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:
Aug. 03, 1976
Filed:
Jul. 29, 1974
Arthur Walter, Denzlingen, DT;
Erwin Sick Optik-Elektronik, Waldkirch, DT;
Abstract
A reading device for optically detectable digital codes with two different light-reflecting types of fields. It comprises: a scanning beam arrangement having a timing raster with two different light-reflecting types of serially-numbered fields, means for conducting part of the scanning beam via said timing raster and the rest onto the code fields, a timing signal photoelectric cell receiving the light reflected back by the timing raster, a coding signal photoelectric cell receiving the light reflected back from the code field, and an evaluation electronic system connected to the outputs of the photoelectric cells for determining the length of the code fields in units of the timing raster in the scanning direction. Each code field length is associated with a number of timing fields varying between two predetermined limits.