Anti-offline system for KVM (Keyboard Video Mouse) multi-host shared network
By designing signal and network sharing modules, the network outage problem when switching host devices in KVM devices is solved, ensuring that all host devices maintain network connectivity during the switching process and achieving stable network transmission.
Patent Information
- Application Number
- CN202423125672.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing KVM devices are prone to causing some host devices to lose network connection when switching host devices, making it impossible to achieve a stable network connection.
The system employs signal modules and network sharing modules, including a first HUB controller and a switch. The signal modules distribute signals during host device switching to ensure that each host device maintains network connectivity during the switching process.
This ensures that all connected host devices maintain a stable network connection when switching host devices in a KVM device, preventing network outages and guaranteeing that each host device can access the internet via wired connection at the same time.
Smart Images
Figure CN223513532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic circuit technology, specifically a KVM multi-host shared network anti-disconnection system. Background Technology
[0002] KVM is a device that allows users to switch between multiple host devices running different operating systems via a connected network port, keyboard, monitor, and mouse. With technological advancements, people's demand for internet access has increased, and a stable and continuous internet connection is a pressing need. While existing KVM products allow simultaneous operation of multiple internet-connected host devices, a problem arises when a host device connected to the KVM experiences a network outage. This leads to issues where certain functions are unavailable when switching to operate the disconnected host device via the KVM. Furthermore, the current structure of KVM devices cannot guarantee that all connected host devices can access the internet simultaneously. Utility Model Content
[0003] To address the technical deficiencies in the background technology, this utility model proposes a KVM multi-host shared network anti-disconnection system, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:
[0004] This utility model discloses a KVM multi-host shared network anti-disconnection system, which includes at least one host device and several data interfaces with different signal types, and further includes:
[0005] The communication interface is provided in at least two forms, which may be either a video input interface or a USB interface, or both. Each of the data interfaces is connected to the host device.
[0006] A signal module, connected to the communication interface, is used to communicate with the corresponding input device according to the control signal, obtain the signal output by the host device, and judge the signal to obtain various different types of communication signals;
[0007] A network sharing module is connected to the data interface and the signal module respectively, and is used to acquire network data from the data interface to realize real-time uninterrupted bidirectional communication between the host device and the Internet during the switching process.
[0008] Both the signal module and the network sharing module include a first HUB controller. The data interface is connected to the first HUB controller in the signal module and the network sharing module respectively, and realizes bidirectional communication with the first HUB controller.
[0009] As a further embodiment of this utility model, the network sharing module further includes a switch, which is connected to one of the ports of at least two of the first HUB controllers. The data interface is connected to the switch and enables network communication between the switch. The signal module controls the communication between the first HUB controller and the network sharing module.
[0010] As a further embodiment of this utility model, the signal module further includes a second HUB controller and a signal switching logic unit. The second HUB controller is connected to the signal switching logic unit and realizes bidirectional communication. The signal switching logic unit is connected to the first HUB controller and realizes bidirectional communication. The second HUB controller is connected to several data interfaces for signal transmission.
[0011] As a further embodiment of this utility model, the data interface connected to the second HUB controller is a video output interface, a USBA interface, a USBC interface, an audio interface, or a card reader interface.
[0012] As a further embodiment of this utility model, the data interface connected to the switch is a network cable interface.
[0013] The beneficial effects of this utility model are as follows: when the KVM device switches the signal transmission of the host device through the signal module, the network sharing module of this anti-disconnection system can ensure that each host device connected to the KVM device maintains a normal network connection, ensuring that each host device can access the Internet via wired connection at the same time, and preventing the network data transmission path of one host device connected to the KVM device from being interrupted when its signal transmission is switched to the signal transmission of another host device. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the anti-disconnection system.
[0015] Figure 2 This is a schematic diagram of the connection structure of each component in the anti-disconnection system.
[0016] Figure 3 This is a schematic diagram of the network sharing module in the anti-disconnection system when it is working.
