Digital-to-analog converter

Details Digital-to-analog converter Digital-to-analog converter

1997-04-01

1999-03-30

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341 76, H03M 166

Patent

active

058894845

ABSTRACT:
A D/A converter has a plurality of input terminals, a plurality of current switchers, an adder for adding together the output currents from the plurality of current switchers, and a current-to-voltage converter. The D/A converter receives, via its input terminals, digital sound signals modulated by the adaptive delta modulation method or the delta modulation method. Each of the current switchers outputs a predetermined current, and switches the direction of the current in accordance with the digital signal it receives via the input terminal. The output currents of all of the current switchers are first added together by the adder, and then converted into a voltage by the current-to-voltage converter.

REFERENCES:
patent: 5243347 (1993-09-01), Jackson et al.
patent: 5355134 (1994-10-01), Kasuga et al.
patent: 5394146 (1995-02-01), Arimoto

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