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US 9,792,847 B2Granted
Active video projection screen
AssigneeSony Corporation
InventorsThomas Dawson, Steven Richman
Life of this patent
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Abstract
Instead of a monochromatic projection screen, an active projection screen is provided which varies reflectance and gray level (black to white) in synchronization with the content being shown. Groups of multiple screen pixels, which are smaller than each projected pixel from the projector, are assigned to each respective larger projection pixel.
Claims20
Apparatus comprising:
- at least one projection screen;
- at least one computer memory that is not a transitory signal and that comprises instructions executable by at least one processor to:
- establish, for at least some pixels of at least some frames of a color video file, respective grayscale values;
- using each one of at least some of the grayscale values, establish plural screen pixel control values, each screen pixel control value defining whether an associated screen pixel is to be configured to present a white appearance or a black appearance, such that each of at least some pixels in the color video file is associated with plural screen pixel control values;
- arrange the grayscale values and/or the screen pixel control values in a grayscale file in synchronization with the frames of the color video file from whence the grayscale values were derived;
- render the color video file accessible for projection onto the projection screen;
- and
- render the grayscale file accessible to the the projection screen for control of screen pixels in the projection screen responsive to the screen pixel control values.
5 more elements
Apparatus comprising:
- at least one active screen;
- at least one computer memory that is not a transitory signal and that comprises instructions executable by at least one processor to:
- associate respective groups of plural screen pixels of the active screen with respective individual color pixels from a projector to be projected onto the active screen;
- and
- in synchronization with projection of the color pixels onto the active screen, control the respective plural screen pixels of each of at least some of the respective individual color pixels to establish a demanded grayscale on the active screen.
2 more elements
A method comprising:
- on at least one computer storage, associating plural screen pixels with respective individual pixels to be projected;
- using at least one projector, projecting the pixels to be projected onto a screen associated with the screen pixels to produce a demanded color image;
- and
- using at least one processor, controlling the screen pixels to produce a demanded grayscale derived from the respective pixels to be projected.
1 more element
Dependencies are inferred from the claim text.