CN112463661A - USB device management system and management method - Google Patents
USB device management system and management method Download PDFInfo
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- CN112463661A CN112463661A CN202011466679.5A CN202011466679A CN112463661A CN 112463661 A CN112463661 A CN 112463661A CN 202011466679 A CN202011466679 A CN 202011466679A CN 112463661 A CN112463661 A CN 112463661A
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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
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
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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
- G06F13/14—Handling requests for interconnection or transfer
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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
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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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention discloses a USB device management system and a management method, which comprises the following steps: firstly, a server unit sends an available USB device list to a client unit, and a user selects one USB device through the client unit and sends a connection request to the server unit; secondly, after receiving the connection request, the server unit sends the connection request to the USB equipment terminal unit, and the USB equipment terminal unit returns the information of the corresponding USB equipment to the client unit through the server unit; and thirdly, the client unit initiates a request to the USB equipment terminal unit through the server unit according to the returned equipment information, the USB data stream read by the control module is converted into a network packet and returned to the client unit, the client unit analyzes the data packet into the data stream and verifies the data stream, a virtual link is formed between the client unit and the USB equipment terminal unit, and the client unit is connected with the USB equipment. By virtualizing the USB device to the remote device, the connection is faster.
Description
Technical Field
The invention belongs to the field of data transmission, and particularly relates to a USB device management system and a management method.
Background
Universal Serial Bus (USB) is an emerging data communication method that gradually replaces other interface standards, and was established by Intel, Compaq, Digital, IBM, Microsoft, NEC, and Northern Telecom, which were incorporated by computer and communication companies in 1995, and gradually forms an industry standard. As a high-speed serial bus, the USB bus has extremely high transmission speed which can meet the application environment requirement of high-speed data transmission, and has the advantages of simple power supply (bus power supply), convenient installation and configuration (supporting plug and play and hot plug), simple expansion port (127 peripheral devices can be expanded at most through a concentrator), diversified transmission modes (4 transmission modes), good compatibility (downward compatibility after product upgrading) and the like.
Since the introduction of Universal Serial Bus (USB), it has been successfully used as a substitute for serial and parallel ports, and has become one of the standard expansion interfaces and essential interfaces for computers and intelligent devices in the 21 st century, and it has now developed into USB version 4.0. The USB has the advantages of high transmission speed, convenience in use, support for hot plug, flexibility in connection, independent power supply and the like, can be connected with various peripherals such as a keyboard, a mouse, a large-capacity storage device and the like, and the interface is also widely used in smart phones. The interaction between the intelligent devices such as the computer and the external data is mainly based on a network and a USB interface.
The USB interface is widely accepted due to its features of general use, high speed, hot plug, etc., and various devices that perform communication interface through USB are in the mainstream. The USB interface is adopted by electronic products such as printers, scanners and the like, and USB interfaces are adopted by electronic products such as USB disks, smart phones and the like. The adoption of a large number of USB interfaces also brings about a management problem, the USB interfaces can only be directly inserted into a computer or a HUB, and a user needs to be plugged into another computer again each time of replacement, so that the use method and the efficiency of the USB equipment are greatly limited, and the safety is greatly threatened on the basis of no authority control. Especially, the number of USB interfaces of a thin and light notebook computer is limited, and the extension device is inconvenient to carry, so that a user can manage the USB device through a network means, which brings great convenience. In addition, the USB devices uniformly managed by companies are usually managed by applying and borrowing, and this old and inefficient method is not suitable for the current fast-paced working mode and is severely limited by regions.
The existing USB centralized management equipment on the market can perform networked management on the USB equipment, and can realize that a user uses a client to connect equipment on a USB server through a network. However, the system only supports access through a local area network at present, and a single node has the limitation of the maximum number of devices, only a single USB device corresponds to a single remote client, and a cluster cannot be formed. If the user needs to connect with the equipment of another branch company, a complex VPN network needs to be built, and the user can access the network only by remotely connecting to the intranet of the company, which undoubtedly increases the use threshold of the user and the operation and maintenance cost of the company; in addition, the management methods on the market at present have no authority control system, different devices of different users cannot be isolated, confidential devices of some companies cannot be used, and unforeseeable risks are generated to enterprises if the enterprises are exposed to the external network.
