CN212515526U - Signal transmission circuit and interactive intelligent panel - Google Patents
Signal transmission circuit and interactive intelligent panel Download PDFInfo
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- CN212515526U CN212515526U CN202020694379.1U CN202020694379U CN212515526U CN 212515526 U CN212515526 U CN 212515526U CN 202020694379 U CN202020694379 U CN 202020694379U CN 212515526 U CN212515526 U CN 212515526U
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Abstract
The utility model discloses a signal transmission circuit and mutual intelligence are dull and stereotyped, signal transmission circuit includes: the system comprises a first change-over switch, a second change-over switch, a system main chip and an inverter circuit; the first switch comprises a first enabling end and a first fixed end, the second switch comprises a second enabling end and a second fixed end, and the system main chip comprises an enabling output end used for outputting an enabling signal; the first fixed end and the second fixed end are used for being connected with the peripheral of the electronic equipment and respectively receiving a signal source of the peripheral of the electronic equipment; the enable output with first enable end is connected, the enable output still passes through inverter circuit with the second enable end is connected, prior art compares, the utility model discloses the signal channel quantity of signal transmission circuit's control has been extended, the signal transmission demand that the user switched a plurality of signal channels has been satisfied.
Description
Technical Field
The utility model belongs to the technical field of the intelligence is dull and stereotyped and specifically relates to a signal transmission circuit and mutual intelligence are dull and stereotyped.
Background
The interactive intelligent flat panel is a conference machine, integrates a computer, a projector, an electronic whiteboard, a television, an advertising machine and a sound box, has the functions of writing, commenting, synchronous interaction, multimedia, remote video conference and the like, integrates multiple technologies of high-definition display, man-machine interaction, multimedia information processing, network transmission and the like, and is commonly used in places such as government and enterprise conference rooms, media studio and educational and training institutions.
In products such as mutual intelligent tablet, owing to there are a plurality of signal channel, like built-in PC passageway, tall and erect passageway, external PC passageway etc to can make the dull and stereotyped different operating system of operation of mutual intelligence, when the dull and stereotyped different operating system of operation of mutual intelligence, the signal source of mutual intelligent tablet peripheral hardware need switch through the switching circuit and send to different operating system, but the quantity of the signal channel of current switching circuit control is limited, is difficult to satisfy the signal transmission demand that the user switched a plurality of signal channel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming and not enough, provide a signal transmission circuit and mutual intelligence flat board that can switch a plurality of signal channel in a flexible way.
In a first aspect, the present invention provides a signal transmission circuit applied to an electronic device, including: the system comprises a first change-over switch, a second change-over switch, a system main chip and an inverter circuit;
the first switch comprises a first enabling end and a first fixed end, the second switch comprises a second enabling end and a second fixed end, and the system main chip comprises an enabling output end used for outputting an enabling signal;
the first fixed end and the second fixed end are used for being connected with the peripheral of the electronic equipment and respectively receiving a signal source of the peripheral of the electronic equipment;
the enable output end is connected with the first enable end, and the enable output end is also connected with the second enable end through the phase-inverting circuit.
Optionally, the first switch further includes a first driving end, and the second switch further includes a second driving end; the system main chip comprises a driving output end;
the driving output end is connected with the first driving end and the second driving end respectively.
Optionally, the first driving end includes a first pin and a second pin, the second driving end includes a third pin and a fourth pin, and the driving output end includes a fifth pin and a sixth pin;
the fifth pin is connected with the first pin and the third pin respectively, and the sixth pin is connected with the second pin and the fourth pin respectively.
Optionally, the first switch includes at least two first switch terminals, and the second switch includes at least two second switch terminals;
the first switch switches the conduction relation between the first fixed end and the at least two first switching ends according to the signal of the first driving end;
the second switch switches the conduction relation between the second fixed end and the at least two second switching ends according to the signal of the second driving end.
Optionally, the number of the first switching ends is 4, and the number of the second switching ends is 4.
Optionally, the first switch and the second switch are overlapped on two sides of a PCB.
Optionally, the input pins of the first fixing end and the second fixing end are connected through the same via hole in the PCB.
Optionally, the inverting circuit comprises an inverter.
Optionally, the first fixed end and the second fixed end are respectively connected to at least one of the following peripherals of the electronic device:
touch frame, mouse, keyboard, camera, microphone.
In a second aspect, the utility model provides an interactive intelligence is dull and stereotyped, including the peripheral hardware and as above-mentioned arbitrary signal transmission circuit, the output port of peripheral hardware respectively with first stiff end with the second stiff end is connected.
The embodiment of the utility model provides an in the embodiment of the signal transmission circuit and mutual intelligence are dull and stereotyped, through utilizing inverter circuit to carry out the opposition to the enable signal of the enable output of system main chip, realize two change over switch's switching control, export the signal source of mutual intelligent dull and stereotyped peripheral hardware to the computer module who corresponds in, prior art compares, the utility model discloses can switch a plurality of signal channels in a flexible way, expand the signal channel quantity of signal transmission circuit's control, satisfied the signal transmission demand that the user switched a plurality of signal channels.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a signal transmission circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal transmission circuit according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a signal transmission circuit according to another embodiment of the present invention
Fig. 4 is a schematic structural diagram of an interactive smart tablet in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the mode of the present invention will be further described in detail with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Referring to fig. 1, the present invention provides a signal transmission circuit, which can be applied to electronic devices such as televisions, computers, interactive intelligent panels, etc., and the interactive intelligent panels are exemplified below.
