Ralph D. Hill
16Patents
11h-index
18Co-inventors
69Inventor score
Filing activity: Jul 13, 1994 → Aug 30, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7233948B1 | Methods and apparatus for persistent control and protection of content | Emerging Cross-Sectional Technologies | 369 | Expired |
| US5594911A | System and method for preprocessing and delivering multimedia presentations | Electricity | 82 | Expired |
| US6005600A | High-performance player for distributed, time-based media | Electricity | 74 | Expired |
| US7055039B2 | Protection of digital content using block cipher crytography | Electricity | 65 | Expired |
| US5577258A | Apparatus and method for preprocessing multimedia presentations to generate a delivery schedule | Electricity | 51 | Expired |
| US8526610B2 | Methods and apparatus for persistent control and protection of content | Electricity | 40 | Active |
| US5696948A | Apparatus for determining round trip latency delay in system for preprocessing and delivering multimedia presentations | Electricity | 33 | Expired |
| US8130952B2 | Methods and apparatus for persistent control and protection of content | Electricity | 28 | Active |
| US6792468B1 | Frame-accurate transport of media data across a data network | Electricity | 19 | Expired |
| US7448062B1 | Seamless playback of multiple clips of media data across a data network | Electricity | 17 | Expired |
| US5706486A | Method for preprocessing multimedia presentations to generate a delivery schedule | Electricity | 11 | Expired |
| US7822201B2 | Methods and apparatus for persistent control and protection of content | Electricity | 10 | Active |
| US7809138B2 | Methods and apparatus for persistent control and protection of content | Electricity | 6 | Active |
| US9532005B2 | Methods and apparatus for persistent control and protection of content | Electricity | 3 | Active |
| US7979860B2 | Method for estimating cost when placing operations within a modulo scheduler when scheduling for processors with a large number of function units or reconfigurable data paths | Physics | 3 | Active |
| US7093255B1 | Method for estimating cost when placing operations within a modulo scheduler when scheduling for processors with a large number of function units or reconfigurable data paths | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.