collected data; storage and distribution for data acquisition, realization of flexible and extensible way for historical data preservation and maintenance, so as to meet users scalability requirements on the big screen capture system.
Description
Technical field
The invention belongs to the large screen projection display system, be specifically related to a kind of capture card buffer zone synchronous images updating system and method that is applicable to giant-screen.Can obtain the video data of collection through the mode of programming when the capture card of the present invention on the giant-screen controller gathered video data, the present invention is applicable to the method for using buffer zone buffer memory video data and showing in turn at this kind environment.
Background technology
Present giant-screen acquisition system is used various types of capture card image data, realizes the function that picture shows through the software interface that capture card is intrinsic.Different for the definition of capture card functional interface because of manufacturer of each side, so large screen display system can only be realized the function that capture card is intrinsic, for the user, the function ratio of wanting to increase outside the capture card definition is difficult.
Along with giant-screen user's requirement is more and more abundanter, more and more stronger for the requirement of extendible data acquisition and display system.Based on the demand of user, need a kind of extendible giant-screen acquisition system of research and development badly to giant-screen acquisition system extendability.
Summary of the invention
The technical matters that the present invention will solve provides a kind of capture card buffer zone synchronous images updating system that is applicable to giant-screen; It is realizing showing hyperchannel multiwindow interface, and in the control of the original processing of image data and viewing area extension framework flexibly is provided; For the network delivery of image data, the file storage of image data and distribution, the preservation of historical data and safeguard that the realization of aspect all has extended mode flexibly, thus can satisfy the demand of user to giant-screen acquisition system extendability.For this reason, the present invention also provides a kind of capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen.
In order to solve the problems of the technologies described above, the present invention provides a kind of capture card buffer zone synchronous images updating system that is applicable to giant-screen, and this system comprises:
The capture card layer is used for image data, and this capture card layer obtains original video data through the software interface that calls the capture card function;
The data machined layer is used for the original video data that collects is carried out processed, comprises original video data is encoded and compressed, and the raw video image parameter is adjusted;
The compose buffer layer; Be used to judge the idle condition of each buffer zone, for each passage of capture card two buffer zones arranged all, each buffer zone is the dummy status or the full state of mark oneself all; Just be labeled as full state if data with existing exists not to be read, otherwise be labeled as dummy status; The compose buffer layer is used for writing data to the buffer zone of dummy status, is labeled as full state after accomplishing, and full state shows that buffer zone has had data readable and can not write; If two buffer zones all are full state then abandon current data, in order to avoid destroy the data that are not read;
Read the buffer zone layer; The state that is used for each buffer zone of circular test; Buffer zone for full state reads buffer contents, and the buffer contents that reads passed to the application extension layer or pass to the refreshed image layer directly on the interface, shows, the buffer empty status indication is set then; The buffer zone of empty status flags writes only and not can read;
The application extension layer provides the extra process of application extension;
The interface machined layer is used to select different display mediums, and display operation is unified encapsulation, replaces the graphic operation mode then as required;
Refreshed image layer: the module that is display image; Its relies on the processing of interface machined layer and reads the buffer zone layer or video data that the application extension layer transmits to its (refreshed image layer data from reading buffer zone layer or application extension layer); Its function is to create the instance of broadcasting pictures; The interface of creating out according to the interface machined layer will be received from the image of reading buffer zone layer or application extension layer and be presented on the interface, simultaneously the playing process (such as the control of frame per second) of managing video image and safeguard the relation of playing between instance and the interface.
Said data machined layer is adjusted the raw video image parameter and is comprised image size, position, pixel, image quality are adjusted; Said data machined layer can be expanded according to concrete applied environment, makes things convenient for the user to do more personalisation process according to the needs of oneself through the mode of adjusting back.
Said application extension layer is used to comprise the application extension of Network Transmission or file preservation, and the user can expand according to the needs of oneself.
Said interface machined layer; Show the mode of operation provide unified (such as still being that the intrinsic graphic operation interface of operating system provides unified access mode) for image for using video card; Make system architecture and peripheral applications framework isolate, make things convenient for the user to select different display modes like this according to the demand of oneself.
