Issued Patents All Time
Showing 101–125 of 150 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6483790 | Optical disk, an optical disk device, and a method of managing defects in an optical disk | Hiroyuki Ohata | 2002-11-19 |
| 6469978 | Rewritable optical disk with spare area and optical disk processing apparatus | Hiroyuki Ohata | 2002-10-22 |
| 6466530 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 2002-10-15 |
| 6463021 | Optical disk, an optical disk device, and a method of managing defects in an optical disk | Hiroyuki Ohata | 2002-10-08 |
| 6438079 | Optical disk, optical disk drive apparatus, and optical disk tracking method | Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 2002-08-20 |
| 6434099 | Optical disk having an attribute which designates whether a recording area permits rewriting or not | Kyosuke Yoshimoto, M. C. Rao, Hiroyuki Ohata, Teruo Furukawa, Junichi Kondo +1 more | 2002-08-13 |
| 6396798 | Optical disc with a rewritable area and a read-only area | Yoshinari Takemura, Shunji Ohara, Takashi Ishida, Isao Satoh, Masato Nagasawa +1 more | 2002-05-28 |
| 6396799 | Optical disk drive device using an optical disk having a continuous information track formed of alternating land/groove revolutions | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 2002-05-28 |
| 6341105 | Light beam condensing apparatus and method of driving optical recording medium by applying the apparatus | — | 2002-01-22 |
| 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 | Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 2002-01-08 |
| 6337839 | Optical disk recording medium and optical disk drive apparatus | Hiroyuki Ohata, Masato Nagasa, Kenji Gotoh, Yoshinobu Ishida | 2002-01-08 |
| 6324139 | Method of adjusting laser spot size for reading and recording information from optical recording medium in accordance with track pitch read from the medium | — | 2001-11-27 |
| 6307821 | Optical disk drive recording/reproduction apparatus and method for producing modified address data | Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2001-10-23 |
| 6275466 | Optical disk and optical disk drive device | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 2001-08-14 |
| 6236637 | Optical disk and optical disk drive device | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 2001-05-22 |
| 6229784 | Optical disk having an attribute which designates whether a recording area permits rewriting or not | Kyosuke Yoshimoto, M. C. Rao, Hiroyuki Ohata, Teruo Furukawa, Junichi Kondo +1 more | 2001-05-08 |
| 6212145 | Optical disk drive recording/reproduction apparatus and method for producing modified address data | Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2001-04-03 |
| 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 | Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 2001-03-13 |
| 6163522 | Optical recording medium having the physical address of sectors monotonically change along spiral tracks | Hiroyuki Ohata, Masato Nagasa, Kenji Gotoh, Yoshinobu Ishida | 2000-12-19 |
| 6160775 | Optical disk drive recording/reproduction apparatus and method for producing modified address data | Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2000-12-12 |
| 6151292 | Optical disk having sequentially numbered sectors and logical tracks formed by a series of 2.sup.n sectors, and disk drive apparatus for using such an optical disk | Kyosuke Yoshimoto, Teruo Furukawa | 2000-11-21 |
| 6147961 | Optical disk and optical disk drive device | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 2000-11-14 |
| 6097684 | Optical disk drive recording/reproduction apparatus and method for producing modified address data | Hiroyuki Oohata, Kenji Gotoh, Yoshinobu Ishida | 2000-08-01 |
| 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 | Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 2000-07-18 |
| 6069869 | Optical disk and optical disk drive device | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 2000-05-30 |