CN209218269U - 5.8G simulates WirelessHD audio-video receiving module - Google Patents
5.8G simulates WirelessHD audio-video receiving module Download PDFInfo
- Publication number
- CN209218269U CN209218269U CN201920249327.0U CN201920249327U CN209218269U CN 209218269 U CN209218269 U CN 209218269U CN 201920249327 U CN201920249327 U CN 201920249327U CN 209218269 U CN209218269 U CN 209218269U
- Authority
- CN
- China
- Prior art keywords
- circuit
- audio
- signal
- video
- filter
- 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.)
- Active
Links
Landscapes
- Noise Elimination (AREA)
Abstract
The utility model discloses a kind of 5.8G to simulate WirelessHD audio-video receiving module, including receiving circuit, demodulator circuit, video filtering circuit, audio filter circuit and high definition conversion circuit, it receives circuit and receives audio-video signal, and audio-video signal is exported to demodulator circuit, audio filter circuit filters out audio signal, and it exports to demodulator circuit, demodulator circuit carries out demodulation reduction to audio signal and exports, demodulator circuit exports after being mixed audio-video signal to video filtering circuit, video filtering circuit filters out vision signal, and it exports to demodulator circuit, demodulator circuit carries out demodulation reduction to vision signal and exports to high definition conversion circuit, vision signal after demodulation is converted to high-definition video signal and the output of high-definition format by high definition conversion circuit.5.8G provided by the utility model simulates WirelessHD audio-video receiving module, can transmit high-definition video signal, and meet real-time Transmission delay requirement well.
Description
Technical field
The utility model relates to wireless communication technology fields, specifically, being related to a kind of 5.8G simulation WirelessHD sound view
Frequency receiving module.
Background technique
Communication is broadly divided into analog signal communication and digital signal communication.When usually carrying out digital signal communication, need pair
Signal carries out digital-to-analogue conversion, and will lead to signal transmission in this way, there are biggish delays, so in the higher communication of requirement of real-time
In system, analog signal communication is generallyd use.And the scheme that existing wireless real-time monitoring generally uses has analog discrete components
Module, simulation wireless module, structure is complicated for these resolution circuitries, cannot transmit high-definition video signal, Image Real-time Transmission delay
It does not reach requirement.
Utility model content
The purpose of this utility model is to provide a kind of 5.8G to simulate WirelessHD audio-video receiving module, can transmit height
Clear vision signal, and meet real-time Transmission delay requirement well.
Technical solution used by 5.8G simulation WirelessHD audio-video receiving module disclosed by the utility model is:
A kind of 5.8G simulation WirelessHD audio-video receiving module, including receive circuit, demodulator circuit, video filtering electricity
Road, audio filter circuit and high definition conversion circuit；
The reception circuit receives audio-video signal, and audio-video signal is exported to demodulator circuit, the demodulator circuit
Audio-video signal is exported to audio filter circuit；
The audio filter circuit filters out the audio signal in audio-video signal, and exports to demodulator circuit, described
Demodulator circuit carries out demodulation reduction to audio signal and exports to external equipment；
The demodulator circuit exports after being mixed audio-video signal to video filtering circuit, the video filtering circuit
Vision signal in audio-video signal is filtered out, and is exported to demodulator circuit, the demodulator circuit solves vision signal
It adjusts and restores and export to high definition conversion circuit, the vision signal after demodulation is converted to high-definition format by the high definition conversion circuit
High-definition video signal is simultaneously exported to external equipment.
Preferably, including video buffer circuit, the video buffer circuit receive the vision signal after demodulation, into
It exports after row caching to high definition conversion circuit.
Preferably, the reception circuit includes antenna, the first bandpass filter and the first low-noise amplifier, institute
It states antenna and wireless signal is switched into electric signal, first bandpass filter filters out the audio-video signal in electric signal, institute
The first low-noise amplifier is stated to amplify the signal filtered out and export to demodulator circuit.
Preferably, the reception circuit further includes the second bandpass filter and the second low-noise amplifier, described
Second bandpass filter carries out postsearch screening to electric signal, and second low-noise amplifier carries out the signal filtered out secondary
Amplification.
