Patent ID: 8687679

Claim:
An apparatus for interfacing a modem to pulsed data communication, the apparatus comprising: a demodulator for receiving a sequence of first pulse signals, at least one first pulse signal of the sequence of first pulse signals being modulated with an input signal, wherein the demodulator comprises: a pulse regeneration module for recovering a pulse timing of the sequence of first pulse signals; and a pulse demodulation module for demodulating the sequence of first pulse signals to recover the input signal in synchronization with the pulse timing of the sequence of first pulse signals, wherein the input signal is modulated onto the at least one first pulse signal by phase-shift keying utilizing at least two phase components comprising a first phase component and a second phase component, and wherein the pulse regeneration module is adapted to generate the pulse timing of the sequence of first pulse signals in accordance with a summation of an absolute value of the first phase component and an absolute value of the second phase component.