Error encoding system for sequentially indicating errors in transfer of digital information

Claim 1

APPARATUS FOR HANDLING ERRORS INCURRED DURING THE TRANSFER OF DATA UNITS FROM AN EXTERNAL SOURCE TO A STORAGE MEDIUM FOR SUBSEQUENT READOUT FROM THE LATTER, COMPRISING A FLIP-FLOP CIRCUIT ADAPTED TO SWITCH STABLE STATES ONLY IN SYNCHRONISM WITH PERIODICALLY OCCURRING TIMING PULSES, MEANS FOR DERIVING ASSERTIVE AND NEGATIVE ERROR SIGNALS RESPECTIVELY IN ACCORDANCE WITH THE TRANSFER OF EACH DATA UNIT, MEANS FOR DERIVING PULSES FOR SAMPLING SAID LAST-RECITED SIGNALS DURING PREDETERMINED TIME INTERVALS, MEANS FOR GATING SAID NEGATIVE ERROR SIGNALS AND SAID SAMPLING PULSES TO THE INPUT OF SAID FLIP-FLOP CIRCUIT TO SWITCH THE STABLE STATE OF THE LATTER UPON THE ARRIVAL OF THE NEXT OCCURRING ONE OF SAID TIMING PULSES, MEANS OPERATIVE ONLY OUTSIDE SAID PREDETERMINED TIME INTERVALS FOR REGENERATIVELY GATING THE OUTPUT SIGNAL OF SAID FLIPFLOP CIRCUIT BACK TO ITS INPUT TO MAINTAIN SAID FLIP-FLOP CIRCUIT IN ITS LEAST STABLE STATE DURING SUBSEQUENTLY OCCURRING TIMING PULSES, MEANS FOR GATING ASSERTIVE ERROR SIGNALS TO SAID FLIP-FLOP CIRCUIT TO MAINTAIN THE LATTER IN ITS LAST STABLE STATE UPON THE ARRIVAL OF TIMING PULSES DURING ONE OF SAID PREDETERMINED TIME INTERVALS, MEANS RESPONSIVE TO THE STATE OF SAID FLIP-FLOP CIRCUIT FOR GENERATING A CORRESPONDING MULTI-CHANNEL CONTROL SIGNAL, AND MEANS FOR WRITING SAID CONTROL SIGNAL ON SAID STORAGE MEDIUM IN ASSOCIATION WITH ITS CORRESPONDING DATA UNIT.