CN105653482B - Super USB controller and working method, system - Google Patents
Super USB controller and working method, system Download PDFInfo
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- CN105653482B CN105653482B CN201510991251.5A CN201510991251A CN105653482B CN 105653482 B CN105653482 B CN 105653482B CN 201510991251 A CN201510991251 A CN 201510991251A CN 105653482 B CN105653482 B CN 105653482B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The present invention relates to a kind of super USB controller and working method, system, this super USB controller includes：Several tandem type usb expansion plates, each tandem type usb expansion plate is equipped with master and slave usb bus interface and master and slave communication interface, and is connected with host computer by main usb bus interface and principal communication interface；And it is further adapted for interconnecting by master and slave usb bus interface inter-link and master and slave communication interface between each tandem type usb expansion plate, to realize data transmission and the communication connection between each tandem type usb expansion plate；And the tandem type usb expansion plate further includes：Panel, array distribution has several as the USB port from usb bus interface on the panel, and main usb bus interface, communication interface are respectively positioned on the side of tandem type usb expansion plate；The present invention can reduce manpower and equipment loss needed for swappable device repeatedly, be advantageously implemented efficient office automation, easy to operate, easy to use, maintenance cost is low.
Description
Technical field
The present invention relates to a kind of super USB controller and working method, systems.
Background technology
Current certain industries increasingly pursue efficient office automation, with several external USB equipment,
If can efficiently and accurately control each equipment, working efficiency will be greatly improved.And traditional usb expansion device
It still needs manually to switch, consumes a large amount of manpower and materials, while plugging and equipment can be caused to be lost repeatedly also, one section
Time just will update certain hardware devices.Traditional usb expansion device extends negligible amounts, and can not to each USB port into
Row control well, cannot meet the extensive extension of equipment.
Invention content
The object of the present invention is to provide a kind of USB controller and working method, systems, are opened up on a large scale to USB port
Exhibition, in order to effectively be managed USB device, improve the degree of office automation, reduction manpower workload and equipment loss at
This.
In order to solve the above technical problem, the present invention provides a kind of USB controllers, including：Several tandem type usb expansions
Plate, each tandem type usb expansion plate is equipped with master and slave usb bus interface and master and slave communication interface, and passes through main usb bus interface
And principal communication interface is connected with host computer；And it is further adapted between each tandem type usb expansion plate through corresponding master and slave usb bus
Interface inter-link and the interconnection of master and slave communication interface, to realize data transmission and the communication connection between each tandem type usb expansion plate；
And the tandem type usb expansion plate further includes：Panel, array distribution has several as from usb bus interface on the panel
USB port, and main usb bus interface, communication interface are respectively positioned on the side of tandem type usb expansion plate.
Further, the tandem type usb expansion plate includes：Several grades of expansion modules, wherein first order expansion module and
Level-one usb bus is connected, and next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And it is each
Include several expanding elements with several USB ports in grade expansion module；And it sets in first order expansion module and extends
The quantity of unit is 1, and the quantity of expanding element is X, i.e. X=2 in remaining expansion module at different levelsn, wherein n expression series, and n >=
2。
Further, the tandem type usb expansion plate further includes：Processor module, logic control circuit and the processor die
The connected communication module of block；The expanding element includes：Usb expansion chip, several ends USB picked out by the usb expansion chip
Mouthful, and usb expansion chip is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；First order USB is total
Line from first order expanding element usb expansion chip draw, be adapted to host computer or with upper level tandem type usb expansion plate
The corresponding USB port of each expanding element is connected in middle afterbody expansion module；The processor module by communication module from
Host computer obtains the incoming instruction of corresponding USB device, and is located at the ends USB by logic control circuit control according to the incoming instruction
Corresponding USB device on mouth is accessed or is closed.
Further, the processor module carries out corresponding encoded to each USB port, that is, obtains opposite with each USB port
The port coding answered；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And it will be each
Port coding, device coding are sent to the management databases of the USB in host computer by communication module and are stored；Using corresponding
When USB device, the incoming instruction is generated from USB management databases, and is sent to tandem type usb expansion by communication module
Plate, the processor close or open corresponding USB port according to incoming instruction.
