Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6813234 | Optical pickup device and method of adjusting the same | Mitsuhiro Togashi, Naoki Kaiho, Ichiro Morishita | 2004-11-02 |
| 6704152 | Light irradiating device, optical pickup device with the same, method of adjusting light irradiating device | Mitsuhiro Togashi, Naoki Kaiho, Ichiro Morishita | 2004-03-09 |
| 6307820 | Multiple layer disk reproducing apparatus, and apparatus for reproducing information record medium | Hideki Kobayashi | 2001-10-23 |
| 6301201 | Reading apparatus for optical recording medium | — | 2001-10-09 |
| 6240054 | Multiple layer disk reproducing apparatus, and apparatus for reproducing information record medium | Hideki Kobayashi | 2001-05-29 |
| 5978337 | Optical record medium judging method and apparatus and focus servo controlling method and apparatus | Kouki Sai | 1999-11-02 |
| 5790493 | Optical record medium judging method and apparatus and focus servo controlling method and apparatus | Kouki Sai | 1998-08-04 |
| 5757745 | Focus servo controlling method and apparatus | — | 1998-05-26 |
| 5636312 | Video image mixing apparatus | Manabu Okamoto, Takashi Yoshimi, Hiroyasu Matsuura, Hitoshi Yamazaki, Masakazu Miyazaki +1 more | 1997-06-03 |
| 5608533 | Video signal recording/reproducing apparatus where the order of access to video data during a write mode is different than the order of access during a read mode | Manabu Okamoto | 1997-03-04 |
| 5579028 | Apparatus for mixing play video signal with graphics video signal | — | 1996-11-26 |
| 5434676 | Apparatus for mixing video signals having different numbers of lines | Manabu Okamoto, Takashi Yoshimi, Hiroyasu Matsuura, Hitoshi Yamazaki, Masakazu Miyazaki +1 more | 1995-07-18 |
| 5410524 | Recording medium apparatus for inhibiting playback of predetermined recorded portions | — | 1995-04-25 |
| 5390938 | Video game apparatus | — | 1995-02-21 |
| 5355175 | Video mixing apparatus capable of combining two input signals and varying the mixing ratio line by line | Setsuo Okada, Manabu Okamoto, Yoshinobu Nagase, Takashi Yoshimi, Hitoshi Yamazaki +5 more | 1994-10-11 |
| 5245599 | Disc player using a servo loop with a variable transfer function | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1993-09-14 |
| 5150344 | Tracking servo system | Munehiko Iwase, Hidehiro Ishii, Tatsuya Fukuda | 1992-09-22 |
| 5146443 | Servo apparatus for optical disk player having both open loop coarse gain control and closed loop fine gain control | Munehiko Iwase | 1992-09-08 |
| 5105402 | Disc player with manual search function | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1992-04-14 |
| 5101391 | Method for setting the loop gain in a tracking servo loop | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1992-03-31 |
| 5084849 | Method for setting the loop gain of servo loops in a disc player | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1992-01-28 |
| 5065386 | Servo system responsive to noise and having variable characteristic filter means | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1991-11-12 |
| 5050149 | Servo device for disc player | Hidehiro Ishii, Chiharu Miura, Tatsuya Fukuda | 1991-09-17 |
| 4899326 | Magazine-housed disk player | Hidehiro Ishii, Osamu Watanabe, Junichi Yoshio, Kazuhiko Katakami, Takeshi Izumo | 1990-02-06 |
| 4885644 | Spindle servo device for data recording disk reproducing apparatus | Hidehiro Ishii, Junichi Yoshio, Osamu Watanabe, Takeshi Izumo, Kazuhiko Katakami +2 more | 1989-12-05 |