Transparency for use with a flying spot scanner to generate imag

Details Transparency for use with a flying spot scanner to generate imag Transparency for use with a flying spot scanner to generate imag

1982-09-29

1985-05-07

Haroian, Harry N.

Optics: image projectors

Mapping or aerial photograph rectifying

353120, 353122, G03B 2128

Patent

active

045154503

ABSTRACT:
A transparency that is used in a flying spot scanner to generate imagery for simulated flight contains a rectangular center section and eight peripheral sections, four of which lie along the side boundaries of the center section, while the remaining four are at the corners of the center section such that their edges are contiguous to the edges of the side peripheral sections. Each of the nine sections is laid out such that corresponding terrain features lie along opposite margins. This coupled with the fact that all nine sections are identical enables all of the sections to blend together into a mosaic so that the section boundaries within the interior of the mosaic are barely, if at all, discernible. As a consequence, the terrain pattern along any boundary of the center section is repeated along the opposite boundary. A projected raster moves essentially within the center section in response to commands issued from a simulated cockpit. Whenever the projected raster reaches one of the boundaries for the center section, it indexes instantaneously to a corresponding point on the opposite boundary and thereafter continues generally in the same direction of advance. Since the terrain features are identical at the two boundaries, the change is imperceptible, and accordingly, the imagery that is observed from the cockpit gives the illusion of continuous flight.

REFERENCES:
patent: 1136236 (1915-04-01), Killman
patent: 4193211 (1980-03-01), Dotsko
patent: 4427274 (1984-01-01), Pund et al.

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