Communications: electrical – Continuously variable indicating – With meter reading
Patent
1986-05-22
1988-01-12
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
377 52, 328 75, H04Q 120, H04Q 139
Patent
active
047194618
ABSTRACT:
In an effort to reduce the number of "terminal legs" in highly integrated electronic circuits, two different kinds of coded signals are applied successively to the control terminals thereof, namely: binary coded signals applied in parallel and successive pulses. An evaluation is made only of pulses applied to selected terminals, and a different number of pulses is applied to the individual control terminals. The total number of pulses evaluated is counted in a counter. The counter outputs are decoded in a decoder. The binary coded signals also are decoded in a decoder, and the outputs of both decoders are combined in a selection logic so that both kinds of signals together define a control state. In this manner 3.sup.n different control states are obtained by a number n of control terminals.
REFERENCES:
patent: 4158767 (1979-06-01), Long
patent: 4543575 (1985-09-01), Liermann
Datenblatt der Fa. Intersil ICM 7226 A/B, 3/79, Firmendruckschrift der Fa. Spezial-Elektronik KG FU 7226 B (4) 80.
273 Schaltungen, Elektro-Verlag GmbH 4, Auflage, Beitrage 203, 212, 224, "Elektor", Sep. 1979, Seiten 930 bis 933.
Wilhelm Ruf Kg
Yusko Donald J.
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