CN216979757U - KVM switch supporting 2 host connections - Google Patents
KVM switch supporting 2 host connections Download PDFInfo
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- CN216979757U CN216979757U CN202220363038.5U CN202220363038U CN216979757U CN 216979757 U CN216979757 U CN 216979757U CN 202220363038 U CN202220363038 U CN 202220363038U CN 216979757 U CN216979757 U CN 216979757U
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Abstract
The present invention describes a KVM switch supporting 2 host connections, comprising: the USB interface circuit comprises a first Type-C input interface, a second Type-C input interface, a discrete circuit, a USB switching circuit and a power isolation circuit, wherein the discrete circuit, the USB switching circuit and the power isolation circuit are respectively connected with the first Type-C input interface and the second Type-C input interface; the first Type-C input interface is connected with the audio and video processor through a first MUX switch, and the second Type-C input interface is connected with the audio and video processor through a second MUX interface; the discrete circuit is connected with the selector switch; the USB switching circuit is connected with the USB signal processor, and the USB signal processor is respectively connected with the first output interface and the second output interface; wherein, through 2 host computers of first Type-C input interface and second Type-C input interface connection, select the host computer of controlling according to change over switch, power isolation circuit is used for keeping apart the power supply voltage of the host computer that has different voltage demands. From this, the function of this KVM switch of abundance that can be very big can improve user's experience degree.
Description
Technical Field
The present invention generally relates to a KVM switch that supports 2 host connections.
Background
KVM, an abbreviation for Keyboard Video Mouse, is a KVM switch that can access and control a computer by directly connecting to a Keyboard, Video or Mouse port. KVM technology does not require the target server to modify the software. This means that the target computer can be accessed at any time in the BIOS environment. The KVM provides true motherboard level access and supports multi-platform servers and serial devices.
Desktop past KVM switches required multiple data lines and video cables to be connected to each computer, respectively, thereby reducing flexibility, portability, and compatibility. The KVM switch with TYPE-C input utilizes the transmission capability of USB-C video transmission and USB data transmission, can be used for easily switching equipment by only one standard USB-C cable, and is compatible with various equipment supporting USB-C, such as a notebook computer, a smart phone, a tablet computer and a desktop computer. Meanwhile, the POWER function of the USB-C is also integrated on the KVM switch, which is very convenient for users. A TYPE-C integrated KVM switch is therefore the most desirable choice for tasks that wish to work with multiple devices simultaneously and entertain and leisure.
Along with the C-Type USB interface from USB3.1, USB Type-C has a trend of a unified consumer electronics interface, and is popularized very rapidly in the recent years. The product integrates TYPE-C on a KVM switch, and is a novel application.
SUMMERY OF THE UTILITY MODEL
In view of the above-described conventional circumstances, it is an object of the present invention to provide a KVM switch that can support connection and use of a plurality of hosts while improving user experience.
To this end, the present invention provides a KVM switch supporting 2 host connections, comprising: the USB interface circuit comprises a first Type-C input interface, a second Type-C input interface, a discrete circuit, a USB switching circuit and a power isolation circuit, wherein the discrete circuit, the USB switching circuit and the power isolation circuit are respectively connected with the first Type-C input interface and the second Type-C input interface; the first Type-C input interface is connected with the audio and video processor through a first MUX switch, and the second Type-C input interface is connected with the audio and video processor through a second MUX interface; the discrete circuit is connected with the selector switch; the USB switching circuit is connected with a USB signal processor, and the USB signal processor is respectively connected with the first output interface and the second output interface; the power isolation circuit is connected with the main power circuit; the audio and video processor is connected with the audio and video output interface; the power isolation circuit comprises a power isolation circuit, a first Type-C input interface, a second Type-C input interface, a selector switch and 2 hosts, wherein the first Type-C input interface and the second Type-C input interface are connected with the 2 hosts, the hosts controlled by the selector switch are selected, and the power isolation circuit is used for isolating the power supply voltage of the hosts with different voltage requirements.
In the KVM switch, the first Type-C input interface and the second Type-C input interface can be simultaneously connected with 2 hosts for use, the hosts to be controlled can be selected according to the change-over switch, the power isolation circuit can be used for isolating the power supply voltages of the hosts with different voltage requirements, the damage of the 2 hosts to the KVM switch due to different working voltages can be avoided, under the condition, the functions of the KVM switch can be greatly enriched, and the user experience is improved.