In addition, the present invention also provides a kind of capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen, comprises the steps:
(1) number according to the capture card passage is two buffer zones of each channel allocation, and the affiliated passage of each buffer zone of mark, and the original state of initialization buffer zone is a dummy status;
(2) being 4 threads of each channel start, is all channel start image data then;
(3) first thread: at first each passage is gathered video data, earlier the acquired original video data is carried out processed; Search the buffer zone of dummy status then, fill treated video data, and mark buffer is full state to the buffer zone of dummy status; If do not have the buffer zone of dummy status then return and continue image data;
(4) second threads: be used for reading buffer zone; Elder generation's fetch channel corresponding buffered zone state; All buffer zones that the cycle criterion passage is related are if having the buffer zone of full state just to read this buffer contents and make extension process or be directly passed to the 4th thread directly to be presented on the interface for the 3rd thread the delivery of content that reads; If it is readable to expire the buffer zone of state, then returns and continue to read buffer state;
(5) the 3rd threads are used for doing extension process, comprise the preservation of Network Transmission and file;
(6) the 4th thread main processing interface refresh activity show in real time the image that gets access to from second thread or carry out the network preview or historical video recording is checked from the 3rd image that thread gets access to.
In the step (3), saidly the acquired original video data is carried out processed comprise selection, the reduction of raw image data and skew, and the selection of the preservation form of view data compression of video data mode, coded system.
In the step (5), said Network Transmission makes the giant-screen controller that the video data of gathering is carried out network and throws screen or carry out long-range preview, and said file is preserved and made the giant-screen controller increase the function of historical video management and the distribution and the transmission of video content.
Compared with prior art, beneficial effect of the present invention is: the present invention is realizing showing hyperchannel multiwindow interface, and in the control of the original processing of image data and viewing area extension framework flexibly is provided; Network delivery for image data; The file storage of image data and distribution; The preservation of historical data and safeguard that the realization of aspect all has extended mode flexibly; Thereby can satisfy the demand of user, make the user can increase other functions outside the capture card definition easily giant-screen acquisition system extendability.The present invention is for need important meaning being arranged to the history reservation of image data and the large screen system of forwarded.
Description of drawings
Fig. 1 is the structural representation of system of the present invention;
Fig. 2 is the process flow diagram of the inventive method.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
The present invention is applicable to that giant-screen controller field capture card can obtain the image refreshing of acquired original data; Basic process of the present invention be in giant-screen controller internal memory for two buffer zones of each channel allocation of capture card are used to deposit image data, the data with buffer zone are presented on the interface in turn again.
As shown in Figure 1, the capture card buffer zone synchronous images updating system that is applicable to giant-screen of the present invention specifically comprises:
The capture card layer; Be the hardware foundation of system applies of the present invention, the data of collection all rely on capture card collection, and the capture card layer also comprises the software interface of control capture card function and the function of calling structure except hardware environment; Such as opening the capture card passage, start the capture card data acquisition.This capture card layer obtains original video data through the software interface that calls the capture card function.
The data machined layer; Be used for the raw data that collects is carried out processed; Comprise for the coded system and the compress mode of raw data and selecting, and the raw video image parameter is adjusted (comprise parameters such as image size, position, pixel, image quality are adjusted).The data machined layer can be expanded according to concrete applied environment, makes things convenient for the user to do more personalisation process according to the needs of oneself through the mode of adjusting back.The data machined layer realizes expanded function through calling third party's handling procedure, for except that more than the listed function, if the user needs extra Flame Image Process, then these functions can be placed in third party's program and handle.
