CN112650397A - KVM switching method and KVM switching system - Google Patents
KVM switching method and KVM switching system Download PDFInfo
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- CN112650397A CN112650397A CN202011602908.1A CN202011602908A CN112650397A CN 112650397 A CN112650397 A CN 112650397A CN 202011602908 A CN202011602908 A CN 202011602908A CN 112650397 A CN112650397 A CN 112650397A
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- 241000699666 Mus <mouse, genus> Species 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
Abstract
The application discloses a KVM switching method and a KVM switching system, which do not need multiple sets of keyboards, video screens and mice to be matched with a multi-channel computer system, save electronic equipment and circuits, and realize two local and remote switching modes. The method comprises the following steps: acquiring at least two paths of input control signals of at least two paths of computer systems; when a local key operation or a remote instruction is received, selecting a current input control signal from at least two paths of input signals according to the local key operation or the remote instruction; and outputting the output display signal of the corresponding computer system according to the current input control signal.
Description
Technical Field
The present invention relates to the field of computers, and in particular, to a KVM switch method and a KVM switch system.
Background
The existing multi-channel computer system needs to be matched with a mouse, a keyboard and a display device in each channel. KVM is an abbreviation for Keyboard Video Mouse, which enables access and control of a computer by direct connection to Keyboard, Video and Mouse ports.
In a multi-channel computer system, the conventional KVM switch system needs multiple display interfaces, needs independent power supply, is large in size, has multiple wires and multiple lines, and cannot remotely control communication.
Disclosure of Invention
The invention aims to provide a KVM switching method and a KVM switching system, which do not need a plurality of sets of keyboards, video screens and mice to be matched with a plurality of computer systems, save electronic equipment and circuits and realize two local and remote switching modes.
The first aspect of the present invention provides a KVM switch method, including:
acquiring at least two paths of input control signals of at least two paths of computer systems;
when a local key operation or a remote instruction is received, selecting a current input control signal from at least two paths of input signals according to the local key operation or the remote instruction;
and outputting the output display signal of the corresponding computer system according to the current input control signal.
Further, before selecting the current input control signal from the at least two input signals according to a local key operation or a remote instruction, the method further includes:
sending detection signals to a local key and a remote port;
when a feedback signal of the local key is received, determining that the local key is normal;
when the feedback signal of the local key is not received, determining that the local key is abnormal;
when a feedback signal of the remote port is received, determining that the remote port is normal;
and when the feedback signal of the remote port is not received, determining that the remote port is abnormal.
Furthermore, when the local key is abnormal and the remote port is normal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when receiving the local key operation, abandoning the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting the current input control signal from the at least two paths of input signals according to the remote instruction.
Furthermore, when the local key is normal and the remote port is abnormal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when local key operation is received, selecting a current input control signal from at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
when a remote instruction is received, the remote instruction is discarded.
Furthermore, when the local key is normal and the remote port is normal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when local key operation is received, selecting a current input control signal from at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting the current input control signal from the at least two paths of input signals according to the remote instruction.
The present invention provides a KVM switch system, including:
the input module is used for acquiring at least two paths of input control signals of at least two paths of computer systems;
the FPGA switching module is used for selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction when the local key operation or the remote instruction is received;
and the output module is used for outputting the corresponding output display signal of the computer system according to the current input control signal.
Further, in the above-mentioned case,
the FPGA switching module is also used for sending detection signals to the local keys and the remote port;
the FPGA switching module is also used for determining that the local key is normal when receiving a feedback signal of the local key;
the FPGA switching module is also used for determining that the local key is abnormal when the feedback signal of the local key is not received;
the FPGA switching module is also used for determining that the remote port is normal when receiving a feedback signal of the remote port;
and the FPGA switching module is also used for determining that the remote port is abnormal when the feedback signal of the remote port is not received.
Furthermore, when the local key is abnormal and the remote port is normal,
the FPGA switching module is also used for giving up the local key operation when the local key operation is received;
or the like, or, alternatively,
and the FPGA switching module is also used for selecting the current input control signal from the at least two paths of input signals according to the remote instruction when the remote instruction is received.
Furthermore, when the local key is normal and the remote port is abnormal,
the FPGA switching module is also used for selecting a current input control signal from at least two paths of input signals according to local key operation when the local key operation is received;
or the like, or, alternatively,
and the FPGA switching module is also used for giving up the remote instruction when receiving the remote instruction.
