CN115988246A - Multi-mode USB2.0 seat remote transmission switching system - Google Patents
Multi-mode USB2.0 seat remote transmission switching system Download PDFInfo
- Publication number
- CN115988246A CN115988246A CN202310148467.XA CN202310148467A CN115988246A CN 115988246 A CN115988246 A CN 115988246A CN 202310148467 A CN202310148467 A CN 202310148467A CN 115988246 A CN115988246 A CN 115988246A
- Authority
- CN
- China
- Prior art keywords
- usb
- data
- port
- switching
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention belongs to the technical field of seat remote transmission switching, and particularly relates to a multi-mode USB2.0 seat remote transmission switching system, which aims to solve the problems of low compatibility, low integration level, single interface and inconvenient maintenance when USB2.0 seat remote transmission switching and cascading in the prior art. The invention comprises the following steps: one or more USB compile-and-solve integrated switch boxes, if the system comprises a pair of the USB compile-and-solve integrated switch boxes, the system adapts to a forward transmission mode; if the system comprises the USB compiling and solving integrated switching box, the system is adapted to a local loopback mode; if the system comprises a plurality of USB compiling and solving integrated switching boxes, the system is adaptive to a multistage cascade mode. The invention has high compatibility and integration level, is suitable for various application scenes and is convenient for management and maintenance.
Description
Technical Field
The invention belongs to the technical field of seat remote transmission switching, and particularly relates to a multi-mode USB2.0 seat remote transmission switching system.
Background
The current USB transmission equipment has more types, and comprises traditional USB extension line combination equipment, USB long-distance serial UART/RS232 bus equipment, point-to-point USB protocol curing remote transmission equipment and the like. USB agent data typically has a variety of different application scenarios from input to final output: the multi-stage cascade seat transparent transmission, local loopback seat conference, seat USB remote transmission switching and the like.
Although each link has corresponding product design at present, the whole seat USB remote transmission, multi-mode switching and network IP are integrated into a portable type, and products easy to integrate are few: firstly, the compatibility of the existing USB transmission equipment for adapting to various peripherals and butting various system hosts/flat plates is general, the existing USB transmission equipment does not support the resolution and distribution of composite equipment, does not support the multilevel cascade of non-composite peripherals and the like, and most of the existing USB transmission equipment cannot be integrated with various video playing boxes to realize man-machine separation-visual seat management and control; secondly, the existing USB seat transmission mapping relationship is too single, and USB coding/USB decoding are usually independent, resulting in a large number of interfaces/cables in the system in order to meet various sudden scene requirements, the actual field wiring is cumbersome, mode switching and forward and reverse transmission are realized by repeatedly plugging and unplugging cables, and the efficiency is low/wires are easily lost.
In summary, the following problems still exist in the existing USB agent transmission: 1. the IP networking cannot be realized, long-term transmission can be realized only through physical modes such as a USB extension line or HUB cascade connection and the like, the system becomes very complicated, and certain risks and more uncontrollable factors exist when cables are mutually butted; 2. only supports the USB seat remote transmission function and has a single interface, cannot be integrated with various TX/RX video playing boxes, and cannot thoroughly realize man-machine separation-visual seat management and control; 3. the equipment has a single working mode, belongs to point-to-point transmission, has no free combination and switching function, and has limited applicability; 4. during on-site integration, the equipment cannot be dynamically switched to the coding and decoding functions, and forward and reverse switching remote transmission can be realized only by repeatedly changing external cables and replacing the equipment in engineering application, so that the complex efficiency is low in application.
Disclosure of Invention
In order to solve the above problems in the prior art, namely, the problems of low compatibility, low integration level, single interface and inconvenient maintenance when the USB2.0 seat remote transmission is switched and cascaded in the prior art, the invention provides a multi-mode USB2.0 seat remote transmission switching system, which comprises one or more USB compiling and solving integrated switching boxes;
if the system comprises a pair of USB compiling and decoding integrated switching boxes, the system is adapted to a forward transmission mode;
if the system comprises the USB compiling and solving integrated switching box, the system is adapted to a local loopback mode;
if the system comprises a plurality of USB compiling and solving integrated switching boxes, the system is adaptive to a multi-stage cascade mode.
In some preferred embodiments, the USB compiling integrated switching box includes:
the double-layer USB seat 1 comprises a USB seat KEY and a USB seat MOUSE and is used for connecting keyboard and MOUSE equipment;
the double-layer USB seat 2 comprises a USB seat 1 and a USB seat 2 which are respectively used for connecting external USB equipment;
the USB-B square port seat is used for connecting external square port USB-B equipment;
the alternative switching module comprises an alternative switch 1, an alternative switch 2, an alternative switch 3, an alternative switch 4 and an alternative switch 5 which are respectively used for switching the USB data streams between the double-layer USB seat 1 and the double-layer USB seat 2, the USB2.0 concentrator and the USB expander module;
the KM switching module is used for switching between the USB seat KEY and the USB seat MOUSE;
the USB2.0 concentrator comprises a concentrator 1 and a concentrator 2, and is respectively used for the composition of USB disk data streams of a USB seat 1 and a USB seat 2 of a double-layer USB seat 2, and the composition of keyboard and mouse data streams of a USB expander module and keyboard and mouse data of a KM switching module;
the USB expander module is used for receiving the USB equipment data stream of the double-layer USB seat 2 at the encoding side, converting the USB equipment data stream into parallel port data and transmitting the parallel port data to the FPGA processing module; the USB interface is also used for receiving the parallel port data of the FPGA processing module at the decoding side, converting the parallel port data into USB data and transmitting the USB data to the USB-B square socket through the USB2.0 concentrator;
the FPGA processing module is used for processing the data of the KM switching module, the USB expander module and the screen control panel module and converting the data into a network data stream to be butted with the network interface module;
the network interface module comprises a PHY module 1 and a PHY module 2 which are respectively used for connecting an external network;
the power supply forwarding circuit is used for supporting the POE power supply of the equipment and simultaneously performing power supply forwarding expansion when the POE is cascaded with the third-party audio and video box;
the screen control panel module is used for setting the working mode of the USB compiling and decoding integrated switching box, and setting seat switching/distribution and seat authority management and control;
and the coding/decoding switching dial is used for adjusting the USB coding and decoding integrated switching box into a USB coding box or a USB decoding box.
