Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7761071 | Variable gain amplifier, and AM-modulated signal reception circuit and detection circuit | Junichi Yanagihara, Takashi Taya | 2010-07-20 |
| 7239814 | Driving apparatus of a light-emitting device | — | 2007-07-03 |
| 7126419 | Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amplifier | — | 2006-10-24 |
| 6891900 | Demodulating circuit and optical receiving circuit | Sunao Mizunaga | 2005-05-10 |
| 6279139 | Transmission system | — | 2001-08-21 |
| 6023357 | Method for power saving in optical communication apparatus, optical communication apparatus and method for using thereof, and optical communication system | — | 2000-02-08 |
| 5875245 | High voltage detection circuit, bell signal detection circuit and non-ringing reception detection circuit | Tokuo Nakamura, Toshihiko Kotaka | 1999-02-23 |