CN111193839A - Computer video signal transmission processor - Google Patents
Computer video signal transmission processor Download PDFInfo
- Publication number
- CN111193839A CN111193839A CN201911301783.6A CN201911301783A CN111193839A CN 111193839 A CN111193839 A CN 111193839A CN 201911301783 A CN201911301783 A CN 201911301783A CN 111193839 A CN111193839 A CN 111193839A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistor
- chip
- triode
- video signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/148—Video amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
Abstract
The invention discloses a computer video signal transmission processor, which comprises a first capacitor to a seventh capacitor, a first resistor to a third resistor, an inductor, a triode, an amplifier chip, a power supply chip, a light emitting diode and an antenna, wherein a video signal is input into a high-pass filter circuit consisting of the first capacitor, the inductor and the second capacitor to filter frequencies lower than 45MHz, then the video signal is amplified by a preamplifier consisting of the triode, the first resistor and the second resistor and then is sent to the amplifier chip by the third capacitor to be amplified, and an output signal is emitted by the antenna.
Description
Technical Field
The invention relates to the technical field of computer hardware, in particular to a computer video signal transmission processor.
Background
The application of computers is more and more common in China, after the innovation is opened, the number of Chinese computer users is continuously increased, the application level is continuously improved, and particularly, the application in the fields of Internet, communication, multimedia and the like obtains good results. In the prior art, video signals of a computer are all transmitted by wires, but it is troublesome to install a plurality of cables by wire transmission under the condition that a plurality of video signals are required to be transmitted, and wireless signal transmission is interfered by environmental electromagnetic waves, so that the signal transmission quality is reduced, and therefore, there is a room for improvement.
Disclosure of Invention
The present invention is directed to solving the above problems and providing a computer video signal transmission processor.
The invention realizes the purpose through the following technical scheme:
the invention comprises first to seventh capacitors, first to third resistors, an inductor, a triode, an amplifier chip, a power chip, a light emitting diode and an antenna, wherein the first end of the first capacitor is a video signal positive input end, the second end of the first capacitor is simultaneously connected with the first end of the inductor and the first end of the second capacitor, the second end of the second capacitor is simultaneously connected with a base electrode of the triode and the first end of the first resistor, the second end of the first resistor is simultaneously connected with the first end of the second resistor, the first end of the fourth capacitor, a positive power supply end of the amplifier chip, the first end of the sixth capacitor and the input end of the power chip, an emitter of the triode is simultaneously connected with the second end of the inductor, the second end of the fourth capacitor, a negative power supply end of the amplifier chip, the second end of the sixth capacitor, the negative electrode of the power chip, the first end of the third resistor, and the antenna, The first end of the seventh capacitor is connected with the negative electrode of the power supply, the collector of the triode is connected with the second end of the second resistor and the first end of the third capacitor, the second end of the third capacitor is connected with the signal input end of the amplifier chip, the signal output end of the amplifier chip is connected with the first end of the fifth capacitor, the second end of the fifth capacitor is connected with the antenna, the second end of the third resistor is connected with the negative electrode of the light emitting diode, and the positive electrode of the light emitting diode is connected with the output end of the power supply chip, the positive electrode of the power supply and the second end of the seventh capacitor.
The invention has the beneficial effects that:
compared with the prior art, the invention can filter interference, improve the signal transmission quality, improve the image quality, amplify the signal, adopt a wireless transmission mode, avoid the complexity of wiring and has popularization and application values.
Drawings
Fig. 1 is a schematic diagram of the circuit configuration of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1: the invention comprises a first capacitor C1 to a seventh capacitor C7, a first resistor R1 to a third resistor R3, an inductor L, a triode VT, an amplifier chip IC1, a power chip IC2, a light emitting diode LED and an antenna TX, wherein a first end of the first capacitor C1 is a video signal positive input end, a second end of the first capacitor C1 is simultaneously connected with a first end of the inductor L and a first end of a second capacitor C2, a second end of the second capacitor C2 is simultaneously connected with a base of the triode VT and a first end of the first resistor R1, a second end of the first resistor R1 is simultaneously connected with a first end of the second resistor R2, a first end of the fourth capacitor C4, a positive power supply end of the amplifier chip IC1, a first end of the sixth capacitor C6 and an input end of the power chip IC2, an emitter of the triode VT is simultaneously connected with a second end of the inductor L, a second end of the fourth capacitor C4, a negative electrode of the amplifier chip IC 68525 and a power supply end of the amplifier chip IC1, The second end of the sixth capacitor C6, the negative electrode of the power chip IC2, the first end of the third resistor R3, the first end of the seventh capacitor C7 are connected with the negative electrode of the power supply, the collector of the triode VT is connected with the second end of the second resistor R2 and the first end of the third capacitor C3 at the same time, the second end of the third capacitor C3 is connected with the signal input end of the amplifier chip IC1, the signal output end of the amplifier chip IC1 is connected with the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is connected with the antenna TX, the second end of the third resistor R3 is connected with the negative electrode of the light emitting diode LED, and the positive electrode of the light emitting diode LED is connected with the output end of the power chip IC2, the positive electrode of the power supply and the second end of the seventh capacitor C7.
