TW202127194A - Kvm switch and data transmission method - Google Patents

Abstract

A data transmission method is used between a first computer, a second computer, an input interface device, a display device, and a KVM switch. The first computer, the second computer, the input interface device and the display device are coupled to the KVM switch. The data transmission method includes: when the KVM switch receives a first command from the input interface device, the KVM switch receives a screenshot from the first computer in response to the first command; the KVM switch recognizes the screenshot and generates text information correspondingly; and when the KVM switch receives a second command from the input interface device, the KVM switch transmits the text information to the second computer in response to the second command, and displays the text information on the display device.

Description

Multi-computer switcher and data transmission method

The present disclosure relates to a multi-computer switch and a data transmission method, and in particular to a multi-computer switch and a data transmission method without software installation.

By connecting multiple computer hosts in the computer room with a KVM switch, users can switch and operate between multiple computer hosts with a set of keyboard, display device and mouse.

However, when you want to copy and paste part of the images in the current running screen, generally speaking, each computer host must transmit data through software and a multi-computer switch. If the host computer is not installed or cannot install the software, it will not be able to communicate with the KVM switch for copying and pasting operations.

One aspect of the present disclosure relates to a multi-computer switcher. The multi-computer switch is suitable for the first computer, the second computer, the display device and the input interface device. The KVM switch includes the first computer port and the second computer connection Port, display device port, input interface device port, and processing unit. The first computer port is coupled to the first computer. The second computer port is coupled to the second computer. The display device port is coupled to the display device. The input interface device port is coupled to the input interface device. The processing unit is coupled to the first computer port, the second computer port, the display device port, and the input interface device port. The input interface device port receives the first operation command from the input interface device, the first computer port receives the selection screen from the first computer in response to the first operation command, and the processing unit recognizes the selection screen and generates text information correspondingly. The input interface device port receives the second operation command from the input interface device, and the processing unit transmits the text information to the second computer via the second computer port in response to the second operation command for the display device to display the text information.

Another aspect of the present disclosure relates to a data transmission method used between a first computer, a second computer, an input interface device, a display device, and a multi-computer switch. The first computer, the second computer, the input interface device and the display device are coupled to the multi-computer switch. The data transmission method includes: when the KVM switch receives a first operation command from the input interface device, the KVM switch receives a selection screen from the first computer in response to the first operation command; the KVM switch recognizes the selection screen and generates text accordingly Information; and when the KVM switch receives the second operation command from the input interface device, the KVM switch transmits the text information to the second computer in response to the second operation command, and displays the text information on the display device.

In summary, the multicomputer switcher cooperates with the instructions of copying, switching and pasting according to the data transmission method, allowing users to copy and paste text without installing additional software.

100‧‧‧Multi-computer switch

110‧‧‧First computer port

120‧‧‧Second computer port

130‧‧‧Display Port

140‧‧‧Input interface device port

150‧‧‧Processing unit

160‧‧‧Memory

210‧‧‧First Computer

220‧‧‧Second Computer

230‧‧‧Display device

240‧‧‧Input interface device

200‧‧‧Data transmission method

S210, S220, S230, S310, S320, S330, S340, S350, S360, S370, S380, S390‧‧‧Operation

CC‧‧‧Copy command

CS‧‧‧Switch command

CV‧‧‧Paste the instruction

DXY‧‧‧Select data

FR‧‧‧Marquee

IMG‧‧‧Select screen

KC‧‧‧Keyboard String Code

(X1,Y1), (X2,Y2)‧‧‧Coordinates

DIS‧‧‧Run screen

FIG. 1 is a schematic diagram of a KVM switch according to some embodiments of the present disclosure.

2 and 3 are flowcharts of a data transmission method according to some embodiments of the present disclosure.

FIG. 4 is a schematic diagram illustrating a copy command performed by a KVM switch according to some embodiments of the present disclosure.

FIG. 5 is a schematic diagram of a display device according to some embodiments of the present disclosure.

