TWM593583U - A kvm switch of adjusting screen frame - Google Patents

Abstract

The present invention provides a KVM switch of adjusting screen frame, which includes a processing circuit, a picture distributing circuit, a port circuit and a memory circuit. The processing circuit controls the picture distribution circuit to send an image distribution signal to the display device according to a keyboard signal or a mouse signal. The processing circuit decides the image resolution when the first image signal and the second image signal are displayed in the first region and the second region on a display device respectively, so that the first image signal and the second image signal fill the first region and the second region respectively. In addition, it will not cause image deformation.

Description

Multi-computer switching device capable of adjusting picture size

The present invention is to provide a switching device, especially a multi-computer switching device with adjustable screen size.

In general companies now often have the opportunity to use multiple computer switching devices, through a set of keyboard, mouse and screen, you can easily manage multiple computer hosts. However, if users want to understand the status of multiple computer hosts, they often need to switch multiple times, first switch to the target host, and then display the display screen of the target host through the display device. Therefore, users must wait for a period of time before they can monitor the status of each host. The display screen is limited by the resolution of the display device, and usually the display screen cannot be completely filled, so that the information that can be displayed on the display screen is limited, and the user gets some troubles in reading.

The technical problem to be solved by this creation is to provide a multi-computer switching device with adjustable screen size for the deficiencies of the prior art, which is electrically connected to a keyboard, a mouse, a first computer, a second computer and a display device. The multi-computer switching device with adjustable screen size includes a processing circuit, a memory circuit, a screen distribution circuit and a port circuit. The processing circuit is electrically connected to the memory circuit, the picture distribution circuit and the port circuit. The memory circuit stores multiple sets of extended display identification data (EDID). The port circuit includes a first port unit and a second port unit. The processing circuit is electrically connected to the first computer through the first port unit to receive the first image signal and the first control signal sent by the first computer. The processing circuit is electrically connected to the second computer through the second port unit to receive the second image signal and the second control signal sent by the second computer. The processing circuit controls the picture distribution circuit to transmit the image distribution signal to the display device according to the first image signal and the second image signal. The display device displays the first image signal and the second image signal in the first area and the second area according to the image signal, respectively. The processing circuit selectively outputs to one of the first computer and the second computer according to an index input signal of the mouse. The processing circuit determines the first based on multiple sets of extension capability identification information, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the first area, and an area resolution of the second area The image resolution of an image signal and a second image signal when displayed on the first area and the second area on the display device, respectively, so that the first image signal and the second image signal fill the first area and the second area, respectively , And will not cause image distortion.

One of the beneficial effects of this creation is that the multi-computer switching device with adjustable screen size provided by this creation can display the display screens of multiple computer hosts on the same display device through the technical solution of distributing the display screens . It is convenient for users to easily control multiple computer hosts at the same time without having to switch repeatedly.

Another beneficial effect of this creation is that the multi-computer switching device with adjustable screen size provided by this creation can automatically adjust the full version of the display screen, so that the space on the display device can be effectively used. Furthermore, the user's reading comfort is improved.

In order to further understand the characteristics and technical content of this creation, please refer to the following detailed description and drawings of this creation. However, the drawings provided are for reference and explanation only, and are not intended to limit this creation.

The following is a description of the implementation of the "multi-computer switching device with adjustable screen size" disclosed by the present invention through specific specific examples. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. This creation can be implemented or applied through other different specific embodiments. The details in this specification can also be based on different views and applications, and various modifications and changes can be made without departing from the concept of this creation. In addition, the drawings in this creation are only a schematic illustration, not based on actual size, and are declared in advance. The following embodiments will further describe the relevant technical content of the creation, but the disclosed content is not intended to limit the protection scope of the creation.

It should be understood that although terms such as “first”, “second”, and “third” may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" as used herein may include any combination of any one or more of the associated listed items, depending on the actual situation.

