CN102497526A - Method and system for displaying multiple channels of video by same link - Google Patents
Method and system for displaying multiple channels of video by same link Download PDFInfo
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- CN102497526A CN102497526A CN2011103736174A CN201110373617A CN102497526A CN 102497526 A CN102497526 A CN 102497526A CN 2011103736174 A CN2011103736174 A CN 2011103736174A CN 201110373617 A CN201110373617 A CN 201110373617A CN 102497526 A CN102497526 A CN 102497526A
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Abstract
The invention discloses a method and a system for displaying multiple channels of video by the same link. The system comprises a matrix, a control device, a display screen and a plurality of cameras, decoding cards are arranged on the control device, the cameras are connected with input ends of the matrix, output ends of the matrix are connected with the decoding cards of the control device, the control device is connected with the display screen, a control end port of the control device is connected with a control end port of the matrix, each output end of the matrix outputs a plurality of camera signal sources in a time sharing manner, one decoding card corresponds to a plurality of displaying areas on the display screen, one display area corresponds to one camera signal source of one output end of the matrix, the control device is provided with a circuit multiplex management module connected with the decoding cards, the matrix is provided with a signal source switching module which switches the camera signal sources of each output end of the matrix by receiving signal source switching commands by the control end port of the matrix. Accordingly, multiple channels of video can be displayed on the same link.
Description
Technical field
The invention belongs to vision signal and show the field, be specifically related to the method and system that a kind of same link shows multi-channel video.
Background technology
Current video signal shows that normally a link shows one road video signal source.As shown in Figure 1, in traditional video display system, the signal source of camera is input in the matrix through the input port of matrix, and control device switches in the output of a certain road through the unlike signal source of port with access matrix.The image that in this road output, can only show one tunnel signal source.Therefore the computer of embedded control device or with combination that control device is connected on, the signal source number that can show simultaneously is subject to the quantity of decoding card on the control device fully, so there is following defective in traditional video display system:
(1) quantity of displayable video signal source simultaneously to be enlarged, the quantity of decoding card need be rolled up;
(2) decoding card slot limited amount on the control device between 4 ~ 16, therefore, has greatly limited the quantity of display source signal simultaneously often;
(3) increase the quantity in display video signal source simultaneously through hardware expanding, cost an arm and a leg, increased the cost of system greatly.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of method that on same link, shows the same link demonstration multi-channel video of multiplex video signal source simultaneously is provided.
The present invention also provides a kind of system that on same link, shows the same link demonstration multi-channel video of multiplex video signal source simultaneously.
For realizing above-mentioned purpose, first technical scheme of the present invention is:
A kind of same link shows the method for multi-channel video; The signal source of some cameras is through the input input matrix of matrix; The different camera signals source that control device will receive through the control port gating matrix outputs on the decoding card of control device through the output of matrix; The control device picture that card decodes the camera signals source data of will decoding is shown on the display screen, and said method comprises the steps:
Each output timesharing output several camera signals source of matrix is set;
Several viewing areas on the corresponding display screen of decoding card are set, a camera signals source of a corresponding matrix output in viewing area;
Control device sends the signal source switching command through control port to matrix immediately after a full picture frame is received in each decoding clamping;
Matrix is according to the camera signals source of the pairing matrix output output of signal source switching command switching encoding/decoding card, and wherein the switching in the several camera signals source of each output of matrix output circulates successively according to the signal source switching command and switches output;
The decoding card decodes picture with the camera signals source data that receives, and control device outputs to the picture that decodes on the corresponding display of camera signals source.
In the present technique scheme, control device switches the camera signals source through each output of the accurate gating matrix of signal source switching command in correct time, and the picture that the card of will decoding decodes correctly outputs on the corresponding display.All there is output order separately in camera signals source on each output of matrix; Each output of matrix circulates successively according to the signal source switching command its camera signals source is switched, and makes the output that can both circulate in order of the camera signals source of each output.
In the such scheme, said method also comprises the steps:
It sends the state of signal source switching command the control device inspection, obtains the pairing camera signals of the picture source that the decoding card decodes, and the picture that decodes is outputed on the corresponding display of camera signals source again.
In the such scheme, the camera signals source quantity of each output output of said matrix is provided with by the user.
In the such scheme, the maximum of the camera signals source quantity of each output of said matrix output is: 1000/ (control device sends signal source switching command time+matrix signal source switching time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond.