The working principle of the invention is as follows:
the video signal is input into a high-pass filter circuit consisting of a first capacitor C1, an inductor L and a second capacitor C2 to filter frequencies lower than 45MHz, then the video signal is amplified by a preamplifier consisting of a triode VT, a first resistor R1 and a second resistor R2 and then sent to an amplifier chip IC1 by a third capacitor C3 for power amplification, an output signal of the video signal is transmitted out by an antenna, and the antenna can adopt a whip antenna of about 60 cm. The power supply chip IC2 and the light emitting diode LED form a voltage stabilizing and power supply indication to provide 9V power supply for the amplifier chip IC 1.
Selecting components:
the amplifier chip IC1 is a high-gain high-frequency amplification integrated circuit, the triode VT is a low-noise ultrahigh-frequency triode, high-frequency ceramic dielectric capacitors are selected for the first capacitor C1 and the second capacitor C2, common carbon film resistors are used for the first resistor R1 and the third resistor R3, an inductor L is manufactured by tightly winding enamelled wires of 0.2mm on a cylinder with the diameter of 3mm and demoulding for 16 circles, and a 60cm whip antenna is used as the antenna.
Installing and debugging:
the working current of the circuit is about 25MA, the working current of the triode VT is about 5MA, a coaxial cable of 75 ohms is selected as an output cable of the video output equipment, the length is as short as possible, the interference of the antenna can be reduced by adopting full shielding, and the emitter normally works under the condition that components have no quality problem.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A computer video signal transmission processor, characterized by: the LED driving circuit comprises first to seventh capacitors, first to third resistors, an inductor, a triode, an amplifier chip, a power chip, a light emitting diode and an antenna, wherein the first end of the first capacitor is a video signal positive input end, the second end of the first capacitor is connected with the first end of the inductor and the first end of the second capacitor at the same time, the second end of the second capacitor is connected with a base electrode of the triode and the first end of the first resistor at the same time, the second end of the first resistor is connected with the first end of the second resistor, the first end of the fourth capacitor, a positive power supply end of the amplifier chip, the first end of the sixth capacitor and an input end of the power chip at the same time, and an emitter electrode of the triode is connected with the second end of the inductor, the second end of the fourth capacitor, a negative power supply end of the amplifier chip, the second end of the sixth capacitor, a negative electrode of the power chip, the first end of the third, The first end of the seventh capacitor is connected with the negative electrode of the power supply, the collector of the triode is connected with the second end of the second resistor and the first end of the third capacitor, the second end of the third capacitor is connected with the signal input end of the amplifier chip, the signal output end of the amplifier chip is connected with the first end of the fifth capacitor, the second end of the fifth capacitor is connected with the antenna, the second end of the third resistor is connected with the negative electrode of the light emitting diode, and the positive electrode of the light emitting diode is connected with the output end of the power supply chip, the positive electrode of the power supply and the second end of the seventh capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301783.6A CN111193839A (en) | 2019-12-17 | 2019-12-17 | Computer video signal transmission processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301783.6A CN111193839A (en) | 2019-12-17 | 2019-12-17 | Computer video signal transmission processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111193839A true CN111193839A (en) | 2020-05-22 |
Family
ID=70709818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911301783.6A Pending CN111193839A (en) | 2019-12-17 | 2019-12-17 | Computer video signal transmission processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111193839A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793328A (en) * | 1996-04-01 | 1998-08-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method and apparatus for determining position using global positioning satellites |
| US20110084764A1 (en) * | 2009-10-08 | 2011-04-14 | Ioan Alexandru Salomie | Amplifier and signal filter |
| CN202077120U (en) * | 2011-06-01 | 2011-12-14 | 山东科技大学 | Wireless television signal transmission and receiving device |
| CN204258953U (en) * | 2014-12-26 | 2015-04-08 | 周玉林 | Domestic TV signal wireless repeater |
| CN104660972A (en) * | 2013-11-25 | 2015-05-27 | 成都菲斯顿德科技有限公司 | Video signal transmitter for video monitoring |
-
2019
- 2019-12-17 CN CN201911301783.6A patent/CN111193839A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793328A (en) * | 1996-04-01 | 1998-08-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method and apparatus for determining position using global positioning satellites |
| US20110084764A1 (en) * | 2009-10-08 | 2011-04-14 | Ioan Alexandru Salomie | Amplifier and signal filter |
| CN202077120U (en) * | 2011-06-01 | 2011-12-14 | 山东科技大学 | Wireless television signal transmission and receiving device |
| CN104660972A (en) * | 2013-11-25 | 2015-05-27 | 成都菲斯顿德科技有限公司 | Video signal transmitter for video monitoring |
| CN204258953U (en) * | 2014-12-26 | 2015-04-08 | 周玉林 | Domestic TV signal wireless repeater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200522 |
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| RJ01 | Rejection of invention patent application after publication |