Multifunctional KVM docking station

Abstract

The utility model relates to the technical field of Type-C docking stations, and discloses a multifunctional KVM docking station, which comprises two groups of TYPE C ports and an MCU chip, the MCU chip is electrically connected with the two groups of TYPE C ports, an HDMI electronic change-over switch chip and a TYPE C-to-HDMI chip, the two groups of TYPE C ports comprise a UFP1 TYPE C port and a UFP2 TYPE C port, a CC1 of each group of TYPE C port is electrically connected with one group of TYPE C-to-HDMI chip, and a CC2 of the other group of TYPE C port is electrically connected with the other group of TYPE C-to-HDMI chip. The two groups of TYPE C-to-HDMI chips are electrically connected with the HDMI electronic change-over switch chip, HDMI output signals output by the two groups of TYPE C-to-HDMI chips are transmitted to the HDMI electronic change-over switch chip, and the multifunctional KVM docking station controls a switch through the MCU chip to switch input signals. Therefore, one set of keyboard and mouse can control two computers, charging and picture display can be switched, and the docking station is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of Type-C expansion docks, in particular to a multifunctional KVM expansion dock. Background Art

[0002] A Type-C docking station, also known as a Type-C port converter, is an external device designed for laptops, mobile phones, and other electronic products. By duplicating or even expanding a laptop's port, it allows the laptop to connect to external devices with different port shapes using just one Type-C port.

[0003] In the prior art, the expansion dock cannot realize the control of two computers with one set of keyboard and mouse, resulting in the need to perform plugging and unplugging operations back and forth during use, which is relatively troublesome. In view of this, we propose a multifunctional KVM expansion dock. Utility Model Content

[0004] The purpose of the present invention is to provide a multifunctional KVM expansion dock to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multifunctional KVM expansion dock, comprising two groups of TYPE C ports and an MCU chip, wherein the MCU chip is electrically connected to the two groups of TYPE C ports, an HDMI electronic switching switch chip, and a TYPE C to HDMI chip. The two groups of TYPE C ports include a UFP1 TYPE C port and a UFP2 TYPE C port. The CC1 of each group of TYPE C ports is electrically connected to a group of TYPE C to HDMI chips, the TYPE C to HDMI chips are electrically connected to the HDMI electronic switching switch chip, and the HDMI output signals output by the two groups of TYPE C to HDMI chips are transmitted to the HDMI electronic switching switch chip.

[0006] Optionally, the two groups of USB3.0 signal differential pairs of the TYPE C ports are respectively given to the multiplexing switch chip ASW3410, and the multiplexing switch chip ASW3410 controls the switching channels through the MCU chip, and the channels include channel A and channel B.

[0007] Optionally, the USB2.0 signals of the two groups of TYPE C ports are transmitted to the analog switch chip BL1532, and the analog switch chip BL1532 transmits the USB2.0 signals to the USB HUB chip RM1211. The four output ports of the USB HUB chip RM1211 are connected to the USB A socket to realize the switching of the external keyboard and mouse.

[0008] Optionally, the CC pins of the two groups of TYPE C ports are electrically connected to the common end of the analog switch chip BL1532, the CC pins of the TYPE C to HDMI chip are electrically connected to the port A end and the port B end respectively, and the switching control pin of the analog switch chip BL1532 is connected to the MCU pin.

[0009] Optionally, a touch button is electrically connected to the MCU chip.

[0010] Compared with the existing technology, this utility model provides a multifunctional KVM expansion dock with the following features:

[0011] Beneficial effects:

[0012] This multifunctional KVM expansion dock uses an MCU chip to control the switch to switch input signals or output signals, thereby enabling one set of keyboard and mouse to control two computers. It can also switch between charging and display, making it easier to use the expansion dock. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the circuit block diagram of the utility model;

[0014] Figure 2 This is a switching diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the USB 3.0 switching path of the present invention;

[0016] Figure 4 This is a schematic diagram of the USB 2.0 switching path of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figures 1-4As shown, the utility model provides a technical solution: a multifunctional KVM expansion dock, comprising two groups of TYPE C ports and an MCU chip, the MCU chip being electrically connected to the two groups of TYPE C ports, an HDMI electronic switching switch chip, and a TYPE C to HDMI chip, the two groups of TYPE C ports comprising a UFP1 TYPE C port and a UFP2 TYPE C port, CC1 of each group of TYPE C ports being electrically connected to a group of TYPE C to HDMI chips, the TYPE C to HDMI chip being electrically connected to the HDMI electronic switching switch chip, and the HDMI output signals output by the two groups of TYPE C to HDMI chips being transmitted to the HDMI electronic switching switch chip, the MCU chip controlling the switching of channel A or channel B, and then outputting from the common end to the HDMI socket to realize screen switching, and the model of the HDMI electronic switching switch chip is TS3DV642.

