Issued Patents All Time
Showing 51–70 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011762 | Optical disk apparatus | Katsuya Watanabe, Shin-ichi Yamada, Yasuaki Edahiro, Takeharu Yamamoto | 2000-01-04 |
| 5886962 | Tilt control apparatus with tilt target value based on bit error rate signal | Kouichi Takamine, Yasuaki Edahiro, Hiromichi Ishibashi | 1999-03-23 |
| 5878018 | Optical recording medium having dual information surfaces | Shin-ichi Tanaka, Yasuhiro Sugihara, Hiroshi Taniguchi, Michiyoshi Nagashima | 1999-03-02 |
| 5867475 | Optical record carrier and method for recording and reproducing signals therefrom | Shin-ichi Tanaka, Koichi Hirayama | 1999-02-02 |
| 5850379 | Optical information recording medium, optical information recording method, and optical information reproducing apparatus utilizing the same | Osamu Yamaguchi, Yoshihisa Fukushima, Namio Hirose | 1998-12-15 |
| 5831952 | Optical disk thickness discriminating apparatus | Shin-ichi Yamada, Yasuaki Edahiro, Kouichi Takamine, Katsuya Watanabe | 1998-11-03 |
| 5815485 | Recording medium, a method for producing the same, a control method using the recording medium, and a recording/reproducing apparatus using the recording medium | Shinichi Tanaka, Hiromichi Ishibashi, Shinichi Kadowaki | 1998-09-29 |
| 5805543 | Tilt control apparatus based on pulsed width detection of an information reproduced signal | Kouichi Takamine, Yasuaki Edahiro, Hiromichi Ishibashi | 1998-09-08 |
| 5790487 | Optical information recording medium, optical information recording method, and optical information reproducing apparatus utilizing the same | Osamu Yamaguchi, Yoshihisa Fukushima, Namio Hirose | 1998-08-04 |
| 5777967 | Optical disk device | Hiromichi Ishibashi, Toshiyuki Shimada, Yasuaki Edahiro, Ryusuke Horibe, Hiroyuki Miyachi | 1998-07-07 |
| 5732066 | Optical record carrier and method for recording and reproducing signals therefrom | Shin-ichi Tanaka, Koichi Hirayama | 1998-03-24 |
| 5726969 | Optical recording medium having dual information surfaces | Shin-ichi Tanaka, Yasuhiro Sugihara, Hiroshi Taniguchi, Michiyoshi Nagashima | 1998-03-10 |
| 5699334 | Control devices for optical disk based on driving signal saturation | Shin-ichi Yamada, Takeharu Yamamoto, Yasuaki Edahiro | 1997-12-16 |
| 5663942 | Jitter measurement apparatus detecting amplitude of phase errors between information signal and synchronized clock signal | Hiromichi Ishibashi, Motoyuki Kobayashi | 1997-09-02 |
| 5650984 | Method for causing a light beam to jump from an initial track to a target track | Hiroyuki Yamaguchi, Toshiyuki Kinou, Shinichi Yamada | 1997-07-22 |
| 5610879 | Optical reproducing device, optical reproducing method using the same, and optical record medium used in the same | Hiromichi Ishibashi, Takeo Ohta, Yasuhiro Sugihara | 1997-03-11 |
| 5566141 | Track retrieving method for making a light beam jump and scan from one track to another | Hiroyuki Yamaguchi, Toshiyuki Kinou, Shinichi Yamada | 1996-10-15 |
| 5526332 | Reference clock generator for sampled servo type disk unit and disk unit | Shin-iti Yamada, Hiroyuki Yamaguchi, Toshiyuki Kinou | 1996-06-11 |
| 5508995 | Optical disk capable of recording information on both groove and land tracks | Yasuhiro Sugihara, Shunji Oohara, Yasuki Matsumoto, Shin-ichi Yamada | 1996-04-16 |
| 5444682 | Tracking control apparatus | Shinichi Yamada, Hiroyuki Yamaguchi, Osamu Yamaguchi, Yoshihiro Kanda, Yasuki Matsumoto | 1995-08-22 |