US PATENT SUBCLASS 463 / 34
.~.~.~ Image projection

Current as of: June, 1999
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463 /   HD   AMUSEMENT DEVICES: GAMES

1  DF  INCLUDING MEANS FOR PROCESSING ELECTRONIC DATA (E.G., COMPUTER/VIDEO GAME, ETC.) {15}
30  DF  .~ Perceptible output or display (e.g., tactile, etc.) {2}
31  DF  .~.~ Visual (e.g., enhanced graphics, etc.) {2}
34.~.~.~ Image projection

DEFINITION

Classification: 463/34

Image projection:

(under subclass 31) A visual output or display wherein visually perceivable information (i.e., an image) is optically transmitted over a distance onto a surface or screen to be viewed therefrom.

(1) Note. The purpose of the projection is usually to enlarge or reduce the size of the image or to provide a more convenient location of the image for viewing.

(2) Note. A cathode-ray tube (CRT), per se, is not considered to be an image projector for this subclass because raster scanning of an electron beam on a phosphorescent screen is considered to be image formation rather than image projection. In contrast, a CRT in combination with a lens or other optical projection structure to project a CRT image is proper for this subclass.

SEE OR SEARCH CLASS

353, Optics: Image Projectors, appropriate subclass for optical image projector structure.

359, Optics: Systems (Including Communication) and Elements, appropriate subclass for an optical communication structure, especially

1+, for a holos:graphic system.