CN209659302U - A kind of interface gating circuit and communication equipment - Google Patents
A kind of interface gating circuit and communication equipment Download PDFInfo
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- CN209659302U CN209659302U CN201920305471.1U CN201920305471U CN209659302U CN 209659302 U CN209659302 U CN 209659302U CN 201920305471 U CN201920305471 U CN 201920305471U CN 209659302 U CN209659302 U CN 209659302U
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Abstract
The utility model discloses a kind of interface gating circuits, comprising: at least two external interfaces, the signal selector of input signal for choosing one of external interface from least two external interfaces, the interface detection circuit of plug state for detecting at least one external interface and the main control module of the work for controlling signal selector according to the testing result of interface detection circuit；At least one external interface is connect with the input terminal of interface detection circuit, the interface detection signal input part connection of the output end and main control module of interface detection circuit, at least two external interfaces are also connect with the signal input part of signal selector, the signal output end of signal selector and the interface signal input terminal of main control module connect, and the controlled end of signal selector and the control terminal of main control module connect.The invention also discloses a kind of communication equipment, efficiently solve the problems, such as communication equipment application scenarios it is single, using inflexible.
Description
Technical field
The utility model relates to interfacing field more particularly to a kind of interface gating circuits and communication equipment.
Background technique
Currently, some communication equipments (such as managed switches) are general only with an external interface (such as Console
Mouthful) be communicatively coupled with external equipment (such as PC), it cannot be communicatively coupled with multiple external equipments, in this way
So that the application scenarios of communication equipment are single, use is inflexible for meeting.
Summary of the invention
The purpose of the utility model embodiment is to provide a kind of interface gating circuit and communication equipment, effectively solves communication and sets
It is standby that application scenarios are single, use inflexible problem.
To achieve the above object, an embodiment of the present invention provides a kind of interface gating circuit, comprising: at least two
The signal of external interface, input signal for choosing one of them external interface from least two external interfaces
Selector, the interface detection circuit of plug state for detecting at least one external interface and for according to the interface
The testing result of detection circuit controls the main control module of the work of the signal selector；
At least one described external interface is connect with the input terminal of the interface detection circuit, the interface detection circuit
Output end is connect with the interface of main control module detection signal input part；At least two external interfaces and the signal select
Select the signal input part connection of device, the interface signal input terminal of the signal output end of the signal selector and the main control module
Connection, the controlled end of the signal selector are connect with the control terminal of the main control module.
Compared with prior art, the interface gating circuit disclosed in the utility model embodiment, by allowing at least one
External interface is connect with the input terminal of the interface detection circuit, and the output end of interface detection circuit and the interface of main control module are examined
Signal input part connection is surveyed, at least two external interfaces are also connect with the signal input part of the signal selector, signal behavior
The signal output end of device and the interface signal input terminal of main control module connect, the control of the controlled end and main control module of signal selector
End connection processed.In this way, communication equipment just has at least two external interfaces to can be used for being communicatively coupled with external equipment, wherein
When the main control module judges have external equipment and the external interface to connect according to the testing result of the interface detection circuit
When connecing, the main control module then can control input letter of the signal selector selection external equipment in the external interface
Number, to set up communication connection with external equipment.It can be seen that the utility model embodiment can with multiple external equipments into
Row communication connection, thus solve the problems, such as communication equipment application scenarios it is single, using inflexible.
Further, at least two external interfaces are connect with the signal output end of the main control module.
Further, the main control module is also used to suitable according to the signal input priority of at least two external interfaces
Sequence controls the work of the signal selector.
Further, the quantity of the external interface is two, respectively the first external interface and the second external interface；
The signal input priority of first external interface is higher than the signal input priority of second external interface.
Further, the quantity for the external interface connecting with the input terminal of the interface detection circuit is one,
For first external interface.
Further, the interface detection circuit includes: first resistor, second resistance；
The energization pins of first external interface are connect with the first end of the first resistor, and the of the first resistor
Two ends are connect with the first end of the second resistance, the grounding lead of the second end of the second resistance and first external interface
Foot connection, the main control module interface detection signal input part be connected to the first resistor second end and it is described second electricity
Between the first end of resistance.
