CN117135601A

CN117135601A - KVM switch and wireless connection method

Info

Publication number: CN117135601A
Application number: CN202310193778.8A
Authority: CN
Inventors: 谢承志; 林琨杰
Original assignee: Aten International Co Ltd
Current assignee: Aten International Co Ltd
Priority date: 2022-05-27
Filing date: 2023-03-02
Publication date: 2023-11-28
Also published as: TW202347100A; TWI814407B

Abstract

The application discloses a KVM switch and a wireless connection method. The wireless connection method is applied to the KVM switch to simultaneously maintain a connection state with a plurality of hosts. First, the KVM switch selects one of the hosts as a control object. And then, respectively calculating the relative intervals of the display picture corresponding to the control object and the display pictures corresponding to the other hosts according to the layout information. Then, the connection interval between each host and the KVM switch is respectively configured according to the relative intervals. Finally, the hosts are respectively configured to maintain Bluetooth connection by using the connection intervals and the KVM switch through the wireless transceiver module. Wherein the size of each wire spacing is proportional to the size of the corresponding relative spacing.

Description

KVM switch and wireless connection method

Technical Field

The present application relates to a KVM switch, and more particularly, to a method for performing one-to-many wireless connection between a wireless Bluetooth switch and multiple hosts.

Background

A KVM switch, commonly known as a keyboard video mouse (Keyboard Video Mouse; KVM) switch, can be used to control multiple computers simultaneously in a switching manner via a set of keyboards, screens, and mice. In some types of KVM switches, there is no screen attached, and only one-to-many switching functions are provided for the keyboard and mouse. The KVM switch is suitable for use in a control environment in which multiple screens are arranged to form a TV wall.

Because the traditional KVM switch needs to connect multiple hosts at the same time, the number of lines required is quite large, which occupies space and makes layout difficult. The wireless version of KM switch can use bluetooth technology for wireless connection to reduce the physical line requirements. However, the conventional bluetooth KM switch can only be wired one-to-one, in other words, only the computer host being controlled can be connected to the bluetooth KM switch. When switching the host computers, the KM switch must interrupt the connection with the original host computer and reestablish the connection with the host computer to be controlled. Because the processing of the bluetooth connection requires time, the user experiences a serious delay (i.e., a click feel) during the switching process.

Therefore, a method for improving bluetooth connection efficiency in a one-to-many connection environment is to be developed.

Disclosure of Invention

The present disclosure provides a wireless connection method for simultaneously maintaining a connection state with a plurality of hosts in a KVM switch. First, the KVM switch selects one of the hosts as a control object. Then, the processor in the KVM switch calculates a plurality of relative intervals between the display screen of the control object and the display screens of the remaining hosts. The processor then configures a link interval between each host and the KVM switch according to the relative intervals. Finally, the processor configures the hosts to maintain Bluetooth connections using the connection intervals and the KVM switch via the wireless transceiver module, respectively. Wherein the size of each wire spacing is proportional to the size of the corresponding relative spacing.

For example, for the first host displaying the first frame, the second host displaying the second frame, and the first frame and the second frame being adjacent, the link interval is configured as follows. When the control object is a first host, the connection interval between the KVM switch and the first host is configured as a first connection interval. Then, the connection interval between the KVM switch and the second host is configured as a second connection interval. In this case, the processor configures the second wire spacing to be greater than the first wire spacing.

Further, if a third host displays a third frame and the first frame are not adjacent, the processor configures the third host to a third link interval configuration, and the third link interval is greater than the second link interval.

In a further embodiment, the first screen includes a cursor. When the cursor moves to the junction of the first frame and the second frame, the KVM switch switches the control object to the second host.

In a further embodiment, when the control object is switched to the second host, the processor configures a wire interval with the second host as the first wire interval, and configures a wire interval with the first host wire as the second wire interval.

In a further embodiment, the display frames corresponding to the hosts form an operable desktop. The processor may be arranged to provide a layout table using the storage means, the layout table defining the corresponding positions of the display screens on the operable desktop. The processor of the KVM switch calculates the connection interval used by each host according to the corresponding position in the layout table. The calculated link intervals may also be stored together in the layout table.