Preferably, the video filtering circuit includes intermediate-frequency filter, inductance L05, L06, capacitor C26 and low noise
Acoustical power pipe, the inductance L05 and L06 connect with the input terminal of intermediate-frequency filter respectively, and the capacitor C26 mono- terminates inductance
Between L05 and inductance L06, the capacitor C26 other end is grounded, the low noise power tube base stage and intermediate-frequency filter output end
Connection, the low noise power pipe collector amplify output end as signal, and the intermediate-frequency filter will have vision signal
Intermediate-freuqncy signal is filtered out and is exported to low noise power tube base stage.
Preferably, the audio filter circuit includes left channel filter and right channel filter, the left sound
Channel filter screens left channel audio signal, and the right channel filter screens right channel audio signal.
Preferably, including main control circuit, the main control circuit are electrically connected with demodulator circuit, the demodulation electricity
Road exports the strength signal of audio-video signal to main control circuit, and the main control circuit controls demodulation electricity according to strength signal
The working frequency on road, so that the strongest working frequency of demodulator circuit selection signal.
The beneficial effect of 5.8G simulation WirelessHD audio-video receiving module disclosed by the utility model is: receiving circuit and connects
Radio reception vision signal, and audio-video signal is exported to demodulator circuit.Audio filter circuit filters out audio signal, video filter
Wave circuit filters out vision signal, and demodulator circuit carries out demodulation reduction to audio signal and vision signal respectively and exports to outer
Equipment is connect, the vision signal after demodulation is converted to the high-definition video signal of high-definition format and exported to external by high definition conversion circuit
Equipment.The high-definition video signal of high-definition format can meet the needs of HD video, while receiving end does not need to count signal
Mould conversion, signal transmission delay is small, meets the delay requirement of real-time Transmission.
Detailed description of the invention
Fig. 1 is the reception circuit circuit diagram of the utility model 5.8G simulation WirelessHD audio-video receiving module.
Fig. 2 is the circuit diagram of the utility model 5.8G simulation WirelessHD audio-video receiving module
Fig. 3 is the video filtering circuit diagram of the utility model 5.8G simulation WirelessHD audio-video receiving module.
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, it includes receiving circuit, demodulation electricity that 5.8G, which simulates WirelessHD audio-video receiving module,
Road, video filtering circuit, audio filter circuit, video buffer circuit, high definition conversion circuit, main control circuit and power circuit.
Receiving circuit includes antenna ANT, the first bandpass filter F1, the first low-noise amplifier Q1, the second bandpass filtering
Device F2 and the second low-noise amplifier Q2.Audio-video wireless signal is switched to audio-video electric signal, the first bandpass filtering by antenna ANT
Device F1 by audio-video electric signal have audio-video signal screening go out, the first low-noise amplifier Q1 by the signal filtered out into
Row amplification.Second bandpass filter F2 carries out postsearch screening to audio-video electric signal, and the second low-noise amplifier Q2 is to filtering out
Signal carry out it is secondary amplification and export to demodulator circuit.The wherein center of the first bandpass filter and the second bandpass filter frequency
Rate is 5.8GHZ, the first low-noise amplifier and the second low-noise amplifier model BFP740.Bandpass filtering and twice twice
Signal amplification, eliminates the interference in wireless signal, improves the transmission quality of wireless signal.
Demodulator circuit includes model RTC6715 chip U1.Chip U1 is integrated with the function such as phaselocked loop, local oscillator, mixing and frequency discrimination
Can, vision signal and audio signal can be demodulated respectively.Demodulator circuit exports audio-video signal to audio filtered electrical
Road.
Audio filter circuit includes left channel filter F5 and right channel filter F4.Left channel filter F5 screens left sound
Audio channel signal, right channel filter F4 screen right channel audio signal.Audio signal is filtered out, and is exported electric to demodulating
Road, demodulator circuit carry out demodulation reduction to audio signal and export to external interface.Wherein left channel filter is bandpass filtering
Device, centre frequency 6.5MHZ, wherein right channel filter is bandpass filter, centre frequency 6.0MHZ.Demodulation chip point
It is other that demodulation of frequency discriminator is carried out to left channel audio signal and right channel audio signal, restore left channel audio signal and right audio channel
Signal.
