Display control apparatus having a cursor
First Claim
1. Display control apparatus which includes alignment means for determining the direction of a sight-line extending from observer to a display surface, projection means for introducing an image of a graticule into the sight-line for movement therewith, and control means responsive to said alignment means and operable to cause a movable cursor to be displayed and positioned on the display surface at the intersection of the sight-line and the display surface and to remove the image of the graticule when the cursor is displayed whereby said control means causes the display of said movable cursor on said display surface when said alignment means determines that the observer'"'"'s line of sight intersects said display surface.
4 Assignments
0 Petitions
Accused Products
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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Citations
17 Claims
- 1. Display control apparatus which includes alignment means for determining the direction of a sight-line extending from observer to a display surface, projection means for introducing an image of a graticule into the sight-line for movement therewith, and control means responsive to said alignment means and operable to cause a movable cursor to be displayed and positioned on the display surface at the intersection of the sight-line and the display surface and to remove the image of the graticule when the cursor is displayed whereby said control means causes the display of said movable cursor on said display surface when said alignment means determines that the observer'"'"'s line of sight intersects said display surface.
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9. A display control apparatus for an observer comprising:
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(a) mounting means simultaneously movable with a line sight of the observer; (b) a display surface; (c) alignment means for determining the direction of said line of sight of the observer; (d) a first projection means disposed on said mounting means for introducing a first image of a graticule into said line of sight of the observer; and (e) control means responsive to said alignment means and for causing the display of a movable cursor on said display surface substantially at the intersection of said display surface and said line of sight of the observer and also for removing said first image of a graticule when said cursor is displayed whereby said control means causes the display of said movable cursor on said display surface when said alignment means determines that the observer'"'"'s line of sight intersects said display surface. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification