Light propagation communication system for television media

Abstract

The invention provides a light propagation communication system for television media. The light propagation communication system for the television media comprises a transmitting terminal and a receiving terminal, wherein the transmitting terminal comprises a converter, a clock, a data recovery circuit and an LED array, wherein the converter is used for converting communication signals to current pulses, the clock and the data recovery circuit are connected with the converter, and the LED array is connected with the clock and the data recovery circuit and emits light according to the received current pulses. The receiving terminal comprises a photodiode, a clock, a data recovery circuit and a decoder, wherein the clock and the data recovery circuit are connected with the photodiode, and the decoder is connected with the clock and the data recovery circuit. The light propagation communication system has the advantages that through visible light transmission information, different from wireless communication, visible light communication depends on light signals of visible light for transmission, and electromagnetic radiation cannot be generated; different from optical fiber communication, visible light communication is independent of any transmission medium; visible light communication is achieved through free transmission of light in an open space environment, and a certain lighting function can be achieved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a light propagation communication system used for television media. Background technique [0002] In the traditional communication field, the communication methods are as follows: [0003] 1) Wired communication, connecting the sending end and the receiving end with a cable, and sending information from the sending end to the receiving end through electrical signals. [0004] 2) In wireless communication, information is loaded on a high-frequency signal at the sending end, and radiated to space through the antenna, and the receiving end receives the signal radiated from time to time, demodulates it and restores it to useful original information. [0005] 3) Optical fiber communication, connect the sending end and the receiving end with optical fiber, modulate the information into an optical signal at the sending end, send the optical information to the receiving end throug...

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Problems solved by technology

[0006] The above-mentioned transmission methods have great limitations. The first one has high cost and higher maintenance cost. The second one has lower cost, but the signal is transmitted by radiation, which brings unnecessary electromagnetic interference. Pollution, excessive electromagnetic radiation is harmful to the human body

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