Method and system shared by video equipmentTechnical field
The present invention relates to radio and television broadcast system technical field, specifically, relate to a kind of video equipment and share method and system.
Background technology
The broadcast system equipment of tv stations currently broadcast comprises can export the background signal equipment broadcasted separately and the key signals equipment that can not broadcast separately.Described background signal equipment comprises video server, video tape recorder for emergent broadcast, also comprise various signal access device, as satellite-signal access device, studio signal access device, live signal access device, multiple channel signals line access equipment etc.
TV station, when being broadcasted by video/audio signal, needs the program by video tape recorder, various signal access device provide to upload in video server usually, then controls video server and broadcast.
For video tape recorder, a coding pass of a video tape recorder and video server forms one and uploads passage.As shown in Figure 1, be the structural representation of existing single channel program upload system.Upload controller 1 connects video tape recorder 11 and video server 12 coding pass respectively by serial ports 422.The output of video tape recorder 11 is connected with the input of video server 12.When video tape recorder 11 uploads program to video server 12, upload controller 1 and control video tape recorder 11 and broadcast program fragment to be uploaded, send instructions to video server 12 simultaneously.Video server 12 receives the analog signal that video tape recorder 11 exports, and is encoded by coding pass, is stored in for broadcasting in video server 12, thus completes uploading of program after digitlization.After having uploaded, upload controller 1 and send out to the coding pass of video tape recorder 11 and video server 12 respectively and cease and desist order, what complete whole program has uploaded work.
And in real work, upload controller to make full use of, upload controller there is multiple passage of uploading, as shown in Figure 2, be the structural representation of existing multichannel program upload system for usual one.Upload controller for one there are two to upload passage.All upload controller by correspondence due to video tape recorder and video server coding pass to exclusively enjoy.In this case, in real work, have following problem:
1. eachly upload the actual corresponding station of controller.In TV station, be clearly defining responsibilities, each station, at one time, can only operating personnel log in, the work of uploading of different operating personnel can not exchange.Like this, uploading controller for one has multiple task of uploading to need to perform, and another is uploaded controller and now only has a tasks carrying, so upload controller and can perform at most a task for first, and although second is uploaded controller and only performs a task, but owing to being taken by operating personnel, can only leave unused one and upload passage, cause the waste of resource.
2. an other video tape recorder model is different from other, and belt model is also different, can not use with.Suppose there is the upload system shown in two cover Fig. 2, the video tape recorder 21 of first set and the second video tape recorder 21 ' overlapped are same model, and the video tape recorder 22 of first set, video tape recorder 22 ' are same model.When first set upload system has two video tapes identical with video tape recorder 21 model to upload task, and now the video tape recorder 21 ' of the second cover upload system is in work, and video tape recorder 22 ' leaves unused.So now, two tasks of first set upload system also can only sequentially perform, although there is the video tape recorder 22 ' meeting model requirement to leave unused in the second cover upload system.
3. with 2 in like manner, when the video server that coding pass is corresponding different, when can not use with, certain position equipment can be caused too to leave unused, the phenomenon that the task of certain station is but being queued up.
Above three situations just upload the citing of station for two, when multiple station, certain station resource is nervous, task queue, and has the idle situation of some position equipments often to occur simultaneously, cause the very large wasting of resources, also bring a lot of inconvenience to work.
In broadcast link, for aforementioned various signal access device, not only a channel will use sometimes, sometimes has several channel will use the demand of the signal of this access device, and namely these signal access devices exist the user demand shared.
For video tape recorder, consider broadcast security needs, prevent video server fault, or material such as can not to be in time at the situation causing video server to broadcast, general employing video tape recorder is as auxiliary playing device, go wrong at video server, or time material has little time to be transferred to video server, adopt video tape recorder to broadcast.A general channel assignment two video tape recorders, under video server failure condition, alternately broadcasting of multiple program.If video server fault can not use, so complete the broadcast of broadcasting job order program map with video tape recorder, owing to requiring time program alternately broadcasts that 0 frame accurately (seamless), so at least need plural video tape recorder to complete.As shown in Figure 3, be broadcast system structural representation sketch.Such as, broadcast controller 3 and sequentially will broadcast a, b, c tri-programs, use two video tape recorders n, m, use video tape recorder n to broadcast a program, b program is ready at video tape recorder m, simultaneously after a program close of transmission, b program starts to broadcast, in the broadcast process of program b, c program is ready at video tape recorder n, the like.Visible, a channel at least needs two video tape recorders, the safe broadcast of guarantee program.So in general TV station, while adopting video server to broadcast, each channel needs outfit two video tape recorders to use as emergent broadcast.
