CN101097444A - Information source switching mechanism - Google Patents
Information source switching mechanism Download PDFInfo
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- CN101097444A CN101097444A CNA2006100614672A CN200610061467A CN101097444A CN 101097444 A CN101097444 A CN 101097444A CN A2006100614672 A CNA2006100614672 A CN A2006100614672A CN 200610061467 A CN200610061467 A CN 200610061467A CN 101097444 A CN101097444 A CN 101097444A
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Abstract
A kind of information source switching device of communication equipment includes several information source input ports, it is characterized in that: it also includes single chip, setting module and multiple-channel electronic switch, the input channel of multiple-channel electronic switch is connected with several information input ports, output channel of the multiple-channel electronic switch is connected with a output port, thereinto, the single chip controls starting and closing of channel based on connection signal of setting module, the setting module sends input channel connection signal of multiple-channel electronic switch selected to the single chip; said device includes two multiple-channel electronic switches, said two multiple-channel electronic switches are separately connected with signal in corresponding type, the invention is easy to install and maintain, operation is convenient.
Description
Technical field
The present invention relates to communication apparatus, relate in particular to a kind of information source switching mechanism.
Background technology
The digital optical display rear-projector is widely used in school's multi-media classroom, large conference room etc. in recent years, is mainly used in multimedia videoconference, teaching demonstration, problem discussion etc.The digital optical display rear-projector generally possesses the multi-information source input function, such as: composite video, rgb signal, TV signal, sound signal or the like.Classroom or meeting room generally all are provided with control desk, and all source devices are placed on control desk or the inside, dais, by signal wire source device are connected with the light display rear projector, and operation uses a teleswitch when needs switch information source.
In the prior art, when needs insert more source device, need connect tens various signal wires by control desk to the light display rear projector, cause that easily signal disturbs, cause jitterbug, feasible installation, troublesome maintenance, and, when needing to switch information source in the use, must be with telepilot facing to light display rear projector's operation, this is also very inconvenient for the operator.
Summary of the invention
The object of the present invention is to provide a kind of information source switching mechanism, when remedying the more source device of access in the prior art in the prior art, install, troublesome maintenance, the defective of inconvenient operation to overcome.
Information source switching mechanism of the present invention, comprise a plurality of information source input port, it is characterized in that: also comprise single-chip microcomputer, module and multiple-channel electronic switches are set, the input channel of multiple-channel electronic switches links to each other with a plurality of information source input port, the output channel of multiple-channel electronic switches links to each other with one road output port, wherein
Described single-chip microcomputer is controlled the passage switching of multiple-channel electronic switches according to the connection signal that module is set;
The described module that is provided with connects signal to the input channel that single-chip microcomputer sends selected multiple-channel electronic switches.
Described device comprises two multiple-channel electronic switches, and described two multiple-channel electronic switches are communicated with the signal of respective type respectively.
In described two multiple-channel electronic switches, wherein,
The information source input port that input channel connected of a multiple-channel electronic switches comprises two-way or above composite video signal of two-way and corresponding left and right sound signal, and the output port that links to each other with this multiple-channel electronic switches is exported one tunnel composite video signal and corresponding left and right sound signal;
The information source input port that input channel connected of another multiple-channel electronic switches comprises two-way or above rgb signal of two-way and corresponding computer audio frequency signal, and the output port that links to each other with this multiple-channel electronic switches is exported one road rgb signal and corresponding computer audio frequency signal.
Described single-chip microcomputer is controlled corresponding multiple-channel electronic switches set according to the connection signal that module is set, and opens passage corresponding in this multiple-channel electronic switches.
The described module that is provided with is the key groups zoarium, and this key groups zoarium transmits numeral to single-chip microcomputer and selects signal, and single-chip microcomputer is selected the corresponding input channel conducting of signal controlling multiple-channel electronic switches according to received numeral.
Described single-chip microcomputer adopts the ATMEL89C51 chip.
Described device also comprises indicating device, and described indicating device is pointed out the passage of institute's conducting, and single-chip microcomputer sends corresponding indicating signals according to the channel status of multiple-channel electronic switches to indicating device.
A plurality of pilot lamp are set in the described indicating device, and each pilot lamp is corresponding to the respective channel of multiple-channel electronic switches.
