Rapid estimation of effective illuminance patterns for projected light fields
First Claim
1. A controller for a display, the controller comprising:
- a data processor;
a program store containing software instructions executable by the processor;
first interface electronics operable to output first driving signals useful for controlling a plurality of individually-controllable light sources to emit light having intensities according to the first driving signals;
second interface electronics operable to output second driving signals useful for controlling pixels of a spatial light modulator to modulate light from the light sources;
a plurality of point spread function components stored as data accessible to the data processor, the stored point spread function components collectively representing point spread functions for the plurality of light sources;
the controller configured by the software instructions in the program store to calculate using the plurality of stored point spread function components an effective luminance pattern that would be present at a modulator when the light sources are driven according to the first driving signals and to control the second interface electronics to generate the second driving signals based on the calculated effective luminance pattern.
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Accused Products
Abstract
Apparatus and methods are provided that employ one or more of a variety of techniques for reducing the time required to display high resolution images on a high dynamic range display having a light source layer and a display layer. In one technique, the image resolution is reduced, an effective luminance pattern is determined for the reduced resolution image, and the resolution of the effective luminance pattern is then increased to the resolution of the—display layer. In another technique, the light source layer'"'"'s point spread function is decomposed into a plurality of components, and an effective luminance pattern is determined for each component. The effective luminance patterns are then combined to produce a total effective luminance pattern. Additional image display time reduction techniques are provided.
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Citations
21 Claims
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1. A controller for a display, the controller comprising:
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a data processor; a program store containing software instructions executable by the processor; first interface electronics operable to output first driving signals useful for controlling a plurality of individually-controllable light sources to emit light having intensities according to the first driving signals; second interface electronics operable to output second driving signals useful for controlling pixels of a spatial light modulator to modulate light from the light sources; a plurality of point spread function components stored as data accessible to the data processor, the stored point spread function components collectively representing point spread functions for the plurality of light sources; the controller configured by the software instructions in the program store to calculate using the plurality of stored point spread function components an effective luminance pattern that would be present at a modulator when the light sources are driven according to the first driving signals and to control the second interface electronics to generate the second driving signals based on the calculated effective luminance pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A controller for a display comprising a plurality of light sources arranged to illuminate a spatial light modulator by way of one or more optical structures, the controller comprising:
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a plurality of stored point spread function components, the stored point spread function components collectively representing point spread functions for one of the plurality of light sources including the effect of the optical structures; first interface electronics operable to output first driving signals useful for controlling the plurality of light sources to emit light having intensities according to the first driving signals; second interface electronics operable to output second driving signals useful for controlling pixels of the spatial light modulator to modulate light from the light sources; control electronics connected to receive image data and to control the first and second interface electronics by processing the image data using the plurality of stored point spread function components to determine the first and second driving signals.
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Specification