David A. Kummer
113Patents
19h-index
53Co-inventors
89Inventor score
Filing activity: Sep 18, 1978 → Feb 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8156520B2 | Methods and apparatus for presenting substitute content in an audio/video stream using text data | Electricity | 268 | Active |
| US5790202A | Integration of off-air and satellite TV tuners in a direct broadcast system | Electricity | 255 | Expired |
| US5325499A | Computer system including a write protection circuit for preventing illegal write operations and a write poster with improved memory | Physics | 79 | Expired |
| US8024753B1 | Method and apparatus for parental control | Electricity | 45 | Active |
| US8660412B2 | System and method for dynamically adjusting recording parameters | Electricity | 43 | Active |
| US8606088B2 | System and method for memory jumping within stored instances of content | Electricity | 42 | Active |
| US8774608B2 | System and method for memory jumping within stored instances of content | Electricity | 41 | Active |
| US8819722B2 | Smartcard encryption cycling | Electricity | 40 | Active |
| US8989562B2 | Facilitating concurrent recording of multiple television channels | Electricity | 36 | Active |
| US8959544B2 | Descrambling of multiple television channels | Electricity | 35 | Active |
| US8959566B2 | Storing and reading multiplexed content | Electricity | 35 | Active |
| US8380050B2 | Recording extension of delayed media content | Electricity | 33 | Active |
| US9565474B2 | Media content crowdsource | Electricity | 31 | Active |
| US8430302B2 | Enabling interactive activities for content utilizing matrix codes | Electricity | 31 | Active |
| US4658350A | Extended addressing apparatus and method for direct storage access devices | Physics | 29 | Expired |
| US9185331B2 | Storing multiple instances of content | Electricity | 26 | Active |
| US9860477B2 | Customized video mosaic | Electricity | 26 | Active |
| US4437092A | Color video display system having programmable border color | Physics | 24 | Expired |
| US4556952A | Refresh circuit for dynamic memory of a data processor employing a direct memory access controller | Physics | 20 | Expired |
| US4495594A | Synchronization of CRT controller chips | Physics | 19 | Expired |
| US9350937B2 | System and method for dynamically adjusting recording parameters | Electricity | 18 | Active |
| US4442428A | Composite video color signal generation from digital color signals | Physics | 17 | Expired |
| US4580135A | Raster scan display system | Physics | 17 | Expired |
| US9927839B2 | Communications device with extendable screen | Electricity | 16 | Active |
| US6151479A | Single clock 27 MHZ oscillator in MPEG-2 system | Electricity | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.