| 8391112 |
Optical disk apparatus, control method, and program |
Yasushi Tomita, Takamichi Yamakoshi |
2013-03-05 |
| RE38538 |
Apparatus and method for recording and reproducing information from a plurality of recording medium having different thicknesses and recording densities |
Akio Yamakawa |
2004-06-22 |
| 6366543 |
Optical pickup for discriminating between and reading different types of optical discs |
Kiyoshi Ohsato, Akio Yamakawa, Masamichi Utsumi |
2002-04-02 |
| 6222803 |
Optical pickup for discriminating between and reading different types of optical discs |
Kiyoshi Ohsato, Akio Yamakawa, Masamichi Utsumi |
2001-04-24 |
| 5875164 |
Apparatus and method for recording and reproducing information from a plurality of recording medium having different thickness and recording densities |
Akio Yamakawa |
1999-02-23 |
| 5737294 |
Objective lens with two numerical apertures for reading/writing two optical discs |
Akio Yamakawa |
1998-04-07 |
| 5442615 |
Optical plate for correcting comatic aberration |
Kiyoshi Ohsato, Naoya Eguchi |
1995-08-15 |