Disclosure of Invention
The invention aims to provide a USB device management system and a management method, which aim to solve the problems that various USB devices cannot be effectively managed, the USB devices in different departments and different regions cannot be effectively scheduled, the use permission of the USB devices cannot be effectively controlled, and the use condition of the USB devices cannot be conveniently inquired.
The purpose of the invention is realized by the following technical means, and the USB device management system comprises
The server unit is used for storing the USB equipment information collected by the USB equipment terminal unit and is connected and communicated with the USB equipment terminal unit and the client unit;
a USB device terminal unit for plugging USB device and obtaining the information of the plugged USB device,
and the client unit is used for receiving the information of the server unit and sending a request to the server unit.
The USB device terminal unit includes
The first communication module is in communication connection with the server unit and used for receiving the instruction signal sent by the server unit;
the control module is used for controlling the USB equipment according to the instruction information received by the first communication module and reading the data of the USB equipment;
the execution module is controlled by the control module and is used for driving the USB equipment and detecting whether the USB equipment can normally work or not;
and the first monitoring module sends a signal to the control module when detecting that the USB device is plugged in or pulled out, and the control module reports the signal to the server unit through the first communication module, so that the state of the device is updated.
The server unit comprises
The memory module is used for storing USB equipment information, client basic information and equipment use information;
the second monitoring module judges the USB equipment state on the USB equipment terminal/the USB equipment terminal according to the USB equipment running data reported by the first monitoring module on the USB equipment terminal unit;
the server unit also comprises a data analysis module which is used for summarizing the information in the storage unit, analyzing and obtaining a data report according to a set algorithm and providing data support for an administrator.
A USB device management method comprises the following steps:
firstly, a server unit sends an available USB device list to a client unit, and a user selects one USB device through the client unit and sends a connection request to the server unit;
secondly, after receiving the connection request, the server unit sends the connection request to the USB equipment terminal unit, and the USB equipment terminal unit returns the information corresponding to the USB equipment, including the server address, the communication port and the access certificate to the client unit through the server unit;
and thirdly, the client unit initiates a request to a first communication module of the USB equipment terminal unit through the server unit according to the equipment information returned by the server unit and carries an access certificate, after the USB equipment terminal unit checks the certificate, a USB data stream read by the control module is converted into a network packet and returned to the client unit, the client unit analyzes the data packet into the data stream and verifies the data stream, a virtual link is formed between the client unit and the USB equipment terminal unit, and the connection between the client unit and the USB equipment is completed.
Before the first step, information such as the serial number, name and type of each USB device and the real-time state of the USB device are uploaded to the server unit through the information acquisition module of the USB device terminal unit.
After the first step, the client unit sends a state check request to the server unit, the server unit checks whether the USB equipment can be used, if the USB equipment can be used, the second step is carried out, and if the USB equipment cannot be used, connection failure information is sent to the client unit so as to reselect a new USB equipment for connection.
After said third step, the client unit marks the corresponding USB device as in use.
The data analysis module records the service condition of the USB equipment and generates a service condition report for viewing.
In the first step, the server unit sends a list of available USB devices within the authority range according to the authority of the client unit for selective connection.
The invention has the beneficial effects that: 1. by virtualizing the remote USB device onto the local client unit, rather than delivering the remote USB device to the local client unit through a virtual machine, the connection is faster.
2. The information of the USB devices is uploaded to the server unit for unified management, so that the client unit can freely select which USB device is connected, and the management and use efficiency of the USB devices is improved.
3. Through the authority setting when the client unit logs in, the server unit returns an available USB equipment list in the authority range to the client unit, so that the authority control is realized, and the user can use the USB equipment across companies, regions and departments conveniently.
