Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11770289 | Communication device for transmitting data by using multilevel coding, and communication system | Toshihiro Konno, Junichi Sugiyama | 2023-09-26 |
| 11711247 | Signal processing device and transmission device | — | 2023-07-25 |
| 11552711 | Encoding device, decoding device, and transmission device | — | 2023-01-10 |
| 11418284 | Encoding circuit, decoding circuit, encoding method, and decoding method | Kiichi Sugitani | 2022-08-16 |
| 11283542 | Encoding circuit, decoding circuit, and encoding method | Kiichi Sugitani | 2022-03-22 |
| 10884706 | Randomization of data using a plurality of types of pseudorandom number generators | Tsuyoshi Atsumi, Yasuhiko Kurosawa, Yuji Nagai | 2021-01-05 |
| 10623137 | Transmission apparatus and error correction method | — | 2020-04-14 |
| 10459691 | Randomization of data using a plurality of types of pseudorandom number generators | Tsuyoshi Atsumi, Yasuhiko Kurosawa, Yuji Nagai | 2019-10-29 |
| 9825731 | Optical transmission system, optical transmission apparatus, and optical transmission method | Taizo Maeda, Ichiro Nakajima | 2017-11-21 |
| 9467318 | Communication system, receiving device, and semiconductor device | Daijiro Tanaka | 2016-10-11 |
| 9438461 | Communication system, receiving device, and semiconductor device | Daijiro Tanaka | 2016-09-06 |
| 8839070 | Error correction apparatus and error correction method | — | 2014-09-16 |
| 8705984 | Optical transmission apparatus and method for controlling variable optical attenuator | — | 2014-04-22 |
| 8705974 | Optical transmission system and optical transmission method | Masahiro Shioda, Osamu Takeuchi, Hayato Furukawa, Yasuhiko Aoki | 2014-04-22 |
| 7388711 | Controlling apparatus for optical amplifier and controlling method thereof | Masato Oota, Nobukazu Koizumi | 2008-06-17 |
| 7158290 | Controlling apparatus for optical amplifier and controlling method thereof | Masato Oota, Nobukazu Koizumi | 2007-01-02 |