Patent ID: 7062164
Filing Date: 2006-06-13
Classification: H04B

Abstract:
1. A data rate detector, comprising: an input interface to receive a digital signal having a data rate that is one of N known data rates; a passing frequency-selective filter assembly coupled to the input interface and including N−1 bandpass filters, each bandpass filter corresponding to a different one of the N known data rates; and each bandpass filter configured to pass a signal when a selected spectral power difference exists at the bandpass frequency between the data rate of the digital signal and a selected one of the other N known data rates; and N−1 signal detectors each coupled to a corresponding one of the N−1 bandpass filters; and each signal detector configured to detect the passed signal from the corresponding bandpass filter and each signal detector configured to output a data rate signal related to the passed signal; and wherein each bandpass filter includes a reference clock coupled thereto.