The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 11, 1979

Filed:

Mar. 24, 1978
Applicant:
Inventors:

David L Peters, Whitney Point, NY (US);

Arthur P Schnitzer, Vestal, NY (US);

John R Trzeciak, Binghamton, NY (US);

Brain J Woycechowsky, Vestal, NY (US);

Assignee:

The Singer Company, Binghamton, NY (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
35 1 / ; 358104 ;
Abstract

A simulated view on a viewing surface of a raster scan television display of a changeable illuminated area located on a plane surface is provided. The source of illumination is a cone of light whose apex can be located at any distance from an eyepoint and the plane surface and whose conical surface intersects the plane surface creating the illuminated area. Electronic components determine when a line of sight from the eyepoint through the viewing surface intersects the illuminated area. For each line of sight intersection point lying within the illuminated area, a corresponding illumination is created on the viewing surface.


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