In a further embodiment, the processor 117 may recalculate the link intervals and update the layout table when the corresponding positions of the display frames change.

In a further embodiment, the wireless transceiver module is configured by the processor to periodically receive link event requests sent from the hosts according to the link intervals. The processor is configured to send corresponding connection event responses to the host computer sending the connection event request by utilizing the wireless transceiver module.

In a further embodiment, the processor uses the opportunity to transmit a link event response to the corresponding host together with the link interval to be configured.

In a further embodiment, when the KVM switch receives the connection event request and the host is the control object, the processor transmits a user input in response to the connection event. The user input values may include a device identification code, a keyboard input value, and a mouse input value. The keyboard input values may include one or any combination of keyboard key values, keyboard combination key values, and keyboard pilot light values. The mouse input values may include at least: one of the horizontal axis direction movement value, the vertical axis direction movement value, and the mouse button value, or any combination thereof.

In a further embodiment, the KVM switch and the hosts are wirelessly connected using a Bluetooth low energy protocol.

The present disclosure further provides an embodiment of a KVM switch for connecting to a plurality of hosts. The KVM switch comprises a wireless transceiver module, a processor and a memory device. The wireless transceiver module is used for carrying out wireless transmission with the hosts. The processor is connected with the wireless transceiver module and is used for processing the computer switching function. The processor switches and selects one of the hosts as a control object, calculates a plurality of relative intervals of display pictures of a plurality of hosts and the display picture of the control object respectively, and configures a plurality of connecting intervals corresponding to the hosts according to the relative intervals. The small size of the link spacing is proportional to the size of the corresponding relative spacing.

Embodiments of the present description provide at least the following advantages. In the case of one-to-many connection, the processor 117 can flexibly configure different connection intervals for the corresponding host according to the relative positions of the display and the cursor. So that the host in control state can obtain the improvement of control efficiency. On the other hand, because the host which is not controlled continues to maintain the uninterrupted wireless connection state, when the host is switched and controlled, the user does not need to spend time to reestablish new wireless connection, and the user can experience a smooth computer switching effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a multi-computer control system 150 of an embodiment of the present application.

Fig. 2 is a flowchart of a link interval configuration step according to an embodiment of the present application.

Fig. 3 is a schematic diagram of the relative spacing between multiple screens according to an embodiment of the present application.

Fig. 4 illustrates a conventional configuration of a link interval CI of a one-to-many bluetooth link.

Fig. 5 is a link interval CI configuration manner of the one-to-many bluetooth link in this embodiment.

Fig. 6 is a schematic diagram of a connection event CE in the present embodiment.

Fig. 7 is a schematic diagram of a bluetooth packet 600 according to the present embodiment.

Fig. 8 is a schematic diagram of a layout table 800 according to the present embodiment.

Fig. 9 is a schematic diagram of the relative spacing between multiple screens according to another embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which are obtained by a person skilled in the art without making any inventive effort, are intended to fall within the scope of the present application, based on the embodiments of the present application.

FIG. 1 is a multi-computer control system 150 of an embodiment of the present application. In the KVM control system 150, a KVM switch 110 is provided for simultaneously performing Bluetooth wireless connection with a plurality of hosts 100 a-100 e. The operation screens of the five hosts 100a to 100e are displayed on the corresponding screens 102a to 102e, respectively. For convenience of description, the host 100 is referred to as any one of the hosts 100 a-100 e, and the screen 102 is referred to as one or more of the corresponding screens 102 a-102 e. For example, each host 100 in FIG. 1 corresponds to one or more screens 102. The screens 102 may be arranged side by side to form a continuous screen, known as a video wall.

The KVM switch 110 comprises a wireless transceiver module 111, an interface module 113, a storage device 115, and a processor 117, wherein the processor 117 is connected among the wireless transceiver module 111, the interface module 113, and the storage device 115.

The processor 117 may control the wireless transceiver module 111 to wirelessly connect with the host 100 via a wireless bluetooth connection or other wireless transmission protocol, but the application is not limited thereto.