Calculate by each channel assignment two video tape recorders, one provincial, general 8 to 15 channels, need 16 to 30 to record a video as emergency set.And the frequency that the actual video tape recorder of video tape recorder uses is not high, except above-described video server fault (minimum probability appearance), indivedual exactly news program adopts video tape recorder promptly to broadcast when having little time to be transferred to video server, this phenomenon also can not exceed once for one day, so video tape recorder is in whole day in 24 hours, most time is idle.Like this, the idle phenomenon of video tape recorder is very serious, and the cost of video tape recorder is very expensive, so just causes TV station to invest very large waste.
For key signals equipment, the such as packaging facilities etc. of film titler, station caption machine or each TV station, its essence is Signal averaging equipment, namely in original background signal, is superimposed with some information.These equipment are also not always in running order, also have shared user demand.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of video equipment to share method and system, is dispatched by the matrix of proxy server and video/audio signal, realizes the shared use of video equipment.
For solving the problems of the technologies described above, according to an aspect of the present invention, scheme one provides a kind of video equipment to share method, wherein, comprises the steps:
Inquire about the current state of described video equipment;
Select the video equipment being in upstate;
By controlling the video/audio matrix between described video equipment and target device, connect the route of described video equipment and target device;
Revise the current state of described video equipment.
Preferably, scheme two provided by the invention is share method based on the video equipment described in aforementioned schemes one, further comprising the steps of:
The operating state of described video equipment and the target device worked is shown with word, form or diagramatic way.
Preferably, scheme three provided by the invention is share method based on the video equipment described in scheme one or two, after selection is in the video equipment step of upstate, also comprises:
The identity identification information of selected video equipment and target device is sent to equipment Control Server;
Corresponding relation between described equipment Control Server determination work station and described video equipment.
Preferably, scheme four provided by the invention is, method is shared based on the video equipment described in scheme three, after the identity identification information of selected video equipment and target device is sent to equipment Control Server step, described work station or equipment Control Server send control information to matrix majorization server, and described control information comprises selected video equipment and the identity identification information of target device;
By controlling the video/audio matrix between described video equipment and target device, the step connecting the signal route of described video equipment and target device is specially: by video/audio matrix described in described matrix majorization server controls, connects the signal route that described vision signal provides equipment and target device.
Preferably, scheme five provided by the invention is, share method based on the video equipment described in scheme four, after connecting the signal route of described video equipment and target device, also comprise: described matrix majorization server sends the notice of signal route connection to described work station;
After described work station receives the notice of described signal route connection, send status modifier notice to described equipment Control Server;
The step revising the current state of described video equipment is specially: after described equipment Control Server receives described status modifier notice, by the state of the state of described video equipment or described video equipment and target device by useful modifications for taking.
Preferably, scheme six provided by the invention is, share method based on the video equipment described in scheme four, after connecting the signal route of described video equipment and target device, also comprise: described matrix majorization server sends the notice of signal route connection to described equipment Control Server;
The step revising the current state of described video equipment is specially: after described equipment Control Server receives the notice that described signal route connects, by the state of the state of described video equipment or described video equipment and target device by useful modifications for taking.
Preferably, scheme seven provided by the invention is, share method based on the video equipment described in scheme four, five or six, the step of the current state of the described video equipment of described inquiry is specially:
Work station sends inquiry request to described equipment Control Server;
Described equipment Control Server is inquired about the state information of connected multiple video equipment, and described state information is returned to described work station after receiving the inquiry request that work station sends;
The step that described selection is in the video equipment of upstate is specially:
Described work station is according to the state information returned, and selection mode is the video equipment of upstate.
Preferably, scheme eight provided by the invention is, shares method based on the video equipment described in scheme four, five or six, and work station inquires about the state information of the video equipment of record on it, and selects the video equipment being in upstate;
The state of amended video equipment and target device is sent to described work station by described equipment Control Server.
