Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1983-08-05
1986-01-14
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307442, 307443, 3072191, 307526, 371 25, H03K 19003
Patent
active
045647747
ABSTRACT:
There is provided a logic device wherein an alternating input signal having a frequency which is one of two frequencies allotted to two input logical values, respectively, positive logic "1" and negative logic "0", is inputted to the device. An output logical value is decided depending on the determination which frequencies the input frequency coincides with or not, and an alternating output signal having a frequency which corresponds to the output logical value is delivered out of the device. The logic device, even when constituted with semiconductor elements, can have highly reliable fail-safe capability and can be reduced in size and weight.
REFERENCES:
patent: 3026482 (1962-03-01), Filipowsky
patent: 3044017 (1962-07-01), Lewis
patent: 3077564 (1963-02-01), Forrer
patent: 3183445 (1965-05-01), Sigel
patent: 3192484 (1965-06-01), Carroll
patent: 3654485 (1972-04-01), Lotz
patent: 4017801 (1977-04-01), Riedel
Akiyama Hiroyuki
Tashiro Korefumi
Hitachi , Ltd.
Hudspeth D. R.
Miller Stanley D.
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