Issued Patents 2011
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8086114 | Filter coefficient changing apparatus and method | Ling Liu, Takahito Tanimura | 2011-12-27 |
| 8078066 | Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver | Lei Li, Hisao Nakashima | 2011-12-13 |
| 7970290 | Digital phase estimator, digital phase locked loop and optical coherent receiver | Lei Li, Jens Rasmussen | 2011-06-28 |
| 7953328 | Optical DQPSK transmitter phase monitor and control | Jens Rasmussen | 2011-05-31 |
| 7877025 | Phase monitor apparatus, phase control apparatus and methods thereof for optical DQPSK receiver | Jens Rasmussen, Akihiko Isomura | 2011-01-25 |