Voltage interpolation in digital-to-analog signal conversion

Details Voltage interpolation in digital-to-analog signal conversion Voltage interpolation in digital-to-analog signal conversion

2006-12-27

2008-08-26

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

C341S144000, C341S145000, C341S153000, C341S154000

Reexamination Certificate

active

07417572

ABSTRACT:
A multiple-input follower amplifier is coupled through a configuration of switching devices to an upper reference voltage at a number of its inputs and to a lower reference voltage at the remaining number of its inputs to form a voltage interpolator. The output of the voltage interpolator is a voltage between the upper and lower reference voltages proportional to the number of inputs coupled to each reference voltage. The voltage interpolator may be constructed so that the interpolated voltage may be selected through a reduced number of signal lines, such as by a row/column selection scheme. A voltage reference circuit providing the upper and lower reference voltages may also implement a row/column selection mechanism, thereby allowing a decoding scheme common to both a voltage reference circuit and a voltage interpolator in a digital-to-analog converter.

REFERENCES:
patent: 5396245 (1995-03-01), Rempfer
patent: 5801655 (1998-09-01), Imamura
patent: 5859606 (1999-01-01), Schrader et al.
patent: 6326913 (2001-12-01), Chao et al.
patent: 6441763 (2002-08-01), Nakao
patent: 6707404 (2004-03-01), Yilmaz
patent: 7015847 (2006-03-01), McLachlan et al.

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