CN115494972B - KVM switch with data cross copy function - Google Patents
KVM switch with data cross copy function Download PDFInfo
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- CN115494972B CN115494972B CN202211173379.7A CN202211173379A CN115494972B CN 115494972 B CN115494972 B CN 115494972B CN 202211173379 A CN202211173379 A CN 202211173379A CN 115494972 B CN115494972 B CN 115494972B
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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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
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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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
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
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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
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03543—Mice or pucks
-
- 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
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Information Transfer Systems (AREA)
Abstract
The invention provides a KVM switch with a data copying function, comprising: the device comprises a first uplink port, a second uplink port, a switching key, a controller electrically connected with the switching key, a first hub electrically connected with the first uplink port, a second hub electrically connected with the second uplink port, a copy chip electrically connected with the first hub and the second hub respectively, a first USB switcher electrically connected with the first hub and the second hub respectively, and an expansion module electrically connected with the first USB switcher. The first hub, the second hub and the mutually copied chips are matched to form a link channel of the first uplink port and the second uplink port, so that data transmission between the two devices is realized. And the first hub and the second hub can be used for matching with the expansion equipment without influencing the use of the first uplink port or the second uplink port.
Description
Technical Field
The present invention relates to the field of computer peripheral electronic products, and more particularly, to a KVM switch with a data copying function.
Background
As is well known, a KVM switch is a computer management device by which multiple computers can be controlled by a set of keyboard, mouse, and display, with a hub inside for the mouse and keyboard, a video converter for outputting video signals from the computers to the display, and a switching module for switching, so that the hub and the video converter are both used with the same computer. However, at present, the existing switcher cannot directly copy data among a plurality of computers, and further needs to use a USB flash disk to copy data among two or more computers, so that the operation is complex.
Accordingly, the prior art is subject to improvement and development.
Disclosure of Invention
The invention aims to provide a KVM switch with a data copying function, which is used for solving the problem that the prior switch does not have the function of copying data among a plurality of computers.
The technical scheme of the invention is as follows: a KVM switch having a data cross-copy function, comprising: the device comprises a first uplink port, a second uplink port, a switching key, a controller electrically connected with the switching key, a first hub electrically connected with the first uplink port, a second hub electrically connected with the second uplink port, a copy chip electrically connected with the first hub and the second hub respectively, a first USB switcher electrically connected with the first hub and the second hub respectively, and an expansion module electrically connected with the first USB switcher;
the first uplink port is used for connecting equipment I, the second uplink port is used for connecting equipment II, the controller is used for detecting a key signal of a switching key and outputting a first switching signal to the first USB switcher according to the key signal, and the first USB switcher conducts the expansion module with the first hub or the second hub according to the first switching signal;
the expansion module is used for connecting a mouse and a keyboard, the expansion module is electrically connected with a first hub through a first USB switcher, the expansion module is used for transmitting electric signals input by the mouse and the keyboard to the first USB switcher, the first USB switcher is used for transmitting signals input by the expansion module to the first hub or a second hub, the first hub is used for outputting signals input by the first USB switcher to a first device through a first uplink port, and the second hub is used for outputting signals input by the first USB switcher to a second device through a second uplink port;
when the data of the first device is copied to the second device, the expansion module is electrically connected with the second hub through the first USB switcher, a first electric signal for executing a data copying instruction is input by the mouse or the keyboard, the first electric signal is sequentially transmitted to the first device through the expansion module, the first USB switcher, the first hub and the first uplink port, and the first device sequentially transmits the data to be copied to the second device through the first uplink port, the first hub, the copying chip, the second hub and the second uplink port according to the first electric signal;
or when the data of the second device is copied to the first device, the mouse or the keyboard inputs a second electric signal for executing the data copying instruction, the second electric signal is sequentially transmitted to the second device through the expansion module, the first USB switcher, the second hub and the second uplink port, and the second device sequentially transmits the data to be copied to the first device through the second uplink port, the second hub, the copying chip, the first hub and the first uplink port according to the second electric signal.
Further, the expansion module further comprises a video switcher electrically connected with the controller, the first uplink port and the second uplink port respectively, and the expansion module comprises a first video interface electrically connected with the video switcher.
Further, the expansion module includes: and a third hub electrically connected to the first USB switch, and a plurality of first USB interfaces electrically connected to the third hub.
