Acoustic tablet

An acoustic tablet, also known as a spark tablet, is a form of graphics tablet that uses sound to locate the position of the stylus within the drawing area.

The general functionality of acoustic tablets is based on a sound-emitting stylus and microphones that are used to record the sound. The current position of the stylus can be calculated according to the difference in the timing of the recorded sound. The sound can, for example, be a small electrical discharge that is emitted when the stylus is placed near the surface of the tablet. Although acoustic tablets are often considered outdated and inaccurate in comparison with more recent technologies, they are used in some specialized products [Citation
last=
first=
title = AirPen Storage Notebook: PC NoteTaker
date =2005-06-15
publisher=Pentel Co Ltd., www.pegatech.com
url=http://rwservices.no-ip.info:81/pens/biblio05.html#Pentel05
access-date = ] , because they do not require a physical "tablet".

Notes

See Also

*Graphics tablet