Issued Patents All Time
Showing 126–149 of 149 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6304534 | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus | Hiroshi Ueda, Yoshiho Gotoh, Yoshihisa Fukushima | 2001-10-16 |
| 6295257 | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus | Hiroshi Ueda, Yoshiho Gotoh, Yoshihisa Fukushima | 2001-09-25 |
| 6292445 | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus | Hiroshi Ueda, Yoshiho Gotoh, Yoshihisa Fukushima | 2001-09-18 |
| 6289102 | Apparatus and method for preventing unauthorized use of information recorded on an information recording medium | Hiroshi Ueda, Yoshihisa Fukushima, Makoto Tatebayashi, Natsume Matsuzaki | 2001-09-11 |
| 6249888 | Information recording medium, and method and apparatus for managing defect thereof | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2001-06-19 |
| 6233699 | Information recording medium, and method and apparatus for managing defect thereof | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2001-05-15 |
| 6223310 | Information recording medium, and method and apparatus for managing defect thereof | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2001-04-24 |
| 6205099 | Disk defect management method and disk recording and reproducing apparatus | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2001-03-20 |
| 6189118 | Information recording medium, and method and apparatus for managing defect thereof | Shinji Sasaki, Hiroshi Ueda, Yoshihisa Fukushima | 2001-02-13 |
| 6160778 | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus | Hiroshi Ueda, Yoshiho Gotoh, Yoshihisa Fukushima | 2000-12-12 |
| 5983319 | Information recording and reproduction apparatus and a method of data caching including read-ahead capability | — | 1999-11-09 |
| 5881032 | Optical disk, and optical disk reproduction method and apparatus implementing a mathematical complementary relationship for plural layers | Yoshihisa Fukushima, Hiroshi Ueda | 1999-03-09 |
| 5875455 | Information recording and reproducing apparatus merging sequential recording requests into a single recording request, and method of data caching for such apparatus | — | 1999-02-23 |
| 5774439 | Optical-disk recording and reproducing apparatus and optical disk for recording information on lands and grooves | Kazuhiro Aoki, Shunji Oohara | 1998-06-30 |
| 5734633 | Optical-disk recording and reproducing apparatus and method using an optical disk for recording information on lands and grooves | Kazuhiro Aoki, Shunji Oohara | 1998-03-31 |
| 5715221 | Method for managing defects in an information recording medium, and a device and information recording medium using said method | Takahiro Nagai, Hiroshi Ueda | 1998-02-03 |
| 5564013 | Optical information recording and reproducing apparatus adapted to optically record and reproduce data in a sector, and method thereof | Kazuhiro Aoki, Yoshihisa Fukushima | 1996-10-08 |
| 5541900 | Optical information recording and reproducing apparatus and method for different spot size type media | Isao Satoh | 1996-07-30 |
| 5517484 | Optical disk and optical disk recording and reproducing apparatus | Yuji Takagi, Isao Satoh, Yuji Hisakado | 1996-05-14 |
| 5477514 | Control apparatus for controlling focusing, accessing and spindle rotating circuits to operate simultaneously | Katsuya Watanabe | 1995-12-19 |
| 5406534 | Double-sided recordable optical disk suitable for a substituting process and a method for performing defect management | Yuji Hisakado, Isao Satoh, Yuji Takagi | 1995-04-11 |
| 5404357 | Information writing and reading apparatus | Yoshihisa Fukushima | 1995-04-04 |
| 5202873 | AGC circuit for optical disk data reproducing apparatus using ALPC period detector | Kenzo Ishibashi, Takashi Inoue, Shunji O'Hara | 1993-04-13 |
| 5128911 | Optical disc reproducing apparatus having an automatic gain control circuit | Shunji Ohara, Kenzo Ishibashi | 1992-07-07 |