Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8989572 | Optical path establishing method and optical node apparatus | Takeshi Hoshida, Hisao Nakashima | 2015-03-24 |
| 8965202 | Optical power monitor, optical power control system and optical power monitor method | Kyosuke Sone, Yasuhiko Aoki, Toshiki Tanaka, Shoichiro Oda | 2015-02-24 |
| 8942569 | Optical transmission/reception system, optical transmitter, optical receiver, and optical transmission/reception method | Takeshi Hoshida, Hisao Nakashima | 2015-01-27 |
| 8934789 | Optical receiver, optical reception method and optical reception system | Kiichi Sugitani, Kazunari Shiota, Eri Katayama | 2015-01-13 |
| 8923708 | Signal processing device and optical receiving device | — | 2014-12-30 |
| 8849128 | Multi-wavelength light source | Shoichiro Oda, Takeshi Hoshida, Toshiki Tanaka, Tomoo Takahara | 2014-09-30 |
| 8805207 | Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system | Takeshi Hoshida, Hisao Nakashima, Shoichiro Oda | 2014-08-12 |
| 8798477 | Chromatic dispersion monitor and method, chromatic dispersion compensator | Ling Liu, Zhenning Tao | 2014-08-05 |
| 8787437 | Adaptive equalizer and method thereof | Ling Liu, Zhenning Tao | 2014-07-22 |
| 8768173 | Optical receiver and optical transmission system | Takeshi Hoshida | 2014-07-01 |
| 8744276 | Optical receiving apparatus and digital receiving circuit | Hisao Nakashima, Takeshi Hoshida, Lei Li, Ling Liu | 2014-06-03 |
| 8744278 | Method for electric power supply of optical receiver, digital signal processing circuit, and optical receiver | Shoichiro Oda, Takeshi Hoshida, Hisao Nakashima | 2014-06-03 |
| 8649689 | Digital coherent receiving apparatus | Nobukazu Koizumi, Takeshi Hoshida, Hisao Nakashima, Koji Nakamuta, Noriyasu Nakayama | 2014-02-11 |
| 8594508 | Optical transmission system | Hisao Nakashima, Takeshi Hoshida, Toru Katagiri, Shoichiro Oda | 2013-11-26 |
| 8532503 | Optical receiver and optical receiving method | Hisao Nakashima | 2013-09-10 |
| 8532502 | Filter coefficient adjustment apparatus | Huijian Zhang, Zhenning Tao | 2013-09-10 |
| 8515277 | Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion | Hisao Nakashima, Takeshi Hoshida | 2013-08-20 |
| 8488975 | Optical transmitter, optical transmitter and receiver system, optical transmitting method and optical transmitting and receiving method | Shoichiro Oda, Takeshi Hoshida | 2013-07-16 |
| 8447190 | Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system | Takeshi Hoshida, Hisao Nakashima, Kazunari Shiota, Kiichi Sugitani | 2013-05-21 |
| 8447186 | Distortion compensator, optical receiver, distortion compensator and optical receiver controlling methods, and optical transmission system | Takeshi Hoshida, Hisao Nakashima, Shoichiro Oda | 2013-05-21 |
| 8442406 | Filter, coherent receiver device and coherent receiving method | Jianqiang Li, Huijian Zhang, Zhenning Tao | 2013-05-14 |
| 8391725 | Optical receiver for controlling wavelength of local oscillation light and local oscillation light control method | Shoichiro Oda, Takeshi Hoshida, Hisao Nakashima | 2013-03-05 |
| 8380084 | Polarization multiplexing and transmitting apparatus | Takeshi Hoshida | 2013-02-19 |
| 8351795 | Optical transmission system and optical transmission method | Hisao Nakashima, Takeshi Hoshida, Toru Katagiri, Shoichiro Oda | 2013-01-08 |
| 8249464 | Optical receiver and method for optical reception | Shoichiro Oda, Takeshi Hoshida, Hisao Nakashima, Yuichi Akiyama | 2012-08-21 |