Short-distance video transmission system based on wireless transmission technology
A video transmission system and wireless transmission technology, applied in the field of short-distance video transmission systems, can solve the problems of insufficient transmission quality and rate of short-distance wireless video transmission, and achieve the effect of fast transmission rate, good transmission quality and clear video quality
Pending Publication Date: 2022-02-18
GUIZHOU UNIV OF ENG SCI
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Problems solved by technology
However, the current short-distance wireless video transmission is still insufficient in terms of transmission quality and rate.
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[0020] Such as Figure 1-2 As shown, the present invention provides a short-distance video transmission system based on wireless transmission technology, including a camera 1, a slave node 2, a master node 3 and a display terminal 4, and the slave node 2 includes a wireless transmission module 5 and a character superimposer 6, and the camera 1 Send the video signal to the character superimposer 6, the character superimposer 6 mixes character information into the video signal, and sends the processed signal data to the wireless transmitting module 5, the wireless transmitting module 5 includes a power supply part, an audio frequency conversion oscillation circuit And frequency mixing circuit, power supply part: AC 220V city power is generated by a transformer to generate an AC voltage of about 12V, rectified by a half-wave diode VD1, and then rectified and filtered to generate a DC voltage of about 12V to supply power to the power indicator VD3;
[0021] Audio frequency convers...
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The invention discloses a short-distance video transmission system based on a wireless transmission technology, which comprises a camera, a slave node, a master node and a display end, the slave node comprises a wireless transmitting module and a character superimposer, the camera sends a video signal to the character superimposer, the character superimposer mixes character information in the video signal and transmits the processed signal data to the wireless transmitting module, the wireless transmitting module comprises an audio frequency conversion oscillating circuit and a frequency mixing circuit, the main node comprises a wireless receiving module, and the wireless receiving module selects a full-channel tuner to receive the data transmitted by the wireless transmitting module and transmits the received data to the display end. A short-distance video signal wireless communication network is formed by the camera, a wireless transmission receiving and transmitting module and the character superimposer, the transmission of an analog video signal is completed, the operation is easy, the anti-interference capacity is high, and the video signal can be transmitted in real time.
Description
technical field [0001] The invention relates to the technical field of wireless transmission, in particular to a short-distance video transmission system based on wireless transmission technology. Background technique [0002] Short-distance wireless communication has the characteristics and advantages of low cost, low power consumption and peer-to-peer communication, and has been widely used in people's daily life, such as wireless smart home, wireless meter reading, wireless ordering, wireless data collection, wireless Device management and monitoring wireless reading of car instrument data, etc. [0003] With the wide application of wireless video transmission in the current society, wireless video transmission has higher and higher requirements on transmission quality and transmission rate. However, the current short-distance wireless video transmission is still insufficient in terms of transmission quality and rate. Contents of the invention [0004] The technical p...
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IPC IPC(8): H04N5/265H04N7/18H04W4/80
CPCH04N5/265H04N7/181H04W4/80
Inventor 王建卫吴炀炀李佐何启鹏
Owner GUIZHOU UNIV OF ENG SCI