| 7359316 |
Reception pointer processing apparatus in SDH transmission system |
Kenji Fukunaga, Takumi Iwai, Kazuo Takatsu |
2008-04-15 |
| 6895182 |
Optical ring transmission system using squelch method |
Junichi Moriyama, Tsutomu Chikazawa, Yoshihisa Ikeda, Takanori Yasui, Masahiro Shioda |
2005-05-17 |
| 6763038 |
Light transmission equipment |
Nobuhiko Usui, Koji Matsunaga, Masayuki Maehira, Tatsuya Toyozumi, Yumiko Ogata +1 more |
2004-07-13 |
| 6728925 |
Error correcting method and apparatus |
Junichi Ishiwatari, Masahiro Shioda, Takashi Kuwabara, Yukio Yamazaki |
2004-04-27 |
| 6674771 |
Transmission method and apparatus for transmitting low-speed SDH signals using a high-speed SDH frame |
— |
2004-01-06 |
| 6496518 |
SDH transmission system, and frame transmission method in SDH transmission system and SDH transmission unit |
— |
2002-12-17 |
| 6456587 |
Ring transmission system and squelch method used for same |
— |
2002-09-24 |
| 6337848 |
Path switching device for transmission apparatus |
Kazuo Takatsu |
2002-01-08 |
| 6130764 |
Transmission apparatus in ring network |
— |
2000-10-10 |
| 6122250 |
Ring transmission system and squelch method used for same |
— |
2000-09-19 |
| 6118795 |
Reception pointer processing apparatus in SDH transmission system |
Kenji Fukunaga, Takumi Iwai, Kazuo Takatsu |
2000-09-12 |
| 5909175 |
Connection switching circuit for ring system |
Shosaku Yamasaki, Kazuo Takatsu |
1999-06-01 |
| 5867544 |
Phase-locked loop oscillator, and moving-average circuit, and division-ratio equalization circuit suitable for use in the same |
— |
1999-02-02 |
| 5844889 |
Different system transfer method for a ring transmission system and transmission apparatus |
Kazuo Takatsu |
1998-12-01 |
| 5534822 |
Parallel phase-locked loop oscillator circuits with average frequency calculation of input stage loop |
Chiyoko Yamamoto |
1996-07-09 |
| 5319637 |
Synchronous control method in plurality of channel units and circuit using said method |
Satoshi Takeda, Norihisa Miura |
1994-06-07 |
| 5099477 |
Phase matching circuit |
Haruo Yamashita, Tomohiro Ishihara, Takaaki Wakisaka |
1992-03-24 |
| 5056120 |
Phase adjusting circuit |
Nobuhiro Fujimoto, Tomohiro Ishihara, Takaaki Wakisaka |
1991-10-08 |
| 5020057 |
Easy detection of head position of information data via reception processing unit in synchronous multiplex transmission apparatus |
Haruo Yamashita, Tomohiro Ishihara, Takaaki Wakisaka |
1991-05-28 |
| 4935920 |
Drop/insert processing circuit |
Tomoyuki Ohtsuka, Hidetoshi Naitou, Ryuichi Kondo |
1990-06-19 |
