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Character Recognition Method Employing Two Level Decision Process

IP.com Disclosure Number: IPCOM000095292D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Liu, CN: AUTHOR [+3]

Abstract

This character recognition method identifies unknown characters by a two-step comparison process. During the first step the unknown character is applied to one input of compare unit 5. A group of references 7A... 7N are applied to the remaining inputs of compare 5. The references 7A... 7N are selected so that they represent average references for different type styles of characters A... N.

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Character Recognition Method Employing Two Level Decision Process

This character recognition method identifies unknown characters by a two- step comparison process. During the first step the unknown character is applied to one input of compare unit 5. A group of references 7A... 7N are applied to the remaining inputs of compare 5. The references 7A... 7N are selected so that they represent average references for different type styles of characters A... N.

The references 7A... 7N are also selected so that any unknown character regardless of the type style compares favorably with the corresponding one of the references 7A... 7N, even though it also compares favorably with up to five other references 7A... 7N. In this case, compare 5 provides six outputs on a group of lines 9A... 9N which enable six of a group of gates 11A... 11N.

The other inputs to gates 11A... 11N are connected to a group of reference storages 13a... 13n. The references 13a... 13n each store a group of references corresponding to each type style of a member of characters A... N. In operation, six of the references 13a... 13n are passed through gates 11A... 11N to a compare 15 where individual comparisons are made with the unknown character. An indicator 17 displays the alphabetic identity of the unknown character.

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