System and method for improving video image sharpness
AssigneeTexas Instruments Incorporated
InventorAndrew I. Russell
Life of this patent
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Abstract
A system for, and method of, improving video image sharpness and a continuous-light-emitting video display system employing the system or the method. In one embodiment, the system for improving video image sharpness includes: (1) a sub-frame generator configured to receive a frame of a video image and generate plural sub-frames therefrom and (2) a spatial filter, associated with the sub-frame generator and configured to cause the plural sub-frames to be spatially filtered with respect to one another based on a display sequence thereof.
Claims12
A method for generating real-time images from an input video image signal for display by a spatial light modulator video display system, comprising:
- receiving the input video image signal comprising data representing sequential image frames in frame format;
- separating luminance and chrominance components of the received data representing an image frame;
- computing maximum luminance and minimum luminance components from the separated luminance components for the frame using a spatial filter;
- generating a plurality of sub-frames from the frame using the luminance, maximum luminance and minimum luminance components for the frame, the sub-frames having different levels of spatial-frequency content and being ordered in a display sequence with sub-frames having the highest spatial-frequency content being near the center of the sequence, sub-frames having the lowest spatial-frequency content being near the beginning or end of the sequence, and sub-frames having spatial-frequency content between the highest and lowest being between the center and beginning or end of the sequence;
- recombining the luminance and chrominance components of the sub-frames in the ordered display sequence;
- reformatting the ordered display sequence of recombined component subframes into a correspondingly ordered sequence of bit planes;
- and
- using the correspondingly ordered sequence of bit planes to sequentially set pixels of the spatial light modulator for display of a video image corresponding to the image frame.
Dependencies are inferred from the claim text.