FIG. 6 is a schematic diagram illustrating a switching command performed by a KVM switch according to some embodiments of the present disclosure.

FIG. 7 is a schematic diagram illustrating a paste command performed by a KVM switch according to some embodiments of the present disclosure.

The following is a detailed description of the embodiments in conjunction with the accompanying drawings to better understand the aspect of the case, but the provided embodiments are not intended to limit the scope covered by the disclosure, and the description of the structural operations is not intended to limit The order of execution, and any structure that recombines components, produces a device with an equal effect, all within the scope of this disclosure. In addition, according to industry standards and common practices, the drawings are only for the purpose of supplementary explanation, and are not drawn in accordance with the original dimensions. In fact, the dimensions of various features can be arbitrarily increased or decreased for ease of explanation. In the following description, the same elements will be described with the same symbols to facilitate understanding.

Terms used in the entire specification and the scope of the patent application (terms), unless otherwise specified, usually have the usual meaning of each word used in this field, in the content disclosed here, and in the special content. Some terms used to describe the present disclosure will be discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance on the description of the present disclosure.

In addition, the terms "include", "include", "have", "contain", etc. used in this article are all open terms, meaning "including but not limited to". In addition, the "and/or" used in this article includes any one of one or more of the related listed items and all combinations thereof.

In this text, when an element is referred to as "connection" or "coupling", it can refer to "electrical connection" or "electrical coupling". "Connected" or "coupled" can also be used to mean that two or more components cooperate or interact with each other.

In addition, although terms such as “first”, “second”, etc. are used to describe different elements in this document, the terms are only used to distinguish elements or operations described in the same technical terms. Unless the context clearly indicates, the terms do not specifically refer to or imply order or sequence, nor are they used to limit the present invention.

Please refer to Figure 1. FIG. 1 is a schematic diagram of a KVM switch 100 according to some embodiments of the present disclosure. As shown in FIG. 1, the KVM switch 100 is applicable to the first computer 210, the second computer 220, the display device 230, and the input interface device 240. The KVM switch 100 includes a first computer connection port 110, a second computer connection port 120, a display device port 130, an input interface device port 140, a processing unit 150, and a memory 160.

Structurally, the processing unit 150 in the KVM switch 100 is coupled to the first computer port 110, the second computer port 120, the display device port 130, the input interface device port 140, and the memory 160. The KVM switch 100 passes the first A computer port 110 is coupled to the first computer 210. The KVM switch 100 is coupled to the second computer 220 via the second computer connection port 120. The KVM switch 100 is coupled to the display device 230 through the display device port 130. The KVM switch 100 is coupled to the input interface device 240 via the input interface device port 140.

Specifically, the first computer 210 and the second computer 220 can be connected to the KVM switch 100 through a VGA terminal (Video Graphics Array connector) and/or a universal serial bus (USB). The display device 230 can be connected to the KVM switch 100 through a High Definition Multimedia Interface (HDMI). The input interface device port 140 can be an input device such as a keyboard, a mouse, a touch pad, etc., and is connected to the KVM switch 100 through a serial port (Serial port) and/or a universal serial bus. The above-mentioned connection interface is only an example, and it can also be other interfaces compatible with commonly used computers, display devices and input interface devices currently on the market. The present invention is not limited to the above-mentioned interfaces.

In some embodiments, the processing unit 150 can be made up of various processing circuits, micro controllers, central processing units, microprocessors, digital signal processors (DSPs), and special application integrated circuits. Various methods such as application specific integrated circuit (ASIC), Complex Programmable Logic Device (CPLD), Field-programmable gate array (FPGA) or logic circuit are implemented.

In some embodiments, the memory 160 may include one or more memory devices, and each memory device or a collection of multiple memory devices includes a computer The recording medium can be read. The memory 160 can be read only memory (ROM), flash memory, floppy disk, hard disk, optical disk, flash disk, flash disk, tape, database that can be read from the network, or any The present disclosure can be realized by a recording medium with the same function that can be imagined by a person with ordinary knowledge in the technical field to which the present disclosure belongs.

