Manchester code decoding method and system

Abstract

The invention provides a Manchester code decoding method and system. The method comprises the following steps of filtering Manchester codes, thereby removing high frequency and low frequency noises; carrying out waveform inversion on the filtered Manchester codes; converting the waveform inverted Manchester codes into 4-20mA current signals; coupling the converted Manchester codes; and decoding the coupled Manchester codes through adoption of a microcontroller. According to the Manchester code decoding method and system provided by the invention, the waveform inversion is carried out on the Manchester codes and then the Manchester codes are decoded through adoption of the microcontroller, so the Manchester code decoding efficiency and accuracy are improved.

Description

technical field [0001] The invention relates to a digital decoding method, in particular to a Manchester code decoding method and system. Background technique [0002] Manchester Encoding, also called Phase Encode (PE), is a synchronous clock encoding technique used by the physical layer to encode the clock and data of a synchronous bit stream. The application of Manchester code in the Ethernet media system belongs to the self-synchronization method in the two bit synchronization methods in data communication, that is, the receiver uses a special code containing a synchronization signal to extract the synchronization signal from the signal itself to lock its own clock pulse frequency , so as to achieve the purpose of synchronization. [0003] Specifically, the Manchester code is often used in LAN transmission, which includes clock and data in the data stream, and transmits the clock synchronization signal to the other party while transmitting the code information. There is...

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Problems solved by technology

Therefore, for the receiving end that does not use this type of encoder, it cannot be decoded with this type of decoder alone, resulting in poor versatility

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