Ultrasonic digital receiver

Details Ultrasonic digital receiver Ultrasonic digital receiver

1974-10-25

1976-03-09

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340171PF, H04Q 900

Patent

active

039434915

ABSTRACT:
A receiver of ultrasonic pulses having a known pulse width and at a known spacing includes a gate which is normally conditioned to accept the ultrasonic pulses. When the first pulse is received, however, the gate is opened thereafter only when subsequent pulses should be present and is closed when no pulses are expected. Such an arrangement prevents multipath signals being interpreted by the receiver as information.

REFERENCES:
patent: 3238503 (1966-03-01), Uitermark
patent: 3355709 (1967-11-01), Hanus
patent: 3465294 (1969-09-01), Carsello
patent: 3745530 (1973-07-01), Carman
patent: 3766523 (1973-10-01), Brocker

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