CN204102118U - The expansion structure of VGA display interface Long line transmission - Google Patents
The expansion structure of VGA display interface Long line transmission Download PDFInfo
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- CN204102118U CN204102118U CN201420579916.2U CN201420579916U CN204102118U CN 204102118 U CN204102118 U CN 204102118U CN 201420579916 U CN201420579916 U CN 201420579916U CN 204102118 U CN204102118 U CN 204102118U
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Abstract
An expansion structure for VGA display interface Long line transmission, comprising: VGA input interface, VGA signal driving chip, VGA signal esd protection chip and VGA output interface; VGA input interface, VGA signal driving chip, VGA signal esd protection chip are connected by above-mentioned sequencing unidirectional electrical with VGA output interface.VGA display is inputted by VGA input interface, successively through VGA signal driving chip and VGA signal esd protection chip, is finally exported by VGA output interface.The expansion structure of VGA display interface Long line transmission of the present utility model can by the computing machine information of display frame simultaneously on three VGA displays only with a VGA display interface, and three display line lengths all reach 30 meters long, image quality is stablized clear, noiseless distortion.
Description
Technical field
The utility model relates to the technical field of video display, is the expansion structure that a kind of structure is simple, be convenient to the VGA display interface Long line transmission of practical application specifically.
Background technology
Along with the development of science and technology, modern people are by viewing graphoscope, and man-machine interaction ground mode processing transactions, finishes the work.The display interface of computer of current main flow has DVI, VGA and HDMI etc., but most computing machine only has a VGA display interface, drives distance substantially to only have 5 meters.Modern society is the society of resource sharing, is also the society shared out the work and help one another.Sharing out the work and help one another in process, the staff of different role often needs check same computer display information from different perspectives and finish the work.Therefore, be badly in need of a equipment and realize the expansion of VGA display interface at the hardware device such as computing machine only with single USB interface and drive extension function, the design of VGA display interface Long line transmission extender ground is very necessary.
VGA display interface Long line transmission the equipment of expansion is little on the market, the product of main flow is VGA display converter.This type of main flow VGA display converter principal feature be several roads VGA display interface by trigger keyboard or alternate manner switch control and gating wherein a road VGA export, this VGA display converter is mainly used in several computers share VGA display application by switching mode.Chinese patent " a kind of VGA changing method of blade server " (application number 2011103672933) discloses a kind of VGA changing method scheme of blade server.The program mainly teaches and to be suspended on backboard by the VGA signal of blades all on blade server in one group of bus and to output to VGA display interface through system management module gating, a trigger switch is added in each blade computers of blade server, this trigger switch control system administration module opens current blade display channel, closes other blade display channel.This design proposal thinking is novel, is applicable to same display and switches the different computer equipment of display, but be not suitable for the pattern of sharing out the work and help one another of a long distance of computing machine multi-angle.
Utility model content
The technical problems to be solved in the utility model is to provide the expansion structure that a kind of structure is simple, be convenient to the VGA display interface Long line transmission of practical application.
The technical scheme that the utility model is taked for the technical matters existed in solution known technology is:
The expansion structure of VGA display interface Long line transmission of the present utility model, comprising: VGA input interface, VGA signal driving chip, VGA signal esd protection chip and VGA output interface; VGA input interface, VGA signal driving chip, VGA signal esd protection chip are connected by above-mentioned sequencing unidirectional electrical with VGA output interface.
The utility model can also adopt following technical measures:
The expansion structure of described VGA display interface Long line transmission is three tunnels, VGA signal driving chip comprises again VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C, VGA signal esd protection chip comprises again VGA signal esd protection chip A, VGA signal esd protection B, VGA signal esd protection C, and VGA output interface comprises again VGA output interface A, VGA output interface B and VGA output interface C, described VGA input interface respectively with VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C unidirectional electrical connects, VGA signal driving chip A is connected with VGA signal esd protection chip A unidirectional electrical, VGA signal driving chip B is connected with VGA signal esd protection chip B unidirectional electrical, VGA signal driving chip C is connected with VGA signal esd protection chip C unidirectional electrical, VGA signal esd protection chip A is connected with VGA output interface A unidirectional electrical, VGA signal esd protection chip B is connected with VGA output interface B unidirectional electrical, VGA signal esd protection chip C is connected with VGA output interface C unidirectional electrical.
Described VGA input interface connects with computing machine VGA display interface; VGA input interface is the public mouth socket of DB15.
Described VGA signal driving chip A, VGA signal driving chip B and VGA signal driving chip C is LT6557IGN video drive chip.
Described VGA signal esd protection chip A, VGA signal esd protection chip B and VGA signal esd protection chip C is CM2009 chip.
Described VGA output interface A, VGA output interface B and VGA output interface C connects with the display interface of each VGA display; VGA output interface A, B, C are respectively the female mouth socket of DB15.