Furthermore, when the local key is normal and the remote port is normal,
the FPGA switching module is also used for selecting a current input control signal from at least two paths of input signals according to local key operation when the local key operation is received;
or the like, or, alternatively,
and the FPGA switching module is also used for selecting the current input control signal from the at least two paths of input signals according to the remote instruction when the remote instruction is received.
Therefore, the KVM switching method of the invention obtains at least two input control signals of at least two computer systems, when a local key operation or a remote instruction is received, selects the current input control signal from the at least two input signals according to the local key operation or the remote instruction, and outputs the output display signal of the corresponding computer system according to the current input control signal. Compared with the existing KVM switching, the invention does not need multiple sets of keyboards, video screens and mice to be matched with a multi-channel computer system, saves electronic equipment and circuits, and realizes two local and remote switching modes.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart illustrating a KVM switch method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a KVM switch system according to an embodiment of the present invention.
Detailed Description
The application discloses a KVM switching method and a KVM switching system, which do not need multiple sets of keyboards, video screens and mice to be matched with a multi-channel computer system, save electronic equipment and circuits, and realize two local and remote switching modes.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the invention provides a KVM switch method, including:
101. acquiring at least two paths of input control signals of at least two paths of computer systems;
102. when a local key operation or a remote instruction is received, selecting a current input control signal from at least two paths of input signals according to the local key operation or the remote instruction;
103. and outputting the output display signal of the corresponding computer system according to the current input control signal.
In the embodiment of the invention, at least two input control signals of at least two computer systems are acquired by being connected with the input ports of at least two computer systems, and the switching function of the traditional KVM can be realized by local keys, for example, two keys sequentially switch a plurality of input sources according to the addition and subtraction sequence, so that one of the at least two input signals is selected as the current input control signal, or a serial port instruction, namely a remote instruction, is sent remotely, so that any one of a plurality of input sources can be switched conveniently, and particularly, any one of the plurality of computer systems can be remotely controlled by a WEB server. And outputting the output display signal of the corresponding computer system according to the current input control signal. Multiple sets of keyboards, video screens and mice are not needed to be matched with a multi-channel computer system, so that electronic equipment and circuits are saved, and two local and remote switching modes are realized.
Optionally, with reference to the embodiment shown in fig. 1, in some embodiments of the present invention, before selecting the current input control signal from the at least two input signals according to a local key operation or a remote instruction, the method further includes:
sending detection signals to a local key and a remote port;
when a feedback signal of the local key is received, determining that the local key is normal;
when the feedback signal of the local key is not received, determining that the local key is abnormal;
when a feedback signal of the remote port is received, determining that the remote port is normal;
and when the feedback signal of the remote port is not received, determining that the remote port is abnormal.
In the embodiment of the invention, before receiving the local key operation or the remote instruction, whether the local key and the remote port are normal or not needs to be determined, so that the detection signal needs to be sent to the local key and the remote port, if the detection signal is normal, the signal can be fed back, and if the detection signal is abnormal, the signal cannot be fed back. When a feedback signal of the local key is received, determining that the local key is normal; when the feedback signal of the local key is not received, determining that the local key is abnormal; when a feedback signal of the remote port is received, determining that the remote port is normal; and when the feedback signal of the remote port is not received, determining that the remote port is abnormal.
Optionally, in combination with the embodiment shown in fig. 1, in some embodiments of the present invention, when the local key is abnormal and the remote port is normal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when receiving the local key operation, abandoning the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting the current input control signal from the at least two paths of input signals according to the remote instruction.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the embodiment are combined, if the local key is abnormal, the remote port is normal, and when the local key operation is received, the local key operation is abandoned; or when a remote instruction is received, selecting the current input control signal from the at least two input signals according to the remote instruction.
Optionally, in combination with the embodiment shown in fig. 1, in some embodiments of the present invention, when the local key is normal and the remote port is abnormal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when local key operation is received, selecting a current input control signal from at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
when a remote instruction is received, the remote instruction is discarded.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the above embodiment are combined, if the local key is normal, the remote port is abnormal, and when the local key operation is received, the current input control signal is selected from at least two paths of input signals according to the local key operation; or, when a remote instruction is received, the remote instruction is discarded.