[First embodiment]

Referring to FIG. 1, FIG. 1 is a block diagram of a multi-computer switching device with adjustable screen size according to the first embodiment. The first embodiment of the present invention provides a multi-computer switching device 1 with adjustable screen size, electrically connected to a keyboard 11, a mouse 12, a first computer 14, a second computer 16, and a display device 18. The multi-computer switching device 1 with adjustable screen size includes a processing circuit 10, a screen distribution circuit 20, a port circuit 30, and a memory circuit 32. The processing circuit 10 is electrically connected to the picture distribution circuit 20, the port circuit 30, and the memory circuit 32. The port circuit 30 includes a first port unit 301 and a second port unit 302. The processing circuit 10 is electrically connected to the first computer 14 through the first port unit 301 to receive the first image signal and the first control signal sent by the first computer 14. The processing circuit 10 is electrically connected to the second computer 16 through the second port unit 302 to receive the second image signal and the second control signal sent by the second computer 16. The processing circuit 10 controls the screen distribution circuit 20 to transmit the image distribution signal to the display device 18 according to the keyboard signal or the mouse signal. The display device 18 displays the first image signal and the second image signal in the first area 1801 and the second area 1802 according to the image signal, respectively. The processing circuit 10 is selectively output to one of the first computer 14 and the second computer 16 according to the index input signal of the mouse 12. The processing circuit 10 obtains the image resolution of the display device 18 through the image port 34. The processing circuit 10 determines the plurality of sets of extension capability identification information, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the first area, and an area resolution of the second area The image resolution when the first image signal and the second image signal are displayed on the first area 1801 and the second area 1802 on the display device, respectively, so that the first image signal and the second image signal respectively fill the first area 1801 And the second area 1802, and will not cause image distortion.

Furthermore, the first area 1801 and the second area 1802 on the display device 18 each have multi-point coordinates. When the processing circuit 10 in the multi-computer switching device 1 with adjustable screen size tracks the index coordinate of the index 19 in one of the coordinates in the first area 1801, the processing circuit 10 controls the first computer 14 at this time. The user can control the first computer 14 in the first area 1801, and control the first display screen 181 displayed in the first area 1801 through the pointer 19. When the index coordinate of the index 19 moves by a preset distance D1 and moves from the first display screen 181 to the second display screen 182, the processing circuit 10 tracks the index coordinate of the index 19 in one of the coordinates in the second area 182, this The time processing circuit 10 switches and controls the second computer 16. Through trajectory tracking of the index coordinates of the index 19, the processing circuit 10 can determine in which area the index coordinates of the index 19 fall, and switch the target computer to be controlled according to the display screen displayed in the area where the index is located.

Still further, the processing circuit 10 determines that an image resolution of the first image signal and an image resolution of the second image signal are greater or smaller than an area resolution and the second of the first area based on multiple sets of extension capability identification information When an area resolution of an area, the processing circuit 10 adjusts an image resolution of the first image signal and an image resolution of the second image signal to be equal to an area of the first area of the display device 18 according to multiple sets of extension capability identification information The resolution and an area resolution of the second area, so that the first image signal and the second image signal fill the first area 1801 and the second area 1802, respectively, without causing image distortion.

Screen resolution is 640*480, 800*600, 1024*768, 1152*864, HD (1280*720), Full HD (1920*1080), quarter full HD (2560*1440), 4K resolution One of (3840*2160), 5K resolution (5120*2880) or 8K resolution (7680*4320) or a combination thereof. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

Referring to FIGS. 2A and 2B, FIGS. 2A and 2B are schematic diagrams of screen allocation according to the first embodiment of the creation. In one embodiment, the multi-computer switching device 1 with adjustable screen size can adopt a picture-by-picture (PBP) mode, and simultaneously receive the first image signal sent from the first computer 14 and the second computer 16 The second image signal. On the display device 18, the first display screen 181 and the second display screen 182 are displayed side by side. In FIG. 2A, the first display screen 181 and the second display screen 182 are displayed side by side in the first area 1801 and the second area 1802, but are not displayed in full version. In FIG. 2B, the processing circuit 10 recognizes information based on multiple sets of extension capabilities, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the first area, and an area of the second area The area resolution determines the image resolution when the first image signal and the second image signal are displayed on the first area 1801 and the second area 1802 on the display device, respectively, so that the first image signal and the second image signal are filled in The first area 1801 and the second area 1802 are full, and the image is not distorted.

Referring to FIGS. 2C and 2D, FIGS. 2C and 2D are schematic diagrams of screen allocation according to the first embodiment of the creation. In one embodiment, the multi-computer switching device 1 with adjustable screen size can adopt a picture-by-picture (PBP) mode, and simultaneously receive the first image signal sent from the first computer 14 and the second computer 16 The second image signal. On the display device 18, the first display screen 181 and the second display screen 182 are displayed side by side up and down. In FIG. 2C, the first display screen 181 and the second display screen 182 are displayed side by side in the first area 1801 and the second area 1802 side by side, but they are not displayed in full version. In FIG. 2D, the processing circuit 10 recognizes information based on multiple sets of extension capabilities, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the first area, and an The area resolution determines the image resolution when the first image signal and the second image signal are displayed on the first area 1801 and the second area 1802 on the display device, respectively, so that the first image signal and the second image signal are filled in The first area 1801 and the second area 1802 are full, and the image is not distorted.

