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Patent

Computer graphics system and method employing frame buffer having subpixel field, display fields and a control field for relating display fields to the subpixel field

Kei Kawase
TLDR
In this article, a computer graphics system is described for generating pixel data corresponding to a plurality of pixels to be displayed, which includes a frame buffer having entries associated with each of the pixels.
Abstract
A computer graphics system is disclosed for generating pixel data corresponding to a plurality of pixels to be displayed. The computer graphics system includes a frame buffer having entries associated with each of the pixels. Each of the entries includes a subpixel data field, a plurality of display data fields, and a control field. For each entry the sub-pixel data field stores data corresponding to a set of sub-pixels, at least one of the plurality of display data fields stores data determined by filtering of the data of the sub-pixel data field of the entry, and the control field stores data representing a relationship between the sub-pixel data field of the entry and each of the plurality of display data fields of the entry.

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Citations
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Patent

System and method for reducing the effects of aliasing in a computer graphics system

TL;DR: In this article, the authors present a system and method for anti-aliasing edges of adjacent primitives by determining whether a pixel is an edge pixel of a filled primitive, approximating a coverage area of the pixel, the coverage area being the area from the pixel interior to the primitive edge.
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TL;DR: In this paper, a method and computer graphics system capable of super-sampling and performing real-time convolution are described, which includes a graphics processor, a sample buffer, and a sample-to-pixel calculation unit.
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TL;DR: In this article, a method and computer graphics system capable of super-sampling and performing programmable real-time filtering or convolution are disclosed, which includes a graphics processor, a sample buffer, and a sample-to-pixel calculation unit.
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Method and apparatus for rendering sub-pixel anti-aliased graphics on stripe topology color displays

TL;DR: An anti-aliasing method and apparatus for use with a stripe topology color display provides sub-pixel level smoothing in a manner which enhances the apparent resolution of the display, yielding enhanced object shape and positioning, while maintaining accurate foreground and background colors as discussed by the authors.
References
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Proceedings ArticleDOI

Reality Engine graphics

Kurt Akeley
TL;DR: The architecture of the RealityEngine graphics system is described, then some of the decisions made during its design are justified, and the system enables realtime, “outthe-window” image generation and interactive image processing.
Patent

Graphics subsystem with coarse subpixel correction

TL;DR: In this article, a relatively coarse resolution is used for subpixel correction, so that the DDAs (and other functional blocks) do not have to perform a full multiply: instead they merely perform simple add operations (addition of partial products) to derive the necessary offset from the delta-X values, using a proportionality constant provided by the rasterizer.
Patent

Method and apparatus for rendering anti-aliased polygons

TL;DR: In this article, the alpha channel comprises either a sub-pixel mask associated with each pixel which indicates the amount and subpixel regions of coverage or a single value indicative of the percentage of coverage of a pixel.
Patent

System and method for drawing antialiased polygons

TL;DR: In this paper, super-sampling was used to combat the effects of aliasing in antialiasing in a video digital to analog converter (DAC) by using 16 array sites to sample 16 pixels.
Patent

An extendable multiple image-buffer for graphics systems

TL;DR: In this paper, a pixel buffer is coupled with a control buffer module for conveying pixel-related information, including pixel data, pixel addresses, and the results of pixel tests.