In addition, in the KVM switch according to the present invention, optionally, the first Type-C input interface includes a first PD interface and a first uplink interface, and the second Type-C input interface includes a second PD interface and a second uplink interface. From this, can conveniently carry out efficient data transmission at first Type-C input interface and second Type-C input interface.
In addition, in the KVM switch according to the present invention, optionally, the KVM switch further includes a first PD controller, a second PD controller, and an AUX switching circuit, wherein the first PD interface is connected to the first PD controller, and the first PD controller is connected to the switch and the AUX switching circuit, respectively; the first uplink interface is respectively connected with the first PD controller, the first MUX switch and the USB switching circuit; the first MUX switch and the second MUX switch are respectively connected with the audio and video processor; the discrete circuit is respectively connected with the first MUX switch and the second MUX switch; the second uplink interface is respectively connected with the second PD controller, the second MUX switch and the USB switching circuit; the second PD interface is connected to the second PD controller, and the second PD controller is connected to the switch and the AUX switching circuit, respectively. From this, can make things convenient for the data transmission of the first Type-C input interface of independent control and second Type-C input interface.
In addition, in the KVM switch according to the present invention, an LED indicator is optionally further included, and the LED indicator is respectively connected to the first PD controller, the discrete circuit, and the second PD controller. Therefore, the operating state of the KVM switch can be conveniently checked according to the LED indicating lamps.
In addition, in the KVM switch according To the present invention, optionally, the audio/video processor is a DP To HDMI converter, and the audio/video output interface is an HDMI video output interface. Therefore, the audio/video conversion and output can be conveniently carried out.
In addition, in the KVM switch according to the present invention, optionally, the first output interface is a USB2.0 downlink interface, and the second output interface is a USB2.0 downlink interface. Therefore, data transmission can be conveniently carried out.
In the KVM switch, the first Type-C input interface and the second Type-C input interface can be simultaneously connected with 2 hosts for use, the hosts to be controlled can be selected according to the change-over switch, the power isolation circuit can be used for isolating the power supply voltages of the hosts with different voltage requirements, the damage of the 2 hosts to the KVM switch due to different working voltages can be avoided, under the condition, the functions of the KVM switch can be greatly enriched, and the user experience is improved.
Drawings
Embodiments of the utility model will now be explained in further detail, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 is a block schematic diagram of a KVM switch showing one example of the present invention.
FIG. 2 is a block diagram of a KVM switch showing another example of the present invention.
Description of the symbols:
11 … first Type-C input interface, 12 … second Type-C input interface, 13 … discrete circuit, 14 … USB switching circuit, 15 … power isolation circuit, 16 … AUX switching circuit, 17 … switch, 18 … USB signal processor, 19 … main power circuit, 20 … audio/video processor, 21 … audio/video output interface, 22 … first output interface, 23 … second output interface, 24 … LED indicator light, 111 … first PD interface, 112 … first uplink interface, 113 … first PD controller, 114 … first MUX switch, 121 … second uplink interface, 122 … second PD interface, 123 … second MUX switch, 124 … second PD controller.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.
FIG. 1 is a block schematic diagram of a KVM switch showing one example of the present invention. FIG. 2 is a block diagram of a KVM switch showing another example of the present invention.
In the present invention, the KVM switch can be connected to a computer (such as Macbook Air, chord Notebook, etc.) with TYPE-C interface with PD AltMode function for use. The following scheme specifically analyzes a KVM switch capable of supporting 2 host connections, but it is understood that the present invention can be easily extended to a KVM switch capable of connecting more than 2 hosts by using a similar technique to the present scheme, and is not limited herein.
Referring to fig. 1 and 2, the KVM switch supporting 2-host connection according to the present invention may include a first Type-C input interface 11, a second Type-C input interface 12, and a discrete circuit 13, a USB switching circuit 14, and a power isolation circuit 15 connected to the first Type-C input interface 11 and the second Type-C input interface 12, respectively; the discrete circuit 13 may be connected with a changeover switch 17; the USB switching circuit 14 may be connected to the USB signal processor 18, and the USB signal processor 18 may be connected to the first output interface 22 and the second output interface 23, respectively; the power isolation circuit 15 may be connected to a main power circuit 19; the audio and video processor 20 can be connected with the audio and video output interface 21; wherein, connect 2 host computers through first Type-C input interface 11 and second Type-C input interface 12, select the host computer of controlling according to change over switch 17, power isolation circuit 15 is used for keeping apart the supply voltage of the host computer that has different voltage demands.
