Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489909 | Method and apparatus for improving S/N ratio in digital-to-analog conversion of pulse density modulated (PDM) signal | Shigetoshi Nakao | 2002-12-03 |
| 6469648 | Digital-to analog-converting method and digital-to analog converter employing common weight generating elements | Shigetoshi Nakao | 2002-10-22 |