CN202818514U - Multichannel video collection card - Google Patents
Multichannel video collection card Download PDFInfo
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- CN202818514U CN202818514U CN201220460863.3U CN201220460863U CN202818514U CN 202818514 U CN202818514 U CN 202818514U CN 201220460863 U CN201220460863 U CN 201220460863U CN 202818514 U CN202818514 U CN 202818514U
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Abstract
The utility model discloses a multichannel video collection card. The multichannel video collection card comprises: a video receiving and processing module which is connected with a data collection control module and is used for receiving at least a one-path video signal and processing the video signal; a time code receiving module which is connected with the data collection control module and is used for receiving a time code that is output synchronously along with each video frame of the video signal; and the data collection control module which is connected with the video receiving and processing module, the time code receiving module and a bus control interface, and is used for reading out data about the video signal that has been processed by the video receiving and processing module and the time code, and for writing the data into a memory of a computer via the bus control interface. The multichannel video collection card is capable of directly recording video output of a plurality of cameras, allows a plurality of recording devices to be saved, can replace a conventional single channel video collection card, has a simple structure, and enables costs to be saved.
Description
Technical field
The utility model relates to technical field of video processing, more specifically, relates to a kind of multi-channel video capture card.
Background technology
In the program making process of multiple-camera seat in the plane, at first need the vision signal of multiple cameras output is gathered, also need simultaneously timing code (the Time Code to vision signal, TC) gather, and vision signal and timing code write in the computer in the lump, form the program material for later stage compilation.In the later stage compilation of program, material from a plurality of seats in the plane of Same Scene, need to keep original relative time relation in different video track, therefore, need to adopt certain simultaneous techniques, such as choosing certain specific frame of video as time reference, perhaps when gathering vision signal, gather synchronous timing code etc.
In the prior art, the video acquisition of video camera output is divided into two kinds usually to the equipment of computer, a kind of is single pass PCI(Peripheral Component Interconnect, peripheral component interconnect) or PCIe(PCI express, quick peripheral component interconnect) video frequency collection card of interface, the video of direct acquisition camera output, in the flow process of directly acquisition camera output, every video camera all needs a video frequency collection card, the polylith video frequency collection card may need to be installed in many computers, system cost is high, complex structure.
Another kind of equipment is that video record with video camera output is to the storage mediums such as tape or CD, and then the output video of collection player, in the flow process that gathers player output, owing to need to record synchronously the output of multiple cameras, therefore, need many video recording equipments, with high costs, simultaneously, the video material that is recorded on the storage mediums such as tape is collected in the computer, need again the extra time, reduced operating efficiency.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of multi-channel video capture card, can solve the cost height, complex structure and the ineffective problem that exist in the prior art.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of multi-channel video capture card is provided, comprise: video reception processing module, timing code receiver module, data acquisition and control module and bus control interface, wherein, described video reception processing module, be connected with described data acquisition and control module, be used for receiving at least one road vision signal and described vision signal being processed; Described timing code receiver module is connected with described data acquisition and control module, is used for receiving the timing code of exporting with every video frame synchronization of described vision signal; Described data acquisition and control module, be connected with described video reception processing module, described timing code receiver module and the bus control interface of being connected, be used for described vision signal that described video reception processing module is handled well and the data reading of described timing code, and write the internal memory of computer by described bus control interface.
Preferably, described multi-channel video capture card also comprises: the switching point receiver module, be connected with described data acquisition and control module, and be used for receiving seat in the plane switching time and change action.
Preferably, described data acquisition and control module also is used for the data reading with described switching time and change action, and writes the internal memory of computer by described bus control interface.
Preferably, described video reception processing module comprises: at least one video reception unit, at least one video compression unit and buffer storage unit, wherein,
Each described video reception unit, corresponding one by one with each described video compression unit, be used for to receive one tunnel vision signal, described vision signal is converted to the parallel digital video signal after, export to described video compression unit;
Each described video compression unit is connected with described video reception unit, described buffer storage unit, is used for described parallel digital video signal is carried out exporting to described buffer storage unit after the Real Time Compression;
Described buffer storage unit, with each described video compression unit be connected data acquisition and control module and be connected, be used for the described parallel digital video signal after the compression of at least one road is carried out buffer-stored, read for the data of described data acquisition and control module to the described vision signal after compressing.