Further, it is encoded for the processor module setting expansion board in each tandem type usb expansion plate, and by described logical
Letter module is sent to USB management databases and is stored；Expansion board coding is established in the USB management database, USB port is compiled
The corresponding lists of code, device coding；After several tandem type usb expansion plates interconnect and access host computer, host computer passes through correspondence
The working condition of USB device on each USB port of list query, and send USB port on or off and close instruction, make the USB port pair
The USB device answered is switched in or out.
Another aspect, the present invention also provides a kind of working methods of USB controller, wherein the USB controller includes：
Several tandem type usb expansion plates, each tandem type usb expansion plate are equipped with master and slave usb bus interface and master and slave communication interface, and
And the tandem type usb expansion plate further includes：Panel, array distribution has several as from usb bus interface on the panel
USB port, and main usb bus interface, communication interface are respectively positioned on the side of tandem type usb expansion plate；And the working method
Including：It is connected with host computer by main usb bus interface and principal communication interface；And it is also suitable between each tandem type usb expansion plate
It is interconnected in by corresponding master and slave usb bus interface inter-link and master and slave communication interface, to realize between each tandem type usb expansion plate
Data transmission and communication connection.
Further, the tandem type usb expansion plate includes：Several grades of expansion modules, wherein first order expansion module and
Level-one usb bus is connected, and next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And it is each
Include several expanding elements with several USB ports in grade expansion module；The number of expanding element in first order expansion module
Amount is 1, and the quantity of expanding element is set as X, i.e. X=2 in remaining expansion module at different levelsn, wherein n expression series, and n >=2.
Further, the tandem type usb expansion plate further includes：Processor module, logic control circuit and the processor die
The connected communication module of block；The expanding element includes：Usb expansion chip, several ends USB picked out by the usb expansion chip
Mouthful, and usb expansion chip is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；First order USB is total
Line from first order expanding element usb expansion chip draw, be adapted to host computer or with upper level tandem type usb expansion plate
The corresponding USB port of each expanding element is connected in middle afterbody expansion module；The processor module by communication module from
Host computer obtains the incoming instruction of corresponding USB device, and is located at the USB on corresponding USB port according to incoming instruction control and sets
It is standby to be accessed or closed.
Further, the processor module carries out corresponding encoded to each USB port, that is, obtains opposite with each USB port
The port coding answered；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And it will be each
Port coding, device coding are sent to the management databases of the USB in host computer by communication module and are stored；Using corresponding
When USB device, the incoming instruction is generated from USB management databases, and is sent to tandem type usb expansion by communication module
Plate, the processor close or open corresponding USB port according to incoming instruction；And in each tandem type usb expansion plate
Processor module is arranged expansion board and encodes, and is sent to USB management databases by the communication module and is stored；It is described
The corresponding lists of expansion board coding, USB port coding, device coding are established in USB management databases；As several tandem type USB
Expansion board interconnects and after access host computer, host computer inquires the working condition of USB device on each USB port by corresponding lists,
And send USB port on or off and close instruction, so that the corresponding USB device of the USB port is switched in or out.
The third aspect, the present invention also provides a kind of extensive expansion systems of the tandem type based on usb bus, including：Institute
The USB controller stated.
The invention has the advantages that each tandem type usb expansion plate is using same knot in the USB controller of the present invention
Structure has good interchangeability, can expand several USB ports, there are one fixed numbers for each USB port, can be by upper
Position machine controls corresponding USB port or USB device gating or closes；Several external equipments are disposably extended, these equipment can
It is mounted in expansion board for a long time, reduces the manpower and equipment loss needed for swappable device repeatedly, be advantageously implemented and efficiently do
Public affairs automation, easy to operate, easy to use, maintenance cost is low.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of the tandem type usb expansion plate of the present invention；
Fig. 2 is the functional block diagram of tandem type usb expansion plate of the present invention；
Fig. 3 is the specific schematic diagram of expanding element of the present invention.
