Patent ID: 8238506

Claim:
A phase-discriminating device, comprising: a phase-discriminating unit converting an input and a reference signals into an input and a reference sequences respectively by a one-bit A/D conversion operation, determining a first value A P , an in-phase component I P and a quadrature component Q P of the input signal in response to the input and the reference sequences, and producing an estimated phase of the input signal according to a relation among the first value A P , the in-phase component I P and a polarity of the quadrature component Q P , wherein the relation is defined by a first formula (sgn[Q P ]·(1−I P /A P )), the sgn[Q P ] denotes a polarity function, the estimated phase is proportional to the first formula (sgn[Q P ]·(1−I P /A P )) and the first value A P is a certain integer being one of: a first integer being a sample size of the one-bit A/D conversion operation for producing the input sequence; and a second integer being a summation of an absolute value of the in-phase component I P and an absolute value of the quadrature component Q P .