CN201886419U - KVM (K Virtual Machine) device based on OSD chip - Google Patents
KVM (K Virtual Machine) device based on OSD chip Download PDFInfo
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- CN201886419U CN201886419U CN2010206390713U CN201020639071U CN201886419U CN 201886419 U CN201886419 U CN 201886419U CN 2010206390713 U CN2010206390713 U CN 2010206390713U CN 201020639071 U CN201020639071 U CN 201020639071U CN 201886419 U CN201886419 U CN 201886419U
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Abstract
The utility model discloses a KVM (K Virtual Machine) device based on an OSD (On Screen Display) chip, belonging to a KVM device. The KVM device based on the OSD chip structurally comprises a power supply module, an input module, a control circuit and an output module, wherein the input module consists of a VGA (Video Graphics Array) displayer input module, a PS2 keyboard input module, a PS2 mouse input module and a USB (Universal Serial Bus) input module, the control circuit consists of a controller including a single chip microcomputer and an OSD chip, and a double-CPLD chip, and the output module consists of a VGA displayer output interface, a PS2 keyboard output interface, a PS2 mouse output interface and a USB output interface; and the power supply module is connected with the control circuit and supplies power for the control circuit, and the input module is connected with the control circuit that is connected with the output module. The KVM device based on the OSD chip adopts the OSD chip and is controlled by the single chip microcomputer, thus realizing concentrated management of a displayer, a keyboard and a mouse, and improving the manageability of the system.
Description
Technical field
The utility model relates to a kind of KVM device, specifically a kind of KVM device based on the OSD chip.
Background technology
KVM, the i.e. abbreviation of keyboard (Keyboard), display (Video) and mouse (Mouse).The core concept of KVM technology is: by disposing suitable keyboard, mouse and display, centralized management KVM system.Traditional KVM supervisory system realizes by hardware circuit the switching between each main frame or the server, if the port number of control is more, then the hardware commutation circuit will increase, thereby makes hardware components increases that take up room, the increase production cost.
If can adopt software control to replace the complicated hardware circuit, not only can significantly reduce production cost, and make circuit miniaturization, reduce the number of keyboard, mouse, display, can improve space availability ratio thus.
The utility model content
Technical assignment of the present utility model is at above weak point, and a kind of employing OSD chip is provided, and by Single-chip Controlling, realizes the centralized management of display, keyboard, mouse, improves a kind of KVM device based on the OSD chip of the manageability of system.
The technical scheme that its technical matters that solves the utility model adopts is: comprise power module, load module, control circuit, output module, load module comprises VGA display load module, PS2 keyboard load module, PS2 mouse load module, USB load module, control circuit comprises controller and the two CPLD chip of being made up of single-chip microcomputer and OSD chip, and output module comprises VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface; Power module connects control circuit and to its power supply, VGA display load module, PS2 keyboard load module, PS2 mouse load module all are connected to the controller of being made up of single-chip microcomputer and OSD chip, the controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips, the USB load module connects two CPLD chips, and two CPLD chips connect VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface.
Described power module is the DC-DC power module, and input voltage is direct current 24V, 3 road output voltages are respectively+12V ,+5V ,+3.3V; Output voltage+12V is that intermediate voltage value is for being converted into output voltage+5V; Single-chip microcomputer and CPLD adopt the output voltage+3.3V power supply of power module; The OSD chip adopts the output voltage+5V power supply of power module.
Described employing iic bus is connected to VGA display load module, PS2 keyboard load module, PS2 mouse load module on the controller of being made up of single-chip microcomputer and OSD chip.
Described USB load module is a USB HUB controller, and USB HUB controller connects two CPLD chips.Usb signal is input to two CPLD chips by USB HUB controller, and the passage that two CPLD chip parts are only controlled USB switches.
The described controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips by the iic bus.
Explanation of nouns: OSD is the abbreviation of On Screen Display, is to be applied on the CRT/LCD display, produces some special font or figures in the screen of display, allows the user obtain some messages.
VGA (Video Graphics Array Video Graphics Array) is a kind of video transmission standard that IBM released with the PS/2 machine in 1987, have the resolution height, show advantages such as speed is fast, color is abundant, obtained using widely in the color monitor field.
CPLD (Complex Programmable Logic Device) CPLD is the device that develops out from PAL and GAL device, and scale is big comparatively speaking, and complex structure belongs to the large scale integrated circuit scope.It is a kind of user according to needs separately and the digital integrated circuit of constitutive logic function voluntarily.
USB HUB controller a kind ofly can expand to a USB interface a plurality of (being generally 4), and the device that these interfaces are used simultaneously.
