Patent ID: 8504867

Claim:
An apparatus for generating pulses of a third pulse sequence in response to pulses of a periodic first pulse sequence having a period T P , wherein timing of each pulse of the third pulse sequence is adjustable with a resolution that is smaller than period T P , the apparatus comprising: a first circuit for generating each pulse of a second pulse sequence in response to a separate pulse of the first pulse sequence with a first delay adjustable by first control data with a resolution of T P /N over a first range substantially wider than T P /M, wherein M and N are differing integers greater than one; a second circuit for generating each pulse of the third pulse sequence in response to a separate pulse of the second pulse sequence with a delay adjustable by a second control data with a resolution of T P /M over a second range substantially wider than T P /N; a programmable sequencer for varying the first control data and the second control data in response to a pulse of the first pulse sequence; and wherein the first circuit and the second circuit each comprise a respective phase-lock controller circuit that uses the first pulse sequence as a phase reference to provide a self-calibrating delay resolution.