CN211089786U

CN211089786U - 4K equipment supporting 2-path 6G video conversion into 4-path 3G video signal

Info

Publication number: CN211089786U
Application number: CN201922456020.0U
Authority: CN
Inventors: 何泽军; 何锡军
Original assignee: Guangzhou Sokong Electronic Technology Co ltd
Current assignee: Guangzhou Sokong Electronic Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-07-24
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a video signal conversion field discloses a support 2 way 6G video to 4 way 3G video signal's 4K equipment, including 2 way 6G video signal collection modules, 2 way AD converting circuit, 6G change 3G video distributor, buffer memory module, 4 way video signal processing module, 4 way display module and power module, every way 6G video signal collection module's output is connected with the input of AD converting circuit, every way AD converting circuit's output is connected with 6G changes 3G video distributor's input; the power module comprises a first resistor, a second resistor, a first triode, a second triode, a third resistor, a first power supply, a second power supply, a switch, a first MOS (metal oxide semiconductor) tube, a fourth resistor, a fifth resistor, a second MOS tube, a sixth resistor, a third MOS tube and a voltage output end. The utility model discloses circuit structure is comparatively simple, convenient maintenance, the cost is lower, can improve the security and the reliability of circuit.

Description

4K equipment supporting 2-path 6G video conversion into 4-path 3G video signal

Technical Field

The utility model relates to a reach video signal conversion field, in particular to support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment.

Background

The video distributor can equally distribute one video signal source into a plurality of video signals. The working principle is to realize the functions of one-path video input and multi-path video output, so that the video output can be observed under the condition of no distortion or no definition loss. In general, a video distributor provides multiple independent video outputs and also has a video signal amplifying function, so the video distributor is also called a video distribution amplifier. The video distributor has video gain besides impedance matching, so that video signals can be simultaneously sent to a plurality of output devices in short distance without being influenced, thereby ensuring the synchronization of video transmission to a certain extent. Video distributors typically have 1 input 2 outputs (i.e., 1 in 2 out), 1 in 4 out, 1 in 8 out, and so on. The common video distributor has a plurality of models, such as 4 in 8 out, 16 in 32 out and the like. Some models also have the functions of a character superimposer and a video isolator. Also 2 points 4, 8 points 24, 16 points 48, etc.

Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional video signal distribution system, and it can be seen from fig. 1 that the power supply portion of the conventional video signal distribution system has many components, a complex circuit structure, a high hardware cost, and is inconvenient to maintain. In addition, since the power supply portion of the conventional video signal distribution system lacks a corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit structure comparatively simple, convenient maintenance, the cost is lower, can improve the security of circuit and the 4K equipment that 4 way 3G video signal was converted to the support 2 way 6G video of reliability.

The utility model provides a technical scheme that its technical problem adopted is: A4K device supporting conversion of 2-path 6G video into 4-path 3G video signals is constructed, and comprises a 2-path 6G video signal acquisition module, a 2-path A/D conversion circuit, a 6G-to-3G video distributor, a cache module, a 4-path video signal processing module, a 4-path display module and a power supply module, wherein the output end of each path of 6G video signal acquisition module is connected with the input end of the corresponding A/D conversion circuit, the output end of each path of A/D conversion circuit is connected with the input end of the 6G-to-3G video distributor, 4 output ends of the 6G-to-3G video distributor are respectively connected with one input end of the corresponding video signal processing module, the output end of each path of video signal processing module is respectively connected with the input end of the corresponding display module, and the cache module is connected with the 6G-to-3G video distributor, the output end of the power supply module is respectively connected with the other input end of each video signal processing module;