In some preferred embodiments, the forward transmission mode is:
by means of the encoding/decoding of the dialling codes, respectively adjusting the pair of USB coding and decoding integrated switching boxes into a USB coding box and a USB decoding box;
and after the USB coding box and the USB decoding box are electrified, data import, transmission and data output are carried out, and the seat remote transmission switching is realized.
In some preferred embodiments, the USB coding box operates as follows:
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are accessed, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 respectively;
the KM switching module analyzes data of the D0 port and the D1 port and transmits the data to the FPGA processing module through a UART port of the KM switching module;
after the data of the two peripheral USB disks are accessed, data composite packaging is carried out through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, and the data are transmitted to the one-out-of-two switch 4 and the one-out-of-two switch 5 through the U0 port of the USB2.0 concentrator and are switched and transmitted to the USB expander module;
the USB expander module converts the data of the composite packet into CLEI parallel port bus data and transmits the CLEI parallel port bus data to the FPGA processing module;
the FPGA processing module analyzes and protocols the keyboard and mouse data and the two peripheral USB flash disk data, and selects the function items through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the data are converted into RGMII data flow and transmitted to the network interface module, and the network interface module transmits the data to the switch through the kilomega power interface to realize remote transmission.
In some preferred embodiments, the USB decoding box operates as follows:
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and restored into corresponding keyboard and mouse data and two peripheral USB flash disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, transmitting the analyzed keyboard and mouse data to a KM switching module through a UART port;
the KM switching module analyzes and converts the data of the UART port and switches and transmits the data to a downstream D0 port of the USB2.0 concentrator through an upstream U0 port and the two-way switch 3; the FPGA processing module converts the analyzed data of the two peripheral USB flash disks into CLEI parallel port bus data and transmits the CLEI parallel port bus data to the USB expander module;
the USB expander module converts the CLEI parallel port bus data into two packaged peripheral USB flash disk data, and the data are switched and transmitted to a downstream D1 port of the USB2.0 concentrator through the alternative switch 5;
the USB2.0 concentrator combines the data of the D0 port and the D1 port, transmits the data to the USB-B square socket, and is connected to the host through the USB-B square socket to realize the seat remote transmission switching function.
In some preferred embodiments, if the integrated TX video box is selected, the keyboard and mouse data and the two peripheral usb flash disk data are integrated with the video network stream of each peripheral TX/RX video playing box and distributed to the network.
In some preferred embodiments, when the network interface module of the USB encoding box transmits data to the switch through the gigabit electrical port to implement remote transmission, or the USB decoding box receives the network data stream remotely transmitted by the switch through the network interface module and converts the network data stream into an RGMII data stream to transmit to the FPGA processing module, the screen control panel module performs function item selection: if the POE function and the power supply forwarding are selected to be supported and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
In some preferred embodiments, the local loopback mode is:
adjusting one USB coding and decoding integrated switching box into a USB coding box through coding/decoding dial codes;
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are accessed, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 respectively;
the KM switching module performs merging and packaging of a D0 port and a D1 port, and switches and transmits the merged packet to a downstream D0 port of the USB2.0 hub through an upstream U1 port of the KM switching module through an alternative switch 3;
after the data of the two peripheral U disks are accessed, performing data composite packaging through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, and switching and transmitting the data to a downstream D2 port of the USB2.0 concentrator through a U0 port of the USB2.0 concentrator through an alternative switch 4;
and the USB2.0 concentrator combines the data of the D0 port and the D1 port, transmits the data to the USB-B square socket, and is connected to the host/touch panel through the USB-B square socket to realize the local loopback function of the seat.
In some preferred embodiments, the multi-stage cascade mode is:
on the basis of the forward transmission mode, respectively adjusting the rest of the USB coding-decoding integrated switching boxes into USB coding boxes through coding/decoding dial codes;
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and restored into corresponding keyboard and mouse data and two peripheral USB flash disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the related data of the USB are analyzed and transmitted to the KM switching module through the UART port;
the KM switching module analyzes and separates the composite data of the UART port to obtain keyboard data and mouse data, and the keyboard data and the mouse data are separately cascaded through a plurality of alternative switches and a double-layer USB seat 1 through an upstream U0 port and an upstream U1 port to realize a multi-stage cascade function.
In some preferred embodiments, when the USB decoding box receives and converts the network data stream remotely transmitted by the switch into the RGMII data stream through the network interface module and transfers the RGMII data stream to the FPGA processing module, the screen control panel module performs function item selection: if the POE function and the power supply forwarding are selected to be supported and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
The invention has the beneficial effects that:
(1) The multi-mode USB2.0 seat remote transmission switching system has the advantages that the equipment is integrated, the device can be flexibly and adaptively switched into the coding box or the decoding box in real time through the screen control panel module and the coding/decoding switching dial-up, the maintenance and management difficulty of product integration in practical application is greatly reduced, the user experience is improved, the external cable can adapt to various working scenes without changing the dynamic switching equipment, the forward seat remote transmission, the local seat loopback and the multistage cascade function are dynamically realized, and the integration, the universality and the stability of the system are greatly improved by the technology.
