CN201639680U - Video processor based on DMX (Digital Multipiex) protocol - Google Patents
Video processor based on DMX (Digital Multipiex) protocol Download PDFInfo
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- CN201639680U CN201639680U CN201020105668XU CN201020105668U CN201639680U CN 201639680 U CN201639680 U CN 201639680U CN 201020105668X U CN201020105668X U CN 201020105668XU CN 201020105668 U CN201020105668 U CN 201020105668U CN 201639680 U CN201639680 U CN 201639680U
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Abstract
The utility model discloses a video processor based on a DMX (Digital Multipiex) protocol, comprising a video input interface, a video processing module connected with the video input interface and a video output interface connected with the video processing module. The video processor is characterized by also comprising a DMX signal receiving and processing circuit connected with the video processing module. The video processor supports the DMX protocol and can be controlled by using a DMX signal; multiple video processors can cooperatively work under the control of the DMX signal, thereby realizing the automatic control of a video.
Description
Technical field
The utility model relates to video processor, specifically, relates to a kind of video processor based on the DMX agreement.
Background technology
Video processor as its name suggests, is a kind of video image processing apparatus; It supports the input of various video picture signal, and carries out high-quality image zoom and handle; It can carry out high-quality conversion to the video signal of the TV of video PAL/NTSC standard, compound and S-video, RGB, dissimilar different systems such as DVI, HDTV, and outputs to output, such as display screen etc., realizes video playback.
The LED video processor is to be specifically applied to the video processing equipment that LED display is play, and it has expanded input video source greatly, plays required various information materials such as video, animation and digital image for whole display system provides.Input video source commonly used can include but not limited to that pictures such as DVD, TV, camera generate equipment and PC computer etc.
Common video processor as shown in Figure 1, is to use the video input diverter switch that is arranged on the video processor control panel now, perhaps, and the video input switching key that uses a teleswitch, the next artificial handover operation of finishing input video source; If a very large-scale performance occasion, often have many video processor to use simultaneously, then controlling after adjustment before the performance beginning and the performance beginning will be one and have labour intensity and the quite professional work of skill.
DMX is the abbreviation of Digital Multiplex, Chinese translation is " a digital multiplex agreement ", define by U.S.'s arenas technology meeting (USITT), obtained at present countries in the world and produced admitting of light of stage equipment vendors and observe, as a kind of digital modulation photocontrol agreement of extensive employing.That is to say,, just can realize digitized light control as long as the controlled light unit of each in link meets the requirement of this agreement.
The DMX control signal is a unit with " frame ", and every frame data can drive 512 lighting circuits (DMX-512 agreement) at most, are also referred to as 512 DMX passages in the industry.Effective DMX numerical value of each DMX passage is between 0-255.This characteristic of DMX allows people to realize linearity light adjusting to lighting circuit by regulating DMX light modulation numerical value.Such as, the present LED light units of widespread more and more, the basic structure of its circuit as shown in Figure 2, LED's is luminous, can change along with the variation of the DMX control signal of being imported fully.The DMX controller is exactly a kind of equipment that continuously sends the DMX control signal to controlled light units.So, the light of stage designer can edit the light control program of each performance scene for certain performance design in advance, and promptly a section DMX control signal is stored in each DMX controller then; After performance beginning, only need to start the DMX controller of corresponding each performance scene, light units is about to only need few manual operation according to deduce the before the lights change of light of design in advance.The performance scene lamp light control method that this utilization DMX agreement realizes greatly reduces light of stage staff's labour intensity and operative skill requirement, and having become becomes more and more popular.
Can use the DMX agreement, as the control light units, come automatic control of video processor by the DMX controller, comprise, by programming the DMX signal is defined, make the break-make of the mains switch that the DMX passage of agreement and light modulation numerical value can corresponding control of video processor, the selection of input video source, the selection of standard, the selection of output format, the selection of sound channel, and the functions such as selection of picture convergent-divergent are the significant innovations that realizes that the stage automation is controlled.
Summary of the invention
The purpose of this utility model, being to solve video processor of the prior art can not be by the controlling of automation, and provides a kind of support DMX agreement, the video processor that can use the DMX signal to control, promptly a kind of video processor based on the DMX agreement.
A kind of video processor based on the DMX agreement of the present utility model is achieved in that
A kind of video processor based on the DMX agreement, comprised video input interface, the video processing module that is connected with video input interface, and the video output interface that is connected with video processing module, it is characterized in that, also comprised the DMX signal receiving processing circuit that is connected with described video processing module.
Preferred implementation is that described DMX signal receiving processing circuit has comprised the RS485 transceiver, microcontroller circuit and RS232 interface.
Implement the video processor based on the DMX agreement of the present utility model, can use the DMX signal to control one or more video processor, make that many video processor can collaborative work under the control of DMX signal, realized that the automation of video is controlled.
Description of drawings
Fig. 1 is the basic circuit organigram of conventional video processing device;
Fig. 2 is existing support DMX Protocols of LED light units circuit basic structure schematic diagram;
Fig. 3 is the electrical block diagram of the utility model video processor;
Fig. 4 is the electrical block diagram of the video processor of a kind of preferred implementation of the utility model;
Fig. 5 is the utilization principle schematic of the utility model DMX control signal.
Embodiment
Below, in conjunction with the accompanying drawings the video processor based on the DMX agreement of the present utility model is described in further detail.