Further, the interface detection circuit further include: diode, first capacitor and the second capacitor；
The anode of the diode is connect with the energization pins of first external interface, the cathode of the diode and institute
State the first end connection of first resistor；
The power supply that the first end of the first capacitor is connected to the anode and first external interface of the diode is drawn
Between foot, the second end of the first capacitor is connect with the grounding pin of first external interface；
Second capacitor is in parallel with the second resistance.
Further, the signal selector are as follows: alternative gate；
First external interface and second external interface connect with the signal input part of the alternative gate
It connects, the signal output end of the alternative gate is connect with the interface signal input terminal of the main control module, the alternative
The controlled end of gate is connect with the control terminal of the main control module.
Or, the signal selector includes: phase inverter, the first buffer and the second buffer；
The input terminal of the phase inverter is connect with the control terminal of the main control module, the output end of the phase inverter with it is described
The enable end of first buffer connects, and the input terminal of first buffer is connect with first external interface, and described first
The output end of buffer is connect with the interface signal input terminal of the main control module；
The enable end of second buffer is connect with the control terminal of the main control module, second external interface and
The input terminal of two buffers connects, and the output end of second buffer connects with the interface signal input terminal of the main control module
It connects.
Further, the external interface is Console interface.
Another embodiment of the utility model additionally provides a kind of communication equipment, including the interface gating circuit.
Compared with prior art, the communication equipment disclosed by the utility model, due to using above-mentioned interface gating electricity
Road allows communication equipment to set up communication connection with multiple external equipments, and can be adapted to more application scenarios is made
With.To solve the problems, such as communication equipment application scenarios it is single, using inflexible.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for interface gating circuit that an embodiment of the present invention provides；
Fig. 2 is a kind of structural schematic diagram of the detection circuit for interface gating circuit that an embodiment of the present invention provides；
Fig. 3 is a kind of structural representation of the signal selector for interface gating circuit that an embodiment of the present invention provides
Figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It is a kind of structural schematic diagram for interface gating circuit that the utility model embodiment 1 provides referring to Fig. 1.It is described to connect
Mouthful gating circuit, comprising: at least two external interfaces, for being chosen from least two external interfaces described in one of them
The interface of the signal selector 4 of the input signal of external interface, plug state for detecting at least one external interface
The master control of detection circuit 3 and the work for controlling the signal selector 4 according to the testing result of the interface detection circuit 3
Module 5.
At least one described external interface is connect with the input terminal of the interface detection circuit 3, the interface detection circuit 3
The interface detection signal input part GPIO1 of output end and the main control module 5 connect, at least two external interfaces and institute
State the signal input part connection of signal selector 4, the signal output end of the signal selector 4 and connecing for the main control module 5
Mouth signal input part RX connection, the controlled end of the signal selector 4 are connect with the control terminal GPIO2 of the main control module 5.
Specifically, when the interface gating circuit is applied to communication equipment, then the external interface is preferably
Console interface.Certainly, the external interface can also be USB interface or HDMI interface etc., be not specifically limited herein.This
Outside, when the main control module 5 is mainly a main control chip, then the interface of the main control module 5 detects signal input part
GPIO1 and control terminal GPIO2 can be the corresponding chip pin of the main control chip.
The working principle of the utility model embodiment one are as follows:
By allowing at least one external interface and the input terminal of the interface detection circuit 3 to connect, interface detection circuit 3
Output end is connect with the interface of main control module 5 detection signal input part GPIO1, and at least two external interfaces are also selected with the signal
The signal input part connection of device 4 is selected, the signal output end of signal selector 4 is connect with the interface signal input terminal of main control module 5,
The controlled end of signal selector 4 is connect with the control terminal GPIO2 of main control module 5.In this way, communication equipment just has at least two pairs
External tapping can be used for being communicatively coupled with external equipment (such as PC or tablet computer etc.), wherein when the master control
It is described when module 5 is judged to have external equipment to connect with the external interface according to the testing result of the interface detection circuit 3
Main control module 4 then can control the signal selector 4 and select input signal of the external equipment in the external interface, thus
Communication connection is set up with external equipment.It can be seen that the utility model embodiment can be communicated with multiple external equipments
Connection, thus solve the problems, such as communication equipment application scenarios it is single, using inflexible.
Further, at least two external interfaces are connect with the signal output end TX of the main control module 5.This
Signal can be sent to the external equipment that at least two external interfaces are connected from output end TX, made by sample, main control module 5
It obtains multiple external equipments and main control module preferably establishes communication connection, to further solve communication equipment application scenarios list
One, using inflexible problem.