(2) The multi-mode USB2.0 seat remote transmission switching system has the advantages that the USB compiling and resolving integrated switching box is small and exquisite in size and rich in interfaces, supports a keyboard, a mouse, two U disks and two RJ45 network interfaces, is convenient to integrate a third-party video box, has corresponding open control commands for different switching functions, and greatly improves integration level and efficiency.
(3) The multi-mode USB2.0 seat remote transmission switching system improves the compatibility of the system to different peripherals/systems, deals with kylin or congesting domestic system hosts (special hosts which do not support keyboard and mouse composite equipment, multistage HUB cascade bottleneck and the like), can switch modes through the work of the screen control panel module, and is high in compatibility and convenient to use in split type cascade/transparent transmission.
(4) The multi-mode USB2.0 seat remote transmission switching system can be integrated with various TX/RX video playing boxes, video network streams and KM/U disk data streams are merged and then distributed through a network, and the seat USB remote transmission function is superposed on the basis of traditional audio and video remote transmission, so that the technical design difficulty of seat remote transmission of video box manufacturers is relieved, the performance of the system is greatly improved after the system is matched with the seat USB remote transmission switching system, and man-machine separation-visual seat management and control are more thoroughly realized.
(5) The multi-mode USB2.0 seat remote transmission switching system integrates the 13W/25W board-level PD module, can meet the POE power supply protocol and supply power for forwarding, reduces the design redundancy and extra cost of POE power supply of a third-party video box, can be used for supplying power for forwarding 13W/25W by the USB compiling and decomposing integrated switching box for power backup, and improves the stability and the applicability of the system.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic composition diagram of a USB compiling and resolving integrated switching box according to an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention;
fig. 2 is a schematic diagram of data transmission of a USB codec integrated switching box in a forward transmission mode of an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention;
fig. 3 is a schematic diagram of data transmission of a USB compiling and resolving integrated switching box in a local loopback mode of an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention;
fig. 4 is a schematic diagram of data transmission of a USB codec integrated switching box in a multi-stage cascade mode according to an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The multi-mode USB2.0 seat remote transmission switching system solves the compatibility problem of various scenes during USB2.0 seat remote transmission switching and cascading, supports a forward transmission mode, meets the requirement of forward seat USB remote transmission man-machine separation, supports a local loop mode, avoids complex equipment carrying/cable disassembly, can switch equipment such as a host/touch panel and the like at the butt joint seat side in real time, and also supports a multi-stage cascading mode to deal with a kylin or congealing system host (a special host which does not support a keyboard and mouse composite equipment, a multi-stage HUB cascading bottleneck and the like).
The multi-mode USB2.0 seat remote transmission switching system solves the problem of low integration level caused by limited functions during on-site integration during seat USB remote transmission, can perform multi-mode switching, integrates a third party TX/RX video box, and has rich functions of performing man-machine interaction and supporting POE power supply forwarding by a practical and friendly screen control panel.
The multi-mode USB2.0 seat remote transmission switching system solves the problems of single interface function and equipment management and maintenance during field integration, is small and exquisite in size and rich in interfaces by utilizing a USB compiling and resolving integrated switching box, and supports a keyboard, a mouse, two U disks and two RJ45 network interfaces to facilitate system integration; the equipment is integrated, the coding box or the decoding box can be switched in real time through the screen control panel module and the coding/decoding switching dial code, so that management and maintenance are facilitated, the external cable can be adapted to various working scenes without changing the dynamic switching equipment, convenience is provided for system integration and field application, and the integration level and the efficiency are greatly improved.
The invention discloses a multi-mode USB2.0 seat remote transmission switching system, which comprises one or more USB compiling and decoding integrated switching boxes;
if the system comprises a pair of USB compiling and decoding integrated switching boxes, the system is adapted to a forward transmission mode;
if the system comprises the USB compiling and solving integrated switching box, the system is adapted to a local loopback mode;
if the system comprises a plurality of USB compiling and solving integrated switching boxes, the system is adaptive to a multi-stage cascade mode.
In order to more clearly describe the multi-mode USB2.0 agent remote transmission switching system of the present invention, each module in the embodiment of the present invention is described in detail below with reference to the accompanying drawings.