Preferably, described video reception processing module also comprises: at least one breviary frame generation unit, corresponding one by one with each described video reception unit, be used for receiving the parallel digital video signal of described video reception unit output, each frame to described parallel digital video signal carries out the resolution reduction and generates thumbnail in horizontal and vertical directions, and described thumbnail is exported to described buffer storage unit.
Preferably, described video reception processing module also comprises: at least one diverter switch, corresponding one by one with each described video reception unit, each described video compression unit, be used for selecting one the tunnel from the parallel digital video signal of described video reception unit output and the compressed video signal of described video compression unit output, output to described buffer storage unit.
Preferably, described bus control interface is connected on the described system for computer bus.
Technique effect of the present utility model:
1. the multi-channel video capture card has a plurality of video reception unit, and many video recording equipments have been saved in video output that can the direct recording multiple cameras, have substituted existing single pass video frequency collection card, and simple in structure, system cost is low;
2. the utility model can be when gathering video image by special timing code receiver module, gather the timing code of every video frame synchronization output of video image so that computer acquisition to video file can be directly used in the later stage program making of supporting timing code;
3. some multimachine position program is in recording process, just make cut bank by operation at studio and carry out the seat in the plane switching, formed the program video of rough cut, because the utility model is provided with the switching point receiver module, be used for receiving seat in the plane switching time and change action, handover operation has been carried out relative recording, the program material and the on-the-spot handover operation that have kept all seats in the plane, in post production process, make things convenient for the editorial staff on the basis of rough cut, program to be carried out edit-modify, improved operating efficiency.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation according to the multi-channel video capture card of embodiment one of the present utility model;
Fig. 2 shows the structural representation according to the multi-channel video capture card of embodiment two of the present utility model;
Fig. 3 shows the structural representation according to the multi-channel video capture card of embodiment three of the present utility model;
Fig. 4 shows the structural representation according to the multi-channel video capture card of embodiment four of the present utility model;
Fig. 5 shows the structural representation according to the multi-channel video capture card of embodiment five of the present utility model;
Fig. 6 shows the flow chart according to the processing method of the multi-channel video capture card of embodiment six of the present utility model.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Embodiment one
Fig. 1 shows the structural representation according to the multi-channel video capture card of embodiment one of the present utility model, and this multi-channel video capture card is installed in the computer, is used for gathering vision signal and the timing code of at least one picture output device output.
The picture output device that present embodiment is mentioned can for video camera, player etc. can outputting video signal all devices, be not construed as limiting at this.
Because the output video of many picture output devices is regularly asynchronous, present embodiment has been introduced synchronizing generator, and all picture output devices will with synchronizing generator as the reference clock, make the output video Timing Synchronization of many picture output devices.
As shown in Figure 1, this multi-channel video capture card comprises: video reception processing module 10, timing code receiver module 20, data acquisition and control module 30 and bus control interface 40, wherein,
Video reception processing module 10 is connected with data acquisition and control module 30, is used for receiving at least one road vision signal and vision signal being processed;
Timing code receiver module 20 is connected with data acquisition and control module 30, is used for receiving the timing code of exporting with every video frame synchronization of vision signal; The every frame of video of timing code receives one group, with the data synchronous acquisition of the vision signal of handling well in calculator memory;
In the present embodiment, timing code receiver module 20 can come the time of reception code by special timing code interface from arbitrary picture output device, and the timing code that receives is the LTC(LTC Longitudinal Time Code) timing code; For the timing code that makes the output of all picture output devices is consistent, every picture output device has a timing code output interface and a timing code input interface; For example, we can be with the timing code of the 1st picture output device as a reference, then the timing code output interface of the 1st picture output device is exported to the 2nd picture output device with timing code, the 2nd picture output device receives from the 1st timing code that picture output device transmits by the timing code input interface, by that analogy, N platform picture output device acquisition time code from N-1 platform picture output device, then N platform picture output device is exported to timing code receiver module 20 by the timing code output interface with timing code;
The timing code of code generator as a reference when we can also utilize one, at this moment, suppose the 1st picture output device from the time code generator the acquisition time code, the 2nd picture output device acquisition time code from the 1st picture output device then, by that analogy, N platform picture output device acquisition time code from N-1 platform picture output device, then N platform picture output device is exported to timing code receiver module 20 by the timing code output interface with timing code.
