Gilbert C. Sih
55Patents
22h-index
53Co-inventors
87Inventor score
Filing activity: Sep 25, 1992 → Jun 3, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5307405A | Network echo canceller | Electricity | 184 | Expired |
| US6665539B2 | Position location with low tolerance oscillator | Physics | 134 | Expired |
| US5920834A | Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system | Electricity | 128 | Expired |
| US5687229A | Method for controlling echo canceling in an echo canceller | Electricity | 107 | Expired |
| US5592548A | System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process | Electricity | 78 | Expired |
| US5546459A | Variable block size adaptation algorithm for noise-robust acoustic echo cancellation | Electricity | 71 | Expired |
| US5999828A | Multi-user wireless telephone having dual echo cancellers | Electricity | 63 | Expired |
| US5646991A | Noise replacement system and method in an echo canceller | Electricity | 58 | Expired |
| US5559881A | Network echo canceller | Electricity | 47 | Expired |
| US6557022B1 | Digital signal processor with coupled multiply-accumulate units | Physics | 43 | Expired |
| US6181911A | Simplified receiver with rotator for performing position location | Electricity | 42 | Expired |
| US7076225B2 | Variable gain selection in direct conversion receiver | Electricity | 40 | Expired |
| US6208292A | Position location with low tolerance oscillator | Physics | 40 | Expired |
| US6211820A | Call maintainance during position location | Physics | 37 | Expired |
| US7020180B2 | Method and apparatus for acquiring pilots over code space and frequency errors in a CDMA communication system | Electricity | 33 | Expired |
| US5790632A | Method and apparatus for echo canceling accounting for companding induced quantization error | Electricity | 30 | Expired |
| US5732134A | Doubletalk detection by means of spectral content | Electricity | 29 | Expired |
| US6324227A | Receiver for performing position location with efficient rotator | Physics | 27 | Expired |
| US6381569B1 | Noise-compensated speech recognition templates | Physics | 24 | Expired |
| US6323805A | Data boundary aware base station assisted position location | Physics | 24 | Expired |
| US5903862A | Method and apparatus for detection of tandem vocoding to modify vocoder filtering | Physics | 23 | Expired |
| US6704555B2 | Apparatus and method for calibrating local oscillation frequency in wireless communications | Electricity | 22 | Expired |
| US6608858B1 | Multipath doppler adjusted frequency tracking loop | Electricity | 22 | Expired |
| US5644596A | Method and apparatus for frequency selective adaptive filtering | Electricity | 22 | Expired |
| US5675644A | Method and apparatus for canceling echo accounting for delay variations | Electricity | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.