The multi-mode USB2.0 agent remote transmission switching system according to the first embodiment of the present invention includes one or more USB compiling and solving integrated switching boxes, and fig. 1 is a schematic composition diagram of a USB compiling and solving integrated switching box according to an embodiment of the multi-mode USB2.0 agent remote transmission switching system according to the present invention, and referring to fig. 1, the USB compiling and solving integrated switching box includes:
the double-layer USB seat 1 comprises a USB seat KEY and a USB seat MOUSE and is used for connecting keyboard and MOUSE equipment;
the double-layer USB seat 2 comprises a USB seat 1 and a USB seat 2 which are respectively used for connecting external USB equipment;
the USB-B square port seat is used for connecting external square port USB-B equipment;
the alternative switching module comprises an alternative switch 1, an alternative switch 2, an alternative switch 3, an alternative switch 4 and an alternative switch 5, which are respectively used for switching USB data streams among the double-layer USB seat 1, the double-layer USB seat 2, the USB2.0 concentrator and the USB expander module so as to realize flexible self-defined mode switching;
the KM switching module is used for switching between the USB seat KEY and the USB seat MOUSE;
the USB2.0 concentrator comprises a concentrator 1 and a concentrator 2, which are respectively used for the composition of USB disk data streams of a USB seat 1 and a USB seat 2 of a double-layer USB seat 2, and the composition of the USB disk data of a USB expander module and the keyboard and mouse data of a KM switching module and the USB disk data streams;
the USB expander module is used for receiving the USB equipment data stream of the double-layer USB seat 2 at the encoding side, converting the USB equipment data stream into parallel port data and transmitting the parallel port data to the FPGA processing module; the USB interface is also used for receiving the parallel port data of the FPGA processing module at the decoding side, converting the parallel port data into USB data and transmitting the USB data to the USB-B square socket through the USB2.0 concentrator;
the FPGA processing module is used for processing the data of the KM switching module, the USB expander module and the screen control panel module and converting the data into a network data stream to be butted with the network interface module;
the network interface module comprises a PHY module 1 and a PHY module 2 which are respectively used for connecting an external network;
the power supply forwarding circuit is used for supporting the POE power supply of the equipment and simultaneously performing power supply forwarding expansion when the POE is cascaded with the third-party audio and video box;
the screen control panel module is used for setting the working mode of the USB compiling and decoding integrated switching box, setting the characteristic functions of seat switching/distribution, seat authority management and control and the like;
and the coding/decoding switching dial is used for adjusting the USB coding and decoding integrated switching box into a USB coding box or a USB decoding box.
The method can be divided into 3 working modes according to functions: the multi-mode wireless communication system comprises a forward transmission mode, a local loopback mode and a multi-stage cascade mode, and can adapt to a multi-mode working scene by using a pair of coding and decoding devices, a single coding device and a plurality of pairs of coding and decoding devices. The coding device and the decoding device share hardware, can freely switch coding and decoding functions through panel dialing, freely switch combination according to field application, do not need to repeatedly replace devices and plug and pull port cables, provide convenience for system integration and field application, and can greatly improve integration level and efficiency.
If the system includes a pair of USB compiling and solving integrated switching boxes, the system adapts to the forward transmission mode, fig. 2 is a schematic diagram of data transmission of the USB compiling and solving integrated switching box in the forward transmission mode of an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention, referring to fig. 2, the working and data flow relationship of the forward transmission mode is:
respectively adjusting the pair of USB coding and decoding integrated switching boxes into a USB coding box and a USB decoding box through coding/decoding dial codes;
the USB encoding box comprises the working process that:
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are connected, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 (at the moment, the conduction relations of the alternative switches are both IN-O1);
the KM switching module analyzes data of the D0 port and the D1 port and transmits the data to the FPGA processing module through a UART port of the KM switching module;
after the data of the two peripheral USB disks are accessed, performing data composite packaging through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, transmitting the data to an alternative switch 4 and an alternative switch 5 through the U0 port of the USB2.0 concentrator (at the moment, the conduction relation of the two alternative switches is IN-O2), and switching and transmitting the data to the USB expander module;
the USB expander module converts the data of the composite package into CLEI parallel port bus data and transmits the data to the FPGA processing module;
the FPGA processing module analyzes and protocols the keyboard and mouse data and the two peripheral USB flash disk data, and selects the function items through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the data are converted into RGMII data flow and transmitted to the network interface module, and the network interface module transmits the data to the switch through the kilomega power interface to realize remote transmission.
The USB decoding box comprises the working process that:
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and restored into corresponding keyboard and mouse data and two peripheral USB flash disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, transmitting the analyzed keyboard and mouse data to a KM switching module through a UART port;
the KM switching module analyzes and converts the data of the UART port, and switches and transmits the data to a downstream D0 port of the USB2.0 concentrator through an upstream U0 port and an alternative switch 3 (the conduction relation of the alternative switch is IN-O2); the FPGA processing module converts the analyzed data of the two peripheral USB flash disks into CLEI parallel port bus data and transmits the CLEI parallel port bus data to the USB expander module;
the USB expander module converts the CLEI parallel port bus data into two packaged peripheral USB flash disk data, and the data are switched and transmitted to a downstream D1 port of the USB2.0 concentrator through an alternative switch 5 (the conduction relation of the alternative switch is IN-O1);
the USB2.0 hub combines the data of the D0 port and the D1 port and transmits the data to the USB-B square socket, and the seat is connected to a host through a USB-B square socket to realize the function of seat remote transmission switching.
And if the integrated TX video box is selected, integrating keyboard and mouse data and two peripheral USB flash disk data with the video network stream of each peripheral TX/RX video playing box, and distributing the video network stream to a network.
When the network interface module of the USB coding box transmits data to the switch through the gigabit electric port to realize remote transmission, or the USB decoding box receives the network data stream remotely transmitted by the switch through the network interface module and converts the network data stream into an RGMII data stream to transmit the RGMII data stream to the FPGA processing module, the function item selection is carried out through the screen control panel module: if the POE function and power supply forwarding are selected to be supported (13W/25W is selected), and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
In the mode, a pair of coding and decoding devices are used in a matched mode, so that the data streams of a keyboard, a mouse and two USB flash disk devices can be remotely transmitted through a network IP (Internet protocol) seat; the coding equipment is placed at the seat end to receive various USB equipment insertions, and the decoding equipment is butted with the host computer and is in centralized management of a machine room, so that the effect of man-machine separation management control is achieved; the system can be integrated with various TX/RX video playing boxes, video network streams and KM/U disk data streams are merged and then distributed in a network manner, and the seat function is superposed on the basis of traditional audio and video remote transmission, so that man-machine separation-visual seat management and control are realized more thoroughly; and support POE power supply agreement, can realize 13W 25W's switch POE power supply and forward, make various video broadcast boxes accomplish POE power supply backup and the seamless switching of power supply system on original power supply basis, promote the stability of whole integrated system greatly.
