Optics: image projectors – Lamp control
Reexamination Certificate
2007-03-16
2010-10-19
Le, Que T (Department: 2878)
Optics: image projectors
Lamp control
C348S222100, C250S208100
Reexamination Certificate
active
07815317
ABSTRACT:
A projector includes an image acquiring unit that acquires an image including the projection image captured by the image-capturing device during image projection, an image region separating unit that separates a projection image region and a background image region from the acquired image, a background image time-lapse change storage unit that stores a time-lapse change of the background image acquired by a background time-lapse change acquiring unit, a projection image time-lapse change storage unit that stores a time-lapse change of the projection image acquired by a projection image time-lapse change acquiring unit, an tendency-of-use judging unit that judges a tendency of use of the projector on the basis of the stored time-lapse change of the background image and the stored time-lapse change of the projection image, and a light quantity adjusting unit that adjusts a light quantity of the light source on the basis of the judgment result.
REFERENCES:
patent: 5253302 (1993-10-01), Massen
patent: 6538751 (2003-03-01), Ono
patent: 2007/0091433 (2007-04-01), Garner et al.
patent: A 2000-241874 (2000-09-01), None
patent: A 2005-318510 (2005-11-01), None
Bennett Jennifer
Le Que T
Oliff & Berridg,e PLC
Seiko Epson Corporation
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