Daniel K. Chappell
37Patents
9h-index
23Co-inventors
75Inventor score
Filing activity: Sep 19, 1994 → Jul 11, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6425132B1 | Ingress testing of CATV system utilizing remote selection of CATV node | Electricity | 128 | Expired |
| US6961370B2 | Sweep method using digital signals | Electricity | 39 | Expired |
| US5585842A | CATV frequency sweep testing using RF transmitter to generate test signals | Electricity | 35 | Expired |
| US6313874A | Method and apparatus for direct detection of communication system leakage signals | Electricity | 31 | Expired |
| US5867206A | CATV frequency sweep testing using RF transmitter to generate test signals | Electricity | 21 | Expired |
| US6041076A | Digitally modulated CATV power measurement using undersampling | Electricity | 13 | Expired |
| US8154303B2 | Method for locating cable impairments | Physics | 12 | Active |
| US9838679B2 | Distance to fault measurements in cable TV networks | Electricity | 11 | Active |
| US7944848B2 | Upstream signal quality monitoring | Electricity | 9 | Active |
| US8548760B2 | Detecting nonlinearity in a cable plant and determining a cable length to a source of the nonlinearity | Physics | 8 | Active |
| US6160991A | CATV frequency sweep testing remote unit | Electricity | 7 | Expired |
| US8558552B2 | Home network characterization method and system | Electricity | 6 | Active |
| US9634722B2 | Cable network spectral measurement during upstream packet transmission | Electricity | 5 | Active |
| US9357163B2 | Characterizing ingress noise | Electricity | 3 | Active |
| US9350986B2 | Dual-port testing of a cable network | Electricity | 2 | Active |
| US10694177B2 | Distance to fault measurements in cable TV networks | Electricity | 2 | Active |
| US7961719B2 | End of line monitor using DOCSIS | Electricity | 2 | Active |
| US8310940B2 | Testing upstream cable channels | Electricity | 2 | Active |
| US11239924B2 | Per-channel modulation error ratio (MER) calibration and determination on a multi channel receiver | Electricity | 1 | Active |
| US10728595B2 | Upstream sweep test with sweep server signaling | Electricity | 1 | Active |
| US8189651B2 | Measuring Hum in a digital TV signal | Electricity | 1 | Active |
| US8312496B2 | Measuring the frequency response of a CATV network | Electricity | 0 | Active |
| US12218710B2 | Per-channel modulation error ratio (MER) calibration and determination on a multi channel receiver | Electricity | 0 | Active |
| US11218189B1 | Method and apparatus providing common path distortion (CPD) detection from a field instrument | Electricity | 0 | Active |
| US12034619B2 | Upstream signal leakage detection in high-split cable network | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.