If the system includes one USB compiling and solving integrated switching box, the system adapts to the local loopback mode, fig. 3 is a schematic diagram of data transmission of the USB compiling and solving integrated switching box in the local loopback mode of an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention, referring to fig. 3, the working and data flow relationship of the local loopback mode is:
adjusting one USB coding and decoding integrated switching box into a USB coding box through coding/decoding dial codes;
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are connected, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 (both the conduction relations of the alternative switches are IN-O1);
the KM switching module performs merging and packaging of a D0 port and a D1 port, and switches and transmits the upstream U1 port of the KM switching module to a downstream D0 port of a USB2.0 concentrator through an alternative switch 3 (the conduction relation of the alternative switch is IN-O2);
after the data of the two peripheral USB disks are accessed, performing data composite packaging through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, and switching and transmitting the data to the downstream D2 port of the USB2.0 concentrator through a U0 port of the USB2.0 concentrator through an alternative switch 4 (the conduction relation of the alternative switch is IN-O1);
and the USB2.0 concentrator combines the data of the D0 port and the D1 port, transmits the data to the USB-B square socket, and is connected to the host/touch panel through the USB-B square socket to realize the local loopback function of the seat.
In the forward transmission mode, the working mode can be switched through the screen control panel module, and the configurable coding box is changed from the forward transmission mode to the local loopback mode. The mode switching can adapt to the seat side to control the scenes of a local host/a touch panel and the like, at the moment, a decoding box is not required to be disassembled from a machine room to the seat and cables/terminals and the like, keyboard and mouse and two USB flash disk data are directly looped back from a seat side coding box, the local host/the touch panel and the like are butted through a USB-B square socket, the mode switching can be realized only, the cables and external terminals are not required to be changed in the whole process, and the usability and the user experience are greatly improved.
If the system includes a plurality of USB compiling and solving integrated switching boxes, the system adapts to the multi-stage cascade mode, fig. 4 is a schematic diagram of data transmission of the USB compiling and solving integrated switching box in the multi-stage cascade mode of an embodiment of the multi-mode USB2.0 agent remote transmission switching system of the present invention, referring to fig. 4, the working and data flow relationship of the multi-stage cascade mode is:
on the basis of the forward transmission mode, respectively adjusting the rest of the USB coding and decoding integrated switching boxes into USB coding boxes through coding/decoding dial codes;
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and restored into corresponding keyboard and mouse data and two peripheral USB flash disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the related data of the USB are analyzed and transmitted to the KM switching module through the UART port;
the KM switching module analyzes and separates the composite data of the UART port to obtain keyboard data and mouse data, and the keyboard data and the mouse data are separately cascaded through a plurality of alternative switches and a double-layer USB seat 1 through an upstream U0 port and an upstream U1 port to realize a multi-stage cascade function.
When the USB decoding box receives the network data stream remotely transmitted by the switch through the network interface module and converts the network data stream into an RGMII data stream to be transmitted to the FPGA processing module, the function item selection is carried out through the screen control panel module: if the POE function and the power supply forwarding are selected to be supported and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
The decoding box can realize the butt joint of the data streams of a keyboard, a mouse and two USB flash disk devices which are remotely transmitted by the IP-based network seat with the host, so that the centralized management of a machine room is met, and the effect of man-machine separation management control is achieved; the working mode can be switched through the screen control panel module, and the configurable decoding box is changed from a forward transmission mode to a multi-stage cascade mode. This mode switching can be adapted to the following two specific scenarios:
firstly, kylin or congesting national system hosts (special hosts and the like) do not support key and mouse compound equipment, at the moment, the forward transmission mode cannot meet the scene through USB2.0 concentrator data compounding, and the forward transmission mode needs to be switched to a multi-stage cascade mode to deal with more diversified field deployment and control integration, so that the product competitiveness and the applicability are greatly improved.
Secondly, the seat remote transmission USB data output by the decoding box is transmitted to a self-adopted USB HUB or a third-party USB switcher of a client, is limited by the receiving capacity of the self-adopted USB HUB or the third-party USB switcher, only supports two-stage or three-stage HUB cascade connection, and carries out composite output through USB2.0 HUB data in a forward transmission mode, the external cable cascade environment is uncertain, and the stability cannot be ensured; we can switch to the 'multi-stage cascade mode' to ensure that the separated data output by themselves does not become a bottleneck, and theoretically infinite cascade can be realized; the system can deal with more diversified field distribution and control integration, and greatly improves the stability and the universality of products.
At the moment, the system can still be integrated with various TX/RX video playing boxes, video network streams and KM/U disk data streams are merged and then distributed in a network manner, and the seat function is superposed on the basis of traditional audio and video remote transmission, so that man-machine separation-visual seat management and control are realized more thoroughly; similarly, support POE power supply agreement, can realize that 13W 25W's switch POE power supply is forwardded, make various video broadcast boxes accomplish POE power supply backup and the seamless switching of power supply system on original power supply basis, promote whole integrated system's stability greatly.
The above embodiment simply describes the respective operation scenarios of the forward transmission mode, the local backhaul mode and the multi-stage cascade mode, the system can not only set different adaptation modes individually for the application scenarios, but also can apply multiple pairs and more (dozens of pairs) of USB compiling and solving integrated switching boxes in a large-scale system, so as to implement adaptation of the mixed mode:
(1) the invention comprises the following steps: the screen control panel module and the FPGA processing module are used for making a visual interactive control interface, special functions such as → seat switching/distribution, seat authority control and the like are specially designed, the large-scale command center, the large-scale conference system and the like are responded, the master control seats can control more seats and more seats, and keyboard and mouse/USB flash disk authority control and the like can be carried out on different seats, so that the safety of the system can be greatly improved, and the confidentiality and the information safety can be better maintained.
