Self-adaptive switching circuit and display equipment

Abstract

The utility model provides a self-adaptive switching circuit and a display device. The self-adaptive switching circuit comprises a peripheral connection circuit and a host selection circuit. The peripheral connecting circuit is connected with a control circuit of the display equipment and is used for being connected with external input equipment; and the host selection circuit is respectively connected with the peripheral connection circuit and the control circuit and is used for being connected with a plurality of different hosts. According to the utility model, the operation of switching the hosts can be simplified, and the number of connected hosts can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and in particular to an adaptive switching circuit and a display device. Background Art

[0002] With technological advancements, the need to connect a single display device to multiple hosts is increasing. A KVM device is a device that allows a keyboard, mouse, and monitor to control a specific host according to user needs. Currently, most KVM devices can only connect to two hosts, and switching between hosts is cumbersome. Utility Model Content

[0003] The utility model provides an adaptive switching circuit and a display device, aiming to solve the problems that the number of hosts that can be connected to the current KVM device is small and the switching is complicated.

[0004] In a first aspect, the utility model provides an adaptive switching circuit, which is applied to a display device, and the adaptive switching circuit includes a peripheral connection circuit and a host selection circuit; the peripheral connection circuit is connected to the control circuit of the display device and is used to connect to an external input device; the host selection circuit is respectively connected to the peripheral connection circuit and the control circuit, and is used to connect to multiple different hosts.

[0005] Furthermore, the host selection circuit includes a first gating chip and a second gating chip; the first gating chip and the second gating chip are respectively connected to the peripheral connection circuit and the control circuit, and the first gating chip and the second gating chip are also connected to the host.

[0006] Furthermore, the first gating chip and the second gating chip each include a first control signal receiving pin and a second control signal receiving pin, and the first control signal receiving pin and the second control signal receiving pin are both connected to the control circuit.

[0007] Furthermore, the first selection chip includes a data transmission pin, and the data transmission pin is used to connect to the host.

[0008] Furthermore, the second gating chip includes a signal connection pin, and the signal connection pin is used to connect to the host.

[0009] Furthermore, the host selection circuit further includes a host connector, and the host connector is connected to the first gating chip, the second gating chip and the host respectively.

[0010] Furthermore, the peripheral connection circuit includes a hub controller; the hub controller is connected to the first gating chip and the second gating chip respectively.

[0011] Furthermore, the peripheral connection circuit further includes a USB connector, and the USB connector is connected to the hub and the external input device respectively.

[0012] Furthermore, the peripheral connection circuit also includes a current limiting circuit, and the current limiting resistor is connected to the hub controller.

[0013] In a second aspect, the present invention further provides a display device, comprising a control circuit and any one of the above-mentioned adaptive switching circuits.

[0014] The display device disclosed in the present utility model includes an adaptive switching circuit, which includes a peripheral connection circuit and a host selection circuit. The peripheral connection circuit is connected to an external input device, such as a mouse and a keyboard. The host selection circuit is connected to a control circuit and the peripheral connection circuit. The control circuit can output a control signal to control the host to which the host selection circuit is connected. The peripheral connection circuit automatically switches to connect to the corresponding host, thereby simplifying the switching operation. At the same time, the host selection circuit can be connected to two or more hosts, thereby increasing the number of connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 1 is a block diagram of an adaptive switching circuit provided by an embodiment of the present invention;

[0017] Figure 2 This is a circuit diagram of a first gating chip provided by an embodiment of the present utility model;

[0018] Figure 3 This is a circuit diagram of a second gating chip provided by an embodiment of the present utility model;

[0019] Figure 4 This is a circuit diagram of a USB connector provided by an embodiment of the present utility model;

[0020] Figure 5 This is a circuit diagram of a USB connector provided by another embodiment of the present utility model;

[0021] Figure 6This is a circuit diagram of a host connector provided by an embodiment of the present utility model;

[0022] Figure 7 This is a circuit diagram of a current limiting circuit provided in one embodiment of the present utility model. DETAILED DESCRIPTION

[0023] 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 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.