Further, the expansion module further comprises a second USB switcher electrically connected with the controller, the first hub and the second hub respectively, and the expansion module further comprises an audio chip electrically connected with the second USB switcher and an audio interface electrically connected with the audio chip.
Further, a video converter is connected between the first video interface and the video switcher, and the first video interface is an HDMI interface.
Further, the expansion module further comprises a DP interface electrically connected with the video converter.
Further, when the first uplink port is used for connecting a notebook computer, a first signal change-over switch is connected between the video switcher and the first uplink port, the first signal change-over switch is further electrically connected with a first hub, the first signal change-over switch is used for dividing a signal output by the first uplink port into a USB3.0 signal and a video signal, the first signal change-over switch is used for transmitting the USB3.0 signal to the first hub, a USB2.0 signal of the first uplink port is transmitted to the first hub, and the first signal change-over switch is used for transmitting the video signal to the video switcher.
Further, when the second uplink port is used for connecting a notebook computer, a second signal change-over switch is connected between the video switcher and the second uplink port, the second signal change-over switch is further electrically connected with a second hub, the second signal change-over switch is used for dividing signals output by the second uplink port into USB3.0 signals and video signals, the second signal change-over switch is used for transmitting the USB3.0 signals to the second hub, USB2.0 signals of the second uplink port are transmitted to the second hub, and the second signal change-over switch is used for transmitting the video signals to the video switcher.
Further, the first USB switch includes a first USB2.0 signal switch and a first USB3.0 signal switch, the first USB2.0 signal switch is electrically connected to the first hub, the second hub and the third hub, respectively, and the first USB3.0 signal switch is electrically connected to the first hub, the second hub and the third hub, respectively.
Further, the KVM switch further includes a power interface and a first power circuit electrically connected to the power interface, where the first power circuit is configured to rectify, filter, and convert a first power input by the power interface, and then electrically connect the first power to the controller, the first signal switch, the second signal switch, the video switch, the first USB2.0 signal switch, the second USB3.0 signal switch, the first hub, the second hub, the third hub, the first USB interface, the controller, the first video interface, the second video interface, the audio chip, and the cross copy chip, respectively.
The invention has the beneficial effects that: compared with the prior art, the method and the device have the advantages that the mutual copying chip is configured to form the mutual copying channel between the first device and the second device, so that the mutual copying of the data between the first device and the second device is realized, and the user can conveniently transmit and use the data of the two devices. In order to form a copying channel between the first device and the second device and realize a KVM switching function, the invention expands one group of USB channels on the first uplink port into a plurality of groups of USB channels through the first hub, and expands one group of USB channels on the second uplink port into a plurality of groups of USB channels through the second hub, wherein one group of USB channels expanded by the first hub and the second hub are used for copying chips, and other USB channels are used for the first USB switcher, so that the data copying between the two devices is realized while the KVM switcher function is not influenced.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic block diagram of a power interface of the present invention for powering a first upstream port and a second upstream port;
fig. 3 is a schematic block diagram of the first upstream port and the second upstream port of the present invention, which are suitable for a notebook computer and remove a cross-copy chip.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1-3, a KVM switch with data copying function in an embodiment of the present invention is shown.
Referring to fig. 1, the KVM switch with a data cross copy function includes: the device comprises a first uplink port 1, a second uplink port 2, a switching key 71, a controller 7 electrically connected with the switching key 71, a first hub 3 electrically connected with the first uplink port 1, a second hub 4 electrically connected with the second uplink port 2, mutually copied chips 5 electrically connected with the first hub 3 and the second hub 4 respectively, a first USB switcher 6 electrically connected with the first hub 3 and the second hub 4 respectively, and an expansion module 8 electrically connected with the first USB switcher 6.
The expansion module 8 is used for connecting a mouse, a keyboard, a USB flash disk, a printer and the like, the first uplink port 1 is used for connecting a first device, and the second uplink port 2 is used for connecting a second device, wherein the first device and the second device can be desktop computers, notebook computers, mobile phones, flat boards and the like.