In figure：Main usb bus interface 1, principal communication interface 2, USB port 3, from communication interface 4.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment 1 provides a kind of USB controller, including：Several tandem type usb expansion plates,
Each tandem type usb expansion plate is equipped with master and slave usb bus interface and master and slave communication interface, and by main usb bus interface and
Principal communication interface is connected with host computer；And it is further adapted for connecing by corresponding master and slave usb bus between each tandem type usb expansion plate
Mouth interconnection and the interconnection of master and slave communication interface, to realize data transmission and the communication connection between each tandem type usb expansion plate；With
And the tandem type usb expansion plate further includes：Panel 5, array distribution has several as from usb bus interface on the panel
USB port 3, and main usb bus interface 1, communication interface are respectively positioned on the side of tandem type usb expansion plate.
The USB port 3 acts not only as the slave usb bus interface being connected with higher level's tandem type usb expansion plate, may be used also
To connect corresponding USB peripheral.
For the ease of understanding the present embodiment 1, Fig. 1 and Fig. 2 are seen, (communication interface is for example, by using RS485 for master and slave communication interface
Interface).Specifically, main usb bus interface and master and slave communication interface are located at the side of tandem type usb expansion plate.It is described master and slave
Communication interface is suitable for drawing from communication chip.First order usb bus corresponds to main usb bus interface.USB port corresponds to total from USB
Line interface.
First order tandem type usb expansion plate (being properly termed as mother matrix) accesses host computer by main usb bus interface 1, and
Principal communication interface 2 also connects host computer；Meanwhile the first order tandem type usb expansion plate (motherboard) passes through 3 (corresponding diagram of USB port
Slave usb bus interface in 2), from the main usb bus interface, main logical in communication interface 4 and second level tandem type usb expansion plate
Believe that interface is connected；Similarly, it is sequentially connected each tandem type usb expansion version.
The power supply of the power module of each tandem type usb expansion plate can also use similar cascade mode from power supply or upper
Power traction enters, can also be by the way of independently-powered.
The tandem type usb expansion plate includes：Several grades of expansion modules, wherein first order expansion module and first order USB
Bus is connected, and next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And expanded modes at different levels
Include several expanding elements with several USB ports in block；And set the number of expanding element in first order expansion module
Amount is 1, and the quantity of expanding element is X, i.e. X=2 in remaining expansion module at different levelsn, wherein n expression series, and n >=2.
The tandem type usb expansion plate further includes：Processor module, logic control circuit are connected with the processor module
Communication module；The expanding element includes：Usb expansion chip, several USB ports picked out by the usb expansion chip, and
Usb expansion chip is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；First order usb bus from
Usb expansion chip in first order expanding element is drawn, be adapted to host computer or in upper level tandem type usb expansion plate most
The corresponding USB port of each expanding element is connected in rear stage expansion module；The processor module is by communication module from upper
Machine obtains the incoming instruction of corresponding USB device, and is located on USB port by logic control circuit control according to the incoming instruction
Corresponding USB device accessed or closed.
As a kind of optional embodiment of logic control circuit, the logic control circuit such as, but not limited to uses
I/O expansion of 38 decoders as processor module, and control the power pack of USB port.
The processor module carries out corresponding encoded to each USB port, that is, obtains port corresponding with each USB port
Coding；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And each port is compiled
Code, device coding are sent to the management databases of the USB in host computer by communication module and are stored；Use corresponding USB device
When, the incoming instruction is generated from USB management databases, and is sent to tandem type usb expansion plate, the place by communication module
Reason device closes or opens corresponding USB port according to incoming instruction.
It is encoded for the processor module setting expansion board in each tandem type usb expansion plate, and passes through the communication module
USB management databases are sent to be stored；Expansion board coding is established in the USB management database, USB port coding, is set
The corresponding lists of standby coding；After several tandem type usb expansion plates interconnect and access host computer, host computer is looked by corresponding lists
The working condition of USB device on each USB port is ask, and sends USB port on or off and closes instruction, makes the corresponding USB of the USB port
Equipment is switched in or out.