The agent function of the invention is not the traditional point-to-point transmission, and can realize the multi-point autonomous switching management and control.
The IP of the switch and the gateway is obtained through the FPGA processing module and the PHY module, the IP of the USB coding and decoding box can be automatically attributed and the current communication in-place state can be automatically displayed, and the display, multi-point switching/distribution and authority control are carried out through the screen control panel module. The highest management and control authority (BOSS seats) can be granted to the specific USB coding and decoding box through the safety key, so that the specific seats can be realized, a plurality of hosts can be controlled remotely more conveniently, and the USB authority for managing the seats is acquired more safely.
(2) The dual-network USB backup function, FPGA processing module can communicate with PHY module 1, PHY module 2 separately and insert to the switch network, can adapt through the mode configuration: for military safety mutual backup scenes, main and standby seamless safety certification and other requirements, two network ports of the USB coding and decoding box can be simultaneously accessed to the switching system, the mutual backup function is selected through the screen control panel module, at the moment, 2 pieces of mutual backup data can be output by a single seat and the IP is bound, once one of the networks is interrupted, the other network can be seamlessly connected, and the use stability and the use safety of a user are greatly improved.
(3) The KM switching module is designed autonomously, can support conventional keyboard and mouse peripheral data, can also support a touch screen, a handwriting pad and a touch pad in a matched mode, and a PS2 keyboard and mouse/handle and the like, is more comprehensive in function and stronger in compatibility compared with a traditional seat remote transmission function, and improves the system integration level and the universality.
It should be noted that, the multi-mode USB2.0 agent remote transmission switching system provided in the foregoing embodiment is only illustrated by the division of the functional modules, and in practical applications, the functions may be allocated to different functional modules according to needs, that is, the modules or steps in the embodiment of the present invention are further decomposed or combined, for example, the modules in the foregoing embodiment may be combined into one module, or may be further split into multiple sub-modules, so as to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not to be construed as unduly limiting the present invention.
The terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing or implying a particular order or sequence.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A multimode USB2.0 seat remote transmission switching system is characterized in that the system comprises one or more USB compiling and decoding integrated switching boxes;
if the system comprises a pair of USB compiling and decoding integrated switching boxes, the system is adapted to a forward transmission mode;
if the system comprises the USB compiling and solving integrated switching box, the system is adapted to a local loopback mode;
if the system comprises a plurality of USB compiling and solving integrated switching boxes, the system is adaptive to a multistage cascade mode.
2. The multi-mode USB2.0 agent remote switching system according to claim 1, wherein the USB codec integrated switching box comprises:
the double-layer USB seat 1 comprises a USB seat KEY and a USB seat MOUSE and is used for connecting keyboard and MOUSE equipment;
the double-layer USB seat 2 comprises a USB seat 1 and a USB seat 2 which are respectively used for connecting external USB equipment;
the USB-B square port seat is used for connecting external square port USB-B equipment;
the alternative switching module comprises an alternative switch 1, an alternative switch 2, an alternative switch 3, an alternative switch 4 and an alternative switch 5 which are respectively used for switching the USB data streams between the double-layer USB seat 1 and the double-layer USB seat 2, the USB2.0 concentrator and the USB expander module;
the KM switching module is used for switching between the USB seat KEY and the USB seat MOUSE;
the USB2.0 concentrator comprises a concentrator 1 and a concentrator 2, and is respectively used for the composition of USB disk data streams of a USB seat 1 and a USB seat 2 of a double-layer USB seat 2, and the composition of keyboard and mouse data streams of a USB expander module and keyboard and mouse data of a KM switching module;
the USB expander module is used for converting a USB equipment data stream of the double-layer USB seat 2 received at the encoding side into parallel port data and transmitting the parallel port data to the FPGA processing module; the USB interface is also used for receiving the parallel port data of the FPGA processing module at the decoding side, converting the parallel port data into USB data and transmitting the USB data to the USB-B square socket through the USB2.0 concentrator;
the FPGA processing module is used for processing the data of the KM switching module, the USB expander module and the screen control panel module and converting the data into a network data stream to be butted with the network interface module;
the network interface module comprises a PHY module 1 and a PHY module 2 which are respectively used for connecting an external network;
the power supply forwarding circuit is used for supporting the POE power supply of the equipment and simultaneously performing power supply forwarding expansion when the POE is cascaded with the third-party audio and video box;
the screen control panel module is used for setting the working mode of the USB compiling and decoding integrated switching box, and setting seat switching/distribution and seat authority management and control;
and the coding/decoding switching dial is used for adjusting the USB coding and decoding integrated switching box into a USB coding box or a USB decoding box.
3. The multi-mode USB2.0 agent remote switching system according to claim 2, wherein the forward transmission mode is:
respectively adjusting a pair of USB encoding and decoding integrated switching boxes into a USB encoding box and a USB decoding box through encoding/decoding dial codes;
and after the USB coding box and the USB decoding box are electrified, data import, transmission and data output are carried out, and the seat remote transmission switching is realized.
