Time domain unit for processing a seismic signal

Claim 1

AN APPARATUS FOR PROCESSING A SEISMIC CARRIER SIGNAL WHICH HAS BEEN PULSE MODULATED WHICH COMPRISES: FIRST MEANS FOR GENERATING A QUANTITIZING OSCILLATING SIGNAL WHOSE FREQUENCY IS AT LEAST TWICE THE HIGHEST FREQUENCY OF THE OCCURRENCES OF THE PULSES IN THE CARRIER SIGNAL; SECOND MEANS CONNECTED TO SAID FIRST MEANS FOR COUNTING THE OSCILLATIONS FROM SAID FIRST MEANS OCCURRING DURING EACH PULSE WIDTH OF SAID CARRIER SIGNAL; THIRD MEANS CONNECTED TO SAID SECOND MEANS FOR HOLDING INFORMATION REPRESENTIVE OF THE NUMBER OF SAID OSCILLATIONS GENERATED DURING A PULSE WIDTH OF SAID CARRIER SIGNAL OBTAINED FROM A PLURALITY OF ADJACENT PULSES OVER EQUAL BUT DISPLACED TIME INCREMENTS; FOURTH MEANS FOR REPETITIVELY RECOVERING THE TOTAL INFORMATION STORED BY SAID THIRD MEANS AS A DELAYED SIGNAL; FIFTH MEANS FOR PEPETITIVELY GENERATING A WEIGHTING FUNCTION SIGNAL CONCURRENTLY WITH RECOVERY OF INFORMATION BY SAID FOURTH MEANS;