In any of the above-described embodiment, it is preferable that the main control module is also used to according at least two external interfaces
Signal input priority sequential control described in signal selector work.In this way, when have at least two pairs of external equipments at least
Two external interfaces connect one to one and to corresponding external interface input signal when, main control module 5 can be according to extremely
The work of signal selector 4 described in the signal input priority sequential control of few two external interfaces, so that signal behavior
The input signal of the high external interface of 4 selection signal input priority of device, so that the interface gating circuit may be implemented
The operating mode of synchronization single input signal.Specifically, in the present embodiment, the communication input and signal of main control module 5
Output end TX is the same communication interface.
In any of the above-described embodiment, further, the quantity of the external interface is two, and respectively first pair external
Mouth 1 and the second external interface 2；Wherein, first external interface 1 is connect with the input terminal of the interface detection circuit 3.It is right
The quantity of external tapping can also be three, it is not limited here.
Preferably, the signal input priority of first external interface 1 is defeated higher than the signal of second external interface 2
Enter priority.
Specifically, external interface is two in the present embodiment, the first external interface 1 and the interface detection circuit 3
Input terminal connection, the first external interface 1 and the second external interface 2 with the signal output end TX of main control module 5.
Referring to fig. 2, further, the interface detection circuit 3 includes: first resistor R1, second resistance R2；
The energization pins of first external interface 1 are connect with the first end of the first resistor R1, the first resistor
The second end of R1 is connect with the first end of the second resistance R2, the second end of the second resistance R2 and described first pair it is external
The interface detection signal input part GPIO1 of the grounding pin connection of mouth 1, the main control module 5 is connected to the first resistor R1
Second end and the second resistance R2 first end between.
It should be noted that when the first external interface 1 access external equipment when, the energization pins of the first external interface 1 with
The first end of the first resistor R1 connects, and electric current flows through first resistor R1 and flows to second resistance R2 and main control module 5 respectively
Interface detect signal input part GPIO1, then main control module 5 determine the first external interface 1 be connected to external equipment.
Since first resistor R1 connects with second resistance R2, the first external interface 1 is determined by the way of electric resistance partial pressure
Whether external equipment is connected to, when the first external interface 1 is connected to external equipment, the interface detection signal input of main control module 5
Hold GPIO1 input high level；When first external interface 1 is not attached to external equipment, the interface detection signal input of main control module 5
Hold GPIO1 input low level.
Further, the interface detection circuit 3 further include: diode D1, first capacitor C1 and the second capacitor C2.
The anode of the diode D1 is connect with the energization pins of first external interface 1, and the diode D1's is negative
Pole is connect with the first end of the first resistor R1.
The first end of the first capacitor C1 is connected to the anode and first external interface 1 of the diode D1
Between energization pins, the second end of the first capacitor C1 is connect with the grounding pin of first external interface 1；Described second
Capacitor C2 is in parallel with the second resistance R2.
It should be noted that electric current flows through diode D1 when the first external interface 1 connects external equipment, diode is utilized
Reversed cut-off characteristics prevents external interface 1 from powering to external equipment, only external equipment is allowed to power to external interface 1；And the
One capacitor C1 and the second capacitor C2 play the role of filtering in circuit, to stabilize first resistor R1 and second resistance R2
On voltage so that interface detection circuit 3 can to 5 input high level of main control module so that main control module 5 determine
It is inserted with external equipment on first external interface 1, so that signal selector 4 selects the signal of the first external interface 1 input, so that logical
Letter equipment can be connect with multiple external equipments, to solve, communication equipment application scenarios are single, are asked using inflexible
Topic.
Further, as one of preferred embodiment of the signal selector, the signal selector 4 are as follows: two choosings
One gate, the signal input part of first external interface 1 and second external interface 2 with the alternative gate
Connection, the signal output end of the alternative gate are connect with the interface signal input terminal RX of the main control module 5, and described two
The controlled end of a gate and the control terminal GPIO2 of the main control module 5 is selected to connect.Signal selector 4 is the gating of alternative
Device, gate are specifically as follows the 74HC257D etc. for having SN74CBT3257C, NXP of TI, do not do specific restriction herein.