Second technical scheme of the present invention is:
A kind of same link shows the system of multi-channel video; Comprise matrix, control device, display screen and several cameras, control device is provided with the decoding card that the camera signals source data is decoded picture, and said camera is connected with the matrix input; The matrix output links to each other with the decoding card of control device; Control device links to each other with display screen, and the control port of control device is connected with the control port of matrix, corresponding several cameras of each output of matrix; A decoding blocks several viewing areas on the corresponding display screen, a camera signals source of a corresponding matrix output in viewing area;
Said control device is provided with the line sharing administration module that is used for after a full picture frame is received in each decoding clamping, sending to matrix through control port immediately the signal source switching command; Itself and decoding card connection, and the control port through control device is connected with the control port of matrix;
Said matrix is provided with the signal source handover module according to the camera signals source of the pairing matrix output output of signal source switching command switching encoding/decoding card; Its control port through matrix receives the signal source switching command, and wherein the signal source handover module is to circulate successively to switch to the switching in the several camera signals source of each output of matrix.
In the such scheme; Also be provided with state detection module on the said control device; The state that is used for detection line reuse management module signal source output switching command obtains the pairing camera signals of the picture that decodes source, and control device outputs to picture on the corresponding display of camera signals source according to the pairing camera signals of the picture source that obtains.
In the such scheme, said control device is the mosaic screen processor, and said display screen is a tiled display, and several viewing areas are set on the mosaic display screen.
In the such scheme, said control device is a computer, and the display screen that computer carries is by virtual several viewing areas that is divided into.
In the such scheme, it is characterized in that the camera signals source quantity of each output output of said matrix is provided with by the user.
In the such scheme, the maximum of the camera signals source quantity of each output of said matrix output is: 1000/ (the line sharing administration module sends signal source switching command time+signal source handover module switching signal source time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond.
Compared with prior art, the present invention has following beneficial effect:
The present invention comes each output of gating matrix to switch the camera signals source in correct time through on control device, increasing a line sharing administration module, and the control device picture that card decodes of will decoding correctly outputs on the corresponding display.All there is output order separately in camera signals source on each output of matrix; Each output of matrix circulates to independently switching in its camera signals source according to the signal source switching command of line sharing administration module successively; Make can both circulate in order output and the mapping correctly of the camera signals source of each output output on each viewing area of screen; In a short period of time; The pairing picture in camera signals source of output successively is shown on the corresponding display, and what utilization time-delay user saw will be a plurality of pictures that show simultaneously.The present invention has broken through the conventional video demonstration and must rely on hardware expanding such as increasing decoding card, decoding card slot to increase the method for while display source signal number on the same link; Thereby through carrying out a plurality of camera signals source timesharing and use same hardware link a line sharing administration module being set on the control device and a signal source handover module is set on matrix; This method is carried out reuse management in time; Thereby reach the quantity that does not change the original hardware configuration of user and improve while displayable video signal source greatly, greatly provide cost savings.
Description of drawings
Fig. 1 is a classical signals source display system schematics;
Fig. 2 is the structural representation that the same link of the present invention shows the system of multi-channel video;
Fig. 3 shows the method flow diagram of multi-channel video for a kind of same link among the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is carried out detailed description.
As shown in Figure 2; First purpose of the present invention is to realize that a kind of same link shows the system of multi-channel video; It comprises several cameras 1, matrix 2, control device 3, display screen 4, and control device 3 is provided with the decoding card 31 that the camera signals source data is decoded picture, and camera 1 is connected with matrix 2 inputs; Matrix 2 outputs link to each other with the decoding card 31 of control device 3; Control device 3 links to each other with display screen 4, and the control port of control device 3 is connected with the control port of matrix 2, corresponding several cameras of matrix 2 each output; Several viewing areas of decoding card 31 corresponding display screens, a camera signals source of corresponding matrix 2 outputs in viewing area; The camera signals source quantity of each outputs output of matrix 2 is provided with by the user, and the maximum of the camera signals source quantity of matrix 2 each outputs output is: 1000/ (the line sharing administration module sends signal source switching command time+signal source handover module switching signal source time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond.
Control device 3 is the mosaic screen processor or is computer that when being the mosaic screen processor as if control device 3, display screen is a tiled display, and several viewing areas are set on the mosaic display screen; If control device 3 is a computer, the display screen that computer carries is by virtual several viewing areas that is divided into.
