A method of communicating data by shifting the waveform’s period. Instead of being at the zero axis at a specific point in time, the wave might be shifted forward so that it is at its peak. The reader’s digital signal processor might interpret the out of phase signal as a one or zero.
Phase shift keying
A method of communicating data by shifting the waveform's period. Instead of being at the zero axis at a specific point in time, the wave might be shifted forward so that it is at its peak. The reader's digital signal processor might interpret the out of phase signal as a one or zero....