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:
Nov. 19, 1979
International Business Machines Corporation, Armonk, NY (US);
Abstract
A device for optical character reading comprising an optical reading unit, a video detector, a segmenting unit, a video buffer, a recognition unit and a controlling micro computer. The computer controls the setting of the threshold value in the video detector, and calculates by means of profile data received from the segmenting unit coordinates for a starting point for recognizing a character in the recognition unit. A comparator in the recognition unit compares bit by bit mask bits from a read only storage with corresponding data bits from the video buffer and stores the result into a status register. A recognized character is transferred from the read only storage to a character register, the computer is interrupted and a character is transferred from the recognition unit to the computer. The video detector comprises selectively connectable and computer controlled attenuation resistors for setting up a threshold signal curve simulating the form for the video signal curve.