Manchester code sampling processing method and module, and Manchester code decoder

Abstract

Embodiments of the invention provide a Manchester code sampling processing method and module, and a Manchester code decoder which belong to the technical field of communication. The method includes the following steps: N time sampling is performed on a current half code element of a Manchester code at first clock frequency to obtain N sampling values of the current half code element, wherein the first clock frequency is N*2 times of transmission clock frequency of the Manchester code, N>1; and if more than half of the sampling values of the N sampling values are identical, it is determined that an effective value of the current half code element is the identical value. According to the method, multiple sampling processing is performed on the current half code element of the Manchester codeat the first clock frequency that is 2N times of the transmission clock frequency of the Manchester code to obtain the effective value with greater possibility of the current half code element, thereby effectively improving the reception correct rate of the Manchester code at a decoding terminal, and so, the decoding correct rate of the Manchester code at the decoding terminal is correspondinglyincreased.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technology, and in particular to a Manchester code sampling processing method, module and decoder. Background technique [0002] Manchester code, also known as Split Phase Code, belongs to the synchronous clock coding technology, and is often used by the physical layer to encode the clock and data of the synchronous bit stream. Manchester code encodes the binary data "0" and "1" through level transitions, that is, in one clock cycle, the level jumps from high to low to represent "0", and from low to high Indicates "1"; or the level jumps from high to low to represent "1", and from low to high to represent "0". [0003] Wherein, one level transition corresponds to one full symbol or two "half symbols" in the Manchester code. That is to say, one full symbol in the Manchester code includes two "half symbols", and the value of the half symbol is "0" or "1", and the half symbol ...

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Problems solved by technology

However, because the Manchester code will be affected by factors such as signal interference during transmission, sometimes it is easy to cause the level of a certain (some) half symbol to fluctuate in one clock cycle, which may cause the reception of the Manchester code at the decoding end. The correct rate is reduced, which in turn leads to a corresponding decrease in the decoding correct rate of Manchester code at the decoding end

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