A touch-screen phone for the blind
2 Apr 2009, 0020 hrs IST, ANI
LONDON: Scientists have now created a vibrating
touch screen phone that can simulate
Braille characters and bring the benefits of
touch-screen technology to visually
challenged people. Taking a major step towards
presenting Braille characters on mobile,
Jussi Rantala of the University of Tampere in
Finland and colleagues tried to display
these dots on a touch-screen device.
The researchers used a cellphone which has a
piezoelectric material built into the
touch screen that vibrates when an electric
signal is applied to it. In Braille,
letters are encoded using a two-by-three matrix
in which each character is represented
by a different configuration of raised and absent
dots. The experts installed software
that represents a raised dot as a single pulse of
intense vibration, and an absent
dot as a longer vibration made up of several weaker pulses.
Add more friends to your messenger and enjoy! Go to
http://messenger.yahoo.com/invite/
To unsubscribe send a message to [email protected] with
the subject unsubscribe.
To change your subscription to digest mode or make any other changes, please
visit the list home page at
http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in