In the utility model, the first Type-C input interface 11 and the second Type-C input interface 12 can be simultaneously connected with 2 hosts for use, the hosts to be controlled can be selected according to the change-over switch 17, the power isolation circuit 15 can be used for isolating the power supply voltages of the hosts with different voltage requirements, and the damage of the different working voltages of the 2 hosts to the KVM switch can be avoided.
In some examples, the toggle switch 17 may be a push button switch, a slide switch, a touch screen switch, or the like.
In this embodiment, the first Type-C input interface 11 may include a first PD interface 111 and a first uplink interface 112, and the second Type-C input interface 12 may include a second PD interface 122 and a second uplink interface 121. In this case, the PD interface may serve as a fast charging interface, and the first PD interface 111, the first uplink interface 112, the second PD interface 122, and the second uplink interface 121 may all be USB interfaces of a Type-C, so that efficient data transmission can be performed conveniently at the first Type-C input interface 11 and the second Type-C input interface 12.
It can be understood that USB-C (i.e., Type-C Type USB interface) also has an important function, namely PD charging (PD fast charging). The KVM switch is provided with two PD charging interfaces which are respectively in one-to-one correspondence with the 2 uplink interfaces, and the method can provide the maximum 100W charging power for the 2 uplink interfaces, so that the 2 hosts can obtain the maximum charging power, and the fastest full charging time is achieved.
On the other hand, the PD voltage has voltages of different gears such as 5V/9V/12V/15V/20V, but the KVM switch needs to take power from the front end, and the required voltages of 2 hosts are possibly inconsistent, so the power isolation circuit 15 is designed in the KVM switch, and the damage to the product caused by the impact of different voltages of the 2 hosts is well avoided.
In this embodiment, the KVM switch may further include a first PD controller 113, a second PD controller 124, and an AUX switching circuit 16, the first PD interface 111 may be connected to the first PD controller 113, and the first PD controller 113 may be connected to the switch 17 and the AUX switching circuit 16, respectively; the first uplink interface 112 may be connected to the first PD controller 113, the first MUX switch 114, and the USB switching circuit 14, respectively; the first MUX switch 114 and the second MUX switch 123 may be respectively connected to the audio/video processor 20; the discrete circuit 13 may be connected to the first MUX switch 114 and the second MUX switch 123, respectively; the second uplink interface 121 may be connected to the second PD controller 124, the second MUX switch 123, and the USB switching circuit 14, respectively; the second PD interface 122 is connected to a second PD controller 124, and the second PD controller 124 may be connected to the switch 17 and the AUX switching circuit 16, respectively. From this, can make things convenient for the data transmission of independent control first Type-C input interface 11 and second Type-C input interface 12.
In this embodiment, the KVM switch further includes an LED indicator 24, and the LED indicator 24 may be connected to the first PD controller 113, the discrete circuit 13, and the second PD controller 124 respectively. Therefore, the operating state of the KVM switch can be conveniently checked according to the flashing state of the LED indicator lamp 24.
In this embodiment, the audio/video processor 20 may be a DP To HDMI converter, and the audio/video output interface 21 may be an HDMI video output interface. Therefore, the audio/video conversion and output can be conveniently carried out.
In this embodiment, the first output interface 22 may be a USB2.0 downlink interface, and the second output interface 23 may be a USB2.0 downlink interface. Therefore, data transmission can be conveniently carried out.
In some examples, with the USB2.0 downstream interface and the USB signal processor 18, a transmission rate of up to 480Mbps may be achieved; the maximum 4K/60HZ audio/video output rate can be realized by utilizing the HDMI audio/video output port.
The KVM exchanger in the scheme can be inserted into 2 HOSTs for use at the same time, and data and audio and video are switched to the HOST needing to be operated through the selector switch 17 (namely, with the operation of a switching button, a desktop of the notebook computer which we want to operate can be seen on a display, and a mouse and a keyboard can be accessed to control the notebook computer through 2 USB2.0 interfaces rich in products).
