Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6674592 | Demodulation method and demodulator | — | 2004-01-06 |
| 6654413 | Phase synchronization method for extended partial response, and phase synchronization circuit and read channel circuit using this method | — | 2003-11-25 |
| 6631490 | Encoding unit and decoding unit | — | 2003-10-07 |
| 6535345 | Signal processing apparatus and signal processing method | — | 2003-03-18 |
| 6122120 | Record reproduction apparatus | — | 2000-09-19 |
| 6003153 | Maximum likelihood detection method and information recording and reproducing apparatus | — | 1999-12-14 |
| 5917862 | Information reproducing apparatus and its automatic equalization maximum likelihood detecting method | — | 1999-06-29 |
| 5777566 | Encoding method for PRML system, method of and apparatus for demodulating code thereof, and PRML system | — | 1998-07-07 |
| 5774286 | Magnetic disk drive in which read data is demodulated using maximum likelihood detection method | — | 1998-06-30 |
| 5406427 | Clock generator for magnetic disk drive that switches between preamble and data portions | — | 1995-04-11 |
| 5373257 | Phase synchronization circuit having a loop filter including two voltage/current converters | — | 1994-12-13 |
| 5341386 | Viterbi equalizer and recording/reproducing device using the same | Hideto Furukawa | 1994-08-23 |
| 5014275 | Sequential decoder | Yuzo Ageno | 1991-05-07 |
| 4763328 | Viterbi decoder and method for testing the viterbi decoder | Atsushi Yamashita, Tadayoshi Katoh | 1988-08-09 |
| 4710746 | Sequential decoding device for decoding systematic code | Tadayoshi Katoh, Yuzo Ageno | 1987-12-01 |