Display system
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid B Meados, David C Collins, Andrew Arthur Hunter
Life of this patent
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Abstract
One embodiment of a display system includes a control module that controls a position of an adjustable neutral density filter based on a calculated filter setting and that controls modulation of a set of frame data by an image modulator based on a calculated gain setting, and an image analysis module that calculates a gain setting and a filter setting for the set of frame data and forwards the calculated gain setting and the filter setting to said control module.
Claims20
A display system, comprising:
- a control module that controls a position of an adjustable neutral density filter based on a calculated filter setting and that controls modulation of a set of frame data by an image modulator based on a calculated gain setting;
- and
- an image analysis module that calculates a gain setting and a filter setting for said set of frame data and forwards said calculated gain setting and said filter setting to said control module.
A method of controlling a contrast ratio of an image, comprising:
- receiving an image frame data;
- conducting an image analysis of said image frame data by an image analysis module to calculate a gain setting and a filter setting;
- applying said gain setting to said image frame data to control a contrast ratio of said image frame data;
- adjusting an optical neutral density filter to correspond to said gain setting;
- and
- projecting light through said filter, wherein said light corresponds to said image frame data having said gain setting applied thereto.
An image projection apparatus, comprising:
- an image modulator that outputs light corresponding to a set of viewable image data having a controlled contrast ratio;
- a set of machine operable instructions that calculates a gain setting from a set of frame data, wherein said gain setting is applied to said set of frame data to produce said set of viewable image data;
- and
- a set of machine operable instructions that calculates a filter light transmission setting that is applied to light output from said modulator to produce said viewable image, wherein said filter light transmission setting and said gain setting together define said viewable image data having a luminance value substantially similar to a luminance value of said set of frame data.
Dependencies are inferred from the claim text.