[0017] In the diagram, 1 is the host device; 2 is the communication interface; 21 is the video input interface; 22 is the USB interface; 3 is the data interface; 31 is the video output interface; 32 is the USBA interface; 33 is the USBC interface; 34 is the audio interface; 35 is the card reader interface; 36 is the network cable interface; 4 is the signal module; 41 is the signal switching logic unit; 42 is the second HUB controller; 5 is the first HUB controller; 6 is the network sharing module; and 61 is the switch. Detailed Implementation
[0018] This utility model discloses a KVM multi-host shared network anti-disconnection system, such as... Figure 1 and Figure 2 As shown, the anti-disconnection system includes at least one host device 1 and several data interfaces 3 of different signal types, and also includes:
[0019] The communication interface 2 is provided in at least two forms, and can be either a video input interface 21 or a USB interface 22, or both. Each of the data interfaces 3 is connected to the host device 1.
[0020] Signal module 4, connected to the communication interface 2, is used to communicate with the corresponding input device according to the control signal, obtain the signal output by the host device 1, and judge the signal to obtain various types of communication signals;
[0021] The network sharing module 6 is connected to the data interface 3 and the signal module 4 respectively, and is used to acquire network data from the data interface 3 to realize real-time uninterrupted bidirectional communication between the host device 1 and the Internet during the switching process.
[0022] Both the signal module 4 and the network sharing module 6 include a first HUB controller 5. The data interface 3 is connected to the first HUB controller 5 in both the signal module 4 and the network sharing module 6, and enables bidirectional communication with the first HUB controller 5.
[0023] It should be noted that this anti-disconnection system is configured based on KVM devices. The communication transmission path of the KVM device is constructed using signal module 4, which consists of host device 1, communication interface 2, first HUB controller 5, signal module 4, and data interface 3. After connecting devices such as keyboards or mice to data interface 3, the KVM device can normally control multiple host devices 1. However, during the switching of host devices 1 by the KVM device through signal module 4, to prevent network signal transmission interruption for host devices 1 that are not currently transmitting signals, this anti-disconnection system can use signal... Module 4 forms a signal transmission path between the first HUB controller 5 connected to the current host device 1 and the first HUB controller 5 connected to other host devices 1. It splits the signal transmission path between the first HUB controller 5 connected to the current host device 1 and the network sharing module 6, and distributes the network signal to the first HUB controller 5 connected to the host device 1 that is not currently transmitting signals. This prevents the host device 1 that is not currently transmitting signals from losing network access, and ensures that each host device 1 connected to the KVM device maintains a normal network connection, so that each host device 1 can have wired internet access at the same time.
[0024] It needs to be further explained that, such as Figure 1 and Figure 2 As shown, the network sharing module 6 also includes a switch 61, which is connected to one of the ports of at least two of the first HUB controllers 5. The data interface 3 is connected to the switch 61 and enables network communication between the switch 61. The signal module 4 controls the communication between the first HUB controller 5 and the network sharing module 6.
[0025] In normal operation, switch 61 obtains network signals from the outside world through data interface 3 and distributes them to one interface of each first HUB controller 5. After signal distribution on the first HUB controller 5 is adjusted by signal module 4, the network signal is distributed to the port on the first HUB controller 5 connected to the signal interface, and then transmitted from the port to communication interface 2. The network signal is then transmitted to host device 1 through the connection between communication interface 2 and host device 1, enabling each host device 1 to access the internet via wired connection. However, when the KVM device switches host device 1, in order to ensure that it can switch to the target host device 1, it will cut off the signal transmission of host devices other than the target host device 1. During this process, it is easy for the signal transmission between switch 61 and the first HUB controller 5 to be interrupted. If the network signal transmission line between the B controllers 5 is cut off, the non-target host device 1 will lose network access. To address this, the signal module 4 forms a signal transmission path between the first HUB controller 5 connected to the target host device 1 and the first HUB controller 5 connected to the non-target host device 1. The network signal transmission path between the first HUB controller 5 connected to the target host device 1 and the switch 61 is introduced into the signal module 4. Then, the signal module 4 distributes the network signal of this signal transmission path to the port connected to the first HUB controller 5, thereby distributing the network signal to the non-target host device 1 to resolve the network loss of the non-target host device 1 when the KVM device switches to host device 1.
[0026] Specifically, such as Figures 1-3 As shown, the signal module 4 further includes a second HUB controller 42 and a signal switching logic unit 41. The second HUB controller 42 is connected to the signal switching logic unit 41 and enables bidirectional communication. The signal switching logic unit 41 is connected to the first HUB controller 5 and enables bidirectional communication. The second HUB controller 42 is connected to several data interfaces 3 for signal transmission.
