CN107678725A - A kind of method and device that matrix form KVM is realized based on FPGA - Google Patents
A kind of method and device that matrix form KVM is realized based on FPGA Download PDFInfo
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- CN107678725A CN107678725A CN201711032643.4A CN201711032643A CN107678725A CN 107678725 A CN107678725 A CN 107678725A CN 201711032643 A CN201711032643 A CN 201711032643A CN 107678725 A CN107678725 A CN 107678725A
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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
- G06F3/1423—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
- 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
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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- Human Computer Interaction (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of method and device that matrix form KVM is realized based on FPGA, including may be programmed in FPGA inner utilizations and reconfigurability build MCU module, USB Host modules, USB Device modules, HV handover modules, VGA channel selecting modules and OSD module；The path of VGA signals is realized using MAX4382 chips and MAX4312 chips outside FPGA.Compared to the prior art a kind of of the present invention realizes matrix form KVM method and device based on FPGA, there is provided the centralized management of system and network is realized in a kind of configuration by keyboard, mouse, display；The manageability of raising system, improve the operating efficiency of system manager.More main frames and multidisplay switching system using KVM, multiple keepers can be managed before multiple display terminals individually by keyboard to multi-host system, and each management is separate；The application scenarios for needing matrix form KVM to manage in computer realm, cloud terminal, internet-of-things terminal, multimedia terminal, automotive electronics terminal etc. can be applied.
Description
Technical field
It is specifically a kind of to realize matrix form KVM's based on FPGA the present invention relates to multi-unit server technical field
Method and device.
Background technology
In previous multi-unit server, the KVM functions of management board realize it is by the multiple of CPLD+ chip microcontrollers
One display device of main frame.KVM function is more come what is realized by CPLD and the additional CH375 chips of single-chip microcomputer and USB Hub
The KVM functions that main frame one is shown.Realize more display projects of main frame one previous, to realize KVM functions, it is necessary to chip-count
Amount is more, and the area taken in circuit layout is excessive；And if realizing the more display functions of more main frames, it is necessary to number of chips will
Can be bigger, it is contemplated that the requirement of placement-and-routing and saving area is, it is necessary to which a kind of suitable scheme is debugged and tieed up for subsequent conditioning circuit plate
Shield provides convenient.
The content of the invention
The technical assignment of the present invention is to provide a kind of method and device that matrix form KVM is realized based on FPGA.
The technical assignment of the present invention is realized in the following manner：
A kind of method that matrix form KVM is realized based on FPGA, including,
1）Matrix form KVM management board host interface port and three main frame connections, display end and display will be realized based on FPGA
Device and the connection of USB key mouse；
2）Matrix form KVM management board will be realized based on FPGA first after upper electricity, three main frames upper electricity successively；
3）Keyboard recalls OSD interfaces by click keyboard ESC before No. 1 display, selects No. 1 display to show the content of main frame 2；
Keyboard recalls OSD interfaces by click keyboard ESC before No. 2 displays, selects No. 2 displays to show the content of main frame 3；No. 3 aobvious
Keyboard recalls OSD interfaces by click keyboard ESC before showing device, selects No. 3 displays to show the content of main frame 1；
4）After having selected, corresponding No. 1 display shows the content of main frame 2, and keyboard and mouse can use；No. 2 displays
Device shows the content of main frame 3, and keyboard and mouse can use；No. 3 displays show the content of main frame 1, and keyboard and
Mouse can use.
The path of VGA signals is realized outside described FPGA
The path of VGA signals is realized outside described FPGA using MAX4382 chips and MAX4312 chips.
Described FPGA inner utilizations are programmable and reconfigurability builds MCU module, USB Host modules, USB
Device modules, HV handover modules, VGA channel selecting modules and OSD module.
Described MCU module is responsible for USB Host modules and the exploitation of USB Device module drives and keyboard data solution
Analysis.
Described MCU module is embedded mc8051 modules, described mc8051 modules, by USB Host modules
Keyboard data parses, and judges whether it is the control information needed, if controlling other modules to work after control information caching；Such as
Fruit is not to send real main frame to after the data of parsing are sent to USB Device modules by control information.