For the convenience of description, the specific operations of each element in the KVM switch 100 will be described in the following paragraphs with diagrams, but it is not limited to this. Anyone familiar with this technique will not deviate from the spirit and scope of this case. , Dang can make a variety of changes and retouching. Please refer to Figure 2 and Figure 3. 2 and 3 are flowcharts of a data transmission method 200 according to some embodiments of the present disclosure. The data transmission method 200 is used between the first computer 210, the second computer 220, the display device 230, the input interface device 240, and the KVM switch 100. The data transmission method 200 includes the following two parts: operations S210 to S230 for displaying according to a switching instruction, and operations S310 to S390 for copying and pasting respectively according to a copy instruction and a paste instruction.

The first part is shown in FIG. 2, the data transmission method 200 includes operations S210, S220, and S230. First, in operation S210, the KVM switch 100 transmits the running screen of the currently controlled computer to the display device 230 for display. Specifically, the processing unit 150 in the KVM switch 100 receives the running screen of the corresponding computer from the currently connected computer port, and transmits the running screen to the display device 230 via the display device port 130 for display. For example, when the KVM switch 100 is currently connected to the first computer 210, the processing unit 150 of the KVM switch 100 receives the running screen of the first computer 210 through the first computer connection port 110. The processing unit 150 then passes through the display device The port 130 transmits the running screen of the first computer 210 to the display device 230 for display.

Then, in operation S220, when the KVM switch 100 does not receive the switching instruction from the input interface device 240, continue with operation S210, and the KVM switch 100 transmits the running screen of the first computer 210 to the display device 230 for display . On the other hand, when the KVM switch 100 receives the switching instruction from the input interface device 240, operation S230 is performed, and the KVM switch 100 switches the currently controlled computer in response to the switching instruction. Specifically, when the user inputs a switching command through the input interface device 240, the processing unit 150 in the KVM switch 100 receives the switching command from the input interface device port 140, and switches the currently controlled computer to another according to the switching command. A computer.

For example, if the KVM switch 100 is currently connected to the first computer 210, when the user issues a switching command by pressing a keyboard button or clicking a mouse, the KVM switch 100 will switch the computer currently being controlled according to the switching command It is the second computer 220. Then, when the operation S210 is continued, the KVM switch 100 transmits the running screen of the second computer 220 to the display device 230 for display.

In this way, when the KVM switch 100 is connected to multiple computer hosts, the user can switch and operate between the multiple computer hosts by issuing a switching command through the input interface device 240. It is worth noting that although only two computers are shown in this case, the number of computers is only an example for convenience and not to limit the case. Those with ordinary knowledge in the field can configure the number of computers according to actual needs and design corresponding switching instructions.

The second part is shown in Figure 3. The data transmission method 200 includes operations S310, S320, S330, S340, S350, S360, S370, S380 And S390. First, in operation S310, the KVM switch 100 is in the normal mode. Specifically, when the KVM switch 100 is in the normal mode, it will perform corresponding display according to the switching instruction (such as the above-mentioned operations S210 to S230), but it is not limited to this, and may also include performing corresponding operations according to other instructions.

Then, in operation S320, when the KVM switch 100 does not receive the copy instruction from the input interface device 240, the operation S310 is continued. When the KVM switch 100 receives the copy instruction from the input interface device 240, operation S330 is performed, and the KVM switch 100 enters the copy mode. Specifically, as shown in Figure 4, when the user inputs the copy command CC through the input interface device 240, the processing unit 150 in the KVM switch 100 receives the copy command CC through the input interface device port 140, and according to the copy command CC makes the KVM switch 100 enter the copy mode. For example, when the KVM switch 100 enters the copy mode, the display device 230 keeps displaying the last running screen before entering the copy mode. In other words, after entering the copy mode, you cannot switch between computers or operate on the contents of the currently displayed window.

