Issued Patents All Time
Showing 51–75 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018507 | Method of and apparatus for recording data on land/groove track on optical recording medium | Akira Shimazu, Tamotsu Yamagami, Tadaaki Nomoto | 2000-01-25 |
| 5978336 | Optical disk finalization method and optical disk finalization apparatus | Norichika Mine, Shoei Kobayashi, Tetsu Kimura | 1999-11-02 |
| 5978333 | Recording/reproducing apparatus and method | Shoei Kobayashi, Tamotsu Yamagami | 1999-11-02 |
| 5949602 | Method and apparatus for measuring head deviation and method and apparatus for recording/reproducing data | Hideaki Ishioka, Yoshikazu Onuki, Satoru Seko | 1999-09-07 |
| 5931690 | Electrical connector | Noriaki Sai | 1999-08-03 |
| 5917783 | Optical disk, a recording/reproducing apparatus and method for the optical disk | Shoei Kobayashi, Tamotsu Yamagami | 1999-06-29 |
| D411582 | Game machine | Hiroyuki Muraki, Shinya Ishida, Katsunori Okita | 1999-06-29 |
| 5907448 | Magnetic disk device and method of manufacturing same having convex recordings regions, concave guard bands, and impressed concavities and convexities representing control signals | Kenjiro Watanabe, Satoru Seko, Kazushige Kawazoe, Takayasu Muto, Osamu Morita +4 more | 1999-05-25 |
| 5905705 | Disc device having eccentricity measurement and clock correction | Satoru Seko, Hideaki Ishioka, Itaru Tomisaki | 1999-05-18 |
| 5901124 | Optical disk, a recording/reproducing apparatus and method for the optical disc | Shoei Kobayashi, Tamotsu Yamagami | 1999-05-04 |
| 5886985 | Optical recording medium having a plurality of sectors separated by sync signals | Shoei Kobayashi, Tamotsu Yamagami, Hiroshi Ogawa, Yoichiro Sako | 1999-03-23 |
| 5878024 | Optical disc, apparatus and method for recording and reproducing data | Shoei Kobayashi, Tamotsu Yamagami, Hiroshi Ogawa, Yoichiro Sako | 1999-03-02 |
| 5859740 | Information storage disc and information recording and reproducing apparatus | Nobuhiro Hayashi, Noriyuki Yamamoto | 1999-01-12 |
| 5835461 | Optical disc, apparatus and method for recording and reproducing data | Shoei Kobayashi, Tamotsu Yamagami, Hiroshi Ogawa, Yoichiro Sako | 1998-11-10 |
| 5835478 | Optical disc having address information for recording and reproducing data at correct positions | Shoei Kobayashi, Tamotsu Yamagami, Hiroshi Ogawa, Yoichiro Sako | 1998-11-10 |
| 5835468 | Optical disk, recording/reproducing apparatus and method for rapidly recording/reproducing data on/from an optical disk using gray coding | Shoei Kabayashi, Tamotsu Yamagami | 1998-11-10 |
| 5828639 | Recording/playback device and method thereof, and disc | Shoei Kobayashi, Tamotsu Yamagami | 1998-10-27 |
| 5815486 | Optical disk, recording/reproducing apparatus and method for rapidly recording/reproducing data on/from an optical disk using gray coding | Shoei Kobayashi, Tamotsu Yamagami | 1998-09-29 |
| 5761165 | Disc device providing eccentricity compensation using a head radial position detecting circuit | Satoru Seko, Hideaki Ishioka, Itaru Tomisaki | 1998-06-02 |
| 5745455 | Disc device having eccentricity measurement and clock correction | Satoru Seko, Hideaki Ishioka, Itaru Tomisaki | 1998-04-28 |
| 5680267 | Disk apparatus used with a recording medium having clock marks detected by clock interpolation | Shoji Tanaka | 1997-10-21 |
| 5677819 | Magnetic disk having improved servo area for protecting equal time interval characteristics and for preventing azimuth loss | Satoru Seko | 1997-10-14 |
| 5654842 | Head displacement measuring method and apparatus and data recording/reproducing method and apparatus | Satoru Seko, Takehisa Ishida | 1997-08-05 |
| 5617388 | Disc recording/reproducing apparatus which uses stored eccentricity data to maintain the read/write head at a constant radial position during a stand-by mode | Hideaki Ishioka, Yoshikazu Onuki | 1997-04-01 |
| 5615191 | Disc device having eccentricity measurement and clock correction | Satoru Seko, Hideaki Ishioka, Itaru Tomisaki | 1997-03-25 |