An anti-interference wireless video transmission method based on 2.4 G wireless technology, and system thereof

A wireless video and wireless technology technology, applied in the direction of closed-circuit television system, etc., can solve the problems of poor diffraction effect, easy to be affected by external signals, poor anti-interference ability, etc., achieve fast transmission speed, solve transmission speed and transmission stability The effect of strong resistance and diffraction ability

Inactive Publication Date: 2019-01-08
广东九安智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But its shortcomings are obvious, the diffraction effect is poor, it is easily affected by external signals, and the anti-interference ability is poor.

Method used

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  • An anti-interference wireless video transmission method based on 2.4 G wireless technology, and system thereof
  • An anti-interference wireless video transmission method based on 2.4 G wireless technology, and system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] see figure 1 , an anti-jamming wireless video transmission method based on 2.4G wireless technology, the method involves a plurality of wireless video monitoring devices and hosts, and both the wireless video monitoring devices and the host are used to transmit 500M-1G frequency band signals and 2.4 A frequency conversion device for converting G-band signals;

[0024] The method is specifically as follows: Step 1: The wireless video monitoring device transmits the collected video data to the wifi device, and converts the 2.4G frequency band signal of the wifi device into a wireless signal of the 500M-1G frequency band through the frequency conversion device and sends it to the space ; The frequency of the 500M-1G frequency band signal includes 700MHz, 800MHz, and 900MHz, mainly the ISM frequency band used by 802.11ah.

[0025] Step 2: The frequency conversion device on the host side converts the received 500M-1G frequency band wireless signal into a 2.4G frequency band...

Embodiment 2

[0029] refer to figure 2 , an anti-jamming wireless video transmission system based on 2.4G wireless technology, comprising a plurality of wireless video monitoring devices 1 and a host 4, and a frequency conversion device 2 is arranged between the wireless video monitoring devices 1 and the host 4;

[0030] The wireless video monitoring device 1 transmits the collected video data to the wifi device 3, and converts the 2.4G frequency band signal of the wifi device 3 into a wireless signal of the 500M-1G frequency band through the frequency conversion device 2 and sends it to the space;

[0031] The frequency conversion device 2 is used for conducting RF signals with the wifi device 3, converting 2.4G frequency band signals and 500M-1G frequency band signals, receiving 500M-1G frequency band signals in space or sending 500M-1G frequency band signals into space;

[0032] The host 4 is used to receive and process the video data transmitted from the wifi device 3 and store and s...

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Abstract

The invention belongs to the field of wireless video monitoring, in particular to an anti-interference wireless video transmission method based on 2.4 G wireless technology, which relates to a plurality of wireless video monitoring devices and a wireless video recording host (hereinafter referred to as the host), wherein the wireless video monitoring device and the host are provided with frequencyconversion devices for converting a 500M-1G frequency band signal and a 2.4G frequency band signal. The method comprises thes tepsof Step 1: transmitting the collected video data to the wifi device by the wireless video monitoring device, and converting the 2.4 G frequency band signal to the 500M-1G frequency band wireless signal through the frequency conversion device for transmitting into space; Step 2: converting the 500M-1G frequency band wireless signal to 2.4G frequency band signal by the frequency conversion device at the host and then transmitting a wifi device; Step 3: transmitting the received video data to the host system for processing by the wifi device. The invention provides an anti-interference wireless video transmission method and system based on 2.4 G wireless technology, which has the advantages of high transmission speed, strong anti-interference ability and good diffraction ability.

Description

technical field [0001] The invention relates to the field of wireless video monitoring, in particular to an anti-interference wireless video transmission method and system based on 2.4G wireless technology. Background technique [0002] 2.4G wifi is a kind of wireless technology. Because its frequency band is between 2.400GHz and 2.4835GHz, it is called 2.4G wireless technology for short; it has low voltage, high efficiency, low cost, two-way high-speed data External large antenna), with fast frequency hopping, forward error correction, calibration and other functions, are widely used in the world. [0003] However, its shortcomings are obvious, such as poor diffraction effect, easy to be affected by external signals, and poor anti-interference ability. [0004] In the field of wireless video surveillance, especially in the case of concentrated wireless signal receiving and transmitting devices, complex environment, and many obstacles, video signals are prone to loss and ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18
CPCH04N7/18
Inventor 肖军
Owner 广东九安智能科技股份有限公司
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