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. 13, 1976
Filed:
Jun. 11, 1974
Applicant:
Inventor:
Robert B McJohnson, Dallas, TX (US);
Assignee:
Recognition Equipment Incorporated, Irving, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; G06K / ;
U.S. Cl.
CPC ...
235 / ; 307268 ; 328150 ;
Abstract
Video signals generated by reading bar coded documents are transformed into pulses uniformly truncated in amplitude and having transitions only at points corresponding to change in sign of the slope of the adjusted video signals. The pulses are utilized to control the state of an output device depending upon whether the integral of any of the truncated pulses exceeds a reference level.