A kind of device that matrix form KVM is realized based on FPGA, including,
FPGA inner utilizations are programmable and reconfigurability build MCU module, USB Host modules, USB Device modules,
HV handover modules, VGA channel selecting modules and OSD module；
The path of VGA signals is realized using MAX4382 chips and MAX4312 chips outside FPGA.
Described MCU module is embedded mc8051 modules, described mc8051 modules, by USB Host modules
Keyboard data parses, and judges whether it is the control information needed, if controlling other modules to work after control information caching；Such as
Fruit is not to send real main frame to after the data of parsing are sent to USB Device modules by control information.
Described USB Host modules and USB Device modules is to meet usb protocol with what verilog language was write
Hardware path, a peripheral module as described mc8051 modules are embedded into inside FPGA.
Described HV handover modules are after the HV of control external host VGA signals is sent to FPGA, according to mc8051 module solutions
HV is sent on each display device in rear end by the control command of analysis；
Described VGA channel selecting modules are that control signal is sent to MAX4382 chips by the order parsed according to mc8051 modules
With the channel selecting end of MAX4312 chips；
Described OSD module is the channel selecting interface with meaning directly perceived built using verilog, passes through mc8051 modules
The command calls OSD of parsing, channel selecting and distribution are done on display interface.
Compared to the prior art a kind of of the present invention realizes matrix form KVM method and device based on FPGA, there is provided a kind of
The centralized management of system and network is realized by the configuration of keyboard, mouse, display；The manageability of raising system, improve system
The operating efficiency of system keeper.More main frames and multidisplay switching system using KVM, multiple keepers can be in multiple displays
Multi-host system is managed individually by keyboard before terminal, each management is separate；It can apply and be led in computer
Domain, cloud terminal, internet-of-things terminal, multimedia terminal, automotive electronics terminal etc. need the application scenarios that matrix form KVM is managed.
Brief description of the drawings
Accompanying drawing 1 is a kind of block architecture diagram for the method that matrix form KVM is realized based on FPGA.
Embodiment
Embodiment 1：
Configuration device：
A kind of device that matrix form KVM is realized based on FPGA, including,
FPGA inner utilizations are programmable and reconfigurability build MCU module, USB Host modules, USB Device modules,
HV handover modules, VGA channel selecting modules and OSD module；
The path of VGA signals is realized using MAX4382 chips and MAX4312 chips outside FPGA.
Described MCU module is embedded mc8051 modules, described mc8051 modules, by USB Host modules
Keyboard data parses, and judges whether it is the control information needed, if controlling other modules to work after control information caching；Such as
Fruit is not to send real main frame to after the data of parsing are sent to USB Device modules by control information.
Described USB Host modules and USB Device modules is to meet usb protocol with what verilog language was write
Hardware path, a peripheral module as described mc8051 modules are embedded into inside FPGA.
Described HV handover modules are after the HV of control external host VGA signals is sent to FPGA, according to mc8051 module solutions
HV is sent on each display device in rear end by the control command of analysis；
Described VGA channel selecting modules are that control signal is sent to MAX4382 chips by the order parsed according to mc8051 modules
With the channel selecting end of MAX4312 chips；
Described OSD module is the channel selecting interface with meaning directly perceived built using verilog, passes through mc8051 modules
The command calls OSD of parsing, channel selecting and distribution are done on display interface.
Operating method：
1）Matrix form KVM management board host interface port and three main frame connections, display end and display will be realized based on FPGA
Device and the connection of USB key mouse；
2）Matrix form KVM management board will be realized based on FPGA first after upper electricity, three main frames upper electricity successively；
3）Keyboard recalls OSD interfaces by click keyboard ESC before No. 1 display, selects No. 1 display to show the content of main frame 2；
Keyboard recalls OSD interfaces by click keyboard ESC before No. 2 displays, selects No. 2 displays to show the content of main frame 3；No. 3 aobvious
Keyboard recalls OSD interfaces by click keyboard ESC before showing device, selects No. 3 displays to show the content of main frame 1；
4）After having selected, corresponding No. 1 display shows the content of main frame 2, and keyboard and mouse can use；No. 2 displays
Device shows the content of main frame 3, and keyboard and mouse can use；No. 3 displays show the content of main frame 1, and keyboard and
Mouse can use.
By embodiment above, the those skilled in the art can readily realize the present invention.But should
Work as understanding, the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, the technology
The technical staff in field can be combined different technical characteristics, so as to realize different technical schemes.
