Patent ID: 9098933
Filing Date: 2015-08-04
Classification: G06F,G06T,G09G,H04N

Abstract:
1. A memory management system for use with systems for generating 3-dimensional computer images, comprising: a) means for subdividing an image into a plurality of rectangular areas; b) a memory for storing object data pertaining to objects in the image which fall in each rectangular area, the memory comprising i) at least one portion allocated to each rectangular area for storing object data pertaining to objects in the respective rectangular area and ii) at least one portion allocated as a global list for storing object data pertaining to objects falling in more than one rectangular area; c) means for storing the object data in the memory; d) deriving means for deriving image data and shading data for each rectangular area, from the object data; e) means for supplying object data for each rectangular area from the respective portion of the memory and, if the rectangular area contains objects also falling in at least one other rectangular area, also from the global list, to the deriving means; and f) means for storing the image data and shading data derived by the deriving means, for display.