The advantage that the utility model has and good effect are:
In the expansion structure of VGA display interface Long line transmission of the present utility model, VGA display is inputted by VGA input interface, successively through VGA signal driving chip and VGA signal esd protection chip, is finally exported by VGA output interface.The expansion structure of VGA display interface Long line transmission of the present utility model can by the computing machine information of display frame simultaneously on three VGA displays only with a VGA display interface, and three display line lengths all reach 30 meters long, image quality is stablized clear, noiseless distortion.Thus it is narrow to solve computing machine single USB interface display view angle, drive the problem that display distance is short, in the utility model, all external input signals are by means of only computing machine VGA display translation interface, without the need to externally fed, have structure simple, are convenient to the advantages such as practical application.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the expansion structure of VGA display interface Long line transmission of the present utility model;
Fig. 2 is the circuit diagram of VGA signal driving chip in the expansion structure of VGA display interface Long line transmission of the present utility model;
Fig. 3 is the circuit diagram of VGA signal esd protection chip in the expansion structure of VGA display interface Long line transmission of the present utility model.
Embodiment
Referring to drawings and Examples, the utility model is described in detail.
Fig. 1 is the schematic diagram of the expansion structure of VGA display interface Long line transmission of the present utility model; Fig. 2 is the circuit diagram of VGA signal driving chip in the expansion structure of VGA display interface Long line transmission of the present utility model; Fig. 3 is the circuit diagram of VGA signal esd protection chip in the expansion structure of VGA display interface Long line transmission of the present utility model.
The expansion structure of VGA display interface Long line transmission of the present utility model, comprising: VGA input interface, VGA signal driving chip, VGA signal esd protection chip and VGA output interface; VGA input interface, VGA signal driving chip, VGA signal esd protection chip are connected by above-mentioned sequencing unidirectional electrical with VGA output interface.
As shown in Figure 1, the expansion structure of VGA display interface Long line transmission is three tunnels, VGA signal driving chip comprises again VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C, VGA signal esd protection chip comprises again VGA signal esd protection chip A, VGA signal esd protection B, VGA signal esd protection C, and VGA output interface comprises again VGA output interface A, VGA output interface B and VGA output interface C, described VGA input interface respectively with VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C unidirectional electrical connects, VGA signal driving chip A is connected with VGA signal esd protection chip A unidirectional electrical, VGA signal driving chip B is connected with VGA signal esd protection chip B unidirectional electrical, VGA signal driving chip C is connected with VGA signal esd protection chip C unidirectional electrical, VGA signal esd protection chip A is connected with VGA output interface A unidirectional electrical, VGA signal esd protection chip B is connected with VGA output interface B unidirectional electrical, VGA signal esd protection chip C is connected with VGA output interface C unidirectional electrical.
VGA input interface is used for connecting with computing machine VGA display interface, and VGA input interface adopts the public mouth socket of conventional DB15, and in the course of the work, VGA input interface is for connecting the female mouth socket of DB15 of the VGA display of the equipment such as computing machine.
VGA signal driving chip A is for strengthening the first via VGA signal R, G, B signal driving force and antijamming capability; the model of VGA signal driving chip A employing Linear Tech of the U.S. (Linear Technology Corporation) in embodiment is the video drive chip of LT6557IGN; in the course of the work; VGA signal driving chip A is responsible for R, G, B of strengthening first via VGA; HS, VS driving force also sends into corresponding first via VGA signal esd protection chip A.The circuit diagram of VGA signal driving chip as shown in Figure 2.
VGA signal driving chip B hardware composition and function identical with VGA signal driving chip A, for strengthening second road VGA signal R, G, B, HS, VS signal driving force and antijamming capability.In the course of the work, VGA signal driving chip B is responsible for R, G, B of enhancing second road VGA, and HS, VS driving force also sends into the second corresponding road VGA signal esd protection chip B.
VGA signal driving chip C hardware composition and function identical with VGA signal driving chip A, for strengthening the 3rd road VGA signal R, G, B, HS, VS signal driving force and antijamming capability.In the course of the work, VGA signal driving chip C is responsible for R, G, B of enhancing the 3rd road VGA, and HS, VS driving force also sends into the 3rd corresponding road VGA signal esd protection chip C.
VGA signal esd protection chip A is used for the first via VGA signal R, G, B, the ESD electrostatic protection of HS, VS and carry out HS, VS level conversion and strengthen HS, VS driving force.VGA signal esd protection chip A in embodiment adopts California micro equipment company (California Micro Device) model to be the chip of CM2009; in the course of the work; VGA signal esd protection chip A is responsible for R, G, B of protecting first via VGA; HS; VS signal, from ESD electrostatic damage, makes HS, and VS becomes Transistor-Transistor Logic level by digital CMOS level conversion; and strengthen driving force, finally send VGA output interface A to export and be connected to display.The circuit diagram of VGA signal esd protection chip as shown in Figure 3.
