CN2609031Y - Switching device that can share keyboard screen mouse - Google Patents

Abstract

The utility model relates to a switching device of shareable keyboard screen mouse can make a plurality of computer mainframe can share a screen, a keyboard and a mouse, through the utility model discloses can decide arbitrary computer can be connected and use with this screen, keyboard and this mouse. The utility model comprises a processing unit with an artificial interface device, a translator, a multiplexer and a concentrator. The Human Interface Device processing unit can process the signal of Human Interface Device (HID). The interpreter has firmware for receiving the signal output from the processing unit of the manual interface device. The multiplexer is controlled by the output signal of the translator to determine which computer host is selected. The concentrator is controlled by the processing unit of the manual interface device to serve as the collection and the transmission of the signals.

Description

Switching device that can share keyboard screen mouse

technical field

The utility model relates to a switching device capable of sharing a keyboard, screen and mouse. The device enables several computer hosts to share a screen, a keyboard and a mouse, and decides which computer can be connected with the screen, keyboard and mouse. Especially utilize the switching device that hot key function and switch control coexist to select a certain computer.

Background technique

Computers have penetrated into every family and business, becoming an indispensable electronic product in modern life, and with the prevalence of computer multimedia, more peripheral products are needed as input and output devices, and due to the popularity of computers And the price is generally acceptable to users. In many cases, a user not only owns one personal computer, but may have many computers at the same time to meet his needs. The composition of a well-known personal computer is nothing more than a host computer, a display screen, a keyboard, a mouse, etc., and of course there may be a printer or other peripheral devices or multimedia equipment. The computer host, display screen, keyboard, and mouse are almost the most basic equipment, and if the user needs to use more than two personal computers at the same time, usually these equipments must occupy a certain amount of space when put together, especially the display screen. It takes up quite a lot of space. At this time, there is usually a way that although there are multiple sets of computer systems, only one screen, one keyboard and one mouse can be used, that is, multiple computer hosts share one screen, one keyboard and one mouse. mouse.

Moreover, in the general computer technology industry, in many test environments, it is often necessary to put a certain product under development on various computer systems for testing. At this time, it is not necessary to have several sets of computers. And only one display screen is needed to allow the tester to watch the test results of the product on each computer, that is, only one switching device is needed to switch between each computer to meet the needs.

Please refer to Figure 1, which is a schematic diagram of sharing one screen for existing multiple hosts. As shown in Fig. 1, generally want to share a screen 2 among a plurality of computer mainframes 10, 11, 12, need switch by a commonly called KVM switch (KVM switch) 5 (K: keyboard, V: screen, M : mouse), this KVM switcher 5 can switch between multiple computer hosts 10, 11, 12 at the same time, and only needs to provide a screen 2 to display the working status or execution results of each computer host 10, 11, 12 , and only use a keyboard 3 and a mouse 4 to allow the user to perform data input or control actions among multiple computer hosts 10, 11, 12 at the same time. That is to say, the keyboard 3 and the mouse 4 are shared input devices of the computer hosts 10, 11, 12, and the screen 2 is a shared output device of the computer hosts 10, 11, 12, and the KVM switch 5 provides each computer host 10, 12 The conversion interface of 11,12 also is to convey in the switched host computer by the data inputted by keyboard 3 and mouse 4 simultaneously, and also on the display information display screen 2 of this host computer switched to.

Please refer to FIG. 2 , which is an internal block diagram of a conventional electronic KVM switch. As shown in Figure 2, taking a switchable two computer hosts 10, 11 as an example, the KVM switch 5 is an electronic switching structure, so it is provided with a key switch 52, which can be passed through the control of the key switch 52. The KVM switch 5 switches between the two computer hosts 10, 11, and the multiplexer 50 provides the selection and switching of the hosts 10, 11. The disadvantage of this electronic type is that it is impossible to achieve the effect of switching through the control of the keyboard.

Please refer to FIG. 3 , which is an internal block diagram of a conventional keyed KVM switch. As shown in Figure 3, the KVM switch internally uses a master-slave control IC 62, an assembler 61, and a multiplexer 60. This prior art can be switched electronically by hotkeys on the keyboard 3. Control, without switching by switches, the master-slave control IC 62 is mainly responsible for intercepting and interpreting the data packets of the USB type transmitted from the keyboard 3, through the assembly of the relevant firmware instructions of the assembler 61 and The selection switching of the multiplexer 60 is to transmit the control commands or information from the keyboard 3 and the mouse 4 to the switched host. The disadvantage of this prior art is that the master-slave control IC 62 is very expensive, the design is complex, the associated cost is very high, and the correct functional operation must be completed with an external driver.

Contents of the invention

The purpose of the utility model is to provide a switching device that can share a keyboard, a screen and a mouse, so that several computer hosts can share one screen, one keyboard and one mouse. It is determined by the switching device that a certain computer can use the screen, keyboard and mouse. In the switching device, an integrated circuit IC capable of processing the signal of the human interface device (Human Interface Device; HID) is designed, and the signal of the USB interface is also used. The cable is connected with the mouse slot and the keyboard slot between the computers, and a keyboard and the mouse are connected with the USB interface. The keyboard control function switched by the hotkey on the keyboard and the coexistence of the mechanical switch function can have two options at the same time.