The display screens in different areas can be replaced in different orders according to the needs of users. For example, the user may change the first area 1801 to display the second display screen 182 and the second area 1802 to display the first display screen 181 due to personal usage habits. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

Referring to FIGS. 2E and 2F, FIGS. 2E and 2F are another schematic diagram of the screen allocation of the first embodiment of the creation. In one embodiment, the multi-computer switching device 1 with adjustable screen size can adopt a side-by-side mode of the screen and simultaneously receive the first image signal sent from the first computer 14 and the second image signal sent by the second computer 16, The third image signal sent by the third computer (not shown) and the fourth image signal sent by the fourth computer (not shown) are simultaneously received. On the display device 18, the first area 1801 displays the first display screen 181, the second area 1802 displays the second display screen 182, the third area 1803 displays the third display screen 183, and the fourth area 1804 displays the fourth display screen 184. In FIG. 2E, the first display screen 181, the second display screen 182, the third display screen 183, and the fourth display screen 184 are displayed side by side in the first area 1801, the second area 1802, the third area 1803, and the fourth area 1804 , But it’s not full. In FIG. 2F, the processing circuit 10 recognizes information based on multiple sets of extension capabilities, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the first area, and an area of the second area The area resolution, the area resolution of the third area, and the area resolution of the fourth area determine the first position of the first image signal, the second image signal, the third image signal, and the fourth image signal on the display device, respectively. The image resolution when the area 1801, the second area 1802, the third area 1803, and the fourth area 1804 are displayed so that the first image signal, the second image signal, the third image signal, and the fourth image signal respectively fill the first An area 1801, a second area 1802, a third area 1803, and a fourth area 1804 will not cause image distortion.

The number of multi-computer switching devices 1 capable of adjusting the size of the screen can simultaneously receive the signal sources of different computer hosts without limitation. Moreover, on the display device 18, the display screens in different areas can be replaced in different orders according to the needs of the user. For example, the user may change the first area 1801 to display the third display screen 183 and the third area 1803 to display the first display screen 181 due to management convenience. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

Referring to FIGS. 2G and 2H, FIGS. 2G and 2H are schematic diagrams of display screen switching in the first embodiment of the creation. In one embodiment, the multi-computer switching device 1 with adjustable screen size can adopt a picture-in-picture (PIP) mode, and simultaneously receive the first image signal sent from the first computer 14 and the second computer 16 The second video signal sent. The first display screen 181 is a full-screen display screen, and the second display screen 182 is embedded in the first display screen 181 and simultaneously displayed on the display device 18. The user controls the second display screen 182 with the keyboard 11 or the mouse 12 and displays it at any position on the first display screen 181. The size of the second display screen 182 can be enlarged or reduced by the keyboard 11 or the mouse 12 according to the user's reading habits. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

In FIG. 2G, the first display screen 181 and the second display screen 182 are displayed in a picture-in-picture mode, but are not displayed in full version. In FIG. 2H, the processing circuit 10 recognizes information based on multiple sets of extension capabilities, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the parent screen, and an area analysis of the sub-screen Degree to determine the image resolution of the first image signal and the second image signal when the parent image and the sub image are displayed on the display device, so that the first image signal and the second image signal fill the parent image and the sub image, respectively , And will not cause image distortion.

Referring to FIGS. 2I and 2J, FIGS. 2I and 2J are another schematic diagram of the display screen switching in the first embodiment of the creation. In one embodiment, the multi-computer switching device 1 with adjustable screen size can adopt a picture-in-picture mode and simultaneously receive the first image signal sent from the first computer 14 and the second image signal sent from the second computer 16. The second display screen 182 is a full-screen display screen, and the first display screen 181 is embedded in the second display screen 182 and displayed on the display device 18 at the same time. The user controls the first display screen 181 with the keyboard 11 or the mouse 12 and displays it at any position on the second display screen 182. The size of the first display screen 181 can be enlarged or reduced by the keyboard 11 or the mouse 12 according to the user's reading habits. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

In FIG. 2I, the first display screen 181 and the second display screen 182 are displayed in a picture-in-picture mode, but are not displayed in full version. In FIG. 2J, the processing circuit 10 recognizes information based on multiple sets of extension capabilities, an image resolution of the first image signal, an image resolution of the second image signal, an area resolution of the parent screen, and an area analysis of the sub-screen Degree to determine the image resolution of the first image signal and the second image signal when the parent image and the sub image are displayed on the display device, so that the first image signal and the second image signal fill the parent image and the sub image, respectively , And will not cause image distortion.