Control device 3 is provided with line sharing administration module 32; Be used for after each decoding card 31 receives a full picture frame, sending the signal source switching command through control port to matrix 2 immediately; Line sharing administration module 32 is connected with decoding card 31, and is connected with the control port of matrix 2 through the control port of control device 3;
Matrix 2 is provided with signal source handover module 21, and it is according to the camera signals source of signal source switching command switching encoding/decoding card 31 pairing matrix 2 outputs outputs; Signal source handover module 21 receives the signal source switching command through the control port of matrix 2, and wherein the switching in the several camera signals source of 21 pairs of matrix 2 each outputs of signal source handover module is to circulate successively to switch.
Also be provided with state detection module 33 on the control device 3; The state that is used for detection line reuse management module 32 signal source output switching commands obtains the pairing camera signals of the picture that decodes source, and control device 3 outputs to picture on the corresponding display of camera signals source according to the pairing camera signals of the picture source that obtains.
Shown in Fig. 3 institute; Second purpose of the present invention is to realize that a kind of same link shows the method for multi-channel video; The signal source of some cameras 1 is through the input input matrix 2 of matrix 2; The different camera signals source that control device 3 will receive through control port gating matrix 2 outputs on the decoding card 31 of control device 3 through the output of matrix 2, and control device 3 picture that card 31 decodes the camera signals source data of will decoding is shown on the display screen 4, and said method comprises the steps:
(S1) matrix 2 each output timesharing output several camera signals source are set; The camera signals source quantity of each outputs output of matrix 2 is provided with by the user, and the maximum of the camera signals source quantity of matrix 2 each outputs output is: 1000/ (control device sends signal source switching command time+matrix signal source switching time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond;
(S2) several viewing areas on the decoding card 31 corresponding display screens 4, a camera signals source of corresponding matrix 2 outputs in viewing area are set;
(S3) control device 3 sends the signal source switching command through control port to matrix 2 immediately after each decoding card 31 receives a full picture frame;
(S4) matrix 2 is according to the camera signals source of signal source switching command switching encoding/decoding card 31 pairing matrix 2 outputs outputs, and wherein the switching in the several camera signals source of matrix 2 each output output circulates successively according to the signal source switching command and switches output;
(S5) decoding card 31 decodes picture with the camera signals source data that receives;
(S6) control device 3 checks that it sends the state of signal source switching command, obtaining the pairing camera signals of the picture source that decoding card 31 decodes, and the picture that decodes is outputed on the corresponding display of camera signals source again.
Below in conjunction with specific embodiment technical scheme of the present invention is further explained.
As shown in Figure 2, be provided with 1,2,3 ~ N camera 1.1,1.2,1.3 ~ 1.N, the input with matrix 2 is connected respectively; 4 inputs of matrix 2 are connected respectively on 4 decoding card 31.1 ~ 31.4 inputs of control device 3; Control device 3 is connected with display screen 4; 16 viewing areas 4.1 ~ 4.16 are set on the display screen 4; 16 road cameras 1.1 ~ 1.16 are corresponding one by one with 16 viewing areas 4.1 ~ 4.16; Wherein 1.1,1.2,1.5,1.6 road camera signals sources transfer on second decoding card 31.2 through second output of matrix 2; Second decoding card 31.2 correspondence is presented on 4.1,4.2,4.5 and 4.6 viewing areas on the display screen 4; 1.3,1.4,1.7,1.8 road camera signals sources first output through matrix 2 transfers on first decoding card 31.1; First decoding card 31.1 correspondences are presented on 4.3,4.4,4.7,4.8 viewing areas on the display screen 4, and 1.9,1.10,1.13,1.14 road camera signals sources transfer on the 3rd the decoding card 31.3 through the 3rd output of matrix 2, and the 3rd decoding card 31.3 correspondences are presented on 4.9,4.10,4.13,4.14 viewing areas on the display screen 4; 1.11, four output of 1.12,1.15,1.16 road camera signals sources through matrix 2 transfer on the 4th the decoding card 31.4, the 4th decoding card 31.4 correspondences are presented on 4.11,4.12,4.15,4.16 viewing areas on the display screen 4.
During work; Line sharing administration module 32 sends signal source switching command notification signal source handover module 33 first output switching output the 3 road camera signals source 1.3 with matrix 2 through control port; After first decoding card 31.1 receives a full picture frame in camera signals source; Line sharing administration module 32 sends signal source switching command notification signal source handover module 21 first output switching output the 4 road camera signals source 1.4 with matrix immediately; After first decoding card 31.1 received a full picture frame once more, according to above-mentioned steps, first output of matrix 2 switched output the 7th, 8 road camera signals sources successively; Make first output of matrix output the 3rd, 4,7,8 camera signals sources of circulating successively, till stopping to Show Picture;
First decoding card 31.1 is after receiving the camera signals source data; Be decoded into picture; Control device 3 is through the state of state detection module 33 inspection line sharing administration modules 32 signal source output switching commands; Obtain the pairing camera signals of the current picture that decodes source, thereby the picture that decodes is shown on display screen 4 corresponding display.Other matrix outputs also independently carry out the switching of camera signals source according to above-mentioned steps with the decoding card and the picture frame that receives are decoded, and realize the demonstration of picture.The output of matrix independently carries out the switching in camera signals source parallel, and each does not influence.
