Digital logic circuits for producing digital sum and difference

Details Digital logic circuits for producing digital sum and difference Digital logic circuits for producing digital sum and difference

1974-02-19

1976-03-09

Grimm, Siegfried H.

Registers

Coded record sensors

Particular sensor structure

2351503, 307215, 328157, 328160, G06G 716, H03K 520, H03K 706

Patent

active

039434540

ABSTRACT:
The present invention provides means for deriving a single frequency signal from logic signals A(t) and B(t) by first applying the logic signals to a combining arrangement, which includes logic circuits and can be built using only standard integrated circuit components, e.g., flip-flops, gates, and amplifiers. The output of the combining means is the sum and difference frequencies, in digital form, of the logic signals A(t) and B(t). The single frequency is selected from the frequencies present at the output of the combining means.

REFERENCES:
patent: 2848616 (1958-08-01), Tollefson
patent: 3309601 (1967-03-01), Dudley
patent: 3337814 (1967-08-01), Brase et al.
patent: 3671876 (1972-06-01), Oshiro

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