The hardware composition of VGA signal esd protection chip B and function identical with VGA signal esd protection chip A, for second road VGA signal R, G, B, the ESD electrostatic protection of HS, VS with carry out HS, VS level conversion and strengthen HS, VS driving force.In the course of the work, VGA signal esd protection chip B processing signals and send VGA output interface B export be connected to display.
The hardware composition of VGA signal esd protection chip C and function identical with VGA signal esd protection chip A, for the 3rd road VGA signal R, G, B, the ESD electrostatic protection of HS, VS with carry out HS, VS level conversion and strengthen HS, VS driving force.In the course of the work, VGA signal esd protection chip C processing signals and send VGA output interface C export be connected to display.
VGA output interface A is used for connecting with first via VGA display display interface.VGA output interface A in embodiment adopts the female mouth socket of conventional DB15, and in the course of the work, VGA output interface A, for the public mouth socket of DB15 connecting VGA display, realizes first via VGA and exports.
Identical with VGA output interface A on VGA output interface B hardware, VGA output interface B, for the public mouth socket of DB15 connecting the second road VGA display, realizes the second road VGA and exports.
Identical with VGA output interface A on VGA output interface C hardware, VGA output interface C, for the public mouth socket of DB15 connecting the 3rd road VGA display, realizes the 3rd road VGA and exports.
The VGA display of the equipment such as computing machine accesses the expansion structure of VGA display interface Long line transmission of the present utility model by VGA input interface, the signal of access successively strengthens through VGA signal driving chip A and VGA signal esd protection chip A one-way transmission, the VGA output display passage sending VGA output interface A to form the first via to strengthen; In like manner, the signal of access successively strengthens through VGA signal driving chip B and VGA signal esd protection chip B one-way transmission, the VGA output display passage sending VGA output interface B to form the second tunnel to strengthen; The signal of access successively strengthens through VGA signal driving chip C and VGA signal esd protection chip C one-way transmission; send VGA output interface C to form the VGA output display passage of the 3rd tunnel enhancing, finally achieve the VGA display channel that a road VGA expands three tunnels enhancings.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (6)
1. an expansion structure for VGA display interface Long line transmission, is characterized in that, comprising: VGA input interface, VGA signal driving chip, VGA signal esd protection chip and VGA output interface; VGA input interface, VGA signal driving chip, VGA signal esd protection chip are connected by above-mentioned sequencing unidirectional electrical with VGA output interface.
2. the expansion structure of VGA display interface Long line transmission according to claim 1, is characterized in that: the expansion structure of VGA display interface Long line transmission is three tunnels, VGA signal driving chip comprises again VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C, VGA signal esd protection chip comprises again VGA signal esd protection chip A, VGA signal esd protection B, VGA signal esd protection C, and VGA output interface comprises again VGA output interface A, VGA output interface B and VGA output interface C, described VGA input interface respectively with VGA signal driving chip A, VGA signal driving chip B, VGA signal driving chip C unidirectional electrical connects, VGA signal driving chip A is connected with VGA signal esd protection chip A unidirectional electrical, VGA signal driving chip B is connected with VGA signal esd protection chip B unidirectional electrical, VGA signal driving chip C is connected with VGA signal esd protection chip C unidirectional electrical, VGA signal esd protection chip A is connected with VGA output interface A unidirectional electrical, VGA signal esd protection chip B is connected with VGA output interface B unidirectional electrical, VGA signal esd protection chip C is connected with VGA output interface C unidirectional electrical.
3. the expansion structure of VGA display interface Long line transmission according to claim 2, is characterized in that: VGA input interface connects with computing machine VGA display interface; VGA input interface is the public mouth socket of DB15.
4. the expansion structure of the VGA display interface Long line transmission according to Claims 2 or 3, is characterized in that: VGA signal driving chip A, VGA signal driving chip B and VGA signal driving chip C is LT6557IGN video drive chip.
5. the expansion structure of VGA display interface Long line transmission according to claim 4, is characterized in that: VGA signal esd protection chip A, VGA signal esd protection chip B and VGA signal esd protection chip C is CM2009 chip.
6. the expansion structure of the VGA display interface Long line transmission according to claim 2 or 5, is characterized in that: VGA output interface A, VGA output interface B and VGA output interface C connects with the display interface of each VGA display; VGA output interface A, B, C are respectively the female mouth socket of DB15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420579916.2U CN204102118U (en) | 2014-10-09 | 2014-10-09 | The expansion structure of VGA display interface Long line transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420579916.2U CN204102118U (en) | 2014-10-09 | 2014-10-09 | The expansion structure of VGA display interface Long line transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113223441A (en) * | 2021-05-20 | 2021-08-06 | 青岛中科英泰商用系统股份有限公司 | Display expansion connection method and device |
-
2014
- 2014-10-09 CN CN201420579916.2U patent/CN204102118U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113223441A (en) * | 2021-05-20 | 2021-08-06 | 青岛中科英泰商用系统股份有限公司 | Display expansion connection method and device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20211009 |