[0019] The differential pairs of USB 3.0 signals from the two Type-C ports are fed to the ASW3410 multiplexing switch chip, which, through an MCU, switches between channels A and B. The USB 2.0 signals from the two Type-C ports are then fed to the BL1532 analog switch chip, which in turn transmits them to the RM1211 USB hub chip. The RM1211's four output ports are connected to the USB A connector, enabling switching between external keyboards and mice.

[0020] In this embodiment, the CC pins of the two Type C ports are electrically connected to the common terminal of the analog switch chip BL1532. The CC pins of the Type C to HDMI chip are electrically connected to port A and port B, respectively. The switching control pin of the analog switch chip BL1532 is electrically connected to the MCU chip to control the switching path, thereby achieving charging switching. The MCU chip is electrically connected to a touch button for switching the input source.

[0021] like Figure 2 As shown in the figure, in the HDMI switching state, when the control pin is high, it switches to port A; when the PIN is low, it switches to port B.

[0022] like Figure 3 As shown in the figure, in the USB3.0 switching state, when the control pin is high, it switches to port A; when the PIN is low, it switches to port B.

[0023] like Figure 4As shown in the figure, in the USB2.0 switching state, when the control pin is high, it switches to port A; when the PIN is low, it switches to port B.

[0024] As an application of this embodiment:

[0025] When the device is powered on, the MCU controls the MOSFETs in the switch and charging paths, switching them to the UFP1 TYPE C path. At this point, charging, displaying the screen, and keyboard and mouse are all connected to the UFP1 TYPE C computer. If a key is pressed, the MOSFETs in the switch and charging paths switch to the UFP2 TYPE C path. At this point, charging, displaying the screen, and keyboard and mouse are all connected to the UFP2 TYPE C computer. This method switches each time a key is detected, allowing you to switch between UFP1 TYPE C and UFP2 TYPE C as the input source. This allows you to switch between keyboard and mouse control, displaying the screen, and charging.

[0026] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multifunctional KVM expansion dock, characterized by: It includes two groups of TYPE C ports and an MCU chip. The MCU chip is electrically connected to the two groups of TYPE C ports, the HDMI electronic switching switch chip, and the TYPE C to HDMI chip. The two groups of TYPE C ports include a UFP1 TYPE C port and a UFP2 TYPE C port. The CC1 of each group of TYPE C ports is electrically connected to a group of TYPE C to HDMI chips. The TYPE C to HDMI chip is electrically connected to the HDMI electronic switching switch chip, and the HDMI output signals output by the two groups of TYPE C to HDMI chips are transmitted to the HDMI electronic switching switch chip.

2. The multifunctional KVM expansion dock according to claim 1, wherein: The two groups of USB3.0 signal differential pairs of the TYPE C ports are respectively given to the multiplexing switch chip ASW3410. The multiplexing switch chip ASW3410 controls the switching channels through the MCU chip. The channels include channel A and channel B.

3. The multifunctional KVM expansion dock according to claim 2, wherein: The USB2.0 signals of the two groups of TYPE C ports are transmitted to the analog switch chip BL1532, and the analog switch chip BL1532 transmits the USB2.0 signals to the USB HUB chip RM1211. The four output ports of the USB HUB chip RM1211 are connected to the USB A socket to realize the switching of the external keyboard and mouse.

4. The multifunctional KVM expansion dock according to claim 3, wherein: The CC pins of the two groups of TYPE C ports are electrically connected to the common end of the analog switch chip BL1532. The CC pins of the TYPE C to HDMI chip are electrically connected to the port A end and the port B end respectively. The switching control pin of the analog switch chip BL1532 is connected to the MCU pin.

5. The multifunctional KVM expansion dock according to claim 1, wherein: The MCU chip is electrically connected to a touch button.

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