Automatic phasing apparatus for synchronizing digital data and timing signals

Claim 1

An automatic phasing apparatus for establishing a fixed phase relationship between an incoming digital data signal and a first and a second input timing signal which signals as received have an arbitrary but fixed phase relationship therebetween, comprising: first means responsive to said first input timing signal for generating a synchronized timing signal having a greater repetition rate than said first input timing signal, timing generator means having a first input responsive to said data signal and a second input responsive to said synchronized timing signal to provide at an output, thereof, first and second pulse signals with said first pulse signal indicative of a first given delay between a given transition of said data signal and said synchronized timing signal, and with said second pulse signal indicative of a second given delay, between said data and said synchronized timing signal sampling means responsive to said first and second pulse signals for sampling said second input timing signal within a single cycle according to said given delays to provide at an output a logic signal indicative of a transition of said second input timing signal which is farthest delayed in time from said given transition of said data signal and output generating means responsive to said logic signal and said data signal to provide a regenerated data signal always having a fixed phase relationship to said first and second input timing signals.