In one embodiment, the processing circuit 10 adjusts the display scale of the multiple display screens according to the screen resolution of the display device 18. The display scale may be one of 4 to 3, 16 to 9, 16 to 10, or 21 to 9 or any combination. However, this creation is not limited to the examples given above.

[Second Embodiment]

Referring to FIG. 3, FIG. 3 is a block diagram of a multi-computer switching device with adjustable screen size for creating a second embodiment. The multi-computer switching device 1a with adjustable screen size further includes a switching interface 36, which is electrically connected to the processing circuit 10. The processing circuit 10 obtains the image resolution of the display device 18 through the image port 34. The processing circuit 10 is electrically connected to the first computer 14 through the first port unit 301 to receive the first image signal sent by the first computer 14. The processing circuit 10 is electrically connected to the second computer 16 through the second port unit 302 to receive the second image signal sent by the second computer 16. The processing circuit 10 selectively outputs the pointer input signal of the mouse 12 to one of the first computer 14 and the second computer 16 according to the switching signal input by the switching interface 36.

Please also refer to Figure 2. For example, the processing circuit 10 continuously detects the position of the coordinate 19 of the pointer 19 of the mouse 12. The processing circuit 10 determines that the coordinate position of the pointer 19 of the mouse 12 is within the first area 1801. When the coordinate 19 of the pointer 12 of the mouse 12 exceeds the first area 1801, the switching interface 36 receives the switching signal output from the processing circuit 10 to determine the index 19 The current position has moved from the first area 1801 to the second area 1802, so the processing circuit 10 outputs the indicator input signal to the second computer 16. If the processing circuit 10 determines that the coordinates of the pointer 19 of the mouse 12 are within the second area 1802, when the coordinates of the pointer 19 of the mouse 12 exceeds the second area 1802, the switching interface 36 receives the switching signal from the processing circuit 10 again. The current position of the judgment indicator 19 is moved from the second region 1802 to the first region 1801, and the processing circuit 10 outputs the indicator input signal to the first computer 14.

The first port unit 301 is a port that conforms to the PS/2 interface or general serial bus 2.0, 3.0, 3.1, 3.2, type C specifications, and the second port unit 302 is a port that conforms to the PS/2 interface or general serial bus Row 2.0, 3.0, 3.1, 3.2, type C specification ports. The display interfaces of the first computer 14, the second computer 16, and the display device 18 are Video Graphics Array (VGA), Digital Visual Interface (DVI), and High Definition Multimedia Interface (High Definition Multimedia Interface, One of HDMI or Display Port (DP) or a combination thereof. However, the example given above is just one of the feasible embodiments and is not intended to limit the creation.

[Third Embodiment]

Referring to FIG. 4, FIG. 4 is a block diagram of a multi-computer switching device with adjustable screen size for creating a third embodiment. The multi-computer switching device 1b with adjustable screen size further includes an on-screen display (OSD) circuit 38, and the on-screen display circuit 38 is electrically connected to the processing circuit 10. The processing circuit 10 is electrically connected to the first computer 14 through the first port unit 301 to receive the first image signal sent by the first computer 14. The processing circuit 10 is electrically connected to the second computer 16 through the second port unit 302 to receive the second image signal sent by the second computer 16. After the user presses the hot key on the keyboard 11, the on-screen display circuit 38 is triggered. The processing circuit 10 detects the area where the coordinates of the pointer 19 of the mouse 12 are located, for example, the pointer 19 is being displayed in the first area 1801, and further adjusts the first image signal of the first computer 14 to conform to the upcoming display on the display device 18 The display requirements of the first area 1801, such as the screen position, size, brightness, sharpness, saturation, etc. The multi-computer switching device 1b with adjustable screen size transmits the adjusted first image signal to the display device 18 through the screen display circuit 38.

