Multiple pixel generator

专利名称：Multiple pixel generator

发明人：Aranda, Michael Archangel,Ebbers, Timothy

Jon,Iida, Yoshio,Kindgren, TerenceWallace,Robertson, Taggart Huth

申请号：EP88308652.2申请日：19880919公开号：EP03142A3公开日：19900919

专利附图：

摘要：A system for generating multiple pixels in a single machine cycle employs aplurality of parallel vector generators. Each of the parallel generators is initialized with

an error term which is calculated in accordance with Bresenham's algorithm. The signs ofthese error terms are then used to determine the region within the first octant of thecoordinate system which contains the function for which the pixels are to be generated.The region data, in turn, determine two selectable values for an increment which is to beadded to a running error term for each of the parallel generators as multiple pixels aresimultaneously generated. The choice of the two possible values to be added to theerror term is dependent upon the sign of the error term itself. The sign of the runningerror term for each vector generator is utilized to form a sequence of binary data whichrepresents the incremental changes in the pixel positions as the pixels are beinggenerated. In a preferred embodiment, the binary data is translated into pixel positiondata which is then stored in a memory device. Any generated pixel data which cannot bestored in the machine cycle in which it is generated is re-routed for storage in later cycles.

申请人：International Business Machines Corporation

地址：Old Orchard Road Armonk, N.Y. 10504 US

国籍：US

代理机构：Burt, Roger James, Dr.

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