Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12040834 | Adaptive equalizer, adaptive equalization method, and optical communication system | Tomohiro Takamuku, Tsutomu Takeya, Tomoharu Senboku | 2024-07-16 |
| 12028109 | Adaptive equalizer, equalization method, and optical communication system | Tomohiro Takamuku, Tomoharu Semboku, Tsutomu Takeya | 2024-07-02 |
| 11611395 | Adaptive equalization device, adaptive equalization method, and communication device | Tomohiro Takamuku, Tsutomu Takeya, Kazuhito Takei, Katsuichi Oyama, Tomoharu Semboku | 2023-03-21 |
| 11323238 | Frame synchronization apparatus, optical communication apparatus, and frame synchronization method | Yasuyuki Endoh, Katsuichi Oyama, Masayuki Ikeda, Tsutomu Takeya, Etsushi Yamazaki +2 more | 2022-05-03 |
| 11201721 | Frame synchronization apparatus, optical communication apparatus, and frame synchronization method | Yasuyuki Endoh, Katsuichi Oyama, Masayuki Ikeda, Tsutomu Takeya, Etsushi Yamazaki +2 more | 2021-12-14 |
| 11121778 | Phase variation compensation device, phase variation compensation method and communication device | Tomohiro Takamuku, Tsutomu Takeya, Katsuichi Oyama, Hiroyuki Nouchi, Atsushi Suenaga | 2021-09-14 |
| 10880193 | Error correction device, error correction method, and communication device | Yasuyuki Endo, Etsushi Yamazaki, Katsuichi Oyama, Yasuharu Onuma, Masahito Tomizawa | 2020-12-29 |
| 10868617 | Chromatic dispersion compensation device, chromatic dispersion compensation method, and communication device | Etsushi Yamazaki, Yoshiaki Kisaka, Masahito Tomizawa | 2020-12-15 |
| 10841006 | Signal-to-noise ratio estimation method, optical transmission apparatus, and optical transmission system | Seiji Okamoto, Yoshiaki Kisaka, Kengo Horikoshi, Masahiro Suzuki | 2020-11-17 |
| 10742354 | Optical receiver, optical transmission device, and method for optical receiver | Masanori Nakamura, Akira Hirano | 2020-08-11 |
| 10651944 | Optical transmitter, optical receiver, optical data transmission system, optical transmission method, and optical reception method | Kengo Horikoshi, Seiji Okamoto, Asuka Matsushita, Fukutaro HAMAOKA, Yoshiaki Yamada +1 more | 2020-05-12 |
| 10608743 | Transmission characteristic compensation apparatus, transmission characteristic compensation method, and communication apparatus | Tomohiro Takamuku, Etsushi Yamazaki, Katsuichi Oyama, Yasuharu Onuma, Kazuhito Takei +3 more | 2020-03-31 |
| 10523335 | Known signal detection method | Yasuharu Onuma, Etsushi Yamazaki, Tomohiro Takamuku, Masahiro Tachibana, Masahito Tomizawa +1 more | 2019-12-31 |
| 10422719 | Chromatic dispersion estimating circuit, optical reception device and chromatic dispersion amount estimating method | Etsushi Yamazaki, Tomohiro Takamuku, Yuki Yoshida, Koki Shibahara, Kengo Horikoshi +1 more | 2019-09-24 |
| 10389452 | Coherent optical reception device | Kengo Horikoshi, Seiji Okamoto, Eiichi Hosoya, Etsushi Yamazaki, Yasuharu Onuma +3 more | 2019-08-20 |
| 10374718 | Optical transmission distortion compensation device, optical transmission distortion compensation method, and communication device | Yasuharu Onuma, Etsushi Yamazaki, Hiroyuki Nouchi, Tomohiro Takamuku, Katsuichi Oyama +3 more | 2019-08-06 |
| 10171173 | Optical signal transmission apparatus and optical signal transmission method | Seiji Okamoto, Koichi Ishihara, Etsushi Yamazaki, Tomoyoshi Kataoka, Kazushige Yonenaga +3 more | 2019-01-01 |
| 10128818 | Data processor, data processing method and communication device | Yasuharu Onuma, Etsushi Yamazaki, Kazuhito Takei, Osamu Ishida, Kengo Horikoshi +2 more | 2018-11-13 |
| 10038507 | Optical transmission system, phase compensation method, and optical reception apparatus | Etsushi Yamazaki, Seiji Okamoto, Hiroyuki Uzawa, Kengo Horikoshi, Koichi Ishihara +6 more | 2018-07-31 |
| 9667350 | Optical receiving device and phase cycle reduction method | Kengo Horikoshi, Kohki Shibahara, Etsushi Yamazaki, Koichi Ishihara, Takayuki Kobayashi +4 more | 2017-05-30 |