Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7269215 | Equalization processing method and the apparatus for periodic fluctuation of transmission line characteristic | Takashi Kaku | 2007-09-11 |
| 7113557 | Noise canceling method and apparatus | Takashi Kaku | 2006-09-26 |
| 7114120 | Data processing apparatus and data processing method | — | 2006-09-26 |
| 6968497 | Error correction device and error correction method | Takashi Kaku | 2005-11-22 |
| 6411650 | PLL control method in data receiving apparatus | — | 2002-06-25 |
| 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, Noboru Kawada | 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, Noboru Kawada | 2001-08-28 |
| 6282246 | Frequency modulation method and modem unit employing such method | Takashi Kaku | 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, Noboru Kawada | 2001-05-01 |
| 6052410 | Transmission apparatus, reception apparatus and communication apparatus as well as modem signal transmission and reception method | — | 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 | Takashi Kaku | 2000-03-28 |
| 6002724 | Transmission apparatus and control method therefor | Takashi Kaku, Takeshi Asahina, Toyomi Obikawa | 1999-12-14 |
| 5896420 | Transmission apparatus having echo cancellation facility | Takashi Kaku, Takeshi Asahina, Toyomi Obikawa | 1999-04-20 |
| 5825818 | Apparatus and method of recovering a timing signal in a transmission apparatus by adjusting tap coefficients | Takashi Kaku | 1998-10-20 |
| 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, Noboru Kawada | 1998-01-20 |
| 5689513 | Data transmission system having a backup testing facility | Tohru Ogawa, Michiko Kawada | 1997-11-18 |
| 5598434 | Automatic equalizer with a branched input for improved accuracy | Takashi Kaku, Hideo Miyazawa | 1997-01-28 |
| 5406564 | Communication line backup system | — | 1995-04-11 |
| 4630126 | Method of signal transmission with selected signal transmission rate | Takashi Kaku, Masayoshi Inoue, Shozo Kudo | 1986-12-16 |