Then, in operation S340, when the KVM switch 100 receives the selected data from the input interface device 240, operation S350 is performed, and the KVM switch 100 generates a check box in response to the selected data, and displays the check box through the display device 230. In addition, the KVM switch 100 will receive the screen image data in the selection frame from the currently controlled computer as the selected screen. Specifically, as shown in FIG. 4, the KVM switch 100 will be in the copy mode until the processing unit 150 receives the selected data DXY through the input interface device port 140, and the KVM switch 100 returns to the normal mode. Among them, the selected data DXY can be a set of coordinate data. The KVM switch 100 generates a selection frame FR according to the selected data DXY and outputs it to the display The display device 230 performs display, and receives the frame image data in the selection frame FR from the currently controlled first computer 210 according to the selected data DXY as the selected frame IMG. In some embodiments, the KVM switch 100 can be implemented by a functional circuit similar to a video capture card.

For example, the user can click, drag, and release the mouse to generate a start coordinate and an end coordinate, and the KVM switch 100 will receive the set of start and end coordinates as selected data. In some embodiments, while the user is manipulating the mouse, the KVM switch 100 generates a selection box based on the initial coordinates of the mouse click and the current coordinates of the mouse dragging and displays a selection box via the display device 230. In some other embodiments, after the user manipulates the mouse to click, drag and release, the KVM switch 100 according to the initial coordinates of the mouse click (such as the coordinates (X1, Y1) in Figure 5) and Release the end point coordinates of the mouse (such as the coordinates (X2, Y2) in Figure 5) to generate and display a marquee (such as the marquee FR in Figure 5) through the display device 230. As shown in FIG. 5, the processing unit 150 uses the frame image data in the selection frame FR (that is, between the coordinates (X1, Y1) and the coordinates (X2, Y2)) as the selected frame IMG.

Then, in operation S360, the KVM switch 100 recognizes the selected screen IMG and generates text information correspondingly. Specifically, the processing unit 150 will perform image recognition on the selected screen IMG to identify the text contained in the selected screen IMG. For example, as shown in Figure 5, the processing unit 150 should recognize the following text for the selection screen IMG in the selection frame FR: "Nov 28 09:23:46 geja-ubuntu16 anacron[597]: Job'cron.weekly'terminated Nov 28 09:23:46 geja-ubuntu16 anacron[597]: Normal exit(2 jobs run)".

Then, in operation S370, the KVM switch 100 generates a keycode (ascii code) KC according to the text information and stores it in the memory 160. For example, the KVM switch 100 generates and stores the keyboard string code "78 79 86 32 98 104" according to "Nov 28" in the text information. In other embodiments, when the text contained in the selected screen IMG does not directly correspond to the keyboard string code, the KVM switch 100 generates a percentage code according to the text information, and then generates the keyboard string code KC according to the percentage code. For example, if the selected screen IMG contains the Chinese text "Hello", the KVM Switch 100 will generate a percentage code "%E4%BD%A0%E5%A5%BD" based on the text information "Hello", and then generate a combination based on the percentage code. Save the corresponding keyboard string code.

In this way, without installing the software, the user can issue the copy command to the KVM switch 100 through the input interface device 240, and then control the KVM switch 100 to obtain the screen image to be copied from the computer currently being controlled. . By performing image recognition on the selected screen through the KVM switch 100, the text in the selected screen image can be converted to the keyboard string code KC for storage. In addition, when the text in the image is not in English, it can also be converted into a percentage code obtained by keyboard typing, so that the text can be easily parsed without installing additional software.

Then, in operation S380, when the KVM switch 100 receives the paste command from the input interface device 240, operation S390 is performed, and the KVM switch 100 transmits the text information to the currently controlled computer and displays it on the display device. 230 Display text information. Specifically, when the KVM switch 100 does not receive a switching instruction between operation S380 and operation S370, it will not proceed as described above. Operation S230, the KVM switch 100 will be copied and pasted on the same computer. On the other hand, when the KVM switch 100 receives a switching instruction between operation S380 and operation S370, the above operation S230 will be performed, and the KVM switch 100 can be copied and pasted on different computers.