Preferably, scheme nine provided by the invention is share method based on the video equipment described in scheme five or six, when described video equipment be video tape recorder, target device be channel switch platform time, the upstate of described video tape recorder is idle condition;
Send to equipment Control Server also to send the job order of video tape recorder the identity identification information of selected video equipment and target device simultaneously;
Described work station also sends work initiate notification while sending status modifier notice to described equipment Control Server;
After described equipment Control Server receives described initiate notification, control video tape recorder work according to job order.
Preferably, scheme ten provided by the invention is, method is shared based on the video equipment described in scheme five or six, when described video equipment be video tape recorder, target device be the coding pass of video server time, while the current state of the described video equipment of inquiry, inquire about the state of the coding pass of described video server, wherein, the upstate of the coding pass of described video tape recorder and video server is idle condition;
While selecting to be in the video equipment of upstate, select the coding pass being in the video server of upstate;
Described work station also sends work initiate notification while sending status modifier notice to described equipment Control Server;
After described equipment Control Server receives described initiate notification, the coding pass controlling video tape recorder and described video server carries out program and uploads work.
Preferably, scheme 11 provided by the invention is share method based on the video equipment described in scheme five or six, and described video equipment is multiple signal access devices, and the upstate of described signal access device is for there being signal condition.
Preferably, scheme 12 provided by the invention is, method is shared based on the video equipment described in scheme 11, when described target device is the coding pass of described video server, while the current state of the described video equipment of inquiry, inquire about the state of the coding pass of described video server, wherein, the upstate of the coding pass of described video server is idle condition;
While selecting to be in the video equipment of upstate, select the coding pass being in the video server of upstate;
Described work station also sends work initiate notification while sending status modifier notice to described equipment Control Server;
After described equipment Control Server receives described initiate notification, the coding pass controlling described video server carries out program and uploads work.
Preferably, scheme 13 provided by the invention is, share method based on the video equipment described in scheme 11, described signal access device is satellite-signal access device, studio signal access device, live signal access device or channel line signal access device.
Preferably, scheme 14 provided by the invention is share method based on the video equipment described in scheme five or six, when described video equipment be key signals equipment, target device be channel switch platform time, the upstate of described key signals equipment is idle condition;
According to a second aspect of the invention, scheme 15 provides a kind of video equipment shared system, wherein, comprises
Multiple video equipment, for providing video background signal or key signals;
Video/audio matrix, it has multiple input, output, and its input is corresponding with described multiple video equipment respectively to be connected, and described output connects more than one target device;
Matrix majorization server, controls the signal route that described video/audio matrix connects corresponding video equipment and respective objects equipment.
Preferably, scheme 16 provided by the invention is, based on the video equipment shared system described in scheme 15, also comprise:
Multiple work station, is connected with described matrix majorization server, for selecting described video equipment, and sends the work order to described video equipment;
Equipment Control Server, is connected with described multiple video equipment and described multiple work station respectively, controls corresponding video equipment work or the instruction of work station is transmitted to corresponding video equipment according to the instruction of work station.
Preferably, scheme 17 provided by the invention is, based on the video equipment shared system described in scheme 16, described matrix majorization server is connected, for information exchange with described equipment Control Server.
Preferably, scheme 18 provided by the invention is, based on video equipment shared system described in scheme 15 or 16, when described video equipment be video tape recorder or signal access device time, described target device is that channel switch platform is or/and multiple coding passes of video server.
Preferably, scheme 19 provided by the invention is, based on the video equipment shared system described in scheme 18, described signal access device is satellite-signal access device, studio signal access device, live signal access device or channel signals line access equipment.
Preferably, scheme 20 provided by the invention is, based on the video equipment shared system described in scheme 15 or 16 or 17, when described video equipment is key signals equipment, described target device is channel switch platform.
Preferably, scheme 21 provided by the invention is, based on the video equipment shared system described in scheme 20, wherein, described key signals equipment is station caption machine, film titler or channel package equipment.
