CN205490812U - Displacement video analog signal treatment circuit - Google Patents
Displacement video analog signal treatment circuit Download PDFInfo
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- CN205490812U CN205490812U CN201620098495.0U CN201620098495U CN205490812U CN 205490812 U CN205490812 U CN 205490812U CN 201620098495 U CN201620098495 U CN 201620098495U CN 205490812 U CN205490812 U CN 205490812U
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- analog signal
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- displacement
- signal
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Abstract
The utility model discloses a treatment circuit, in particular to displacement video analog signal treatment circuit. The utility model discloses an including following module: multiway switch: be used for receiving multichannel video analog signal, under single -chip microcomputer module control, with the signal transmission shifting formwork piece that targets in place, the displacement module: carry out the displacement with video analog signal, analog -to -digital conversion module: with transmitting single -chip module after the video analog signal conversion to, single -chip module: handle back, the digital analog conversion module of redispatching with received video digital signal, the digital analog conversion module: convert received video digital signal into the video analog signal filter circuit that redispatches, filter circuit: the video analog signal who comes the transmission of digital analog conversion module handles back output. The utility model discloses carry out the displacement to video analog signal and handle, convert video analog signal into data signal effectively and handle the back reconversion and for video analog signal, realized multipath simulation signal timesharing conversion through the many -way selection moreover.
Description
Technical field
The present invention relates to a kind of process circuit, process circuit particularly to a kind of displacement video analog signal.
Background technology
Video analog signal refers to that each two field picture is the actual image signal of the natural scene obtained in real time.Video analog signal has low cost and the advantage such as Well-recovered, and video pictures often gives a kind of sensation on the spot in person of people.But its disadvantage is no matter that the image being recorded is how well, after long range propagation, the quality of the picture of video all can be substantially reduced, or after multiple copies, the distortion of picture will be clearly.
Simultaneously, it is many that video analog signal takies resource, stores and retrieves inconvenience, when transmission range is long, signal generation attenuation, distortion, group delay, and easily it is disturbed, makes image quality decrease, secondly, when wired analog signal is in monitoring device, cannot connect to the Internet, can only monitoring site in a point-to-point fashion, make installation work amount huge.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, it is provided that a kind of displacement video analog signal processes circuit.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of displacement video analog signal processes circuit, including with lower module: variable connector: be used for receiving multi-channel video analogue signal, under one-chip computer module control, transfer signals to displacement module；Displacement module: video analog signal is carried out displacement, the video analog signal after displacement is transferred to analog-to-digital conversion module；Analog-to-digital conversion module: video analog signal is converted to video signal and is transferred to one-chip computer module；One-chip computer module: after being processed by the video signal received, re-send to D/A converter module；D/A converter module: the video signal received is converted to video analog signal and re-sends to filter circuit；Filter circuit: video analog signal D/A converter module transmitted exports after processing.
Variable connector uses 4051 interface circuits, and the control end of 4051 connects single-chip microcomputer, and 4051 have low conduction impedance and the lowest by leakage current, it is ensured that the stability of signal.
Displacement module includes integrated transporting discharging LM741, the negative input end of integrated transporting discharging U3 is connected to signal input part by resistance R1, negative input end is connected to signal output part by resistance R2, positive input terminal is sequentially connected with resistance R3 and resistance R4 ground connection, the junction point of resistance R4 and R3 is connected on the positive bias voltage end of integrated transporting discharging U3 by resistance R5, using bleeder circuit, reduce the amplitude of video analog signal, the video analog signal effect making process is more preferable.
Analog-to-digital conversion module uses ADC0809, the channel address Strobe input of ADC0809 is connected with single-chip microcomputer by latch 74LS373, ADC0809 has 8 path analoging switch and associating addressing logic, itself IN0～IN7 is input end of analog signal, FPDP D0～D7 is directly connected to the data/address bus of single-chip microcomputer, it is achieved data are transmitted.
One-chip computer module uses AT89C51, is compressed digital video signal processing.
