CN102622084A - Novel method for detecting keyboard, video and mouse (KVM) products - Google Patents
Novel method for detecting keyboard, video and mouse (KVM) products Download PDFInfo
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- CN102622084A CN102622084A CN201210060798XA CN201210060798A CN102622084A CN 102622084 A CN102622084 A CN 102622084A CN 201210060798X A CN201210060798X A CN 201210060798XA CN 201210060798 A CN201210060798 A CN 201210060798A CN 102622084 A CN102622084 A CN 102622084A
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Abstract
The invention provides a novel method for detecting keyboard, video and mouse (KVM) products and belongs to the field of product detection methods. The method comprises the following steps of: isolating and distributing a path of video graphics array (VGA) signals through a processing circuit; superposing the VGA signals; and finally, extending the signals through a universal serial bus (USB). Compared with the prior art, the method has the advantages that a set of KVM product detection platform can be rapidly built, so that a testing environment is simplified, the occupied space is reduced, the cost is saved, and the detection efficiency can be improved.
Description
Technical field
The present invention relates to belong to the product detection range, a kind of specifically detection method of novel KVM product.
Background technology
KVM is the abbreviation of Keyboard, Video and Mouse, is also referred to as KVM switch, uses cover keyboard, mouse and a display, the equipment of many computing machines of control that is:.
Along with the continuous expansion of development in science and technology and client's application demand, the scale of calculating cluster is also increasing, and KVM equipment has become imperative equipment in the large-scale machine room deployment.
For guaranteeing product quality, before product export, all need carry out strict detection, wherein the functional test link that is absolutely necessary.For building one near the test platform of user rs environment; Improve to detect coverage rate, often need test, adopt this method of testing at the computer equipment that One's name is legion is prepared by factory; Though can guarantee that platform environment approaches user rs environment; But owing to need the computer equipment of One's name is legion, not only cause a large amount of wastes of resource, and dispose inconvenience.
Summary of the invention
The pick-up unit that the present invention designed can be avoided this problem fully, and its only needs a computer equipment just can go out user rs environment by real simulation, and simplified wiring greatly, practices thrift cost, lifting efficient.
Particular content of the present invention may further comprise the steps:
The distribution of step 1:VGA signal:, 1 road VGA is expanded to the output of 20 road VGA signals through VGA signal allocation treatment circuit;
The stack of step 2:VGA signal: through carrying out overlap-add procedure to VGA signal and OSD output signal, export, reach 1 tunnel input, the effects of 20 tunnel different outputs thereby can obtain different compound VGA videos;
Step 3:USB expansion:, realize 20 road USB output through USB HUB expansion.
The KVM system that this invention was suitable for must possess following characteristic:
(1) possesses the standard VGA input interface
(2) keyboard and mouse interface type are USB type (the PS2 interface type uses after can converting USB interface to through interconnecting device)
Because the VGA signal that the present invention exported has nothing in common with each other; When the video interference appears in different node/passages; Not only be easy to observe failure phenomenon, and, significantly promoted detection coverage rate and detection efficiency through disturbing the result can orient malfunctioning node/passage fast.
Description of drawings
Accompanying drawing 1 is a work structuring block diagram of the present invention.
Embodiment
Embodiment of the present invention are: the VGA signal of computing machine output is isolated through a cover treatment circuit and distributed; Obtain 20 tunnel same VGA signals; The OSD content of every then road VGA signal and developer's customization superposes; Thereby obtain 20 tunnel different VGA and export signal, so just can test out the video duty of each node/passage of KVM equipment easily.USB port with computing machine expands to 20 the tunnel simultaneously, is used for testing the keyboard and the mouse response condition of 20 node/passages.
