CN105138300A - FPGA-based multi-channel KVM management board - Google Patents
FPGA-based multi-channel KVM management board Download PDFInfo
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- CN105138300A CN105138300A CN201510510423.2A CN201510510423A CN105138300A CN 105138300 A CN105138300 A CN 105138300A CN 201510510423 A CN201510510423 A CN 201510510423A CN 105138300 A CN105138300 A CN 105138300A
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Abstract
The invention discloses an FPGA-based multi-channel KVM management board which is characterized in that the management board comprises an FPGA, an MAX4312, an MAX4310, and an MAX4023; line and field signals and I2C signals of video in the KVM management board are controlled by the FPGA, and a video channel is selected by the FPGA; and the FPGA is externally connected with the MAX4312 for RGB gating, a gated signal is input to the MAX4310 for RGB cascading, a cascaded RGB signal is input to the MAX4023 for OSD video overlapping, and a superposed signal is output to a display for display. As chip use and cascade is reduced, the power consumption of the management board is greatly reduced, and the stability of the system is improved. The management board has the advantages of low power consumption, stable performance, convenient management, simple maintenance, and the like, and can be widely applied to KVM management systems of various servers.
Description
Technical field
The present invention relates to server and KVM technical field, be specifically related to a kind of multichannel KVM management board based on FPGA.
Background technology
KVM is the abbreviation of keyboard (Keyboard), display (Video), mouse (Mouse).The core concept of KVM technology is: by the configuration of suitable keyboard, mouse, display, realizes the centralized management of System and Network; The manageability of raising system, improves the work efficiency of system manager; Save the area of machine room, reduce the total cost of ownership of network engineering and server system; Avoid the radiation using multi-display to produce, the machine room of construction health environment-friendly.Utilize KVM many mian engine changeover system, system manager can carry out switching by a set of keyboard, mouse, display and implement management between the main frame or server of multiple different operating system.
FPGA(Field-ProgrammableGateArray), i.e. field programmable gate array, it is the product further developed on the basis of the programming devices such as PAL, GAL, CPLD.It occurs as a kind of semi-custom circuit in special IC (ASIC) field, has both solved the deficiency of custom circuit, overcomes again the shortcoming that original programming device gate circuit number is limited.
KVM(KeyboardVideoMouse) management system has a wide range of applications in the server, traditional KVM management board is primarily of compositions such as single-chip microcomputer, keyboard and mouse module, video modules, in order to realize KVM function, the number of chips that whole plate needs is more, cascade is complicated, and power consumption is higher, postpone greatly because cascade complexity causes, the shortcomings such as system stability is poor.
Summary of the invention
The technical problem to be solved in the present invention is: the present invention is directed to the problems such as existing KVM management board number of chips is many, power consumption is high, less stable, a kind of multichannel KVM management board based on FPGA is provided, have low in energy consumption, stable performance, convenient management and safeguard the advantage such as simple, can be widely used in the KVM management system of various server.
The technical solution adopted in the present invention is:
Based on a multichannel KVM management board of FPGA, described management board structure comprises FPGA, MAX4312, MAX4310, MAX4023, wherein:
In KVM management board, the row field signal of video and I2C signal are all controlled by FPGA, select video channel by FPGA, maximumly can support that eight tunnels are selected;
Because VGA signal is simulating signal, and FPGA can only processing digital signal, so the external MAX4312 of FPGA is used for RGB gating, maximumly eight tunnels can be supported to select;
The signal of gating is input to MAX4310 and carries out RGB cascade;
Rgb signal after cascade is input to MAX4023 and carries out OSD video superimpose;
Signal after superposition outputs to display and shows.
The selector switch function of the inner integration realization PS2 keyboard of described FPGA and mouse, parsing and encapsulation function, and external MAX4999 is used for USB keyboard and mouse signal is selected, maximumly can support that eight tunnels are selected.
The USBMAC function of the inner integration USB part of described FPGA, and circumscribed USB 1T11A realizes in FPGA inside as USBPHY, USBMAC function.
Beneficial effect of the present invention is:
The present invention is directed to existing KVM management board number of chips many, power consumption is high, the problems such as less stable propose a kind of multichannel KVM management board based on FPGA, in this KVM management board, the row field signal of video and I2C signal are all controlled by FPGA, select MAX4312, MAX4310, MAX4023 is respectively used to RGB gating, cascade and superposition, maximum can support eight tunnels select, keyboard and mouse can support USB and PS2 two kinds of modes, owing to decreasing use and the cascade of chip, so considerably reduce management board power consumption, improve system stability, this management board has low in energy consumption, stable performance, convenient management and safeguard the advantage such as simple, the KVM management system of various server can be widely used in.
Accompanying drawing explanation
Fig. 1 is KVM management board system diagram of the present invention.
