Process for transmitting signals between two elements and device

Details Process for transmitting signals between two elements and device Process for transmitting signals between two elements and device

1988-01-26

1990-06-19

Lall, Parshotam S.

Communications: electrical

Continuously variable indicating

Using a particular modulation

340445, 340448, 34087031, 34087037, 731465, G08C 1922

Patent

active

049357387

ABSTRACT:
A method and apparatus are provided wherein there is associated with each value of a measurement of a parameter such as pressure, for transmission through an electromagnetic coupling device, a time duration or period which is a function of the measured value. A first, start signal of relatively short duration is transmitted and thereafter, at the end of a period which is a function of the parameter, a second, ending signal of relatively short duration is transmitted. A receiving device which is responsive to said signals, measures the elapsed time between them, i.e., measures the length of the intervening period, and converts this measurement into a measure of the parameter.

REFERENCES:
patent: 3303701 (1967-02-01), Matsuura et al.
patent: 4242666 (1980-12-01), Reschovsky et al.
patent: 4737761 (1988-04-01), Dosjoub et al.

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