Inventor · Saratoga, CA, US

Walter E. Donovan

73Patents
17h-index
53Co-inventors
87Inventor score

Filing activity: Dec 19, 1994 → Apr 20, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US6181352A Graphics pipeline selectively providing multiple pixels or multiple textures Physics 90 Expired
US6333744A Graphics pipeline including combiner stages Physics 81 Expired
US5990903A Method and apparatus for performing chroma key, transparency and fog operations Physics 78 Expired
US5657478A Method and apparatus for batchable frame switch and synchronization operations Physics 63 Expired
US5767856A Pixel engine pipeline for a 3D graphics accelerator Physics 49 Expired
US6593923B1 System, method and article of manufacture for shadow mapping Physics 49 Expired
US7477205B1 Method and apparatus for displaying data from multiple frame buffers on one or more display devices Physics 38 Expired
US6975319B1 System, method and article of manufacture for calculating a level of detail (LOD) during computer graphics processing Physics 38 Expired
US6005580A Method and apparatus for performing post-process antialiasing of polygon edges Physics 35 Expired
US6995767B1 Trilinear optimization for texture filtering Physics 33 Expired
US6690372B2 System, method and article of manufacture for shadow mapping Physics 32 Expired
US6985151B1 Shader pixel storage in a graphics memory Physics 27 Expired
US6987517B1 Programmable graphics processor for generalized texturing Physics 24 Expired
US7599975B1 Decompression of compressed 16 bit data Electricity 23 Active
US8669999B2 Alpha-to-coverage value determination using virtual samples Physics 23 Active
US6954204B2 Programmable graphics system and method using flexible, high-precision data formats Physics 20 Expired
US7355603B2 Filtering unit for floating-point texture data Physics 18 Expired
US5594846A Perspective correction of texture in graphics by adaptive approximation Physics 17 Expired
US7053904B1 Position conflict detection and avoidance in a programmable graphics processor Physics 15 Expired
US7920749B1 Modified high dynamic range color decompression Electricity 15 Active
US7961195B1 Two component texture map compression Physics 15 Active
US7091979B1 Pixel load instruction for a programmable graphics processor Physics 14 Expired
US7136071B1 Method and apparatus for sampling non-power of two dimension texture maps Physics 13 Expired
US7274373B1 System, method and computer program product for providing arbitrary texture filtering Physics 12 Expired
US7109999B1 Method and system for implementing programmable texture lookups from texture coordinate sets Physics 11 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.