Information inputting method and device

Details Information inputting method and device Information inputting method and device

1997-04-15

1999-08-03

Powell, Mark R.

Computer graphics processing and selective visual display system

Computer graphics processing

Shape generating

345443, 382197, 382202, 382241, 382242, G06T 530

Patent

active

059331496

ABSTRACT:
An information inputting method, as well as an information inputting device, extracts effective characteristic points from inputted stroke information and outputs coordinate information relating to the extracted characteristic points. First point coordinates values are input in a sampling cycle at a predetermined sampling rate. Second point coordinates values are input in the sampling cycle delayed a predetermined time behind the inputting of the first point coordinate values. A first vector is formed based on the first and second point coordinate values. First and second point coordinate values are also input in the subsequent sampling cycle, and a second vector is determined based thereon. The first point coordinate values inputted earlier are selected when these values cause the angle formed between the first and second vectors to exceed a predetermined threshold value. Information concerning the selected first point coordinates values are output to, for example, a host device.

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patent: 5742751 (1998-04-01), Imanishi et al.
patent: 5760787 (1998-06-01), Piper

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