CN105630448A - KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) - Google Patents
KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) Download PDFInfo
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- CN105630448A CN105630448A CN201510983479.XA CN201510983479A CN105630448A CN 105630448 A CN105630448 A CN 105630448A CN 201510983479 A CN201510983479 A CN 201510983479A CN 105630448 A CN105630448 A CN 105630448A
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- 238000000034 method Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 3
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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
- G06F3/02—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
- G06F3/0383—Signal control means within the pointing device
-
- 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
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- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a KVM (Keyboard Video Mouse) system based on an FPGA (Field Programmable Gate Array), and belongs to the technical field of computers. The KVM system provides convenient communication between one group of keyboard mouse and multiple hosts, can be applied to a machine room, uses one set of keyboard mouse display to operate multiple servers, is compatible with PS2 (Personal System)/USB (Universal Serial Bus) interfaces, can effectively utilize traditional PS2 hardware equipment, consumes few resources to support OSD (On Screen Display) menu display and the effective communication of a USB keyboard/PS2 keyboard, avoids equipment waste, and has the advantages of being high in compatibility, high in system integration degree, small in resource consumption and convenient in use.
Description
Technical field
A kind of kvm system based on FPGA of disclosure, belongs to field of computer technology.
Background technology
KVM is the english abbreviation of keyboard (Keyboard), video display units (Video), mouse (Mouse), namely switch between the multiple host of multiple different operating systems with a set of or number set keyboard, display and mouse, it is achieved the function that a user uses a set of keyboard, mouse, display to remove to access and operate more than one main frame. KVM technology from initial basic SOHO office type, develops into enterprise IT basis machine room facilities management system. The server and the equipment that are positioned at multiple remote location can be directly accessed easily from KVM client-side management software. KVMoverIP solution possesses perfect many site failures forwarding function, meets the direct interface of new server admin standard (IPMI), and locally stored media map to the function of remote location. But the kvm system quickly grown is because relating to switching between manipulation multiple host, it is necessary to consume suitable resource, and between multiple host while switching, it may appear that compatible bad situation. The present invention is directed to the general resource consumption of existing kvm system and compatibility issue, a kind of kvm system based on FPGA is provided, facility communication is provided between keyboard and mouse and multiple host for one group, can be applicable to machine room, with a set of keyboard and mouse display, multiple servers is operated, compatible PS2/USB interface, can effectively utilize existing PS2 hardware device, consume less resource to support that OSD menu shows the efficient communication with USB keyboard/PS2 keyboard, avoiding causing equipment to waste, compatibility is strong, level of integrated system is high, it is few, easy to use to consume resource.
Summary of the invention
The present invention is directed to the general resource consumption of existing kvm system and compatible problem, it is provided that a kind of kvm system based on FPGA, this design has compatible strong, level of integrated system height, the consumption features such as resource is few, be easy to implement, and has broad application prospects.
The concrete scheme that the present invention proposes is:
A kind of kvm system based on FPGA, including FPGA module, video superimpose module, USB multi-path choice module, two-way multi-path choice module, USBKBHostPHY, USBKBSlavePHY;
Wherein FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display.
Described FPGA module includes 8051 control modules and controls register module,
USB keyboard signal enters FPGA module by USBKBHostPHY, controls module 8051 and obtains key assignments, makes key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication,
Made USB mouse signal directly and main-machine communication by controlling register module control USB multi-path choice module;
PS2 keyboard signal equally 8051 control modules obtain key assignments again with main-machine communication,
And made PS2 mouse signal directly and main-machine communication by controlling the two-way multi-path choice module of register module control.
FPGA module also sets up USBKBHostMAC module, USBKBSlaveMAC module,
Wherein USB keyboard signal enters the USBKBHostMAC module of FPGA module, control module 8051 and obtain key assignments, key assignments is controlled module by 8051 again and is dealt into USBKBSlaveMAC module, through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication.
Described FPGA module also sets up PS2KBHost module, PS2KBSlave module,
Wherein PS2 keyboard signal enters the PS2KBHost module of FPGA module, controls module 8051 and obtains key assignments, and key assignments is dealt into PS2KBSlave module by 8051 control modules again and completes and main-machine communication.
Described FPGA module also sets up OSD display module, and 8051 control module is deposited key assignments write control register module by bus, and content is passed through video superimpose module output display by the selection operation controlling OSD display module.
A kind of application process of the kvm system based on FPGA, utilize described system, FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display.
Usefulness of the present invention is:
Present system FPGA module, video superimpose module, USB multi-path choice module, two-way multi-path choice module, USBKBHostPHY, USBKBSlavePHY;
Wherein FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display;
Facility communication is provided between keyboard and mouse and multiple host for one group by present system, can be applicable to machine room, with a set of keyboard and mouse display, multiple servers is operated, compatible PS2/USB interface, can effectively utilize existing PS2 hardware device, consuming less resource to support the efficient communication of USB keyboard/PS2 keyboard, it is to avoid cause equipment to waste, compatibility is strong, level of integrated system is high, it is few, easy to use to consume resource.
Accompanying drawing explanation
The configuration diagram of Fig. 1 present system.
Detailed description of the invention
In conjunction with accompanying drawing, the present invention will be further described.
A kind of kvm system based on FPGA, including FPGA module, video superimpose module, USB multi-path choice module, two-way multi-path choice module, USBKBHostPHY, USBKBSlavePHY;
Wherein FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display.
