Frequency multiplexed analog-digital conversion

Details Frequency multiplexed analog-digital conversion Frequency multiplexed analog-digital conversion

1991-12-23

1993-07-13

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Multiplex

341144, 341155, H03M 100

Patent

active

052277941

ABSTRACT:
A single analog-digital converter (either analog-to-digital or digital-to-analog) is employed to simultaneously digitize both an AC information signal and a low frequency or DC control signal. The separate signals are added prior to conversion and are separated according to their frequency after conversion. Thus, a DC control signal can be digitized without the need for a second converter and without substantially reducing the dynamic range available for converting the main information signal.

REFERENCES:
patent: 3999129 (1976-12-01), Kasson
patent: 4097860 (1978-06-01), Araseki et al.
patent: 4647968 (1987-03-01), Willis
patent: 4703340 (1987-10-01), Balaban et al.
patent: 5124707 (1992-06-01), Stove
patent: 5146223 (1992-09-01), Muto

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