CN201893863U - Multipath audio-video signal switching device - Google Patents
Multipath audio-video signal switching device Download PDFInfo
- Publication number
- CN201893863U CN201893863U CN2010206833016U CN201020683301U CN201893863U CN 201893863 U CN201893863 U CN 201893863U CN 2010206833016 U CN2010206833016 U CN 2010206833016U CN 201020683301 U CN201020683301 U CN 201020683301U CN 201893863 U CN201893863 U CN 201893863U
- Authority
- CN
- China
- Prior art keywords
- channel
- module
- audio
- video
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
The utility model relates to a multipath audio-video signal switching device. A control part comprises a single chip microcomputer controller, and a keyboard and a control command transmitting module which are connected with the single chip microcomputer controller. A channel switching part comprises input ports of 2 to 50 video, accompanying sound and balance audio signals, which are connected with corresponding output ports after being respectively connected with corresponding channel switching compensator modules through anti-jamming processing modules The control command transmitting module is connected with a control command receiving module of the channel switching part, and the control command receiving module is connected with a channel choosing controller which is connected with the channel switching compensator modules. The single chip microcomputer controller generates a channel switching command according to a choice command input from the keyboard, the channel switching command is sent to the channel switching compensator modules through the channel choosing controller, and the channel is chosen to be switched to the corresponding output end. The single chip microcomputer controller is connected with a display device and is matched with a wireless remote controller. The input ports can be connected with various film and television sound facilities. The device can choose and switch 50 video-audio signals freely and the output has no intermodulation and crosstalk disturbance.
Description
(1) technical field
The utility model relates to the audio-video signal treatment technology, is specially a kind of multichannel audio-video frequency signal switching apparatus.
(2) background technology
Various audio frequency and video facilities such as television set, DVD, power amplifier, projector, multimedia computer server, video tape recorder often need to occur simultaneously at present, for example in multi-media classroom, meeting room, multifunctional hall, exhibition room, KTV or other public place of entertainment.Owing to have only a display unit (as display or projecting apparatus or TV screen) and one group of sound equipment, can only pick out one road audio-video signal during use and play.This just need select the multichannel audio-video frequency signal of these equipment outputs to switch to be transported on one road audio-video signal passage to export on demand.Every road audio-video signal comprises vision signal, audio signal and balance audio signal.Existing this type of switching device price height only is applicable to the switching of 3 to 5 tunnel audio frequency and video, and it is unstable that output also can take place, and interchannel has the phenomenon of intermodulation, Intermodulation Interference and sound on vision, and output attenuatoin is bigger, and function is simpler, inconvenient operation.
(3) utility model content
The purpose of this utility model is a kind of multichannel audio-video frequency signal switching apparatus of design, input port with tens of roads video, sound accompaniment and audio signal, every road all is connected to anti-interference mould and handover module, and has the signal compensation function, and attenuated output signal is little and do not have intermodulation, intermodulation, a cross-talk.
The multichannel audio-video frequency signal switching apparatus of the utility model design comprises by multichannel audio-video frequency input port, switching device shifter and audio-video signal output port, this programme also has control section, and control section comprises singlechip controller and is attached thereto keyboard and the control command sending module that connects.The passage switching part of this programme design comprises the input port of 2～50 tunnel vision signals, the input port of the input port of 2～50 tunnel audio signals and 2～50 road Balanced Audio signals, connect 2～50 corresponding vision signal anti-interference process modules respectively, 2～50 audio signal anti-interference process modules and 2～50 Balanced Audio signal anti-interference process modules, each vision signal anti-interference process module insert video channel and switch compensating module, each audio signal anti-interference process module inserts sound channel and switches compensating module, each Balanced Audio signal anti-interference process module inserts the Balanced Audio passage and switches compensating module; Video channel is switched compensating module and is connect VT mouth, sound channel and switch that compensating module connects the audio signal output port, the Balanced Audio passage switches compensating module and connects the Balanced Audio signal output port.The passage switching part also has control command receiver module and channel selecting controller; The control command receiver module of the control command sending module interface channel switching part of control section, control command receiver module interface channel selection control, channel selecting controller connect video channel and switch compensating module, sound channel switching compensating module and balance voice-grade channel switching compensating module.
