Analog-to-digital converter having a gray code board with the le

Details Analog-to-digital converter having a gray code board with the le Analog-to-digital converter having a gray code board with the le

1987-12-31

1990-01-30

Shoop, Jr., William M.

Coded data generation or conversion

Digital pattern reading type converter

Brush and contacts or conductive pattern

341 1, H03M 122

Patent

active

048976482

ABSTRACT:
An analog-to-digital converter apparatus has a code board having at least three patterns disposed thereon. One of the patterns represents a least significant bit and is arranged at the center between the other patterns. A reading device is provided for reading the patterns on the code board and for outputting a digital signal corresponding to the patterns. By arranging the least significant pattern in the center, adjustments between the reading device and the code board are not critical, and reading accuracy is improved.

REFERENCES:
patent: 3003142 (1961-10-01), Wolinsky
patent: 3500382 (1970-03-01), Rochette
patent: 3902063 (1975-08-01), Oelsch et al.
patent: 4639108 (1987-01-01), Sakai et al.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. II-13 to II-16.

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