Signal analysis

Claim 1

A signal-processing system including in combination: a cyclic recorder having a plurality of parallel record tracks with associated record and readback circuits and including signal-processing operations means effecting different time delays in the respective track circuits, a first set of said tracks constructed to record and reproduce signals in a substantially linear manner, a second set of said tracks having associated record/readback circuits for recording and reproducing signals as a succession of signal-state changes, timing means including frequency control means for generating timing signals of a predetermined frequency, timing recording means receiving said timing signals and recording same on a timing track in said cyclic recorder whenever any recording operations are performed in either of said sets of tracks, a signal analyzer responsive to the predetermined signal condition and supplying an event signal, readback coNtrol means effecting readback of said timing track for actuating said timing means to provide timing signals in accordance with the frequency reproduced from said timing track and further operative to effect selective readback of signals from any of said tracks in said sets and when so selecting, said readback control means including programmable timing delay means receiving said timing pulses from said timing means and supplying a synchronization signal delayed in accordance with the signal delay in the record/reproduce circuits of the track being read out, and utilization means jointly responsive to the signal being read from said track and to said delay synchronization signal to provide a real-time indication of said recorded signal.