Bi-polar electronic signal converters with single polarity accur

Details Bi-polar electronic signal converters with single polarity accur Bi-polar electronic signal converters with single polarity accur

1980-09-15

1984-04-24

Miller, C. D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347NT, 340347C, 340347AD, 340347DA, 324130, H03K 1302

Patent

active

044451113

ABSTRACT:
Bi-polar electronic signal converters, such as analog-to-digital or digital-to-analog converters, with a single polarity accurate reference source are disclosed. In one polarity direction, the accurate reference source is used in a conventional manner to transform the signal to be converted from one form (e.g., analog) to the other form (e.g., digital). In the other polarity direction, an inaccurate reference source is used in a similar conventional manner to convert the signal from one form to the other form. Periodically, the accurate and the inaccurate reference sources are compared to determine a correction multiplier. The correction multiplier is used during conversions using the inaccurate reference source to compensate for the inaccuracy of the inaccurate reference source.

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Rullgard, "IBM Technical Disclosure Bulletin", vol. 10, No. 1, Jun. 1967, pp. 5-6.
Schulz, "IBM Technical Disclosure Bulletin", vol. 16, No. 1, Jun. 1973, pp. 137-138.

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