CN201426151Y - Enhanced anti-interference circuit by utilizing twisted-air cable to convey VGA signal - Google Patents
Enhanced anti-interference circuit by utilizing twisted-air cable to convey VGA signal Download PDFInfo
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- CN201426151Y CN201426151Y CN2008202352753U CN200820235275U CN201426151Y CN 201426151 Y CN201426151 Y CN 201426151Y CN 2008202352753 U CN2008202352753 U CN 2008202352753U CN 200820235275 U CN200820235275 U CN 200820235275U CN 201426151 Y CN201426151 Y CN 201426151Y
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Abstract
The utility model relates to an enhanced anti-interference circuit by utilizing a twisted-pair cable to convey a VGA signal, and in particular to an anti-interference circuit by utilizing a twisted-pair cable to convey a computer VGA signal, which is characterized in that: firstly a video signal which is received by a differential video signal input interface circuit is conveyed to a differentialvideo signal impedance matching and signal separating network circuit, the differential video signal impedance matching and signal separating network circuit outputs a signal to an enhanced common-mode interference-prevention synchronic signal separating circuit to be processed and to be directly transmitted to a VGA signal output circuit; and another signal enters a high common-mode input differential signal processing circuit to be processed and to be transmitted to the VGA signal output circuit after being processed by a video signal capacitance separation and anti-interference circuit. Hand V synchronic signals are separated by a particular circuit, so the common-mode signal input range of the VGA signal and the anti-interference capacity of the video signal are greatly improved, andat the same time the video signal is not attenuated, thereby, the stability of the system is improved. The enhanced anti-interference circuit has simple structure, low cost and easy debugging and favors the mass production.
Description
Technical field:
The utility model relates to computer VGA signal circuit, especially the anti-jamming circuit that transmits on twisted-pair feeder of computer VGA signal.
Background technology:
The middle longer transmission of computer VGA signal adopts shielded multiconductor cable or network cable transmission usually at present.Transmission range is long, introduces easily and disturbs.The VGA signal is except red color R simultaneously, and green color G outside three kinds of signals of blue color B, also has other horizontal-drive signal H, two synchronizing signals of vertical synchronizing signal V.In the twisted-pair feeder transmission, the VGA vision signal adopts EL4543 usually, ISL59311, and AD8134, AD8147, integrated circuits such as AD8148 are with H, and V signal is coded in the R of VGA signal, and G is in the B signal.And like this signal transmission distance is long, disturbs when big, and the VGA vision signal after the transmission just is subjected to bigger interference.And be coded in R, and G, the H in the B signal, the V synchronizing signal is lost when receiving terminal is handled especially easily, makes whole signal interruption.
Because existing technology, the common-mode signal input range is too small, easily lossing signal.Stability in use is not high, can't large-area applications.
Summary of the invention:
The purpose of this utility model is to provide a kind of enhancement mode anti-jamming circuit that adopts twisted-pair feeder transmission VGA signal.
Summary of the invention
At first the vision signal that the difference video signal input interface circuit is received passes to difference video signal impedance matching, Signal Separation lattice network, and it is exported one the tunnel and directly send to the VGA signal output apparatus after strengthening anti-common mode disturbances type sync separator circuit processing; Another road enters high common mode input differential signal treatment circuit and is sent to the output of VGA signal output apparatus after treatment again after the isolation of vision signal electric capacity, anti-jamming circuit are handled.
High common mode input differential signal treatment circuit (05) adopts input range be ± AD8143, AD8129 integrated circuit that the high common mode of 10V is imported.
The utility model separates the HV synchronizing signal by special circuit, improves the common-mode signal input range of VGA signal and the antijamming capability of vision signal greatly, does not have the attenuation video signal simultaneously, thus improve the stability of system; Simultaneously simple in structure, cost is low, is easy to debugging, is beneficial to production in enormous quantities.
Description of drawings
Accompanying drawing 1 is a controlling party block diagram of the present utility model;
Embodiment:
Embodiment 1 (seeing accompanying drawing 2) adopts following electrically connecting:
8 pin of J101 connect an end of resistance R 125, an end of resistance R 104, an end of resistance R 110, an end of capacitor C 101; The 7th pin of J101 connects resistance R 126 1 ends, resistance R 105 1 ends, an end of resistance R 111, an end of capacitor C 102; The end of one end of the 6 pin connection resistance R 127 of J101, resistance R 106 1 ends, resistance R 112 1 ends, inductance C103; 3 pin of J101 connect an end, an end of resistance R 107, resistance R 113 1 ends, inductance C105 one end of resistance R 128; The J1012 pin connects resistance R 129 1 ends, an end of resistance R 108, an end of resistance R 114, the end of inductance C104; The J1011 pin connects the end of resistance R 130 1 ends, resistance R 109 1 ends, resistance R 115 1 ends, inductance C106.