The controller 7 is configured to detect a key signal of the switch key 71 and output a first switch signal to the first USB switch 6 according to the key signal, and the first USB switch 6 turns on the expansion module 8 and the first hub 3 or the second hub 4 according to the first switch signal. The expansion module 8 is configured to transmit electrical signals input by the mouse and the keyboard to the first USB switch 6, the first USB switch 6 is configured to transmit signals input by the expansion module 8 to the first hub 3 or the second hub 4, the first hub 3 is configured to output signals input by the first USB switch 6 to the first device through the first uplink port 1, and the second hub 4 is configured to output signals input by the first USB switch 6 to the second device through the second uplink port 2. Thus, by pressing the switch key 71, the expansion module 8 can be controlled to be used in cooperation with the first uplink port 1 or the second uplink port 2, so that devices such as a mouse and a keyboard can be used in cooperation with the first device or the second device.
When the data of the first device is copied to the second device, the expansion module 8 is electrically connected with the first hub 3 through the first USB switch 6, so that the expansion module 8 is matched with the first device for use. The mouse or the keyboard inputs a first electric signal for executing a data copying instruction, the first electric signal is sequentially transmitted to the first equipment through the expansion module 8, the first USB switcher 6, the first hub 3 and the first uplink port 1, and the first equipment sequentially transmits data to be copied to the second equipment through the first uplink port 1, the first hub 3, the copying chip 5, the second hub 4 and the second uplink port 2 according to the first electric signal so as to realize the data transmission of the first equipment to the second equipment.
When the data of the second device is copied to the first device, the expansion module 8 is electrically connected with the second hub 4 through the first USB switch 6, so that the expansion module 8 is matched with the second device for use. The mouse or the keyboard inputs a second electric signal for executing the data copying instruction, the second electric signal is sequentially transmitted to the second equipment through the expansion module 8, the first USB switcher 6, the second hub 4 and the second uplink port 2, and the second equipment sequentially transmits data to be copied to the first equipment through the second uplink port 2, the second hub 4, the copying chip 5, the first hub 3 and the first uplink port 1 according to the second electric signal so as to realize the data transmission of the second equipment to the first equipment.
The invention realizes that a copying channel is formed between the first equipment and the second equipment by configuring the copying chip 5 so as to realize the copying of the data between the first equipment and the second equipment, thereby being convenient for users to transmit and use the data of the two equipment. In order to form a copying channel between the first device and the second device and realize a KVM switching function, the invention expands a group of USB channels on the first uplink port 1 into a plurality of groups of USB channels through the first hub 3, and expands a group of USB channels on the second uplink port 2 into a plurality of groups of USB channels through the second hub, wherein one group of USB channels expanded by the first hub 3 and the second hub 4 are used by copying chips 5, and other USB channels are used by the first USB switcher 6, so that the data copying between the two devices is realized while the functions of the KVM switcher are not influenced.
Specifically, a copy driver is arranged in the copy chip, when the first uplink port 1 and the second uplink port 2 are respectively connected with the first device and the second device, the copy chip sends a first driver to the first device through the first hub 3 and the first uplink port 1, and sends a second driver to the second device through the second hub 4 and the second uplink port 2, the first device installs the first driver, and the second device installs the second driver. When the data of the first device is copied to the second device, the data to be copied of the first device can be dragged into the first driver, and the copied data can be transmitted to the second driver on the second device through the first uplink port 1, the first hub 3, the cross copy chip 5, the second hub 4 and the second uplink port 2. On the contrary, when the data of the first device is copied to the second device, the data to be copied of the second device can be dragged into the second driver, and the copied data can be transmitted to the first driver on the first device through the second uplink port 2, the second hub 4, the cross copy chip 5, the first hub 3 and the first uplink port 1, so as to realize the copying of the data.
Specifically, the cross-copy chip 5 may be an OTI7300 type chip.
Referring to FIG. 2, in one embodiment, the KVM switch further includes a power interface 9, a PD control chip 10, a first fast charge protocol chip 13 and a first switching tube circuit 12. The PD control chip 10 is electrically connected with the CC channels of the first uplink port 1, so as to implement communication with the first device. The first fast charge protocol chip 13 is electrically connected with the PD control chip 10 and the first switching tube circuit 12, respectively, and the first switching tube circuit 12 is also electrically connected with the power interface 9 and the first upstream port 1.
The PD control chip 10 is configured to detect whether the accessed device one has a fast charging function through the first uplink port 1, and when the PD control chip 10 detects that the device one has the fast charging function, the PD control chip feeds back a first signal to the first fast charging protocol chip 13, the first fast charging protocol chip 13 controls the first switching tube circuit 12 to be turned on according to the first signal, and the first switching tube circuit 12 is turned on to output a power input by the power interface 9 to the first uplink port 1, so as to realize outputting of the fast charging power to the device one.
