Browse Prior Art Database

High Speed for Generating or Updating Graphics with Splines on a Screen

IP.com Disclosure Number: IPCOM000045686D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Wahl, FM Wong, KY [+details]

Abstract

This invention relates to the generation of the locus of a spline curve avoiding the xplicit computation of intermediate points along the curve by a host CPU. Once an executing machine provides the display processor with a list of knots, the host CPU can be dispatched to execute another task. The display processor can then generate a curve. This overlap permits utilization efficiency. More particularly, the invention uses a spline knot vector representation of a continuous function for directly driving the display generator. This omits the point plotting and sampling steps involved in the bit representation of functions and their conversion to an analog format.