Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7663998 | Information reproduction device and read clock monitoring method | Masayoshi Nagata, Atsushi Watanabe | 2010-02-16 |
| 7430157 | Recording device, recording method, reproducing device, and reproducing method | Masatoshi Nishino, Junichi Horigome, Hideo Tada, Shigeo Yamaguchi, Masayoshi Nagata +1 more | 2008-09-30 |
| 6906990 | Phase-change optical disk and optical disk apparatus | Masayoshi Nagata, Yasuo Tone, Shigeo Yamaguchi, Junichi Horigome | 2005-06-14 |
| 6570940 | Information reproducing apparatus and reproducing method | Shigeo Yamaguchi, Junichi Horigome | 2003-05-27 |
| 6441661 | PLL circuit | Hiroshi Aoki, Shiro Suzuki, Junichi Horigome, Shigeo Yamaguchi | 2002-08-27 |
| 6317471 | Information reproducing apparatus and reproducing method | Junichi Horigome, Shigeo Yamaguchi | 2001-11-13 |
| 6289059 | Information reproducing apparatus and reproducing method | Shigeo Yamaguchi, Junichi Horigome | 2001-09-11 |
| 6192502 | Information reproducing apparatus and reproducing method | Shigeo Yamaguchi, Junichi Horigome | 2001-02-20 |
| 6097685 | Information reproducing apparatus and reproducing method | Shigeo Yamaguchi, Junichi Horigome | 2000-08-01 |
| 5867463 | Recording and reproducing apparatus including read/write mode reproducing control parameter setting means | — | 1999-02-02 |
| 5617382 | Optical information accessing system capable of reliable jump-back control | Hideki Kobunaya, Yutaka Ishikawa, Yoshimori Yamasaki | 1997-04-01 |
| 5563854 | Optical information accessing system capable of generating one sector initiation signal for each sector | Hideki Kobunaya, Yutaka Ishikawa, Yoshimori Yamasaki | 1996-10-08 |
| 5523990 | Apparatus for using window signal generators to enable detection of heater information such as an address mark, sector mark, or address information recorded on each sector of a disc recording medium only where such information could be present | — | 1996-06-04 |
| 5523988 | Optical pickup control apparatus | — | 1996-06-04 |
| 5521893 | Data recording apparatus | Yoshimori Yamasaki, Hideki Kobunaya, Yutaka Ishikawa | 1996-05-28 |
| 5502699 | Disc reproduction apparatus | Yoshimori Yamasaki, Hideki Kobunaya, Yutaka Ishikawa | 1996-03-26 |
| 5446604 | Apparatus for detecting addresses recorded on each sector of a disk by detecting a first address mark and then in the absence of a second address mark, generating a pseudo address mark a predetermined time after detecting the first address mark | — | 1995-08-29 |
| 5436878 | Disc recording and/or reproducing apparatus for permitting continuous sector processing at boundaries between recording regions with different recording densities | Takao Yamaguchi | 1995-07-25 |
| 5353175 | Apparatus for using window signal generators to enable detection of header information such as an address mark, sector mark, or address information recorded on each sector of a disc recording medium only where such information could be present | — | 1994-10-04 |