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. 13, 1981
Filed:
May. 21, 1979
Applicant:
Inventors:
Fredy E Graf, San Diego, CA (US);
William M Mahler, San Diego, CA (US);
Howard J Malan, San Diego, CA (US);
Assignee:
General Atomic Company, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
250569 ; 235460 ;
Abstract
An improved optical card reader is disclosed which is adapted for use with processing means for providing on-the-fly decoding of multibit data words from a card that is inserted therein. The card reader has two sets of light emitting means and two sets of light detecting means and the light detecting means are interconnected to provide a single set of outputs to comparators which measure the signal levels and provide distinct digital outputs. Selective energization of the light emitting means provides effective multiplexing of two multibit data words from a single set of outputs.