As shown in the figure; Video Buffer is used for realizing isolation and the amplification to rgb signal; Utilize the high input impedance of Video Buffer can well realize the impedance matching of VGA signal, Video Buffer also provides the electric current amplification simultaneously, has promoted the driving force of rgb signal.OSD IC can export customized screen display under the control of MCU.RGB Multiplexers is a three-channel 2:1 RGB multiplexer, through the quick switching displayed of 2 road RGB input, has realized the effect of two-way rgb signal stack.Line Driver is the line drive of a homophase, is used for realizing distribution, buffering and the driving of row field sync signal in the VGA signal, thereby realizes the function more than a minute.USB HUB provides USB expanded function.IIC Switch is a kind of iic bus extended device, and it can expand to multichannel with 1 road iic bus, can avoid the address conflict problem of 20 OSD IC like this.
On the other hand; When the user only needs the video duty of tested K VM equipment, can not need computer equipment fully, only use this measurement jig to get final product; Pattern setting on only need changing on the measurement jig this moment, the specific capable field sync signal of PSOC output that lets the measurement jig plate carry.
The IC model that the present invention recommends to use is following:
Video Buffer:EL2480 or OPA3832
IIC Switch:PCA9546 or PCA9548
OSD IC:MTV018 or MTV048
RGB?Multiplexers：AD8183
Line?Driver：74HC244
USB HUB:FE2.1 or μ PD720113
Core technology of the present invention only need to be an input video source, just can export 20 tunnel different video signals.20 tunnel vision signals of output have identical refresh rate and resolution with input source; But display frame but has nothing in common with each other; The user can come to test out fast the state of each node/passage of KVM according to the display frame that customizes, and can orient malfunctioning node/passage fast.
The pick-up unit of the present invention's design is not only applicable to serial KVM product, is applicable to parallel KVM product yet.
Claims (1)
1. the detection method of a novel KVM product is characterized in that this method may further comprise the steps:
The distribution of step 1:VGA signal:, 1 road VGA is expanded to the output of 20 road VGA signals through VGA signal allocation treatment circuit;
The stack of step 2:VGA signal: through carrying out overlap-add procedure to VGA signal and OSD output signal, export, reach 1 tunnel input, the effects of 20 tunnel different outputs thereby can obtain different compound VGA videos;
Step 3:USB expansion:, realize 20 road USB output through USB HUB expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210060798XA CN102622084A (en) | 2012-03-09 | 2012-03-09 | Novel method for detecting keyboard, video and mouse (KVM) products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210060798XA CN102622084A (en) | 2012-03-09 | 2012-03-09 | Novel method for detecting keyboard, video and mouse (KVM) products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102622084A true CN102622084A (en) | 2012-08-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210060798XA Pending CN102622084A (en) | 2012-03-09 | 2012-03-09 | Novel method for detecting keyboard, video and mouse (KVM) products |
Country Status (1)
| Country | Link |
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| CN (1) | CN102622084A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611914U (en) * | 2010-01-06 | 2010-10-20 | 青岛海信电器股份有限公司 | VGA signal distributor circuit and television testing system |
| CN102096479A (en) * | 2011-02-28 | 2011-06-15 | 浪潮电子信息产业股份有限公司 | SMBUS-based KVM switch with local and remote functions |
| CN201886419U (en) * | 2010-12-02 | 2011-06-29 | 山东超越数控电子有限公司 | KVM (K Virtual Machine) device based on OSD chip |
| CN102169375A (en) * | 2011-05-17 | 2011-08-31 | 山东超越数控电子有限公司 | Method for switching control channel on KVM (K virtual machine) system |
-
2012
- 2012-03-09 CN CN201210060798XA patent/CN102622084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201611914U (en) * | 2010-01-06 | 2010-10-20 | 青岛海信电器股份有限公司 | VGA signal distributor circuit and television testing system |
| CN201886419U (en) * | 2010-12-02 | 2011-06-29 | 山东超越数控电子有限公司 | KVM (K Virtual Machine) device based on OSD chip |
| CN102096479A (en) * | 2011-02-28 | 2011-06-15 | 浪潮电子信息产业股份有限公司 | SMBUS-based KVM switch with local and remote functions |
| CN102169375A (en) * | 2011-05-17 | 2011-08-31 | 山东超越数控电子有限公司 | Method for switching control channel on KVM (K virtual machine) system |
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Application publication date: 20120801 |