Wherein FPGA module includes 8051 control modules and controls register module,
USB keyboard signal enters FPGA module by USBKBHostPHY, controls module 8051 and obtains key assignments, makes key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication,
Made USB mouse signal directly and main-machine communication by controlling register module control USB multi-path choice module;
In FPGA module, and for example also set up USBKBHostMAC module, USBKBSlaveMAC module,
Then wherein USB keyboard signal enters the USBKBHostMAC module of FPGA module, control module 8051 and obtain key assignments, key assignments is controlled module by 8051 again and is dealt into USBKBSlaveMAC module, through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication.
PS2 keyboard signal equally 8051 control modules obtain key assignments again with main-machine communication,
And made PS2 mouse signal directly and main-machine communication by controlling the two-way multi-path choice module of register module control;
And for example also set up PS2KBHost module, PS2KBSlave module in FPGA module,
Then PS2 keyboard signal enters the PS2KBHost module of FPGA module, controls module 8051 and obtains key assignments, and key assignments is dealt into PS2KBSlave module by 8051 control modules again and completes and main-machine communication.
In addition, FPGA module also can arrange OSD display module, and 8051 control module is deposited key assignments write control register module by bus, and content is passed through video superimpose module output display by the selection operation controlling OSD display module.
Said system is in further implementation process, and kvm system can pass through respective port and N platform main-machine communication. The wherein huge number of USB mouse, it is likely to there are three keys, also there are four keys, and different USB mouse is also different to the degree of accuracy of coordinate, some carry out denotation coordination with 8 bits, what have is then with 12 bit denotation coordinations, when these different types of USB mouse send signal, the passage controlling register module chooses signal control USB MUX and is connected with mouse signal by the USB passage of respective hosts. Avoiding the KVM design detection to all kinds of mouses, it is not necessary to the driving design of exploitation USB mouse, save FPGA and 8051 and control the resource of module, and compatibility can reach to maximize, main frame is compatible to mouse, is also compatible with by this kvm system.
Claims (7)
1., based on a kvm system of FPGA, it is characterized in that including FPGA module, video superimpose module, USB multi-path choice module, two-way multi-path choice module, USBKBHostPHY, USBKBSlavePHY;
Wherein FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display.
2. system according to claim 1, is characterized in that described FPGA module includes 8051 control modules and controls register module,
USB keyboard signal enters FPGA module by USBKBHostPHY, controls module 8051 and obtains key assignments, makes key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication,
Made USB mouse signal directly and main-machine communication by controlling register module control USB multi-path choice module;
PS2 keyboard signal equally 8051 control modules obtain key assignments again with main-machine communication,
And made PS2 mouse signal directly and main-machine communication by controlling the two-way multi-path choice module of register module control.
3. system according to claim 2, is characterized in that FPGA module also sets up USBKBHostMAC module, USBKBSlaveMAC module,
Wherein USB keyboard signal enters the USBKBHostMAC module of FPGA module, control module 8051 and obtain key assignments, key assignments is controlled module by 8051 again and is dealt into USBKBSlaveMAC module, through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication.
4. the system according to Claims 2 or 3, is characterized in that described FPGA module also sets up PS2KBHost module, PS2KBSlave module,
Wherein PS2 keyboard signal enters the PS2KBHost module of FPGA module, controls module 8051 and obtains key assignments, and key assignments is dealt into PS2KBSlave module by 8051 control modules again and completes and main-machine communication.
5. system according to claim 4, it is characterized in that described FPGA module also sets up OSD display module, 8051 control module is deposited key assignments write control register module by bus, and content is passed through video superimpose module output display by the selection operation controlling OSD display module.
6., based on a kvm system of FPGA, it is characterized in that including FPGA, video superimpose device, USB MUX, two-way MUX, USBKBHostPHY, USBKBSlavePHY;
Wherein FPGA utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, and makes key assignments through USBKBSlavePHY, again through USB MUX and main-machine communication, and controls USB MUX and makes USB mouse signal directly and main-machine communication;
FPGA be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way MUX and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA simultaneously, controls content by video superimpose device output display.
7. the application process based on the kvm system of FPGA, it is characterized in that utilizing the system described in any one of 1-5, FPGA module utilizes and obtains key assignments by the USBKBHostPHY USB keyboard signal entered, make key assignments through USBKBSlavePHY, again through USB multi-path choice module and main-machine communication, and control USB multi-path choice module and make USB mouse signal directly and main-machine communication;
FPGA module be also responsible for after PS2 keyboard signal enters obtaining key assignments again with main-machine communication, and control two-way multi-path choice module and make PS2 mouse signal directly and main-machine communication;
Key assignments is deposited by FPGA module simultaneously, controls content by video superimpose module output display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510983479.XA CN105630448A (en) | 2015-12-24 | 2015-12-24 | KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510983479.XA CN105630448A (en) | 2015-12-24 | 2015-12-24 | KVM (Keyboard Video Mouse) system based on FPGA (Field Programmable Gate Array) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678725A (en) * | 2017-10-30 | 2018-02-09 | 济南浪潮高新科技投资发展有限公司 | A kind of method and device that matrix form KVM is realized based on FPGA |
| 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 |
| CN115988246A (en) * | 2023-02-22 | 2023-04-18 | 北京小鸟科技股份有限公司 | Multi-mode USB2.0 seat remote transmission switching system |
-
2015
- 2015-12-24 CN CN201510983479.XA patent/CN105630448A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678725A (en) * | 2017-10-30 | 2018-02-09 | 济南浪潮高新科技投资发展有限公司 | A kind of method and device that matrix form KVM is realized based on FPGA |
| 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 |
| CN115988246A (en) * | 2023-02-22 | 2023-04-18 | 北京小鸟科技股份有限公司 | Multi-mode USB2.0 seat remote transmission switching system |
| CN115988246B (en) * | 2023-02-22 | 2023-05-16 | 北京小鸟科技股份有限公司 | Multimode USB2.0 seat remote transmission switching system |
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