Information signal transmitting system

Details Information signal transmitting system Information signal transmitting system

1974-07-10

1976-04-06

Britton, Howard W.

Telegraphy

Systems

Printing

178DIG15, 325 39, 325142, 325392, 343228, H04B 1100, H03K 708, H03B 318

Patent

active

039492974

ABSTRACT:
A system for transmitting information and accomplishing control including a transmitter and at least one receiver in which the transmitter produces an ultrasonic wave or an electrical signal and includes a circuit for modulating the ultrasonic wave or electrical signal as a function of a time interval indicative of the control signal. The modulation is varied as an exponential function so as to assure more accurate reception and decoding of the intelligence by the receiver.

REFERENCES:
patent: 3098212 (1963-07-01), Creamer, Jr.
patent: 3440353 (1969-04-01), Salmet
patent: 3475092 (1969-10-01), Harvey
patent: 3678392 (1972-07-01), Houghton
patent: 3705363 (1972-12-01), Okada et al.
patent: 3858116 (1974-12-01), Friedl et al.

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