The interface module 113 is used for externally connecting the keyboard 120 and the mouse 130, so that the processor 117 receives an input instruction of a user through the interface module 113. The interface module 113 may be a Universal Serial Bus (USB) or other wired or wireless connection port.

The storage device 115 provides storage space for information or data required for the operation of the processor 117. In one embodiment, the storage device 115 may include a layout table 800 for recording the relative positions of the screens 102 corresponding to the hosts 100. Storage 115 may also include flash memory or a hard disk for storing firmware or an operating system for processor 117 to perform functions.

The host 100 of the present embodiment may be a conventional computer or server system, and has a storage device, a wireless communication module, a processor and a display card (not shown), and an operating system installed thereon, and receives user operations through the KVM switch 110. The wireless communication module (not shown) in the host 100 is configured to support a bluetooth protocol or other wireless transmission protocol corresponding to the wireless transceiver module 111 of the KVM switch 110, so as to facilitate the implementation of the present embodiment.

In one embodiment, when the multiple screens 102 are arranged to form a video wall, the KVM switch 110 can simulate the screen displayed by the video wall into a single operable desktop 104, that is, the cursor can be moved to any position on the operable desktop 104, and further controls the host 100 corresponding to the position of the cursor without additionally inputting an instruction for switching control objects. This technique is simply referred to as seamless switching mode (Boundless Switch Mode). In other words, when the KVM switch 110 detects that the cursor on the operable desktop 104 moves to the edge corresponding to any one of the physical screens 102, the processor 117 drives to switch the control object to the host 100 corresponding to the adjacent screen 102, so that the keyboard 120 and the mouse 130 can control the new control object. For example, the moment when the cursor moves from the screen 102a to the screen 102b of the operable desktop 104 (i.e., the adjacent edges of the screen 102a and the screen 102 b), the processor 117 drives the control object to switch from the host 100a to the host 100b, so that the keyboard 120 and the mouse 130 can be used to switch from the original control host 100a to the control host 100b. Therefore, the user can obtain a smooth and intuitive multi-computer operation experience. The adjacent screens referred to in the present embodiment are not limited to two screens physically in close contact. The operation window may be located on the operation interface of the two-dimensional space, and the operation window is located on the current operation window partition (neighbor).

In one embodiment, the KVM switch 110 includes layout information (e.g. Vidio layout information) defining the relative positions of the corresponding display frames of the hosts 100, i.e. the layout information defines the arrangement of the screens 102, and further stores the defined relative positions in the KVM switch 110 for subsequent operation. In one embodiment, the user can adjust the relative positional relationship between the hosts 100 in the layout information at any time, and update the information of the old relative positional relationship in the KVM switch 110 after the adjustment is completed.

The embodiment of the application provides a method for dynamically adjusting the connection interval CI of multiple hosts 100 to maintain bluetooth connection, so that different hosts 100 maintain a connection state with different connection intervals CI and multiple computer switches 110, and the wireless transceiver module 111 and the hosts 100 do not need to take time to reestablish connection, thereby realizing a method for dynamically allocating wireless transmission resources without interrupting connection.

In step 201, the processor 117 starts bluetooth wireless transmission with the plurality of hosts 100 through the wireless transceiver module 111. Initially, one of the hosts 100 in fig. 1 may be selected as a control object according to a user control or a default value. The picture displayed by the host 100 of the control object becomes a reference point for the subsequent operation.

In step 203, the connection interval corresponding to each host 100 is set according to the relative position of each display screen and the reference point.

In one embodiment, the host 100 and the screen 102 are two separate devices. Each host 100 may Display a Display screen through a Display interface (e.g., a High Definition Multimedia Interface (HDMI) or a Display Port (displayport)) through the screen 102, and a plurality of screens 102 may be arranged to form a video wall. Therefore, the KVM switch 110 can calculate the link interval CI between each host 100 and the KVM switch 110 according to the relative positional relationship between the screen 102 and the other screens 102 corresponding to the control object. The basic connection interval is set between the host 100 as the control object and the KVM switch 110.

