READER FOR ELECTRO-OPTICALLY READING DISPLAY SYMBOL THROUGH VERTICAL WINDOW AT WHICH FULL COVERAGE, OMNI-DIRECTIONAL SCAN PATTERN IS GENERATED

摘要

PROBLEM TO BE SOLVED: To generate an omni-directional scan pattern having high scan line density without dead zones, especially in the upper part and the lower part of a vertical window.

SOLUTION: A vertical slot scanner generates a full coverage scan pattern for reading symbols presented or moved over a vertical window. Scan lines are generated in upper and lower central regions of the window to improve scanner productivity.

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