| 7343103 |
Apparatus and method for detecting beam power in optical drive |
Pyong-yong Seong, Jong-koog Lee, Yong-jun Cho, Sung-du Kwon |
2008-03-11 |
| 7283440 |
Tracking error signal detecting method selectively using a push-pull method, an improved push-pull method, and a three beam method and optical recording/reproducing apparatus using the same |
In Wook HWANG, Pyong-yong Seong |
2007-10-16 |
| 7251209 |
Optical pickup and a wedge beam splitter |
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2007-07-31 |
| 7230905 |
Optical pickup using two-wavelength light source module and method for correcting position difference |
Ju-Hyung Lee, Pyong-yong Seong, Sun-mook Park |
2007-06-12 |
| 7218598 |
Optical pickup using two-wavelength light source module |
Pyong-yong Seong, Sun-mook Park |
2007-05-15 |
| 7164626 |
Optical pickup using a wedge type beam splitter |
Dong-Ryeol Lee, Pyong-yong Seong |
2007-01-16 |
| 7068933 |
Apparatus and method for detecting beam power in optical drive |
Pyong-yong Seong, Jong-koog Lee, Yong-jun Cho, Sung-du Kwon |
2006-06-27 |
| 6507548 |
Optical pickup device |
Jong-ryull Kim, Myong-soo Choi, Hyung-taek Oh, Jong-hwa Yu |
2003-01-14 |
| 6337841 |
Compatible optical pickup |
Jong-ryull Kim, Myoung Soo Choi, Hyung-taek Oh, Jong-hwa Yu, Chul-woo Lee +3 more |
2002-01-08 |