The embodiment of the utility model provides an in signal transmission circuit includes: a first change-over switch 10, a second change-over switch 20, a system main chip 30 and an inverter circuit 40.
The first switch 10 includes a first enable terminal 11 and a first fixed terminal 12, and the second switch 20 includes a second enable terminal 21 and a second fixed terminal 22.
The first enable terminal 11 is configured to receive an external enable signal and control an operating state of the first switch 10 according to the received enable signal, and the second enable terminal 21 is configured to receive an external enable signal and control an operating state of the second switch 20 according to the received enable signal.
The first fixing end 12 and the second fixing end 22 are used for being connected with the peripheral of the interactive intelligent tablet and respectively receiving the signal source of the peripheral of the interactive intelligent tablet.
In one example, the first fixed end 12 and the second fixed end 22 are respectively connected with peripherals of at least one of the following interactive smart tablet: touch frame, mouse, keyboard, camera, microphone. In some examples, the first and second fixed ends 12 and 22 are connected to the peripheral devices through a switch chip.
The first switch 10 and the second switch 20 may be two or more switches, each of which includes a fixed end, an enable end, a driving end, and at least two switch ends, wherein each switch end is used to connect a signal source input end of a corresponding computer module. The computer module may be a computer module built in the interactive smart tablet, or may be an external computer device connected to the interactive smart tablet through an interface, and the computer module may be configured to run an operating system, such as an android system or a windows system. When the change-over switch is in a working state, the driving end receives an external driving signal to control the conduction relation between the fixed end and each change-over end.
The system main chip 30 is used as a main control chip in an interactive intelligent tablet, and generally integrates an analog decoder, a digital decoder, a demodulator, a central processing unit and an image processing unit, and may have rich peripheral interfaces. The system main chip 30 can be connected to different operating systems through channel switches.
The system main chip 30 includes an enable output terminal 31 for outputting an enable signal, the enable output terminal 31 is connected to the first enable terminal 11, and the enable output terminal 31 is further connected to the second enable terminal 21 through the inverter circuit 40.
The enable signal may be a level signal that the system main chip 30 sends when receiving a switch control command from a user.
The inverting circuit 40 is used for inverting the enable signal output by the enable output terminal 31, for example, converting a low level signal output by the enable output terminal 31 into a high level signal, or converting a high level signal output by the enable output terminal 31 into a low level signal. The inverting circuit 40 may be an inverter.
The working principle of the embodiment is as follows:
the system comprises a main chip, a first selector switch, a second selector switch, a reverse circuit, a signal source and a signal processing circuit, wherein the main chip of the system comprises an enable output end and a second enable end, the enable output end of the main chip of the system outputs an enable signal, the enable signal is directly output to the first enable end of the first selector switch and is output to the second enable end of the second selector switch after being reversed by the reverse circuit, and one of the first selector switch and the second selector switch works to conduct a signal source of an external electronic device and a computer module inside or outside the electronic device.
The utility model discloses a signal transmission circuit can switch a plurality of signal channel in a flexible way, has expanded the signal channel quantity of signal transmission circuit's control, has satisfied the signal transmission demand that the user switched a plurality of signal channel.
In an exemplary embodiment, as shown in fig. 2, the first switch 10 further includes a first driving terminal 13 and at least two first switch terminals 14, and the second switch 20 further includes a second driving terminal 23 and at least two first switch terminals 24; the system main chip includes a drive output 32.
The driving output end 32 is connected to the first driving end 13 and the second driving end 23, and the driving output end 32 is configured to output a driving signal, where the driving signal is used to control a conduction state between a fixed end of a switch and each switching end.
The first switch 10 switches the conducting relationship between the first fixed end 12 and each first switching end 14 according to the signal of the first driving end 13;
the second switch 20 switches the conducting relationship between the second fixed end 22 and each second switch end 24 according to the signal of the second driving end 23.
In one embodiment, as shown in fig. 3, the first switch 10 includes 4 first switch terminals 14, and the second switch 20 includes 4 second switch terminals 24. The first driving terminal 13 includes a first pin 131 and a second pin 132, the second driving terminal includes a third pin 231 and a fourth pin 232, and the driving output terminal 32 includes a fifth pin 321 and a sixth pin 322.
The fifth pin 321 is respectively connected to the first pin 131 and the third pin 231, and the sixth pin 322 is respectively connected to the second pin 132 and the fourth pin 232.
When the first switch 10 is in an operating state, the first switch 10 determines a conducting relationship between the first fixing terminal 12 and each first switch terminal 14 according to signals of the first pin 131 and the second pin 132.
When the first switch 20 is in an operating state, the first switch 10 determines a conducting relationship between the first fixed terminal 22 and each first switch terminal 14 according to signals of the first pin 131 and the second pin 132.
