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The
potential of modern low cost technologies as tools in the delivery of Assistive technology
have been discussed (Shapcott, 1994). An example of the technology of the time was shown,
the AT&T video phone- this was little better than an ordinary phone call in getting
information to a remote party because of small picture size, low resolution and slow frame
rates. New low cost POTS based video conferencing
technologies are appearing rapidly. These are based around low cost digital video chips
and sophisticated video compression techniques. These can cost little as approximately
$400 (US) for each unit. See picture below. The units consist of a camera and all required
electronics in a small box and are relatively easy to use. These systems are now able to
transmit and receive reasonable video images and are being further developed to accept
RS232 computer inputs which have the potential of enabling the transmission of
accompanying electronic data. |