1 pin of inductance T101 connects an end of resistance R 116, the other end of capacitor C 101; 2 pin of T101 connect 11 pin of integrated circuit U102; 3 pin of T101 connect 10 pin of integrated circuit U102; 4 pin of T101 connect an end of resistance R 117, the other end of capacitor C 102.
1 pin of inductance T102 connects an end of resistance R 118, the other end of capacitor C 103; 2 pin of T102 connect 5 pin of integrated chip U102; 3 pin of T102 connect 4 pin of integrated circuit U102; 4 pin of T102 connect an end of resistance R 120, the other end of capacitor C 105;
1 end of inductance T103 connects an end of resistance R 119, the other end of inductance C104; 2 ends of T103 connect 31 pin of integrated circuit; 3 pin of T103 connect 30 pin of integrated circuit; 4 pin of T103 connect an end of resistance R 121, the other end of capacitor C 106.
1 pin of integrated circuit U101 connects an end of resistance R 133; 2 pin of U101 connect an end of resistance R 132, an end of resistance R 135; 6 pin of U101 connect resistance R 134; 7 pin of U101 connect resistance R 131; 13 pin of U101 connect 14 pin of J102; 11 pin of U101 connect 14 pin of J102; 15 pin of U101 connect an end of resistance R 136,1 pin of triode D101,9 pin of U101.3 pin of U101 connect 14 pin of U1014; 10 pin of U101 connect 5 pin of U101.
The other end of resistance R 131 connects the other end of resistance R 104, the other end of resistance R 105; The other end of resistance R 133 connects the other end of resistance R 106, the other end of resistance R 107; The other end of resistance R 134 connects the other end of resistance R 108, the other end of resistance R 109; The other end of resistance R 132 connects the other end of resistance R 110, the other end of resistance R 111; The other end of resistance R 135 connects the other end of resistance R 114, the other end of resistance R 115.The other end of resistance R 112 connects the other end of resistance R 113.One end of resistance R 101 connects the other end of resistance R 125, the other end of resistance R 126, the other end of resistance R 122.One end of resistance R 102 connects the other end of resistance R 107, the other end of resistance R 128, the other end of resistance R 123; One end of resistance R 103 connects the other end of resistance R 129, the other end of resistance R 130, the other end of resistance R 124; The end of inductance C109 connects the other end of resistance R 122; The end of inductance C110 connects the other end of resistance R 123; The end of inductance C111 connects the other end of resistance R 124.
1 pin of VGA interface J102 connects 21 pin of integrated circuit U102; 2 pin of J102 connect 22 pin of U102; 3 pin of J102 connect 23 pin of U102.
The other end of resistance R 101, the other end of capacitor C 109, the other end of resistance R 102, the other end of capacitor C 110, the other end of resistance R 103, the other end of capacitor C 111, the other end of resistance R 116, the other end of resistance R 117, the other end of resistance R 118, the other end of resistance R 120, the other end of resistance R 119, the other end of resistance R 121,8 pin of integrated circuit U101,1 pin of integrated circuit U102,2 pin, 6 pin, 8 pin, 9 pin, 16 pin, 17 pin, 24 pin, 25 pin, 28 pin, 32 pin, 6 pin of VGA interface J102,7 pin, 8 pin, 10 pin, 5 pin, one end of capacitor C 108, an end of capacitor C 107, the 3 pin ground connection of triode D101.
16 pin of integrated circuit U101,4 pin, the other end of capacitor C 108, the other end of capacitor C 107, the other end connection+5V power supply of resistance R 136.
20 pin of integrated circuit U102 connect+12 power supplys, and 26 pin of U102 connect-the 12V power supply.
Embodiment 2 (seeing accompanying drawing 3) adopts following electrically connecting:
8 pin of J201 connect an end of resistance R 210, an end of capacitor C 201; 7 pin of J201 connect an end of resistance R 211, an end of capacitor C 203; 6 pin of J201 connect an end of resistance R 212, an end of capacitor C 202; 3 pin of J201 connect an end of resistance R 213, an end of capacitor C 204; 2 pin of J201 connect an end of resistance R 214, an end of capacitor C 205; 1 pin of J201 connects an end of resistance R 215, an end of capacitor C 206.
1 pin of inductance T201 connects the end of R201, the other end of capacitor C 201; 2 pin of inductance T201 connect 11 ends of integrated circuit U205; 3 pin of inductance T201 connect 10 pin of integrated circuit U205; 4 pin of inductance T201 connect an end of resistance R 202, the other end of capacitor C 203.
