Data processing unit and signal receiver including the data processing unit

摘要

The processing unit has clock and data recovery circuit. A processor circuit is connected to clock and data recovery circuit (16), such that processor circuit is arranged to calculate mean and variance overtime of numerical input signal of numerically controlled oscillator (25) so as to determine coherence of data signal if calculated mean and variance are below predefined coherence threshold. The reset of receiver is performed if calculated mean or variance of numerical input signal of numerically controlled oscillator is above predefined coherence threshold. An independent claim is included for signal receiver.