Apparatus and method for versatile digital communication

Abstract From the Canadian patent

A simple phase locked loop (PLL) operates over a broad continuous range of frequencies, a range much larger than one octave but requires only an octave VCO. The Q of the PLL is controlled to within a factor of two at every frequency on the broad continuous range. The PLL enables the invention of a clock recovery circuit that operates at any bit-rate on a broad, continuous range of bit-rates. The bit-rate independent clock recovered by the PLL has equivalent fitter performance at all bit-rates. The PLL may be used to provide 3R transponder/regenerators with read/write access to overhead data eye quality assessment, monitoring/identification of the bit-rate of the signal, and with bit-rate …