Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699339 | Inverse image generating method apparatus thereof and focus error detecting method using the same and apparatus thereof | Chul-woo Lee, Jang-hoon Yoo, Kyung-hwa Rim | 1997-12-16 |
| 5699340 | Method for correcting aberration due to optical disk tilt and apparatus therefor | Chul-woo Lee, Kyung-hwa Rhim, Pyong-yong Seong | 1997-12-16 |
| 5665957 | Lens device comprising light blocking means and an optical pickup apparatus using the lens device | Chul-woo Lee, Dong-Ho Shin, Kyung-hwa Rim, Kun-ho Cho, Pyong-yong Seong +2 more | 1997-09-09 |
| 5629514 | Critical angle focus error detector | Chul-woo Lee, Jang-hoon Yoo, Kyung-hwa Rim | 1997-05-13 |
| 5594714 | Focus error detection with two symmetrically splitted reflected beams | Chul-woo Lee, Kyung-hwa Rim, Pyong-yong Seong | 1997-01-14 |