[0024] It will be understood that when used in this specification and the appended claims, the terms “include” and “comprising” indicate the presence of described features, integers, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.

[0025] It should also be understood that the terms used in this utility model specification are for the purpose of describing specific embodiments only and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this utility model specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.

[0026] Furthermore, directional terms used in this disclosure, such as "up," "down," "front," "back," "left," "right," "inside," "outside," and "side," refer only to the accompanying drawings and the orientation of the product in use. Therefore, these directional terms are intended to illustrate and facilitate understanding of this disclosure and are not intended to limit this disclosure. Furthermore, in the accompanying drawings, similar or identical structures are denoted by the same reference numerals.

[0027] See also Figures 1 to 7 , Figure 1 1 is a block diagram of an adaptive switching circuit 100 provided in one embodiment of the present invention; Figure 2 This is a circuit diagram of a first gating chip U1 provided in one embodiment of the present utility model; Figure 3 This is a circuit diagram of a second gating chip U2 provided in one embodiment of the present invention; Figure 4 This is a circuit diagram of a USB connector provided by an embodiment of the present utility model; Figure 5This is a circuit diagram of a USB connector provided by another embodiment of the present utility model; Figure 6 This is a circuit diagram of a host connector provided by an embodiment of the present utility model;

[0028] Figure 7 This is a circuit diagram of a current limiting circuit provided by an embodiment of the present utility model. Figure 1 As shown, the adaptive switching circuit 100 includes a peripheral connection circuit 10 and a host selection circuit 20; the peripheral connection circuit 10 is connected to the control circuit 200 of the display device and is used to connect to an external input device 300; the host selection circuit 20 is respectively connected to the peripheral connection circuit 10 and the control circuit 200, and is used to connect to multiple different hosts 400.

[0029] Specifically, the display device may include a control circuit 200 and an adaptive switching circuit 100. The control circuit 200 may include an MCU for controlling the normal operation of the display device. At the same time, the MCU is also used to control the adaptive switching circuit 100 to switch the connected host 400.

[0030] The adaptive switching circuit 100 may include a peripheral connection circuit 10 and a host selection circuit 20. The peripheral connection circuit 10 is used to connect to an external input device 300, which may be a keyboard, mouse, or other device. The peripheral connection circuit 10 is also connected to the host selection circuit 20 and is used to follow the host selection circuit 20.

[0031] The host selection circuit 20 is connected to multiple hosts 400 , for example, it can be connected to four hosts 400 . At the same time, the host selection circuit 20 is also connected to the control circuit 200 . The control circuit 200 can control the host 400 connected to the host selection circuit 20 through a control signal.

[0032] In actual use, the user can switch the host 400 to be connected through the control button on the display device, and the control circuit 200 sends a corresponding control signal to the host selection circuit 20, so that the host selection circuit 20 switches to the host 400 that matches the control signal. At the same time, the peripheral connection circuit 10 follows the host selection circuit 20 to switch, thereby completing the switching of the host 400.

[0033] See also Figure 2 and Figure 3 As a further embodiment, the host selection circuit 20 includes a first gating chip U1 and a second gating chip U2; the first gating chip U1 and the second gating chip U2 are respectively connected to the peripheral connection circuit 10 and the control circuit 200, and the first gating chip U1 and the second gating chip U2 are also connected to the host 400.

[0034] Among them, the first gating chip U1 and the second gating chip U2 are respectively connected to the control circuit 200, the peripheral connection circuit 10 and the host 400. The first gating chip U1 can include a 2-way differential ultra-high-speed signal four-to-one analog switch for switching between four differential signals such as USB 3.0 SuperSpeed, PCIe Gen1 / 2, SATA / SAS 1.5G / 3G, and DisplayPort. The second gating chip U2 can include a 2-way differential high-speed signal four-to-one analog switch for switching between four differential signals such as USB 2.0 HighSpeed, SATA / SAS 1.5G, and DisplayPort.

[0035] As a further embodiment, the first gating chip U1 and the second gating chip U2 both include a first control signal receiving pin and a second control signal receiving pin, and the first control signal receiving pin and the second control signal receiving pin are both connected to the control circuit 200 .

