US PATENT SUBCLASS 348 / 745
.~.~ With alignment, registration or focus

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
744  DF  .~ Projection device {7}
745.~.~ With alignment, registration or focus {2}
746  DF  .~.~.~> Raster shape distortion
747  DF  .~.~.~> Raster size or position compensation

DEFINITION

Classification: 348/745

With alignment, registration or focus:

(under subclass 744) Subject matter wherein an apparatus is provided for causing the images emanating from each of plural projection devices to be in coincidence (i.e., registered) on the screen or for causing one or more projected images to be in high resolution (i.e., focused).