1
Jorge Gonzalez Lopez, Bruce C Hempel, Bob C Liang: Pipelined lighting model processing system for a graphics workstations shading function. International Business Machines Corporation, Mark S Walker, J Dennis Moore, September 12, 1989: US04866637 (143 worldwide citation)

A lighting model processing system for a computer graphics workstation's shading function includes multiple floating point processing stages arranged and operated in pipeline. Each stage is constructed from one or more identical floating point processors. The lighting model processing system support ...


2
Bruno Ferracini, Jorge Gonzalez Lopez, Giancarlo Pettazzi: System and method for scaling a digital image. International Business Machines Corporation, Sterne Kessler Goldstein & Fox, August 2, 1994: US05335295 (40 worldwide citation)

System and method for scaling the size of a digital image from a first digital image to a second digital image by a specified scaling factor of G. The apparatus comprises an interpolator module configured to magnify the first digital image by a first scaling factor G1. The interpolator is further co ...


3
Jorge Gonzalez Lopez: Image display processor for graphics workstation. International Business Machines Corporation, George E Clark, Mark S Walker, August 29, 1989: US04862154 (36 worldwide citation)

The present invention provides for the combining of image and graphics data in a high-performance raster graphics workstation. It allows the definition of windows on the screen, the dynamic control of the position of those windows, the magnification factor (integer zoom), and a color translation tab ...


4
Bob C Liang, Jorge Gonzalez Lopez: Interpolated display characteristic value generator. International Business Machines Corporation, Mark S Walker, George E Clark, J Dennis Moore, February 14, 1989: US04805116 (34 worldwide citation)

Method and apparatus for providing interpolated display characteristic values, such as intensity or Z value, for pels within a polygon to be displayed by a computer graphics display system. A scanning sequence generates pel addresses such that each pel address so generated is contiguous with a previ ...


5
Jorge Gonzalez Lopez: Image interpolator for an image display system. International Business Machines Corporation, William A Kinnaman Jr, Mark S Walker, January 29, 1991: US04988984 (32 worldwide citation)

An image interpolator implements an interpolation function providing real time, continuous zoom capability to an image dispaly system. Output image pixels are obtained by interpolating the values of the color or intensity of the 2.times.2 matrix of pixels surrounding the point on the input image. Th ...


6
Jorge Gonzalez Lopez, Bob C Liang: Hidden line removal method with modified depth buffer. International Business Machines Corporation, Mark S Walker, J Dennis Moore, August 8, 1989: US04855938 (24 worldwide citation)

Polygon vertex data is processed in three steps to create a graphics display without hidden lines and without gaps in the displayed lines. The technique permits the processing of triangles rather than polygons having four or more sides. In the first step, the Z values for the display points for the ...


7
Jorge Gonzalez Lopez, Thomas P Lanzoni: High speed Z-buffer control. International Business Machines Corporation, William A Kinnaman Jr, Mark S Walker, August 27, 1991: US05043921 (23 worldwide citation)

Z-buffer control logic that provides access AND comparison at speeds unconstrained by DRAM memory access times. A Z-buffer controller is implemented which accumulates a number of pixels in adjacent locations into an associated cell. A Z-buffer comparator accesses Z-buffer retained values for the cel ...


8
Jorge Gonzalez Lopez, Robert S Horton, Thomas P Lanzoni, William L Luken Jr: Concave polygon drawing method and processor for a computer graphics display system. International Business Machines Corporation, Mark S Walker, William A Kinnaman Jr, April 12, 1994: US05303340 (20 worldwide citation)

In a computer graphics display system, a method and processor are disclosed for drawing one of a concave polygon, self-intersecting polygon and polygon with polygonal hole. Pursuant to the method, a mask buffer organized into an M.times.N plurality of addressable constituent pixels is used. The meth ...


9
Jorge Gonzalez Lopez, Thomas P Lanzoni: Method and processor for drawing `polygon with edge`-type primitives in a computer graphics display system. International Business Machines Corporation, Mark S Walker, William A Kinnaman, November 23, 1993: US05265198 (7 worldwide citation)

In a computer graphics display system, a method and processor are disclosed for drawing a `polygon with edge`-type primitive encountered in certain high level graphics interface programs. Both the method and processor use a mask buffer organized into a plurality of addressable constituent pixels, ea ...