The iic bus also claims I2C (Inter-Integrated Circuit) bus, is a kind of twin wire universal serial bus by the exploitation of PHILIPS company, is used to connect microcontroller and peripherals thereof.
The main effect of controller part that single-chip microcomputer and OSD chip are formed has: the one, receive the various control commands that keyboard is uploaded; The 2nd, the driving and the Presentation Function of control OSD chip; The 3rd, according to the order control various logic chip that receives, finish the selection and the switch operating of respective channel.The effect of CPLD: accept PS2 signal from the controller of single-chip microcomputer and OSD chip composition, as PS2-SCL, PS2-SDA, PS2-CLK, the output control signal, control address latchs chip, selects output 1 road PS2 keyboard and mouse signal; Output USBCLK signal is to USB HUB, and control USB HUB is sent to the channel selecting chip with data, after selecting at 8: 1, exports 1 road signal of USB then; In addition, CPLD intercepts and captures the various control commands of control end keyboard input and parse, and passes to single-chip microcomputer again, for its control OSD chip usefulness, is implemented in screen and shows control.
A kind of KVM device based on the OSD chip of the present utility model is compared with prior art, has the following advantages:
1, adopts the OSD chip,, realize the centralized management of display, keyboard, mouse, realize the control of multichannel keyboard and mouse input single channel output by Single-chip Controlling;
2, increase the USB input, one is changeed two, realize the input and output of USB device flexibly; When the PS2 keyboard and mouse is ineffective, can be by the redundant output that realizes keyboard and mouse of USB;
3, can avoid the complicacy of hardware circuit, realize the KVM centralized management of system simultaneously, improve system manager's work efficiency;
4, reasonable in design, simple in structure, easy to use, thereby, have good value for applications.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing 1 is a kind of structured flowchart of the KVM device based on the OSD chip.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
A kind of KVM device of the present utility model based on the OSD chip, its structure comprises power module, load module, control circuit, output module, load module comprises VGA display load module, PS2 keyboard load module, PS2 mouse load module, USB load module, control circuit comprises controller and the two CPLD chip of being made up of single-chip microcomputer and OSD chip, and output module comprises VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface; Power module connects control circuit and to its power supply, VGA display load module, PS2 keyboard load module, PS2 mouse load module all are connected to the controller of being made up of single-chip microcomputer and OSD chip, the controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips, the USB load module connects two CPLD chips, and two CPLD chips connect VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface.
Power module is the DC-DC power module, and input voltage is direct current 24V, 3 road output voltages are respectively+12V ,+5V ,+3.3V; Output voltage+12V is that intermediate voltage value is for being converted into output voltage+5V; Single-chip microcomputer and CPLD adopt the output voltage+3.3V power supply of power module; The OSD chip adopts the output voltage+5V power supply of power module.
Adopt the iic bus that VGA display load module, PS2 keyboard load module, PS2 mouse load module are connected on the controller of being made up of single-chip microcomputer and OSD chip.
The USB load module is a USB HUB controller, and USB HUB controller connects two CPLD chips.Usb signal is input to two CPLD chips by USB HUB controller, and the passage that two CPLD chip parts are only controlled USB switches.
The controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips by the iic bus.
A kind of its processing and fabricating of KVM device based on the OSD chip of the present utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (5)
1. KVM device based on the OSD chip, it is characterized in that comprising power module, load module, control circuit, output module, load module comprises VGA display load module, PS2 keyboard load module, PS2 mouse load module, USB load module, control circuit comprises controller and the two CPLD chip of being made up of single-chip microcomputer and OSD chip, and output module comprises VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface; Power module connects control circuit and to its power supply, VGA display load module, PS2 keyboard load module, PS2 mouse load module all are connected to the controller of being made up of single-chip microcomputer and OSD chip, the controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips, the USB load module connects two CPLD chips, and two CPLD chips connect VGA display output interface, PS2 keyboard output interface, PS2 mouse output interface, USB output interface.
2. a kind of KVM device based on the OSD chip according to claim 1 is characterized in that power module is the DC-DC power module, and input voltage is direct current 24V, 3 road output voltages are respectively+12V ,+5V ,+3.3V; Output voltage+12V is that intermediate voltage value is for being converted into output voltage+5V; Single-chip microcomputer and CPLD adopt the output voltage+3.3V power supply of power module; The OSD chip adopts the output voltage+5V power supply of power module.
3. a kind of KVM device based on the OSD chip according to claim 1 is characterized in that adopting the iic bus that VGA display load module, PS2 keyboard load module, PS2 mouse load module are connected on the controller of being made up of single-chip microcomputer and OSD chip.
4. a kind of KVM device based on the OSD chip according to claim 1 is characterized in that the USB load module is a USB HUB controller, and USB HUB controller connects two CPLD chips.
