CN207424591U - Multiple source usb circuit - Google Patents
Multiple source usb circuit Download PDFInfo
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- CN207424591U CN207424591U CN201721451319.1U CN201721451319U CN207424591U CN 207424591 U CN207424591 U CN 207424591U CN 201721451319 U CN201721451319 U CN 201721451319U CN 207424591 U CN207424591 U CN 207424591U
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Abstract
The utility model discloses a kind of multiple source usb circuits, it is related to electronic circuit technology field, by setting USB control circuit in circuit, ON-OFF control circuit and microprocessor circuit, USB control circuit is defeated for usb data and touch data to be integrated in road port upload, micro-processor interface circuit is used for according to current information source type, it exports with the current corresponding control signal of wish type to ON-OFF control circuit, ON-OFF control circuit is used to receive control signal, and usb data and touch data are transferred to by current information source according to control signal, same USB interface is applied under different information sources by final realize, it is high with USB interface utilization rate, the characteristics of cabling is beautiful inside low cost and equipment.
Description
Technical field
The utility model is related to electronic circuit technology field more particularly to a kind of multiple source usb circuits.
Background technology
More and more occur as people learn and handle official business the interactive display devices such as the needs of life, touch one-piece machine
In our actual life.
The interactive display devices such as touch one-piece machine are common teaching, meeting platform, in routine use, often need to pass through
The USB devices such as external universal serial bus (USB, Universal Serial Bus) interface connection USB flash disk, but existing touch one
The USB interface of the interactive display devices such as body machine be mostly for the input of the interactive display devices such as touch one-piece machine special source into
Row design, the interactive display devices such as touch one-piece machine are by independent wire rod by special source and the corresponding USB of special source
Interface connects, and realizes that specific information source communicates with the USB device on USB interface, and such usb circuit is designed so that each
USB interface must be connected one to one with special source using independent wire rod, could carry out completing the number of information source and USB device
According to communication, cause USB interface more but the defects of utilization rate is low, it has not been convenient to which user is operated.And user uses touch one-piece machine
The touch data generated when interactive display devices uses different wire rod and data port and letter from the data from USB device
Source communicates, and causes phenomena such as wire rod inside equipment is more, and cost increases, and cabling is untidy.
Utility model content
The main purpose of the utility model is that provide a kind of multiple source usb circuit, it is intended to solve in the prior art
Each special source of the interactive display devices such as touch one-piece machine needs to connect USB device with wire rod using independent USB interface,
USB interface does not have the versatility of multiple source, and the touch number that user is generated using touch one-piece machine when interactive display devices
It is communicated according to from the data from USB device using different wire rod and data port with information source, causes wire rod inside equipment
It is more, the technical problems such as cost increases, and cabling is untidy.
To achieve the above object, the utility model provides a kind of multiple source usb circuit, which includes：
USB control circuit, ON-OFF control circuit and microprocessor circuit；
Described USB control circuit one end is connected with USB device interface and touch apparatus interface, and the other end is controlled with the switch
Circuit on one side processed connection, the ON-OFF control circuit other end are connected with several information source interfaces, described micro-processor interface circuit one end and
On-off circuit one end connection；
The USB control circuit is used to connect USB device by the USB device interface, gathers in the USB device
Usb data and by the touch apparatus interface connect touch apparatus, gather the touch data in the touch apparatus, and
The usb data and the touch data are transmitted to the ON-OFF control circuit；
The microprocessor circuit is used to record the source type of presently described information source interface connection, and exports and the letter
The corresponding control signal of Source Type is to the ON-OFF control circuit；
The ON-OFF control circuit is used for according to the control signal from the microprocessor circuit, will be come from described
The information source for the presently described information source interface connection that the usb data and the touch data of USB control circuit are transmitted to.
The utility model provides a kind of multiple source usb circuit, by setting USB control circuit, switch in circuit
Control circuit and microprocessor circuit, USB control circuit are used to usb data and touch data being integrated in a road port
Transmission, micro-processor interface circuit are used for according to current information source type, are exported with the current corresponding control signal of wish type to switch
Control circuit, ON-OFF control circuit transmit usb data and touch data according to control signal for receiving control signal
To current information source, same USB interface is applied under different information sources by final realize, has the high and low cost of USB interface utilization rate
And equipment inside cabling it is beautiful the characteristics of.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those skilled in the art, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 is the modular structure schematic diagram for the multiple source usb circuit that the utility model embodiment provides；
Fig. 2 is the circuit theory of USB control circuit in the multiple source usb circuit that the utility model embodiment provides
Figure；
Fig. 3 is the circuit theory of ON-OFF control circuit in the multiple source usb circuit that the utility model embodiment provides
Figure.