Beneficial effect of the present invention is: in the present invention, adopt single-chip microcomputer, module and multiple-channel electronic switches are set, the input channel of multiple-channel electronic switches links to each other with a plurality of information source input port, the output signal of all source devices only need be connected with information source input port, for the digital optical display rear-projector, only need be connected to output port gets final product, the quantity of the source device that inserts, not influence of connection for the digital optical display rear-projector, and, obviously the present invention in use directly places on dais or the control desk, operation setting module (as for the simple button operation in the key groups zoarium) easily is by the passage switching of Single-chip Controlling multiple-channel electronic switches, therefore, the present invention installs, safeguard simple and easy, easy to operate.
The present invention adopts two multiple-channel electronic switches to be communicated with the signal of respective type respectively, can strengthen the compatibility of the present invention for information source, further improves practicality of the present invention.Wherein one the tunnel is composite video signal and corresponding left and right sound signal, another road is rgb signal and corresponding computer audio frequency signal, like this, from the present invention to light display rear projector, only need composite video line, left and right tone frequency channel wire, RGB line and computer audio frequency line totally 5 independent signal lines, make outside the connection oversimplify.
Description of drawings
Fig. 1 is the embodiment of the invention 1 structural representation;
Fig. 2 is the embodiment of the invention 2 structural representations;
Fig. 3 is the embodiment of the invention 2 application system structural representations.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
Embodiment 1:
According to Fig. 1, the present invention includes single-chip microcomputer 2, module 3 and 3 tunnel multiple-channel electronic switches 41 are set, the input channel of multiple-channel electronic switches 41 links to each other with a plurality of information source input port 1A, 1B, 1C, and the output channel of multiple-channel electronic switches 41 links to each other output signal with one road output port 51.
As shown in Figure 1, single-chip microcomputer 2 is according to the connection signal that module 3 is set, and the passage switching of control multiple-channel electronic switches 4 is provided with module 3 and connects signal to the input channel that single-chip microcomputer 2 sends selected multiple-channel electronic switches 4.In the present invention, described single-chip microcomputer adopts the ATMEL89C51 chip, module 3 is set is the key groups zoarium, this key groups zoarium transmits numeral to single-chip microcomputer 2 and selects signal, and single-chip microcomputer 2 is selected the 4 corresponding input channel conductings of signal controlling multiple-channel electronic switches according to received numeral.
In use, the present invention is directly placed on dais or the control desk, at first, the information source output signal is connected to information source input port 1A, 1B, 1C, and output port 51 is connected to the digital optical display rear-projector, then, operation setting module 3, single-chip microcomputer 2 control multiple-channel electronic switches 41 make selected input channel conducting, for example, multiple-channel electronic switches 41 can adopt the HC157 chip, when 2 pairs of set pin wherein of single-chip microcomputer add high level, just opens passage, otherwise, closing passage.
Embodiment 2:
According to Fig. 2, the difference of present embodiment and embodiment 1 be following some:
1, present embodiment comprises that 41,42, two multiple-channel electronic switches 41,42 of two multiple-channel electronic switches are communicated with the signal of respective type respectively.
Specifically, the information source input port 1A that input channel connected, 1B, the 1C of multiple-channel electronic switches 41 comprises 3 tunnel composite video signals and corresponding left and right sound signal, output port 51 output one tunnel composite video signal and the corresponding left and right sound signals that link to each other with multiple-channel electronic switches 41.
The information source input port 1a that input channel connected, 1b, the 1c of multiple-channel electronic switches 42 comprises 3 road rgb signals and corresponding computer audio frequency signal, output port 52 output one road rgb signals and the corresponding computer audio frequency signal that link to each other with multiple-channel electronic switches 42.
2, present embodiment also is provided with indicating device 6 and links to each other with single-chip microcomputer 2, the passage of indicating device 6 prompting institutes conducting, single-chip microcomputer 2 sends corresponding indicating signals according to the channel status of multiple-channel electronic switches 4 to indicating device 6, in the present embodiment, a plurality of pilot lamp are set in the indicating device 6, and each pilot lamp is corresponding to the respective channel of multiple-channel electronic switches 4.
As shown in Figure 3, video real object exhibition booth, a DVD and the 2nd DVD are connected to information source input port 1A, 1B, 1C, and desktop computer and laptop computer are connected to information source input port 1a, 1b, and information source input port 1c is as a reserved opening.
As shown in Figure 3, the composite video signal and the corresponding left and right sound signal of output port 51 outputs, and the rgb signal of output port 52 outputs is connected to the digital optical display rear-projector by 5 independent signal lines respectively with corresponding computer audio frequency signal.