In one embodiment, the display frames of all hosts 100 can be displayed in the form of sub-windows on the same screen 102. For example, the screen 102 may be a high-function display that receives display images of a plurality of hosts 100 and displays the display images of the plurality of hosts 100 on a single display panel using a plurality of sub-images. In another embodiment, the KVM switch 110 can also calculate the relative interval between each host 100 and the control object according to the layout information, i.e. the relative position of the display screen corresponding to each host 100 on a single display panel can be configured according to the layout information.

At this time, the KVM switch 110 is used for calculating the reference of the relative interval, and may include the coordinate position of the display frame of each host on the screen 102, the coordinate position of the frame displayed by the control object on the screen 102, or the coordinate position of the cursor on the screen 102. In an embodiment, the KVM switch 110 can obtain the configuration relationship between the hosts 100 by using the layout information, so that after the KVM switch 110 determines the control object, the relative intervals between the remaining hosts 100 and the control object can be calculated, and the link interval between the hosts 100 and the KVM switch 110 can be determined according to the relative intervals, which will be described later.

The processor 117 may calculate the relative intervals of the display screen of the control object and the display screens of the remaining respective hosts, respectively. Next, the processor 117 configures the link interval CI between each host 100 and the KVM switch 110 according to the respective relative intervals. Finally, the processor 117 maintains the bluetooth connection with the KVM switch 110 via the transceiver module 111 according to the respective connection interval CI. In the present embodiment, the basic link interval CI at which the control object itself is configured is smaller than the minimum value among all the above-described link intervals CI. The wiring intervals CI of the remaining hosts 100 are increased with the calculated relative intervals. In other words, the size of each wire spacing is proportional to the size of the corresponding relative spacing.

For example, the host 100a in fig. 1 displays a first picture through the screen 102a, the host 100b displays a second picture through the screen 102b, and the first picture and the second picture are adjacent. When the control object is the host 100a, the processor 117 configures the connection interval CI of the bluetooth wireless connection between the kvm switch 110 and the host 100a to be the first connection interval (i.e. the basic connection interval). The processor 117 configures the connection interval CI of the bluetooth wireless connection between the KVM switch 110 and the host 100b as the second connection interval. Here, the second wire interval is configured to be greater than the first wire interval.

Further, the host 100c in fig. 1 displays a third screen through the screen 102c, and the third screen is not adjacent to the first screen, and the processor 117 configures a connection interval CI of the bluetooth wireless connection between the KVM switch 110 and the host 100c as a third connection interval, and the third connection interval is greater than the second connection interval.

In step 205, the processor 117 connects to each host 100 using the wireless transceiver module 111 according to the connection interval CI respectively configured. For example, in bluetooth wireless technology, transmission and reception of signals may be performed according to Time Slot (Time Slot) units. By using different link intervals CI, the slot positions of the KVM switch 110 and the different hosts 100 can be shifted to avoid interference collision. The present embodiment has the advantage of flexibly adjusting the connection interval CI of the surrounding hosts 100 centering on the control object, appropriately allocating more resources to the more easily used objects, and keeping the connection state of all the objects uninterrupted.

In step 207, it is determined whether the screen layout or the control object is abnormal.

In this case, the KVM switch 110 flexibly schedules the connection interval CI of each host 100. When the control object is changed, or when the layout of all the screens 102 is changed, all the link intervals CI may also need to be recalculated due to the reference points being different.

For example, when the control object is switched from the host 100a to the host 100b, the processor 117 configures the link interval CI with the host 100b as the first link interval (i.e., the basic link interval). At this time, the host 100a is no longer the controlled object, so the connection interval CI of the host 100a and the KVM switch 110 for Bluetooth wireless connection is configured as the second connection interval according to the configuration principle described above.

The manner in which the KVM switch 110 switches control objects can be automatically performed according to the cursor position in the operable desktop 104, in addition to conventional switching commands or buttons. For example, when the cursor in the operable desktop 104 is located on the first screen displayed on the screen 102a, the control object of the KVM switch 110 is the host 100a corresponding to the screen 102 a. When the cursor moves to the boundary between the first frame and the second frame, the KVM switch 110 switches the control object to the host 100b. When the host 100b is controlled, the wireless transceiver 111 can receive the control command input by the keyboard 120 and the mouse 130, and a cursor or related operation screen is displayed on the screen 102 b.

