CN103475824A - Split-screen circuit for urban video monitoring - Google Patents
Split-screen circuit for urban video monitoring Download PDFInfo
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- CN103475824A CN103475824A CN 201310422088 CN201310422088A CN103475824A CN 103475824 A CN103475824 A CN 103475824A CN 201310422088 CN201310422088 CN 201310422088 CN 201310422088 A CN201310422088 A CN 201310422088A CN 103475824 A CN103475824 A CN 103475824A
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Abstract
The invention discloses a split-screen circuit for urban video monitoring. The input end of the split-screen circuit for urban video monitoring is connected with a video input signal. The split-screen circuit for urban video monitoring comprises a direct-current power source, a first resistor to a sixteenth resistor, a first capacitor to a seventh capacitor, and a first transistor to a fourth transistor, wherein a signal amplification circuit is formed by the first resistor to the tenth resistor, the first capacitor to the fifth capacitor and the first transistor to the fourth transistor, a signal distribution circuit is formed by the thirteenth resistor, the fourteenth resistor, the fifteenth resistor and the sixteenth resistor, a negative feedback circuit is formed by the eleventh resistor, the twelfth resistor, the sixth capacitor and the seventh capacitor, the circuits can meet the requirement that four paths of high-power split-screen signals are output, the degree of signal distortion is reduced to the greatest extent, and output impedance is reduced. The split-screen circuit for urban video monitoring has the advantages of being simple in structure, low in cost, low in degree of distortion, clear in video, and capable of being widely applied to urban video monitoring in various places.
Description
Technical field
The present invention relates to a kind of video separated screen circuit more than a minute, relate in particular to a kind of circuit of the split screen for city video monitoring.
Background technology
Along with the depth development of electronic industry, the application of city video monitoring is very extensive.In actual applications, different video can be closed as required to screen or split screen and be processed, to meet the purpose of video monitoring.In existing video separated screen circuit, split screen circuit structure more complicated, cost that video definition is high, distortion is little are higher, and its video definition deficiency of split screen circuit with low cost, be difficult to meet application demand.
Summary of the invention
Purpose of the present invention with regard to be to provide in order to address the above problem a kind of simple in structure, with low cost, the distortion factor is little, video is clearly for the split screen circuit of city video monitoring.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Split screen for city video monitoring circuit of the present invention, its input connects video input signals, comprise DC power supply, the first resistance～the 16 resistance, the first electric capacity～the 7th electric capacity, the first transistor～the 4th transistor, the first end of the first end of described the first resistance and described the first electric capacity interconnects and as the input of described split screen circuit, the second end of described the first electric capacity respectively with the first end of described the second resistance, the first end of the 3rd resistance is connected with the base stage of described the first transistor, the emitter of described the first transistor respectively with the first end of described the 4th resistance, the first end of described the 11 resistance is connected with the first end of described the 12 resistance, the collector electrode of described the first transistor respectively with the second end of described the 3rd resistance, the first end of described the 5th resistance, the base stage of described transistor seconds is connected with the first end of described the second electric capacity, the collector electrode of described transistor seconds is connected with the first end of described the 6th resistance, the emitter of described transistor seconds is connected with described the 4th transistorized base stage with the first end of described the 7th resistance respectively, the second end of described the 7th resistance is connected with the first end of described the 3rd electric capacity with the first end of described the 8th resistance respectively, described the 4th transistorized emitter is connected with the first end of described the 5th electric capacity with the first end of described the tenth resistance respectively, described the 4th transistorized collector electrode respectively with described the 3rd transistorized emitter, the second end of described the 11 resistance is connected with the first end of described the 6th electric capacity, described the 3rd transistorized base stage is connected with the second end of described the second electric capacity, described the 3rd transistorized collector electrode is connected with the first end of described the 4th electric capacity with the first end of described the 9th resistance respectively, the second end of described the 12 resistance is connected with the first end of described the 7th electric capacity, the second end of described the 7th electric capacity respectively with the second end of described the 6th electric capacity, the first end of described the 13 resistance, the first end of described the 14 resistance, the first end of described the 15 resistance is connected with the first end of described the 16 resistance, the positive pole of described DC power supply, the second end of described the second resistance, the second end of described the 4th resistance, the second end of described the 6th resistance, the second end of the second end of described the 9th resistance and described the 4th electric capacity interconnects, the negative pole of described DC power supply, the second end of described the first resistance, the second end of described the 5th resistance, the second end of described the 8th resistance, the second end of described the 3rd electric capacity, the second end of the second end of described the tenth resistance and described the 5th electric capacity interconnects, the second end of described the 13 resistance, the second end of described the 14 resistance, the second end of described the 15 resistance and the second end of described the 16 resistance are respectively four split screen signal output parts of described split screen circuit.