[0036] Among them, such as Figure 2 As shown, the SEL1 and SEL0 pins of the first gating chip U1 are connected to the control circuit 200 as the first control signal receiving pin and the second control signal receiving pin, respectively. Figure 3 As shown, AS0 and AS1 of the second gating chip U2 are connected to the control circuit 200 as the first control signal receiving pin and the second control signal receiving pin respectively. The control circuit 200 controls the first gating chip U1 and the second gating chip U2 through high and low levels to switch the host 400 connected to them. For example, the MCU of the control circuit 200 may include an AS0 pin and an AS1 pin, and the first gating chip U1 and the second gating chip U2 are connected to four hosts 400. When the AS0 pin and the AS1 pin of the MCU both output a low level, the first gating chip U1 and the second gating chip U2 are connected to the first host 400. When the AS0 pin of the MCU outputs a low level and the AS1 pin outputs a high level, the first gating chip U1 and the second gating chip U2 are connected to the second host 400. When the AS pin of the MCU outputs a high level and the AS1 pin outputs a low level, the first gating chip U1 and the second gating chip U2 are connected to the third host 400. When the AS0 pin and the AS1 pin of the MCU both output a high level, the first gating chip U1 and the second gating chip U2 are connected to the fourth host 400.

[0037] As a further embodiment, the first gating chip U1 includes a data transmission pin, and the data transmission pin is used to connect to the host 400 .

[0038] Among them, such as Figure 2As shown, Figure 2 The PC1 RX P pin to the PC4 RX P pin, the PC1 RX N pin to the PC4 RXN pin, the PC1 TX P pin to the PC4 TX P pin, and the PC1 TXN pin to the PC4 TX N pin are all data transmission pins used to connect to different hosts 400. Among them, PC1 indicates connection with the first host 400, PC2 indicates connection with the second host 400, PC3 indicates connection with the third host 400, and PC4 indicates connection with the fourth host 400.

[0039] In actual use, the four hosts 400 are connected to the first gating chip U1 through corresponding pins. The first gating chip U1 selects a matching host 400 to connect to according to the received control signal.

[0040] As a further embodiment, the second gating chip U2 includes a signal connection pin, and the signal connection pin is used to connect to the host 400.

[0041] Among them, such as Figure 3 As shown, Figure 3 PC1 AP to PC4AP and PC1 AN to PC4AN are signal connection pins, wherein PC1 indicates connection with the first host 400, PC2 indicates connection with the second host 400, PC3 indicates connection with the third host 400, and PC4 indicates connection with the fourth host 400.

[0042] See also Figure 6 As a further embodiment, the host selection circuit 20 further includes a host connector, and the host connector is connected to the first gating chip U1, the second gating chip U2 and the host 400 respectively.

[0043] The host connector is used to connect the first gating chip U1 and the host 400 and the second gating chip U2 and the host 400 respectively. Figure 6 As shown, Figure 6 PC2AN and PC2AP are used for connecting the corresponding pins of the second strobe chip U2, and PC2TX N, PC2 TX P, PC2 RX N and PC2 RX P are used for connecting the corresponding pins of the first strobe chip U1.

[0044] As a further embodiment, the peripheral connection circuit 10 includes a hub controller; the hub controller is connected to the first gating chip U1 and the second gating chip U2 respectively.

[0045] The hub controller may be a control chip including a plurality of pins, and the plurality of pins are used to connect with the first gating chip U1 and the second gating chip U2.

[0046] See also Figure 4 and Figure 5 As a further embodiment, the peripheral connection circuit 10 further includes a USB connector, and the USB connector is connected to the hub and the external input device 300 respectively.

[0047] in, Figure 4 and Figure 5 Each is an embodiment of a USB connector, Figure 4 For ordinary USB connector, Figure 5 It is a double-layer USB connector, which is connected to the hub controller through corresponding pins. At the same time, the USB connector is also connected to the external input device 300.

[0048] See also Figure 7 As a further embodiment, the peripheral connection circuit 10 further includes a current limiting circuit, and the current limiting resistor is connected to the hub controller.