the power module comprises a first resistor, a second resistor, a first triode, a second triode, a third resistor, a first power supply, a second power supply, a switch, a first MOS (metal oxide semiconductor) tube, a fourth resistor, a fifth resistor, a second MOS tube, a sixth resistor, a third MOS tube and a voltage output end, wherein a collector of the first triode is respectively connected with one end of the first resistor and a base of the second triode, an emitter of the first triode is grounded, the base of the first triode is respectively connected with one end of the switch and a grid of the second MOS tube through the second resistor, the other end of the switch is connected with the second power supply, a collector of the second triode is respectively connected with one end of the third resistor and the grid of the first MOS tube, and an emitter of the second triode is respectively connected with a source of the first MOS tube and one end of the fifth resistor, The other end of the first resistor, the source electrode of the third MOS tube and the first power supply are connected, the drain electrode of the first MOS tube is connected with the other end of the fifth resistor, the grid electrode of the third MOS tube and the drain electrode of the second MOS tube through the fourth resistor, the source electrode of the second MOS tube is grounded through the sixth resistor, the emitting electrode of the first triode and the other end of the third resistor are grounded, and the drain electrode of the third MOS tube is connected with the voltage output end.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, the resistance of sixth resistance is 32K omega.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, power module still includes first diode, the projecting pole of first triode with the positive pole of first diode is connected, the negative pole ground connection of first diode.

In the 4K device of the present invention for supporting 2 channels of 6G video to be converted into 4 channels of 3G video signals, the model of the first diode is E-822.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, first triode is NPN type triode.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, the second triode is PNP type triode.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, first MOS pipe is P channel MOS pipe.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, the second MOS pipe is N channel MOS pipe.

Support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment in, the third MOS pipe is P channel MOS pipe.

Implement the utility model discloses a support 2 way 6G video conversion to 4 way 3G video signal's 4K equipment, have following beneficial effect: because the video signal acquisition module comprises 2 paths of 6G video signal acquisition modules, 2 paths of A/D conversion circuits, a 6G-to-3G video distributor, a cache module, 4 paths of video signal processing modules, 4 paths of display modules and a power supply module, wherein the power supply module comprises a first resistor, a second resistor, a first triode, a second triode, a third resistor, a first power supply, a second power supply, a switch, a first MOS (metal oxide semiconductor) tube, a fourth resistor, a fifth resistor, a second MOS tube, a sixth resistor, a third MOS tube and a voltage output end, compared with the power supply part of the traditional video signal distribution system, the used components are fewer, and because some components are saved, the hardware cost can be reduced, in addition, the sixth resistance is used for carrying out current-limiting protection, consequently the utility model discloses circuit structure is comparatively simple, convenient maintenance, the cost is lower, can improve the security and the reliability of circuit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic circuit diagram of a power supply portion of a conventional video signal distribution system;

fig. 2 is a schematic structural diagram of an embodiment of a 4K device supporting conversion from 2-channel 6G video to 4-channel 3G video signals according to the present invention;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses support 2 way 6G video to convert 4 way 3G video signal's 4K equipment embodiment, its structural schematic that supports 2 way 6G video to convert 4 way 3G video signal's 4K equipment is shown in fig. 2. In fig. 2, the 4K device supporting conversion of 2-channel 6G video into 4-channel 3G video signals includes a 2-channel 6G video signal acquisition module 1, a 2-channel a/D conversion circuit 2, a 6G-to-3G video distributor 3, a buffer module 4, a 4-channel video signal processing module 5, a 4-channel display module 6 and a power module 7, wherein an output end of each channel 6G video signal acquisition module 1 is connected to an input end of the corresponding a/D conversion circuit 2, an output end of each channel a/D conversion circuit 2 is connected to an input end of the 6G-to-3G video distributor 3, 4 output ends of the 6G-to-3G video distributor 3 are respectively connected to an input end of the corresponding video signal processing module 5, output ends of each channel video signal processing module 5 are respectively connected to an input end of the corresponding display module 6, and the buffer module 4 is connected to the 6G-to-3G video distributor 3, the output end of the power supply module 7 is connected with the other input end of each video signal processing module 5.