4. The multi-mode USB2.0 agent remote switching system according to claim 3, wherein the USB encoding box operates as follows:
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are accessed, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 respectively;
the KM switching module analyzes data of the D0 port and the D1 port and transmits the data to the FPGA processing module through a UART port of the KM switching module;
after the data of the two peripheral USB disks are accessed, data composite packaging is carried out through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, and the data are transmitted to the one-out-of-two switch 4 and the one-out-of-two switch 5 through the U0 port of the USB2.0 concentrator and are switched and transmitted to the USB expander module;
the USB expander module converts the data of the composite package into CLEI parallel port bus data and transmits the data to the FPGA processing module;
the FPGA processing module analyzes and protocols the keyboard and mouse data and the two peripheral USB flash disk data, and selects the function items through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the data are converted into RGMII data flow and transmitted to the network interface module, and the network interface module transmits the data to the switch through the kilomega power interface to realize remote transmission.
5. The multi-mode USB2.0 agent remote switching system according to claim 4, wherein the USB decoding box operates as follows:
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and reduced into corresponding keyboard and mouse data and two peripheral U disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, transmitting the analyzed keyboard and mouse data to a KM switching module through a UART port;
the KM switching module analyzes and converts the data of the UART port and switches and transmits the data to a downstream D0 port of the USB2.0 concentrator through an upstream U0 port and the two-way switch 3; the FPGA processing module converts the analyzed data of the two peripheral USB flash disks into CLEI parallel port bus data and transmits the CLEI parallel port bus data to the USB expander module;
the USB expander module converts the CLEI parallel port bus data into two packaged peripheral USB flash disk data, and the data are switched and transmitted to a downstream D1 port of the USB2.0 concentrator through the alternative switch 5;
the USB2.0 concentrator combines the data of the D0 port and the D1 port, transmits the data to the USB-B square socket, and is connected to the host through the USB-B square socket to realize the seat remote transmission switching function.
6. The multi-mode USB2.0 agent remote switching system according to claim 4 or 5, wherein if the integrated TX video box is selected, the keyboard and mouse data and the two peripheral U-disk data are integrated with the video network stream of each peripheral TX/RX video playing box and distributed to the network.
7. The multi-mode USB2.0 agent remote transmission switching system of claim 6, wherein when the network interface module of the USB encoding box transmits data to the switch through the gigabit power port to realize remote transmission, or the USB decoding box receives the network data stream remotely transmitted by the switch through the network interface module and converts the received network data stream into an RGMII data stream to transmit to the FPGA processing module, the screen control panel module selects the function item: if the POE function and the power supply forwarding are selected to be supported and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
8. The multi-mode USB2.0 agent remote switching system according to claim 2, wherein the local loopback mode is:
adjusting one USB coding and decoding integrated switching box into a USB coding box through coding/decoding dial codes;
after the USB coding box is powered on, the USB coding box receives keyboard and mouse data and two peripheral USB flash disk data through the double-layer USB seat 1 and the double-layer USB seat 2 respectively;
after the keyboard and the mouse are accessed, the keyboard and the mouse are switched and transmitted to a downstream D0 port and a downstream D1 port of the KM switching module through an alternative switch 1 and an alternative switch 2 respectively;
the KM switching module performs merging and packaging of a D0 port and a D1 port, and switches and transmits the merged packet to a downstream D0 port of the USB2.0 hub through an upstream U1 port of the KM switching module through an alternative switch 3;
after the data of the two peripheral USB disks are accessed, performing data composite packaging through a downstream D0 port and a downstream D1 port of the USB2.0 concentrator, and switching and transmitting the data to a downstream D2 port of the USB2.0 concentrator through a U0 port of the USB2.0 concentrator through an alternative switch 4;
and the USB2.0 concentrator combines the data of the D0 port and the D1 port, transmits the data to the USB-B square socket, and is connected to the host/touch panel through the USB-B square socket to realize the local loopback function of the seat.
9. The multi-mode USB2.0 agent remote switching system according to claim 5, wherein the multi-stage cascade mode is:
on the basis of the forward transmission mode, respectively adjusting the rest of the USB coding-decoding integrated switching boxes into USB coding boxes through coding/decoding dial codes;
after the USB decoding box is powered on, the USB decoding box receives and converts the network data stream remotely transmitted by the switch into an RGMII data stream through the network interface module and transmits the RGMII data stream to the FPGA processing module;
the FPGA processing module receives the RGMII data stream and then carries out protocol analysis, the data is sub-packaged and restored into corresponding keyboard and mouse data and two peripheral USB flash disk data, and function item selection is carried out through the screen control panel module: if the integrated TX video box and the corresponding flow control delay setting are not selected, the related data of the USB are analyzed and transmitted to the KM switching module through the UART port;
the KM switching module analyzes and separates the composite data of the UART port to obtain keyboard data and mouse data, and the keyboard data and the mouse data are separately cascaded through a plurality of alternative switches and a double-layer USB seat 1 through an upstream U0 port and an upstream U1 port to realize a multi-stage cascade function.