Claims (10)
1. a same link shows the method for multi-channel video; The signal source of some cameras is through the input input matrix of matrix; The different camera signals source that control device will receive through the control port gating matrix outputs on the decoding card of control device through the output of matrix, the picture that the decoding card decodes the camera signals source data, and control device is shown to the picture that decodes on the display screen; It is characterized in that said method comprises the steps:
Each output timesharing output several camera signals source of matrix is set;
Several viewing areas on the corresponding display screen of decoding card are set, a camera signals source of a corresponding matrix output in viewing area;
Control device sends the signal source switching command through control port to matrix immediately after a full picture frame is received in each decoding clamping;
Matrix is according to the camera signals source of the pairing matrix output output of signal source switching command switching encoding/decoding card, and wherein the switching in the several camera signals source of each output of matrix output circulates successively according to the signal source switching command and switches output;
The decoding card decodes picture with the camera signals source data that receives, and control device outputs to the picture that decodes on the corresponding display of camera signals source.
2. same link according to claim 1 shows the method for multi-channel video, it is characterized in that said method also comprises the steps:
It sends the state of signal source switching command the control device inspection, obtains the pairing camera signals of the picture source that the decoding card decodes, and the picture that decodes is outputed on the corresponding display of camera signals source again.
3. same link according to claim 1 and 2 shows the method for multi-channel video, it is characterized in that, the camera signals source quantity of each output output of said matrix is provided with by the user.
4. same link according to claim 3 shows the method for multi-channel video, it is characterized in that,
The maximum of the camera signals source quantity of each output of said matrix output is: 1000/ (control device sends signal source switching command time+matrix signal source switching time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond.
5. the system of a same link demonstration multi-channel video comprises matrix, control device, display screen and several cameras, and control device is provided with the decoding card that the camera signals source data is decoded picture; Said camera is connected with the matrix input; The matrix output links to each other with the decoding card of control device, and control device links to each other with display screen, and the control port of control device is connected with the control port of matrix; It is characterized in that; Corresponding several cameras of each output of matrix, a decoding blocks several viewing areas on the corresponding display screen, a camera signals source of a corresponding matrix output in viewing area;
Said control device is provided with the line sharing administration module that is used for after a full picture frame is received in each decoding clamping, sending to matrix through control port immediately the signal source switching command; Itself and decoding card connection, and the control port through control device is connected with the control port of matrix;
Said matrix is provided with the signal source handover module according to the camera signals source of the pairing matrix output output of signal source switching command switching encoding/decoding card; Its control port through matrix receives the signal source switching command, and wherein the signal source handover module is to circulate successively to switch to the switching in the several camera signals source of each output of matrix.
6. same link according to claim 5 shows the system of multi-channel video; It is characterized in that; Also be provided with state detection module on the said control device; The state that is used for detection line reuse management module signal source output switching command obtains the pairing camera signals of the picture that decodes source, and control device outputs to picture on the corresponding display of camera signals source according to the pairing camera signals of the picture source that obtains.
7. same link according to claim 5 shows the system of multi-channel video, it is characterized in that said control device is the mosaic screen processor, and said display screen is a tiled display, and several viewing areas are set on the mosaic display screen.
8. same link according to claim 5 shows the system of multi-channel video, it is characterized in that said control device is a computer, and the display screen that computer carries is by virtual several viewing areas that is divided into.
9. show the system of multi-channel video according to each described same link of claim 5 to 8, it is characterized in that the camera signals source quantity of each output output of said matrix is provided with by the user.
10. same link according to claim 9 shows the system of multi-channel video; It is characterized in that; The maximum of the camera signals source quantity of each output of said matrix output is: 1000/ (the line sharing administration module sends signal source switching command time+signal source handover module switching signal source time+decoding card receiver and 1 frame picture time of decompress(ion)); Wherein, The maximum time that each output of 1000 representing matrixs switches the camera signals source is spaced apart 1000 milliseconds, and control device sends signal source switching command time, matrix signal source switching time, decoding card receiver and the unit of 1 frame picture time of decompress(ion) and is millisecond.
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