The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 1991
Filed:
Sep. 01, 1989
Michael E Moy, Lafayette, CO (US);
Storage Technology Corporation, Louisville, CO (US);
Abstract
The vision system illumination calibration apparatus uses a pair of lamps, located one on either side of a vision element to illuminate a set of machine-readable characters imprinted in bar code format on a label affixed to a calibration target plate. The required level of illumination is set by the use of a predetermined calibration target label. The vision system is positioned opposite this calibration target label and the illumination level is varied in sequential steps. Control software identifies a range of illumination levels in which the calibration target label is accurately read by the vision element and sets the level of illumination of the lamps in this range of values.