Display control apparatus having a cursor
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United States of America Patent
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-
Aug 30, 1988
Grant Date -
N/A
app pub date -
Mar 28, 1986
filing date -
Mar 29, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus includes alignment means (13, 14) for determining the direction of a sight-line (12) extending from an observer (11) to a display surface (10), projection means (15, 16) for projecting an image of a graticule into the sight-line for movement therewith, and control means (17) operable to cause the display of a movable cursor on the display surface (10) when the sight-line (12) intersects the display surface.
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