Encoded symbol reader with calculation of magnification

Details Encoded symbol reader with calculation of magnification Encoded symbol reader with calculation of magnification

1995-03-16

1996-09-24

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

382286, 382298, G06K 710

Patent

active

055593186

ABSTRACT:
An encoded symbol reader for reading two-dimensional encoded symbols which can calculate a magnification of an image of the two-dimensional symbol. The encoded symbol is comprised of a n.times.n matrix of cells. The encoded symbol reader senses an image formed by an optical system, and detect a size of the formed image. Then, a magnification of the image is calculated based on the size of the image, and a length of the cell of the encoded symbol and a number of the cells.

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patent: 5048106 (1991-09-01), Nakajima et al.
patent: 5189292 (1993-02-01), Batterman et al.
patent: 5288986 (1994-02-01), Pine et al.

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