Detailed Description
[ example 1 ]
A USB device management system includes
The server unit is used for storing the USB equipment information collected by the USB equipment terminal unit and is connected and communicated with the USB equipment terminal unit and the client unit; storing basic information of the USB equipment and instruction codes for the USB equipment terminal unit to execute, storing user information and information of the USB equipment used by the user, summarizing and analyzing data to obtain an analysis report; monitoring the state of a USB equipment terminal unit; monitoring the state of the USB equipment; group-sending station internal message
And the USB equipment terminal units are used for plugging USB equipment and acquiring the information of the plugged USB equipment, wherein the USB equipment terminal units are controlled by the server unit in a wired or wireless mode, execute different functions and feed back the running condition of the USB equipment in real time.
And the client unit is used for receiving the information of the server unit and sending a request to the server unit. The system comprises one or more of a computer/mobile phone/tablet computer with a wireless/wired communication function, a server unit and a USB device manager, wherein the computer/mobile phone/tablet computer is used for displaying prompt information of the server unit and receiving operation information of a user or a company USB device manager sent by the server unit;
the storage module of the server unit stores information of the USB device plugged in the USB device terminal unit, such as information of USB device number, name, type, etc., for indicating the role of the USB device and distinguishing it from other USB devices. So that the user selects from the client unit the USB device connection that he wants.
The user inquires USB equipment list information from the server unit through the client unit, sends a connection request to the server unit after selecting USB connection, the server unit communicates with the USB equipment terminal unit after receiving the connection request, and returns information required by connection to the client unit, so that the client unit and the target USB equipment are virtually connected.
The USB device terminal unit includes
The first communication module is in communication connection with the server unit and used for receiving the instruction signal sent by the server unit; the USB interface is in communication connection with the server unit and is used for receiving the instruction information sent by the server unit and the running information of the real-time USB equipment; a single USB device terminal is provided with a WIFI/wired communication module, all USB device terminals in a local area are connected by using a local area network, and the USB device terminals in a large range are connected by an Internet network
The control module is used for controlling the USB equipment according to the instruction information received by the first communication module and reading the data of the USB equipment; responding to the instruction information received by the first communication module, and controlling the USB equipment; the control core of the control module is an X86/ARM chip which is mainly used for processing the received instruction information and then controlling the USB equipment to work according to the instruction information.
The execution module is controlled by the control module and is used for driving the USB equipment and detecting whether the USB equipment can normally work or not; controlled by the control module, driving the USB device to read/write data, etc.; the control core of the execution module is a USB main control chip, and the control core is mainly used for driving the USB equipment, communicating with a chip in the USB equipment and finally finishing a user instruction. The method can be used for detecting whether the USB equipment can be normally written in/read so as to detect whether the USB equipment works normally.
And the first monitoring module sends a signal to the control module when detecting that the USB device is plugged in or pulled out, and the control module reports the signal to the server unit through the first communication module, so that the state of the device is updated. The first monitoring module comprises a sensor for detecting the insertion or extraction of the USB device.
The server unit comprises
The memory module is used for storing USB equipment information, client basic information and equipment use information;
the second monitoring module judges the USB equipment state on the USB equipment terminal/the USB equipment terminal according to the USB equipment running data reported by the first monitoring module on the USB equipment terminal unit;
the server unit also comprises a data analysis module which is used for summarizing the information in the storage unit, analyzing and obtaining a data report according to a set algorithm and providing data support for an administrator.
The second monitoring module is used for receiving USB equipment operating data sent by the USB equipment terminal unit, judging the state of the USB equipment, such as pulling out, failure, idle, in-use and the like, and updating the operating state of the USB equipment in the storage module. And after the storage module updates the state, the usable USB equipment operation information is sent to the client unit, so that the client unit can select which USB equipment is connected. For example, when the execution module detects that the USB device cannot be read and written normally and fails, or the second monitoring module detects that the USB device is unplugged, the server unit removes the USB device from the available list and notifies an administrator of the processing.