Data acquisition and control module 30, are connected with bus control interface with video reception processing module 10, timing code receiver module 20 and are connected, be used for described vision signal that video reception processing module 10 is handled well and the data reading of described timing code, and write the internal memory of computer by bus control interface 40.
Wherein, bus control interface 40 is connected on the system for computer bus, receive data and send data to system bus from the system bus.
In the prior art, be the video frequency collection card of single pass PCI or PCIe interface, the video of direct acquisition camera output, every video camera all needs a video frequency collection card, and the polylith video frequency collection card may need to be installed in many computers; The video record of perhaps video camera being exported is to the storage mediums such as tape or CD, and then the output video of collection player, owing to need to record synchronously the output of multiple cameras, therefore, need many video recording equipments, system cost is high, complex structure.And the multi-channel video capture card of the utility model embodiment can the direct recording multiple cameras video output, saved many video recording equipments, substituted existing single pass video frequency collection card, simple in structure, system cost is low; This system can gather the timing code of every video frame synchronization output of video image by special timing code receiver module when gathering video image so that computer acquisition to video file can be directly used in the later stage program making of supporting timing code.
Embodiment two
As shown in Figure 2, can also comprise in the multi-channel video capture card among the embodiment one: switching point receiver module 50, be connected with data acquisition and control module 30, be used for receiving seat in the plane switching time and change action, wherein,
Data acquisition and control module 30 also is used for the data reading with described switching time and change action, and writes the internal memory of computer by bus control interface 40.
Some multimachine position program is in recording process, just make cut bank by operation at studio and carry out the seat in the plane switching, as shown in Figure 2, present embodiment has been introduced cut bank, cut bank receives the vision signal of many picture output device outputs, operating personnel carry out the seat in the plane by cut bank to multi-channel video and switch, the multi-channel video signal that receives is exported to video reception processing module 10, switching time and change action are exported to switching point receiver module 50, and change action refers to and switches to which vision signal.
Because the utility model embodiment is provided with the switching point receiver module, be used for receiving seat in the plane switching time and change action, handover operation has been carried out relative recording, the program material and the on-the-spot handover operation that have kept all seats in the plane, formed the program video of rough cut, in post production process, made things convenient for the editorial staff on the basis of rough cut, program to be carried out edit-modify, improved operating efficiency.
Embodiment three
As shown in Figure 3, can comprise in the video reception processing module 10 in the multi-channel video capture card among the embodiment one and two: at least one video reception unit 102, at least one video compression unit 104 and buffer storage unit 106, wherein,
Each video reception unit 102, corresponding one by one with each video compression unit 104, be used for to receive one tunnel vision signal, described vision signal is converted to the parallel digital video signal after, export to video compression unit 104;
Each video compression unit is connected with video reception unit 102, buffer storage unit 106, is used for described parallel digital video signal is carried out exporting to buffer storage unit 106 after the Real Time Compression;
Bus control interface 40 provides local bus to system for computer bus (PCI(Peripheral Component Interconnect, peripheral component interconnect), PCIe(PCI express, fast peripheral component interconnect) etc.) between bridging logic.The write data requests that video acquisition program in the computer sends by bus control interface 40 receive data acquisition control module 30, generate PCIe memory write packet, send to the PCIe root node of computer by the PCIe bus of computer, and then data are stored in the calculator memory.
Embodiment four
As shown in Figure 4, can also comprise in the video reception processing module 10 in the multi-channel video capture card among the embodiment three: at least one breviary frame generation unit 108, corresponding one by one with each video reception unit 102, the parallel digital video signal that is used for 102 outputs of receiver, video receiving element, each frame to described parallel digital video signal carries out the resolution reduction and generates thumbnail in horizontal and vertical directions, and described thumbnail is exported to described buffer storage unit 106.
