CN209218222U - Video transmission device with OSD screen display - Google Patents
Video transmission device with OSD screen display Download PDFInfo
- Publication number
- CN209218222U CN209218222U CN201920249485.6U CN201920249485U CN209218222U CN 209218222 U CN209218222 U CN 209218222U CN 201920249485 U CN201920249485 U CN 201920249485U CN 209218222 U CN209218222 U CN 209218222U
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- signal
- circuit
- screen display
- video
- transmission power
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Abstract
The utility model discloses a kind of video transmission devices of band OSD screen display, including governor circuit, screen display circuit and transmit circuit, governor circuit is used to control the tranmitting frequency and transmission power of transmit circuit, and the numerical signal of tranmitting frequency and transmission power is exported to screen display circuit, governor circuit can receive external control signal, governor circuit adjusts the tranmitting frequency and transmission power of transmit circuit according to control signal, screen display circuit receives vision signal, screen display circuit receives the tranmitting frequency of governor circuit and the numerical signal of transmission power, and the numerical signal of tranmitting frequency and transmission power is blended into vision signal and generates video synthesis signal, then video synthesis signal is exported to transmit circuit, transmit circuit receives video synthesis signal, and launch after being modulated video synthesis signal.The video transmission device of band OSD screen display provided by the utility model, can show tranmitting frequency and transmission power, receiving end is allowed accurately to receive vision signal.
Description
Technical field
The utility model relates to technical field of video transmission, specifically, being related to a kind of video transmission dress of band OSD screen display
It sets.
Background technique
Collected vision signal is transmitted to ground receiver end by the camera on unmanned plane in real time, and ground receiver end passes through
Real-time video pictures control the flight of unmanned plane.The prior art is to be adjusted wireless hair only with traditional key
Radio frequency point.Receiver can only receive general frequency point, cannot accurately receive desired frequency point.It is very big to receive error, very
To 10MHZ or more is reached, cause the picture amplitude error received very big, image section is caused to be distorted, thus can not be smart in real time
The flight of quasi- control unmanned plane.
Utility model content
The purpose of this utility model is to provide a kind of video transmission devices of band OSD screen display, can show tranmitting frequency
And transmission power, allow receiving end accurately to receive vision signal.
Technical solution used by the video transmission device of band OSD screen display disclosed by the utility model is:
A kind of video transmission device of band OSD screen display, including governor circuit, screen display circuit and transmit circuit；
The governor circuit is used to control the tranmitting frequency and transmission power of transmit circuit, and by tranmitting frequency and emits function
The numerical signal of rate is exported to screen display circuit, and the governor circuit can receive external control signal, the governor circuit according to
Control the tranmitting frequency and transmission power of signal adjustment transmit circuit；
The screen display circuit receives the vision signal from video signal source, and the screen display circuit receives the hair of governor circuit
The numerical signal of radio frequency rate and transmission power, and the numerical signal of tranmitting frequency and transmission power is blended into life in vision signal
At video synthesis signal, then video synthesis signal is exported to transmit circuit；
The transmit circuit receives video synthesis signal, and launches after video synthesis signal is modulated.
Preferably, including preemphasis circuit, the video synthesis signal are exported after preemphasis circuit to hair
Transmit-receive radio road, the preemphasis circuit are used to compensate the high-frequency signal in video synthesis signal.
Preferably, the preemphasis circuit includes resistance R6, R7, R15 and capacitor C17.Resistance R6 and capacitor C17
Parallel connection, latter termination screen display circuit output end in parallel and the one end resistance R7, other end sending and receiving transmit-receive radio road input terminal and electricity after parallel connection
Hinder the one end R15, resistance R7 and resistance R15 other end ground connection.
Preferably, the transmit circuit includes model RTC6705 chip U3 and antenna, and the chip U3 completes view
Launched after the modulation of frequency composite signal by antenna.
Preferably, the transmit circuit includes bandpass filter, and the bandpass filter receives Video Composition letter
Number and carry out after bandpass filtering output to antenna.
Preferably, the screen display circuit includes model MAX7456-1 chip U2, and the chip U2 connects transceiving radio frequency
The numerical signal of rate and transmission power, the chip U2 receive the vision signal from video signal source, and by tranmitting frequency and
The numerical signal of transmission power, which is blended into vision signal, generates video synthesis signal.
The beneficial effect of the video transmission device of band OSD screen display disclosed by the utility model is: governor circuit control transmitting
The tranmitting frequency and transmission power of circuit, and the numerical signal of tranmitting frequency and transmission power is exported to screen display circuit, screen display
Circuit receives the tranmitting frequency of governor circuit and the numerical signal of transmission power, and screen display circuit receives the view from video signal source
Frequency signal, and the numerical signal of tranmitting frequency and transmission power is blended into vision signal and generates video synthesis signal, then
Video synthesis signal is launched by transmit circuit.After receiving end receives video synthesis signal, transmitting will be shown in video
The numerical value of frequency and transmission power, so receiving end can accurately can receive by adjusting corresponding reception frequency
To video synthesis signal.
Detailed description of the invention
Fig. 1 is the circuit diagram of video transmission device of the utility model with OSD screen display.
Fig. 2 is the transmit circuit circuit diagram of video transmission device of the utility model with OSD screen display.
Fig. 3 is the power circuit circuit diagram of video transmission device of the utility model with OSD screen display.
Specific embodiment
The utility model is further elaborated and is illustrated with Figure of description combined with specific embodiments below:
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the video transmission device with OSD screen display includes governor circuit, screen display circuit, pre-add
Weight circuit, transmit circuit and power circuit.