Please also refer to Figure 2. The processing circuit 10 sends an adjustment signal to the screen display circuit 38. The processing circuit 10 first detects the area where the coordinates of the pointer 19 of the mouse 12 are located, and sends a confirmation signal to the screen display circuit 38. The screen display circuit 38 adjusts the screen display of the area where the coordinates of the indicator 19 are located according to the obtained confirmation signal. For example, when the user operates the keyboard 11 to adjust the brightness of the first area 1801, the user presses the hot key on the keyboard 11 to trigger the on-screen display circuit 38. The processing circuit 10 sends a communication signal to the screen display circuit 38. The processing circuit 10 first detects the coordinates 19 of the mouse 12 in the first area 1801, confirms that the first computer 14 is in the first area 1801, and sends a confirmation signal to the screen display circuit 38. The screen display circuit 38 adjusts the brightness of the first area 1801 according to the obtained confirmation signal. Similarly, the brightness of the second area 1802 can also be adjusted according to the above method. The above-mentioned partition adjustment of the brightness of the display device 18 is only one feasible embodiment and is not intended to limit the creation.

[Fourth embodiment]

Referring to FIG. 5, FIG. 5 is a block diagram of a multi-computer switching device with adjustable screen size according to a fourth embodiment. The multi-computer switching device 1c with adjustable screen size further includes an index switching circuit 40, which is electrically connected to the processing circuit 10. The processing circuit 10 obtains the image resolution of the display device 18 through the image port 34. The processing circuit 10 is electrically connected to the first computer 14 through the first port unit 301 to receive the first image signal and the first control signal sent by the first computer 14. The processing circuit 10 is electrically connected to the second computer 16 through the second port unit 302 to receive the second image signal and the second control signal sent by the second computer 16. The indicator switching circuit 40 determines the position change of the indicator 19 of the mouse 12 between the first region 1801 and the second region 1802 of the display device 18 and relatively outputs an indicator switching signal to the processing circuit 10, so that the processing circuit 10 switches the signal according to the indicator The pointer input signal of the mouse 12 is selectively output to one of the first computer 14 and the second computer 16.

Please also refer to Figure 2. For example, the indicator switching circuit 40 determines that the indicator 19 of the mouse 12 is located in the first area 1801 of the display device 18. The processing circuit 10 outputs the indicator input signal to the first computer 14 according to the indicator switching signal. When the position of the indicator 19 changes, the indicator switching circuit 40 determines that the indicator 19 of the mouse 12 is located in the second area 1802 of the display device 18. The indicator switching circuit 40 relatively outputs the indicator switching signal to the processing circuit 10. The processing circuit 10 outputs the indicator input signal to the second computer 16 according to the indicator switching signal. The above-mentioned example is only one of the feasible embodiments and is not intended to limit this creation.

[Beneficial effect of embodiment]

One of the beneficial effects of this creation is that the multi-computer switching device with adjustable screen size provided by this creation can simultaneously display the display screens of multiple computers on the same display screen through a screen distribution circuit. And, by tracking the index coordinates of the index, you can easily switch and control multiple computers on the same display device. With the above technical solutions, users can quickly switch and monitor all computers at the same time. Not only is it very convenient to manage, but it also saves the trouble of having to do control switching all the time.

Another beneficial effect of this creation is that the multi-computer switching device with adjustable screen size provided by this creation can automatically adjust the full version of the display screen without causing image distortion, so that the space on the display device can be effectively used . Furthermore, the user's reading comfort is improved.

The content disclosed above is only a preferred and feasible embodiment of this creation, and does not limit the scope of the patent application for this creation, so any equivalent technical changes made by using this creation specification and graphic content are included in this creation application Within the scope of the patent.

1, 1a, 1b, 1c: Multi-computer switching device with adjustable screen size 10: Processing circuit 20: Screen distribution circuit 30: Port circuit 301: First port unit 302: Second port unit 11: Keyboard 12: Mouse 14: The first computer 16: Second computer 18: display device 181: The first display screen 182: Second display screen 183: Third display screen 184: Fourth display screen 1801: first area 1802: Second area 1803: Third area 1804: Fourth area 19: Index 32: Memory circuit 34: Video port 36: Switch interface 38: On-screen display circuit 40: Indicator switching circuit

FIG. 1 is a block diagram of a multi-computer switching device with adjustable screen size according to the first embodiment of the invention.

2A-2J are schematic diagrams of screen allocation in the first embodiment of the creation.