In a basic implementation, the KVM switch 110 simply forwards the input signals from the keyboard 120 and the mouse 130 to the host 100 to be controlled, and displays the operation effect on the corresponding screen 102. In a further embodiment, the processor 117 of the KVM switch 110 also integrally manages the coordinate space and cursor position of the operable desktop 104. Since each host 100 also has a cursor display function on the desktop in its own operating system. In order to avoid the collision of the operation interfaces, when the host 100 is controlled by the KVM switch 110, the protocol parameters related to the input interfaces can be further communicated, so that the cursor position managed by the operating system in the host 100 is synchronized with the cursor position managed by the operable desktop 104.

Accordingly, when no layout abnormality or control object switching occurs in step 207, the flow continues to step 205. In contrast, when the layout is changed or the control object is changed, step 203 is performed again, and the link intervals CI of all hosts 100 are calculated according to the new reference points.

Fig. 3 is a schematic diagram of the relative spacing between multiple screens according to an embodiment of the present application. For ease of illustration, it is further assumed that each screen 102 in FIG. 3 is the same size and resolution, but the application can be performed in the same manner at different sizes or different resolutions. When five screens (screen 102a, screen 102b, screen 102c, screen 102d, and screen 102 e) are laterally arranged together in order, the coordinates on the x-axis may be correspondingly defined as 1 to 5, and the coordinates on the y-axis may be correspondingly defined as 1. When the control object of the KVM switch 110 is the host 100b corresponding to the screen 102b, the reference point is located at the coordinate point of x=2. Relative to this reference point, the relative spacing D of the other screens 102a, 102c, 102D and 102e may be obtained from the absolute value of the difference in their x-axis coordinates. In other words, the relative interval d=1 of the screen 102a, the relative interval d=1 of the screen 102c, the relative interval d=2 of the screen 102D, and the relative interval d=3 of the screen 102 e. In another embodiment, when five screens (screen 102a, screen 102b, screen 102c, screen 102d, and screen 102 e) are arranged together in a horizontal order, the KVM switch 110 can set layout information, and the screens 102a, 102b, 102c, 102d, and 102e are arranged in a horizontal order from left to right, so that when the control object of the KVM switch 110 is the host 100b corresponding to the screen 102b, the host 100b is the reference point. With respect to this reference point, the relative interval of the screen 102a and the screen 102b is 1, the relative interval of the screen 102c and the screen 102b is 1, the relative interval of the screen 102d and the screen 102b is 2, and the relative interval of the screen 102e and the screen 102b is 3.

In an embodiment, one of the ways to calculate the relative interval according to the layout information may be the number of intervals that the host 100 as the control object should switch to the corresponding host 100, for example, when the host 100b wants to switch to the host 100c, the screen 102c is adjacent to the right side of the screen 102b, so that only one time of switching is needed, and the relative interval is 1; similarly, when the host 100b wants to switch to the host 100d, since the screen 102d is located on the right side of the screen 102c, after the KVM switch 110 switches from the host 100b to the host 100c in the cursor seamless switching process, the host 100c switches to the host 100d, so that the secondary side needs to switch to control the host 100d, and therefore the relative interval is 2, and the rest is the same, and the description is omitted. In another embodiment, the KVM switch 110 can also be configured to switch directly from the host 100b to the host 100d by detecting whether the cursor enters the area of the screen 102b, so that the control object can be directly switched from the host 100b to the host 100d when the cursor moves to the area, and in this embodiment, when the control object is the host 100b, the relative interval of the host 100d is 1.

In an embodiment, the foregoing embodiments can further obtain the switching mode, the arrangement relationship and the corresponding relationship of the screens 102 corresponding to the hosts 100, and the relative interval between the hosts 100 corresponding to the control objects by setting the layout information of the KVM switch 110.

