Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9081677 | Method and device for estimating input bit error ratio | Yoshikuni Miyata, Kenya Sugihara, Kiyoshi Onohara, Kazuo Kubo, Hideo Yoshida | 2015-07-14 |
| 9036995 | Optical communication system | Toshiyuki Tokura, Kazuyuki Ishida | 2015-05-19 |
| 8977927 | Error-correction coding method, error-correction decoding method, error-correction coding apparatus, and error-correction decoding apparatus | Yoshikuni Miyata, Hideo Yoshida, Kazuo Kubo | 2015-03-10 |
| 8909066 | Optical transfer system, optical transmission device, and optical reception device | Tsuyoshi Yoshida, Takashi Sugihara, Kazuyuki Ishida | 2014-12-09 |
| 8805198 | Optical transmission and reception system, optical transmitting and receiving apparatus, and optical transmission and reception method | — | 2014-08-12 |
| 8718487 | Optical transmitter | Takashi Sugihara, Soichiro Kametani, Yoshiaki Konishi | 2014-05-06 |
| 8693864 | Optical network system, optical redundant switching apparatus, and WDM apparatus | Kazuo Kubo, Yuji Akiyama | 2014-04-08 |
| 8645806 | Optical receiving apparatus and optical receiving method | Takashi Sugihara, Kazuo Kubo | 2014-02-04 |
| 8621316 | Method and device for encoding of error correcting codes, and method and device for decoding of error correcting codes | Yoshikuni Miyata, Hideo Yoshida, Kazuo Kubo | 2013-12-31 |
| 8495475 | FEC frame structuring device and FEC frame structuring method | Kazuo Kubo, Takashi Sugihara | 2013-07-23 |
| 8478089 | Optical switch and optical-switch control method | Yuji Akiyama | 2013-07-02 |
| 8463138 | Multi-value optical transmitter | Takashi Sugihara, Soichiro Kametani | 2013-06-11 |
| 8402339 | Error correcting device and error correcting method | Kazuo Kubo, Hideo Yoshida, Yoshikuni Miyata | 2013-03-19 |
| 8396374 | Digital signal processing optical transmission apparatus | Yoshiaki Konishi, Tatsuya Kobayashi | 2013-03-12 |
| 7917833 | Communication apparatus, transmitter, receiver, and error correction optical communication system | Naoki Suzuki, Seiji Kozaki | 2011-03-29 |
| 7809281 | Optical transmitter | Kazuyuki Ishida, Kaoru Kinjo | 2010-10-05 |
| 7505695 | Optical receiver and optical transmission system | Takashi Sugihara, Hirofumi Totsuka | 2009-03-17 |
| 7379671 | Optical transmitter | Kenkichi Shimomura, Takashi Sugihara | 2008-05-27 |
| 7302188 | Disperse equalizer and disperse equalizing method | Takashi Sugihara | 2007-11-27 |
| 7269349 | Method of and device for performing bi-directional transmission using a single-wire | Kaoru Kinjo, Satoshi Kajiya | 2007-09-11 |
| 7239673 | Optical reception apparatus | Kazushige Sawada, Kazuo Kubo, Hideo Yoshida, Hachiro Fujita, Katsuhiro Shimizu +1 more | 2007-07-03 |
| 7236703 | Optical wavelength division multiplexing device | Shigeo Yamanaka, Katsuhiro Shimizu, Koji Goto, Shinichi Nakagawa, Eiichi Shibano +1 more | 2007-06-26 |
| 7158728 | Optical repeating system and optical amplifying repeater control method | Yasunori Kasahara, Hideki Goto, Kenkichi Shimomura, Yukio Horiuchi, Masatoshi Suzuki +2 more | 2007-01-02 |
| 7130544 | Optical repeating system and optical amplifying repeater control method | Yasunori Kasahara, Hideki Goto, Kenkichi Shimomura, Masatoshi Suzuki, Yukio Horiuchi +2 more | 2006-10-31 |
| 7110681 | Method and apparatus for optical transmission | — | 2006-09-19 |