5. a kind of KVM device based on the OSD chip according to claim 1 is characterized in that the controller of being made up of single-chip microcomputer and OSD chip is connected two CPLD chips by the iic bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206390713U CN201886419U (en) | 2010-12-02 | 2010-12-02 | KVM (K Virtual Machine) device based on OSD chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206390713U CN201886419U (en) | 2010-12-02 | 2010-12-02 | KVM (K Virtual Machine) device based on OSD chip |
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| CN201886419U true CN201886419U (en) | 2011-06-29 |
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| CN2010206390713U Expired - Fee Related CN201886419U (en) | 2010-12-02 | 2010-12-02 | KVM (K Virtual Machine) device based on OSD chip |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622084A (en) * | 2012-03-09 | 2012-08-01 | 浪潮电子信息产业股份有限公司 | Novel method for detecting keyboard, video and mouse (KVM) products |
| CN102929396A (en) * | 2012-10-31 | 2013-02-13 | 浪潮集团有限公司 | Method for implementing double PS2 (Play Station 2) keyboard and mouse equipment operation of computer mainframe |
| CN103995598A (en) * | 2014-02-26 | 2014-08-20 | 山东超越数控电子有限公司 | HPS-based OSD interface switching scheme of FPGA |
| CN104102355A (en) * | 2014-07-17 | 2014-10-15 | 山东超越数控电子有限公司 | Method for designing USB (universal serial bus) keyboard and mouse combination equipment |
| CN104754257A (en) * | 2015-04-14 | 2015-07-01 | 吉林大学 | Character superimposition device and character superimposition method for video tracking |
| CN105045401A (en) * | 2015-07-01 | 2015-11-11 | 山东超越数控电子有限公司 | USB interface keyboard and mouse integrated system and design method therefor |
| CN105045418A (en) * | 2015-07-13 | 2015-11-11 | 浪潮集团有限公司 | SOC (System on Chip) based KVM (Keyboard Video Mouse) implementation system |
| CN105117031A (en) * | 2015-08-25 | 2015-12-02 | 天津市英贝特航天科技有限公司 | KVM device with integrated matrix keyboard |
| CN109521983A (en) * | 2019-01-17 | 2019-03-26 | 珠海恒宇新科技有限公司 | A kind of monitor keyboard system and display methods |
| CN110531881A (en) * | 2019-08-16 | 2019-12-03 | 北京小鸟科技股份有限公司 | The centralized kvm system of mouse calling OSD menu |
-
2010
- 2010-12-02 CN CN2010206390713U patent/CN201886419U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622084A (en) * | 2012-03-09 | 2012-08-01 | 浪潮电子信息产业股份有限公司 | Novel method for detecting keyboard, video and mouse (KVM) products |
| CN102929396A (en) * | 2012-10-31 | 2013-02-13 | 浪潮集团有限公司 | Method for implementing double PS2 (Play Station 2) keyboard and mouse equipment operation of computer mainframe |
| CN102929396B (en) * | 2012-10-31 | 2016-06-15 | 浪潮集团有限公司 | A kind of main frame that realizes can the method for double; two PS2 key Mus equipment operations |
| CN103995598A (en) * | 2014-02-26 | 2014-08-20 | 山东超越数控电子有限公司 | HPS-based OSD interface switching scheme of FPGA |
| CN104102355A (en) * | 2014-07-17 | 2014-10-15 | 山东超越数控电子有限公司 | Method for designing USB (universal serial bus) keyboard and mouse combination equipment |
| CN104754257A (en) * | 2015-04-14 | 2015-07-01 | 吉林大学 | Character superimposition device and character superimposition method for video tracking |
| CN104754257B (en) * | 2015-04-14 | 2017-08-25 | 吉林大学 | Character adder and stacking method for video tracking |
| CN105045401A (en) * | 2015-07-01 | 2015-11-11 | 山东超越数控电子有限公司 | USB interface keyboard and mouse integrated system and design method therefor |
| CN105045418A (en) * | 2015-07-13 | 2015-11-11 | 浪潮集团有限公司 | SOC (System on Chip) based KVM (Keyboard Video Mouse) implementation system |
| CN105117031A (en) * | 2015-08-25 | 2015-12-02 | 天津市英贝特航天科技有限公司 | KVM device with integrated matrix keyboard |
| CN109521983A (en) * | 2019-01-17 | 2019-03-26 | 珠海恒宇新科技有限公司 | A kind of monitor keyboard system and display methods |
| CN110531881A (en) * | 2019-08-16 | 2019-12-03 | 北京小鸟科技股份有限公司 | The centralized kvm system of mouse calling OSD menu |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131202 |