1 pin of inductance T202 connects an end of resistance R 203, the other end of inductance C202; 2 pin of inductance T202 connect 5 pin of integrated circuit U205; 3 pin of inductance T202 connect 4 pin of integrated circuit; 4 pin of inductance T202 connect an end of resistance R 205, the other end of capacitor C 204.
1 pin of inductance T203 connects an end of resistance R 204, the other end of capacitor C 205; 2 pin of inductance T203 connect 31 pin of integrated circuit U205,3 pin of inductance T203 connect an end of the 4 pin connection resistance R 206 of 30 pin of integrated circuit U205, inductance T203, the other end of capacitor C 206.
1 pin of integrated circuit U201 connects an end of resistance R 207, the other end of resistance R 214, the other end of resistance R 215; One end of the 2 pin understanding resistance R 208 of U201, the other end of resistance R 210, the other end of resistance R 211; The other end of the 6 pin connecting resistance R207 of U201, the other end of resistance R 208, an end of capacitor C 209; 7 pin of U201 connect an end of resistance R 209; 13 pin of U201 connect 14 pin of VGA interface J202; 11 pin of U201 connect 13 pin of J202; 15 pin of T201 connect an end of resistance R 216,1 pin of triode D201,9 pin of T201.
1 pin of J202 connects integrated circuit 21 pin; 2 pin of J202 connect 22 pin of integrated circuit U205; 3 pin of J202 connect 23 pin of integrated circuit U205.
The other end of the terminating resistor R209 of inductance C210.
The other end of resistance R 201, the other end of resistance R 202, the other end of resistance R 203, the other end of resistance R 204, the other end of resistance R 205, the other end of resistance R 206, the other end of capacitor C 209, the other end of capacitor C 210, an end of capacitor C 208, an end of capacitor C 209,2 pin of triode D201,8 pin of integrated circuit U201,1,2,6,8,9,16,17,24,25,28,32 pin of integrated circuit U205,6 pin of J202,7 pin, 8 pin, 10 pin, 5 pin ground connection.
16 pin of integrated circuit, 4 pin; The other end of capacitor C 208, the other end of capacitor C 207, another termination+5V power supply of resistance R 216.
20 pin of integrated circuit U205 connect+the 12V DC power supply; 26 pin of integrated circuit U205 connect-the 12V DC power supply
Embodiment 3 (seeing accompanying drawing 4) adopts following electrically connecting:
8 pin of J301 connect an end of resistance R 316, an end of resistance R 301, an end of capacitor C 301; 7 pin of J301 connect an end of resistance R 317, an end of resistance R 302, an end of capacitor C 303; 6 pin of J301 connect an end of resistance R 318, an end of resistance R 303, an end of capacitor C 302; 3 pin of J301 connect an end of resistance R 319, an end of resistance R 304, the other end of capacitor C 304; 2 pin of J301 connect an end of resistance R 320, an end of resistance R 305, an end of capacitor C 305; 1 pin of J301 connects an end of resistance R 321, an end of resistance R 306, an end of capacitor C 306.
1 pin of inductance T301 connects an end of resistance R 307, the other end of capacitor C 301; 2 pin of inductance T301 connect 11 pin of integrated circuit U302; 3 pin of inductance T301 connect 10 pin of integrated circuit; 4 pin of inductance T301 connect 1 pin of resistance R 308, the other end of capacitor C 303.
1 pin of inductance T302 connects an end of resistance R 309, the other end of capacitor C 302; The other end of inductance T302 connects 5 pin of integrated circuit U302; 3 pin of inductance T302 connect 4 pin of integrated circuit U302; 4 pin of inductance T302 connect an end of resistance R 311, the other end of capacitor C 304;
1 pin of inductance T303 connects an end of resistance R 310, an end of capacitor C 305; 2 pin of inductance T303 connect 31 pin of integrated circuit U302; 3 pin of inductance T303 connect 3 pin of integrated circuit U302; 4 pin of inductance T303 connect an end of resistance R 312, the other end of capacitor C 306.
1 pin of integrated circuit U301 connects an end of resistance R 315, the other end of resistance R 320, the other end of resistance R 321; 2 pin of integrated circuit U301 connect an end of resistance R 314, the other end of resistance R 316, the other end of resistance R 317; 3 pin of integrated circuit U301 connect 14 pin of U301; 10 pin of integrated circuit U301 connect 5 pin of U301; 6 pin of integrated circuit connect an end of capacitor C 312, the other end of resistance R 315, the other end of resistance R 314; 7 pin of integrated circuit connect an end of resistance R 313; 13 pin of integrated circuit U301 connect 14 pin of J302; 11 pin of integrated circuit U301 connect 13 pin of J302; 15 pin of integrated circuit DU301 connect an end of resistance R 322,1 pin of triode D301,9 pin of U301.
