Issued Patents All Time
Showing 26–50 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078624 | Judging method and a precoding apparatus | Noboru Kawada, Hideo Miyazawa, Yuri Nigaki | 2000-06-20 |
| 6052037 | Modulation method and apparatus | Hideo Miyazawa | 2000-04-18 |
| 6044109 | Modem signal transmitter, modem signal transmitting method, modem signal receiver, modem signal receiving method, modem signal transmitting/receiving system and modem signal transmitting/receiving method | Ryoji Okita | 2000-03-28 |
| 6026122 | Process and system for transferring vector signal with precoding for signal power reduction | Kyoko Hirao, Hideo Miyazawa | 2000-02-15 |
| 6021160 | Training method for non-nyquist transmission system and training data transmission apparatus for non-nyquist transmission system | Noboru Kawada, Yuri Nigaki | 2000-02-01 |
| 6009123 | Process and system for transferring vector signal with precoding for signal power reduction | Kyoko Hirao, Hideo Miyazawa | 1999-12-28 |
| 6002712 | Timing phase control apparatus and timing phase control method | Noboru Kawada, Hideo Miyazawa | 1999-12-14 |
| 6002724 | Transmission apparatus and control method therefor | Takeshi Asahina, Toyomi Obikawa, Ryoji Okita | 1999-12-14 |
| 5987064 | Eye pattern display method, eye pattern display apparatus, and communications apparatus | Hideo Miyazawa | 1999-11-16 |
| 5974090 | Special eye pattern and modulation and demodulation method using the same | Kyoko Hirao, Hiroyasu Murata | 1999-10-26 |
| 5963593 | Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device | Noboru Kawada, Hideo Miyazawa, Yuri Nigaki | 1999-10-05 |
| 5896420 | Transmission apparatus having echo cancellation facility | Takeshi Asahina, Toyomi Obikawa, Ryoji Okita | 1999-04-20 |
| 5825818 | Apparatus and method of recovering a timing signal in a transmission apparatus by adjusting tap coefficients | Ryoji Okita | 1998-10-20 |
| 5757865 | Carrier phase control circuit | Noboru Kawada, Hideo Miyazawa | 1998-05-26 |
| 5734681 | Process and system for transferring vector signal with precoding for signal power reduction | Kyoko Hirao, Hideo Miyazawa | 1998-03-31 |
| 5719907 | Phase jitter extraction circuit and phase jitter cancellation circuit | Hideo Miyazawa | 1998-02-17 |
| 5710754 | Multiplex transmission system wherein analog signal is transformed to base band random-transformed and superimposed on dispersed signal points in vector signal space | Ryoji Okita, Noboru Kawada | 1998-01-20 |
| 5694422 | Fixed equalizer and equalizing method | Hideo Miyazawa | 1997-12-02 |
| 5650953 | Reciprocal number arithmetic operating method and circuit which are used in modem | Hideo Miyazawa | 1997-07-22 |
| 5631923 | Two-wire full-duplex modem | Toyomi Obikawa | 1997-05-20 |
| 5625643 | Modulator and demodulator apparatus | Noboru Kawada | 1997-04-29 |
| 5598434 | Automatic equalizer with a branched input for improved accuracy | Ryoji Okita, Hideo Miyazawa | 1997-01-28 |
| 5598433 | Automatic equalizer and data mode convergence method | Kyoko Hirao | 1997-01-28 |
| 5583887 | Transmission signal processing apparatus | Hiroyasu Murata | 1996-12-10 |
| 5574737 | Modulator-demodulator device capable of detecting an unsynchronized frame state based on hard and soft error values | Yasunao Mizutani | 1996-11-12 |