It will be appreciated that the embodiment of fig. 3 is a video wall formed by a plurality of physical displays corresponding to the hosts, but other implementations are possible. For example, the operable desktop 104 may be an operable desktop that displays multiple sub-pictures by a single display, with each sub-picture corresponding to a host. On the other hand, although fig. 3 shows that the arrangement of the plurality of screens 102 is one-dimensional (1×5), it is understood that the present embodiment can also be applied to the case of two-dimensional arrangement, for example, 2×4, 3×3, and the like.

Fig. 4 illustrates a conventional configuration of a link interval CI of a one-to-many bluetooth link. In the conventional one-to-many bluetooth connection, each connection object of the KVM switch 110 is fixed in the connection interval CI for launching the connection event CE, so that the connection event CE of each connection object can only be launched in turn on the time axis. For example, a wire event CE1, a wire event CE2, and a wire event CE3. For a host 100 in an uncontrolled state, the intent of initiating the link event CE is to maintain the link state only and not to transmit any data. Even so, as much time slot resources are occupied, so that the connection event CE actually requiring data transmission must be processed in a deferred manner. When the number of connection objects of the KVM switch 110 is large, some connection objects may be forced to be disconnected due to the rotation time exceeding the upper limit of the connection interval CI. The time it takes to reestablish the connection can result in a poor user experience.

Fig. 5 is a link interval CI configuration manner of the one-to-many bluetooth link in this embodiment. Described in connection with the embodiments of fig. 1 and 3. If the host 100b is the object being controlled by the KVM switch 110, the connection interval CI is set to CI1, the corresponding screen 102b is used as the reference point, and the connection interval CI corresponding to the host (e.g., the host 100a and the host 100 c) with the relative interval D=1 is set to CI2. Further, the connection interval CI of the host (e.g., the host 100D) corresponding to the relative interval d=2 is configured as CI3. As can be appreciated from fig. 5, the larger the relative spacing D, the longer the corresponding link spacing CI. For example, the link interval CI1 is two unit times, the link interval CI2 is four unit times, and the link interval CI3 is eight unit times, and so on. Here, each host 100 shown in fig. 1 is periodically connected to the kvm switch 110 via the bluetooth wireless connection at the sequentially configured connection intervals CI.

In one embodiment, the starting time points of each link event CE are staggered. For example, the connection event CE1 is periodically operated from the time unit number 1 in fig. 5, and the connection event CE2 is operated from the time unit number 2. Since time unit number 3 encounters the period of the link event CE1, the link event CE3 starts to operate periodically from time unit number 4. In a subsequent operation, if more than two connection events CE are encountered and arranged to occur in the same time unit, the connection event CE is executed in principle with priority to the connection object to be overdue. The processor 117 of the present embodiment may further derive other intelligent methods to prevent the link intervals CI of the plurality of link events CE from being bumped on the same time unit through the pre-operation, which is not limited thereto.

Fig. 6 is a schematic diagram of a connection event CE in the present embodiment. In one embodiment, the wireless transceiver module 111 can periodically perform the connection event CE with the plurality of hosts 100 according to the connection interval CI. A link event CE occurs as follows. The transceiver module 111 receives the request for a connection event sent from a host 100. The processor 117 sends a corresponding connection event response to the host 100 sending the connection event request by using the wireless transceiver module 111.

Here, the configured link interval CI may be communicated to the corresponding host 100 in several ways. For example, the processor 117 may send the link interval CI configured in step 203 to the corresponding host 100 together with the opportunity to send a link event response. In a further embodiment, the KVM switch and the hosts are wirelessly connected using the Bluetooth Low energy protocol. Thus, in certain specific modes, the KVM switch 110 can also initiate connection requests at any time, and return connection interval CI reconfiguration requests to each host 100.

Fig. 7 is a schematic diagram of a bluetooth packet 600 according to the present embodiment. The host 100 being controlled by the KVM switch 110 receives command data input from the keyboard 120 and the mouse 130 during a wired event CE. In one embodiment, the data entered by the keyboard 120 and mouse 130 is transmitted in the form of an HID report description 710. In conventional bluetooth transmissions, each wired event CE can only transmit one of the keyboard 120 or the mouse 130 for data input. In this embodiment, an HID report description 710 is provided that can simultaneously transfer input data of the keyboard 120 and the mouse 130 in the same wiring event CE.

