Double pen up event

Details Double pen up event Double pen up event

1995-10-16

1999-11-23

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

345156, 178 18, G09G 500

Patent

active

059908750

ABSTRACT:
A pen-based computer system device includes a digitizer and utilizes a passive stylus as an input device. The system emulates standard two-button mouse functions by generating data packets corresponding to the x-y coordinates of the stylus for each pen-down event. In order to prevent malfunction of the system, a plurality of packets are generated for each pen-up event to prevent maloperation of the system in the event a data packet for a pen-up event is lost or garbled.

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