Method and arrangement for recovering an analogue signal

Details Method and arrangement for recovering an analogue signal Method and arrangement for recovering an analogue signal

1987-01-14

1988-03-01

Goldberg, E. A.

Boots, shoes, and leggings

364808, G06G 700

Patent

active

047291133

ABSTRACT:
A method and an arrangement for recovering an analog signal E(t) and for displaying and/or processing it, for example, on an oscilloscope as a useful recovered signal X(t), in the envelope display mode and/or in the signal display mode. In the method, the average values of the k results are determined which are obtained after multiplication of the analog signal E(t) by the function f.sub.k (t) chosen as a function of the passband of the analog signal E(t). These average values can also be obtained by means of a filter having a pulse response h.sub.k (t), where h.sub.k (t)=f.sub.k (.tau.-t). The filter has at its k outputs transmittances h.sub.k (t). These average values permit of calculating k coefficients S.sub.k, which serve to determine the calculated recovered signal S(t). The latter is then compared with the analog signal E(t), while on the basis of an error criterion, which may be the average quadratic error, the signal mode or envelope mode of the useful recovered signal X(t) is chosen, which choice may be automatic. The maximum (SUP) and minimum (INF) values of the analog signal E(t) are also determined. Special choices of functions f.sub.k (t) of the type f.sub.n (t)=n.multidot.(1-t).sup.n-1 permit of obtaining a simple experimental realization of the arrangement according to the invention used in an oscilloscope.

REFERENCES:
patent: 3996456 (1976-12-01), Hoover
patent: 4143365 (1979-03-01), Cayzac
patent: 4228423 (1980-10-01), Schwerdt
patent: 4308524 (1981-12-01), Harrison

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