And the data analysis module collects and analyzes the data to obtain a report so that a manager can know the using condition of the USB equipment according to the USB equipment using information recorded in the memory module, such as the using times and the using duration of the USB equipment, the number of users and affiliated departments and the number of connected persons.
[ example 2 ]
On the basis of embodiment 1, a USB device management method includes the following steps:
firstly, a server unit sends an available USB device list to a client unit, and a user selects one USB device through the client unit and sends a connection request to the server unit;
secondly, after receiving the connection request, the server unit sends the connection request to the USB equipment terminal unit, and the USB equipment terminal unit returns the information corresponding to the USB equipment, including the server address, the communication port and the access certificate to the client unit through the server unit;
and thirdly, the client unit initiates a request to the first communication module of the USB equipment terminal unit through the server unit according to the equipment information returned by the server unit and carries an access certificate, after the USB equipment terminal unit checks the certificate, the USB data stream read by the control module is converted into a network packet and returned to the client unit, the client unit analyzes the data packet into a data stream and verifies the data stream, a virtual link is formed between the client unit and the USB equipment terminal unit, and the connection between the client unit and the USB equipment is completed.
In the first step, after a user logs in from a client unit, the client unit actively sends a query request to a server unit, then the server unit returns available USB equipment information, and the user selects USB equipment which the user wants to connect with from the available USB equipment information and sends a connection request to the server unit.
In the second step, the server unit receives the connection request and then communicates with the USB device terminal unit, and the USB device terminal unit returns the information corresponding to the USB device, the server address, the communication port and the access certificate to the client unit through the server unit.
And in the third step, the client unit initiates a request to the first communication module of the USB equipment terminal unit through the server unit according to the equipment information returned by the server unit and carries an access certificate, after the USB equipment terminal unit checks the certificate, the USB data stream read by the control module is converted into a network packet and returned to the client unit, the client unit analyzes the data packet into a data stream and verifies the data stream, a virtual link is formed between the client unit and the USB equipment terminal unit, the client unit is connected with the USB equipment, and the client unit can remotely use the USB equipment. And only the USB equipment is virtualized to the remote client, so that the transmission is quicker. Compared with the virtual machine which only can enable a single USB device to correspond to a single remote client, only the virtual USB device realizes that a plurality of clients are connected with different USB devices.
[ example 3 ]
On the basis of embodiment 2, before the first step, information such as the number, name, type, and the like of each USB device and the real-time state of the device are also uploaded to the server unit through the information acquisition module of the USB device terminal unit. The type, model, name and position of each USB device are recorded, and the information is numbered and stored as the unique mark code of the USB device. Besides the basic information, the method also comprises information such as the real-time running state of the USB equipment.
By registering each USB device on the USB device terminal unit so as to distinguish each USB device, the client can conveniently select the required USB device connection according to the information.
After the first step, the client unit sends a state check request to the server unit, the server unit checks whether the USB equipment can be used, if the USB equipment can be used, the second step is carried out, and if the USB equipment cannot be used, connection failure information is sent to the client unit so as to reselect a new USB equipment for connection.
In actual use, a plurality of users may request the same USB device from the client unit, at this time, the client unit will first inquire the server unit about the device status and whether the device can be connected, and the background server will arrange the users according to the order of arrival of the user requests. If the device is in an idle state and not locked, a message is returned to the client that it can connect and the user is locked for a period of time during which other users cannot connect to the USB device.
If the device is being locked by another user or is being used, a message in device occupancy is returned to the client unit and the client will prompt the user that the device is being used. The set of concurrency control mechanism effectively solves the problem of key resource conflict, the connection state of the equipment is updated in real time, and the number of invalid connection errors of users is reduced
After said third step, the client unit marks the corresponding USB device as in use. I.e. locking the USB device.
The data analysis module also counts each time of device connection of the user, and the background server records the behavior no matter whether the connection is successful or not. The invention provides a data analysis function, which can analyze the use condition of users and equipment in a multi-dimensional way so that an administrator can master the use condition of the USB equipment.