In this embodiment, when the KVM switch is used specifically, 2 PD100W power supplies may be connected To 2 PD interfaces (the first PD interface 111 and the second PD interface 112) of the KVM switch of the present apparatus, 2 TYPE-C uplink interfaces may be connected To a computer having a TYPE-C interface with a PD AltMode function, and the computer having the TYPE-C interface performs data transmission with the USB signal processor 18 and the DP To HDMI converter of the KVM switch of the present apparatus. And the device can provide the maximum 92W PD charge for the computer. And a plurality of USB devices can be connected to the USB2.0 downlink interface of the device. And the HDMIsink equipment can be connected to an HDMI audio/video output port of the device. All the devices connected with the downlink interface can work simultaneously, and the downlink interface data and the HDMI audio/video data can be switched to the corresponding computer by controlling the selector switch 17.
In the utility model, the first Type-C input interface 11 and the second Type-C input interface 12 can be simultaneously connected with 2 hosts for use, the hosts to be controlled can be selected according to the change-over switch 17, the power isolation circuit 15 can be used for isolating the power supply voltages of the hosts with different voltage requirements, and the damage of the different working voltages of the 2 hosts to the KVM switch can be avoided.
While the utility model has been specifically described above in connection with the drawings and examples, it will be understood that the above description is not intended to limit the utility model in any way. Those skilled in the art can make modifications and variations as necessary without departing from the true spirit and scope of the utility model, and such modifications and variations are intended to be within the scope of the utility model.
Claims (6)
1. A KVM switch supporting 2 host connections, comprising: the USB interface circuit comprises a first Type-C input interface, a second Type-C input interface, a discrete circuit, a USB switching circuit and a power isolation circuit, wherein the discrete circuit, the USB switching circuit and the power isolation circuit are respectively connected with the first Type-C input interface and the second Type-C input interface; the first Type-C input interface is connected with an audio and video processor through a first MUX switch, and the second Type-C input interface is connected with the audio and video processor through a second MUX interface; the discrete circuit is connected with the selector switch; the USB switching circuit is connected with a USB signal processor, and the USB signal processor is respectively connected with the first output interface and the second output interface; the power isolation circuit is connected with the main power circuit; the audio and video processor is connected with the audio and video output interface; the power isolation circuit is used for isolating the power supply voltage of the host with different voltage requirements.
2. The KVM switch according to claim 1,
the first Type-C input interface comprises a first PD interface and a first uplink interface, and the second Type-C input interface comprises a second PD interface and a second uplink interface.
3. The KVM switch according to claim 2,
the first PD interface is connected with the first PD controller, and the first PD controller is respectively connected with the selector switch and the AUX switching circuit; the first uplink interface is respectively connected with the first PD controller, the first MUX switch and the USB switching circuit; the first MUX switch and the second MUX switch are respectively connected with the audio and video processor; the discrete circuit is respectively connected with the first MUX switch and the second MUX switch; the second uplink interface is respectively connected with the second PD controller, the second MUX switch and the USB switching circuit; the second PD interface is connected to the second PD controller, and the second PD controller is connected to the switch and the AUX switching circuit, respectively.
4. The KVM switch according to claim 3,
the first PD controller is connected with the discrete circuit, and the second PD controller is connected with the discrete circuit.
5. The KVM switch according to claim 1,
the audio and video processor is a DP To HDMI converter, and the audio and video output interface is an HDMI video output interface.
6. The KVM switch according to claim 1,
the first output interface is a USB2.0 downlink interface, and the second output interface is a USB2.0 downlink interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220363038.5U CN216979757U (en) | 2022-02-22 | 2022-02-22 | KVM switch supporting 2 host connections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220363038.5U CN216979757U (en) | 2022-02-22 | 2022-02-22 | KVM switch supporting 2 host connections |
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| Publication Number | Publication Date |
|---|---|
| CN216979757U true CN216979757U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220363038.5U Active CN216979757U (en) | 2022-02-22 | 2022-02-22 | KVM switch supporting 2 host connections |
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- 2022-02-22 CN CN202220363038.5U patent/CN216979757U/en active Active
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