Invention Grant
- Patent Title: Illumination field blending for use in subtitle projection systems
- Patent Title (中): 用于字幕投影系统的照明场混合
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Application No.: US12019496Application Date: 2008-01-24
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Publication No.: US07802888B2Publication Date: 2010-09-28
- Inventor: Brian D. Wichner , Mark Peterson
- Applicant: Brian D. Wichner , Mark Peterson
- Agency: Perkins Coie LLP
- Main IPC: G03B21/26
- IPC: G03B21/26 ; G03B21/20 ; G03B21/00 ; G03B41/02 ; H04N5/64 ; G06T13/00 ; G09G5/00

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.
Public/Granted literature
- US20080180642A1 ILLUMINATION FIELD BLENDING FOR USE IN SUBTITLE PROJECTION SYSTEMS Public/Granted day:2008-07-31
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