Embodiment 2
On the basis of embodiment 1, the present embodiment 2 additionally provides a kind of working method of USB controller, the USB controls
Device includes：Several tandem type usb expansion plates, each tandem type usb expansion plate are equipped with master and slave usb bus interface and master and slave communication
Interface；The working method includes：It is connected with host computer by main usb bus interface and principal communication interface；And each tandem type
It is further adapted between usb expansion plate through corresponding master and slave usb bus interface inter-link and the interconnection of master and slave communication interface, it is at different levels to realize
Data transmission between connection formula usb expansion plate and communication connection.
The tandem type usb expansion plate includes：Several grades of expansion modules, wherein
First order expansion module is connected with first order usb bus, and
Next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And
Include several expanding elements with several USB ports in expansion modules at different levels；
The quantity of expanding element is 1 in first order expansion module, and the quantity of expanding element is set in remaining expansion module at different levels
For X, i.e. X=2n, wherein n expression series, and n >=2.
The tandem type usb expansion plate further includes：Processor module, logic control circuit are connected with the processor module
Communication module；The expanding element includes：Usb expansion chip, several USB ports picked out by the usb expansion chip, and
Usb expansion chip is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；First order usb bus from
Usb expansion chip in first order expanding element is drawn, be adapted to host computer or in upper level tandem type usb expansion plate most
The corresponding USB port of each expanding element is connected in rear stage expansion module；The processor module is by communication module from upper
Machine obtains the incoming instruction of corresponding USB device, and according to incoming instruction control be located at the USB device on corresponding USB port into
Row access is closed.
The processor module carries out corresponding encoded to each USB port, that is, obtains port corresponding with each USB port
Coding；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And each port is compiled
Code, device coding are sent to the management databases of the USB in host computer by communication module and are stored；Use corresponding USB device
When, the incoming instruction is generated from USB management databases, and is sent to tandem type usb expansion plate, the place by communication module
Reason device closes or opens corresponding USB port according to incoming instruction.
Also, it is encoded for the processor module setting expansion board in each tandem type usb expansion plate, and passes through the communication
Module is sent to USB management databases and is stored；Expansion board coding is established in the USB management database, USB port is compiled
The corresponding lists of code, device coding；After several tandem type usb expansion plates interconnect and access host computer, host computer passes through correspondence
The working condition of USB device on each USB port of list query, and send USB port on or off and close instruction, make the USB port pair
The USB device answered is switched in or out.
The concrete operation step of the present invention is as follows：
1, before entire USB controller powers on, all external USB equipment can be connected on each USB port, each
USB device corresponds to a number, is stored in the USB management databases of host computer.
2, after the power is turned on, power module is expanding element, communication module and CPU module provide stable DC source；Communication
Module is resetted with CPU module, and host computer is waited for send out instruction, and acquiescence all devices all access host computer.
3, when some USB device need not access, i.e., the USB port is closed, specific practice is hair band under host computer
There is the incoming instruction (incoming instruction is that USB port closes or opens instruction) of the device coding of this USB device, it is straight with host computer
Communication module in the first order tandem type usb expansion plate connect in succession receives the incoming instruction, or by first tandem type USB
The incoming instruction is sent to sequentially connected at different levels with the first tandem type usb expansion plate by expansion board by respective communication module
Connection formula usb expansion plate.
4, the processor module setting expansion board in each tandem type usb expansion plate encodes (such as each processor module
Setting coding), host computer send incoming instruction in also include expansion board encode, processor module judge from incoming instruction be
It is no to include the number of oneself, if including, respective extension plate is controlled immediately；If not including, any reaction is not done.
5, after processor module is instructed, the number read in incoming instruction controls expansion module.The access
Instruction further includes check code, device coding and stop code composition, the reliability of instruction is enhanced, to reach the accurate control to equipment
System.
The processor module is by controlling the level height on each pin come corresponding electronics in control logic control circuit
It switches on-off, the gating of USB port power supply or closing in expanding element is controlled with this.