Audio-video signal is mixed by demodulator circuit, generates the intermediate-freuqncy signal of 480MHZ, and is exported to video filtering electricity
Road.
Video filtering circuit includes intermediate-frequency filter F3, filter inductance L05, L06, filter capacitor C26 and low noise acoustical power
Pipe Q5.Inductance L05 and L06 connect with the input terminal of intermediate-frequency filter F3 respectively.Capacitor C26 mono- terminates inductance L05 and inductance L06
Between, capacitor C26 other end ground connection.Low noise power tube Q5 base stage is connect with intermediate-frequency filter output end, low noise power tube
Q5 collector as signal amplify output end, intermediate-frequency filter F3 by with vision signal intermediate-freuqncy signal filter out and export to
Low noise power tube Q5 base stage.Wherein, intermediate-frequency filter is SAW broadband band-pass filter, centre frequency 480MHZ.Intermediate frequency filter
Wave device filters out the vision signal in audio-video signal, and exports to demodulator circuit.Demodulator circuit solves vision signal
It adjusts and restores and export to video buffer circuit.
Video buffer circuit includes model MAX4090 chip U4.Chip U4 receives vision signal, exports after being cached
To high definition conversion circuit.
High definition conversion circuit includes model VC1588 chip U9.Vision signal is converted to the high definition of high-definition format by chip U9
Vision signal simultaneously exports.The high-definition video signal of high-definition format can meet the needs of HD video, while receiving end does not need pair
Signal carries out digital-to-analogue conversion, and signal transmission delay is small, meets the delay requirement of real-time Transmission.
Main control circuit includes model STM8S003FU6 chip U3.Main control circuit is electrically connected with demodulator circuit.Demodulation electricity
Road exports the strength signal of audio-video signal to main control circuit, and main control circuit controls demodulator circuit according to strength signal
Working frequency, so that the strongest working frequency of demodulator circuit selection signal.Wherein, it is divided into 20MHZ between each frequency, modulates band
Wide 12MHZ, so high resolution audio and video signal can be transmitted.
Power circuit includes model RT9167A-33 chip U2.Chip U2 is used to external voltage being converted to 3.3V voltage,
3.3V voltage is used for the power supply of entire circuit.
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 (7)
1. a kind of 5.8G simulates WirelessHD audio-video receiving module, which is characterized in that including receiving circuit, demodulator circuit, view
Frequency filter circuit, audio filter circuit and high definition conversion circuit；
The reception circuit receives audio-video signal, and audio-video signal is exported to demodulator circuit, and the demodulator circuit is by sound
Vision signal is exported to audio filter circuit；
The audio filter circuit filters out the audio signal in audio-video signal, and exports to demodulator circuit, the demodulation
Circuit carries out demodulation reduction to audio signal and exports to external equipment；
Output is to video filtering circuit after audio-video signal is mixed by the demodulator circuit, and the video filtering circuit is by sound
Vision signal in vision signal filters out, and exports to demodulator circuit, and the demodulator circuit demodulate also to vision signal
To high definition conversion circuit, the vision signal after demodulation is converted to the high definition of high-definition format by the high definition conversion circuit for former and output
Vision signal is simultaneously exported to external equipment.
2. 5.8G as described in claim 1 simulates WirelessHD audio-video receiving module, which is characterized in that including video buffer
Circuit, the video buffer circuit receive the vision signal after demodulation, export after being cached to high definition conversion circuit.
3. 5.8G as described in claim 1 simulates WirelessHD audio-video receiving module, which is characterized in that the reception circuit
Including antenna, the first bandpass filter and the first low-noise amplifier, wireless signal is switched to electric signal by the antenna, and described
One bandpass filter filters out the audio-video signal in electric signal, first low-noise amplifier by the signal filtered out into
Row amplifies and exports to demodulator circuit.
