Patent ID: 6246276
Filing Date: 2001-06-12
Classification: H03K,H04L

Abstract:
An electronic circuit for processing a clock signal generated by a fixed oscillating source, the clock signal having potential jitter, temporary frequency drifts and missing clock pulses, the circuit comprising:a plurality of basic units provided in series, each basic unit having:a unit input for receiving the clock signal;a unit output for outputting the clock signal;unit circuitry having a plurality of delay elements serially connected between the unit input and the unit output for reducing jitter and temporary frequency drifts of the clock signal;a changed clock signal output for outputting a changed clock signal generated by the unit circuitry; anda missing clock pulse detection and substitution module having:a module input for receiving the changed clock signal from the unit output of each basic unit;module circuitry having a plurality of detecting circuits to detect a missing pulse in the changed clock signal received from each basic unit, and a routing circuit for routing the changed clock signal received from one of the basic units, the one of the basic units having no missing clock pulse; anda module output for outputting the changed clock signal routed by the module circuitry.