Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466530 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2002-10-15 |
| 6438079 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2002-08-20 |
| 6396799 | Optical disk drive device using an optical disk having a continuous information track formed of alternating land/groove revolutions | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 2002-05-28 |
| 6396798 | Optical disc with a rewritable area and a read-only area | Yoshinari Takemura, Shunji Ohara, Takashi Ishida, Isao Satoh, Kazuhiko Nakane +1 more | 2002-05-28 |
| 6337845 | Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2002-01-08 |
| 6334021 | Specially formatted optical disk and method of playback | — | 2001-12-25 |
| 6275466 | Optical disk and optical disk drive device | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 2001-08-14 |
| 6236637 | Optical disk and optical disk drive device | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 2001-05-22 |
| 6201775 | Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2001-03-13 |
| 6167190 | Specially formatted optical disk and method of playback | — | 2000-12-26 |
| 6147961 | Optical disk and optical disk drive device | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 2000-11-14 |
| 6134382 | Digital video signal record and playback device and method for giving priority to a center of an I frame | Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi +4 more | 2000-10-17 |
| 6091699 | Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method | Kazuhiko Nakane, Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2000-07-18 |
| 6069869 | Optical disk and optical disk drive device | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 2000-05-30 |
| 6009236 | Digital video signal record and playback device and method for giving priority to a center of an I frame | Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi +4 more | 1999-12-28 |
| 5947402 | Magnetic recording and reproducing apparatus for controlling the tension of a magnetic tape | Eiji Yokoyama, Kazuo Mori, Seiji Kishikawa, Masami Tomita, Nobuzumi Kurihara | 1999-09-07 |
| 5946285 | Optical disk having a continuous information track formed of alternating land and groove track revolutions and a method of tracking the optical disk | Kazuhiko Nakane, Hiroyuki Ohata, Masayoshi Shimamoto, Kouichi Komawaki, Kenji Gotoh +1 more | 1999-08-31 |
| 5936932 | Optical recording medium having ID part shifting from the center of groove tracks | Kazuhiko Nakane, Hiroyuki Ohata, Kenji Gotoh, Yoshinobu Ishida | 1999-08-10 |
| 5933410 | Optical disc and optical disc driving apparatus | Kazuhiko Nakane, Hiroyuki Ohata, Kenji Gotoh, Yoshinobu Ishida, Isao Satoh +3 more | 1999-08-03 |
| 5923640 | Optical disc with a rewritable area and a read-only area | Yoshinari Takemura, Shunji Ohara, Takashi Ishida, Isao Satoh, Kazuhiko Nakane +1 more | 1999-07-13 |
| 5892740 | Optical disk drive and optical disk having address pits for sectors in land and groove tracks | Kouichi Komawaki, Tsuyoshi Katayama | 1999-04-06 |
| 5867474 | Optical disk having a continuous information track formed of alterating land/groove revolutions and optical disk drive | Kazuhiko Nakane, Tsuyoshi Katayama, Kouichi Komawaki | 1999-02-02 |
| 5859820 | Optical disk drive and optical disk having a continuous information track formed of alternating land and groove revolutions | Kouichi Komawaki, Yoshinobu Ishida, Tsuyoshi Katayama | 1999-01-12 |
| 5848050 | Optical disk having a continuous recording track formed of alternating land and groove revolutions | Kazuhiko Nakane, Tsuyoshi Katayama, Koiti Komawaki, Yoshinobu Ishida | 1998-12-08 |
| 5838658 | Optical disc | Kazuhiko Nakane, Hiroyuki Ohata, Kenji Gotoh, Yoshinobu Ishida, Isao Satoh +3 more | 1998-11-17 |