Projector type display apparatus
AssigneeHitachi, Ltd.
InventorsTomoki Kobori, Fumio Haruna, Tsuneyuki Nozawa
Life of this patent
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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.
Claims20
A projector type display apparatus for applying light from a light source to a picture display device and projecting outgoing light from said picture display device onto a screen in an enlarged manner comprising:
- display device controller which controls said picture display device based on an input image signal;
- a camera which captures an image projected on said screen;
- detector which detects an area projected on said screen;
- image size controller which changes, based on detection results from said detector, the captured image from said camera into a predetermined image size;
- and
- extractor which extracts a person area in said captured image the size of which is changed by said image size controller;
- wherein said display device controller controls so that an area on said image display device corresponding to said person area is substituted by predetermined data.
Dependencies are inferred from the claim text.