Embodiment
Below by Figure of description, in conjunction with embodiment, the present invention is further described:
Embodiment 1:
As shown in Figure 1, a kind of multichannel KVM management board based on FPGA, described management board structure comprises FPGA, MAX4312, MAX4310, MAX4023, wherein:
In KVM management board, the row field signal of video and I2C signal are all controlled by FPGA, select video channel by FPGA, maximumly can support that eight tunnels are selected,
Because VGA signal is simulating signal, and FPGA can only processing digital signal, so the external MAX4312 of FPGA is used for RGB gating, maximumly eight tunnels can be supported to select;
The signal of gating is input to MAX4310 and carries out RGB cascade;
Rgb signal after cascade is input to MAX4023 and carries out OSD video superimpose;
Signal after superposition outputs to display and shows.
Wherein: row field signal is: HsyncXn_in and VsyncXn_in;
I2C signal is: SCLXn_in and SDAXn_in, I2C bus forms universal serial bus by data line SDA and clock cable SCL.
Embodiment 2:
On the basis of embodiment 1, the selector switch function of the inner integration realization PS2 keyboard of FPGA described in the present embodiment and mouse, parsing and encapsulation function, and external MAX4999 is used for USB keyboard and mouse signal is selected, maximumly can support that eight tunnels are selected.
Embodiment 3:
On the basis of embodiment 2, the USBMAC function of the inner integration USB part of FPGA described in the present embodiment, and circumscribed USB 1T11A realizes in FPGA inside as USBPHY, USBMAC function.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (3)
1. based on a multichannel KVM management board of FPGA, it is characterized in that: described management board structure comprises FPGA, MAX4312, MAX4310, MAX4023, wherein:
In KVM management board, the row field signal of video and I2C signal are all controlled by FPGA, select video channel by FPGA;
The external MAX4312 of FPGA is used for RGB gating, and the signal of gating is input to MAX4310 and carries out RGB cascade, and the rgb signal after cascade is input to MAX4023 and carries out OSD video superimpose, and the signal after superposition outputs to display and shows.
2. a kind of multichannel KVM management board based on FPGA according to claim 1, it is characterized in that: the selector switch function of the inner integration realization PS2 keyboard of described FPGA and mouse, parsing and encapsulation function, and external MAX4999 is used for USB keyboard and mouse signal is selected.
3. a kind of multichannel KVM management board based on FPGA according to claim 1 and 2, is characterized in that: the USBMAC function of the inner integration USB part of described FPGA, and circumscribed USB 1T11A realizes in FPGA inside as USBPHY, USBMAC function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510510423.2A CN105138300A (en) | 2015-08-19 | 2015-08-19 | FPGA-based multi-channel KVM management board |
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| CN201510510423.2A CN105138300A (en) | 2015-08-19 | 2015-08-19 | FPGA-based multi-channel KVM management board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607548A (en) * | 2016-03-21 | 2016-05-25 | 浪潮集团有限公司 | Management board based on FPGA |
| CN105700843A (en) * | 2016-01-19 | 2016-06-22 | 浪潮集团有限公司 | KVM system realization method based on OSD |
| CN105824773A (en) * | 2016-03-21 | 2016-08-03 | 浪潮集团有限公司 | Method for realizing multilevel cascade of multi-cell servers by means of calling OSD (On Screen Display) on basis of FPGA (Field Programmable Gate Array) |
| CN105892975A (en) * | 2016-04-21 | 2016-08-24 | 浪潮集团有限公司 | Management board of KVM (Keyboard Video Mouse) |
| CN107666595A (en) * | 2017-09-28 | 2018-02-06 | 漳州市利利普电子科技有限公司 | A kind of monitor cluster control system and its control method |
| 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 |
| CN107959806A (en) * | 2017-11-23 | 2018-04-24 | 郑州云海信息技术有限公司 | A kind of binodal point server KVM switches circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700843A (en) * | 2016-01-19 | 2016-06-22 | 浪潮集团有限公司 | KVM system realization method based on OSD |
| CN105607548A (en) * | 2016-03-21 | 2016-05-25 | 浪潮集团有限公司 | Management board based on FPGA |
| CN105824773A (en) * | 2016-03-21 | 2016-08-03 | 浪潮集团有限公司 | Method for realizing multilevel cascade of multi-cell servers by means of calling OSD (On Screen Display) on basis of FPGA (Field Programmable Gate Array) |
| CN105892975A (en) * | 2016-04-21 | 2016-08-24 | 浪潮集团有限公司 | Management board of KVM (Keyboard Video Mouse) |
| CN105892975B (en) * | 2016-04-21 | 2018-10-19 | 浪潮集团有限公司 | A kind of management board of KVM |
| CN107666595A (en) * | 2017-09-28 | 2018-02-06 | 漳州市利利普电子科技有限公司 | A kind of monitor cluster control system and its control method |
| 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 |
| CN107959806A (en) * | 2017-11-23 | 2018-04-24 | 郑州云海信息技术有限公司 | A kind of binodal point server KVM switches circuit |
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