Stephen C. Purcell
92Patents
27h-index
52Co-inventors
91Inventor score
Filing activity: Aug 23, 1990 → Aug 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5253078A | System for compression and decompression of video data using discrete cosine transform and coding techniques | Electricity | 286 | Expired |
| US7661107B1 | Method and apparatus for dynamic allocation of processing resources | Physics | 183 | Expired |
| US5815646A | Decompression processor for video applications | Electricity | 135 | Expired |
| US7013456B1 | Profiling execution of computer programs | Physics | 123 | Expired |
| US6836815B1 | Layered crossbar for interconnection of multiple processors and shared memories | Physics | 117 | Expired |
| US5379356A | Decompression processor for video applications | Electricity | 113 | Expired |
| US5568167A | System for providing antialiased video overlays | Electricity | 87 | Expired |
| US6763452B1 | Modifying program execution based on profiling | Physics | 85 | Expired |
| US6449671B1 | Method and apparatus for busing data elements | Physics | 82 | Expired |
| US8121828B2 | Detecting conditions for transfer of execution from one computer instruction stream to another and executing transfer on satisfaction of the conditions | Physics | 77 | Active |
| US6978462B1 | Profiling execution of a sequence of events occuring during a profiled execution interval that matches time-independent selection criteria of events to be profiled | Physics | 64 | Expired |
| US5598514A | Structure and method for a multistandard video encoder/decoder | Electricity | 63 | Expired |
| US5598483A | MPEG video decompression processor | Electricity | 62 | Expired |
| US7234018B1 | Layered crossbar for interconnection of multiple processors and shared memories | Physics | 55 | Expired |
| US7830379B2 | Architectures for parallelized intersection testing and shading for ray-tracing rendering | Physics | 47 | Active |
| US6122442A | Structure and method for motion estimation of a digital image by matching derived scores | Electricity | 46 | Expired |
| US5864704A | Multimedia processor using variable length instructions with opcode specification of source operand as result of prior instruction | Physics | 44 | Expired |
| US5630033A | Adaptic threshold filter and method thereof | Electricity | 39 | Expired |
| US5870497A | Decoder for compressed video signals | Electricity | 38 | Expired |
| US5586070A | Structure and method for embedding two small multipliers in a larger multiplier | Physics | 38 | Expired |
| US5608888A | Method and apparatus for mapping data of a 2-dimensional space from a linearly addressed memory system | Electricity | 35 | Expired |
| US8204596B2 | Isolation connector for an intravascular implantable medical device | Human Necessities | 32 | Active |
| US5740340A | 2-dimensional memory allowing access both as rows of data words and columns of data words | Electricity | 32 | Expired |
| US5477543A | Structure and method for shifting and reordering a plurality of data bytes | Physics | 31 | Expired |
| US6071004A | Non-linear digital filters for interlaced video signals and method thereof | Electricity | 31 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.