Synchronization circuit capable of establishing synchronism even when a sampling rate is invariable

Abstract From the Canadian patent

In a synchronization circuit for use in demodulating an input signal carrying a transmission data signal at a symbol rate a sampling circuit samples the input signal at a predetermined sample rate which may be different from the symbol rate to, produce a sequence of sampled signals. The sampled signal sequence is interpolated by the use of an interpolator into first and second partial interpolated signals which have different phases from each other. The first and second partial interpolated signals are processed by a processing circuit to produce timing errors between the first partial interpolated signals and the sampled signal sequence. The processing circuit controls the phases of the …