Multiple pen stroke character set and handwriting...

Details Multiple pen stroke character set and handwriting... Multiple pen stroke character set and handwriting...

2005-01-04

2005-01-04

Chang, Jon (Department: 2623)

Image analysis

Pattern recognition

On-line recognition of handwritten characters

C382S311000

Reexamination Certificate

active

06839464

ABSTRACT:
A pen-based computer text input system capable of interpreting a special pre-defined set of single stroke glyphs. Each input stroke is identified with one of three categories: (1) pre-character modifier strokes, (2) character or symbol strokes, or (3) post-character modifier strokes. Pre-character modifier strokes precede character strokes and inform the present recognition system that a subsequently entered character stroke is to be modified by the pre-character modifier stroke in a pre-defined manner. Character strokes cause a character or symbol to be displayed on the display device the moment it is input on the writing tablet, interpreted in accordance with any pre-character modifier stroke. A post-character modifier stroke causes the recognition system to modify, in a pre-defined manner, a character or symbol which was previously entered and displayed. An important advantage of the present invention is its ability to provide immediate recognition of multiple stroke characters without using boxed input.

REFERENCES:
patent: 4972496 (1990-11-01), Sklarew
patent: 5500937 (1996-03-01), Thompson-Rohrlich
patent: 5592566 (1997-01-01), Pagallo et al.
patent: 5596656 (1997-01-01), Goldberg
patent: 5717939 (1998-02-01), Bricklin et al.
patent: 6493464 (2002-12-01), Hawkins et al.
GRiDPAD Computer Owner's Guide, Jan., 1990.

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