3 is a block diagram of a multi-computer switching device with adjustable screen size according to a second embodiment of the invention.

4 is a block diagram of a multi-computer switching device with adjustable screen size according to a third embodiment of the invention.

5 is a block diagram of a multi-computer switching device with adjustable screen size according to a fourth embodiment of the invention.

1: Multi-computer switching device with adjustable screen size

10: Processing circuit

20: Screen distribution circuit

30: Port circuit

301: First port unit

302: Second port unit

32: Memory circuit

34: Video port

11: Keyboard

12: Mouse

14: The first computer

16: Second computer

18: display device

Claims (10)

A multi-computer switching device with adjustable screen size is electrically connected to a keyboard, a mouse, a first computer, a second computer and a display device. The multi-computer switching device with adjustable screen size includes: A processing circuit; A memory circuit, electrically connected to the processing circuit, and storing multiple sets of extension capability identification information (EDID); A port circuit, electrically connected to the processing circuit, the port circuit includes a first port unit and a second port unit, and the processing circuit is electrically connected to the first port unit A first computer to receive a first image signal and a first control signal sent by the first computer, the processing circuit is electrically connected to the second computer through the second connection port unit to receive the A second image signal and a second control signal sent by the second computer; and A picture distribution circuit is electrically connected to the processing circuit and the display device. The processing circuit controls the picture distribution circuit to transmit an image distribution signal to the camera based on the first image signal and the second image signal The display device, the display device displays the first image signal and the second image signal in a first area and a second area respectively according to the image signal; Wherein, the processing circuit is based on the plurality of sets of extension capability identification information, an image resolution of the first image signal, an image resolution of the second image signal, and an area resolution of the first area An area resolution of the second area determines the images of the first image signal and the second image signal displayed on the first area and the second area on the display device, respectively Resolution, so that the first image signal and the second image signal fill the first area and the second area, respectively, and will not cause image distortion. The multi-computer switching device with adjustable screen size according to claim 1, wherein the first area and the second area are picture-by-picture (PBP) displayed on the display device. The multi-computer switching device with adjustable screen size according to claim 1, wherein the first area and the second area are picture-in-picture (PIP) displayed on the display device. The multi-computer switching device with adjustable screen size according to claim 2 or 3, wherein the first image signal of the first area and the second image signal of the second area are interchangeably displayed on the On the display device. The multi-computer switching device with adjustable screen size according to claim 3, wherein the sizes of the first area and the second area can be adjusted and displayed on the display device. The multi-computer switching device with adjustable screen size according to claim 1 further includes a switching interface, the switching interface is electrically connected to the processing circuit, and the switching interface is selectively based on a switching signal input by the processing circuit Output the pointer input signal of the mouse to one of the first computer and the second computer. For example, the multi-computer switching device with adjustable screen size in item 1, where the screen resolution is 640*480, 800*600, 1024*768, 1152*864, HD (1280*720), Full HD (1920*1080) , The display device of quarter full HD (2560*1440), 4K resolution (3840*2160), 5K resolution (5120*2880) or 8K resolution (7680*4320). For example, the multi-computer switching device with adjustable screen size according to claim 1 further includes an on-screen display circuit (OSD), the on-screen display circuit is electrically connected to the processing circuit, and the processing circuit sends out a communication signal For the screen display circuit, the processing circuit first detects the area where the coordinates of the mouse pointer are located, and sends out a confirmation signal to the screen display circuit, and the screen display circuit adjusts according to the obtained confirmation signal The screen display of the area where the coordinates of the indicator are located. For example, the multi-computer switching device with adjustable screen size according to claim 1, further includes an index switching circuit, the index switching circuit is electrically connected to the processing circuit, and the index switching circuit determines that an index of the mouse is The position change between the first area and the second area of the display device relatively outputs an index switching signal to the processing circuit, so that the processing circuit controls the mouse’s The index input signal is selectively output to one of the first computer and the second computer. The multi-computer switching device with adjustable screen size according to claim 1, wherein the first port unit is a port conforming to the PS/2 interface or the universal serial bus 2.0, 3.0, 3.1, 3.2, type C specifications , The second port unit is a port conforming to the PS/2 interface or universal serial bus 2.0, 3.0, 3.1, 3.2, type C specifications, the first computer, the second computer, and the display The display interface of the device is one or a combination of a video graphics array, a digital video interface, a high-definition multimedia interface or a display port.

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