Governor circuit includes model STM8L151G3U6-1 chip U1.Chip U1 is electrically connected with transmit circuit and screen display circuit
It connects.Chip U1 is used to control the tranmitting frequency and transmission power of transmit circuit, and the numerical value of tranmitting frequency and transmission power is believed
Number output is to screen display circuit.
The control signal outside the reception of the port SMART AUDIO that chip U1 passes through open source, chip U1 is according to control signal
Adjust the tranmitting frequency and transmission power of transmit circuit.
Screen display circuit includes model MAX7456-1 chip U2.The tranmitting frequency and transmission power of chip U2 reception chip U1
Numerical signal, chip U2 receive the vision signal from video signal source, and by the numerical value of tranmitting frequency and transmission power believe
It number is blended into vision signal and generates video synthesis signal, then export video synthesis signal to preemphasis circuit.
Preemphasis circuit includes resistance R6, R7, R15 and capacitor C17.Resistance R6 and capacitor C17 are in parallel, latter termination in parallel
Screen display circuit output end and the one end resistance R7, it is in parallel after other end sending and receiving transmit-receive radio road input terminal and the one end resistance R15, resistance R7 and
Resistance R15 other end ground connection.Preemphasis circuit is used to compensate the high-frequency signal in video synthesis signal, improves the defeated of transmit circuit
Signal-to-noise ratio out enables receiving end preferably to receive video synthesis signal.
Transmit circuit includes model RTC6705 chip U3, bandpass filter F1 and antenna ANT.Chip U3 is received through pre-add
The vision signal of the synthesis of weight, chip U3 are integrated with the functions such as voltage controlled oscillator, phaselocked loop and power amplifier, voltage controlled oscillator
5.8GHz carrier frequency signaling is generated, stabilized simultaneously locks carrier frequency, the Video Composition that power amplifier will modulate
Signal carries out power amplification.It exports after the modulation of chip U3 completion video synthesis signal to bandpass filter F1, bandpass filter
F1 centre frequency is 5.8GHZ, and filtered video synthesis signal is launched by antenna ANT.
After receiving end receives video synthesis signal, the numerical value of tranmitting frequency and transmission power will be shown in video, in this way
One, which comes receiving end, can accurately can receive video synthesis signal by adjusting corresponding reception frequency.
Power circuit includes model RT9167A-33PB chip U4 and U5, and chip U4 is used to external voltage being converted to 3.6V
Voltage, chip U5 are used to external voltage being converted to 3.3V voltage.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than to this reality
With the limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be with the technical solution of the present invention is modified or equivalently replaced, without departing from this
The spirit and scope of utility model technical solution.
Claims (6)
1. a kind of video transmission device of band OSD screen display, which is characterized in that including governor circuit, screen display circuit and transmit circuit；
The governor circuit is used to control the tranmitting frequency and transmission power of transmit circuit, and by tranmitting frequency and transmission power
Numerical signal is exported to screen display circuit, and the governor circuit can receive external control signal, and the governor circuit is according to control
The tranmitting frequency and transmission power of signal adjustment transmit circuit；
The screen display circuit receives the vision signal from video signal source, and the screen display circuit receives the transmitting frequency of governor circuit
The numerical signal of rate and transmission power, and the numerical signal of tranmitting frequency and transmission power is blended into generate in vision signal and is regarded
Then frequency composite signal exports video synthesis signal to transmit circuit；
The transmit circuit receives video synthesis signal, and launches after video synthesis signal is modulated.
2. the video transmission device as described in claim 1 with OSD screen display, which is characterized in that described including preemphasis circuit
Video synthesis signal is exported after preemphasis circuit to transmit circuit, and the preemphasis circuit is for compensating video synthesis signal
In high-frequency signal.
3. the video transmission device with OSD screen display as claimed in claim 2, which is characterized in that the preemphasis circuit includes
Resistance R6, R7, R15 and capacitor C17, resistance R6 and capacitor C17 are in parallel, latter termination screen display circuit output end and resistance R7 in parallel
One end, other end sending and receiving transmit-receive radio road input terminal and the one end resistance R15 after parallel connection, resistance R7 and resistance R15 other end ground connection.
4. the video transmission device as described in claim 1 with OSD screen display, which is characterized in that the transmit circuit includes type
Number RTC6705 chip U3 and antenna, the chip U3 are launched after completing the modulation of video synthesis signal by antenna.
5. the video transmission device as claimed in claim 4 with OSD screen display, which is characterized in that the transmit circuit includes band
Bandpass filter, the bandpass filter receive video synthesis signal and export after carrying out bandpass filtering to antenna.
6. the video transmission device as described in claim 1 with OSD screen display, which is characterized in that the screen display circuit includes type
Number MAX7456-1 chip U2, the chip U2 receive the numerical signal of tranmitting frequency and transmission power, and the chip U2, which is received, to be come
From the vision signal of video signal source, and the numerical signal of tranmitting frequency and transmission power is blended into generate in vision signal and is regarded
Frequency composite signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249485.6U CN209218222U (en) | 2019-02-27 | 2019-02-27 | Video transmission device with OSD screen display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249485.6U CN209218222U (en) | 2019-02-27 | 2019-02-27 | Video transmission device with OSD screen display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209218222U true CN209218222U (en) | 2019-08-06 |
Family
ID=67467971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920249485.6U Active CN209218222U (en) | 2019-02-27 | 2019-02-27 | Video transmission device with OSD screen display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209218222U (en) |
-
2019
- 2019-02-27 CN CN201920249485.6U patent/CN209218222U/en active Active
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