TWM541598U - KVM switch device - Google Patents

Abstract

Provided herein are a KVM switch device. The KVM switch device include at least one first transmission port, a plurality of second transmission ports, a KVM switching unit and a control unit. The first transmission port and the second transmission port include a USB port respectively. The control unit controls the operation of the KVM switch device according to a switching signal, where the switching signal is generated by the control unit or received from the USB port of the first transmission port and/or the second transmission port. When a plurality of KVM switches are connected in series with each other by the first transmission ports and/or the second transmission ports, the signal received by one of the second transmission port of one of the KVM switch can be transmitted to one of the first transmission port of one of the KVM switch through these KVM switches in sequence. Accordingly, the present invention can solve the problem that single switch can be connected to the limited number of electronic devices.

Description

Computer switcher

The present invention relates to a computer switcher, and more particularly to a computer switcher adapted to switch one of a plurality of second electronic devices to a first electronic device.

As the use of computer products tends to be diversified, more and more users often use switchers to meet more demanding needs, depending on the needs and operational considerations. Therefore, there are many products on the market that can connect multiple computer devices, peripheral devices, and display devices.

However, the number of computer devices that can be connected by a conventional switch is fixed, so that a user can only connect a certain number of computer devices when using a conventional switch, and the application and manner of the conventional switch are limited. .

For example, when a user uses a pair of four computer switches, four computer devices can be connected to a set of keyboards, mice, and displays, and a computer connected to the keyboard, mouse, and display can be selected by operating a computer switcher. Device. However, when connecting more computer devices, the user can only re-purchase the switch that can connect more devices.

However, even if a switch that can connect more devices is re-purchased, the number of devices that a switch can connect to is still limited, thereby causing limitations in use. Therefore, the conventional switcher still has a lot of room for improvement in connecting a plurality of devices.

The present invention provides a computer switcher for switching one of a plurality of second electronic devices to be connected to at least one first electronic device, comprising: at least one first transmission port, wherein the first transmission port has an image signal output and a universal serial bus (USB), an image signal output port and a data transmission channel; a plurality of second transmission ports, wherein the second transmission port has an image signal input port and a universal serial bus (USB), image signal The input port has a data transmission channel, and the first transmission port is connected to the second transmission port of the first electronic device or another computer switch, and the first transmission port is configured to output the image signal to the first electronic device through the image signal output or Another computer switcher transmits data through the universal serial bus (USB) to the first electronic device or another computer switch, and the second transfer port is used to connect the first electronic device or the first switch of the other computer switch. The second transmission port is configured to receive an image signal output by the second electronic device through an image signal input or receive an image signal output by another computer switcher. Or transmitting data through a universal serial bus (USB) and a second electronic device or another computer switch; a signal switching unit coupled to the first transmission port and the second transmission port, the signal switching unit according to a control signal Selecting one of the second transmission ports to be connected to one of the first transmission ports to transmit the image signal received by one of the second transmission ports to the first transmission The image signal output of one of the 埠, or the universal serial bus (USB) of one of the second transmission ports and the universal serial bus (USB) of one of the first transmission ports And a control unit coupled to the signal switching unit and the control unit, the control unit directly generating the control signal or the control signal received according to the universal serial bus (USB) to control the switching operation of the signal switching unit; Control unit of one of the computer switches when the computer switches are connected in series with each of the first transmission ports and/or the second transmission ports The control signals are transmitted, and the control signals are transmitted to the other computer switches through the universal serial bus (USB), so that the image signals of one of the second transmission ports of one of the computer switches are input. The video signals are sequentially transferred to these computers through these computer switches. The image signal output of one of the first transmission ports of one of the devices, or the data signal received by the universal serial bus (USB) of one of the second transmission ports of one of the computer switches The serial transmission bus (USB) of one of the first transmission ports of one of the computer switches is transmitted through the computer switches, or one of the first switches of the computer switches is first transmitted The data signals received by the universal serial bus (USB) are sequentially transmitted through these computer switches to the universal serial bus (USB) of one of the second transmission ports of one of the computer switches.

The specific means of the computer switcher of the present invention is to transmit a control signal through a universal serial bus (USB) to achieve the purpose of connecting a plurality of second electronic devices and at least one first electronic device. This allows, for example, a set of keyboard devices, mice and/or displays to be connected to multiple computer devices. Therefore, the problem that the number of electronic devices that can be connected to a single computer switcher is limited is solved.

