Patent ID: 6393145
Filing Date: 2002-05-21
Classification: G09G

Abstract:
For use in a system for rendering an image on a device having a plurality of pixels and a plurality of separately controllable sub-pixel elements of different colors per pixel, a method for improving spatial resolution of an image that is rendered by processing image information, the method comprising:accepting digital scan lines of the image information representing a discrete values of an image, the scan lines including at least two color components, each said scan line comprising at least two samples per sub-pixel element, wherein each at least two samples correspond to one of the color components; applying first filters to the digital scan lines to produce oversampled scan lines, wherein each oversampled scan line comprises at least two new samples for each sub-pixel component that are derived from the filtering of the sets of the samples; for each of the sub-pixel elements in each of the oversampled scan lines, applying second filters to the new samples to generate a separate filtered color value associated with each sub-pixel element, the second filter from which the separate filtered color value for a given sub-pixel element is derived being spatially displaced from the second filters applied for other sub-pixel elements, such that each separate filtered color value is derived from spatially different samples of the oversampled scan lines; mapping each separate filtered color value to the sub-pixel element associated therewith, such that each pixel element in a pixel has a different separate filtered color value mapped thereto; and displaying the image by separately controlling each sub-pixel element using the separate filtered color value mapped thereto.