Digital signal detector

Details Digital signal detector Digital signal detector

1974-09-25

1976-09-21

Boudreau, Leo H.

Registers

Platform operated

Platform actuated traffic counters

235 92CC, 235 92TF, 235 92PC, 328111, H03K 520

Patent

active

039814408

ABSTRACT:
An apparatus is provided for detecting digital pulses or pulse intervals and any combination thereof. Logic means is provided wherein the complement of the interval to be measured is loaded into a digital counter, and certain states of this counter are decoded to set and reset, respectively, an in-bin flip-flop. Operation is initiated when a digital input is received. If the interval to be measured terminates while the in-bin flip-flop is set, an output is generated indicating that a "hit" has been scored and the parameters of the measurement can be read out. Code words stored in a memory provide the specific parameters of measurement, and particular portions of the code words are employed depending on the desired mode of operation. Each code word contains data corresponding to the interval to be measured, desired resolution, clock rate to be employed, end of cycle in cases where a pattern of pulses and intervals is to be detected, and an indication of whether a pulse or an interval between pulses is to be measured.

REFERENCES:
patent: 3581066 (1971-05-01), Maure et al.
patent: 3667054 (1972-05-01), Nelson
patent: 3714645 (1973-01-01), Sivertson, Jr.
patent: 3728635 (1973-04-01), Eisenberg
patent: 3790881 (1974-02-01), Smith
patent: 3840174 (1974-10-01), Craft

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