Signal relay apparatus and method having frequency calibration mechanism

Abstract

The present invention discloses a signal relay apparatus having frequency calibration mechanism that includes a clock generation circuit, a frequency generation circuit, a clock measuring circuit, a frequency adjusting circuit and a transmission circuit. The clock generation circuit generates a source clock signal. The frequency generation circuit receives the source clock signal and generates a target frequency signal according to a conversion parameter. The clock measuring circuit measures a first frequency offset of a source frequency relative to a first predetermined frequency according to an external reference clock signal. The frequency adjusting circuit adjusts the conversion parameter according to the first frequency offset when the first frequency offset is not within a first predetermined range such that a second frequency offset of a target frequency relative to a second predetermined frequency is within a second predetermined range. The transmission circuit performs signal transmission according to the target frequency signal.

Dependencies are inferred from the claim text.