Browse Prior Art Database

Multi Channel Character Recognition System

IP.com Disclosure Number: IPCOM000095534D
Original Publication Date: 1964-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Berkon, GM: AUTHOR [+2]

Abstract

Characters are scanned by a multi-channel read head 10. The resultant signals are passed through cross-channel coupling, amplifying, and clipping circuits 12 to a plurality of quantizer latches 14. Scanning circuits 16 scan latches 14 to determine the black count of them by which ones are turned on, and when a count of two results, start a timer 18 which divides the scan time into seven time zones, G - A, horizontally.

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Multi Channel Character Recognition System

Characters are scanned by a multi-channel read head 10. The resultant signals are passed through cross-channel coupling, amplifying, and clipping circuits 12 to a plurality of quantizer latches 14. Scanning circuits 16 scan latches 14 to determine the black count of them by which ones are turned on, and when a count of two results, start a timer 18 which divides the scan time into seven time zones, G - A, horizontally.

The latches 14 are scanned in each of these time zones. The black count in each zone is applied to logic statements 20. These operate a distributor 22 in conjunction with a pulse generator 23 to distribute a number of merit points to merit counters 24 for each of the possible characters. The character merit counter having the highest value at the end of the character scan sets its character register 26 to determine the character being scanned. For example, at G time a count of six black channels would distribute five points to the zero and nine character merit counters.

Other counts in other time zones would contribute corresponding merit counts to different ones of the character merit counters. When the entire character is scanned, the highest merit count indicates the character scanned.

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