The above summary and the following examples are intended to further illustrate the technical means and the efficiencies of the present invention, and the embodiments and drawings are merely provided for reference and are not intended to limit the present invention.

40‧‧‧Computer Switching System

41‧‧‧Computer Switcher

411‧‧‧Second transmission

4111‧‧‧Image signal input埠

4113‧‧‧General Sequence Bus

412‧‧‧Signal switching unit

413‧‧‧Second transmission

4131‧‧‧Image signal input埠

4133‧‧‧Common sequence bus

414‧‧‧Control unit

415‧‧‧First transmission埠

4151‧‧‧Image signal output埠

4153‧‧‧Common sequence bus

417‧‧‧Control

419‧‧‧Control interface

43‧‧‧Computer Switcher

431‧‧‧Second transmission

4311‧‧‧Image signal input埠

4313‧‧‧Common sequence bus

433‧‧‧ a second transmission

4331‧‧‧Image signal input埠

4333‧‧‧Common sequence bus

435‧‧‧First transmission埠

4351‧‧‧Image signal output埠

4353‧‧‧Common sequence bus

437‧‧‧Control

45‧‧‧Computer Switcher

451‧‧‧Second transmission

4511‧‧‧Image signal input埠

4513‧‧‧Universal Sequence Bus

453‧‧‧Second transmission

4531‧‧‧Image signal input埠

4533‧‧‧Common sequence bus

455‧‧‧First transmission

4551‧‧‧Image signal output埠

4553‧‧‧Universal Sequence Bus

457‧‧‧Control

51‧‧‧Second electronic device

52‧‧‧Second electronic device

53‧‧‧Second electronic device

54‧‧‧Second electronic device

55‧‧‧Second electronic device

57‧‧‧Second electronic device

61‧‧‧First electronic device

62‧‧‧First electronic device

63‧‧‧Control device

1 is a functional block diagram of an embodiment of the computer switcher of the present invention.

2 is a schematic diagram of an embodiment of the computer switcher of the present invention.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this description will be thorough and complete, and the scope of the inventive concept will be fully conveyed to those skilled in the art. In the figures, like numerals are used to indicate like elements.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements or signals, etc., such elements or signals are not limited by such terms. These terms are used to distinguish one element from another, or a signal and another. In addition, as used herein, the term "or" may include all combinations of any one or more of the associated listed items.

Please refer to FIG. 1. FIG. 1 is a functional block diagram of an embodiment of the computer switch. As shown in the figure, the computer switch 41 includes a second transmission port 411, a second transmission port 413, a first transmission port 415, a control port 417, a control unit 414, a signal switching unit 412, and a control interface. 419. The first transmission port 415 has an image signal output port 4151 and a universal sequence bus bar 4153. The second transmission port 411 has an image signal input port 4111 and a general sequence bus bar 4113. The second transmission port 413 has an image signal input port 4131 and a general sequence bus bar 4133. The signal switching unit 412 is coupled to the first transmission port 415 and the second transmission ports 411 and 413. The control unit 414 is coupled to the signal switching unit 412, the control unit 417, and the control interface 419.

In this embodiment, the image signal input port 4111 of the second transmission port 411, the image signal input port 4131 of the second transmission port 413, and the image signal output port 4151 of the first transmission port 415 can be, for example, a high-definition multimedia interface ( HDMI), a digital video interface (DisplayPort), a video graphics array (VGA), a digital video interface (DVI) or a motion picture quality interface (MHL), but not limited.

In this embodiment, the user can operate the control interface 419 to cause the control unit 414 to directly generate a control signal (not shown). The signal switching unit 412 selects one of the second transmission port 411 and the second transmission port 413 to be connected to the first transmission port 415 according to the control signal, so that the image signal of the second transmission port 411 is input to the 4111, the second transmission. The image signal received by one of the image signal input ports 413 of 埠413 is transmitted to the image signal output port 4151 of the first transmission port 415, or the universal sequence bus bar 4113 and the second transmission port 413 of the second transmission port 411 are used. The data signal received by one of the universal sequence bus 4133 is transmitted to the first The general sequence bus 4153 of the transmission port 415, or the data signal received by the universal sequence bus 4153 of the first transmission port 415 is transmitted to the universal sequence bus 4113 and the second transmission port 413 of the second transmission port 411. One of the sequence bus 4133, for the purpose of controlling the signal.

