Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7046806 | Information recording apparatus and method, and information reproduction apparatus and method | — | 2006-05-16 |
| 6167013 | Information storage medium and information reproducing apparatus | Hideo Ando | 2000-12-26 |
| 6049515 | Optical disk device and replacement processing method | — | 2000-04-11 |
| 6031804 | Optical disk device having defect detection information | — | 2000-02-29 |
| 5991253 | Optical disk device and replacement processing method | — | 1999-11-23 |
| 5982729 | Optical disk device and replacement processing method | — | 1999-11-09 |
| 5963522 | Optical disk device and method for detecting and replacing a defective sector within a block containing recording data and error correction data on an optical disk | — | 1999-10-05 |
| 5959954 | Information recording/reproducing apparatus with variable rate of revolution and data clock frequency | — | 1999-09-28 |
| 5956309 | Optical disk device and replacement processing method | — | 1999-09-21 |
| 5943313 | Information storage medium and information reproducing apparatus having a wobbling pre-groove | Hideo Ando | 1999-08-24 |
| 5883867 | Optical disk device and method for replacing a defective sector within a block containing recording data and error correction data on an optical disk | — | 1999-03-16 |
| 5859823 | Optical disk device method for detecting and replacing a defective sector within a block containing recording data and error correction data on an optical disk | — | 1999-01-12 |
| 5841748 | Optical disk device and replacement processing method | — | 1998-11-24 |
| 5835459 | Optical disc apparatus for recording and reproducing data onto and from an optical disc with grooves and lands | Tamane Takahara, Masahiko Tanaka | 1998-11-10 |
| 5805547 | Optical disk device and replacement processing method | — | 1998-09-08 |
| 5793722 | Optical disk apparatus, tracking control circuit therefor, and method of tracking groves and lands | — | 1998-08-11 |
| 5761189 | Apparatus for manufacturing a maser disk, optical disk forming apparatus, and optical disk forming method | — | 1998-06-02 |
| 5684774 | Optical disk apparatus | — | 1997-11-04 |
| 5664141 | Disk drive system using received address for selecting disk processing format | — | 1997-09-02 |
| 5544134 | Optical disk apparatus for reading data from zones of an optical disk using different frequency clocks | — | 1996-08-06 |
| 5481531 | Optical disk apparatus for recording/erasing information in the M-CAV format by using gain switching to increase the speed of the master clock | — | 1996-01-02 |
| 5309425 | Signal processing circuit for optical disk apparatus | Akihiko Doi | 1994-05-03 |
| 5306903 | Objective lens position detecting system capable of adjusting amounts of radiation | Akihiko Doi | 1994-04-26 |
| 5268914 | Laser beam control apparatus | Yutaka Saito | 1993-12-07 |
| 5239658 | Switchable parallel bus terminator having stable terminator voltage with respect to ambient temperature change | Hiroshi Watanabe | 1993-08-24 |