Patent ID: 7254205

Claim:
An apparatus comprising: first, second and third processing circuits, each operative to perform a sampling function on a corresponding one of a first version, a second version and a third version of a given signal, the processing circuits performing the sampling function utilizing at least one clock signal; a logic circuit coupled to outputs of each of the first, second and third processing circuits, and operative to generate a control signal indicative of the presence or absence of a desired relationship between the at least one clock signal and the first, second and third versions of the given signal; and a selection circuit having an input coupled to an output of the logic circuit, wherein the selection circuit is responsive to the control signal to alter a relationship between the at least one clock signal and the first, second and third versions of the given signal if the control signal indicates the absence of the desired relationship; wherein the logic circuit comprises a decision logic block for determining the presence or absence of the desired relationship, and a latch circuit which is set or reset when the decision logic block determines that the desired relationship is absent, and wherein the control signal corresponds to an output of the latch circuit.