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:
May. 03, 1994
Filed:
Jul. 28, 1993
William H Havens, Skaneateles, NY (US);
Charles M Hammond, Jr, Skaneateles, NY (US);
Andrew Longacre, Jr, Skaneateles, NY (US);
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Abstract
A scanner is provided for reading a target containing indicia, such as bar codes, which includes a means for directing the a light source so that it illuminates a target, a photodetector that generates an electrical signal indicative of the intensity of the detected light, a means for decoding the electrical signal to identify the presence of a target containing a region of relatively high reflectivity, and a means for modifying the level of illumination of the light source either from low to high upon recognition of said region of relatively high reflectivity or from high to low when some predetermined condition, such as the end of the indicia scan, or the passage of a time period without reading indicia, is met.