In one embodiment, the KVM switch further comprises a second fast-charge protocol chip 23 and a second switching tube circuit 22. The PD control chip 10 is electrically connected with the CC channels of the second uplink port 2, so as to implement communication with the second device. The second fast charge protocol chip 23 is electrically connected to the PD control chip 10 and the second switching tube circuit 22, respectively, and the second switching tube circuit 22 is also electrically connected to the power interface 9 and the second upstream port 2.
The PD control chip 10 is configured to detect whether the accessed device two has a fast charging function through the second uplink port 2, and when the PD control chip 10 detects that the device two has the fast charging function, it feeds back a second signal to the second fast charging protocol chip 23, and the second fast charging protocol chip 23 controls the second switching tube circuit 22 to be turned on according to the second signal, where the second switching tube circuit 22 is turned on to output the power input by the power interface 9 to the second uplink port 2, so as to output the fast charging power to the device two.
Based on this, when the power interface 9 is powered on, the PD control chip 10 can output the fast charging power to the device one and the device two through the first fast charging protocol chip 13 and the second fast charging protocol chip 23, respectively. Specifically, the PD control chip 10 may be a chip of the FL7112 model, and the first and second fast charging protocol chips 13 and 23 may be chips of the SC8886 model.
Specifically, the first switching tube circuit 12 may include one or more first switching tubes, where a gate is connected to the first fast charging protocol chip 13, a source is connected to the first uplink port 1, and a drain is connected to the power interface 9, so that the first fast charging protocol chip 13 can charge the device one by controlling the first switching tube to be turned on. The second switching tube circuit 22 may include one or more second switching tubes, and the gate is connected to the second fast charging protocol chip 23, the source is connected to the second upstream port 2, and the drain is connected to the power interface 9, so that the second fast charging protocol chip 23 can charge the second device by controlling the second switching tube to be turned on.
Referring to fig. 3, in an embodiment, the expansion module 8 further includes a video switcher 82 electrically connected to the controller 7, the first upstream port 1 and the second upstream port 2, respectively, and the expansion module 8 includes a first video interface 823 electrically connected to the video switcher 82. The controller 7 outputs a first switch signal to the video switcher 82 according to the key signal, and the video switcher 82 conducts the expansion module 8 with the first uplink port 1 or the second uplink port 2 according to the first switch signal, namely, the video signal output by the first device is output to the display screen to be played through the first uplink port 1, the video switcher 82 and the first video interface 823, or the video signal output by the second device is output to the display screen to be played through the second uplink port 2, the video switcher 82 and the first video interface 823. Thereby, switching of video can be achieved by the switching key 71.
In an embodiment, a video converter 821 is connected between the first video interface 823 and the video switcher 82, the first video interface 823 is an HDMI interface, and the video converter 821 is configured to convert an input DP signal into an HDMI signal and output the HDMI signal from the HDMI interface.
In one embodiment, expansion module 8 also includes a DP interface 822 electrically coupled to video converter 821. In this embodiment, the video converter 821 is configured to divide the DP video signal output from the video switcher 82 into two paths, one path directly outputs the DP interface 822, and the other path converts the DP signal into an HDMI signal and outputs the HDMI signal from the HDMI interface, so as to realize expansion of the two video interfaces for users.
In one embodiment, expansion module 8 comprises: a third hub 81 electrically connected to the first USB switch 6, and a plurality of first USB interfaces 811 electrically connected to the third hub 81. The first USB interface 811 is used for connecting a keyboard, a mouse, a USB disk, a printer, etc., and the first USB switch 6 connects the first hub 3 to the third hub 81 or connects the second hub 4 to the third hub 81 according to the first switching signal, so that the keyboard, the mouse, the USB disk, and the first device or the second device can be switched for use by the switching key 71.
In an embodiment, the expansion module 8 further includes a second USB switch 83 electrically connected to the controller 7, the first hub 3, and the second hub 4, respectively, and the expansion module 8 further includes an audio chip 831 electrically connected to the second USB switch 83 and an audio interface 832 electrically connected to the audio chip 831.