In the embodiment, a first electronic device 62 is connected to the first transmission port 415, a second electronic device 52 is connected to the second transmission port 411, and a second electronic device 54 is connected to the second transmission device 413. In this embodiment, the second electronic devices 52 and 54 can be, for example, a computer device. The first electronic device 62 can be, for example, a set of a mouse, a keyboard, and a display device, but is not limited thereto. The second transmission port 411 is connected to the second electronic device 52 (computer device) by the image signal input port 4111 and the universal sequence bus bar 4113, and the second transmission port 413 is connected by the image signal input port 4131 and the universal sequence bus bar 4133. The second electronic device 54 (computer device), the first transmission port 415 is connected to the display device in the first electronic device 62 by the image signal output port 4151, and the first transmission port 415 is connected to the first electronic device by the universal sequence bus bar 4153. Mouse and keyboard in 62.

For example, when the image signal or the data signal generated by the second electronic device 52 is transmitted to the first electronic device 62, the user can operate the control interface 419 to cause the control unit 414 to directly generate a control signal, so that the signal switching unit 412 can The control signal selection second transmission port 411 is connected to the first transmission port 415. The second electronic device 52 is thus connected to the first electronic device 62 by control of the control signal. The image signal or data signal of the second electronic device 52 (computer device) is transmitted to the first electronic device 62 (mouse, keyboard and display device), and the data signal of the first electronic device 62 can be transmitted through the universal serial bus 4153 is transmitted to the second electronic device 52 (computer device) for the purpose.

For example, when the image signal or the data signal generated by the second electronic device 54 is transmitted to the first electronic device 62, the user can operate the control interface 419 to cause the control unit 414 to directly generate a control signal, so that the signal switching unit 412 can The control signal selection second transmission port 413 is connected to the first transmission port 415. Control message The control of the number causes the second electronic device 54 to be connected to the first electronic device 62. The image signal or data signal of the second electronic device 54 (computer device) is transmitted to the first electronic device 62 (mouse, keyboard and display device), and the data signal of the first electronic device 62 can be transmitted through the universal serial bus 4153 is transmitted to the second electronic device 54 (computer device) for the purpose.

Please refer to FIG. 2 and refer to FIG. 1 at the same time. FIG. 2 is a schematic diagram of an embodiment of the computer switch. As shown, the computer switching system 40 includes computer switches 41, 43, and 45, second electronic devices 51, 53, 55, and 57, a first electronic device 61, and a control device 63. The computer switch 41 has a second transmission port 411, a second transmission port 413, a first transmission port 415, and a control port 417. The first transmission port 415 has an image signal output port 4151 and a universal sequence bus bar 4153. The second transmission port 411 has an image signal input port 4111 and a universal sequence bus bar 4113. The second transmission port 413 has an image signal input.埠 4131 and a universal sequence bus 4133. The computer switcher 43 has a second transmission port 431, a second transmission port 433, a first transmission port 435, and a control port 437. The first transmission port 435 has an image signal output port 4351 and a universal sequence bus bar 4353. The second transmission port 431 has an image signal input port 4311 and a universal sequence bus bar 4313. The second transmission port 433 has an image signal input.埠 4331 and a universal sequence bus 4333. The computer switcher 45 has a second transmission port 451, a second transmission port 453, a first transmission port 455, and a control port 457. The first transmission port 455 has an image signal output port 4551 and a universal sequence bus bar 4553. The second transmission port 451 has an image signal input port 4511 and a universal sequence bus bar 4513. The second transmission port 453 has an image signal input.埠 4531 and a universal sequence bus 4533.

The computer switches 43 and 45 have similar structures and functions to those of the computer switch 41 shown in FIG. 1, and the detailed structure thereof is not described herein. In the present embodiment, the second electronic devices 51, 53, 55, and 57 are exemplified by a computer device. The first electronic device 61 is exemplified by a group of a mouse, a keyboard, and a display device.