As shown in Figure 3, a kind of video processor of the present utility model based on the DMX agreement, comprised video input interface, the video processing module that is connected with video input interface, and the video output interface that is connected with video processing module, also comprised the DMX signal receiving processing circuit that is connected with described video processing module.As shown in Figure 4, described DMX signal receiving processing circuit has comprised the RS485 transceiver, microcontroller circuit and RS232 interface.Fig. 1, Fig. 2 are consulted in contrast and Fig. 3 can find, video processor of the present utility model, adopted DMX signal receiving processing circuit, manual operation buttons such as video input diverter switch traditional among Fig. 1 have been substituted, thereby make video processor of the present utility model can support the DMX agreement, can use the DMX signal to finish break-make such as the mains switch of video processor, the selection of input video source, the selection of standard, the selection of output format, the selection of sound channel, and the functions such as selection of picture convergent-divergent; This has changed needs to use the various buttons that are arranged on the various buttons on the video processor control panel or use a teleswitch to finish the mode of operation of above-mentioned switch, switching etc. in the past, thereby makes the possibility of coming the control of video processor to become by the DMX signal.
Therefore, because the DMX signal had both been controlled the work of video processor, also controlling the digital modulation light device of LED.So, light of stage designer and stage video background designer can be certain performance collaborative work, design in advance edits the light of each performance scene and the control program of video background, and promptly one section DMX control signal is stored in the DMX controller then; After performance beginning, only need to start the DMX controller, light units and video processor are about to the design according in advance, and the change of deduce before the lights light and video image greatly reduces staff's labour intensity and operative skill requirement.
Aforesaid various DMX control signal, can be as shown in Figure 6, by the data that define certain DMX passage is that light controling signal, input video source select signal, video formats to select signal etc., all various DMX control signals is compiled one section DMX signal get final product.Conspicuous, introduction as the background technology part, because the DMX control signal is a unit with " frame ", every frame data include the numerical value of 512 DMX passages (referring to the DMX-512 agreement), that is: (1) DMX agreement provides 512 and can supply the control signal type of definition, and (2) all include the DMX signal numerical value of these 512 signal types in every frame data, thereby can drive this 512 defined controlled plants simultaneously.Therefore, as shown in Figure 6 with above-mentioned description: (A) the utility model can define the mains switch control signal that the numerical value of DMX passage 1 is video processor, and further definition, and when the numerical value of DMX was between 0-127, power supply was for closing.Then the stage designer can be at one section end of having compiled the DMX signal segment of light controling signal and video control signal, edit the data of a frame " numerical value of DMX passage 1 is 0 ", thereby realize the purpose of " use DMX signal is controlled the power supply of the utility model video processor " in the aforementioned preferred implementation, promptly, when the curtain falls, disconnect the power supply input of the utility model equipment, realize power-off operation.(B) can to define the numerical value of DMX passage 2 be the control signal that video input is selected to the utility model, and further definition: when the numerical value of DMX is between 0-63, be the control signal of connecting the camera video input; When the numerical value of DMX is between 64-127, be the control signal of connecting the input of TV signal video; When the numerical value of DMX is between 128-191, be the control signal of connecting the input of VCD machine video; When the numerical value of DMX is between 192-255, be the control signal of connecting the input of DVD player video.Then the stage designer can be in the one section DMX signal that is certain performance design, corresponding different respectively performance scene and different periods, the data of editor such as " numerical value of DMX passage 2 is 0 ", " numerical value of DMX passage 2 is 64 ", " numerical value of DMX passage 2 is 128 " etc., thereby realize the purpose of " video processor of the present utility model; the selection of its input video source; can finish automatically by the DMX control signal that design in advance edits, in performance is carried out, need not " in the aforementioned preferred implementation by the handover operation of manually finishing the video input.For the numerical value of definition DMX passage 3 is control signal of selecting of video formats or the like, because its principle and above-mentioned (A) and introducing (B) are similar, repeats no more herein.Conspicuous, if a very large-scale performance occasion, when the video processor of many playscripts with stage directions utility model used simultaneously, this employing DMX signal was unified central controlled method, will reduce stagehand's labour intensity and operative skill requirement greatly.
In a word, above-mentioned described several execution modes are not represented all implementations of the utility model; Above execution mode is not to concrete qualification of the present utility model, and all and the similar structure of technical solutions of the utility model all should belong to protection range of the present utility model.
Claims (2)
1. video processor based on the DMX agreement, comprised video input interface, the video processing module that is connected with video input interface, and the video output interface that is connected with video processing module, it is characterized in that, also comprised the DMX signal receiving processing circuit that is connected with described video processing module.
2. video processor according to claim 1 is characterized in that, described DMX signal receiving processing circuit has comprised the RS485 transceiver, microcontroller circuit and RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020105668XU CN201639680U (en) | 2010-01-28 | 2010-01-28 | Video processor based on DMX (Digital Multipiex) protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020105668XU CN201639680U (en) | 2010-01-28 | 2010-01-28 | Video processor based on DMX (Digital Multipiex) protocol |
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| Publication Number | Publication Date |
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| CN201639680U true CN201639680U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020105668XU Expired - Lifetime CN201639680U (en) | 2010-01-28 | 2010-01-28 | Video processor based on DMX (Digital Multipiex) protocol |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231796A (en) * | 2011-06-17 | 2011-11-02 | 佛山市毅丰电器实业有限公司 | Device and system for controlling camera based on digital multiplex (DMX)protocol |
| CN103024330A (en) * | 2012-12-13 | 2013-04-03 | 中国航空工业集团公司洛阳电光设备研究所 | Device for converting programmable array logic (PAL) video into digital video interactive (DVI) video |
-
2010
- 2010-01-28 CN CN201020105668XU patent/CN201639680U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231796A (en) * | 2011-06-17 | 2011-11-02 | 佛山市毅丰电器实业有限公司 | Device and system for controlling camera based on digital multiplex (DMX)protocol |
| CN103024330A (en) * | 2012-12-13 | 2013-04-03 | 中国航空工业集团公司洛阳电光设备研究所 | Device for converting programmable array logic (PAL) video into digital video interactive (DVI) video |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |