Handwriting recognition system

Details Handwriting recognition system Handwriting recognition system

2006-05-30

2006-05-30

Ahmed, Samir (Department: 2623)

Image analysis

Image sensing

Hand-held

C382S314000

Reexamination Certificate

active

07054510

ABSTRACT:
In order to improve the accuracy of recognition of hand-written input using a stylus, output signals from a plurality of accelerometers representing x and y axis acceleration and deceleration are sampled at a predetermined rate and passed through a digital bandpass filter to remove high frequency components and dc components arising from gravity. X and y vectors derived from the original x and y input signals are passed to a classifier using a hidden Markov model. Bandpass filtering improves the robustness of the interpretation of the vectors against stored templates which may be templates of individual characterizations or of whole words.

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patent: WO 97/16799 (1997-05-01), None
patent: WO 97/44758 (1997-11-01), None

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