The 2-path 6G video signal acquisition module 1 acquires real-time monitoring video signals at a preset position and forms 2-path 6G video signal output, and the A/D conversion circuit 2 converts the received corresponding 6G video signals into digital signals matched with the 6G-to-3G video distributor 3 and outputs the digital signals. The 6G-to-3G video distributor 3 receives the digital signal, distributes the digital signal into 4 paths of 3G video signals and outputs the signals. Each video signal processing module 5 receives the corresponding 3G video signal formed by the 6G to 3G video distributor 3, and processes the 3G video signal. The 2-path 6G video signals can be simultaneously converted into 2-path digital signals through the 2-path/D conversion circuit 2, and the 2-path digital signals are distributed into 4-path 3G video signals to be output through the 6G-to-3G video distributor 3. The video signal processing module 5 does not need to participate in signal separation, the requirement on the processing module is low, the conventional processing module can be realized, and the design cost is low.

The buffer module 4 is used for storing the digital signal output from the a/D conversion circuit 2. The buffer module 4 is arranged, so that the 6G-to-3G video distributor 3 can read data and distribute data at the same time, and when 2 paths of digital signals are distributed into 4 paths of 3G video signals for output, the integrity of output signals is ensured.

The video signal processing module 5 reads and processes the 3G video signal from the 6G-to-3G video distributor 3 and outputs the 3G video signal to the display module 6, the video signal processing module 5 distributes the signal processing and then directly transmits the signal processing to the output device, the monitored object can be reflected visually and truly in real time, and the loss of human bodies and property caused by the delay of the monitoring video display is avoided in case of emergency.

In this embodiment, the 6G video signal acquisition module 1, the a/D conversion circuit 2, the 6G to 3G video distributor 3, the buffer module 4, the video signal processing module 5, and the display module 6 are all implemented by using structures in the prior art, and the working principle thereof is also the working principle in the prior art, which is not described herein.

Fig. 3 is a schematic circuit diagram of the power module in this embodiment, in fig. 3, the power module 7 includes a first resistor R1, a second resistor R2, a first transistor Q1, a second transistor Q2, a third resistor R3, a first power VCC, a second power VDD, a switch S1, a first MOS transistor M1, a fourth resistor R4, a fifth resistor R5, a second MOS transistor M2, a sixth resistor R6, a third MOS transistor M3, and a voltage output Vo, wherein a collector of the first transistor Q1 is connected to one end of the first resistor R1 and a base of the second transistor Q2, an emitter of the first transistor Q1 is grounded, a base of the first transistor Q1 is connected to one end of the switch S1 and a gate of the second MOS transistor M2 through the second resistor R2, another end of the switch S1 is connected to the second power supply, a collector of the second transistor Q2 is connected to a gate of the first resistor R3 and a gate of the third transistor M1, an emitter of the second triode Q2 is connected with a source of the first MOS transistor M1, one end of a fifth resistor R5, the other end of the first resistor R1, a source of the third MOS transistor M3 and the first power VCC, a drain of the first MOS transistor M1 is connected with the other end of the fifth resistor R5, a gate of the third MOS transistor M3 and a drain of the second MOS transistor M2 through a fourth resistor R4, a source of the second MOS transistor M2 is grounded through a sixth resistor, an emitter of the first triode Q1 and the other end of the third resistor R3 are both grounded, and a drain of the third MOS transistor M3 is connected with the voltage output terminal Vo.

Compared with the power supply part of the traditional video signal distribution system in fig. 1, the power supply module 7 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the sixth resistor R6 is a current limiting resistor, and is used for current limiting protection of the source current of the second MOS transistor M2. The principle of current protection is as follows: when the source current of the second MOS transistor M2 is large, the sixth resistor R6 can reduce the source current of the second MOS transistor M2 to keep it in a normal operating state, so as to prevent the device in the circuit from being burned out due to too large current, thereby improving the safety and reliability of the circuit. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 32k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be increased or decreased according to specific situations.