The first change-over switch and the second change-over switch control the conduction relation between the fixed end and each change-over end according to the received driving signals, and signal transmission of a plurality of signal channels is achieved.
In one example, the inverter circuit 40 includes an inverter for inverting the phase of the input signal by 180 degrees, and the inverter may be a CMOS inverter or a TTL not gate. The input end of the inverter circuit 40 is an input end of the inverter, and the output end of the inverter circuit 40 is an output end of the inverter.
In order to increase the space occupied by the first switch 10 and the second switch 20 and reduce the signal attenuation caused by the length of the tail of the trace line of the PCB, in an exemplary embodiment, the first switch and the second switch are disposed on two sides of a PCB in an overlapping manner. Preferably, the input pins of the first fixed end and the second fixed end are connected through the same via hole in the PCB, so that the PCB wiring tail of each switch is reduced to the greatest extent, and the attenuation of the signal of the interactive intelligent flat panel signal source is reduced.
In an exemplary embodiment, each of the first switch ports 14 and each of the second switch ports 24 may be configured to connect modules, such as a USB interface, an internal PC module and an android module, and an external PC module, so as to transmit a received signal of a signal source to the corresponding module.
Referring to fig. 4, the present invention further provides an interactive intelligent tablet 500, which includes a peripheral 510 and a signal transmission circuit 520 as described above, wherein an output port of the peripheral 510 is connected to the first fixed end and the second fixed end respectively.
Wherein the peripheral 510 may be a peripheral of at least one of the following interactive smart tablet: touch frame, mouse, keyboard, camera, microphone.
The embodiment of the utility model provides an in signal transmission circuit and mutual intelligence are dull and stereotyped, through the control of system main chip output drive signal and enable signal to two change over switch's signal channel, realized with mutual dull and stereotyped convenient output of signal source of peripheral hardware of intelligence to the computer module who corresponds, prior art compares, this case can switch a plurality of signal channels in a flexible way, the signal channel quantity of signal transmission circuit's control has been extended, the signal transmission demand that the user switched a plurality of signal channels has been satisfied.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (10)
1. A signal transmission circuit applied to an electronic device, comprising:
the system comprises a first change-over switch, a second change-over switch, a system main chip and an inverter circuit;
the first switch comprises a first enabling end and a first fixed end, the second switch comprises a second enabling end and a second fixed end, and the system main chip comprises an enabling output end used for outputting an enabling signal;
the first fixed end and the second fixed end are used for being connected with the peripheral of the electronic equipment and respectively receiving a signal source of the peripheral of the electronic equipment;
the enable output end is connected with the first enable end, and the enable output end is also connected with the second enable end through the phase-inverting circuit.
2. The signal transmission circuit according to claim 1, characterized in that:
the first switch also comprises a first driving end, and the second switch also comprises a second driving end; the system main chip comprises a driving output end;
the driving output end is connected with the first driving end and the second driving end respectively.
3. The signal transmission circuit according to claim 2, characterized in that:
the first driving end comprises a first pin and a second pin, the second driving end comprises a third pin and a fourth pin, and the driving output end comprises a fifth pin and a sixth pin;
the fifth pin is connected with the first pin and the third pin respectively, and the sixth pin is connected with the second pin and the fourth pin respectively.
4. The signal transmission circuit according to claim 2, characterized in that:
the first switch comprises at least two first switch ends, and the second switch comprises at least two second switch ends;
the first switch switches the conduction relation between the first fixed end and the at least two first switching ends according to the signal of the first driving end;
the second switch switches the conduction relation between the second fixed end and the at least two second switching ends according to the signal of the second driving end.
5. The signal transmission circuit of claim 4, wherein:
the number of the first switching ends is 4, and the number of the second switching ends is 4.
6. The signal transmission circuit according to claim 1, characterized in that:
the first change-over switch and the second change-over switch are overlapped on two sides of a PCB.
7. The signal transmission circuit of claim 6, wherein:
the input pins of the first fixing end and the second fixing end are connected through the same via hole in the PCB.
8. The signal transmission circuit according to claim 1, characterized in that:
the inverting circuit includes an inverter.
9. The signal transmission circuit according to claim 1, characterized in that:
the first fixed end and the second fixed end are respectively connected with at least one item of electronic equipment which comprises the following peripheral parts:
touch frame, mouse, keyboard, camera, microphone.
10. The utility model provides an interactive intelligence is dull and stereotyped which characterized in that:
comprising a peripheral and a signal transmission circuit as claimed in any one of claims 1 to 9, output ports of the peripheral being connected to the first and second fixed ends, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694379.1U CN212515526U (en) | 2020-04-28 | 2020-04-28 | Signal transmission circuit and interactive intelligent panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694379.1U CN212515526U (en) | 2020-04-28 | 2020-04-28 | Signal transmission circuit and interactive intelligent panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212515526U true CN212515526U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020694379.1U Active CN212515526U (en) | 2020-04-28 | 2020-04-28 | Signal transmission circuit and interactive intelligent panel |
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|---|---|
| CN (1) | CN212515526U (en) |
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- 2020-04-28 CN CN202020694379.1U patent/CN212515526U/en active Active
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