The data analysis module records the service condition of the USB equipment and generates a service condition report for viewing.
In the first step, the server unit sends a list of available USB devices within the authority range according to the authority of the client unit for selective connection. The storage unit also distributes the USB devices into a plurality of levels, and the user can see the USB devices in the authority according to different authorities when logging in from the client unit.
In summary, information such as the serial number, name, type and the like of each USB device of the user company and the real-time state of the device are uploaded to the cloud or the backend server, and an administrator checks the information such as the serial number, name, type, department to which the device belongs and the real-time state information of the device in real time through the backend management interface; and dividing user account number authority, wherein different authorities can be different by USB equipment.
Providing a login interface for a user at a client unit, and after the user successfully logs in, seeing USB equipment information in an authority range according to the account authority (equipment authority control is operated by an administrator in a background);
the server unit provides real-time state information of the USB equipment in the authority range and network delay conditions from the user to each piece of equipment for the user of the client unit;
when a user selects an idle USB device and clicks connection, a client side initiates a device state checking request to a background server;
the background server unit can check the real-time state of the equipment and whether the equipment is used by other users;
if the equipment is not used by people, the background server unit locks the equipment for the client, and the client automatically initiates a request for connecting the equipment;
if the connection is successful, returning a connection success prompt to the user, and displaying a device list which the user is connecting;
if the connection fails, returning an error prompt to the user, and refreshing the equipment list;
if the equipment is used by people, returning an error prompt to the user, and refreshing an equipment list so that the user can inquire the latest equipment state;
the data analysis module of the background server unit records and summarizes the use condition of the USB equipment, and generates an equipment use condition report for a manager to check.
The administrator inserts the USB device into the USB interface of the USB device terminal unit, inputs information such as the number, name, type, organization, USB number, etc. of the device into the device management interface of the background server unit, and the server automatically records and tracks the USB device after storing.
The server unit periodically detects whether the USB device on the USB device terminal unit is working normally, shields the fault device according to the detection result and informs an administrator to process the fault device. The background server unit provides an on-site message mass-sending function so as to send temporary notifications to the user.
Claims (10)
1. A USB device management system, comprising: comprises that
The server unit is used for storing the USB equipment information collected by the USB equipment terminal unit and is connected and communicated with the USB equipment terminal unit and the client unit;
a USB device terminal unit for plugging USB device and obtaining the information of the plugged USB device,
and the client unit is used for receiving the information of the server unit and sending a request to the server unit.
2. The USB device management system according to claim 1, wherein: the USB device terminal unit includes
The first communication module is in communication connection with the server unit and used for receiving the instruction signal sent by the server unit;
the control module is used for controlling the USB equipment according to the instruction information received by the first communication module and reading the data of the USB equipment;
the execution module is controlled by the control module and is used for driving the USB equipment and detecting whether the USB equipment can normally work or not;
and the first monitoring module sends a signal to the control module when detecting that the USB device is plugged in or pulled out, and the control module reports the signal to the server unit through the first communication module, so that the state of the device is updated.
3. The USB device management system according to claim 1, wherein: the server unit comprises
The memory module is used for storing USB equipment information, client basic information and equipment use information;
and the second monitoring module is used for judging the USB equipment state on the USB equipment terminal/the USB equipment terminal according to the USB equipment running data reported by the first monitoring module on the USB equipment terminal unit.
4. The USB device management system according to claim 1, wherein: the server unit also comprises a data analysis module which is used for summarizing the information in the storage unit, analyzing and obtaining a data report according to a set algorithm and providing data support for an administrator.