Present embodiment can extend several pieces to more than ten pieces expansion board in the case of usb bus signal stabilization, excellent
It is selected as 9 blocks of usb expansion plates, i.e. 1 piece of motherboard and 8 pieces of daughter boards, usb bus interface (main usb bus interface) and the motherboard of daughter board
Eight USB port (from usb bus interface) connections.USB port is finally up to 352.The present invention has good interchangeability.On
The number of all devices is stored in the form of USB manages database on the machine of position, and includes corresponding expansion board coding, it can be according to reality
Border situation is managed database, additions and deletions or modification device numbering.Upper computer software is write using C#, and compatibility is strong, operation
Stablize.Communication module is linked together using RS485 buses, can be realized data sharing and accurately be read.
Embodiment 3
On the basis of embodiment 1, the present embodiment 3 provides a kind of extensive expansion system of the tandem type based on usb bus,
Including：The USB controller, which interconnects with the host computer, and carries out USB port gating and usb data
Transmission control.
Specifically, the host computer is discussed referring to embodiment 1 or the related of embodiment 2.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (8)
1. a kind of USB controller, which is characterized in that including：Several tandem type usb expansion plates, each tandem type usb expansion plate are all provided with
There are master and slave usb bus interface and master and slave communication interface, and passes through main usb bus interface and principal communication interface and host computer phase
Even；And
It is further adapted between each tandem type usb expansion plate mutual by corresponding master and slave usb bus interface inter-link and master and slave communication interface
Connection, to realize data transmission and the communication connection between each tandem type usb expansion plate；And
The tandem type usb expansion plate further includes：Panel, array distribution has several as from usb bus interface on the panel
USB port, and main usb bus interface, communication interface are respectively positioned on the side of tandem type usb expansion plate；
The tandem type usb expansion plate includes：Several grades of expansion modules, wherein
First order expansion module is connected with first order usb bus, and
Next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And
Include several expanding elements with several USB ports in expansion modules at different levels；And
The quantity of expanding element in first order expansion module is set as 1, the quantity of expanding element is in remaining expansion module at different levels
X, i.e. X=2n, wherein n expression series, and n >=2.
2. USB controller according to claim 1, which is characterized in that
The tandem type usb expansion plate further includes：Processor module, logic control circuit, be connected with the processor module it is logical
Believe module；
The expanding element includes：Usb expansion chip, several USB ports picked out by the usb expansion chip, and usb expansion core
Piece is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；
First order usb bus is drawn from the usb expansion chip in first order expanding element, is adapted to host computer or and upper level
The corresponding USB port of each expanding element is connected in afterbody expansion module in tandem type usb expansion plate；
The processor module obtains the incoming instruction of corresponding USB device by communication module from host computer, and according to the access
Instruction is located at the corresponding USB device on USB port by logic control circuit control and is accessed or closed.
3. USB controller according to claim 2, which is characterized in that
The processor module carries out corresponding encoded to each USB port, that is, obtains port corresponding with each USB port and compile
Code；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And
Each port coding, device coding are sent to the management databases of the USB in host computer by communication module and stored；
When using corresponding USB device, the incoming instruction is generated from USB management databases, and is sent to grade by communication module
Connection formula usb expansion plate, the processor close or open corresponding USB port according to incoming instruction.
4. USB controller according to claim 3, which is characterized in that for the processor in each tandem type usb expansion plate
Module is arranged expansion board and encodes, and is sent to USB management databases by the communication module and is stored；
The corresponding lists of expansion board coding, USB port coding, device coding are established in the USB management database；
After several tandem type usb expansion plates interconnect and access host computer, host computer is inquired by corresponding lists on each USB port
The working condition of USB device, and send USB port on or off and close instruction, make the corresponding USB device access or disconnected of the USB port
It opens.
5. a kind of extensive expansion system of tandem type based on usb bus, which is characterized in that including：As claim 1-4 is any
USB controller described in.