It should be noted that when the first external interface 1 and the second external interface 2 are connected to external equipment, due to
First external interface 1 is connected with interface detection circuit 3, and interface detects signal input part GPIO1 and inputted by interface detection circuit 3
High level, thus main control module 5 determine the first external interface 1 be connected to external equipment, since the input of the first external interface 1 is excellent
First grade is higher than the second external interface 2, at this point, main control module 5, which controls gate by control terminal GPIO2, gates the first external interface
1 input signal；When the first external interface 1 is not connected with external equipment, interface detects signal input part GPIO1 and is examined by interface
The low level that slowdown monitoring circuit 3 inputs, so that main control module 5 determines that the first external interface 1 is not connected to external equipment, at this point, master control
Module 5 controls the input signal that gate gates the second external interface 2 by control terminal GPIO2.Alternative gate is in master control
The signal of external equipment is selected under the control of module 5, is communicated to connect to be established with external equipment, so that communication equipment
Can be connect with multiple external equipments, thus solve the problems, such as communication equipment application scenarios it is single, using inflexible.
As another preferred scheme, referring to Fig. 3, the signal selector 4 includes: phase inverter 53, the first buffer 51
Second buffer 52；Specifically, in the present embodiment phase inverter 53 be 74LVC1G04, buffer 74LVC1G125, herein not
Do specific restriction.
The input terminal A3 of the phase inverter 53 is connect with the control terminal GPIO2 of the main control module 5, the phase inverter 53
Output end Y3 is connect with the enable end OE1 of first buffer 51, the input terminal A1 of first buffer 51 and described the
The interface signal input terminal RX of the connection of one external interface 1, the output end Y1 of first buffer 51 and the main control module 5 connects
It connects.
The enable end OE2 of second buffer 52 is connect with the control terminal GPIO2 of the main control module 5, and described second
External interface 2 is connect with the input terminal A2 of the second buffer 52, the output end Y2 of second buffer 52 with the master control
The interface signal input terminal RX connection of module 5.
Specifically, in the present embodiment when the first external interface 1 and the second external interface 2 are connected to external equipment
When, since the first external interface 1 is connected with interface detection circuit 3, interface detects signal input part GPIO1 and is detected by interface
The high level that circuit 3 inputs, so that main control module 5 determines that the first external interface 1 is connected to external equipment, at this point, main control module 5 is logical
Cross the input signal that control terminal GPIO2 control phase inverter 53 gates the first external interface 1；When the first external interface 1 is not connected outer
When portion's equipment, interface detects signal input part GPIO1 and passes through the low level that interface detection circuit 3 inputs, thus main control module 5
Determine that the first external interface 1 is not connected to external equipment, at this point, main control module 5 controls the second buffer by control terminal GPIO2
52 gating the second external interfaces 2 input signal, thus with external equipment establish communicate to connect, allow communication equipment with it is more
The connection of a external equipment, thus solve the problems, such as communication equipment application scenarios it is single, using inflexible.It needs to illustrate
It is that selection signal device is not limited to the connection type in the present embodiment.
Another embodiment of the utility model additionally provides a kind of communication equipment, including the interface gating circuit.
Compared with prior art, the communication equipment disclosed by the utility model, due to using above-mentioned interface gating electricity
Road so that communication equipment can set up communication connection with multiple external equipments, can be adapted to more application scenarios carry out using,
To solve the problems, such as communication equipment application scenarios it is single, using inflexible.
Specifically, communication equipment can be managed switches, can also be other communication equipments, it is not limited here.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (10)
1. a kind of interface gating circuit characterized by comprising at least two external interfaces, for from least two it is described right
The signal selector, described right for detecting at least one of the input signal of one of them external interface is chosen in external tapping
The interface detection circuit of the plug state of external tapping and for controlling the letter according to the testing result of the interface detection circuit
The main control module of the work of number selector；
At least one described external interface is connect with the input terminal of the interface detection circuit, the output of the interface detection circuit
It holds and is connect with the interface of main control module detection signal input part；At least two external interfaces and the signal selector
Signal input part connection, the interface signal input terminal of the signal output end of the signal selector and the main control module connects
It connects, the controlled end of the signal selector is connect with the control terminal of the main control module.
2. interface gating circuit as described in claim 1, which is characterized in that at least two external interfaces with the master
Control the signal output end connection of module.
3. interface gating circuit as described in claim 1, which is characterized in that the main control module is also used to according at least two
The work of signal selector described in the signal input priority sequential control of the external interface.