Reading and writing buffer zone layer is two intrinsic modules of system, and requiring reading and writing buffer zone layer for the different expansion of user all is that the mode of fixing realizes.The compose buffer layer; Be used to judge the idle condition of each buffer zone, for each passage of capture card two buffer zones arranged all, each buffer zone is the dummy status or the full state of mark oneself all; Just be labeled as full state if data with existing exists not to be read, otherwise be labeled as dummy status; The compose buffer layer is used for writing data to the buffer zone of dummy status, is labeled as full state after accomplishing, and full state shows that buffer zone has had data readable and can not write; If two buffer zones all are full state then abandon current data, in order to avoid destroy the data that are not read; Read the buffer zone layer; The state that is used for each buffer zone of circular test; Buffer zone for full state reads buffer contents, and the buffer contents that reads passed to the application extension layer or pass to the refreshed image layer directly on the interface, shows, the buffer empty status indication is set then; The buffer zone of empty status flags writes only and not can read.
The application extension layer provides the extra process of application extension, and it is topmost two examples that Network Transmission of representing among Fig. 1 and file are preserved, and the user can expand according to the needs of oneself.
The interface machined layer is used to select different display mediums, and display operation is unified encapsulation; Replace the graphic operation mode then as required; Such as still being that the intrinsic graphic operation interface of operating system provides unified access mode for using video card, make system architecture and peripheral applications framework isolate, make things convenient for the user (for example like this according to the different display mode of the demand selection of oneself; Whether can select multipad still is that the web mode represents, cross operating system or the like).
The refreshed image layer; It is the module of display image; Its relies on the processing of interface machined layer and reads the buffer zone layer or video data that the application extension layer transmits to its (refreshed image layer data from reading buffer zone layer or application extension layer); Its function is to create the instance of broadcasting pictures; The interface of creating out according to the interface machined layer will be received from the image of reading buffer zone layer or application extension layer and be presented on the interface, simultaneously the playing process (such as the control of frame per second) of managing video image and safeguard the relation of playing between instance and the interface.
As shown in Figure 2, the capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen of the present invention mainly comprises the steps:
1. be two buffer zones of each channel allocation at first according to the number of capture card passage, and the affiliated passage of each buffer zone of mark, and the original state of initialization buffer zone is a dummy status.
2. being 4 threads of each channel start, is all channel start image data then.
3. first thread: at first each passage is gathered video data; Earlier the acquired original video data is carried out processed (compress mode of processed content such as data, the selection of coded system; The reduction of raw image data and skew, and the selection of the preservation form of view data or the like); Search the buffer zone (being buffer empty) of dummy status then, then fill treated video data (promptly carrying out write operation), and mark buffer is full state to buffer empty if any buffer empty; If do not have the buffer zone of dummy status then return and continue image data;
4. second thread: be used for reading buffer zone; Elder generation's fetch channel corresponding buffered zone state; All buffer zones that the cycle criterion passage is related directly are presented on the interface if having the buffer zone of full state just to read this buffer contents and the delivery of content that reads makes extension process for the 3rd thread (the 3rd thread function following 5 described) or be directly passed to the 4th thread (function of the 4th thread following 6 is described); If it is readable to expire the buffer zone of state, then returns and continue to read buffer state.
5. the 3rd thread is used for doing extension process (like Network Transmission; With file preservation etc.); The function of Network Transmission can make the giant-screen controller that the video data of gathering is carried out network and throw screen or carry out long-range preview, and file is preserved and can be made the giant-screen controller increase the function of historical video management and the distribution and the transmission of video content.
6. the 4th thread main processing interface refresh activity shows the image that gets access to from second thread in real time or carries out the network preview or historical video recording is checked from the 3rd image that thread gets access to.