Beneficial effect of the present invention is:
Split screen circuit of the present invention comprises signal amplification circuit, signal distribution circuit and negative-feedback circuit, these circuit reduce distorted signals in the split screen signal output that meets four tunnel relatively high powers as far as possible, and reduction output impedance, have simple in structure, with low cost, the distortion factor is little, video advantage clearly, can be widely used in the city video monitoring in various places.
The accompanying drawing explanation
Fig. 1 is the circuit diagram of the circuit of the split screen for city video monitoring of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, this split screen circuit comprises the 12V DC power supply, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the first transistor VT1, transistor seconds VT2, the 3rd transistor VT3 and the 4th transistor VT4, the first end of the first end of the first resistance R 1 and the first capacitor C 1 interconnects and as the input Ui of described split screen circuit and be connected total video input signals, the second end of the first capacitor C 1 respectively with the first end of the second resistance R 2, the first end of the 3rd resistance R 3 is connected with the base stage of first crystal VT1, the emitter of the first transistor VT1 respectively with the first end of the 4th resistance R 4, the first end of the 11 resistance R 11 is connected with the first end of the 12 resistance R 12, the collector electrode of the first transistor VT1 respectively with the second end of the 3rd resistance R 3, the first end of the 5th resistance R 5, the base stage of transistor seconds VT2 is connected with the first end of the second capacitor C 2, the collector electrode of transistor seconds VT2 is connected with the first end of the 6th resistance R 6, the emitter of transistor seconds VT2 is connected with the base stage of the 4th transistor VT4 with the first end of the 7th resistance R 7 respectively, the second end of the 7th resistance R 7 is connected with the first end of the 3rd capacitor C 3 with the first end of the 8th resistance R 8 respectively, the emitter of the 4th transistor VT4 is connected with the first end of the 5th capacitor C 5 with the first end of the tenth resistance R 10 respectively, the collector electrode of the 4th transistor VT4 respectively with the emitter of the 3rd transistor VT3, the second end of the 11 resistance R 11 is connected with the first end of the 6th capacitor C 6, the base stage of the 3rd transistor VT3 is connected with the second end of the second capacitor C 2, the collector electrode of the 3rd transistor VT3 is connected with the first end of the 4th capacitor C 4 with the first end of the 9th resistance R 9 respectively, the second end of the 12 resistance R 12 is connected with the first end of the 7th capacitor C 7, the second end of the 7th capacitor C 7 respectively with the second end of the 6th capacitor C 6, the first end of the 13 resistance R 13, the first end of the 14 resistance R 14, the first end of the 15 resistance R 15 is connected with the first end of the 16 resistance R 16, the positive pole of 12V DC power supply, the second end of the second resistance R 2, the second end of the 4th resistance R 4, the second end of the 6th resistance R 6, the second end of the second end of the 9th resistance R 9 and the 4th capacitor C 4 interconnects, the negative pole of 12V DC power supply, the second end of the first resistance R 1, the second end of the 5th resistance R 5, the second end of the 8th resistance R 8, the second end of the 3rd capacitor C 3, the second end of the second end of the tenth resistance R 10 and the 5th capacitor C 5 interconnects, the second end of the 13 resistance R 13, the second end of the 14 resistance R 14, the second end of the 15 resistance R 15 and the second end of the 16 resistance R 16 are respectively four split screen signal output parts of described split screen circuit.