The audio interface 832 is used to connect headphones, speakers, etc. The controller 7 also outputs a first switching signal to the second USB switch 83 according to the key signal, and the second USB switch 83 turns on the audio chip 831 to the first hub 3 or the second hub 4 according to the first switching signal. In this way, the audio signal output by the first device is output to the earphone or the speaker through the first uplink port 1, the first hub 3, the second USB switcher 83 and the audio interface 832 for playing, or the audio signal output by the first device is output to the earphone or the speaker through the first uplink port 1, the first hub 3, the second USB switcher 83 and the audio interface 832 for playing, so as to realize the switching of the audio signal.
In an embodiment, when the first uplink port 1 is used for connecting a notebook computer, a first signal switch 11 is connected between the video switcher 82 and the first uplink port 1, the first signal switch 11 is further electrically connected with the first hub 3, the first signal switch 11 is used for dividing a signal output by the first uplink port 1 into a USB3.0 signal and a video signal, the first signal switch 11 is used for transmitting the USB3.0 signal to the first hub 3, and the first signal switch 11 is used for transmitting the video signal to the video switcher 82. In addition, the USB2.0 signal output by the first uplink port 1 is directly and separately transmitted to the first hub 3, so that the device can realize the transmission of the USB2.0 signal, the USB3.0 signal and the video signal through the first uplink port 1, and the first uplink port 1 of the KVM switch device of the present invention is suitable for a notebook computer.
In an embodiment, when the second upstream port 2 is used for connecting a notebook computer, a second signal switch 21 is connected between the video switcher 82 and the second upstream port 2, the second signal switch 21 is further electrically connected with the second hub 4, the second signal switch 21 is used for dividing the signal output by the second upstream port 2 into a USB3.0 signal and a video signal, the second signal switch 21 is used for transmitting the USB3.0 signal to the second hub 4, and the second signal switch 21 is used for transmitting the video signal to the video switcher 82. In addition, the USB2.0 signal output by the second upstream port 2 is directly and separately transmitted to the second hub 4, so that the second device can realize the transmission of the USB2.0 signal, the USB3.0 signal and the video signal through the second upstream port 2, and the second upstream port 2 of the KVM switch device of the present invention is suitable for use in a notebook computer.
Specifically, in the above embodiment, the first USB switch 6 includes the first USB2.0 signal switch 62 and the first USB3.0 signal switch 63, the first USB2.0 signal switch 62 is electrically connected to the first hub 3, the second hub 4 and the third hub 81, respectively, and the first USB3.0 signal switch 63 is electrically connected to the first hub 3, the second hub 4 and the third hub 81, respectively. The first USB2.0 signal switch 62 is configured to switch a set of USB2.0 signals output from the first hub 3 and the second hub 4, and the first USB3.0 signal switch 63 is configured to switch a set of USB3.0 signals output from the first hub 3 and the second hub 4.
The KVM switch further comprises a first power circuit 91 electrically connected to the power interface 9. The first power circuit 91 is configured to rectify, filter, and convert a first power input from the power interface 9, and then electrically connect the first power to the controller 7, the first signal switch 11, the second signal switch 21, the video switch 82, the first USB2.0 signal switch 62, the second USB3.0 signal switch, the first hub 3, the second hub 4, the third hub 81, the first USB interface 811, the controller 7, the first video interface 823, the second video interface, the audio chip 831, and the inter-copy chip 5, respectively.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (10)
1. A KVM switch having a data cross-copy function, comprising: the device comprises a first uplink port, a second uplink port, a switching key, a controller electrically connected with the switching key, a first hub electrically connected with the first uplink port, a second hub electrically connected with the second uplink port, a copy chip electrically connected with the first hub and the second hub respectively, a first USB switcher electrically connected with the first hub and the second hub respectively, and an expansion module electrically connected with the first USB switcher;
the first uplink port is used for connecting equipment I, the second uplink port is used for connecting equipment II, the controller is used for detecting a key signal of a switching key and outputting a first switching signal to the first USB switcher according to the key signal, and the first USB switcher conducts the expansion module with the first hub or the second hub according to the first switching signal;
the expansion module is used for connecting a mouse and a keyboard, the expansion module is used for transmitting electric signals input by the mouse and the keyboard to a first USB switcher, the first USB switcher is used for transmitting signals input by the expansion module to a first hub or a second hub, the first hub is used for outputting signals input by the first USB switcher to a first device through a first uplink port, and the second hub is used for outputting signals input by the first USB switcher to a second device through a second uplink port;