Optionally, in some embodiments of the present invention, in combination with the embodiment shown in fig. 1, when the local key is normal and the remote port is normal,
selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction, and the method comprises the following steps:
when local key operation is received, selecting a current input control signal from at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting the current input control signal from the at least two paths of input signals according to the remote instruction.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the above embodiment are combined, if the local key is normal, the remote port is normal, and when the local key operation is received, the current input control signal is selected from at least two paths of input signals according to the local key operation; or when a remote instruction is received, selecting the current input control signal from the at least two input signals according to the remote instruction.
As shown in fig. 2, an embodiment of the present invention provides a KVM switch system, including:
an input module 201, configured to obtain at least two input control signals of at least two computer systems;
the FPGA switching module 202 is used for selecting a current input control signal from at least two paths of input signals according to local key operation or a remote instruction when the local key operation or the remote instruction is received;
the output module 203 is configured to output an output display signal of the corresponding computer system according to the current input control signal.
In the embodiment of the present invention, the input module 201 is connected to the input ports of the at least two computer systems to obtain the at least two input control signals of the at least two computer systems, and the FPGA switching module 202 can implement the switching function of the conventional KVM by using the local buttons, for example, two buttons sequentially switch a plurality of input sources according to an addition and subtraction order, thereby selecting one of the at least two input signals as the current input control signal, or the FPGA switching module 202 can switch any one of the plurality of input sources at will by sending a serial command, i.e., a remote command, and specifically can remotely control any one of the plurality of computer systems through the WEB service end. The output module 203 outputs the output display signal of the corresponding computer system according to the current input control signal. Multiple sets of keyboards, video screens and mice are not needed to be matched with a multi-channel computer system, so that electronic equipment and circuits are saved, and two local and remote switching modes are realized.
Alternatively, in conjunction with the embodiment shown in fig. 2, in some embodiments of the invention,
the FPGA switching module 202 is further configured to send a detection signal to the local key and the remote port;
the FPGA switching module 202 is further configured to determine that the local key is normal when a feedback signal of the local key is received;
the FPGA switching module 202 is further configured to determine that the local key is abnormal when the feedback signal of the local key is not received;
the FPGA switching module 202 is further configured to determine that the remote port is normal when receiving a feedback signal of the remote port;
the FPGA switching module 202 is further configured to determine that the remote port is abnormal when the feedback signal of the remote port is not received.
In the embodiment of the present invention, before receiving a local key operation or a remote instruction, the FPGA switching module 202 needs to determine whether the local key and the remote port are normal, so that a detection signal needs to be sent to the local key and the remote port, and if the local key and the remote port are normal, the signal may be fed back, and if the local key and the remote port are not normal, the signal may not be fed back. When a feedback signal of the local key is received, determining that the local key is normal; when the feedback signal of the local key is not received, determining that the local key is abnormal; when a feedback signal of the remote port is received, determining that the remote port is normal; and when the feedback signal of the remote port is not received, determining that the remote port is abnormal.
Optionally, in combination with the embodiment shown in fig. 2, in some embodiments of the present invention, when the local key is abnormal and the remote port is normal,
the FPGA switching module 202 is further configured to abandon the local key operation when the local key operation is received;
or the like, or, alternatively,
the FPGA switching module 202 is further configured to select a current input control signal from the at least two input signals according to the remote instruction when the remote instruction is received.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the embodiment are combined, if the local key is abnormal, the remote port is normal, and when the local key operation is received, the local key operation is abandoned; or when a remote instruction is received, selecting the current input control signal from the at least two input signals according to the remote instruction.
Optionally, in combination with the embodiment shown in fig. 2, in some embodiments of the present invention, when the local key is normal and the remote port is abnormal,
the FPGA switching module 202 is further configured to select a current input control signal from the at least two input signals according to a local key operation when the local key operation is received;
or the like, or, alternatively,
the FPGA switching module 202 is further configured to give up the remote instruction when the remote instruction is received.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the above embodiment are combined, if the local key is normal, the remote port is abnormal, and when the local key operation is received, the current input control signal is selected from at least two paths of input signals according to the local key operation; or, when a remote instruction is received, the remote instruction is discarded.
Optionally, in some embodiments of the invention, in combination with the embodiment shown in fig. 2, when the local key is normal and the remote port is normal,
the FPGA switching module 202 is further configured to select a current input control signal from the at least two input signals according to a local key operation when the local key operation is received;
or the like, or, alternatively,
the FPGA switching module 202 is further configured to select a current input control signal from the at least two input signals according to the remote instruction when the remote instruction is received.
