Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977982 | Differential phase detection device and tracking error signal detection apparatus using the same | Byung-in Ma, In-sik Park, Joong-eon Seo, Soo-yul Jung, Chang-jin Yang | 2005-12-20 |
| 6906986 | Apparatus and method of measuring vibration quantity and method of designing loop | Moon-noh Lee, Won Ki Kim, Dong Jin Lee, Hyun Seok Yang, Hong-gul Jun | 2005-06-14 |