Browse Prior Art Database

Character Feature Preprocessor

IP.com Disclosure Number: IPCOM000093669D
Original Publication Date: 1966-Jan-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Simek, JG: AUTHOR [+2]

Abstract

The drawing shows a schematic representation of a handwriting reader comprising a write-in matrix 1. The latter includes a plurality of horizontal electrical conductors 5 and a plurality of vertical electrical conductors 7. Conductors 5 and 7 are arranged in rectangular coordinate form and have a number and spacing to provide the required degree of resolution in accordance with the size of the characters to be written.

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Character Feature Preprocessor

The drawing shows a schematic representation of a handwriting reader comprising a write-in matrix 1. The latter includes a plurality of horizontal electrical conductors 5 and a plurality of vertical electrical conductors 7. Conductors 5 and 7 are arranged in rectangular coordinate form and have a number and spacing to provide the required degree of resolution in accordance with the size of the characters to be written.

Movement of a stylus or other writing instrument on matrix 1 to form a handwritten character causes signals to be provided in sequence. The signals are applied to horizontal digital register 11 and vertical digital register 13. From registers 11 and 13, the signals are supplied to digital-to-analog converters 15 and 17 where the coordinate locations of the handwritten characters are converted to horizontal and vertical, or x and y, analog signals.

These analog signals are then analyzed by conventional differentiating circuits for direction of movement as, for example vertical, horizontal, diagonal, and curved, in various directions. The signals are decoded to indicate the value of the character which is written on matrix 1.

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