Illumination field blending for use in subtitle projection...

Details Illumination field blending for use in subtitle projection... Illumination field blending for use in subtitle projection...

2005-04-26

2005-04-26

Nguyen, Judy (Department: 2851)

Optics: image projectors

Composite projected image

C353S020000, C353S094000, C353S102000, C353S121000, C353S122000, C352S047000, C352S055000, C352S090000, C348S744000

Reexamination Certificate

active

06883917

ABSTRACT:
A projection system that projects a text or subtitle box onto an image minimizes the contrast between the text box and the image. A transition region surrounding the text box minimizes visual disruption to the image onto which the text box is projected. The positions of optical elements of a text projector enable the text box to gradually fade out. The text projector has a lamp that defines an object plane and a light path modifier. The light path modifier is offset from the object plane, toward the lamp to blend the borders of the text box into the image projected by an image projector.

REFERENCES:
patent: 5828410 (1998-10-01), Drapeau
patent: 5959717 (1999-09-01), Chaum
patent: 6663244 (2003-12-01), Wichner et al.
patent: 20040027539 (2004-02-01), Plunkett
patent: 0 987 899 (2000-02-01), None
Yamauchi et al, XP0106196.
Dery, XP0154133.
McArthur et al, XP0007143.

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