Projector type display apparatus

Details Projector type display apparatus Projector type display apparatus

2007-01-23

2007-01-23

Perkey, W. B. (Department: 2851)

Optics: image projectors

Composite projected image

C353S069000, C353S025000, C353S122000, C382S291000, C382S203000, C345S002200, C362S259000, C362S800000, C359S027000

Reexamination Certificate

active

11491224

ABSTRACT:
There is provided a safe image display apparatus for projecting an image on a screen that can minimize a stimulus to eyes, retinae and optic nerves from projected light entering into the eyes directly. By comparing a displayed image captured by a camera with an input image signal, a changed area is detected as a difference area and, then, a projected image signal is generated wherein a picture area image signal in the input image signal that corresponds to this difference area is masked by a black signal. The obtained projected image signal is projected onto the screen.

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