Handwriting input apparatus

Details Handwriting input apparatus Handwriting input apparatus

2005-11-16

2010-02-16

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

Reexamination Certificate

active

07663608

ABSTRACT:
A handwriting input apparatus comprises a position-encoding layer and a pen. The position-encoding layer comprises a plurality of position-encoding pattern. The position-encoding layer is transparent to visible light and is reflective to light of predetermined wavelengths. Each position-encoding pattern represents a specific code. The pen has a projector and a camera at one end. The projector is adapted to generate a light beam of the predetermined wavelengths toward the position-encoding layer. The camera is adapted to capture images of the plurality of position-encoding pattern.

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