Among the embodiment of the present utility model, because computer monitors in gatherer process in real time, need to decompress in real time to compressed and multiplexed video, the computer burden is heavier, therefore this multi-channel video capture card is provided with breviary frame generation unit, by generating incompressible thumbnail for every two field picture, made things convenient for computer in gathering the vision signal process, every road video to be supervised.
Embodiment five
As shown in Figure 5, can also comprise in the video reception processing module 10 in the multi-channel video capture card among the embodiment four: at least one diverter switch 110, corresponding one by one with each video reception unit 102, each video compression unit 104, be used for selecting one the tunnel from the parallel digital video signal of video reception unit 102 outputs and the compressed video signal of video compression unit 104 outputs, output to buffer storage unit 106.
Among the embodiment of the present utility model, because the multi-channel video capture card is provided with diverter switch, can allow system select to gather the vision signal of compressed format or the vision signal of unpacked format, in the situation of system bandwidth and disposal ability permission, can select the vision signal of unpacked format to gather, at this moment, computer can carry out more flexibly video signal compression coding.
Embodiment six
The processing method of the multi-channel video capture card among the embodiment one to five as shown in Figure 6, may further comprise the steps:
Step S602, the video reception processing module receives at least one road vision signal and described vision signal is processed; Concrete,
Step S602-1, each video reception unit receives one tunnel vision signal, described vision signal (for example is converted to the parallel digital video signal, serial digital video signal is converted to the parallel digital video signal, perhaps, analog video signal is converted to again parallelization behind the digital video signal) after, video compression unit, breviary frame generation unit and diverter switch exported to;
Step S602-2, each video compression unit carries out exporting to diverter switch after the Real Time Compression to the parallel digital video signal;
Step S602-3, the parallel digital video signal of each breviary frame generation unit receiver, video receiving element output, each frame to the parallel digital video signal carries out the resolution reduction and generates thumbnail in horizontal and vertical directions, and thumbnail is exported to buffer storage unit;
Step S602-4, each diverter switch selects one the tunnel from the compressed video signal that parallel digital video signal and the video compression unit of video reception unit output are exported, output to described buffer storage unit;
Described parallel digital video signal or the data such as non-compression video signal, thumbnail after step S602-5, buffer storage unit compress at least one road are carried out buffer-stored.
Step S604, timing code receiver module receive the timing code of exporting with every video frame synchronization of described vision signal;
Step S606, the described vision signal that data acquisition and control module will be handled well and the data reading of described timing code, and write the internal memory of computer by bus control interface.
The multi-channel video capture card of the utility model embodiment can the direct recording multiple cameras video output, saved many video recording equipments or many computers, substituted existing single pass video frequency collection card, simple in structure, system cost is low; This system can gather the timing code of every video frame synchronization output of video image by special timing code receiver module when gathering video image so that computer acquisition to video file can be directly used in the later stage program making of supporting timing code.
Embodiment seven
In the method for embodiment six, also comprise: the switching point receiver module receives seat in the plane switching time and change action, and data acquisition and control module is the data reading of described switching time and change action, and writes the internal memory of computer by described bus control interface.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
1. the multi-channel video capture card has a plurality of video reception unit, and many video recording equipments have been saved in video output that can the direct recording multiple cameras, have substituted existing single pass video frequency collection card, and simple in structure, system cost is low;
2. the utility model can be when gathering video image by special timing code receiver module, gather the timing code of every video frame synchronization output of video image so that computer acquisition to video file can be directly used in the later stage program making of supporting timing code;
3. some multimachine position program is in recording process, just make cut bank by operation at studio and carry out the seat in the plane switching, formed the program video of rough cut, because the utility model is provided with the switching point receiver module, be used for receiving seat in the plane switching time and change action, handover operation has been carried out relative recording, the program material and the on-the-spot handover operation that have kept all seats in the plane, in post production process, make things convenient for the editorial staff on the basis of rough cut, program to be carried out edit-modify, improved operating efficiency.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. a multi-channel video capture card is characterized in that, comprising: video reception processing module, timing code receiver module, data acquisition and control module and bus control interface, wherein:
Described video reception processing module is connected with described data acquisition and control module, is used for receiving at least one road vision signal and described vision signal being processed;
Described timing code receiver module is connected with described data acquisition and control module, is used for receiving the timing code of exporting with every video frame synchronization of described vision signal;
Described data acquisition and control module, be connected with described video reception processing module, described timing code receiver module and the bus control interface of being connected, be used for described vision signal that described video reception processing module is handled well and the data reading of described timing code, and write the internal memory of computer by described bus control interface.