For example, after the KVM switch 100 has obtained text data from the first computer 210 and stored in the memory 160, as shown in FIG. 6, if the KVM switch 100 receives the switching command CS from the input interface device 240 , The KVM switch 100 switches the currently controlled first computer 210 to the second computer 220. In other words, the KVM switch 100 transmits the running screen DIS of the second computer 220 to the display device 230 for display.

Then, as shown in Figure 7, when the processing unit 150 of the KVM switch 100 receives the paste command CV from the input interface device 240 through the input interface device port 140, the processing unit 150 will retrieve the keyboard word from the memory 160 The serial code KC is transmitted to the currently controlled second computer 220 through the second computer port 120. When the second computer 220 receives the keyboard string code KC, it will display the text represented by the keyboard string code KC through the display device 230. For example, when the second computer 220 receives the keyboard string code KC as "74 79 66", it will display the text "job" through the display device 230.

In this way, without installing software, the user can issue and paste commands to the KVM switch 100 through the input interface device 240, and then control the KVM switch 100 to store the keyboard strings in the memory 160. The code KC is transmitted to the currently controlled computer, so that the computer assumes that the keyboard is connected to input these keys, and then the corresponding English or number is displayed on the display device 230.

It is worth noting that after the operation of S390, if the KVM switch 100 receives the paste command again (that is, the conditions for operation S380 are satisfied), since the keyboard string code KC is stored in the memory 160, the KC switch 100 The device 100 may also perform operation S390 again. However, if the KVM switch 100 receives the copy instruction and selected data again (that is, the conditions for operations S320 and S340 are satisfied) before the paste instruction is received, the KVM switch 100 will generate a new keyboard string Code KC and overwrite the previous keyboard string code KC.

From another perspective, operations S220, S320, and 380 in the data transmission method 200 are independent triggering conditions. The diagrams in this case and the above description are only examples for convenience, and are not limited to this. The field has common The knowledgeable person can make design adjustments according to actual needs. In addition, in some other embodiments, the data transmission method 200 may also include a cancel command, so that the KVM switch 100 can exit the copy state without generating new selected data, so as to avoid overwriting by accidentally entering the copy mode. Go to the text string corresponding to the last selected data.

Although the disclosed methods are shown and described herein as a series of steps or events, it should be understood that the order of these steps or events shown should not be construed in a limiting sense. For example, some steps may occur in a different order and/or simultaneously with other steps or events other than the steps or events shown and/or described herein. In addition, when implementing one or more aspects or embodiments described herein, not all the steps shown here are necessary. In addition, one or more steps in this document may also be executed in one or more separate steps and/or stages.

It should be noted that, provided there is no conflict, in this disclosure It is to be understood that the various figures, embodiments, and features and circuits in the embodiments can be combined with each other. The circuit shown in the drawing is only an example, and is simplified to make the description concise and easy to understand, and is not intended to limit the case. In addition, the various devices, units, and components in the foregoing embodiments can be implemented by various types of digital or analog circuits, and can also be implemented by different integrated circuit chips, or integrated into a single chip. The foregoing is only an example, and the present disclosure is not limited thereto.

To sum up, by applying the above-mentioned various embodiments, the KVM switch 100 cooperates with the instructions of copying, switching, and pasting according to the data transmission method 200, so that the user does not need to install additional software. Copy and paste the text. Because there is no need to install additional software, computers with different operating systems can be directly applied. In use, the computer can only be connected to the keyboard, mouse and display device, and will not see the additional hardware that supports the software. In addition, since this case is copied and pasted by the KVM switch 100 according to the data transmission method 200, it has nothing to do with the operating system and can be copied before the host is fully started. In other words, this case can copy the text that appears in the boot screen and paste it to other hosts for further analysis, which is convenient for error elimination.