Specific embodiment
To enable the purpose of this utility model, feature, advantage more apparent and understandable, below in conjunction with this practicality
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that institute
The embodiment of description is only the utility model part of the embodiment, and not all embodiments.Based on the reality in the utility model
Apply example, those skilled in the art's all other embodiments obtained without making creative work belong to this
The scope of utility model protection.
Referring to Fig. 1, Fig. 1 is the modular structure signal for the multiple source usb circuit that the utility model embodiment provides
Figure.
As shown in Figure 1, which includes：USB control circuit 101, ON-OFF control circuit 102 and microprocessor circuit
103。
101 one end of USB control circuit is connected with USB device interface 104 and touch apparatus interface 105, the other end and switch
102 one end of control circuit connects, and 102 other end of ON-OFF control circuit is connected with several information source interfaces, micro-processor interface circuit one end and
On-off circuit one end connects.
Wherein, USB device interface 104 is for connecting USB device, and USB device includes USB flash disk, card reader, mobile hard disk, outer
Put all devices that CD writer etc. by USB interface connected, transmitted data.
Further, the quantity of information source interface and type can be set by actual conditions demand, but information source interface
Quantity at least two, preferred information source interface type are：Android interface 106, open pluggable specification (Open
Pluggable Specification, OPS) interface 107, high-definition multimedia interface (High Definition
Multimedia Interface, HDMI) 108 and display interface (Display Port, DP) 109, for convenience of describing, at this
In utility model embodiment by taking above-mentioned information source interface type as an example.
USB control circuit 101 is used to connect USB device by USB device interface 104, gathers the USB numbers in USB device
According to and by touch apparatus interface 105 connect touch apparatus, gather touch apparatus in touch data, and by usb data with
And touch data is transmitted to ON-OFF control circuit 102.
Microprocessor circuit 103 is used to record the source type of current information source interface connection, and exports and source type pair
The control signal answered is to ON-OFF control circuit 102.
ON-OFF control circuit 102 is used for according to the control signal from microprocessor circuit 103, will come from USB control electricity
The information source for the current information source interface connection that the usb data and touch data on road 101 are transmitted to.
In the utility model embodiment, by setting USB control circuit, ON-OFF control circuit and micro- place in circuit
Device circuit is managed, USB control circuit is used to usb data and touch data being integrated in defeated, the micro-processor interface circuit of road port upload
For according to current information source type, exporting with the current corresponding control signal of wish type to ON-OFF control circuit, switch control
Usb data and touch data are transferred to current information source by circuit processed for receiving control signal according to control signal, finally
Realize and same USB interface be applied under different information sources have to walk inside the high and low cost of USB interface utilization rate and equipment
The characteristics of line is beautiful.
Referring to Fig. 2, Fig. 2 is USB control circuit in the multiple source usb circuit that the utility model embodiment provides
Circuit diagram.
USB control circuit 101 includes：USB main control chips；
If USB main control chips include uplink port and main line downlink port all the way, if in the downlink port of main line all the way
Downlink port is connected with touching interface, and the input port of the touch data as touch apparatus, other downlink ports connect with USB device
Mouth connection, as the USB device data input port of USB device, if what USB main control chips inputted for gathering main line downlink port
Data, and pass through uplink port all the way and export to ON-OFF control circuit, i.e. usb data and touch data, pass through serial transmission
Mode transmits data.
Wherein, it is so that interference is easy to control between line, and can pass through continuous improvement using the purpose of serial transmission mode
Clock frequency improves transmission rate, and the terminal of serial ports also can be smaller.
Further, USB control circuit further includes：Voltage stabilizing module；
Voltage stabilizing module is used to for 3.3V voltages power the 5V voltage conversions of uplink port input to USB main control chips.
Wherein, Voltage stabilizing module includes being arranged on the voltage regulation unit inside USB main control chips and is arranged on USB main control chips
The individual voltage regulation unit in periphery.
Further, microprocessor circuit 103 includes：Microprocessor；
Microprocessor includes several control signal outputs, and microprocessor is used to record the letter of current information source interface connection
Source Type and inquiry control signal corresponding with source type, and pass through several control signal outputs, by control signal
It exports to ON-OFF control circuit.
Wherein, the quantity of control signal output can be set according to actual conditions, for convenience of describing, in the utility model
In embodiment by taking three control signal outputs as an example, the situation of remaining quantity control signal output may be referred to three controls
Signal output part.
Further, several control signal outputs are respectively：First control signal output terminal, second control signal are defeated
Outlet and the 3rd control signal output.