The above-mentioned purpose of the utility model is achieved in this way, a switch device that can share the keyboard, screen and mouse can make several computer hosts share a screen, a keyboard and a mouse, and can determine whether a certain computer can be connected with the switch by the switch device. The screen, the keyboard and the mouse are connected, including: a human interface device (HID) processing unit, which processes the signal of the human interface device (Human Interface Device; HID), and responds to the application program of the computer host to receive the The relative signal sent when the application program receives the control signal sent by the keyboard; a set of translators, which receive the signals output by the human interface device processing unit; a multiplexer, which receives the output signals of the assembler Control to determine which computer host can be connected to the screen, the keyboard and the mouse; a hub to accept the control of the human interface device (HID) processing unit and connect to the multiplexer, and connect to the keyboard and the mouse.

The utility model is described in detail below in conjunction with accompanying drawing.

Description of drawings

FIG. 1 is a schematic diagram of sharing screens for multiple computer hosts in the prior art.

FIG. 2 is a schematic diagram of an internal block of a conventional key electronic KVM switch.

FIG. 3 is a schematic diagram of an internal block of a conventional keyed electronic KVM switch.

Fig. 4 is a preferred embodiment of the block diagram of the present invention.

Fig. 5 is a detailed circuit diagram of the first preferred implementation of the present invention.

Fig. 6 is a detailed circuit diagram of the second preferred implementation of the present invention.

Description of drawing numbers: 10, 11, 12-computer host; 10'-computer host (Host) connection port; 2-screen; 3-keyboard; 4-mouse; 2'-screen connection port; 3'-keyboard connection port; 4'-mouse port; 5, 6-kvm switcher; 50, 60, 70-multitasking device; 51, 61, 71-assembler; 52, 73-switch; 62-master-slave control IC; 7 - the switching device of the present invention; 72 - the processing unit of the manual interface device; 74 - the hub.

Detailed ways

The utility model is a switch device (also called a KVM switch) that can share a keyboard, screen and mouse. It mainly allows several computer hosts to share one screen, one keyboard and one mouse. The function of the disclosed switching device can determine that a certain computer can use the screen, keyboard and mouse. That is to connect the input signal of the keyboard and mouse to the selected computer mainframe through the switching device, and connect the selected computer mainframe signal or processing result to the screen through the switching device disclosed in the utility model for display out.

The utility model is characterized in that an IC capable of processing signals of the manual interface device is designed in the switch device, and the switch device also utilizes the interface to process internal signals. And utilize the signal line of USB interface to be connected with the mouse slot between each computer and keyboard slot, and the utility model also utilizes USB interface to connect keyboard and mouse, therefore several computers just must be designed with several pairs of mouse and mouse. The keyboard's USB port is on the switch. Use the keyboard control function of the hotkey switch on the keyboard to determine which computer host is the selected object, and you can freely select any one of the connected computers as the object by using the hotkey switch. The selected computer host can accept the control or signal input of the keyboard and mouse, and only the selected computer host can display the internal processing results on the screen.

For convenience of description, the number of host computers connected to the utility model is 2. In fact, the utility model can be applied to more than 2 host computers, such as 4, 8, 16, etc.

Please refer to FIG. 4 , which is a schematic block diagram of a preferred embodiment of the present invention. As shown in FIG. 4 , the shared keyboard, screen and mouse switching device 7 of the present invention includes: a human interface device (HID) processing unit 72 , an assembler 71 , a multiplexer 70 and a hub 74 . The human interface device processing unit 72 can process the signal of the human interface device (Human Interface Device; HID), and can respond to the application program of the selected computer host 10 or computer host 11 to generate contact, so as to accept the application When the program receives the control signal sent by the keyboard 3, it will know which host computer 10 or host computer 11 is selected, and the signal sent by the keyboard 3 is the one to be selected. Select the control signal of a certain computer.

The assembler 71 accepts the signal output by the human interface device (HID) processing unit 72 to process the relevant instructions, usually the assembler 71

Firmware is stored to perform related actions. The multiplexer 70 accepts the output signal control of the assembler 71 to determine whether the main computer 10 or the main computer 11 can be connected to the screen 2 (the screen can be a CRT screen or a liquid crystal screen or other types of display screens), the keyboard 3 and the mouse 4. Signal, that is to determine which computer can accept the signal input of keyboard 3 and mouse 4, and send the processing result of the main computer to the screen 2. The hub accepts the control of the artificial interface device processing unit 72, and connects to the multiplexer 70, and connects to the screen 2, the keyboard 3 and the mouse 4. The hub can be used as a collective referral of the keyboard 3 and mouse 4 signals.

