optacon(1X) optacon(1X)
NAME
optacon - An X program for the Optacon II
SYNOPSIS
optacon [options]
OPTIONS
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 Opta-
con 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.
DESCRIPTION
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
The format for a resource specification for the optacon utility is:
*resource:value
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 informa-
tion about adding class and name identifiers, see X(1 X).
The following sample shows the optacon resources and their default val-
ues:
*dev: /dev/tty00 *interval: 10
TRADEMARKS
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
800-227-8418
[email protected]
SEE ALSO
X(1X)
DECwindows User's Guide
optacon(1X)