Projection display device

Details Projection display device Projection display device

2007-05-01

2007-05-01

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Projected image combined with real object

C353S030000, C353S069000, C353S085000, C353S097000, C353S122000, C348S745000

Reexamination Certificate

active

10940611

ABSTRACT:
The projection display device stores, in a frame memory, a shot image of a test pattern for cases where the obstacle is not represented in the region of the projection; compares, at a comparison unit, a shot image of the test pattern for the case where the obstacle is represented in the region of the projection, with the stored shot image of the test pattern in order to detect an obstacle present in the region of the projection; generates, at an image-mask enlargement-processing unit, an image mask section having a region larger than the region of the detected obstacle; and effects, at a luminance control unit, a control to reduce the luminance in the image mask section.

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