Further, control signal includes several level signals；
State that there are two types of each level signals, respectively：High level and low level, when microprocessor records current information source connects
Mouthful with after the source type being connected, microprocessor output includes the control signals of several level signal combinations of states, shape
State combination represents the source type of the current information source interface connection of microprocessor records.
Wherein, the level signal quantity that control signal includes is each to control depending on the quantity of control signal output
Signal output part exports a kind of level signal, i.e., in the utility model embodiment, control signal includes three level signals, the
One control signal output exports the first level signal, second control signal output terminal output second electrical level signal, the 3rd control
Signal output part exports three level signal.
Further, each level signal is respectively there are two types of state：High level and low level, control signal pass through three
The combinations of states of dry level signal represents the source type of the current information source interface connection of microprocessor records.
Referring to Fig. 3, Fig. 3 is ON-OFF control circuit in the multiple source usb circuit that the utility model embodiment provides
Circuit diagram.
ON-OFF control circuit 102 includes：Switching chip；
Switching chip includes data input pin, several control signal inputs and several information source interfaces.
Wherein, data input pin is connected with the uplink port of USB main control chips, for receiving from USB main control chips
Usb data and touch data.
Wherein, several control signal inputs and several control signal outputs of microprocessor connect, for connecing
Receive the control signal from microprocessor.
Wherein, the quantity of control signal input is depending on the quantity of control signal output, i.e. in the utility model
The quantity of control signal input is three in embodiment.
Wherein, several information source interfaces and different information source connect, for data input pin input data and information source into
Row communication.
Wherein, the type of the type of information source and information source interface corresponds, i.e. Android interface 106 can connect Android information source,
OPS interfaces 107, which can connect OPS information sources, HDMI108, can connect HDMI information sources and DP109 connection DP information sources.
Wherein, due to the presence of HDMI108 and DP109 so that the electronic equipments such as computer by HDMI108 or
During DP109 input signals, it is not necessary to the storage devices such as USB flash disk are connected on the electronic equipments such as computer, and can be by directly connecting
Multiple source usb circuit is connect, and then is communicated with electronic equipments such as computers, it is greatly convenient for users to use.
Wherein, switch control chip is used to, according to control signal, control usb data and touch data and control signal generation
The information source interface of table is connected and communicated.
Further, ON-OFF control circuit 102 further includes：Several pull down resistor modules；
Wherein, the quantity of pull down resistor module is depending on the quantity of control signal output, i.e. real in the utility model
It applies in example, the quantity of pull down resistor module is three.
Further, three pull down resistor modules are connected with three control signal inputs of switching chip, are used for
When switch chip is initial operating state, it is low level that the level of several control signal inputs, which is drawn, makes switch control
The data input pin of circuit 102 is connected with default information source interface.Preferably, it is Android interface to preset information source interface, convenient for start
When mainboard is upgraded.
Further, ON-OFF control circuit 102 is according to the first level signal, second electrical level signal and in control signal
The height of the level of three level signal, the data input pin to control ON-OFF control circuit 102 are connected from different information source interfaces.
Specifically, when the level shape of the first level signal, second electrical level signal and three level signal in control signal
State be respectively：High level, bottom level and bottom level either high level, low level and high level or high level, height
When level and low level or high level, high level and high level, the data input pin of ON-OFF control circuit 102, which disconnects, to be connected
It connects, data input pin is not connected with any information source interface at this time.
When point of the level state of the first level signal, second electrical level signal and three level signal in control signal
It is not：When bottom level, bottom level and bottom level, the data input pin of ON-OFF control circuit 102 is connected with Android interface 106,
The circuit of Android information source access at this time.
When point of the level state of the first level signal, second electrical level signal and three level signal in control signal
It is not：When bottom level, bottom level and high level, the data input pin of ON-OFF control circuit 102 is connected with OPS interfaces 107, this
When OPS information sources access circuit.
When point of the level state of the first level signal, second electrical level signal and three level signal in control signal
It is not：When low level, high level and low level, the data input pin of ON-OFF control circuit 102 is connected with HDMI108, at this time
HDMI information sources access circuit.
When point of the level state of the first level signal, second electrical level signal and three level signal in control signal
It is not：When low level, high level and high level, the data input pin of ON-OFF control circuit 102 is connected with DP109, at this time DP
Information source accesses circuit.
Wherein, the assembled scheme of the corresponding various information source of above-mentioned level state, is not limited to above-mentioned one kind, can also there is other
Assembled scheme, but it is all similar with said combination scheme, and the utility model embodiment will not enumerate.
In several embodiments provided herein, it should be understood that disclosed circuit, it can be by others side
Formula is realized.For example, embodiments described above is only schematical, Ling Yidian is shown or discussed mutual
Coupling, direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or module, can
To be electrical, machinery or other forms.
