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:
Oct. 11, 1977
Filed:
Jun. 25, 1976
James O Lafevers, Richardson, TX (US);
Charles T Kao, Richardson, TX (US);
Recognition Equipment Incorporated, Dallas, TX (US);
Abstract
CMC7 characters as coded by variations in spacing between vertical bars of magnetic material are automatically read as they pass a reading electron by separately sensing all magnetic materials in each of a multiplicity of side-by-side paths spanning the height of the characters and extending the length of the field on which the characters may appear to produce a like multiplicity of analog signals. Positive excursions of the signals above a predetermined amplitude level are summed as a first time amplitude function. Negative excursions of the signals above a predetermined level are summed as a second time amplitude function. A first train of pulses is generated, one pulse for each peak in the sum of the positive excursions. A second train of pulses is generated on pulse for each peak in the sum of the negative excursions. Signals are produced from the first and the second trains representative of leading and trailing edges of bars forming the character for identification of each character in dependence upon the bar spacings.