Claims (9)
- A kind of 1. method that matrix form KVM is realized based on FPGA, it is characterised in that including,1）Matrix form KVM management board host interface port and three main frame connections, display end and display will be realized based on FPGA Device and the connection of USB key mouse；2）Matrix form KVM management board will be realized based on FPGA first after upper electricity, three main frames upper electricity successively；3）Keyboard recalls OSD interfaces by click keyboard ESC before No. 1 display, selects No. 1 display to show the content of main frame 2； Keyboard recalls OSD interfaces by click keyboard ESC before No. 2 displays, selects No. 2 displays to show the content of main frame 3；No. 3 aobvious Keyboard recalls OSD interfaces by click keyboard ESC before showing device, selects No. 3 displays to show the content of main frame 1；4）After having selected, corresponding No. 1 display shows the content of main frame 2, and keyboard and mouse can use；No. 2 displays Device shows the content of main frame 3, and keyboard and mouse can use；No. 3 displays show the content of main frame 1, and keyboard and Mouse can use.
- 2. according to the method for claim 1, it is characterised in that the path of VGA signals is realized outside described FPGAAccording to the method for claim 2, it is characterised in that utilize MAX4382 chips and MAX4312 outside described FPGA Chip realizes the path of VGA signals.
- 3. according to the method for claim 1, it is characterised in that described FPGA inner utilizations are programmable and reconfigurability is taken Build MCU module, USB Host modules, USB Device modules, HV handover modules, VGA channel selecting modules and OSD module.
- 4. according to the method for claim 4, it is characterised in that described MCU module is responsible for USB Host modules and USB Device module drives are developed and keyboard data parsing.
- 5. according to the method for claim 5, it is characterised in that described MCU module is embedded mc8051 modules, described Mc8051 modules, by being parsed to the keyboard datas of USB Host modules, judge whether it is the control information needed, if Other modules are controlled to work after control information caching；The data of parsing are sent to USB Device modules if not control information After send real main frame to.
- A kind of 6. device that matrix form KVM is realized based on FPGA, it is characterised in that including,FPGA inner utilizations are programmable and reconfigurability build MCU module, USB Host modules, USB Device modules, HV handover modules, VGA channel selecting modules and OSD module；The path of VGA signals is realized using MAX4382 chips and MAX4312 chips outside FPGA.
- 7. device according to claim 7, it is characterised in that described MCU module is embedded mc8051 modules, described Mc8051 modules, by being parsed to the keyboard datas of USB Host modules, judge whether it is the control information needed, if Other modules are controlled to work after control information caching；The data of parsing are sent to USB Device modules if not control information After send real main frame to.
- 8. device according to claim 7, it is characterised in that described USB Host modules and USB Device modules be The hardware path for meeting usb protocol write with verilog language, a peripheral module as described mc8051 modules are embedding Enter to inside FPGA.
- 9. device according to claim 7, it is characterised in that described HV handover modules are control external host VGA letters Number HV be sent to FPGA after, according to mc8051 modules parse control command HV is sent on each display device in rear end；Described VGA channel selecting modules are that control signal is sent to MAX4382 chips by the order parsed according to mc8051 modules With the channel selecting end of MAX4312 chips；Described OSD module is the channel selecting interface with meaning directly perceived built using verilog, passes through mc8051 modules The command calls OSD of parsing, channel selecting and distribution are done on display interface.
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Cited By (3)
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|---|---|---|---|---|
| CN108874166A (en) * | 2018-06-15 | 2018-11-23 | 西安微电子技术研究所 | A kind of KVM controller based on FPGA and PS2 agreement |
| CN109521895A (en) * | 2018-11-27 | 2019-03-26 | 山东超越数控电子股份有限公司 | A kind of control method and device of the peripheral hardware signal switching based on FPGA |
| CN112367375A (en) * | 2020-10-27 | 2021-02-12 | 国核自仪系统工程有限公司 | Multi-terminal safety display system based on FPGA |
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| CN112367375A (en) * | 2020-10-27 | 2021-02-12 | 国核自仪系统工程有限公司 | Multi-terminal safety display system based on FPGA |
| CN112367375B (en) * | 2020-10-27 | 2023-06-30 | 国核自仪系统工程有限公司 | Multi-terminal safety display system based on FPGA |
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