The present invention, according to said method and system, by the utilization to matrix, can realize sharing of video equipment, thus reach the object of maximum using current device.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects of the present invention, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the structural representation of existing single channel program upload system;
Fig. 2 is the structural representation of existing multichannel program upload system;
Fig. 3 is existing broadcast system structural representation sketch;
Fig. 4 is the collaborative share system configuration schematic diagram of the embodiment of the present invention one;
Fig. 5 is for the present invention is based on the collaborative share method flow diagram of structure shown in Fig. 4;
Fig. 6 is the collaborative share system configuration schematic diagram of the embodiment of the present invention two;
Fig. 7 is for the present invention is based on the collaborative share method flow diagram of structure shown in Fig. 6;
Fig. 8 is the collaborative share system configuration schematic diagram of the embodiment of the present invention three;
Fig. 9 is for the present invention is based on the collaborative share method flow diagram of structure shown in Fig. 8;
Figure 10 is the collaborative share system configuration schematic diagram of the embodiment of the present invention four;
Figure 11 is the collaborative share system configuration schematic diagram of the embodiment of the present invention five.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present invention is described in more detail.In various figures, identical element adopts same or similar Reference numeral to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
As shown in Figure 4, be the collaborative share system configuration schematic diagram of the embodiment of the present invention one.In the present embodiment, comprise four kinds of signal access devices, satellite-signal access device 3001a, studio signal access device 3001b, live signal access device 3001c and channel signals line access equipment 3001d.These four kinds of signal access devices are connected with the input/output terminal of video/audio matrix 4001 respectively, and another input/output terminal of video/audio matrix 4001 is connected with channel 2 cut bank 7001b with channel 1 cut bank 7001a.Matrix majorization server 6001 is connected with video/audio matrix 4001, for connecting the signal route from signal access device to cut bank.
Composition graphs 5, Fig. 5 is the collaborative share method flow diagram based on system shown in Figure 4.Because these four video equipments are signal access device, so, need artificially to know its content in advance, when needed, as step S1001, inquire about its state by matrix majorization server 6001.In matrix majorization server 6001, record the state of each signal access device and target device, namely whether signal access device is in available state.There is signal to provide when inquiring it, namely showing that this equipment is in upstate.
Step S1002, this equipment selected, and select a target device, as the cut bank of which channel.
Step S1003, controls video/audio matrix 4001 by matrix majorization server 6001, connects the signal route from signal access device to cut bank.
Step S1004, matrix majorization server 6001 revises the state of this signal access device and target device.
As shown in Figure 6, be the collaborative share system configuration schematic diagram of the embodiment of the present invention two.Within the system, two work station 1002a, 1002b, equipment Control Server 2002, four video tape recorder 3002a-3002d, video/audio matrix 4002, video server 5002, matrix majorization server 6002 and two channel switch platforms 7002a, 7002b are comprised.Wherein, two work stations 1002a, 1002b are connected with matrix majorization server 6002 with equipment Control Server 2002 respectively by network; Equipment Control Server 2002 is connected with each video tape recorder 3002a-3002d by control line; The video/audio signal of each video tape recorder 3002a-3002d is connected to the input of video/audio matrix 4002, enters video/audio matrix 4002 as input signal.The output of video/audio matrix 4002 is connected respectively to the coding pass (for uploading) of video server 5002 and cut bank 7002a, 7002b (for broadcast) of broadcast.Compared with embodiment one, embodiment adds work station and equipment Control Server, control command, by the control command of network reception work station, through protocol conversion, is sent to video equipment by control line by described equipment Control Server.
As shown in Figure 7, be the flow chart of the collaborative share method based on two system embodiment illustrated in fig. 6.Composition graphs 6, Fig. 7, below set forth the collaborative share method that described embodiment two provides.In this embodiment, work station 1002a will select two video tape recorders to carry out emergent broadcast for channel 1.Its step is as follows:
Step S2001, work station 1002a send inquiry request to described equipment Control Server 2002;
Step S2002, described equipment Control Server 2002 is inquired about the state information of each video tape recorder 3002a-3002d and this state information is returned to described work station 1002a after receiving the inquiry request that work station 1002a sends.Record the state of each video tape recorder in equipment Control Server 2002, and according to the operating state of video tape recorder, be recorded as idle respectively and take two states information.
Step S2003, after work station 1002a receives the operating state of each video tape recorder, two idle video tape recorder 3002b, 3002d are selected (to suppose that current video tape recorder 3002a and video tape recorder 3002c is carrying out uploading task, and video tape recorder 3002b, video tape recorder 3002d is idle), equipment Control Server 2002 as described in job order and the video tape recorder of this job order of operation chosen and the identity identification information (as id number) of channel 1 are sent to.
