Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10873410 | Reception device and method of detecting supervisory control signal | Yi Ge, Takeshi Hoshida, Hisao Nakashima, Yuichi Akiyama | 2020-12-22 |
| 10841035 | Transmission device, control device, and transmission method | — | 2020-11-17 |
| 10708035 | Signal processing device and signal processing method | Hisao Nakashima | 2020-07-07 |
| 10698228 | Transmission device, reception device, and transmission method | Hisao Nakashima | 2020-06-30 |
| 10567077 | Imbalance compensation device, transmission device, and imbalance compensation method | Takeshi Hoshida, Yoshitaka Nomura, Hisao Nakashima | 2020-02-18 |
| 10498459 | Optical transmitter and skew compensation method | Yoshitaka Nomura, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida | 2019-12-03 |
| 10439732 | Receiving device and phase-error compensation method | Takeshi Hoshida, Hisao Nakashima | 2019-10-08 |
| 10425166 | Optical transmitter, optical transmission apparatus, and optical modulation method | Tomohiro Yamauchi, Takahito Tanimura, GUOXIU HUANG, Takeshi Hoshida | 2019-09-24 |
| 10277328 | Signal processing device used in optical receiver and signal processing method | Hisao Nakashima, Yoshitaka Nomura, Takeshi Hoshida, Takahito Tanimura | 2019-04-30 |
| 10219049 | Optical reception apparatus, optical transmission apparatus, optical communication system, and skew adjusting method | Yoshitaka Nomura, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida | 2019-02-26 |
| 10090927 | Digital signal processing circuit and signal processing device that includes a plurality of digital signal processing circuits | Hisao Nakashima, Yoshitaka Nomura, Yi Ge, Yuichi Akiyama, Yoshio Hirose +1 more | 2018-10-02 |
| 9667347 | Optical transmitter, optical receiver, method of compensating non-linear distortion, and communication apparatus | Takeshi Hoshida, Hisao Nakashima | 2017-05-30 |
| 9654224 | Optical transmission device, nonlinear distortion compensation method, and nonlinear distortion pre-equalization method | Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima, Yuichi Akiyama | 2017-05-16 |
| 9634764 | Estimating device and method for estimating | Hisao Nakashima | 2017-04-25 |
| 9363014 | Non-linear distortion compensator, method of compensating non-linear distortion, and optical receiver | Takahito Tanimura, Hisao Nakashima | 2016-06-07 |
| 9143260 | Optical transmission system, method of adjusting optical transmission device, and non-transitory computer-readable medium | Takeshi Hoshida, Hisao Nakashima | 2015-09-22 |
| 9094121 | Optical transmission apparatus | Takeshi Hoshida, Hisao Nakashima | 2015-07-28 |