D/A converter module uses DAC0832, DAC0832 is 8 parallel-by-bit interface CMOS integrated circuits, also the data/address bus with single-chip microcomputer is joined directly together, it uses single buffer working method, internal input register can latch the data that monolithic is sent here, after digital video information runs up to certain data volume, exported by two delivery outlet through conversion.
Filter circuit uses two integrated transporting discharging LM324, the input of integrated transporting discharging U10A connects the outfan of D/A converter module, the outfan of integrated transporting discharging U10A is connected to the negative input end of integrated transporting discharging U10B by resistance R8, the positive input terminal ground connection of integrated transporting discharging U10B, the negative input end of integrated transporting discharging U10B is connected to its outfan by resistance R7, the outfan of integrated transporting discharging U10B passes through load resistance R9 output signal, the two ends of load resistance R9 are respectively by electric capacity C4 and C5 ground connection, DAC0832 belongs to current mode output, filter circuit is first converted into voltage output, glitch-free video analog signal is exported after being filtered by electric capacity C4 and C5.
Compared with prior art, beneficial effects of the present invention: video analog signal is carried out displacement process, video analog signal is converted to be reconverted into after digital signal processes video analog signal effectively, and achieves multichannel analog signals timesharing by multi-path choice and change.
Accompanying drawing illustrates:
Fig. 1 is native system complete schematic；
Fig. 2 is variable connector schematic diagram；
Fig. 3 is displacement module schematic diagram；
Fig. 4 is analog-to-digital conversion module and one-chip computer module catenation principle figure；
Fig. 5 is D/A converter module and one-chip computer module catenation principle figure；
Fig. 6 is filter circuit schematic diagram.
Detailed description of the invention
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
Embodiment
A kind of displacement video analog signal processes circuit, including with lower module: variable connector: be used for receiving multi-channel video analogue signal, under one-chip computer module control, transfer signals to displacement module；Displacement module: video analog signal is carried out displacement, the video analog signal after displacement is transferred to analog-to-digital conversion module；Analog-to-digital conversion module: video analog signal is converted to video signal and is transferred to one-chip computer module；One-chip computer module: after being processed by the video signal received, re-send to D/A converter module；D/A converter module: the video signal received is converted to video analog signal and re-sends to filter circuit；Filter circuit: video analog signal D/A converter module transmitted exports after processing.
Variable connector uses 4051 interface circuits, and the control end of 4051 connects single-chip microcomputer, and 4051 have low conduction impedance and the lowest by leakage current, it is ensured that the stability of signal.
Displacement module includes integrated transporting discharging LM741, the negative input end of integrated transporting discharging U3 is connected to signal input part by resistance R1, negative input end is connected to signal output part by resistance R2, positive input terminal is sequentially connected with resistance R3 and resistance R4 ground connection, the junction point of resistance R4 and R3 is connected on the positive bias voltage end of integrated transporting discharging U3 by resistance R5, using bleeder circuit, reduce the amplitude of video analog signal, the video analog signal effect making process is more preferable.
Analog-to-digital conversion module uses ADC0809, the channel address Strobe input of ADC0809 is connected with single-chip microcomputer by latch 74LS373, ADC0809 has 8 path analoging switch and associating addressing logic, itself IN0～IN7 is input end of analog signal, FPDP D0～D7 is directly connected to the data/address bus of single-chip microcomputer, it is achieved data are transmitted.
One-chip computer module uses AT89C51, is compressed digital video signal processing.
D/A converter module uses DAC0832, DAC0832 is 8 parallel-by-bit interface CMOS integrated circuits, also the data/address bus with single-chip microcomputer is joined directly together, it uses single buffer working method, internal input register can latch the data that monolithic is sent here, after digital video information runs up to certain data volume, exported by two delivery outlet through conversion.
Filter circuit uses two integrated transporting discharging LM324, the input of integrated transporting discharging U10A connects the outfan of D/A converter module, the outfan of integrated transporting discharging U10A is connected to the negative input end of integrated transporting discharging U10B by resistance R8, the positive input terminal ground connection of integrated transporting discharging U10B, the negative input end of integrated transporting discharging U10B is connected to its outfan by resistance R7, the outfan of integrated transporting discharging U10B passes through load resistance R9 output signal, the two ends of load resistance R9 are respectively by electric capacity C4 and C5 ground connection, DAC0832 belongs to current mode output, filter circuit is first converted into voltage output, glitch-free video analog signal is exported after being filtered by electric capacity C4 and C5.