The second transmission port 411 of the computer switch 41 is connected to the computer switch 43. The first transmission port 435 is connected to the first transmission port 455 of the computer switch 45, and the first transmission port 415 is connected to the first electronic device 61. The second transmission port 431 of the computer switcher 43 is connected to the second electronic device 51, and the second transmission port 433 is connected to the second electronic device 53. The second transfer port 451 of the computer switch 45 is connected to the second electronic device 55, and the second transfer port 453 is connected to the second electronic device 57.

The computer switcher 41, 43 and 45 can select one of the second transmission ports to connect with the first transmission port according to a control signal. The control signal can be generated by the control unit of any one of the computer switches 41, 43 and 45, and is used by the first transmission port of the computer switches 41, 43 and 45 and/or the second transmission port. A serial bus (USB) is transmitted to each computer switcher. Thereby, the purpose of connecting one of the second electronic devices 51, 53, 55 and 57 to the first electronic device 61 can be achieved by the setting of the control signal.

For example, when the image signal or the data signal of the second electronic device 55 is to be transmitted to the first electronic device 61, the user can operate, for example, the control interface of the computer switcher 43 (not shown) to make the computer switch 43 The control unit (not shown) generates a control signal and transmits it to the universal sequence bus 4113 of the second transmission port 411 of the computer switch 41 through the universal sequence bus 3353 of the first transmission port 435. The computer switch 41 And transmitting the control signal to the universal sequence bus 4553 of the first transmission port 455 of the computer switch 45 through the universal sequence bus 4133 of the second transmission port 413. The computer switch 45 is caused to select its second transmission port 451 to be connected to the first transmission port 455 according to the control signal, and causes the computer switcher 41 to select its second transmission port 413 to be connected to the first transmission port 415 according to the control signal. The second electronic device 55 is thus connected to the first electronic device 61 by the control of the control signal. The image signal or data signal of the second electronic device 55 (computer device) is transmitted to the first electronic device 61 (mouse, keyboard and display device), and the data signal of the first electronic device 61 can be transmitted through the universal serial bus The purpose of transmission to the second electronic device 55 (computer device).

Therefore, the computer switcher of the present invention transmits a control signal through a universal serial bus (USB), so that the computer switches 41, 43 and 45 are connected to each other in parallel. A plurality of second electronic devices 51, 53, 55, and 57 are connected to a first electronic device 61 for switching purposes. Thereby solving the problem that the number of electronic devices that a single switch can be connected is limited.

In an embodiment of the present invention, the control ports 417, 437, and 457 of the computer switches 41, 43, and 45 may be, for example, an RS-232 port or a local area network port, but the present invention is not limited thereto. The control unit 63 of the computer switching system 40 can select the control ports 417, 437, 457 connected to one of the computer switches 41, 43, and 45, and the control signals can be generated by the control unit 63. The control unit 63 transmits a control signal to the connected switch via an RS-232 port or a regional network port. Then, the control signal is transmitted to each computer switcher in the computer switching system 40 via the first transmission port of each computer switch and/or the universal serial bus (USB) of the second transmission port to achieve the second electronic device. One of 51, 53, 55, and 57 is connected to the purpose of the first electronic device 61.

In the embodiment shown in FIG. 2, control device 63 is exemplified by a control port 437 that is selectively coupled to computer switch 43. For example, when the image signal or the data signal of the second electronic device 51 is to be transmitted to the first electronic device 61, the user can operate the control device 63 to generate a control signal and transmit it to the computer switch 43. The computer switcher 43 can transmit the control signal to the computer switch 41 through the universal sequence bus 4353 of the first transmission port 435 after receiving the control signal. The computer switcher 41 can transmit the control signal to the computer switch 45 through the universal sequence bus 4133 of the second transmission port 413 after receiving the control signal. Therefore, the control signal is transmitted to each of the computer switching systems 40 through the universal serial bus (USB), so that the signal switching unit of the computer switcher 43 selects the second transmission port 431 and the first transmission port according to the control signal. The connection 435 is connected, and the signal switching unit 412 of the computer switcher 41 is connected to the first transmission port 415 according to the control signal. The second electronic device 51 is thus connected to the first electronic device 61 by the control of the control signal. Reaching the image signal or data signal of the second electronic device 51 (computer device) to the first electronic device 61 (mouse, keyboard and display device), and The data signal of the first electronic device 61 is transmitted to the second electronic device 51 (computer device) through the universal serial bus. Thereby solving the problem that the number of electronic devices that a single switch can be connected is limited.