[0027] The signal switching logic unit 41 not only controls the on / off of signal transmission paths of different first HUB controllers 5 by the second HUB controller 42, thus enabling the switching of signal transmission from different host devices 1 to the intelligent devices connected to the communication interface 2, but also functions as a processor. This processor is an execution unit for switching signal types, allowing for the switching of signal transmission types from different host devices 1 to the intelligent devices connected to the data interface 3. When the KVM device performs a host device 1 switching operation, the signal switching logic unit 41 sends control commands to the first HUB controller 5 and the second HUB controller 42 respectively, controlling the on / off of port signals in the first HUB controller 5 and the second HUB controller 42. By selecting different ports of the first HUB controller 5 and different ports of the second HUB controller 42, a signal transmission path is formed between different host devices 1, the communication interface 2, and the first HUB controller 42. The signal transmission path, consisting of controller 5 and data interface 3, enables the switching of signal transmission between different host devices 1. The signal switching logic unit 41 in the network sharing module 6, based on the occurrence of the signal transmission switching action, determines which host device 1 among the host devices 1 connected to the KVM device is about to switch to the KVM device to perform signal transmission. After analysis, it determines the port location in the second HUB controller 42 where the first HUB controller 5, which is not currently connected to the host device 1, forms a connection. Then, it sends a control command to the second HUB controller 42 to implement the network signal transmission path of the host device 1, which has switched to the KVM device to perform signal transmission, connecting it to the port in the second HUB controller 42 where the host device 1 is not currently connected. This achieves network signal splitting, ensuring that every host device 1 connected to the KVM device can access the internet via wired connection.
[0028] More specifically, such as Figures 1-3 As shown, the data interface 3 connected to the second HUB controller 42 is a video output interface 31, a USBA interface 32, a USBC interface 33, an audio interface 34, or a card reader interface 35.
[0029] The number of smart devices connected to the KVM device equipped with the anti-disconnection system can be adjusted by adjusting the number of data interfaces 3. The signal switching logic unit 41, as the main component for the KVM device to switch signal types, increases the number of data interfaces 3 on the second HUB controller 42 it is connected to, which enables the KVM device to perform signal transmission switching operations between different host devices 1 and more smart devices.
[0030] Specifically, such as Figure 2 and Figure 3 As shown, the data interface 3 connected to the switch 61 is a network cable interface 3631.
[0031] When the data interface 3 is used as the network cable interface 36, it can be connected to the network signal transmission line in the outside world. The switch 61 can then transmit network signals to the first HUB controller 5 through this network signal transmission path, so that the host device 1 can obtain the network signals transmitted by the first HUB controller 5 on its connected signal interface, thereby realizing the wired Internet access of the host device 1.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A KVM multi-host shared network anti-disconnection system, comprising at least one host device and several data interfaces of different signal types, characterized in that, Also includes: The communication interface is provided in at least two forms, which may be either a video input interface or a USB interface, or both. Each of the data interfaces is connected to the host device. A signal module, connected to the communication interface, is used to communicate with the corresponding input device according to the control signal, obtain the signal output by the host device, and judge the signal to obtain various different types of communication signals; A network sharing module is connected to the data interface and the signal module respectively, and is used to acquire network data from the data interface to realize real-time uninterrupted bidirectional communication between the host device and the Internet during the switching process. Both the signal module and the network sharing module include a first HUB controller. The data interface is connected to the first HUB controller in the signal module and the network sharing module respectively, and realizes bidirectional communication with the first HUB controller.
2. The anti-disconnection system according to claim 1, characterized in that, The network sharing module also includes a switch, which is connected to one of the ports of at least two of the first HUB controllers. The data interface is connected to the switch and enables network communication between the switch. The signal module controls the communication between the first HUB controller and the network sharing module.
3. The anti-disconnection system according to claim 2, characterized in that, The signal module further includes a second HUB controller and a signal switching logic unit. The second HUB controller is connected to the signal switching logic unit and enables bidirectional communication. The signal switching logic unit is connected to the first HUB controller and enables bidirectional communication. The second HUB controller is connected to several data interfaces for signal transmission.
4. The anti-disconnection system according to claim 3, characterized in that, The data interface connected to the second HUB controller is a video output interface, a USBA interface, a USBC interface, an audio interface, or a card reader interface.
5. The anti-disconnection system according to claim 2, characterized in that, The data interface connected to the switch is a network cable interface.