Claims (7)
1. a displacement video analog signal processes circuit, it is characterised in that include with lower module:
Variable connector: be used for receiving multi-channel video analogue signal, under one-chip computer module control, transfers signals to displacement module module；
Displacement module: video analog signal is carried out displacement, the video analog signal after displacement is transferred to analog-to-digital conversion module；
Analog-to-digital conversion module: video analog signal is converted to video signal and is transferred to one-chip computer module；
One-chip computer module: after being processed by the video signal received, re-send to D/A converter module；
D/A converter module: the video signal received is converted to video analog signal and re-sends to filter circuit；
Filter circuit: video analog signal D/A converter module transmitted exports after processing.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterised in that described variable connector uses 4051 interface circuits, the control end of 4051 to connect single-chip microcomputer.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterized in that, described displacement module includes integrated transporting discharging LM741, the negative input end of integrated transporting discharging U3 is connected to signal input part by resistance R1, negative input end is connected to signal output part by resistance R2, positive input terminal is sequentially connected with resistance R3 and resistance R4 ground connection, and the junction point of resistance R4 and R3 is connected on the positive bias voltage end of integrated transporting discharging U3 by resistance R5.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterised in that described analog-to-digital conversion module uses the channel address Strobe input of ADC0809, ADC0809 to be connected with single-chip microcomputer by latch 74LS373.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterised in that described one-chip computer module uses AT89C51.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterised in that described D/A converter module uses DAC0832.
A kind of displacement video analog signal the most according to claim 1 processes circuit, it is characterized in that, described filter circuit uses two integrated transporting discharging LM324, the input of integrated transporting discharging U10A connects the outfan of D/A converter module, the outfan of integrated transporting discharging U10A is connected to the negative input end of integrated transporting discharging U10B by resistance R8, the positive input terminal ground connection of integrated transporting discharging U10B, the negative input end of integrated transporting discharging U10B is connected to its outfan by resistance R7, the outfan of integrated transporting discharging U10B passes through load resistance R9 output signal, the two ends of load resistance R9 are respectively by electric capacity C4 and C5 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620098495.0U CN205490812U (en) | 2016-02-01 | 2016-02-01 | Displacement video analog signal treatment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620098495.0U CN205490812U (en) | 2016-02-01 | 2016-02-01 | Displacement video analog signal treatment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490812U true CN205490812U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620098495.0U Expired - Fee Related CN205490812U (en) | 2016-02-01 | 2016-02-01 | Displacement video analog signal treatment circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490812U (en) |
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2016
- 2016-02-01 CN CN201620098495.0U patent/CN205490812U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ding Jiaqing Inventor before: Wu Kai Inventor before: Liu Fei Inventor before: Zhang Jian Inventor before: Li Cheng |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170320 Address after: 528244 Guangdong province Lishui Town Nanhai District Foshan city and Palace Road No. 38-49 (self) and building the first layer of the South Patentee after: Foshan Nanhai Rebecca Electrical Appliance Co. Ltd. Address before: 610041 Sichuan province Chengdu Tianfu four Street No. 66 Building 2 floor 8 No. 3 Patentee before: CHENGDU KECHUANGGU TECHNOLOGY CO., LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Displacement video analog signal processing circuit Effective date of registration: 20180427 Granted publication date: 20160817 Pledgee: Guangdong Nanhai rural commercial bank Limited by Share Ltd Li Shui branch Pledgor: Foshan Nanhai Rebecca Electrical Appliance Co. Ltd. Registration number: 2018440000100 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190524 Granted publication date: 20160817 Pledgee: Guangdong Nanhai rural commercial bank Limited by Share Ltd Li Shui branch Pledgor: Foshan Nanhai Rebecca Electrical Appliance Co. Ltd. Registration number: 2018440000100 |
|
| 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: 20160817 Termination date: 20200201 |