In the embodiment of the invention, the normal conditions of the local key and the remote port in the above embodiment are combined, if the local key is normal, the remote port is normal, and when the local key operation is received, the current input control signal is selected from at least two paths of input signals according to the local key operation; or when a remote instruction is received, selecting the current input control signal from the at least two input signals according to the remote instruction.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It should also be noted that 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A KVM switch method, comprising:
acquiring at least two paths of input control signals of at least two paths of computer systems;
when a local key operation or a remote instruction is received, selecting a current input control signal from the at least two paths of input signals according to the local key operation or the remote instruction;
and outputting the output display signal of the corresponding computer system according to the current input control signal.
2. The method according to claim 1, wherein before selecting a current input control signal from the at least two input signals according to the local key operation or the remote command, further comprising:
sending detection signals to a local key and a remote port;
when a feedback signal of the local key is received, determining that the local key is normal;
when the feedback signal of the local key is not received, determining that the local key is abnormal;
when a feedback signal of the remote port is received, determining that the remote port is normal;
and when the feedback signal of the remote port is not received, determining that the remote port is abnormal.
3. The method of claim 2, wherein when the local key is abnormal and the remote port is normal,
the selecting a current input control signal from the at least two input signals according to the local key operation or the remote instruction includes:
when receiving a local key operation, giving up the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting a current input control signal from the at least two paths of input signals according to the remote instruction.
4. The method of claim 2, wherein when the local key is normal and the remote port is abnormal,
the selecting a current input control signal from the at least two input signals according to the local key operation or the remote instruction includes:
when local key operation is received, selecting a current input control signal from the at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
when a remote instruction is received, the remote instruction is discarded.
5. The method of claim 2, wherein when the local key is normal and the remote port is normal,
the selecting a current input control signal from the at least two input signals according to the local key operation or the remote instruction includes:
when local key operation is received, selecting a current input control signal from the at least two paths of input signals according to the local key operation;
or the like, or, alternatively,
and when a remote instruction is received, selecting a current input control signal from the at least two paths of input signals according to the remote instruction.
6. A KVM switch system, comprising:
the input module is used for acquiring at least two paths of input control signals of at least two paths of computer systems;
the FPGA switching module is used for selecting a current input control signal from the at least two paths of input signals according to local key operation or a remote instruction when the local key operation or the remote instruction is received;
and the output module is used for outputting the output display signal of the corresponding computer system according to the current input control signal.
7. The system of claim 6,
the FPGA switching module is also used for sending detection signals to the local keys and the remote port;
the FPGA switching module is further used for determining that the local key is normal when a feedback signal of the local key is received;
the FPGA switching module is further used for determining that the local key is abnormal when the feedback signal of the local key is not received;
the FPGA switching module is further used for determining that the remote port is normal when a feedback signal of the remote port is received;
the FPGA switching module is further used for determining that the remote port is abnormal when the feedback signal of the remote port is not received.
8. The system of claim 7, wherein when the local key is abnormal and the remote port is normal,
the FPGA switching module is also used for giving up the local key operation when the local key operation is received;
or the like, or, alternatively,
and the FPGA switching module is also used for selecting the current input control signal from the at least two paths of input signals according to the remote instruction when the remote instruction is received.
9. The system of claim 7, wherein when the local key is normal and the remote port is abnormal,
the FPGA switching module is also used for selecting a current input control signal from the at least two paths of input signals according to local key operation when the local key operation is received;
or the like, or, alternatively,
the FPGA switching module is also used for giving up the remote instruction when receiving the remote instruction.
10. The system of claim 7, wherein when the local key is normal and the remote port is normal,
the FPGA switching module is also used for selecting a current input control signal from the at least two paths of input signals according to local key operation when the local key operation is received;
or the like, or, alternatively,
and the FPGA switching module is also used for selecting the current input control signal from the at least two paths of input signals according to the remote instruction when the remote instruction is received.
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| CN105491413A (en) * | 2014-10-07 | 2016-04-13 | 三星电子株式会社 | Display apparatus, display system, and display method |
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| CN1461145A (en) * | 2002-05-17 | 2003-12-10 | Lg电子株式会社 | Display system and method for controlling display system |
| CN101634904A (en) * | 2008-07-25 | 2010-01-27 | 宏正自动科技股份有限公司 | Kvm system |
| JP2011022639A (en) * | 2009-07-13 | 2011-02-03 | Ratoc Systems Inc | Kvm switching device and kvm switching method |
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