Claims (7)
1. capture card buffer zone synchronous images updating system that is applicable to giant-screen is characterized in that this system comprises:
The capture card layer is used for image data, and this capture card layer obtains original video data through the software interface that calls the capture card function;
The data machined layer is used for the original video data that collects is carried out processed, comprises original video data is encoded and compressed, and the raw video image parameter is adjusted;
The compose buffer layer; Be used to judge the idle condition of each buffer zone, for each passage of capture card two buffer zones arranged all, each buffer zone is the dummy status or the full state of mark oneself all; Just be labeled as full state if data with existing exists not to be read, otherwise be labeled as dummy status; The compose buffer layer is used for writing data to the buffer zone of dummy status, is labeled as full state after accomplishing, and full state shows that buffer zone has had data readable and can not write;
Read the buffer zone layer; The state that is used for each buffer zone of circular test; Buffer zone for full state reads buffer contents, and the buffer contents that reads passed to the application extension layer or pass to the refreshed image layer directly on the interface, shows, the buffer empty status indication is set then; The buffer zone of empty status flags writes only and not can read;
The application extension layer provides the extra process of application extension;
The interface machined layer is used to select different display mediums, and display operation is unified encapsulation, replaces the graphic operation mode then as required;
The refreshed image layer; It is the module of display image; It is used to create the instance of broadcasting pictures; The interface of creating out according to the interface machined layer will be received from the image of reading buffer zone layer or application extension layer and be presented on the interface, simultaneously the playing process of managing video image and safeguard the relation of playing between instance and the interface.
2. the capture card buffer zone synchronous images updating system that is applicable to giant-screen as claimed in claim 1 is characterized in that, said data machined layer is adjusted the raw video image parameter and comprised image size, position, pixel, image quality are adjusted; Said data machined layer can be expanded according to concrete applied environment, makes things convenient for the user to do more personalisation process according to the needs of oneself through the mode of adjusting back.
3. the capture card buffer zone synchronous images updating system that is applicable to giant-screen as claimed in claim 1 is characterized in that, said application extension layer is used to comprise the application extension of Network Transmission or file preservation, and the user can expand according to the needs of oneself.
4. the capture card buffer zone synchronous images updating system that is applicable to giant-screen as claimed in claim 1; It is characterized in that; Said interface machined layer; Demonstration provides unified mode of operation for image, makes system architecture and peripheral applications framework isolate, and makes things convenient for the user to select different display modes according to the demand of oneself like this.
5. a capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen is characterized in that, comprises the steps:
(1) number according to the capture card passage is two buffer zones of each channel allocation, and the affiliated passage of each buffer zone of mark, and the original state of initialization buffer zone is a dummy status;
(2) being 4 threads of each channel start, is all channel start image data then;
(3) first thread: at first each passage is gathered video data, earlier the acquired original video data is carried out processed; Search the buffer zone of dummy status then, fill treated video data, and mark buffer is full state to the buffer zone of dummy status; If do not have the buffer zone of dummy status then return and continue image data;
(4) second threads: be used for reading buffer zone; Elder generation's fetch channel corresponding buffered zone state; All buffer zones that the cycle criterion passage is related are if having the buffer zone of full state just to read this buffer contents and make extension process or be directly passed to the 4th thread directly to be presented on the interface for the 3rd thread the delivery of content that reads; If it is readable to expire the buffer zone of state, then returns and continue to read buffer state;
(5) the 3rd threads are used for doing extension process, comprise the preservation of Network Transmission and file;
(6) the 4th thread main processing interface refresh activity show in real time the image that gets access to from second thread or carry out the network preview or historical video recording is checked from the 3rd image that thread gets access to.
6. the capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen as claimed in claim 5; It is characterized in that: in the step (3); Saidly the acquired original video data is carried out processed comprise selection compression of video data mode, coded system; The reduction of raw image data and skew, and the selection of the preservation form of view data.
7. the capture card buffer zone synchronous images method for refreshing that is applicable to giant-screen as claimed in claim 5; It is characterized in that: in the step (5); Said Network Transmission makes the giant-screen controller that the video data of gathering is carried out network and throws screen or carry out long-range preview, and said file is preserved and made the giant-screen controller increase the function of historical video management and the distribution and the transmission of video content.
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| CN111179862B (en) * | 2019-12-30 | 2021-05-28 | 掌阅科技股份有限公司 | Refreshing method of display page, reader and computer storage medium |
| CN114040136A (en) * | 2021-11-05 | 2022-02-11 | 北京京东乾石科技有限公司 | Track inspection device, image processing method, device, equipment and medium |
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Application publication date: 20120404 |