Patent ID: 8804397

Claim:
A circuit, comprising: a first injection-locked oscillator (ILO) to generate a first output signal based on an input signal, wherein the first ILO has a first free-running frequency that is capable of being adjusted based on a first control signal, wherein the first ILO has multiple phase tuning ranges capable of being selected based on a first select signal; a second ILO to generate a second output signal based on the input signal, wherein the second ILO has a second free-running frequency that is capable of being adjusted based on a second control signal, wherein the second ILO has multiple phase tuning ranges capable of being selected based on a second select signal; and circuitry to detect a phase boundary between two adjacent phase tuning ranges using the first and the second output signals, and generate the first and the second control signals, and the first and the second select signals.