Therefore, when the user uses the hotkey to control the keyboard 3, the switching device 7 of the present invention processes the signal and switches to the selected computer host, and forms a connection between the selected computer host and the keyboard 3 and mouse 4. Therefore, the user can arbitrarily choose to be connected to the host computer 10 or the host computer 11. After selection (for example, the host computer 10 is selected), the host computer 10 accepts the control signal input by the user on the keyboard 3 and mouse 4 or Data, through the processing of the switching device 7, the host computer 10 is connected to the screen 2, so the status of the host computer 10 or calculation results can be displayed on the screen 2.

The artificial interface device processing unit 72 can be designed as an IC (or chip type) with 16 or 18 pins, and the artificial interface device processing unit 72 and the assembler 71 can also be integrated and designed in the same IC (or chip type). chip type), the design can be determined according to actual needs. With the design of the artificial interface device processing unit 72, in addition to the above-mentioned function of selecting the host computer, the problem of needing an external driver in the prior art can also be avoided. In addition, the above-mentioned keyboard 3, mouse 4, and the connection interface of the switch device 7 are USB interfaces, and the keyboard and mouse interfaces on the host computer 10, 11 are also connected to the switch device 7. The connection interface is a USB interface, which can cooperate with the manual interface device ( HID) processing unit 72 for calculation processing and signal transmission.

In addition, the utility model can also design the button switch 73 to manually control the selection of the computer mainframes 10, 11, so the utility model also has the function of manual control and can coexist with the keyboard hotkey control function without affecting each other's functions. Also be the feature of the present utility model.

Referring to FIG. 5 and FIG. 6 , the switching device 7 of the present invention that can share the keyboard, screen and mouse includes: a human interface device (HID) processing unit 72 , an assembler 71 , a multiplexer 70 and a hub 74 . The human interface device processing unit 72 can process the signal of the human interface device (Human Interface Device; HID), and can respond to the application program of the selected computer host 10 or computer host 11 to generate contact, so as to accept the application When the program receives the control signal sent by the keyboard 3, it will know which host computer 10 or host computer 11 is selected, and the signal sent by the keyboard 3 is the one to be selected. Select the control signal of a certain computer.

In addition, the computer host can be a personal computer (PC), an industrial computer, a server (server) host serving as a server function, or other types of computer hosts.

What should be emphasized here is that the artificial interface device processing unit used by the utility model can be in the form of an integrated circuit, and its cost is far lower than that of the master-slave control IC 62 used by the prior art in Fig. 3, usually its The cost can reach a gap of more than ten times, and the utility model can save the cost and improve the competitiveness of the product. Furthermore, the internal circuit structure of the utility model has a better and improved design, which eliminates the effect of the prior art that needs the cooperation of an external driver.

With the description of the above-mentioned preferred embodiments, the utility model provides the enhancement and improvement of new functions in addition to the original functions of the prior art. In addition to avoiding the common deficiencies of the prior art, it is useful for the use of Both convenience and cost savings are greatly improved.

The illustrations and detailed descriptions of the utility model are described in terms of preferred embodiments, and are only used to help users understand the implementation of the utility model, and are not intended to limit the scope of the utility model. After comprehending the spirit of the present utility model, those skilled in the art may make some modifications and equivalent changes without departing from the scope of the present utility model, but the protection scope of the present utility model shall be defined by the appended Claims determined.

Claims (10)

1. A switching device that can share the keyboard, screen and mouse, so that several computer hosts can share a screen, a keyboard and a mouse, and can determine that a certain computer can be connected to the screen, the keyboard and the mouse through the switching device, Features include: A human interface device (HID) processing unit, which processes the signal of the human interface device (Human Interface Device; HID), and responds to the application program of the computer host to accept when the application program receives the control signal sent by the keyboard The relative signal sent out when; a set of translators for receiving the signals output by the manual interface device processing unit; a multiplexer, controlled by the output signal of the assembler, to determine which computer host can be connected to the screen, the keyboard and the mouse; A hub accepts the control of the human interface device (HID) processing unit and connects with the multiplexer, and connects with the keyboard and the mouse. 2 . The switch device capable of sharing keyboard, screen and mouse as claimed in claim 1 , wherein the interface between the computer and the switch device is a USB interface. 3 . 3. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 1, wherein the interface between the keyboard, the mouse and the switching device is a USB interface. 4. The switching device for sharing keyboard, screen and mouse as claimed in claim 3, further comprising a switch, by which the switching device is controlled to determine whether a certain computer can communicate with the screen, the keyboard and the mouse connection. 5. The switching device capable of sharing keyboard, screen and mouse as claimed in claim 1, wherein said assembler stores firmware. 6. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 1, wherein the processing unit of the human interface device is an integrated circuit (IC). 7. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 1, wherein the processing unit of the human interface device and the assembler are integrated into an integrated circuit (IC). 8. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 1, wherein the processing unit of the human interface device is an integrated block with 18 pins. 9. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 4, wherein the processing unit of the human interface device is an integrated circuit (IC). 10. The switching device capable of sharing a keyboard, screen and mouse as claimed in claim 4, wherein the processing unit of the human interface device and the assembler are integrated into an integrated block.

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