Importance

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Abstract

A method and system for combining multiple individual asynchronous data streams for simultaneous transmission in the analog domain via a single conductor or wireless transmission medium. In one embodiment, a carrier signal is modulated and demodulated on a half-cycle basis. Each half-cycle is amplitude modulated (i.e., multiplied) by a fixed value representative of the data to be encoded that is applied to the half-cycle at zero-crossing and is held steady for the duration of the half-cycle. In this manner, each half-cycle of a carrier signal is modulated to contain data. For purposes of redundancy or security, two or more half-cycles may be used to contain the data, but in each case, the modulation still occurs on a half-cycle basis.

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First Claim