optacon - An X program for the Optacon II
Specifying the -dev option instructs the optacon utility
to use the next argument as the file for the Optacon II
device. By default, the device is /dev/tty00. Specifying
the -interval option instructs the optacon utility to use
the next argument as the interval for the Optacon II
device. The interval specifies how often (in milliseconds)
the optacon utility will update the display of the
Optacon II. By default, the interval is 10 milliseconds.
The Optacon II, a product of TeleSensory Corporation, is
an optical-to-tactile conversion device meant to assist
the blind in accessing visual information. The optacon
utility was made specifically to allow blind users to use
an Optacon II to have more access to an X Window System
display. The optacon utility does so by mapping the pixels
surrounding the on-screen pointer to the pins on the
Optacon II. All black pixels will cause the associated
Optacon II pins to vibrate, and all other pixels will
cause the associated Optacon II pins to remain still.
X DEFAULTS INFORMATION [Toc] [Back]
The format for a resource specification for the optacon
Specifies the resource. Specifies the value that is to be
assigned to the resource.
For details about modifying resources, see X(1 X).
Because each X Window System toolkit-based application can
consist of a combination of widgets (for example, push
buttons and a scroll bar), you can form the name string
for a new resource specification by adding widget class
and name identifiers to the string. For further information
about adding class and name identifiers, see X(1 X).
The following sample shows the optacon resources and their
*dev: /dev/tty00 *interval: 10
X Window System is a trademark of MIT.
The Optacon II is a product of TeleSensory Corporation,
P.O. Box 7455
Mountain View, CA 94039-7455
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