Phase control device

DETAILED DESCRIPTION Accordingly, an object of this invention is to provide a phase control device which produces a plurality of pulse trains of a predetermined frequency and displaces each of said plurality of pulse trains by desired phase amounts with respect to the others.
Another object of the invention is to provide a phase control device for producing a reference pulse train of a frequency and a plurality of pulse trains of the same frequency and displacing the pulse trains by desired phase amounts with respect to the reference pulse train.
Another object of the invention is to provide a phase control device for producing a reference pulse train of a frequency and selectively producing one of groups of a plurality of pulse trains of the same frequency, with the phase difference of each of the pulse trains of each group relative to the reference pulse train being different from the phase difference of each of the pulse trains of another group relative to said reference pulse train.
Another object of the invention is to provide a phase control device for producing a reference pulse train of a frequency and a plurality of pulse trains of a different frequency and displacing the pulse trains by desired phase amounts with respect to the reference pulse train.
According to one aspect of the invention, the phase control device comprises a pulse signal generator for producing clock pulses with a pulse repetition period, storing means for storing numerical data, a plurality of presettable N-count counters for counting the clock pulses from said pulse signal generator, each one of the counters presetting therein the numerical datum supplied to the data input thereof from said storing means and producing an output pulse each time its count reaches N which N is an integer, and reading means for reading out a predetermined numerical datum to a corresponding presettable N-count counter.