10. The multi-mode USB2.0 agent remote switching system according to claim 9, wherein when the USB decoding box receives the network data stream remotely transmitted from the switch through the network interface module and converts the network data stream into RGMII data stream to be transmitted to the FPGA processing module, the function item selection is performed through the screen control panel module: if the POE function and the power supply forwarding are selected to be supported and the corresponding power is selected, a POE power supply protocol is supported; otherwise, the electric port of the power supply forwarding circuit only carries out data stream transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310148467.XA CN115988246B (en) | 2023-02-22 | 2023-02-22 | Multimode USB2.0 seat remote transmission switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310148467.XA CN115988246B (en) | 2023-02-22 | 2023-02-22 | Multimode USB2.0 seat remote transmission switching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115988246A true CN115988246A (en) | 2023-04-18 |
| CN115988246B CN115988246B (en) | 2023-05-16 |
Family
ID=85970938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310148467.XA Active CN115988246B (en) | 2023-02-22 | 2023-02-22 | Multimode USB2.0 seat remote transmission switching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115988246B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050273312A1 (en) * | 2004-06-03 | 2005-12-08 | Francisc Sandulescu | Distriubte USB KVM switch |
| CN101499944A (en) * | 2008-01-28 | 2009-08-05 | 宏正自动科技股份有限公司 | Computer management system and combined console module |
| CN204595844U (en) * | 2015-01-30 | 2015-08-26 | 亚信电子股份有限公司 | USB multi-computer switcher |
| CN204595794U (en) * | 2015-03-13 | 2015-08-26 | 亚信电子股份有限公司 | USB computer switcher signal extender and extender system |
| CN105630448A (en) * | 2015-12-24 | 2016-06-01 | 浪潮集团有限公司 | KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) |
| CN205405443U (en) * | 2016-03-08 | 2016-07-27 | 浪潮集团有限公司 | Control of USB keyboard mouse system for KVM system |
| CN205608715U (en) * | 2016-04-19 | 2016-09-28 | 浪潮集团有限公司 | Server management mainboard based on FPGA platform |
| CN209281283U (en) * | 2018-12-18 | 2019-08-20 | 深圳市鲲鹏视讯科技有限公司 | A kind of double copies distribution KVM attends a banquet cooperative system |
| CN111930658A (en) * | 2020-06-30 | 2020-11-13 | 蒋翔东 | USB switching device and method capable of realizing many-to-many switching control |
| CN213024329U (en) * | 2020-09-27 | 2021-04-20 | 中国电子科技集团公司第五十二研究所 | USB key mouse switching control device based on network |
| CN217655523U (en) * | 2022-07-19 | 2022-10-25 | 上海晨驭信息科技有限公司 | Seat and host integrated distributed KVM device |
-
2023
- 2023-02-22 CN CN202310148467.XA patent/CN115988246B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050273312A1 (en) * | 2004-06-03 | 2005-12-08 | Francisc Sandulescu | Distriubte USB KVM switch |
| CN101499944A (en) * | 2008-01-28 | 2009-08-05 | 宏正自动科技股份有限公司 | Computer management system and combined console module |
| CN204595844U (en) * | 2015-01-30 | 2015-08-26 | 亚信电子股份有限公司 | USB multi-computer switcher |
| CN204595794U (en) * | 2015-03-13 | 2015-08-26 | 亚信电子股份有限公司 | USB computer switcher signal extender and extender system |
| CN105630448A (en) * | 2015-12-24 | 2016-06-01 | 浪潮集团有限公司 | KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) |
| CN205405443U (en) * | 2016-03-08 | 2016-07-27 | 浪潮集团有限公司 | Control of USB keyboard mouse system for KVM system |
| CN205608715U (en) * | 2016-04-19 | 2016-09-28 | 浪潮集团有限公司 | Server management mainboard based on FPGA platform |
| CN209281283U (en) * | 2018-12-18 | 2019-08-20 | 深圳市鲲鹏视讯科技有限公司 | A kind of double copies distribution KVM attends a banquet cooperative system |
| CN111930658A (en) * | 2020-06-30 | 2020-11-13 | 蒋翔东 | USB switching device and method capable of realizing many-to-many switching control |
| CN213024329U (en) * | 2020-09-27 | 2021-04-20 | 中国电子科技集团公司第五十二研究所 | USB key mouse switching control device based on network |
| CN217655523U (en) * | 2022-07-19 | 2022-10-25 | 上海晨驭信息科技有限公司 | Seat and host integrated distributed KVM device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115988246B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101257326B (en) | Method and system for matching pair of wireless transmitting kit and wireless receiving kit | |
| US20100322251A1 (en) | Method and System for Virtually Switching Digital Video/Audio and Auxiliary Control Signals for Digital Signage Applications | |
| US20050231462A1 (en) | Keyboard video mouse switch and the method thereof | |
| CN102812668A (en) | A method and an apparatus for transmitting messages in home network system | |
| CN200993768Y (en) | IP based digitalized KVM system | |
| CN102545962A (en) | Network signal transmission method, equipment and system | |
| CN105025304A (en) | IP-network-based digital direct-broadcasting sound console | |
| CN105306873A (en) | Portable desktop audio and video conference device and system | |
| CN111930658A (en) | USB switching device and method capable of realizing many-to-many switching control | |
| CN103036876B (en) | A kind of Integral computer equipment and application thereof realizing unified operation under Network Isolation state | |
| CN201601784U (en) | Portable video session terminal | |
| CN115988246A (en) | Multi-mode USB2.0 seat remote transmission switching system | |
| CN110189561B (en) | Distributed movable teaching system | |
| CN101945059A (en) | IP-based digital home common gateway system | |
| CN111787360A (en) | IP network-based streaming media coding and decoding equipment | |
| CN203313298U (en) | Signal switching apparatus | |
| CN108363336A (en) | A kind of remote control and the intelligent switching device locally controlled | |
| CN111787293A (en) | Video coding system | |
| CN111787419A (en) | Pluggable modular multifunctional video gateway | |
| CN213028093U (en) | Intelligent home fusion gateway | |
| US20070116042A1 (en) | Power extension apparatus having local area network switching function | |
| CN101226399B (en) | Household equipment network control system and control method thereof | |
| CN211653715U (en) | Hotel industry heterogeneous integration networking system based on Internet of things | |
| CN210629679U (en) | IP distributed table inserting system | |
| CN105337621A (en) | Electronic apparatus connecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |