| 7613092 |
Reproduction apparatus and focus jump method |
Kunihiro Shioura, Shiro Morotomi |
2009-11-03 |
| 7113602 |
Apparatus for adjustable positioning of virtual sound source |
Shinichi Maru, Junichi Usui, Toshihiko Konno |
2006-09-26 |
| 6044048 |
Optical pickup and optical disc device for accessing media of differing recording densities |
Tsutomu Mochizuki |
2000-03-28 |
| 5706270 |
Compact optical pick-up lead with a vertically inclined substrate integrated with laser source and light detector |
Genichi Iizuka |
1998-01-06 |
| 5485445 |
Disc driving apparatus having means for placing a read record head at a predetermined position in the innermost region of a disc |
Tokio Kanada |
1996-01-16 |
| 5247501 |
Tracking error detection apparatus for an optical disk |
Minoru Hashimoto, Takeo Tamura |
1993-09-21 |
| 4897828 |
Optical pickup device |
You Yoshitoshi, Hidehiro Kume, Yoshiyuki Matsumoto, Koji Mitsumori, Etsufumi Yamamoto |
1990-01-30 |
| 4893296 |
Optical pickup device |
Yoshiyuki Matsumoto, Hidehiro Kume, Koji Mitsumori, You Yoshitoshi, Etsufumi Yamamoto |
1990-01-09 |
| 4766583 |
Optical pickup device with objective lens movable in two directions |
Yoshimasa Goda |
1988-08-23 |
| 4733067 |
Semiconductor laser apparatus for optical head |
Akira Nakamura |
1988-03-22 |
| 4709139 |
Coma correction in optical head with astigmatism for focusing error detection |
Akira Nakamura, Tomoyuki Ishida, Kenji Shintani |
1987-11-24 |