In use, operation setting module 3, single-chip microcomputer 2 is according to the connection signal that module 3 is set, control corresponding multiple-channel electronic switches 41 or 42 set, and open passage corresponding in multiple-channel electronic switches 41 or 42, simultaneously, single-chip microcomputer 2 sends corresponding indicating signals to indicating device 6, pilot lamp corresponding in the indicating device 6 is lighted, and the expression respective channel is communicated with.
Described same or similar as for present embodiment other parts structure, principle, method and embodiment 1, repeat no more herein.
Claims (8)
1, a kind of information source switching mechanism, comprise a plurality of information source input port, it is characterized in that: also comprise single-chip microcomputer, module and multiple-channel electronic switches are set, the input channel of multiple-channel electronic switches links to each other with a plurality of information source input port, the output channel of multiple-channel electronic switches links to each other with one road output port, wherein
Described single-chip microcomputer is controlled the passage switching of multiple-channel electronic switches according to the connection signal that module is set;
The described module that is provided with connects signal to the input channel that single-chip microcomputer sends selected multiple-channel electronic switches.
2, information source switching mechanism according to claim 1 is characterized in that: described device comprises two multiple-channel electronic switches, and described two multiple-channel electronic switches are communicated with the signal of respective type respectively.
3, information source switching mechanism according to claim 2 is characterized in that: in described two multiple-channel electronic switches, wherein,
The information source input port that input channel connected of a multiple-channel electronic switches comprises two-way or above composite video signal of two-way and corresponding left and right sound signal, and the output port that links to each other with this multiple-channel electronic switches is exported one tunnel composite video signal and corresponding left and right sound signal;
The information source input port that input channel connected of another multiple-channel electronic switches comprises two-way or above rgb signal of two-way and corresponding computer audio frequency signal, and the output port that links to each other with this multiple-channel electronic switches is exported one road rgb signal and corresponding computer audio frequency signal.
4, information source switching mechanism according to claim 2 is characterized in that: described single-chip microcomputer is controlled corresponding multiple-channel electronic switches set according to the connection signal that module is set, and opens passage corresponding in this multiple-channel electronic switches.
5, information source switching mechanism according to claim 1, it is characterized in that: the described module that is provided with is the key groups zoarium, this key groups zoarium transmits numeral to single-chip microcomputer and selects signal, and single-chip microcomputer is selected the corresponding input channel conducting of signal controlling multiple-channel electronic switches according to received numeral.
6, according to any described information source switching mechanism among the claim 1-5, it is characterized in that: described single-chip microcomputer adopts the ATMEL89C51 chip.
7, according to any described information source switching mechanism among the claim 1-5, it is characterized in that: described device also comprises indicating device, described indicating device is pointed out the passage of institute's conducting, and single-chip microcomputer sends corresponding indicating signals according to the channel status of multiple-channel electronic switches to indicating device.
8, information source switching mechanism according to claim 7 is characterized in that: a plurality of pilot lamp are set in the described indicating device, and each pilot lamp is corresponding to the respective channel of multiple-channel electronic switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100614672A CN101097444A (en) | 2006-06-29 | 2006-06-29 | Information source switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100614672A CN101097444A (en) | 2006-06-29 | 2006-06-29 | Information source switching mechanism |
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| CN101097444A true CN101097444A (en) | 2008-01-02 |
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| CNA2006100614672A Pending CN101097444A (en) | 2006-06-29 | 2006-06-29 | Information source switching mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045760A (en) * | 2015-06-30 | 2015-11-11 | 南阳理工学院 | Intelligent mathematical operation processing apparatus |
| CN107071656A (en) * | 2017-05-23 | 2017-08-18 | 武汉中电通信有限责任公司 | Multichannel for handling many radio signals inputs gates public address set circuit |
| CN109150298A (en) * | 2018-08-27 | 2019-01-04 | 青岛海信宽带多媒体技术有限公司 | Optical module channel status indicating means and device |
-
2006
- 2006-06-29 CN CNA2006100614672A patent/CN101097444A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045760A (en) * | 2015-06-30 | 2015-11-11 | 南阳理工学院 | Intelligent mathematical operation processing apparatus |
| CN107071656A (en) * | 2017-05-23 | 2017-08-18 | 武汉中电通信有限责任公司 | Multichannel for handling many radio signals inputs gates public address set circuit |
| CN107071656B (en) * | 2017-05-23 | 2023-04-28 | 武汉中电通信有限责任公司 | Multichannel gating loudspeaker circuit for processing multi-station signal input |
| CN109150298A (en) * | 2018-08-27 | 2019-01-04 | 青岛海信宽带多媒体技术有限公司 | Optical module channel status indicating means and device |
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