Issued Patents All Time
Showing 101–118 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8571407 | Optical coherent receiver, apparatus for and method of monitoring performance thereof | Lei Li, Hisao Nakashima | 2013-10-29 |
| 8566073 | Simulation device and simulation method | Liang Dou, Shoichiro Oda | 2013-10-22 |
| 8532502 | Filter coefficient adjustment apparatus | Huijian Zhang, Takahito Tanimura | 2013-09-10 |
| 8514922 | Filter coefficient control apparatus and method | Lei Li, Ling Liu, Shoichiro Oda | 2013-08-20 |
| 8472814 | Apparatus and method for equalizing chromatic dispersion and digital coherent optical receiver | Huijian Zhang, Shoichiro Oda | 2013-06-25 |
| 8452192 | Apparatus and method for monitoring statistical characteristics of phase noises, and coherent optical communication receiver | Weizhen Yan, Shoichiro Oda | 2013-05-28 |
| 8442406 | Filter, coherent receiver device and coherent receiving method | Jianqiang Li, Huijian Zhang, Takahito Tanimura | 2013-05-14 |
| 8374512 | Frequency offset monitoring device and optical coherent receiver | Huijian Zhang, Takeshi Hoshida, Lei Li | 2013-02-12 |
| 8331496 | Phase recovery device, phase recovery method and receiver for 16 QAM data modulation | Meng Yan, Shoichiro Oda | 2012-12-11 |
| 8189718 | Adaptive optimization method and apparatus for average length | Lei Li, Hisao Nakashima | 2012-05-29 |
| 8103176 | Frequency offset compensating apparatus and method, and optical coherent receiver | Lei Li, Hisao Nakashima | 2012-01-24 |
| 8103177 | Apparatus and method for frequency offset monitoring used in digital coherent optical receiver | Huijian Zhang, Lei Li, Hisao Nakashima | 2012-01-24 |
| 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 |
| 7676162 | Phase monitor used in optical receiver | Akihiko Isomura, Jens Rasmussen, Noriaki Mizuguchi, Kenichi Kaburagi | 2010-03-09 |