when the data of the first device is copied to the second device, the expansion module is electrically connected with the first hub through the first USB switcher, a first electric signal for executing a data copying instruction is input by the mouse or the keyboard, the first electric signal is sequentially transmitted to the first device through the expansion module, the first USB switcher, the first hub and the first uplink port, and the first device sequentially transmits the data to be copied to the second device through the first uplink port, the first hub, the copying chip, the second hub and the second uplink port according to the first electric signal;
or when the data of the second device is copied to the first device, the expansion module is electrically connected with the second hub through the first USB switcher, a second electric signal for executing a data copying instruction is input by the mouse or the keyboard, the second electric signal is sequentially transmitted to the second device through the expansion module, the first USB switcher, the second hub and the second uplink port, and the second device sequentially transmits the data to be copied to the first device through the second uplink port, the second hub, the copying chip, the first hub and the first uplink port according to the second electric signal;
the KVM switch further comprises a power interface, a PD control chip, a first fast charge protocol chip, a first switching tube circuit, a second fast charge protocol chip and a second switching tube circuit, wherein the PD control chip is electrically connected with a CC channel of a first uplink port and is communicated with equipment I, the first fast charge protocol chip is electrically connected with the PD control chip and the first switching tube circuit, and the first switching tube circuit is also electrically connected with the power interface and the first uplink port; the PD control chip is electrically connected with the CC channel of the second uplink port and is communicated with the second equipment, the second fast charging protocol chip is electrically connected with the PD control chip and the second switching tube circuit, and the second switching tube circuit is also electrically connected with the power interface and the second uplink port.
2. The KVM switch with data cross-copy function of claim 1, wherein the expansion module further comprises a video switch electrically connected to the controller, the first upstream port and the second upstream port, respectively, and the expansion module comprises a first video interface electrically connected to the video switch.
3. The KVM switch with data cross-copy function of claim 2, wherein the expansion module comprises: and a third hub electrically connected to the first USB switch, and a plurality of first USB interfaces electrically connected to the third hub.
4. The KVM switch with data cross-copy function as claimed in claim 3, wherein the expansion module further comprises a second USB switch electrically connected to the controller, the first hub, and the second hub, respectively, and the expansion module further comprises an audio chip electrically connected to the second USB switch and an audio interface electrically connected to the audio chip.
5. The KVM switch with data cross-copy function as recited in claim 4, wherein a video converter is connected between the first video interface and the video switch, and the first video interface is an HDMI interface.
6. The KVM switch with data cross-copy function as recited in claim 5, wherein the expansion module further comprises a DP interface electrically connected to the video converter.
7. The KVM switch with data cross copy function as claimed in claim 6, wherein when the first upstream port is used for connecting a notebook computer, a first signal switch is connected between the video switch and the first upstream port, the first signal switch is further electrically connected with a first hub, the first signal switch is used for dividing a signal output by the first upstream port into a USB3.0 signal and a video signal, the first signal switch is used for transmitting the USB3.0 signal to the first hub, the USB2.0 signal of the first upstream port is transmitted to the first hub, and the first signal switch is used for transmitting the video signal to the video switch.
8. The KVM switch with data cross copy function as claimed in claim 7, wherein when the second upstream port is used for connecting a notebook computer, a second signal switch is connected between the video switch and the second upstream port, the second signal switch is further electrically connected to a second hub, the second signal switch is used for dividing signals output by the second upstream port into USB3.0 signals and video signals, the second signal switch is used for transmitting USB3.0 signals to the second hub, USB2.0 signals of the second upstream port are transmitted to the second hub, and the second signal switch is used for transmitting video signals to the video switch.
9. The KVM switch with data cross-copy function as recited in claim 8, wherein the first USB switch comprises a first USB2.0 signal switch and a first USB3.0 signal switch, the first USB2.0 signal switch being electrically connected to the first hub, the second hub, and the third hub, respectively, and the first USB3.0 signal switch being electrically connected to the first hub, the second hub, and the third hub, respectively.
10. The KVM switch with data copying function according to claim 9, further comprising a power interface and a first power circuit electrically connected to the power interface, wherein the first power circuit is configured to rectify, filter and convert a first power input from the power interface, and then to electrically connect the first power to the controller, the first signal switch, the second signal switch, the video switch, the first USB2.0 signal switch, the second USB3.0 signal switch, the first hub, the second hub, the third hub, the first USB interface, the controller, the first video interface, the second video interface, the audio chip, and the copying chip, respectively.
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| CN115494972A (en) | 2022-12-20 |
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