Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9019017 | Digitally controlled oscillator and digital PLL including the same | Win Chaivipas, Daisuke Yamazaki | 2015-04-28 |
| 8432193 | Divider and mixer circuit having the same | — | 2013-04-30 |
| 7965808 | Frequency dividing device | — | 2011-06-21 |
| 7795925 | Phase difference detector and phase difference detection method | — | 2010-09-14 |
| 7750747 | Clock selection circuit and synthesizer | — | 2010-07-06 |
| 7388416 | Latch circuit, 4-phase clock generator, and receiving circuit | — | 2008-06-17 |
| 7324758 | Optical dispersion monitoring apparatus and optical dispersion monitoring method, and optical transmission system using same | Takuji Yamamoto | 2008-01-29 |
| 7187217 | Clock frequency divider and trigger signal generation circuit for same | — | 2007-03-06 |
| 7027741 | Phase lock loop circuit and optical repeating apparatus, optical terminal apparatus, and optical communication system having the same | Takuji Yamamoto, Naoki Kuwata, Katsuya Yamashita | 2006-04-11 |