Step S2004, described equipment Control Server 2002 determines described work station 1002a and the corresponding relation between video tape recorder 3002b, 3002d.
Step S2005, work station 1002a sends control information to matrix majorization server 6002, and this control information comprises the broadcast cut bank 7002a of the channel 1 of video tape recorder 3002b, 3002d and correspondence.
Step S2006, described matrix majorization server 6002 controls described video/audio matrix 4002, connects corresponding video tape recorder 3002b, 3002d route to corresponding channel switch platform 7002a, thus thus formed matrix channel.When this matrix channel is connected, and when performing current task, matrix majorization server 4002 is locked, and does not allow other tasks to seize this passage, does not also allow manually to change this matrix passage.Thus, when video tape recorder operationally, artificially can not be interrupted, or broadcast by mistake owing to reusing this passage mistakenly or upload by mistake.Thus ensure that the continuous and safety broadcasted or upload.This passage locks by the Non-follow control lock that hardware is arranged by matrix majorization server 4002, also can by the holding time of this passage of matrix server record, seizure condition is set it at this moment, when receiving when this passage is seizure condition the instruction reusing this passage, namely during instruction afoul with this route, do not perform the instruction of this conflict, and send warning message.
Step S2007, the notice that described matrix majorization server 6002 is formed to work station 1002a sending metrix passage;
Step S2008, after work station 1002a receives this notice, sends status modifier and work initiate notification to described equipment Control Server 2002.
Step S2009, after described equipment Control Server 2002 receives described notice, controls corresponding video tape recorder 3002b and 3002d and executes the task according to job order, the state information of the video tape recorder of executing the task at present is revised as taking by the free time simultaneously.When the task of this video tape recorder complete be in idle condition time, then change the state information of this video tape recorder into the free time.In the course of the work, the order that equipment Control Server 2002 receiving workstation 1002a sends, controls video tape recorder 3002b, 3002d according to this order.
Alternatively, work station 1002a, according to current each equipment working condition, shows current operating state with word, form or illustrated method.As the present embodiment, when video tape recorder 3002b, 3002d provide emergent broadcast for channel 1, video tape recorder 3002b, 3002d can be shown for channel 1 provides the emergent diagram broadcasted in display page.Or with the equipment working condition that word, form or illustrated method record are current in equipment Control Server 2002, and the request of this state foundation work station can be sent to work station.
Fig. 8 is the collaborative share structural representation of the embodiment of the present invention three; Fig. 9 is the collaborative share method schematic diagram based on structure shown in Fig. 8.As shown in Figure 8, be with Fig. 6 difference, equipment Control Server 2003 is connected with matrix majorization server 6003 and intercoms mutually.Equipment Control Server 2003 is by the operating state of each video tape recorder connected, namely idle or take, and sends to described work station.Above-mentioned information is recorded in work station.
In this embodiment three, identical with the task of embodiment, namely work station 1003a will select two video tape recorders to carry out emergent broadcast for channel 1.Detailed process as shown in Figure 9.
Step S3001, work station 1003a inquires about the operating state of each video tape recorder wherein recorded, video tape recorder 3003b, the 3003d being in idle condition is selected (to suppose that current video tape recorder 3003a and video tape recorder 3003c is carrying out uploading task, and video tape recorder 3003b, video tape recorder 3003d are idle);
Job order and the identity identification information (id number) of video tape recorder 3003b, 3003d of this job order of operation that chooses are sent to described equipment Control Server 2003 by step S3002, work station 1003a.
Step S3003, described equipment Control Server 2003 receives described job order and for after the video tape recorder ID that executes the task, determines the corresponding relation of work station 1003a and video tape recorder 3003b, 3003d.According to this corresponding relation, described equipment Control Server 2003, in this subtask, when after the instruction receiving this work station, just can determine to be the video tape recorder that this work station is selected by the operand of this instruction.When multiple work stations in the present system control the work of different video equipment simultaneously, equipment Control Server is according to the corresponding relation between each work station video equipment corresponding to it, exactly the order at different operating station can be transmitted to the video equipment corresponding with them respectively, or control the video equipment work corresponding with them according to the order that different operating station is sent.
Step S3004, described equipment Control Server 2003 sends control information to matrix majorization server 6003, and this control information comprises the broadcast cut bank 7003a of the channel 1 of video tape recorder 3003b, 3003d and correspondence.