Although the content of this disclosure has been disclosed in the above manner, it is not intended to limit the content of this disclosure. Those with ordinary knowledge in the technical field can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, this The scope of protection of the disclosed content shall be subject to the scope of the attached patent application.

200‧‧‧Data transmission method

S310~S390‧‧‧Operation

Claims (10)

A multi-computer switch is suitable for a first computer, a second computer, a display device and an input interface device. The multi-computer switch includes: A first computer port, coupled to the first computer; A second computer port, coupled to the second computer; A display device port, coupled to the display device; An input interface device port, coupled to the input interface device; and A processing unit coupled to the first computer port, the second computer port, the display device port, and the input interface device port; Wherein, the input interface device port receives a first operation command from the input interface device, the first computer port receives a selection screen from the first computer in response to the first operation command, the processing unit recognizes the selection screen and Correspondingly, a text information is generated, the input interface device port receives a second operation command from the input interface device, and the processing unit transmits the text information to the second computer via the second computer port in response to the second operation command. For the display device to display the text information. The multi-computer switch according to claim 1, wherein when the input interface device port receives the first operation command from the input interface device, the processing unit transmits a first operation screen of the first computer through the display device Port is transmitted to the display device for display. After the input interface device port receives the first operation command from the input interface device, the input interface device port receives a third operation command from the input interface device, and the processing unit responds The third operation instruction to pass the second running screen of the second computer through the display device Port to the display device for display. The multi-computer switch according to claim 1, wherein after the input interface device port receives the first operation command from the input interface device, the processing unit receives a selection data from the input interface device via the input interface device port, The processing unit generates and displays a selection frame through the display device in response to the selected data, and the first computer port receives a frame image data in the selection frame from the first computer as the selection frame in response to the selection frame. The multi-computer switch according to claim 1, wherein the processing unit generates a keyboard string code according to the text information, and transmits the keyboard string code to the second computer port in response to the second operation command The second computer is used for display by the display device. The multi-computer switch according to claim 4, wherein the processing unit generates a percentage code according to the text information, and then generates the keyboard string code according to the percentage code, and in response to the second operation command, the percentage code is passed through The second computer connection port is transmitted to the second computer for the display device to display. A data transmission method used between a first computer, a second computer, an input interface device, a display device and a multi-computer switch, the first computer, the second computer, the input interface device and the The display device is coupled to the KVM switch, and the data transmission method includes: When the KVM switch receives a first operation instruction from the input interface device Let the KVM switch receive a selection screen from the first computer in response to the first operation instruction; The KVM switch recognizes the selected screen and correspondingly generates a text message; and When the KVM switch receives a second operation command from the input interface device, the KVM switch transmits the text information to the second computer in response to the second operation command, and displays the text information on the display device . The data transmission method described in claim 6, further including: When the KVM switch receives the first operation instruction from the input interface device, the KVM switch transmits a first running screen of the first computer to the display device for display; and When the KVM switch receives a third operation command from the input interface device, the KVM switch transmits a second running screen of the second computer to the display device for display in response to the third operation command. The data transmission method described in claim 6, further including: After the KVM switch receives the first operation command from the input interface device, the KVM switch receives a selection data from the input interface device; The KVM switch is generated in response to the selected data and displays a selection frame through the display device; and The KVM switch receives a frame image data in the selection frame from the first computer as the selected frame. The data transmission method described in claim 6, further including: The KVM switch generates a keyboard string code based on the text information; and In response to the second operation instruction, the KVM switch transmits the keyboard string code to the second computer for display by the display device. The data transmission method described in claim 9 further includes: The KVM switch generates a percentage code according to the text information; The KVM switch generates the keyboard string code according to the percentage code; and In response to the second operation command, the KVM switch transmits the percentage code to the second computer for display by the display device.

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