4. interface gating circuit as claimed in claim 3, which is characterized in that the quantity of the external interface is two, respectively
For the first external interface and the second external interface；The signal input priority of first external interface is higher than described second pair
The signal input priority of external tapping.
5. interface gating circuit as claimed in claim 4, which is characterized in that connect with the input terminal of the interface detection circuit
The external interface quantity be one, be first external interface.
6. interface gating circuit as claimed in claim 5, which is characterized in that the interface detection circuit include: first resistor,
Second resistance；
The energization pins of first external interface are connect with the first end of the first resistor, the second end of the first resistor
It is connect with the first end of the second resistance, the grounding pin of the second end of the second resistance and first external interface connects
It connects, the interface detection signal input part of the main control module is connected to the second end and the second resistance of the first resistor
Between first end.
7. interface gating circuit as claimed in claim 6, which is characterized in that the interface detection circuit further include: diode,
First capacitor and the second capacitor；
The anode of the diode is connect with the energization pins of first external interface, the cathode of the diode and described the
The first end of one resistance connects；
The first end of the first capacitor be connected to the diode anode and the energization pins of first external interface it
Between, the second end of the first capacitor is connect with the grounding pin of first external interface；
Second capacitor is in parallel with the second resistance.
8. interface gating circuit as claimed in claim 4, which is characterized in that the signal selector are as follows: alternative gate；
First external interface and second external interface are connect with the signal input part of the alternative gate, described
The signal output end of alternative gate is connect with the interface signal input terminal of the main control module, the alternative gate
Controlled end is connect with the control terminal of the main control module；
Or, the signal selector includes: phase inverter, the first buffer and the second buffer；
The control terminal of the main control module is separately connected with the input terminal of the phase inverter and the enable end of second buffer,
The output end of the phase inverter is connect with the enable end of first buffer, first external interface and first buffering
The input terminal of device connects, and second external interface is connect with the input terminal of the second buffer, the output of first buffer
The output end of end and second buffer is connect with the interface signal input terminal of the main control module.
9. interface gating circuit as described in claim 1, which is characterized in that the external interface is Console interface.
10. a kind of communication equipment, which is characterized in that including any interface gating circuit of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305471.1U CN209659302U (en) | 2019-03-11 | 2019-03-11 | A kind of interface gating circuit and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305471.1U CN209659302U (en) | 2019-03-11 | 2019-03-11 | A kind of interface gating circuit and communication equipment |
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| CN209659302U true CN209659302U (en) | 2019-11-19 |
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| CN201920305471.1U Active CN209659302U (en) | 2019-03-11 | 2019-03-11 | A kind of interface gating circuit and communication equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111723040A (en) * | 2020-05-11 | 2020-09-29 | 百富计算机技术（深圳）有限公司 | USB interface switching device, switching method and terminal equipment |
| CN111752876A (en) * | 2020-05-26 | 2020-10-09 | 苏州浪潮智能科技有限公司 | System for interface priority arbitration |
| CN113220623A (en) * | 2021-06-07 | 2021-08-06 | 环旭(深圳)电子科创有限公司 | Electronic device sharing universal sequence bus signal and operation method thereof |
-
2019
- 2019-03-11 CN CN201920305471.1U patent/CN209659302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111723040A (en) * | 2020-05-11 | 2020-09-29 | 百富计算机技术（深圳）有限公司 | USB interface switching device, switching method and terminal equipment |
| CN111752876A (en) * | 2020-05-26 | 2020-10-09 | 苏州浪潮智能科技有限公司 | System for interface priority arbitration |
| CN113220623A (en) * | 2021-06-07 | 2021-08-06 | 环旭(深圳)电子科创有限公司 | Electronic device sharing universal sequence bus signal and operation method thereof |
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Effective date of registration: 20220617 Address after: Floor 12-17, unit 1, building 2, No. 466, Xinyu Road, high tech Zone, Chengdu, Sichuan 610000 Patentee after: Chengdu Lianzhou International Technology Co.,Ltd. Address before: 518000 the 1st and 3rd floors of the south section of building 24 and the 1st-4th floor of the north section of building 28, Shennan Road Science and Technology Park, Nanshan District, Shenzhen City, Guangdong Province Patentee before: TP-LINK TECHNOLOGIES Co.,Ltd. |
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