In an embodiment of the present invention, the control units of the KVM switches 41, 43 and 45 have an encoder (not shown), each encoder having an encoding. The encoder can be implemented, for example, by a memory encoder or a switch encoder. The present invention is not limited thereto. The control unit 63 or the control unit of one of the computer switches 41, 43 and 45 generates a control signal according to the code of each computer switch to generate an image signal or a data signal of one of the second electronic devices when generating the control signal. The data is transmitted to the first electronic device through the computer switches in sequence, or the data signals of the first electronic device are sequentially transmitted to the second electronic device through the computer switches.

In an embodiment of the present invention, the encoder of the control unit of the computer switches 41, 43 and 45 is a switch encoder, and the user can operate the switch encoder to encode each computer switch. For example, the code given to the computer switch 41 is 1, the code of the computer switch 43 is 2, and the code of the computer switch 45 is 3. When, for example, the data of the second electronic device 53 is to be transmitted to the first electronic device 61, the control unit 63 or the control unit of one of the computer switches 41, 43 and 45 generates a "switch of code 2 to select the first The second transmission port 433 is connected to the first transmission port 435, and the switcher coded 1 selects the control signal of the second transmission port 411 connected to the first transmission port 415. For example, when the data of the second electronic device 55 is to be transmitted to the first electronic device 61, the control unit 63 or the control unit of one of the computer switches 41, 43 and 45 generates a "switch with a code of 3 to select the first The second transmission port 451 is connected to the first transmission port 455, and the switcher coded 1 selects the control signal of the second transmission port 413 and the first transmission port connection 415".

In an embodiment of the present invention, the encoder of the control unit of the computer switches 41, 43 and 45 is a memory encoder, and the user can operate the control device 63 or the second electronic device 51, 53, 55, 57 thereof. One of or computer switchers 41, 43, 45 One of the control interfaces is to encode a memory encoder for each of the computer switches. The memory encoder can be implemented, for example, by a firmware, but the creation is not limited thereto.

The operation of the control unit is a commonly used technique in the control computing system by those skilled in the art, and details of the operation thereof are not described herein.

In an embodiment of the present invention, the control units of the computer switches 41, 43 and 45 can be implemented by a firmware, and the computer switching system 40 can update the firmware of the control units of the computer switches 41, 43 and 45 through the control signals.

In an embodiment of the present invention, the connection structure between the computer switches 41, 43 and 45 is a Daisy Chain Topology structure, but not limited thereto.

The connection relationship of the computer switch shown in FIG. 2 is merely an example, and the present invention is not limited thereto. In practical applications, a plurality of computer switches may achieve the purpose of switching by arbitrarily connecting their first transmission ports and/or second transmission ports to each other in series.

Therefore, through the technology disclosed in the above disclosure, the computer switcher proposed by the present invention transmits a control signal through a universal serial bus (USB) to achieve connection between a plurality of second electronic devices and at least one first electronic device. purpose. Since the computer switcher of the present invention does not limit the number of switches connected in series, the computer switcher of the present invention can achieve the purpose of connecting any second electronic device to the first electronic device. Thereby solving the problem that the number of electronic devices that a single switch can be connected is limited.

The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of this creation should be covered by this creation.

40‧‧‧Computer Switching System

41‧‧‧Computer Switcher

411‧‧‧Second transmission

4111‧‧‧Image signal input埠

4113‧‧‧General Sequence Bus

413‧‧‧Second transmission

4131‧‧‧Image signal input埠

4133‧‧‧Common sequence bus

415‧‧‧First transmission埠

4151‧‧‧Image signal output埠

4153‧‧‧Common sequence bus

417‧‧‧Control

43‧‧‧Computer Switcher

431‧‧‧Second transmission

4311‧‧‧Image signal input埠

4313‧‧‧Common sequence bus

433‧‧‧ a second transmission

4331‧‧‧Image signal input埠

4333‧‧‧Common sequence bus

435‧‧‧First transmission埠

4351‧‧‧Image signal output埠

4353‧‧‧Common sequence bus

437‧‧‧Control

45‧‧‧Computer Switcher

451‧‧‧Second transmission

4511‧‧‧Image signal input埠

4513‧‧‧Universal Sequence Bus

453‧‧‧Second transmission

4531‧‧‧Image signal input埠

4533‧‧‧Common sequence bus

455‧‧‧First transmission

4551‧‧‧Image signal output埠

4553‧‧‧Universal Sequence Bus

457‧‧‧Control

51‧‧‧Second electronic device

53‧‧‧Second electronic device

55‧‧‧Second electronic device

57‧‧‧Second electronic device

61‧‧‧First electronic device

63‧‧‧Control device

Claims (9)

