Browse Prior Art Database

Dynamic Alphanumeric Handprinting Recognition System

IP.com Disclosure Number: IPCOM000093759D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 3 page(s) / 94K

Publishing Venue

IBM

Related People

Wilner, B: AUTHOR

Abstract

This relates to a unique code for dynamic alphanumeric handprinting recognition plus a means for implementing it. On-line or dynamic character recognition differs from static character recognition in that it yields significant information as to the sequence of positions drawn plus stylus lift offs or strokes.

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Dynamic Alphanumeric Handprinting Recognition System

This relates to a unique code for dynamic alphanumeric handprinting recognition plus a means for implementing it. On-line or dynamic character recognition differs from static character recognition in that it yields significant information as to the sequence of positions drawn plus stylus lift offs or strokes.

Drawing 1 shows the constraint areas 1, 2, and 3 in which an alphanumeric character is to be drawn. The following table lists at least one unique pattern sequence for each character. * indicates pen lift.

There are many other pattern sequences which can be used to recognize characters and will maintain their uniqueness. Normal printing techniques, however, yield very few variations on the above pattern area, approximately 5 variations per character.

A method of implementing the transducer is shown in drawing 2. The voltage plane is conductive on both sides and carries an electrical potential. As a character is drawn, stylus pressure causes a signal to appear at one of the subplane outputs and the top plane. The sequences of positions plus stylus lifts can be transmitted directly on-line either to a computer as input to a recognition program or to special hardware for character recognition.

A system is shown in drawing 3 employing the transducer of drawing 2. By this system, a continuous form sheet can be used to enter characters to a computer without having to separately enter an End of Character code, wit...