Use keyboard to singlechip controller incoming video signal passage, the select command of audio signal passage and balance audio signal channel, singlechip controller produces the switching channel order according to the select command of keyboard input, send to the control command receiver module of passage switching part by the control command sending module, the control command receiver module is sent order into the channel selecting controller, the channel selecting controller is sent the switching channel order into video channel respectively and is switched compensating module, sound channel switches compensating module and the balance voice-grade channel switches compensating module, and certain channel video signal is selected in control, audio signal passage and balance audio signal channel switch to the output of audio-video signal.
Video channel in this equipment is switched compensating module, sound channel switches compensating module and Balanced Audio passage switching compensating module is to be the switching channel selection circuit of core structure with field programmable gate array (FPGA) chip.
The singlechip controller of this equipment also is connected to display unit, can show current channel video signal, audio signal passage and the balance audio signal channel numbering that is switched to input port on display.Display unit is charactron or LCDs.
The singlechip controller of this equipment also is connected to wireless receiving module, is furnished with Digiplex.Digiplex comprises keypad, microcontroller and wireless transmitter module.But select command with the keypad on the Digiplex also incoming video signal passage, audio signal passage and balance audio signal channel, microcontroller sends the channel selecting order through wireless transmitter module, wireless receiving module receives to be sent into single-chip microcomputer after the command signal and control.The microcontroller of Digiplex also can connect display, and display is charactron or LCD, shows the passage of selecting.
Described video signal input terminal mouth can be connected anolog TV signals or digital television signal or VGA signal etc. with the audio signal input port, can connect various types of video display stereo sets.
The advantage of the utility model multichannel audio-video frequency signal switching apparatus is: 1, can realize 50 road videos/audio signal is switched arbitrarily, and the channel coding of switching is shown; Simultaneously can realize 50 road Balanced Audios are switched arbitrarily, and the channel coding of switching is shown; 2, can control the switching controls of multichannel voice frequency/video by the wired keyboard of conductor length≤1000m, also can carry out switching controls by Digiplex, easy to use; 3, isolation is greater than 25dB mutually between video/sound channel and the balance voice-grade channel, and in switching and transmission course, audio-video signal all satisfies each signalling channel output attenuatoin＜3dB; Each passage can be selected arbitrarily, and output signal does not have intermodulation, intermodulation, cross-talk; 4, the commutation circuit that adopts high performance fpga chip to constitute, switch speed is fast, exports more stablely, and clear image does not have interference such as intermodulation, intermodulation; 5, have the timing shutdown function, can set the time of timing shutdown, but and the Displaying timer time; 6, cost is lower, and quite high cost performance is arranged compared with similar products, is suitable for multi-media classroom, meeting room, and public place of entertainment such as KTV.
(4) description of drawings
Fig. 1 is the overall structure circuit block diagram of this multichannel audio-video frequency signal switching apparatus embodiment;
Fig. 2 is a Digiplex circuit structure block diagram among Fig. 1;
Fig. 3 is a passage switching part structural representation among Fig. 1.
(5) embodiment
This multichannel audio-video frequency signal switching apparatus embodiment comprises passage switching part and control section as shown in Figure 1; Control section comprises singlechip controller and keyboard that is attached thereto and control command sending module; Singlechip controller also is connected to LCDs, wireless receiving module, is furnished with Digiplex.
This routine singlechip controller also is connected to time block, and time block links to each other with the power circuit of equipment, can set the timing shutdown time by keyboard, and this unused time can show on display screen, and when arriving setting-up time, time block is cut off the electricity supply automatically.
This routine Digiplex structure comprises microcontroller and is attached thereto keypad, wireless transmitter module and the charactron that connects as shown in Figure 2.
