Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448861 | PLL controller, method of PLL control, and limiter | Takashi Kaku, Takeshi Asahina, Tohru Ogawa, Hideo Miyazawa | 2002-09-10 |
| 6377647 | PLL circuit | Takashi Kaku, Hideo Miyazawa | 2002-04-23 |
| 6298036 | Multiplex transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space | Takashi Kaku, Ryoji Okita | 2001-10-02 |
| 6282237 | Multiple transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space | Takashi Kaku, Ryoji Okita | 2001-08-28 |
| 6226302 | Multiplex transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space | Takashi Kaku, Ryoji Okita | 2001-05-01 |
| 6078624 | Judging method and a precoding apparatus | Takashi Kaku, Hideo Miyazawa, Yuri Nigaki | 2000-06-20 |
| 6021160 | Training method for non-nyquist transmission system and training data transmission apparatus for non-nyquist transmission system | Takashi Kaku, Yuri Nigaki | 2000-02-01 |
| 6002712 | Timing phase control apparatus and timing phase control method | Takashi Kaku, Hideo Miyazawa | 1999-12-14 |
| 5963593 | Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device | Takashi Kaku, Hideo Miyazawa, Yuri Nigaki | 1999-10-05 |
| 5757865 | Carrier phase control circuit | Takashi Kaku, Hideo Miyazawa | 1998-05-26 |
| 5710754 | Multiplex transmission system wherein analog signal is transformed to base band random-transformed and superimposed on dispersed signal points in vector signal space | Takashi Kaku, Ryoji Okita | 1998-01-20 |
| 5648993 | Method and apparatus for synchronizing modem transmission by controlling a measured phase difference between an internal timing signal and a transmission timing signal | — | 1997-07-15 |
| 5625643 | Modulator and demodulator apparatus | Takashi Kaku | 1997-04-29 |
| 5563908 | Modulator and demodulator apparatus | Takashi Kaku | 1996-10-08 |
| 5537437 | Initialization equalization for modulation and demodulation using special training pattern | Takashi Kaku, Hiroyasu Murata, Kyoko Hirao, Hideo Miyazawa, Yuri Nigaki | 1996-07-16 |
| 5515429 | Backup apparatus against line defect and backup method against line defect | MICHIKO NARITA | 1996-05-07 |
| 5442656 | Timing extraction device and data transmission device using the timing extraction device | Takashi Kaku | 1995-08-15 |
| 5432786 | Modem for modulating and demodulating main signal and secondary signal with clock synchronized system and transforming secondary signal between start-stop system and clock-synchronized system | — | 1995-07-11 |
| 5388122 | Modulation and demodulation system | Yuri Nigaki | 1995-02-07 |