HID report description 710 is a data structure defining the data format and purpose of use. For example, how many reports the device supports, the size of the report, and the use of each byte or bit in the report. For example, in the case of a mouse device, the data content is the movement and key-press action of the mouse; in the case of a keyboard, the data will be the output status of the keys, combination keys, and indicator lights. For the application layer, the usage of what manipulation the data in the report is can be known as long as the report is interpreted.

HID report description 710 may contain multiple reports, and the categories of reports may be divided into three categories: input, output, and Feature (Feature) reports. The host 100 will receive data with the input report and transmit data with the output report, while the feature report is bi-directional.

In other words, when the KVM switch 110 and the controlling host 100 perform the connection event CE, the processor 117 can transmit the Bluetooth data packet containing the user input value in the connection event response through the wireless transceiver module 111. The user input values may include a device identification code, a keyboard input value, and a mouse input value. The keyboard input values may include one or any combination of keyboard keys 722, keyboard combination keys 724, and keyboard indicators 726. The mouse input values may include at least: one of the horizontal axis direction movement value 723, the vertical axis direction movement value 725, and the mouse button value 721, or any combination thereof.

Fig. 8 is a schematic diagram of a layout table 800 according to the present embodiment. The display frames corresponding to the hosts 100 shown in fig. 1 form an operable desktop 104. The processor 117 may be configured to provide a layout table 800 using the storage device 115, and the layout table 800 may define the corresponding location of each display on the operable desktop 104. For example, when the control object of the KVM switch 110 is the host 100b, the control state of the host number 2 is set to "on" (while the control states of the other hosts are off). The position of each screen 102 as shown in fig. 1 may be represented in fig. 3 in the form of two-dimensional spatial coordinates. The relative interval D, as calculated in the embodiment of fig. 3, is recorded in the field of the "relative interval" of the layout table 800. The processor 117 in the KVM switch 110 calculates the connection interval CI used by each host 100 according to the relative interval in the layout table 800. In one embodiment, the calculated link interval CI may be stored in the layout table 800 (e.g., the "link interval" field of FIG. 8) for direct query during use. In a further embodiment, the wiring intervals CI may be divided into several levels according to the relative intervals D. For example, CI1 represents two units of time, CI2 represents four units of time, CI3 represents eight units of time, and CI4 represents sixteen units of time. Each time unit may be a length of one or more time slots, which is not limited in the scope of the present embodiment depending on the practical application.

The advantage of using the layout table 800 to manage computers in the KVM switch 110 is that the corresponding link interval CI can be quickly applied to new settings when the control object is changed. The situation of the screen configuration can be grasped efficiently. Therefore, when any screen 102 is replaced by a fault and deleted, the layout table 800 can be simply reused to calculate a new link interval CI, so as to maintain the operational convenience of the operable desktop 104.

In one embodiment, the layout information includes a layout table 800, and the user can generate the layout table 800 after setting the layout information of the KVM switch 110, so that the number of the relative intervals and the corresponding connection intervals CI can be obtained through the layout table 800 in the above embodiments.

In the case of one-to-many connection, the processor 117 can flexibly configure different connection intervals for the corresponding host according to the relative positions of the display and the cursor. So that the control efficiency can be improved when each host is switched. On the other hand, the host computer which is not controlled can keep the uninterrupted wireless connection state, so that a new wireless connection is not required to be reestablished when the host computer is switched and controlled, and a user can experience a smooth computer switching effect. Still further, embodiments of the present application provide an improved HID report description 710 data structure that enables each wired event CE to simultaneously transmit keyboard and mouse input data. Thereby more efficiently allocating transmission resources.