5. A USB device management method is characterized by comprising the following steps:
firstly, a server unit sends an available USB device list to a client unit, and a user selects one USB device through the client unit and sends a connection request to the server unit;
secondly, after receiving the connection request, the server unit sends the connection request to the USB equipment terminal unit, and the USB equipment terminal unit returns the information corresponding to the USB equipment, including the server address, the communication port and the access certificate to the client unit through the server unit;
and thirdly, the client unit initiates a request to a first communication module of the USB equipment terminal unit through the server unit according to the equipment information returned by the server unit and carries an access certificate, after the USB equipment terminal unit checks the certificate, a USB data stream read by the control module is converted into a network packet and returned to the client unit, the client unit analyzes the data packet into the data stream and verifies the data stream, a virtual link is formed between the client unit and the USB equipment terminal unit, and the connection between the client unit and the USB equipment is completed.
6. The USB device management method according to claim 5, wherein: before the first step, information such as the serial number, name and type of each USB device and the real-time state of the USB device are uploaded to the server unit through the information acquisition module of the USB device terminal unit.
7. The USB device management method according to claim 5, wherein: after the first step, the client unit sends a state check request to the server unit, the server unit checks whether the USB equipment can be used, if the USB equipment can be used, the second step is carried out, and if the USB equipment cannot be used, connection failure information is sent to the client unit so as to reselect a new USB equipment for connection.
8. The USB device management method according to claim 5, wherein: after said third step, the client unit marks the corresponding USB device as in use.
9. The USB device management method according to claim 5, wherein: the data analysis module records the service condition of the USB equipment and generates a service condition report for viewing.
10. The USB device management method according to claim 5, wherein: in the first step, the server unit returns a list of available USB devices within the authority range according to the authority of the client unit for selective connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466679.5A CN112463661A (en) | 2020-12-14 | 2020-12-14 | USB device management system and management method |
| CN202110922108.6A CN113778918A (en) | 2020-12-14 | 2021-08-12 | USB device management system and management method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466679.5A CN112463661A (en) | 2020-12-14 | 2020-12-14 | USB device management system and management method |
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| CN112463661A true CN112463661A (en) | 2021-03-09 |
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| CN202110922108.6A Pending CN113778918A (en) | 2020-12-14 | 2021-08-12 | USB device management system and management method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113596101A (en) * | 2021-07-05 | 2021-11-02 | 锐捷网络(苏州)有限公司 | Cross-platform data transparent transmission method, system and equipment |
| CN115118736A (en) * | 2022-06-27 | 2022-09-27 | 西安万像电子科技有限公司 | Authority management method and system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114928453A (en) * | 2022-05-19 | 2022-08-19 | 芯跳科技(广州)有限公司 | USB device security verification method, system, electronic device and storage medium |
| TWI824658B (en) * | 2022-08-10 | 2023-12-01 | 威盛電子股份有限公司 | Super speed universal serial bus control method and computer system therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7761622B2 (en) * | 2007-07-26 | 2010-07-20 | Hewlett-Packard Development Company, L.P. | Centralized server rack management using USB |
| CN104866448B (en) * | 2015-06-24 | 2017-11-10 | 北京众合天下管理咨询有限公司 | The intelligent management system of extensive USB device |
| CN108897704A (en) * | 2018-06-26 | 2018-11-27 | 南通森雅商务服务有限公司 | The intelligent management system of extensive USB device |
| CN110598428B (en) * | 2019-08-22 | 2021-08-06 | 中国电子科技集团公司第二十八研究所 | USB (Universal Serial bus) equipment management and control system based on Linux user space |
| CN111930653B (en) * | 2020-07-13 | 2022-06-24 | 四川钛阁科技有限责任公司 | Remote distribution use method and device of USB (universal serial bus) equipment |
-
2020
- 2020-12-14 CN CN202011466679.5A patent/CN112463661A/en not_active Withdrawn
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2021
- 2021-08-12 CN CN202110922108.6A patent/CN113778918A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113596101A (en) * | 2021-07-05 | 2021-11-02 | 锐捷网络(苏州)有限公司 | Cross-platform data transparent transmission method, system and equipment |
| CN115118736A (en) * | 2022-06-27 | 2022-09-27 | 西安万像电子科技有限公司 | Authority management method and system |
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| CN113778918A (en) | 2021-12-10 |
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Application publication date: 20210309 |