Step S3005, described matrix majorization server 6003 controls described video/audio matrix 4003, connects corresponding video tape recorder 3003b, 3003d signal route to corresponding channel switch platform 7003a, forms matrix channel thus.When this matrix channel is connected, and when performing current task, matrix majorization server 4003 is locked, and does not allow other tasks to seize this passage, does not also allow manually to change this matrix passage.Thus, when video tape recorder operationally, artificially can not be interrupted, or broadcast by mistake owing to reusing this passage mistakenly or upload by mistake.Thus ensure that the continuous and safety broadcasted or upload.
Step S3006, the notice that described matrix majorization server 6003 is formed to described equipment Control Server 2003 sending metrix passage;
Step S3007, after described equipment Control Server 2003 receives this notice, control corresponding video tape recorder 30003b and 3003d to execute the task according to job order, the state information of the video tape recorder of executing the task at present and channel 1 cut bank 7003a is revised as taking simultaneously by the free time.When its task completes, then be revised as the free time.
Step S3008, described equipment Control Server 2003 sends current state information to work station 1003a.
Step S3009, after described work station 1003a receives described state information, revises its recorded information, video tape recorder 3003b, 3003d is labeled as and takies, and the operating state of channel 1 is carried out being designated video tape recorder broadcast.Identification information described here can be adopted in various manners, as word, form or schematic diagram etc.
Above embodiment two, three carries out emergent broadcast for adopting video tape recorder to a certain channel, also carries out uploading of program material simultaneously, uploads in video server by the program material in video tape recorder.When there being the program material in multiple video equipment to need to upload, method flow diagram shown in Fig. 7 or Fig. 9 can be adopted to carry out upload operation, with broadcast operate unlike, while selection is in the video equipment of upstate, also need the coding pass of the video server selecting to be in upstate.What video/audio matrix was communicated with is the signal route of corresponding coding pass in corresponding video tape recorder to video server.Now, equipment Control Server, when signal route is connected, needs to control corresponding coding pass startup work in video server 50.
As shown in Figure 10, be the collaborative share system configuration schematic diagram of the embodiment of the present invention four.In the present embodiment, satellite-signal access device 3004a, studio signal access device 3004b, live signal access device 3004c are connected with work station 1004a, 1004b respectively by equipment Control Server 2004 with channel signals line access equipment 3004d.Video/audio matrix 4004, except being connected with cut bank 7004a, 7004b, is also connected with the coding pass of video server 5004.Therefore, the present embodiment not only can realize the broadcast function of embodiment one, broadcast material can also be uploaded to video server 5004.Its method flow and Fig. 7,9 similar, difference is, while the described signal access device current state of inquiry, also inquires about the state of the coding pass of described video server, wherein, the upstate of the coding pass of described video server is idle condition; While selecting to be in the signal access device of upstate, select the coding pass being in the video server of upstate; Described equipment Control Server controls the coding pass work of described video server, thus carry out program material upload work.
Above embodiment is all explanations of system and method when carrying out shared to background signal equipment, and technical scheme of the present invention can also be applied to key signals equipment.As shown in figure 11, be the collaborative share system configuration schematic diagram of the embodiment of the present invention five.In the present invention, video equipment comprises station caption machine 3005a, film titler 3005b, video tape recorder 3005c-3005d, and target device is channel 1 cut bank 7005a and channel 1 cut bank 7005b.The method flow of the present embodiment is substantially identical with preceding embodiment, does not repeat them here.Half, in the cut bank of channel, generally includes key and mixes signal input part and background signal input.What video equipment in embodiment one to embodiment four exported is all background signals, therefore, when target device is channel switch platform, and the background signal input of what video/audio matrix connected is channel switch platform.In the present embodiment, some equipment, as video tape recorder, output be background signal, and the key signals that station caption machine and film titler export, therefore, when selecting station caption machine and film titler, the key of what video/audio matrix connected is corresponding channel switch platform mixes signal input part.Because the structure etc. for cut bank is prior art, therefore, no longer describe in detail at this.
According to embodiments of the invention as described above, these embodiments do not have all details of detailed descriptionthe, do not limit the specific embodiment that this invention is only described yet.Obviously, according to above description, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technical staff that the present invention and the amendment on basis of the present invention can be utilized well to use.The scope that protection scope of the present invention should define with the claims in the present invention is as the criterion.