In foregoing circuit, the first resistance R 1～the tenth resistance R 10, the first capacitor C 1～the 5th capacitor C 5 and the first transistor VT1～the 4th transistor VT4 forms signal amplification circuit, the 13 resistance R the 13, the 14 resistance R the 14, the 15 resistance R 15 and the 16 resistance R 16 form signal distribution circuit, the 11 resistance R the 11, the 12 resistance R 12, the 6th capacitor C 6 and the 7th capacitor C 7 form negative-feedback circuit, these circuit reduce distorted signals in the split screen signal output that meets four tunnel relatively high powers as far as possible, and reduce output impedance.
Claims (1)
1. the circuit of the split screen for city video monitoring, its input connects video input signals, it is characterized in that: comprise DC power supply, the first resistance～the 16 resistance, the first electric capacity～the 7th electric capacity, the first transistor～the 4th transistor, the first end of the first end of described the first resistance and described the first electric capacity interconnects and as the input of described split screen circuit, the second end of described the first electric capacity respectively with the first end of described the second resistance, the first end of the 3rd resistance is connected with the base stage of described the first transistor, the emitter of described the first transistor respectively with the first end of described the 4th resistance, the first end of described the 11 resistance is connected with the first end of described the 12 resistance, the collector electrode of described the first transistor respectively with the second end of described the 3rd resistance, the first end of described the 5th resistance, the base stage of described transistor seconds is connected with the first end of described the second electric capacity, the collector electrode of described transistor seconds is connected with the first end of described the 6th resistance, the emitter of described transistor seconds is connected with described the 4th transistorized base stage with the first end of described the 7th resistance respectively, the second end of described the 7th resistance is connected with the first end of described the 3rd electric capacity with the first end of described the 8th resistance respectively, described the 4th transistorized emitter is connected with the first end of described the 5th electric capacity with the first end of described the tenth resistance respectively, described the 4th transistorized collector electrode respectively with described the 3rd transistorized emitter, the second end of described the 11 resistance is connected with the first end of described the 6th electric capacity, described the 3rd transistorized base stage is connected with the second end of described the second electric capacity, described the 3rd transistorized collector electrode is connected with the first end of described the 4th electric capacity with the first end of described the 9th resistance respectively, the second end of described the 12 resistance is connected with the first end of described the 7th electric capacity, the second end of described the 7th electric capacity respectively with the second end of described the 6th electric capacity, the first end of described the 13 resistance, the first end of described the 14 resistance, the first end of described the 15 resistance is connected with the first end of described the 16 resistance, the positive pole of described DC power supply, the second end of described the second resistance, the second end of described the 4th resistance, the second end of described the 6th resistance, the second end of the second end of described the 9th resistance and described the 4th electric capacity interconnects, the negative pole of described DC power supply, the second end of described the first resistance, the second end of described the 5th resistance, the second end of described the 8th resistance, the second end of described the 3rd electric capacity, the second end of the second end of described the tenth resistance and described the 5th electric capacity interconnects, the second end of described the 13 resistance, the second end of described the 14 resistance, the second end of described the 15 resistance and the second end of described the 16 resistance are respectively four split screen signal output parts of described split screen circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310422088 CN103475824A (en) | 2013-09-16 | 2013-09-16 | Split-screen circuit for urban video monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310422088 CN103475824A (en) | 2013-09-16 | 2013-09-16 | Split-screen circuit for urban video monitoring |
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| CN103475824A true CN103475824A (en) | 2013-12-25 |
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| CN 201310422088 Pending CN103475824A (en) | 2013-09-16 | 2013-09-16 | Split-screen circuit for urban video monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994349A (en) * | 2015-07-02 | 2015-10-21 | 宁波摩米创新工场电子科技有限公司 | Smart high-definition multi-screen image processing system |
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2013
- 2013-09-16 CN CN 201310422088 patent/CN103475824A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994349A (en) * | 2015-07-02 | 2015-10-21 | 宁波摩米创新工场电子科技有限公司 | Smart high-definition multi-screen image processing system |
| CN104994349B (en) * | 2015-07-02 | 2017-12-01 | 宁波摩米创新工场电子科技有限公司 | A kind of intelligent high-definition multi-screen image processing system |
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Application publication date: 20131225 |
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| WD01 | Invention patent application deemed withdrawn after publication |