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Character Identification Device

IP.com Disclosure Number: IPCOM000098388D
Original Publication Date: 1960-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Gaffney, JE: AUTHOR [+2]

Abstract

Characters traced by a stylus are identified as they are written. As the stylus 10 traces a character, the motion of the stylus is transmitted by way of a pantograph 11 to magnets 12 and 13 which induce voltages proportional to the vertical and horizontal components of motion in coils 14 and 15, respectively. A switch located in the stylus and operated by contact of the stylus with the writing surface 16 indicates whether the stylus is in contact during the movement.

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Character Identification Device

Characters traced by a stylus are identified as they are written. As the stylus 10 traces a character, the motion of the stylus is transmitted by way of a pantograph 11 to magnets 12 and 13 which induce voltages proportional to the vertical and horizontal components of motion in coils 14 and 15, respectively. A switch located in the stylus and operated by contact of the stylus with the writing surface 16 indicates whether the stylus is in contact during the movement.

At the end of each character the operator must touch the stylus to the writing surface without moving it laterally to indicate the end of a character.

A basic stroke detector 17 produces outputs representative of vertical, slant right, slant left and horizontal movements in response to the outputs of coils 14 and 15, as well as the end of character signals.

A decoder 18, in response to the outputs of the basic stroke detector, provides outputs indicative of the character traced by weighing the various stroke directions and summing the weights.

Stroke sequences may also be utilized to permit a lower standard of character conformity by the operator.

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