Issued Patents 1997
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703862 | Dual focus objective lens with two curvatures for focussing light on two different kinds of disks with different thicknesses | Jang-hoon Yoo | 1997-12-30 |
| 5699340 | Method for correcting aberration due to optical disk tilt and apparatus therefor | Kyung-hwa Rhim, Pyong-yong Seong, Chong-sam Chung | 1997-12-16 |
| 5699339 | Inverse image generating method apparatus thereof and focus error detecting method using the same and apparatus thereof | Chong-sam Chung, Jang-hoon Yoo, Kyung-hwa Rim | 1997-12-16 |
| 5665957 | Lens device comprising light blocking means and an optical pickup apparatus using the lens device | Dong-Ho Shin, Kyung-hwa Rim, Chong-sam Chung, Kun-ho Cho, Pyong-yong Seong +2 more | 1997-09-09 |
| 5657146 | Optical scanning apparatus | Min Ho Choi, Young Gi Kim | 1997-08-12 |
| 5650986 | Optical pickup driving apparatus for an optical disk drive | Young Woong Kim | 1997-07-22 |
| 5640265 | Optical scanning apparatus | Chang Jin PARK, Dong Hoon Kang | 1997-06-17 |
| 5631893 | Multi-head device for optical disk and recording/reproducing system for multiple users utilizing the same | Jin Ku Kang, Sung-han Ha, Tae Seok Park | 1997-05-20 |
| 5629514 | Critical angle focus error detector | Chong-sam Chung, Jang-hoon Yoo, Kyung-hwa Rim | 1997-05-13 |
| 5617398 | In-line optical pickup using Wollaston Prism and collimating lens directing polarized light components to detectors | Jong-sam Jeong, Eung-Ho Kim | 1997-04-01 |
| 5594714 | Focus error detection with two symmetrically splitted reflected beams | Kyung-hwa Rim, Pyong-yong Seong, Chong-sam Chung | 1997-01-14 |