Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977876 | Apparatus for and method of detecting defocus error signal for optical pickup and apparatus for and method of detecting seek direction | Byung-in Ma, In-sik Park, Chong-sam Chung, Jin-hoon Jeon, Byoung-ho Choi | 2005-12-20 |
| 6961292 | Apparatus generating a seek direction detecting signal for an optical pickup using track cross and track error signals | Byung-in Ma, Chong-sam Chung, In-sik Park, Byoung-ho Choi | 2005-11-01 |
| 6885621 | Error signal detection apparatus and method for optical recording/reproducing system including comparing phases of sum signals | Byung-in Ma, Byoung-ho Choi, Chong-sam Chung, In-sik Park | 2005-04-26 |