Andrew L. Norrell
42Patents
18h-index
30Co-inventors
81Inventor score
Filing activity: Mar 25, 1993 → Nov 19, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5705949A | Compensation method for I/Q channel imbalance errors | Electricity | 175 | Expired |
| US6084883A | Efficient data transmission over digital telephone networks using multiple modulus conversion | Electricity | 163 | Expired |
| US5528595A | Modem input/output signal processing techniques | Electricity | 127 | Expired |
| US7194023B2 | Loop extender with communications, control, and diagnostics | Electricity | 109 | Expired |
| US6853637B1 | Converged home gateway | Electricity | 94 | Expired |
| US5646983A | Host computer digital signal processing system for communicating over voice-grade telephone channels | Electricity | 85 | Expired |
| US5912888A | Digital network access server | Electricity | 77 | Expired |
| US6965636B1 | System and method for block error correction in packet-based digital communications | Electricity | 52 | Expired |
| US7190716B2 | Line powered loop extender with communications, control, and diagnostics | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6507608B1 | Multi-line ADSL modulation | Electricity | 47 | Expired |
| US7068649B2 | Extended bandwidth homePNA system compatible with homePNA 2.0 | Electricity | 47 | Expired |
| US6529549B1 | System and method for an equalizer-based symbol timing loop | Electricity | 45 | Expired |
| US5793821A | Timing Recovery using group delay compensation | Electricity | 34 | Expired |
| US6034993A | Method and apparatus for adaptively equalizing a signal received from a remote transmitter | Electricity | 33 | Expired |
| US6115395A | Method of detecting network impairments for high speed data communication over conventional subscriber lines | Electricity | 28 | Expired |
| US6285709A | Error filtering in a hybrid equalizer system | Electricity | 24 | Expired |
| US5724413A | Host computer digital signal processing system for communicating over voice-grade telephone channels | Electricity | 19 | Expired |
| US6690666B1 | Packet modulation for DSL | Electricity | 18 | Expired |
| US7023910B1 | Dual-line DSL system and method | Electricity | 16 | Expired |
| US6636519B1 | Network access method and network access server therefor | Electricity | 15 | Expired |
| US5579305A | Asymmetric duplex modem utilizing narrow band echo cancellation | Electricity | 14 | Expired |
| US6097794A | Host computer digital signal processing system for communicating over voice-grade telephone channels | Electricity | 14 | Expired |
| US6874096B1 | Apparatus and method for detecting packet arrival time | Electricity | 12 | Expired |
| US5892757A | Asymmetric duplex modem utilizing narrow band echo cancellation | Electricity | 11 | Expired |
| US5999109A | Frame-based spectral shaping method and apparatus | Electricity | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.