Signal frequency divider with dual phase-displaced signal output

Claim 1

Digital frequency dividing apparatus for deriving two output signal having fixed phase relationships with each other and a constant frequency ratio with respect to an input signal, said apparatus comprising: a. an input terminal for connection with said input signal; b. a plurality of digital counters operatively connected in series to each other and to said input terminal for producing a first intermediate signal reduced in frequency by a fixed amount from said input signal; c. compensating means operatively connected to the last of said digital counters for fUrther reducing the frequency of said first intermediate signal from said plurality of counters and for producing a symmetrical square wave second intermediate signal; d. first bi-stable flip-flop means operatively connected to said compensating means for triggering on transitions of said second intermediate signal from a first condition to a second condition and for providing a first output signal having onehalf the frequency of said second intermediate signal; e. delay means operatively connected to said compensating means for producing a slightly time-delayed second intermediate signal; and f. second bi-stable flip-flop means operatively connected to said first flip-flop means and to said delay means for triggering on transitions of said delayed second intermediate signal corresponding to transitions of said second intermediate signal from said second condition to said first condition and for producing a second output signal also having one-half the frequency of said second intermediate signal and lagging in phase with respect to said first output signal.