In the above-described embodiments, all emphasize particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiments.
It is to a kind of description of multiple source usb circuit provided by the utility model, for the skill of this field above
Art personnel, based on the idea of the embodiment of the present invention, there will be changes, comprehensive in specific embodiments and applications
On, this specification content should not be construed as the limitation to the utility model.
Claims (7)
1. a kind of multiple source usb circuit, which is characterized in that the circuit includes：
USB control circuit, ON-OFF control circuit and microprocessor circuit；
Described USB control circuit one end is connected with USB device interface and touch apparatus interface, the other end and the switch control electricity
Road one end connects, and the ON-OFF control circuit other end is connected with several information source interfaces, described micro-processor interface circuit one end with it is described
On-off circuit one end connects；
The USB control circuit is used to connect USB device by the USB device interface, gathers the USB in the USB device
Data and touch apparatus is connected by the touch apparatus interface, gather the touch data in the touch apparatus, and by institute
It states usb data and the touch data is transmitted to the ON-OFF control circuit；
The microprocessor circuit is used to record the source type of presently described information source interface connection, and exports and the information source class
The corresponding control signal of type is to the ON-OFF control circuit；
The ON-OFF control circuit is used to that, according to the control signal from the microprocessor circuit, the USB will to be come from
The information source for the presently described information source interface connection that the usb data and the touch data of control circuit are transmitted to.
2. circuit according to claim 1, which is characterized in that the USB control circuit includes：USB main control chips；
If the USB main control chips include uplink port and main line downlink port all the way, if in downlink port described in main line
The downlink port is connected with the touch interface all the way, the input port of the touch data as the touch apparatus, other institutes
It states downlink port to be connected with the USB device interface, as the USB device data input port of the USB device, the USB master
If control chip is opened for gathering the data of main line downlink port input, and passing through the uplink port all the way to export to described
Close control circuit.
3. circuit according to claim 2, which is characterized in that the USB control circuit further includes：Voltage stabilizing module；
It is 3.3V voltages to the USB main control chips that the Voltage stabilizing module, which is used for the 5V voltage conversions that input the uplink port,
Power supply.
4. circuit according to claim 2, which is characterized in that the microprocessor circuit includes：Microprocessor；
The microprocessor includes several control signal outputs, and the microprocessor is used to record presently described information source interface
The source type of connection and inquiry control signal corresponding with the source type, and pass through several control signals
Output terminal exports the control signal to the ON-OFF control circuit.
5. circuit according to claim 4, which is characterized in that the control signal includes several level signals；
State that there are two types of each level signals, respectively：High level and low level, when the microprocessor records are currently believed
Source interface with after the source type being connected, microprocessor output is described comprising several level signal combinations of states
Control signal, the combinations of states represent the source type of the presently described information source interface connection of the microprocessor records.
6. circuit according to claim 5, which is characterized in that the ON-OFF control circuit includes：Switching chip；
The switching chip includes data input pin, several control signal inputs and several information source interfaces；
The data input pin is connected with the uplink port of the USB main control chips, for receiving from the USB master controls
The usb data and the touch data of chip；
Several described control signal inputs are connected with several described control signal outputs of the microprocessor, are used for
Receive the control signal from the microprocessor；
Several described information source interfaces are connected from different information sources, are carried out for the data and information source of data input pin input
Communication；
The switch control chip is used for according to the control signal, controls the usb data and the touch data and institute
The information source interface for stating control signal representative is connected and communicated.
7. circuit according to claim 6, which is characterized in that the ON-OFF control circuit further includes：Several drop-down electricity
Hinder module；
Several described pull down resistor modules are connected with several described control signal inputs of the switching chip, are used
In when the switch chip is initial operating state, the level of several control signal inputs is drawn as low level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451319.1U CN207424591U (en) | 2017-11-03 | 2017-11-03 | Multiple source usb circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451319.1U CN207424591U (en) | 2017-11-03 | 2017-11-03 | Multiple source usb circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207424591U true CN207424591U (en) | 2018-05-29 |
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ID=62307014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721451319.1U Active CN207424591U (en) | 2017-11-03 | 2017-11-03 | Multiple source usb circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207424591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608280A (en) * | 2017-11-03 | 2018-01-19 | 深圳市康冠商用科技有限公司 | Multiple source usb circuit |
-
2017
- 2017-11-03 CN CN201721451319.1U patent/CN207424591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608280A (en) * | 2017-11-03 | 2018-01-19 | 深圳市康冠商用科技有限公司 | Multiple source usb circuit |
| CN107608280B (en) * | 2017-11-03 | 2024-05-03 | 深圳市康冠商用科技有限公司 | Multi-source USB interface circuit |
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