4. 5.8G as claimed in claim 3 simulates WirelessHD audio-video receiving module, which is characterized in that the reception circuit
It further include the second bandpass filter and the second low-noise amplifier, second bandpass filter carries out secondary sieve to electric signal
Choosing, second low-noise amplifier carry out secondary amplification to the signal filtered out.
5. 5.8G as described in claim 1 simulates WirelessHD audio-video receiving module, which is characterized in that the video filtering
Circuit includes intermediate-frequency filter, inductance L05, L06, capacitor C26 and low noise power tube, and the inductance L05 and L06 is respectively in
The input terminal of frequency filter is connected, and the capacitor C26 mono- is terminated between inductance L05 and inductance L06, the capacitor C26 other end
Ground connection, the low noise power tube base stage are connect with intermediate-frequency filter output end, and the low noise power pipe collector is as letter
Intermediate-freuqncy signal with vision signal is filtered out and is exported to low noise power tube by number amplification output end, the intermediate-frequency filter
Base stage.
6. 5.8G as described in claim 1 simulates WirelessHD audio-video receiving module, which is characterized in that the audio filtering
Circuit includes left channel filter and right channel filter, and the left channel filter screens left channel audio signal, the right side
Vocal tract filter screens right channel audio signal.
7. 5.8G as described in claim 1 simulates WirelessHD audio-video receiving module, which is characterized in that including main control electricity
Road, the main control circuit are electrically connected with demodulator circuit, and the demodulator circuit exports the strength signal of audio-video signal to master
Control circuit, the main control circuit control the working frequency of demodulator circuit according to strength signal, so that demodulator circuit selection letter
Number strongest working frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249327.0U CN209218269U (en) | 2019-02-27 | 2019-02-27 | 5.8G simulates WirelessHD audio-video receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249327.0U CN209218269U (en) | 2019-02-27 | 2019-02-27 | 5.8G simulates WirelessHD audio-video receiving module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209218269U true CN209218269U (en) | 2019-08-06 |
Family
ID=67467968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920249327.0U Active CN209218269U (en) | 2019-02-27 | 2019-02-27 | 5.8G simulates WirelessHD audio-video receiving module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209218269U (en) |
-
2019
- 2019-02-27 CN CN201920249327.0U patent/CN209218269U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210693937U (en) | 5G indoor distribution system | |
| CN208112924U (en) | A kind of audio transmission system | |
| CN108988890A (en) | A kind of broadband wireless radio circuit based on AD9371 | |
| CN209218269U (en) | 5.8G simulates WirelessHD audio-video receiving module | |
| CN206728239U (en) | A kind of multi-functional noise reduction communication earphone | |
| CN209184609U (en) | Intermediate waves broadcast message remotely receives system | |
| CN204967801U (en) | Antenna circuitry and mobile terminal | |
| CN203933733U (en) | The interactive communication device of a kind of remote sound | |
| CN109525261A (en) | FM receives circuit | |
| CN201957185U (en) | Television integrated machine with Cable Modem function | |
| CN210839485U (en) | Gain-adjustable low-noise amplifier | |
| CN201957213U (en) | Device for multiplexing headphone cable as receiving antenna | |
| CN101783897A (en) | Television with camera and realization method thereof | |
| CN211406017U (en) | Radio frequency transceiver suitable for functional mobile phone | |
| CN210867600U (en) | Low-noise amplifier for ground signal transmission | |
| CN220067635U (en) | Distributed type sound amplifying wireless microphone | |
| CN102006345B (en) | Mobile phone device | |
| CN201393266Y (en) | Wireless image pickup device and mobile communication equipment adopting same | |
| CN216982098U (en) | Antenna switching circuit and wireless earphone audio frequency transmitting device | |
| CN209462367U (en) | A kind of 2.4GHZ simulation wireless receiving module | |
| CN204305357U (en) | A kind of LTE based on catv network registers one's residence the hardware structure of covering system | |
| CN201904766U (en) | Intermediate frequency selecting circuit with function of suppressing adjacent channel interference | |
| CN210867603U (en) | Low noise amplifier for frequency selection of full frequency band | |
| CN218734298U (en) | Millimeter wave screen projection system and equipment based on Q-Band | |
| CN211481269U (en) | Frequency signal processing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |