Data circuit for multiplying digital data with analog

Details Data circuit for multiplying digital data with analog Data circuit for multiplying digital data with analog

1993-11-29

1994-11-01

Mai, Tan V.

Boots, shoes, and leggings

G06J 100

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active

053612191

ABSTRACT:
A multiplication circuit for directly multiplying analog and digital data without converting the analog data into digital data or the digital data into analog data. The multiplication circuit controls an analog input voltage by the use of a switching signal of a digital voltage so as to generate an analog output or to cut-off the output. Digital input signals b.sub.0 to b.sub.7 corresponding to a plural number of bits are integrated and given corresponding weights by use of a capacitive coupling unit, and a sign bit is added by the capacitive coupling unit by giving the sign bit double the weight of the most significant bit of the digital input.

REFERENCES:
patent: 4422155 (1983-12-01), Amir et al.
patent: 4458324 (1984-07-01), Burke et al.
patent: 4470126 (1984-09-01), Haque
patent: 4475170 (1984-10-01), Haque
Iwai, "The Beginning of Logical Circuit", The Electrical Engineering Handbook, 1980, pp. 144-146.
Miyazaki, "The Analog Usage Handbook", CQ Suppan kabushikigaisha, 1992, pp. 139-140.
"The Electrical Engineering Handbook", Richard C. Dorf, Editor-in-Chief, 1993, pp. 1861-1865.

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