[0049] in, Figure 7 PWRENJ is connected to the hub controller for current limiting protection to protect the safety of the hub controller.

[0050] The present invention also provides a display device, which includes a control circuit 200 and an adaptive switching circuit 100 according to any one of the above embodiments; the adaptive switching circuit 100 includes a peripheral connection circuit 10 and a host selection circuit 20; the peripheral connection circuit 10 is connected to the control circuit 200 of the display device and is used to connect to an external input device 300; the host selection circuit 20 is respectively connected to the peripheral connection circuit 10 and the control circuit 200 and is used to connect to multiple different hosts 400.

[0051] Specifically, the display device may include a control circuit 200 and an adaptive switching circuit 100. The control circuit 200 may include an MCU for controlling the normal operation of the display device. At the same time, the MCU is also used to control the adaptive switching circuit 100 to switch the connected host 400.

[0052] The adaptive switching circuit 100 may include a peripheral connection circuit 10 and a host selection circuit 20. The peripheral connection circuit 10 is used to connect to an external input device 300, which may be a keyboard, mouse, or other device. The peripheral connection circuit 10 is also connected to the host selection circuit 20 and is used to follow the host selection circuit 20.

[0053] The host selection circuit 20 is connected to multiple hosts 400 , for example, it can be connected to four hosts 400 . At the same time, the host selection circuit 20 is also connected to the control circuit 200 . The control circuit 200 can control the host 400 connected to the host selection circuit 20 through a control signal.

[0054] In actual use, the user can switch the host 400 to be connected through the control button on the display device, and the control circuit 200 sends a corresponding control signal to the host selection circuit 20, so that the host selection circuit 20 switches to the host 400 that matches the control signal. At the same time, the peripheral connection circuit 10 follows the host selection circuit 20 to switch, thereby completing the switching of the host 400.

[0055] The adaptive switching circuit and display device disclosed by the present invention are connected to an external input device through a peripheral connection circuit and to multiple hosts through a host selection circuit. The host to which the host selection circuit is connected can be controlled by a control circuit, and the peripheral connection circuit follows the connection, thereby simplifying the operation during switching and increasing the number of hosts that can be connected.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An adaptive switching circuit, characterized in that: Applied to a display device, the adaptive switching circuit includes: a peripheral connection circuit, the peripheral connection circuit being connected to the control circuit of the display device and being used to connect to an external input device; a host selection circuit, the host selection circuit being connected to the peripheral connection circuit and the control circuit respectively, and being configured to connect to a plurality of different hosts; Wherein, the host selection circuit includes a first gating chip and a second gating chip; The first gating chip and the second gating chip are respectively connected to the peripheral connection circuit and the control circuit, and the first gating chip and the second gating chip are also connected to the host.

2. The adaptive switching circuit according to claim 1, wherein: The first gating chip and the second gating chip each include a first control signal receiving pin and a second control signal receiving pin, and the first control signal receiving pin and the second control signal receiving pin are both connected to the control circuit.

3. The adaptive switching circuit according to claim 1, wherein: The first selection chip includes a data transmission pin, and the data transmission pin is used to connect to the host.

4. The adaptive switching circuit according to claim 3, wherein: The second gating chip includes a signal connection pin, and the signal connection pin is used to connect to the host.

5. The adaptive switching circuit according to claim 1, wherein: The host selection circuit further includes a host connector, and the host connector is connected to the first gating chip, the second gating chip and the host respectively.

6. The adaptive switching circuit according to claim 1, wherein: The peripheral connection circuit includes a hub controller; The hub controller is connected to the first gating chip and the second gating chip respectively.

7. The adaptive switching circuit according to claim 6, wherein: The peripheral connection circuit further includes a USB connector, and the USB connector is connected to the hub and the external input device respectively.

8. The adaptive switching circuit according to claim 6, wherein: The peripheral connection circuit further includes a current limiting circuit, and the current limiting circuit is connected to the hub controller.

9. A display device, characterized in that: The method comprises a control circuit and the adaptive switching circuit according to any one of claims 1 to 8.

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