Fig. 9 is a schematic diagram of the relative spacing between multiple screens according to another embodiment of the present application. In an embodiment, if the arrangement of the plurality of screens 902a to 902i corresponding to the hosts is 3×3, and the control object is directly diagonally switched from the screen 902d corresponding to the 4 th host to the screen 902b corresponding to the 2 nd host, as shown by the path 910, the relative interval is 1, whereas if the control object cannot be directly diagonally switched from the screen 902d corresponding to the 4 th host to the screen 902b corresponding to the 2 nd host, as shown by the paths 920 and 930, the switching manner needs to pass through the screen 902a corresponding to the 1 st host or the screen 902e corresponding to the 5 th host, the relative interval is 2, that is, the aforementioned relative interval is known by switching the control object to the screen corresponding to the target host several times. The relative spacing can be calculated in this way for the other various arrangements of tv walls (e.g., two-dimensional arrangement or three-dimensional arrangement), which will not be described in detail herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art, having the benefit of the present disclosure, may make various forms without departing from the spirit of the application and the scope of the claims.

Claims

1. A wireless connection method for simultaneously maintaining a connection state with a plurality of hosts for a plurality of computer switches, the wireless connection method comprising:

selecting one of the hosts as a control object by the KVM switch;

respectively calculating the relative interval between the display picture corresponding to the control object and the display picture corresponding to the other hosts according to layout information;

correspondingly configuring the connection intervals between the hosts and the KVM switch according to the relative intervals; and

the hosts are used for wireless transmission according to corresponding one of a plurality of connecting intervals, wherein the size of each connecting interval is proportional to the size of each corresponding relative interval, and a basic connecting interval is included between the control object and the KVM switch and is smaller than the connecting intervals corresponding to the other hosts.

2. The wireless connection method of claim 1, further comprising:

when the control object is a first host, configuring a connection interval between the KVM switch and the first host as a first connection interval, wherein a display picture corresponding to the first host is a first picture; and

configuring the connection interval between the KVM switch and the second host as a second connection interval, wherein the display screen corresponding to the second host is a second screen;

the first picture is adjacent to the second picture, and the second connecting line interval is larger than the first connecting line interval.

3. The wireless connection method according to claim 2, further comprising:

configuring a connection interval between the KVM switch and the third host as a third connection interval, wherein:

the display picture corresponding to the third host is a third picture;

the first picture and the third picture are not adjacent; and

the third wire spacing is greater than the second wire spacing.

4. The wireless connection method according to claim 2, further comprising:

switching the control object from the first host to the second host;

configuring the connection line interval of the second host as the first connection line interval; and

and configuring the connection line interval of the first host as the second connection line interval.

5. The method of claim 1, wherein the display frames corresponding to the hosts form an operable desktop, the method further comprising:

providing a layout table, wherein the layout table defines a plurality of corresponding positions of the display pictures on the operable desktop;

the KVM switch calculates the link interval according to the corresponding positions; and

and storing the connection line interval in the layout table.

6. The wireless connection method of claim 1, further comprising:

and transmitting the connection interval to be configured to the corresponding host in the connection event response.

7. A KVM switch for connecting to a plurality of hosts, comprising:

the wireless transceiver module is in wireless connection with the hosts; and

the processor is connected with the wireless transceiver module, switches and selects one of the hosts as a control object, calculates a plurality of relative intervals corresponding to the display pictures corresponding to the hosts and the display pictures corresponding to the control object respectively according to layout information, and configures the connecting interval between the hosts and the wireless transceiver module correspondingly according to the relative intervals;

wherein, each connection interval between the host and the wireless transceiver module is used for wireless transmission;

the size of each connection interval is proportional to the corresponding size of each relative interval, wherein a basic connection interval is included between the control object and the KVM switch, and the basic connection interval is smaller than the connection interval corresponding to the other hosts.

8. The KVM switch of claim 7, wherein the plurality of hosts comprises a first host and a second host, wherein the first host corresponds to a first frame and the second host corresponds to a second frame, and wherein:

when the control object is switched to the second host, the processor configures a connecting line interval with the second host as a first connecting line interval, and configures the connecting line interval with the first host as a second connecting line interval.

9. The KVM switch of claim 8, wherein the plurality of hosts comprises a third host, wherein:

the third picture correspondingly displayed by the third host is not adjacent to the first picture;

the connection interval between the processor configuration and the third host is a third connection interval; and

the third wire spacing is greater than the second wire spacing.

10. The KVM switch of claim 7, wherein the wireless transceiver module transmits a link interval configured for a host to the host in response to a link event.