CN104735383A - Anti-interference high-definition recording and broadcasting system - Google Patents
Anti-interference high-definition recording and broadcasting system Download PDFInfo
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- CN104735383A CN104735383A CN201510148277.3A CN201510148277A CN104735383A CN 104735383 A CN104735383 A CN 104735383A CN 201510148277 A CN201510148277 A CN 201510148277A CN 104735383 A CN104735383 A CN 104735383A
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- switching circuit
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- writing
- dsp chip
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Abstract
The invention discloses an anti-interference high-definition recording and broadcasting system which comprises writing equipment and a wide-angled camera. A pressure sensor is arranged in the writing equipment and used for receiving sensing signals generated during writing, an auxiliary camera is arranged close to the wide-angled camera, both the wide-angled camera and the auxiliary camera are connected with a switching circuit, the switching circuit controls the corresponding camera to work, the switching circuit is connected to a computer connected with a signal conversion module, and the signal conversion module is connected to a signal sensor. The anti-interference high-definition recording and broadcasting system overcomes the defects in the prior art and is reasonable in layout, noise in signals converted through an audio AD converter is filtered out by arranging a self-adaptive noise filtering circuit so as to obtain accurate sound signals, a video collection device is combined, and the position of a speaker can be judged accurately; meanwhile, a blackboard-writing close-up image pickup system is arranged, the signals are transmitted through pressure sensing vibration, and erroneous judgment and triggering range boundedness caused by image range limitation are avoided.
Description
Technical field
The present invention relates to Digital Teaching information collecting device technical field, specifically belong to a kind of anti-interference high definition recording and broadcasting system.
Background technology
Recording and broadcasting system can while teacher gives lessons on the spot, automatic generation recording in classroom teaching video recording, intactly record the overall process of teachers' instruction, comprise the Multimedia Teaching Courseware etc. of the process that teacher lectures, process that writing on the blackboard is write and use, automatically edit generation according to the time sequencing of giving lessons to give lessons live video, can also carry out live simultaneously in the streaming media on the internet, make users as on-the-spot in classroom, can also reset in online program request after class.Existing recording and broadcasting system has debug difficulties, the common fault that effect is undesirable, its writing on the blackboard control mode mainly contains two kinds: one is infrared acquisition, and camera lens is followed and rotated shooting with the pen of infrared facility or tie clip Mike, but mode easily affects by external light source; Another kind is Camera Positioning, judges whether this switching by graphical analysis, and because image is by the impact of light source factor, which False Rate is high, and trigger range is little; Also has speech recognition exciting technique involved by the recording and broadcasting system of teaching field, mainly carried out shooting to follow the tracks of by recording and broadcasting system identification spokesman's voice, because religion indoor occupant is many, space-closed, non-key personnel's sounding and religion indoor echo can be produced, there is noise thus allow existing voice recognition technology occur erroneous judgement in the voice that existing teaching writing/playing system encoder gathers, video camera precisely cannot follow the tracks of spokesman.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of anti-interference high definition recording and broadcasting system, overcome the deficiencies in the prior art, rationally distributed, by arranging auto adapted noise filtering circuit, the noise filtering in the signal after audio A/D converter conversion is fallen, obtain accurate voice signal, and in conjunction with video acquisition device, the position of spokesman can be judged accurately; Be provided with writing on the blackboard feature shooting capturing system simultaneously, by pressure sensing vibration transmission signal, also do not produce the limitation of erroneous judgement and trigger range by image range restriction.
The technical solution used in the present invention is as follows:
A kind of anti-interference high definition recording and broadcasting system, comprise apparatus for writing and wide angle cameras, pressure inductor is provided with for receiving the induced signal of the generation of writing in described apparatus for writing, auxiliary camera is being provided with near described wide angle cameras side, described wide angle cameras is all connected with switching circuit with auxiliary camera, there is switching circuit to control its corresponding video camera and carry out work, switching circuit is connected to computer, connection signal modular converter on computer, signal conversion module is connected to signal transducer, signal transducer receives the signal transmitting pressure inductor and send, switching circuit is being given by the haircut of computer receiving area, control its associated camera and carry out work.
Dsp chip, audio-video collection module and interface module is comprised in described computer, audio-video collection module divides two-way to be connected respectively to audio A/D converter and video converter, video converter is directly connected to dsp chip, audio A/D converter is connected to noise filter circuit, noise filter circuit is connected to dsp chip, described interface module is connected on dsp chip, dsp chip is also connected to and records module, call output module and playback module, in computer, be also provided with data storage, data storage is directly connected on dsp chip.
Described wide angle cameras and auxiliary camera are equipped with horizontal and vertical 360 degree of rotating mechanisms rotated.
Described rotating mechanism comprises fixed head, fixed block and rotating turret, video camera is hingedly coupled on rotating turret, described video camera is spheric probe, be provided with rotation pusher above it, rotate pusher rotation and be arranged on rotating turret, rotating turret rear end is fixedly connected with rotation axis, rotation axis is fixed in fixed block, rotation axis upper end is provided with driven wheel, and driven wheel engages with the driving gear of drive motors, and fixed block is fixed on fixed head.
Compared with the prior art, beneficial effect of the present invention is as follows:
Noise filtering in signal after audio A/D converter conversion falls by arranging auto adapted noise filtering circuit by the present invention, obtains accurate voice signal, and in conjunction with video acquisition device, can judge the position of spokesman accurately; Be provided with writing on the blackboard feature shooting capturing system simultaneously, by pressure sensing vibration transmission signal, also do not produce the limitation of erroneous judgement and trigger range by image range restriction, completely not by the interference of any external light source.