6. a kind of working method of USB controller, which is characterized in that the super USB controller includes：
Several tandem type usb expansion plates, each tandem type usb expansion plate is equipped with master and slave usb bus interface and master and slave communication connects
Mouthful, and the tandem type usb expansion plate further includes：Panel, array distribution has several as being connect from usb bus on the panel
The USB port of mouth, and main usb bus interface, communication interface are respectively positioned on the side of tandem type usb expansion plate；And
The working method includes：It is connected with host computer by main usb bus interface and principal communication interface；And each tandem type
It is further adapted between usb expansion plate through corresponding master and slave usb bus interface inter-link and the interconnection of master and slave communication interface, it is at different levels to realize
Data transmission between connection formula usb expansion plate and communication connection；
The tandem type usb expansion plate includes：Several grades of expansion modules, wherein
First order expansion module is connected with first order usb bus, and
Next stage expansion module is connected by the usb bus of this grade with upper level expansion module；And
Include several expanding elements with several USB ports in expansion modules at different levels；
The quantity of expanding element is 1 in first order expansion module, and the quantity of expanding element is set as X in remaining expansion module at different levels,
That is X=2n, wherein n expression series, and n >=2.
7. working method according to claim 6, which is characterized in that
The tandem type usb expansion plate further includes：Processor module, logic control circuit, be connected with the processor module it is logical
Believe module；
The expanding element includes：Usb expansion chip, several USB ports picked out by the usb expansion chip, and usb expansion core
Piece is interconnected by corresponding usb bus and expanding element at the same level and higher level's expansion module；
First order usb bus is drawn from the usb expansion chip in first order expanding element, is adapted to host computer or and upper level
The corresponding USB port of each expanding element is connected in afterbody expansion module in tandem type usb expansion plate；
The processor module obtains the incoming instruction of corresponding USB device by communication module from host computer, and according to the access
The USB device that instruction control is located on corresponding USB port is accessed or is closed.
8. working method according to claim 7, which is characterized in that
The processor module carries out corresponding encoded to each USB port, that is, obtains port corresponding with each USB port and compile
Code；And the USB device of USB port institute grafting is encoded, that is, obtains relevant device coding；And
Each port coding, device coding are sent to the management databases of the USB in host computer by communication module and stored；
When using corresponding USB device, the incoming instruction is generated from USB management databases, and is sent to grade by communication module
Connection formula usb expansion plate, the processor close or open corresponding USB port according to incoming instruction；And
It encodes for the processor module setting expansion board in each tandem type usb expansion plate, and is sent by the communication module
It is stored to USB management databases；
The corresponding lists of expansion board coding, USB port coding, device coding are established in the USB management database；
After several tandem type usb expansion plates interconnect and access host computer, host computer is inquired by corresponding lists on each USB port
The working condition of USB device, and send USB port on or off and close instruction, make the corresponding USB device access or disconnected of the USB port
It opens.
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| CN201510991251.5A CN105653482B (en) | 2015-12-25 | 2015-12-25 | Super USB controller and working method, system |
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| CN106371357A (en) * | 2016-08-31 | 2017-02-01 | 中国船舶重工集团公司第七〇二研究所 | Multi-chip controller based on SoC-FPGA and large-power variable flow control device |
| CN114036093A (en) * | 2021-10-11 | 2022-02-11 | 北京小米移动软件有限公司 | Adapter sub-board |
| CN115481063A (en) * | 2022-11-04 | 2022-12-16 | 成都立思方信息技术有限公司 | Distributed high-speed signal receiving and transmitting processing system |
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| CN1632774A (en) * | 2004-04-30 | 2005-06-29 | 山东新北洋信息技术股份有限公司 | Identification method for USB interface equipment |
| CN1851681A (en) * | 2006-05-30 | 2006-10-25 | 北京飞天诚信科技有限公司 | Device and method for operating USB interface device |
| CN101794267A (en) * | 2010-03-12 | 2010-08-04 | 上海华申智能卡应用系统有限公司 | USB (Universal Serial Bus) switching device and realizing method thereof |
| CN102681481A (en) * | 2012-05-24 | 2012-09-19 | 山西联华伟业科技有限公司 | Programmable logic controller (PLC) communication method based on universal serial bus (USB) |
| CN103760790A (en) * | 2013-10-28 | 2014-04-30 | 上海勃科信息科技有限公司 | Simple and high-efficiency relay matrix plate |
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