The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 1991
Filed:
Nov. 10, 1986
Edwin L Rehme, Longmont, CO (US);
Vahid A Samiee, Tualatin, OR (US);
Auto-trol Technology Corporation, Denver, CO (US);
Abstract
A pixel control system and method of controlling the intensity of pixels on a raster video display screen with scan lines grouped in 20 pixel increments across the scan line to display an object. In a first operational sequence for a given polygon that represents a part of the object separate red, blue, green and depth sections use the value (R) of a reference pixel in a first pixel group at the left side of the object to determine the pixel by pixel change (delta) in intensity and depth across the first pixel group. The sections are operated in successive operational sequences to process the other pixel groups along the scan line until the pixel group at the right side of the polygon is processed. The operations are repeated in respect to successive scan lines to process the entire polygon. Each section has two adder stages. The first stage produces signals representing R, R plus and minus certain deltas and selected other deltas. The second stage produces other R plus delta signals so that after set up there is one signal for each of the 20 pixels per pixel group output at the same time to provide intensity signals for each group, where the intensity varies uniformly on a pixel by pixel basis across each group and from group to group.