This routine passage switching part structure as shown in Figure 3, the input port that comprises 30 tunnel vision signals, the input port of the input port of 30 tunnel audio signals and 12 road Balanced Audio signals, connect 30 corresponding vision signal anti-interference process modules respectively, 30 audio signal anti-interference process modules and 12 Balanced Audio signal anti-interference process modules, each vision signal anti-interference process module insert video channel and switch compensating module, each audio signal anti-interference process module inserts sound channel and switches compensating module, each Balanced Audio signal anti-interference process module inserts the Balanced Audio passage and switches compensating module; Video channel is switched compensating module and is connect VT mouth, sound channel and switch that compensating module connects the audio signal output port, the Balanced Audio passage switches compensating module and connects the Balanced Audio signal output port; Switching part also has control command receiver module and channel selecting controller; The control command receiver module of the control command sending module interface channel switching part of control section, control command receiver module interface channel selection control, channel selecting controller connect video channel and switch compensating module, sound channel switching compensating module and balance voice-grade channel switching compensating module.This routine video channel switching compensating module, sound channel switch compensating module and the Balanced Audio passage switches compensating module for field programmable gate array (FPGA) chip being the switching channel selection circuit that core makes up.
Use the select command of the keypad of keyboard or remote controller, show the channel number of corresponding selection on the charactron of display screen and remote controller to singlechip controller incoming video signal passage, audio signal passage and balance audio signal channel.Singlechip controller produces the switching channel order, send to the control command receiver module of passage switching part by the control command sending module, video channel switching compensating module is sent in the switching channel order that the channel selecting controller receives the control command receiver module respectively, sound channel switches compensating module and the balance voice-grade channel switches compensating module, and control selects certain channel video signal, audio signal passage and balance audio signal channel to switch to the output port of correspondence.
Described video signal input terminal mouth can be connected anolog TV signals or digital television signal or VGA signal etc. with the audio signal input port, can connect various video display stereo sets.
The foregoing description is the specific case that the purpose of this utility model, technical scheme and beneficial effect are further described only, and the utility model is not to be defined in this.All any modifications of within scope of disclosure of the present utility model, being made, be equal to replacement, improvement etc., all be included within the protection range of the present utility model.
Claims (6)
1. multichannel audio-video frequency signal switching apparatus comprises the input port of multi-channel video signal, audio signal and balance audio signal, and switching device shifter is characterized in that:
Also comprise the control section that contains singlechip controller and keyboard that is attached thereto and control command sending module, switching part comprises the input port of 2～50 tunnel vision signals, the input port of the input port of 2～50 tunnel audio signals and 2～50 road Balanced Audio signals, connect 2～50 corresponding vision signal anti-interference process modules respectively, 2～50 audio signal anti-interference process modules and 2～50 Balanced Audio signal anti-interference process modules, each vision signal anti-interference process module insert video channel and switch compensating module, each audio signal anti-interference process module inserts sound channel and switches compensating module, each Balanced Audio signal anti-interference process module inserts the Balanced Audio passage and switches compensating module; Video channel is switched compensating module and is connect VT mouth, sound channel and switch that compensating module connects the audio signal output port, the Balanced Audio passage switches compensating module and connects the Balanced Audio signal output port; Switching part also has control command receiver module and channel selecting controller; Control command receiver module interface channel selection control, channel selecting controller connect video channel and switch compensating module, sound channel switching compensating module and balance voice-grade channel switching compensating module; The control command sending module of control section connects the control command receiver module of switching part.
2. multichannel audio-video frequency signal switching apparatus according to claim 1 is characterized in that:
Described video channel is switched compensating module, sound channel switches compensating module and the Balanced Audio passage switches the switching channel selection circuit that compensating module is the field programmable gate array chip structure.
3. multichannel audio-video frequency signal switching apparatus according to claim 1 and 2 is characterized in that:
Described singlechip controller also is connected to display unit, and display unit is charactron or LCDs.
4. multichannel audio-video frequency signal switching apparatus according to claim 1 and 2 is characterized in that:
Described singlechip controller also is connected to wireless receiving module, is furnished with Digiplex; Digiplex comprises microcontroller and the keypad that is attached thereto, display and wireless transmitter module.
