CN206650761U - One kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor - Google Patents
One kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor Download PDFInfo
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- CN206650761U CN206650761U CN201720318379.XU CN201720318379U CN206650761U CN 206650761 U CN206650761 U CN 206650761U CN 201720318379 U CN201720318379 U CN 201720318379U CN 206650761 U CN206650761 U CN 206650761U
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Abstract
Surpass 5 class netting twines the utility model discloses a kind of use and realize remote VGA signals and multiplexing and distributor, its composition includes：Input and output end, input includes VGA input circuits, described VGA input circuits output end is electrically connected with VGA signal amplification circuits and one group of differential conversion circuit input respectively, the output end of VGA signal amplification circuits and one group of differential conversion circuit is electrically connected with one group of high frequency drive circuit input, receiving terminal includes Differential input circuit, Differential input circuit output end is electrically connected with differential-to-single-ended circuit/row field split circuit input, and differential-to-single-ended circuit/row field split circuit output end is electrically connected with VGA output ends.The device uses the distribution of high-frequency signal impedance match technique practice VGA signals, using the differential transformation of single-ended transfer difference circuit realiration VGA signals, and row field signal is implied wherein, high quality is finally realized using twisted-pair feeder differential transfer technology, at a distance, inexpensive VGA signal multichannel allocative decisions.
Description
Technical field
It the utility model is related to and surpass 5 class netting twines and realize remote VGA signals and multiplexing and distributor technical field,
Specially one kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor.
Background technology
5 class netting twines realize the long-distance transmissions of VGA signals to the present invention and multiplex broadcasting distributes using surpassing, can will all the way
VGA signal source is broadcast to multipath reception end, and transmission range can reach 50 meters（1080P）Or 100 meters（XVGA）.
Because VGA signals belong to high frequency analog signals, effective spectrum scope（DC-200MHz）, using generic coaxial cable
Mode is transmitted, and has that signal attenuation is big, and transmission range is near, and because signal public domain interference problem, picture quality are poor.Using difference
It is a kind of relatively good settling mode that point mode, which is transmitted, and there are similar products or scheme in domestic and international producer, but is typically all end pair
End transmission, to realize that multiple signals distribute, it is also necessary to solve signal impedance matching, amplify, signal differential conversion and multichannel distribution
The problems such as.
The present invention is on general differential signal circuit basis, preferably solves above mentioned problem, realizes VGA signals
Long-distance transmissions and multiplex broadcasting distribution, and reached satisfied image effect.
Utility model content
The purpose of this utility model be to provide one kind surpass 5 class netting twines realize remote VGA signals and multiplexing and point
With device, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides following technical scheme：One kind surpasses 5 class netting twines and realizes remote VGA
Signal and multiplexing and distributor, its composition include：Input and output end, described input include VGA input electricity
Road, described VGA input circuits output end electrically connect with VGA signal amplification circuits and one group of differential conversion circuit input respectively
Connect, the output end of described VGA signal amplification circuits and one group of differential conversion circuit and one group of high frequency drive circuit input electricity
Property connection, receiving terminal includes Differential input circuit, and described Differential input circuit output end is divided with differential-to-single-ended circuit/row field
It is electrically connected with from circuit input end, described differential-to-single-ended circuit/row field split circuit output end electrically connects with VGA output ends
Connect.
Compared with prior art, the beneficial effects of the utility model are：This surpass 5 class netting twines realize remote VGA signals and
Multiplexing and distributor use the distribution of high-frequency signal impedance match technique practice VGA signals, using single-ended transfer difference electricity
The differential transformation of VGA signals is realized on road, and implies row field signal wherein, designs Multi-channel high-frequency drive circuit, realizes that multichannel is believed
Number distribution transmission, design high frequency compensation in high frequency drive circuit, lift high-frequency signal, receiving terminal carried using high frequency compensation technology
Received signal quality is risen, high quality is finally realized using twisted-pair feeder differential transfer technology, at a distance, inexpensive VGA signals are more
Road allocative decision.
Brief description of the drawings
Fig. 1 is the utility model principle block diagram.
Fig. 2 is the utility model output end theory diagram.
Fig. 3 is the utility model VGA input circuit figures.
Fig. 4 is the utility model VGA signal amplification circuit figures.
Fig. 5 is the utility model differential conversion circuit figure.
Fig. 6 is the utility model high frequency drive circuit figure
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：One kind surpass 5 class netting twines realize remote VGA signals and
Multiplexing and distributor, its composition include：Input and output end, described input includes VGA input circuits, described
VGA input circuits output end be electrically connected with respectively with VGA signal amplification circuits and one group of differential conversion circuit input, it is described
VGA signal amplification circuits and the output end of one group of differential conversion circuit be electrically connected with one group of high frequency drive circuit input,
Described receiving terminal includes Differential input circuit, described Differential input circuit output end and differential-to-single-ended circuit/row field point
It is electrically connected with from circuit input end, described differential-to-single-ended circuit/row field split circuit output end electrically connects with VGA output ends
Connect.
Operation principle：The VGA signals of input input to amplifying circuit all the way after impedance matching, and signal is used as after output
Supervise or cascade signal source, in addition two tunnels be input to differential conversion circuit, differential conversion circuit not only changes into single-ended signal
Differential signal, while inputted using the common-mode signal transmission row field signal of differential signal, differential signal by impedance matching circuit
To the input of high frequency drive circuit, netting twine is transferred to by high frequency precompensation, receiving terminal compensates to high-frequency signal, poor
Sub-signal is converted into VGA signals, while isolates row field signal from the common-mode signal of differential signal.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (1)
1. one kind, which surpasses 5 class netting twines, realizes remote VGA signals and multiplexing and distributor, its composition includes：Input and
Output end, it is characterized in that：Described input includes VGA input circuits, described VGA input circuits output end respectively with VGA
Signal amplification circuit and one group of differential conversion circuit input are electrically connected with, described VGA signal amplification circuits and one group of difference
The output end of change-over circuit is electrically connected with one group of high frequency drive circuit input, and receiving terminal includes Differential input circuit, described
Differential input circuit output end and differential-to-single-ended circuit/row field split circuit input be electrically connected with, described difference turns
Single-end circuit/row field split circuit output end is electrically connected with VGA output ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318379.XU CN206650761U (en) | 2017-03-29 | 2017-03-29 | One kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318379.XU CN206650761U (en) | 2017-03-29 | 2017-03-29 | One kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650761U true CN206650761U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720318379.XU Active CN206650761U (en) | 2017-03-29 | 2017-03-29 | One kind surpasses 5 class netting twines and realizes remote VGA signals and multiplexing and distributor |
Country Status (1)
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| CN (1) | CN206650761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071304A (en) * | 2017-03-29 | 2017-08-18 | 北京正龙科技有限公司 | One kind use surpasses 5 class netting twines and realizes VGA signals and multiplexing and distributor and method |
-
2017
- 2017-03-29 CN CN201720318379.XU patent/CN206650761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071304A (en) * | 2017-03-29 | 2017-08-18 | 北京正龙科技有限公司 | One kind use surpasses 5 class netting twines and realizes VGA signals and multiplexing and distributor and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201123 Address after: Room 501 / 507, building C, No.1, East District, shangxue science and Technology City, Xinxue community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Lianlong Education Technology Co., Ltd Address before: 100070 Beijing city Fengtai District Guogongzhuang Street No. 20, block B room 6082 Patentee before: BEIJING ZHENGLONG TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |