Computer graphics processing and selective visual display system – Image superposition by optical means
Reexamination Certificate
2006-10-10
2006-10-10
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Image superposition by optical means
C345S008000, C345S009000, C345S156000
Reexamination Certificate
active
07119762
ABSTRACT:
Alphanumeric images are displayed in common view in one color on a background of a different color using a liquid crystal projection device. The two colors are sufficiently similar so they are not distinguished by the unaided eye of the viewer. A color selective material in the form of glasses is provided to a subclass of the viewers in the audience to enable these viewers to distinguish the alphanumeric subtitles from the background. This material extinguishes either the alphanumeric images or the background, thereby either providing darkened letters on a light background or light letters on a darkened background. The projection and viewing apparatus can be utilized as a motion picture closed captioning system for a mixed audience of hearing impaired and non hearing impaired individuals to permit the hearing impaired to view the subtitles while those individuals not wearing such wavelength selective glasses would not see the subtitles.
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Price Jeremy C.
Shelton David P.
Dharia Prabodh
Price Gerald L.
Shalwala Bipin
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