5. multichannel audio-video frequency signal switching apparatus according to claim 1 and 2 is characterized in that:
Described singlechip controller is connected to time block, and time block links to each other with the power circuit of equipment.
6. multichannel audio-video frequency signal switching apparatus according to claim 1 and 2 is characterized in that:
Described video signal input terminal mouth is connected anolog TV signals or digital television signal or VGA signal with the audio signal input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206833016U CN201893863U (en) | 2010-12-27 | 2010-12-27 | Multipath audio-video signal switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206833016U CN201893863U (en) | 2010-12-27 | 2010-12-27 | Multipath audio-video signal switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893863U true CN201893863U (en) | 2011-07-06 |
Family
ID=44223332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206833016U Expired - Fee Related CN201893863U (en) | 2010-12-27 | 2010-12-27 | Multipath audio-video signal switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893863U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701551A (en) * | 2013-12-17 | 2014-04-02 | 深圳市东微智能科技有限公司 | Multichannel digital sound console and signal processing method thereof |
| CN109905750A (en) * | 2017-12-07 | 2019-06-18 | 宏正自动科技股份有限公司 | Video streaming method for synchronously switching in Video Wall Display System |
| CN111009106A (en) * | 2018-10-05 | 2020-04-14 | 财团法人工业技术研究院 | Human-computer interface system and communication control device thereof |
-
2010
- 2010-12-27 CN CN2010206833016U patent/CN201893863U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701551A (en) * | 2013-12-17 | 2014-04-02 | 深圳市东微智能科技有限公司 | Multichannel digital sound console and signal processing method thereof |
| CN109905750A (en) * | 2017-12-07 | 2019-06-18 | 宏正自动科技股份有限公司 | Video streaming method for synchronously switching in Video Wall Display System |
| CN111009106A (en) * | 2018-10-05 | 2020-04-14 | 财团法人工业技术研究院 | Human-computer interface system and communication control device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204316626U (en) | HDMI audio frequency and video switching device shifter can be extended | |
| CN102970633A (en) | Device control apparatus, device control method, and program | |
| CN201893863U (en) | Multipath audio-video signal switching device | |
| CN202309903U (en) | HDMI signal switching device | |
| CN1898957B (en) | Using multiple communication links in conjunction with a media adapter | |
| CN201039353Y (en) | Selection recognition circuit for multi-channel signal source interface | |
| CN201846449U (en) | Large-screen IP (internet protocol) video stream access device | |
| CN205123925U (en) | Many pictures spectral analysis monitored control system | |
| CN101951507A (en) | Large screen IP (Internet Protocol) video stream access equipment and implementation method thereof | |
| CN101296043A (en) | Addressable educational broadcast system | |
| CN103905768B (en) | Video input and the method for component input interface multiplexing in a kind of television receiver | |
| CN206313937U (en) | A kind of extremely clear 4K60HZ audios separators of HDMI | |
| CN201919103U (en) | Interface device with many-way selection output | |
| CN203813907U (en) | Intelligent central control equipment capable of inputting/outputting multichannel audio and video | |
| CN205081902U (en) | Multichannel numeral home theater system of decoding | |
| CN203870973U (en) | Integrated intelligent high efficiency digital multimedia playing system | |
| CN210183436U (en) | HDMI audio separator | |
| CN204578645U (en) | A kind of multichannel audio-video frequency switched system | |
| CN202103776U (en) | Multi-input and single-output high-definition multimedia interface (HDMI) adaptive device and system | |
| CN202652432U (en) | Multi-output digital set top box | |
| CN201674467U (en) | Power amplifier device | |
| CN201937750U (en) | Audio channel switching circuit of digital television all-in-one machine and digital television all-in-one machine | |
| CN105355222A (en) | Audio playing control method and multi-audio system splicing equipment | |
| CN102566745B (en) | Mobile terminal and state switching method for mobile terminal | |
| CN202231794U (en) | HDMI converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20121227 |