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:
Mar. 30, 1976
Filed:
Aug. 09, 1974
Applicant:
Inventor:
Robert D Carlson, Danville, CA (US);
Assignee:
Drake Manufacturing Company, Harwood, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
235 / ; 235 / ; 250569 ;
Abstract
A card reader for reading a Hollerith coded card where the holes in the card are scanned by a single array of photo detectors as the card is withdrawn from a slot, and where an edge detector determines when the card is fully inserted into the slot so as to activate a scanner and signal a memory unit to accept data from the scanner, and where an error detector detects any improper scanning of the card by counting the number of rows scanned and prevents processing of incorrectly generated data.