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US 7,609,442 B2Granted
Synchronizing screen
AssigneeHewlett-Packard Development Company, L.P.
InventorsPeter James Fricke, Timothy Emmerich, Gregory J. May
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Abstract
Embodiments of synchronizing modification of an optical characteristic of a screen are disclosed.
Claims29
A method comprising:
- controlling a timing of modifying an optical characteristic of a projection screen using (1) a timing of a color component of light incident on a sensor, the light including ambient light and projected light forming an image on the projection screen, and (2) a signal related to a timing of the projected light.
An apparatus comprising:
- a screen having an adjustable optical characteristic;
- a sensor to provide a sensor signal indicating timing of a color component of light;
- and
- a circuit to generate a synchronization signal using the sensor signal to synchronize adjustment of the optical characteristic with the timing of the color component.
1 more element
A computer-readable medium comprising:
- stored instructions to synchronize modification of an optical characteristic of a projection screen with a timing of a change between color components of light of an image incident on the screen, wherein the synchronizing uses a timing of a color component of light incident on a sensor and a signal related to a timing of projected light.
An apparatus comprising:
- means for sensing an occurrence of a color component of light;
- and
- means for synchronizing an optical characteristic modification of a screen based on a qualification signal and the occurrence of the color component of light.
Dependencies are inferred from the claim text.