Information transmission anti-backflow device

Abstract

The invention discloses an information transmission anti-backflow device, which comprises a transmitting end and a receiving end, and is characterized in that the transmitting end and the receiving end are connected for transmission through a filter module, and the transmitting end sequentially comprises a data acquisition module and a modulation module in a modulation-demodulation module. The receiving end sequentially comprises a demodulation module in the modulation-demodulation module, an acquisition result display module and a signal truncation module; and a test code generator and a noise generator are arranged between the filter module and a transmission path of the transmitting end. According to the information transmission anti-backflow device, the whole system is designed to be a one-way transmission system, so that rebound noise is reduced; and a windowing method is used for cutting off signals, leakage errors are reduced, a smooth window function is used for replacing a rectangular window function for cutting off signal samples, specific unequal weighting is carried out on the cut-off time sequence signals, sudden changes of the two ends of the cut-off waveform become smooth, the side lobe of a spectrum window is lowered, and therefore the signals are cut off.

Description

technical field [0001] The invention relates to the technical field of information transmission, in particular to an anti-reflux device for information transmission. Background technique [0002] Information transmission is to send commands or status information from one end to the other end through the channel, and be received by the other end. Includes sending and receiving. The transmission medium is divided into wired and wireless. The wired is a telephone line or a dedicated cable; the wireless is the use of radio, microwave and satellite technology. The information cannot be changed during transmission, nor can the information itself be sent or received. There must be a carrier, such as data, language, signal, etc., and there must be a common interpretation of the carrier in terms of transmission and reception. In the schematic diagram of a digital circuit, a digital signal propagates from one logic gate to another, and the signal is sent from the output end to the ...

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