One end of capacitor C 309 connects the other end of resistance R 301, the other end of resistance R 302.One end of capacitor C 310 connects the other end of resistance R 303, the other end of resistance R 304.One end of capacitor C 311 connects the other end of resistance R 305, the other end of resistance R 306.One end of capacitor C 313 connects the other end of resistance R 313, the other end of resistance R 318, the other end of resistance R 309.
21 pin of integrated circuit U302 connect 1 pin of VGA interface J302; 22 pin of integrated circuit U302 connect 2 pin of VGA interface J302; 23 pin of integrated circuit U302 connect 3 pin of VGA interface J302.
The other end of capacitor C 309, the other end of resistance R 307, the other end of resistance R 308, the other end of capacitor C 310, the other end of resistance R 309, the other end of resistance R 311, the other end of capacitor C 311, the other end of resistance R 310, the other end of resistance R 312, the other end of capacitor C 312, the other end of capacitor C 313, one end of capacitor C 307, one end of capacitor C 308,8 pin of integrated circuit U301,2 pin of triode D301,1 pin, 2 pin, 6 pin, 8 pin, 9 pin, 16 pin, 17 pin, 24 pin, 25 pin, 28 pin, 32 pin of integrated circuit U302,6 pin, 7 pin, 8 pin, 10 pin, the 5 pin ground connection of VGA interface J302.
16 pin, 4 pin of integrated circuit U301, the other end of capacitor C 307, the other end of capacitor C 308, another termination+5V power supply of resistance R 322.
The 20 pin connection+12V DC power supply of integrated circuit U302; The 26 pin connection-12V DC power supply of integrated circuit U302.
The anti-jamming circuit of this VGA signal also comprises multiple similar extension circuit.Because the restriction of length, in an embodiment, alternative integrated circuit is not listed one by one, functional similarity, and the different integrated circuit of model name is also in scope of the present utility model.
Claims (2)
1, a kind of enhancement mode anti-jamming circuit that adopts twisted-pair feeder transmission VGA signal, it is characterized in that: at first the vision signal that the difference video signal input interface circuit is received passes to difference video signal impedance matching, Signal Separation lattice network, and it is exported one the tunnel and directly send to the VGA signal output apparatus after strengthening anti-common mode disturbances type sync separator circuit processing; Another road enters high common mode input differential signal treatment circuit and is sent to the output of VGA signal output apparatus after treatment again after the isolation of vision signal electric capacity, anti-jamming circuit are handled.
2, the enhancement mode anti-jamming circuit of employing twisted-pair feeder as claimed in claim 1 transmission VGA signal is characterized in that: high common mode input differential signal treatment circuit (05) adopts AD8143, the AD8129 integrated circuit of input range for the high common mode input of ± 10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008202352753U CN201426151Y (en) | 2008-12-19 | 2008-12-19 | Enhanced anti-interference circuit by utilizing twisted-air cable to convey VGA signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008202352753U CN201426151Y (en) | 2008-12-19 | 2008-12-19 | Enhanced anti-interference circuit by utilizing twisted-air cable to convey VGA signal |
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| Publication Number | Publication Date |
|---|---|
| CN201426151Y true CN201426151Y (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008202352753U Expired - Fee Related CN201426151Y (en) | 2008-12-19 | 2008-12-19 | Enhanced anti-interference circuit by utilizing twisted-air cable to convey VGA signal |
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| CN (1) | CN201426151Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795957A (en) * | 2014-02-20 | 2014-05-14 | 山东超越数控电子有限公司 | Cascade mode based on twisted-pair video transmission |
-
2008
- 2008-12-19 CN CN2008202352753U patent/CN201426151Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795957A (en) * | 2014-02-20 | 2014-05-14 | 山东超越数控电子有限公司 | Cascade mode based on twisted-pair video transmission |
| CN103795957B (en) * | 2014-02-20 | 2017-09-26 | 山东超越数控电子有限公司 | A kind of Cascading Methods based on multiple twin transmission of video |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN UTP SCIENCE+TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: NIE HUAIJUN Effective date: 20100512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100512 Address after: 518040 Guangdong city of Shenzhen province Futian District science and Technology Parks Tairan 212 718 Patentee after: Shenzhen Youtepu Technology Co., Ltd. Address before: 518040 Guangdong city of Shenzhen province Futian District science and Technology Parks Tairan 212 718 Patentee before: Long Huaijun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |