Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9013965 | Optical pickup device and optical disk drive including the same | Ji-sun Ahn | 2015-04-21 |
| 8824253 | Optical pickup and optical system using the same | Ji-sun Ahn, Yong Jae Lee | 2014-09-02 |
| 8675465 | Method of controlling light, and optical pickup device and optical disk drive adopting the method | Yong Jae Lee | 2014-03-18 |
| 8576684 | Compatible optical pickup and optical information storage medium apparatus using the same | Yong Jae Lee | 2013-11-05 |
| 8565056 | Method of generating tracking error signal, optical pickup device, and optical disc drive device adopting the method | Yong Jae Lee | 2013-10-22 |
| 8520488 | Optical pickup device that forms an oval spot on a disc having a small angle with respect to a radial axis | Yong Jae Lee | 2013-08-27 |
| 8493831 | Compatible optical pickup and optical recording and/or reproducing apparatus employing the same | Tae Kyung Kim, Chong-sam Chung, Pyong-yong Seong | 2013-07-23 |
| 8416672 | Optical pickup, photodetector, and drive adopting the optical pickup | Yong Jae Lee, Pyong-yong Seong, Hong-kuk Kim | 2013-04-09 |
| 8416670 | Method of accessing optical recording media, optical pickup device, and optical drive using the device | Yong Jae Lee, Pyong-yong Seong | 2013-04-09 |
| 7835235 | Optical pickup apparatus and optical recording/reproducing system using the same | Sun-mook Park, Jong Kook Lee, Pyong-yong Seong | 2010-11-16 |
| 7355953 | Optical pickup for cutting off optical noise and optical recording and/or reproducing apparatus using the same | Byung-ryul Ryoo, Pyong-yong Seong, Myoung-cheol Cho, Kyung-ui Park | 2008-04-08 |
| 6686697 | Circuit to protect a light element | Myoung-cheol Cho, Byung-ryul Ryoo, Kyung-ui Park, Pyong-yong Seong | 2004-02-03 |