Writing tip position sensing and processing apparatus

Details Writing tip position sensing and processing apparatus Writing tip position sensing and processing apparatus

1991-12-31

1994-03-15

Messinger, Michael

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

382 13, 250226, 345163, 345180, G01V 904, G09G 302, G06K 900

Patent

active

052947920

ABSTRACT:
A self-contained pen computer is provided that is capable of acquiring data representative of written strokes of the stylus of the pen and then recognizing the symbols associated with these pen strokes, or compacting these strokes. These recognized symbols or compacted strokes are stored in a memory contained in the pen and are transmitted via a transmitter contained in the pen to a host computer.

REFERENCES:
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patent: 4751741 (1988-06-01), Mochinaga et al.
patent: 4811004 (1989-03-01), Person et al.
patent: 4856077 (1989-08-01), Rothfjell
patent: 4922236 (1990-05-01), Heady
patent: 5007085 (1991-04-01), Gregnias et al.
patent: 5027115 (1991-06-01), Sato et al.
patent: 5051736 (1991-09-01), Bennett et al.
patent: 5107541 (1992-04-01), Hilton
Tappert et al., "The State of the Art in On-Line Handwriting Recognition," IEEE Trans. on Pattern Analy. and Mach. Int. vol. 12, No. 8, Aug. 1990, 787-808.

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