Accompanying drawing explanation
Fig. 1 is the structural representation that present system is arranged;
Fig. 2 is computer-internal system configuration schematic diagram of the present invention;
Fig. 3 is wide angle cameras of the present invention and auxiliary camera arrangement schematic diagram.
Embodiment
See accompanying drawing, a kind of anti-interference high definition recording and broadcasting system, comprise apparatus for writing 1 and wide angle cameras 2, pressure inductor 3 is provided with for receiving the induced signal of the generation of writing in described apparatus for writing 1, auxiliary camera 4 is being provided with near described wide angle cameras 2 side, described wide angle cameras 2 is all connected with switching circuit 5 with auxiliary camera 4, there is switching circuit 5 to control its corresponding video camera and carry out work, switching circuit 5 is connected to computer 6, connection signal modular converter 7 on computer 6, signal conversion module 7 is connected to signal transducer 8, signal transducer 8 receives the signal transmitting pressure inductor 3 and send, switching circuit 5 is being given by the haircut of computer 6 receiving area, control its associated camera and carry out work, dsp chip, audio-video collection module and interface module is comprised in described computer 6, audio-video collection module divides two-way to be connected respectively to audio A/D converter and video converter, video converter is directly connected to dsp chip, audio A/D converter is connected to noise filter circuit, noise filter circuit is connected to dsp chip, described interface module is connected on dsp chip, dsp chip is also connected to and records module, call output module and playback module, in computer, be also provided with data storage, data storage is directly connected on dsp chip, described wide angle cameras 2 and auxiliary camera 4 are equipped with horizontal and vertical 360 degree of rotating mechanisms 9 rotated, described rotating mechanism 9 comprises fixed head 901, fixed block 902 and rotating turret 903, video camera is hingedly coupled on rotating turret 903, described video camera is spheric probe, be provided with above it and rotate pusher 904, rotating pusher 904 rotation is arranged on rotating turret 903, rotating turret 903 rear end is fixedly connected with rotation axis 905, rotation axis 905 is fixed in fixed block 902, rotation axis upper end is provided with driven wheel 9051, driven wheel 9051 engages with the driving gear of drive motors 906, fixed block 902 is fixed on fixed head 901, described rotating mechanism 9 has computer control.Be provided with writing on the blackboard feature shooting capturing system simultaneously, by pressure sensing vibration transmission signal, also do not produce the limitation of erroneous judgement and trigger range by image range restriction, completely not by the interference of any external light source.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (4)
1. an anti-interference high definition recording and broadcasting system, comprise apparatus for writing and wide angle cameras, it is characterized in that: be provided with pressure inductor in described apparatus for writing for receiving the induced signal of the generation of writing, auxiliary camera is being provided with near described wide angle cameras side, described wide angle cameras is all connected with switching circuit with auxiliary camera, there is switching circuit to control its corresponding video camera and carry out work, switching circuit is connected to computer, connection signal modular converter on computer, signal conversion module is connected to signal transducer, signal transducer receives the signal transmitting pressure inductor and send, switching circuit is being given by the haircut of computer receiving area, control its associated camera and carry out work.
2. the anti-interference high definition recording and broadcasting system of one according to claim 1, it is characterized in that: in described computer, comprise dsp chip, audio-video collection module and interface module, audio-video collection module divides two-way to be connected respectively to audio A/D converter and video converter, video converter is directly connected to dsp chip, audio A/D converter is connected to noise filter circuit, noise filter circuit is connected to dsp chip, described interface module is connected on dsp chip, dsp chip is also connected to recording module, call output module and playback module, also data storage is provided with in computer, data storage is directly connected on dsp chip.
3. the anti-interference high definition recording and broadcasting system of one according to claim 1 and 2, is characterized in that: described wide angle cameras and auxiliary camera are equipped with horizontal and vertical 360 degree of rotating mechanisms rotated.
4. the anti-interference high definition recording and broadcasting system of one according to claim 3, it is characterized in that: described rotating mechanism comprises fixed head, fixed block and rotating turret, video camera is hingedly coupled on rotating turret, described video camera is spheric probe, be provided with rotation pusher above it, rotating pusher rotation is arranged on rotating turret, rotating turret rear end is fixedly connected with rotation axis, rotation axis is fixed in fixed block, rotation axis upper end is provided with driven wheel, driven wheel engages with the driving gear of drive motors, and fixed block is fixed on fixed head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148277.3A CN104735383A (en) | 2015-04-01 | 2015-04-01 | Anti-interference high-definition recording and broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148277.3A CN104735383A (en) | 2015-04-01 | 2015-04-01 | Anti-interference high-definition recording and broadcasting system |
Publications (1)
| Publication Number | Publication Date |
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| CN104735383A true CN104735383A (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510148277.3A Pending CN104735383A (en) | 2015-04-01 | 2015-04-01 | Anti-interference high-definition recording and broadcasting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483783A (en) * | 2017-08-24 | 2017-12-15 | 无锡北斗星通信息科技有限公司 | A kind of gun type camera method of switching |
-
2015
- 2015-04-01 CN CN201510148277.3A patent/CN104735383A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483783A (en) * | 2017-08-24 | 2017-12-15 | 无锡北斗星通信息科技有限公司 | A kind of gun type camera method of switching |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |
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| WD01 | Invention patent application deemed withdrawn after publication |