Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8223619 | Optical recording medium, reproduction apparatus, and tracking servo method | Kunihiro Shioura, Shiro Morotomi, Toshiya Murakami, Atsushi Umezawa | 2012-07-17 |
| 7626912 | Optical recording medium, reproduction apparatus and reproduction method | Yoshiyuki Teraoka | 2009-12-01 |
| 7554900 | Disc-shaped recording medium, method and apparatus for manufacturing same and data recording method | — | 2009-06-30 |
| 7355929 | Magneto-optical disk and recording and/or reproducing method and recording and/or reproducing apparatus using the magneto-optical disk | Makoto Watanabe, Kazutomo Miyata, Teruyuki Ota | 2008-04-08 |
| 7263708 | Cartridge type recording medium, associated apparatus and methodology of disc detection | Mikinori Matsuda, Tokio Kanada, Kazuhito Kurita, Akihiro Noda, Yoshiro Arikawa +1 more | 2007-08-28 |
| 7256718 | Modulation apparatus and method | Toshiyuki Nakagawa, Hiroshige Okamura | 2007-08-14 |
| 7224656 | Disc detection device and associated method | Mikinori Matsuda, Tokio Kanada, Kazuhito Kurita, Akihiro Noda, Yoshiro Arikawa +1 more | 2007-05-29 |
| 7110328 | Recording and reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium | Yoshiyuki Teraoka, Tomiji Tanaka, Masato Hattori, Tamotsu Ishii | 2006-09-19 |
| 7002894 | Disc-shaped recording medium, manufacturing method and manufacturing device thereof, and data recording method | — | 2006-02-21 |
| 6982660 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Hiroshige Okamura | 2006-01-03 |
| 6965329 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Hiroshige Okamura | 2005-11-15 |
| 6958713 | Modulation apparatus and method, and DSV-control-bit generating method | Toshiyuki Nakagawa, Hiroshige Okamura | 2005-10-25 |
| 6950042 | Modulating apparatus and method, and DSV control bit producing method | Toshiyuki Nakagawa, Hiroshige Okamura | 2005-09-27 |
| 6914544 | Modulation apparatus and method and DSV control bit generation method | Toshiyuki Nakagawa, Hiroshige Okamura | 2005-07-05 |
| 6765860 | Optical disc and optical drive | Shigemi Maeda, Toshiaki Hioki, Michio Matsuura | 2004-07-20 |
| 6751166 | Phase error detection method for magnetic wall displacement type of magneto-optical recording device | Goro Fujita, Tetsuhiro Sakamoto | 2004-06-15 |
| 6678223 | Frequency demodulating circuit, optical disk apparatus thereof and preformating device | Susumu Tosaka, Yoshikatsu Niwa, Shinichi Nakao, Goro Fujita | 2004-01-13 |
| 6385257 | Frequency demodulating circuit, optical disk apparatus thereof and preformating device | Susumu Tosaka, Yoshikatsu Niwa, Shinichi Nakao, Goro Fujita | 2002-05-07 |
| 6327240 | Optical disc and optical disc drive | Shigemi Maeda, Toshiaki Hioki, Michio Matsuura | 2001-12-04 |
| 6320839 | Optical information recording medium, optical information recording method and optical information recording apparatus | Goro Fujita, Shingo Imanishi | 2001-11-20 |
| 6310851 | Frequency demodulating circuit, optical disk apparatus thereof and preformating device | Susumu Tosaka, Yoshikatsu Niwa, Shinichi Nakao, Goro Fujita | 2001-10-30 |
| 6282162 | Optical disc and optical disc driving device | Goro Fujita, Satoshi Otsuka, Tamotsu Yamagami | 2001-08-28 |
| 6215758 | Recording medium | Hideyoshi Horimai, Goro Fujita, Susumu Tosaka | 2001-04-10 |
| 6128272 | Recording medium | Hideyoshi Horimai, Goro Fujita, Susumu Tosaka | 2000-10-03 |
| 5978350 | Optical disc and optical disc driving device | Goro Fujita, Satoshi Otsuka, Tamotsu Yamagami | 1999-11-02 |