Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7256718 | Modulation apparatus and method | Toshiyuki Nakagawa, Minoru Tobita | 2007-08-14 |
| 7120105 | Recording medium, reproducing apparatus, and recording apparatus | Toshiyuki Nakagawa, Takanori Takemoto | 2006-10-10 |
| 6982660 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Minoru Tobita | 2006-01-03 |
| 6965329 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Minoru Tobita | 2005-11-15 |
| 6958713 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Minoru Tobita | 2005-10-25 |
| 6950042 | Modulating apparatus and method, and DSV control bit producing method | Toshiyuki Nakagawa, Minoru Tobita | 2005-09-27 |
| 6914544 | Modulation apparatus and method and DSV control bit generation method | Toshiyuki Nakagawa, Minoru Tobita | 2005-07-05 |
| 5818805 | Reproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge | Seiji Kobayashi, Hisayuki Yamatsu, Toshiyuki Kashiwagi | 1998-10-06 |
| 5809004 | Information recording medium with pits edges shifted in a step-wise fashion | Seiji Kobayashi, Hisayuki Yamatsu | 1998-09-15 |
| 5748582 | Information recording medium wherein digital symbols are represented by discrete shift amounts of a pit edge and tracking wobbling pits are shared between adjacent tracks and information recording and reproducing apparatus therefor | Seiji Kobayashi, Hisayuki Yamatsu, Toshiyuki Kashiwagi | 1998-05-05 |
| 5724330 | Information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge, recording apparatus, reproducing apparatus, and recording and reproducing apparatus therefor | Seiji Kobayashi, Hisayuki Yamatsu, Toshiyuki Kashiwagi | 1998-03-03 |
| 5615193 | Information recording apparatus and process for recording on a recording medium with pit edges shifted in a step-wise fashion | Seiji Kobayashi, Hisayuki Yamatsu | 1997-03-25 |
| 5566158 | Information recording medium and a recording apparatus and a reproducing apparatus therefor | Seiji Kobayashi, Hisayuki Yamatsu | 1996-10-15 |
| 5557592 | Reproducing apparatus for reproducing information from a recording medium with pit edges shifted in a step-wise fashion | Selji Kobayashi, Hisayuki Yamatsu | 1996-09-17 |
| 5450381 | Magneto-optical recording utilizing signal phase adjustment | Yoshihiro Tsukamura, Seiji Kobayashi | 1995-09-12 |