2. multi-channel video capture card according to claim 1 is characterized in that, also comprises: the switching point receiver module, be connected with described data acquisition and control module, and be used for receiving seat in the plane switching time and change action.
3. multi-channel video capture card according to claim 2 is characterized in that, described data acquisition and control module also is used for the data reading with described switching time and change action, and writes the internal memory of computer by described bus control interface.
4. multi-channel video capture card according to claim 1 is characterized in that, described video reception processing module comprises: at least one video reception unit, at least one video compression unit and buffer storage unit, wherein,
Each described video reception unit, corresponding one by one with each described video compression unit, be used for to receive one tunnel vision signal, described vision signal is converted to the parallel digital video signal after, export to described video compression unit;
Each described video compression unit is connected with described video reception unit, described buffer storage unit, is used for described parallel digital video signal is carried out exporting to described buffer storage unit after the Real Time Compression;
Described buffer storage unit, with each described video compression unit be connected data acquisition and control module and be connected, be used for the described parallel digital video signal after the compression of at least one road is carried out buffer-stored, read for the data of described data acquisition and control module to the described vision signal after compressing.
5. multi-channel video capture card according to claim 4 is characterized in that, described video reception processing module also comprises:
At least one breviary frame generation unit, corresponding one by one with each described video reception unit, be used for receiving the parallel digital video signal of described video reception unit output, each frame to described parallel digital video signal carries out the resolution reduction and generates thumbnail in horizontal and vertical directions, and described thumbnail is exported to described buffer storage unit.
6. multi-channel video capture card according to claim 4 is characterized in that, described video reception processing module also comprises:
At least one diverter switch, corresponding one by one with each described video reception unit, each described video compression unit, be used for selecting one the tunnel from the parallel digital video signal of described video reception unit output and the compressed video signal of described video compression unit output, output to described buffer storage unit.
7. multi-channel video capture card according to claim 1 is characterized in that, described bus control interface is connected on the described system for computer bus.
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| CN201220460863.3U CN202818514U (en) | 2012-09-11 | 2012-09-11 | Multichannel video collection card |
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| CN201220460863.3U CN202818514U (en) | 2012-09-11 | 2012-09-11 | Multichannel video collection card |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686039A (en) * | 2012-09-11 | 2014-03-26 | 北京同步科技有限公司 | Multichannel video capture card and processing method thereof |
| CN105100663A (en) * | 2014-05-15 | 2015-11-25 | 北京同步科技有限公司 | Recording system based on hardware encoders, audio and video processing apparatus, and recording method |
| CN112437240A (en) * | 2021-01-27 | 2021-03-02 | 南京美乐威电子科技有限公司 | Video frame and time code binding method, video file recording method and encoder |
-
2012
- 2012-09-11 CN CN201220460863.3U patent/CN202818514U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686039A (en) * | 2012-09-11 | 2014-03-26 | 北京同步科技有限公司 | Multichannel video capture card and processing method thereof |
| CN105100663A (en) * | 2014-05-15 | 2015-11-25 | 北京同步科技有限公司 | Recording system based on hardware encoders, audio and video processing apparatus, and recording method |
| CN105100663B (en) * | 2014-05-15 | 2019-04-23 | 北京同步科技有限公司 | Recording system, audio-video processing unit and method for recording based on hardware coder |
| CN112437240A (en) * | 2021-01-27 | 2021-03-02 | 南京美乐威电子科技有限公司 | Video frame and time code binding method, video file recording method and encoder |
| CN112437240B (en) * | 2021-01-27 | 2021-04-09 | 南京美乐威电子科技有限公司 | Video frame and time code binding method, video file recording method and encoder |
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