Akira Sogo
14Patents
6h-index
5Co-inventors
55Inventor score
Filing activity: Jul 19, 1988 → Feb 12, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6445320B1 | A/D conversion apparatus | Electricity | 25 | Expired |
| US5806037A | Voice synthesis system utilizing a transfer function | Physics | 20 | Expired |
| US5768316A | Mixing circuit utilizing N inputs and a number of decimation filters that is less than N | Electricity | 15 | Expired |
| US6732132B2 | Digital signal processor and digital signal processing system incorporating same | Physics | 15 | Expired |
| US7072429B1 | Filter coefficient setting technique for variable filtering process and variable sampling frequency conversion | Electricity | 8 | Expired |
| US5436932A | For performing amplitude-phase demodulation and viterbi decoding | Electricity | 7 | Expired |
| US5406632A | Method and device for correcting an error in high efficiency coded digital data | Physics | 6 | Expired |
| US5631586A | Sine-wave generator circuit | Physics | 5 | Expired |
| US6428671B1 | Method and apparatus for electro-coagulation printing and electrode control unit | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5451944A | Sampling frequency converter by linear interpolation | Electricity | 4 | Expired |
| US4884037A | FM demodulation circuit | Electricity | 2 | Expired |
| US5568517A | Decoding device for performing amplitude-phase demodulation and viterbi decoding | Electricity | 2 | Expired |
| US5230009A | Method for deciding region of PI/4 shift quadriphase shift keying modulated signals | Electricity | 0 | Expired |
| US6205459A | Digital signal processor and digital signal processing system incorporating same | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.