A computer switcher for switching one of the plurality of second electronic devices to be connected to the at least one first electronic device, comprising: at least one first transmission port, wherein the first transmission port has an image signal output port and a universal a sequence bus (USB), the image signal output port has a data transmission channel; and a plurality of second transmission ports, wherein the second transmission port has an image signal input port and a universal sequence bus bar (USB), the image The signal input channel has a data transmission channel, and the first transmission port is connected to the second transmission port of the first electronic device or another computer switch, and the first transmission port is configured to output an image signal through the image signal output Transferring data to the first electronic device or another computer switch or through the universal serial bus (USB) and the first electronic device or another computer switch, the second transfer device being connected to the second electronic device Or the first transmission port of the other computer switch, the second transmission port is configured to receive the image signal output by the second electronic device through the image signal input or receive another An image signal output by the computer switcher or transmitted through the universal serial bus (USB) and the second electronic device or another computer switch; a signal switching unit coupled to the first transmission port and the plurality of After the second transmission port, the signal switching unit selects one of the second transmission ports to connect with one of the first transmission ports according to a control signal, so that the one of the second transmission ports The image signal received by the image signal input is transmitted to the image signal output port of one of the first transmission ports, or the universal sequence bus (USB) of one of the second transmission ports is Data transmission with the universal serial bus (USB) of one of the first transmission ports; and a control unit coupled to the signal switching unit and the control unit, the control unit directly generating the control signal or according to The universal serial bus (USB) reception The control signal is sent to control the switching operation of the signal switching unit; wherein when the plurality of computer switches respectively connect the first transmission ports and/or the second transmission ports to each other, the computer switches The control unit of one of the devices generates the control signal, and transmits the control signal to the other computer switches through the universal serial bus (USB) to make one of the computer switches The image signal received by the image signal input of the second transmission port is sequentially transmitted to the image signal output of one of the first transmission ports of the one of the computer switches through the computer switch埠, or the data signals received by the universal serial bus (USB) of one of the second switches of the computer switches are sequentially transmitted to the computer switches through the computer switches. The universal serial bus (USB) of one of the first transmission ports, or the universal serial bus of one of the first switch ports of the one of the computer switches (USB) ) Wherein the second transmission port of a one of the received data signals sequentially transmitted through the computers of the computers to switch the switch universal serial bus (USB). The computer switcher of claim 1, wherein the computer switch has a control port, the control device is connected to a control device, and the control device outputs the control signal to the control unit of the computer switch. The computer switcher according to claim 2, wherein the control device is an RS-232 port or a local area network (LAN) port, and the control device is a desktop computer, a notebook computer, At least one of a tablet and a smart phone. The computer switcher of claim 1, wherein the control unit of the computer switch has a memory encoder, the memory encoder having an code for identification by another computer switcher, wherein, when The computer switches are respectively connected to each other with the first transmission port and/or the second transmission ports The control unit of one of the switches generates the control signal according to the codes of the memory encoders. The computer switcher of claim 1, wherein the control unit of the computer switch has a switch encoder, the switch encoder having an code for identification by another computer switch, wherein, when When the computer switcher connects the first transmission ports and/or the second transmission ports to each other in series, the control unit of one of the computer switches generates the control according to the codes of the switch encoders. Signal. The computer switcher according to claim 1, wherein the image signal input port and/or the image signal output port is a high-definition multimedia interface (HDMI), a digital video interface (DisplayPort), and a video graphics array (VGA). ), a digital video interface (DVI) or a mobile high quality link interface (MHL). The computer switcher of claim 1, wherein the control unit is a firmware, and the computer switcher updates the firmware through the control signal. The computer switcher of claim 1, wherein the connection structure between the switches is a Daisy Chain Topology structure. The computer switch of claim 1, wherein the second electronic device is a computer device, and the first electronic device is a keyboard device and/or a mouse.