Issued Patents 2002
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480222 | Semiconductor laser and flying optical pickup for recording/reproducing using the same | Chul-woo Lee, Pyong-yong Seong | 2002-11-12 |
| 6469979 | METHOD FOR DETECTING SERVO ERROR, APPARATUS THEREFOR, DISK WHICH MAINTAINS QUALITY OF SERVO ERROR SIGNAL, METHOD OF CONTROLLING SERVO OF DISK RECORDING/REPRODUCING APPARATUS, METHOD OF DETECTING TRACKING ERROR, AND METHOD OF DETECTING TILT ERROR | Seong-sin Joo, In-sik Park, Byung-in Ma, Chong-sam Chung, Jung-wan Ko +2 more | 2002-10-22 |
| 6466529 | Optical pickup assembly and method of detecting tilt | Seok-jung Kim, Yong-hoon Lee, Tae Kyung Kim | 2002-10-15 |
| 6449229 | Optical pickup assembly with adjustable inclination | Seok-jung Kim, Byung-ryul Ryoo, Yong-Ki Son, Pyong-yong Seong, Yong Jae Lee +1 more | 2002-09-10 |
| 6449237 | Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure | Chul-woo Lee, Kun-ho Cho, Pyong-yong Seong | 2002-09-10 |
| 6430139 | Objective lens for high-density optical focusing, and optical pickup using the same | Kun-ho Cho, Seung-tae Jung, Chul-woo Lee, Chong-sam Chung, Dong-Ho Shin | 2002-08-06 |
| 6400666 | Optical pickup device | Kun-ho Cho, Yong-hoon Lee, Seok-jung Kim, Seung-tae Jung, Chul-woo Lee +1 more | 2002-06-04 |
| 6400658 | DVD-RAM disk reproduction apparatus for reducing errors during detection of identification data | Chang-jin Yang, Pyong-yong Seong, Seong-sin Joo, Soo-yul Jung, Jung-Eon Seo +2 more | 2002-06-04 |
| 6396638 | Optical pickup device capable of stable tracking | Kun-ho Cho, Seung-tae Jung, Chul-woo Lee, Joong-eon Seo, Dong-Ho Shin | 2002-05-28 |
| 6381207 | Optical pickup movable to control beam shift and field angle in an optical disk drive | Byung-ryul Ryoo, Pyong-yong Seong, Seok-jung Kim, Yong-Ki Son, Tae Kyung Kim +1 more | 2002-04-30 |
| 6363046 | Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable compact disk (CD-R) using a holographic variable aperture | Chul-woo Lee | 2002-03-26 |
| 6345029 | Optical pickup apparatus and method | Chul-woo Lee | 2002-02-05 |
| 6337841 | Compatible optical pickup | Kun-soo Kim, Jong-ryull Kim, Myoung Soo Choi, Hyung-taek Oh, Jong-hwa Yu +3 more | 2002-01-08 |