Handwriting input device

Details Handwriting input device Handwriting input device

1998-06-25

2000-08-15

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

345173, 178 1801, 178 1904, G09G 500

Patent

active

061043885

ABSTRACT:
A handwriting input device, despite having a simple structure, achieves correct acquisition of handwritten information. This input device has a pen stem housed inside a pen body formed in the shape of a pen, with the tip of the pen stem left sticking out of an opening formed at one end. This input device further has a pen stem holder having a hemispherical projection formed in its middle portion, an omnidirectional pressure sensor having an actuator and an operation shaft formed integrally, a data processor for processing electric signals outputted from the sensor, and a connector for connecting the tail-end cap portion of the pen stem holder to the operation shaft of the sensor. Thus, this input device detects the force applied to the tip of the pen stem by sensing pressure; in addition, it also detects the up/down movement of the pen stem by sensing pressure.

REFERENCES:
patent: 4109146 (1992-05-01), Hillman
patent: 4667182 (1987-05-01), Murphy
patent: 5111004 (1992-05-01), Gullman
patent: 5434371 (1995-07-01), Brooks
patent: 5461204 (1995-10-01), Makinwa et al.
patent: 5571997 (1996-11-01), Gray et al.

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