Optical mark reader

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9594937
APP PUB NO 20150248570A1
SERIAL NO

14630436

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Importance

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Abstract

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Each data point within a two-dimensional code can be represented by a distribution of spots. Each spot can be made small enough to be invisible to the human eye so that the two-dimensional code can be invisible on or within transparent or nontransparent materials. The spots can be spaced at a large distance to increase the signal-to-noise ratio for an optical code reader. A code reader can be adapted to read the spots and determine the data points.

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Patent Owner(s)

  • ELECTRO SCIENTIFIC INDUSTRIES, INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ball, Bruce W Ann Arbor, US 3 27
Johansen, Brian C Hillsboro, US 2 17
Kim, Kyung Young Portland, US 12 41
Redd, Justin D Portland, US 3 28

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