The working principle of the power module 7 is as follows: when the control switch S1 is closed, the second MOS transistor M2 and the third MOS transistor M3 are connected, the first MOS transistor M1 is controlled to be disconnected, the first power supply VCC is not interfered to supply power to a load, when the switch S1 is opened, the second MOS transistor M2 is disconnected, the first MOS transistor M1 is controlled to be connected, the fourth resistor R4 is connected with the fifth resistor R5 in parallel, the voltage drop on the fifth resistor R5 caused by the leakage current of the second MOS transistor M2 is reduced, abnormal power supply consumption is reduced, and the use reliability of the circuit is improved.

In this embodiment, the first transistor Q1 is an NPN transistor, the second transistor Q2 is a PNP transistor, the first MOS transistor M1 is a P-channel MOS transistor, the second MOS transistor M2 is an N-channel MOS transistor, and the third MOS transistor M3 is a P-channel MOS transistor.

In this embodiment, the power module 7 further includes a first diode D1, an emitter of the first transistor Q1 is connected to an anode of the first diode D1, and a cathode of the first diode D1 is grounded. The first diode D1 is a current limiting diode for current limiting protection of the emitter current of the first transistor Q1. The current limiting protection principle is as follows: when the emitter current of the first triode Q1 is large, the first diode D1 can reduce the emitter current of the first triode Q1 to keep the first triode Q1 in a normal working state, so that the elements in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the embodiment, the first diode D1 is of a type E-822. Of course, in practical applications, the first diode D1 may also be another type of diode with the same function.

In short, in this embodiment, compared with the power supply part of the conventional video signal distribution system, the power supply module 7 has fewer used components, simpler circuit structure and convenient maintenance, and can reduce the hardware cost due to the saving of some components. In addition, since the power supply module 7 is provided with a current limiting resistor, the safety and reliability of the circuit can be improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A4K device supporting conversion of 2-path 6G video into 4-path 3G video signals is characterized by comprising a 2-path 6G video signal acquisition module, a 2-path A/D conversion circuit, a 6G-to-3G video distributor, a cache module, a 4-path video signal processing module, a 4-path display module and a power supply module, wherein the output end of each path of 6G video signal acquisition module is connected with the input end of the corresponding A/D conversion circuit, the output end of each path of A/D conversion circuit is connected with the input end of the 6G-to-3G video distributor, 4 output ends of the 6G-to-3G video distributor are respectively connected with one input end of the corresponding video signal processing module, the output end of each path of video signal processing module is respectively connected with the input end of the corresponding display module, and the cache module is connected with the 6G-to-3G video distributor, the output end of the power supply module is respectively connected with the other input end of each video signal processing module;

2. The 4K device according to claim 1, wherein the sixth resistor has a resistance of 32K Ω, and wherein the sixth resistor has a resistance of 4G video signals.

3. The 4K device of claim 1, wherein the power module further comprises a first diode, an emitter of the first transistor is connected to an anode of the first diode, and a cathode of the first diode is grounded.

4. The 4K device supporting conversion of 2-way 6G video into 4-way 3G video signal according to claim 3, wherein the first diode is of type E-822.

5. A4K device according to any of claims 1 to 4, wherein the first transistor is an NPN transistor, and wherein the 4K device supports 2-way 6G video conversion into 4-way 3G video signals.

6. The 4K device according to any of claims 1-4, wherein the second transistor is a PNP transistor capable of converting 2-way 6G video into 4-way 3G video.

7. The 4K device supporting conversion of 2-channel 6G video into 4-channel 3G video signals according to any one of claims 1 to 4, wherein the first MOS transistor is a P-channel MOS transistor.

8. The 4K device supporting 2-channel 6G video conversion into 4-channel 3G video signals according to any one of claims 1 to 4, wherein the second MOS transistor is an N-channel MOS transistor.

9. The 4K device supporting 2-channel 6G video conversion into 4-channel 3G video signals according to any one of claims 1 to 4, wherein the third MOS transistor is a P-channel MOS transistor.