Biphase Modulation

A form of modulation that, among other things, is used by the AES/ EBU interface and time code. In the bit stream, each bit shift is marked with a level shift (from high to low or vice versa). If the bit value is high, this is marked with a level shift in the middle of the bit concerned. Some of the advantages include the DC component in the signal is minimized and the signal is self-clocking.